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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISeaport} from "../../../interfaces/ISeaport.sol";

// Notes on the Seaport module:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract SeaportV16Module is BaseExchangeModule {
  // --- Structs ---

  struct SeaportETHListingWithPrice {
    ISeaport.AdvancedOrder order;
    uint256 price;
  }

  struct SeaportPrivateListingWithPrice {
    ISeaport.AdvancedOrder[] orders;
    ISeaport.Fulfillment[] fulfillments;
    uint256 price;
  }

  // --- Fields ---

  ISeaport public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ISeaport(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ISeaport.AdvancedOrder calldata order,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        params.amount
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, params.amount);
  }

  // --- Single ERC20 listing ---

  function acceptERC20Listing(
    ISeaport.AdvancedOrder calldata order,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        0
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, 0);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    SeaportETHListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(
          orders[i].order,
          criteriaResolvers,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i].order, criteriaResolvers, params.fillTo, orders[i].price);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function acceptERC20Listings(
    ISeaport.AdvancedOrder[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ETH private listings ---

  function acceptETHPrivateListings(
    SeaportPrivateListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillPrivateOrderWithRevertIfIncomplete(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillPrivateOrder(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple Private ERC20 Private listings ---

  function acceptERC20PrivateListings(
    SeaportPrivateListingWithPrice[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillPrivateOrderWithRevertIfIncomplete(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          0
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillPrivateOrder(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          0
        );

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Single ERC721 offer ---

  function acceptERC721Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC721 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC721 &&
      nftItem.itemType != ISeaport.ItemType.ERC721_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC721 nftToken = IERC721(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC721IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC721
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    // Pay fees
    if (nftToken.ownerOf(identifier) != address(this)) {
      // Only pay fees if the fill was successful
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, paymentToken);

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Single ERC1155 offer ---

  function acceptERC1155Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC1155 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC1155 &&
      nftItem.itemType != ISeaport.ItemType.ERC1155_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC1155 nftToken = IERC1155(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC1155IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC1155
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    uint256 balanceBefore = nftToken.balanceOf(address(this), identifier);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 balanceAfter = nftToken.balanceOf(address(this), identifier);

    // Pay fees
    uint256 amountFilled = balanceBefore - balanceAfter;
    if (amountFilled > 0) {
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(
          fee.recipient,
          // Only pay fees for the amount that was actually filled
          (fee.amount * amountFilled) / order.numerator,
          paymentToken
        );

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Generic handler (used for Seaport-based approvals) ---

  function matchOrders(
    ISeaport.Order[] calldata orders,
    ISeaport.Fulfillment[] calldata fulfillments
  ) external nonReentrant {
    // We don't perform any kind of input or return value validation,
    // so this function should be used with precaution - the official
    // way to use it is only for Seaport-based approvals
    EXCHANGE.matchOrders(orders, fulfillments);
  }

  // --- ERC1271 ---

  function isValidSignature(bytes32, bytes memory) external pure returns (bytes4) {
    // Needed for filling private listings
    return this.isValidSignature.selector;
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  // NOTE: In lots of cases, Seaport will not revert if fills were not
  // fully executed. An example of that is partial filling, which will
  // successfully fill any amount that is still available (including a
  // zero amount). One way to ensure that we revert in case of partial
  // executions is to check the order's filled amount before and after
  // we trigger the fill (we can use Seaport's `getOrderStatus` method
  // to check). Since this can be expensive in terms of gas, we have a
  // separate method variant to be called when reverts are enabled.

  function _fillSingleOrder(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    {} catch {}
  }

  function _fillSingleOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Cache the order's hash
    bytes32 orderHash = _getOrderHash(order.parameters);

    // Before filling, get the order's filled amount
    uint256 beforeFilledAmount = _getFilledAmount(orderHash, order.denominator);

    // Execute the fill
    bool success;
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    returns (bool fulfilled) {
      success = fulfilled;
    } catch {
      revert UnsuccessfulFill();
    }

    if (!success) {
      revert UnsuccessfulFill();
    } else {
      // After successfully filling, get the order's filled amount
      uint256 afterFilledAmount = _getFilledAmount(orderHash, order.denominator);

      // Make sure the amount filled as part of this call is correct
      if (afterFilledAmount - beforeFilledAmount != order.numerator) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _fillPrivateOrder(
    ISeaport.AdvancedOrder[] calldata advancedOrders,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    ISeaport.Fulfillment[] memory fulfillments,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.matchAdvancedOrders{value: value}(
        advancedOrders,
        criteriaResolvers,
        fulfillments,
        receiver
      )
    {} catch {}
  }

  function _fillPrivateOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder[] calldata advancedOrders,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    ISeaport.Fulfillment[] memory fulfillments,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.matchAdvancedOrders{value: value}(
        advancedOrders,
        criteriaResolvers,
        fulfillments,
        receiver
      )
    {} catch {
      revert UnsuccessfulFill();
    }
  }

  function _getOrderHash(
    // Must use `memory` instead of `calldata` for the below cast
    ISeaport.OrderParameters memory orderParameters
  ) internal view returns (bytes32 orderHash) {
    // `OrderParameters` and `OrderComponents` share the exact same
    // fields, apart from the last one, so here we simply treat the
    // `orderParameters` argument as `OrderComponents` and then set
    // the last field to the correct data
    ISeaport.OrderComponents memory orderComponents;
    assembly {
      orderComponents := orderParameters
    }
    orderComponents.counter = EXCHANGE.getCounter(orderParameters.offerer);

    orderHash = EXCHANGE.getOrderHash(orderComponents);
  }

  function _getFilledAmount(
    bytes32 orderHash,
    uint256 adjustedTotalSize
  ) internal view returns (uint256 adjustedTotalFilled) {
    (, , uint256 totalFilled, uint256 totalSize) = EXCHANGE.getOrderStatus(orderHash);
    adjustedTotalFilled = totalSize > 0 ? (totalFilled * adjustedTotalSize) / totalSize : 0;
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import "./OwnablePermissions.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

abstract contract OwnableBasic is OwnablePermissions, Ownable {
    function _requireCallerIsContractOwner() internal view virtual override {
        _checkOwner();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/utils/Context.sol";

abstract contract OwnablePermissions is Context {
    function _requireCallerIsContractOwner() internal view virtual;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "../utils/CreatorTokenBase.sol";
import "../token/erc721/ERC721OpenZeppelin.sol";

/**
 * @title ERC721C
 * @author Limit Break, Inc.
 * @notice Extends OpenZeppelin's ERC721 implementation with Creator Token functionality, which
 *         allows the contract owner to update the transfer validation logic by managing a security policy in
 *         an external transfer validation security policy registry.  See {CreatorTokenTransferValidator}.
 */
abstract contract ERC721C is ERC721OpenZeppelin, CreatorTokenBase {

    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(ICreatorToken).interfaceId || super.supportsInterface(interfaceId);
    }

    /// @dev Ties the open-zeppelin _beforeTokenTransfer hook to more granular transfer validation logic
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize) internal virtual override {
        for (uint256 i = 0; i < batchSize;) {
            _validateBeforeTransfer(from, to, firstTokenId + i);
            unchecked {
                ++i;
            }
        }
    }

    /// @dev Ties the open-zeppelin _afterTokenTransfer hook to more granular transfer validation logic
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize) internal virtual override {
        for (uint256 i = 0; i < batchSize;) {
            _validateAfterTransfer(from, to, firstTokenId + i);
            unchecked {
                ++i;
            }
        }
    }
}

/**
 * @title ERC721CInitializable
 * @author Limit Break, Inc.
 * @notice Initializable implementation of ERC721C to allow for EIP-1167 proxy clones.
 */
abstract contract ERC721CInitializable is ERC721OpenZeppelinInitializable, CreatorTokenBase {
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(ICreatorToken).interfaceId || super.supportsInterface(interfaceId);
    }

    /// @dev Ties the open-zeppelin _beforeTokenTransfer hook to more granular transfer validation logic
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize) internal virtual override {
        for (uint256 i = 0; i < batchSize;) {
            _validateBeforeTransfer(from, to, firstTokenId + i);
            unchecked {
                ++i;
            }
        }
    }

    /// @dev Ties the open-zeppelin _afterTokenTransfer hook to more granular transfer validation logic
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize) internal virtual override {
        for (uint256 i = 0; i < batchSize;) {
            _validateAfterTransfer(from, to, firstTokenId + i);
            unchecked {
                ++i;
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "../interfaces/ICreatorTokenTransferValidator.sol";

interface ICreatorToken {
    event TransferValidatorUpdated(address oldValidator, address newValidator);

    function getTransferValidator() external view returns (ICreatorTokenTransferValidator);
    function getSecurityPolicy() external view returns (CollectionSecurityPolicy memory);
    function getWhitelistedOperators() external view returns (address[] memory);
    function getPermittedContractReceivers() external view returns (address[] memory);
    function isOperatorWhitelisted(address operator) external view returns (bool);
    function isContractReceiverPermitted(address receiver) external view returns (bool);
    function isTransferAllowed(address caller, address from, address to) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "./IEOARegistry.sol";
import "./ITransferSecurityRegistry.sol";
import "./ITransferValidator.sol";

interface ICreatorTokenTransferValidator is ITransferSecurityRegistry, ITransferValidator, IEOARegistry {}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IEOARegistry is IERC165 {
    function isVerifiedEOA(address account) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "../utils/TransferPolicy.sol";

interface ITransferSecurityRegistry {
    event AddedToAllowlist(AllowlistTypes indexed kind, uint256 indexed id, address indexed account);
    event CreatedAllowlist(AllowlistTypes indexed kind, uint256 indexed id, string indexed name);
    event ReassignedAllowlistOwnership(AllowlistTypes indexed kind, uint256 indexed id, address indexed newOwner);
    event RemovedFromAllowlist(AllowlistTypes indexed kind, uint256 indexed id, address indexed account);
    event SetAllowlist(AllowlistTypes indexed kind, address indexed collection, uint120 indexed id);
    event SetTransferSecurityLevel(address indexed collection, TransferSecurityLevels level);

    function createOperatorWhitelist(string calldata name) external returns (uint120);
    function createPermittedContractReceiverAllowlist(string calldata name) external returns (uint120);
    function reassignOwnershipOfOperatorWhitelist(uint120 id, address newOwner) external;
    function reassignOwnershipOfPermittedContractReceiverAllowlist(uint120 id, address newOwner) external;
    function renounceOwnershipOfOperatorWhitelist(uint120 id) external;
    function renounceOwnershipOfPermittedContractReceiverAllowlist(uint120 id) external;
    function setTransferSecurityLevelOfCollection(address collection, TransferSecurityLevels level) external;
    function setOperatorWhitelistOfCollection(address collection, uint120 id) external;
    function setPermittedContractReceiverAllowlistOfCollection(address collection, uint120 id) external;
    function addOperatorToWhitelist(uint120 id, address operator) external;
    function addPermittedContractReceiverToAllowlist(uint120 id, address receiver) external;
    function removeOperatorFromWhitelist(uint120 id, address operator) external;
    function removePermittedContractReceiverFromAllowlist(uint120 id, address receiver) external;
    function getCollectionSecurityPolicy(address collection) external view returns (CollectionSecurityPolicy memory);
    function getWhitelistedOperators(uint120 id) external view returns (address[] memory);
    function getPermittedContractReceivers(uint120 id) external view returns (address[] memory);
    function isOperatorWhitelisted(uint120 id, address operator) external view returns (bool);
    function isContractReceiverPermitted(uint120 id, address receiver) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "../utils/TransferPolicy.sol";

interface ITransferValidator {
    function applyCollectionTransferPolicy(address caller, address from, address to) external view;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import "../../access/OwnablePermissions.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

abstract contract ERC721OpenZeppelinBase is ERC721 {

    // Token name
    string internal _contractName;

    // Token symbol
    string internal _contractSymbol;

    function name() public view virtual override returns (string memory) {
        return _contractName;
    }

    function symbol() public view virtual override returns (string memory) {
        return _contractSymbol;
    }

    function _setNameAndSymbol(string memory name_, string memory symbol_) internal {
        _contractName = name_;
        _contractSymbol = symbol_;
    }
}

abstract contract ERC721OpenZeppelin is ERC721OpenZeppelinBase {
    constructor(string memory name_, string memory symbol_) ERC721("", "") {
        _setNameAndSymbol(name_, symbol_);
    }
}

abstract contract ERC721OpenZeppelinInitializable is OwnablePermissions, ERC721OpenZeppelinBase {

    error ERC721OpenZeppelinInitializable__AlreadyInitializedERC721();

    /// @notice Specifies whether or not the contract is initialized
    bool private _erc721Initialized;

    /// @dev Initializes parameters of ERC721 tokens.
    /// These cannot be set in the constructor because this contract is optionally compatible with EIP-1167.
    function initializeERC721(string memory name_, string memory symbol_) public {
        _requireCallerIsContractOwner();

        if(_erc721Initialized) {
            revert ERC721OpenZeppelinInitializable__AlreadyInitializedERC721();
        }

        _erc721Initialized = true;

        _setNameAndSymbol(name_, symbol_);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "../access/OwnablePermissions.sol";
import "../interfaces/ICreatorToken.sol";
import "../interfaces/ICreatorTokenTransferValidator.sol";
import "../utils/TransferValidation.sol";
import "@openzeppelin/contracts/interfaces/IERC165.sol";

/**
 * @title CreatorTokenBase
 * @author Limit Break, Inc.
 * @notice CreatorTokenBase is an abstract contract that provides basic functionality for managing token 
 * transfer policies through an implementation of ICreatorTokenTransferValidator. This contract is intended to be used
 * as a base for creator-specific token contracts, enabling customizable transfer restrictions and security policies.
 *
 * <h4>Features:</h4>
 * <ul>Ownable: This contract can have an owner who can set and update the transfer validator.</ul>
 * <ul>TransferValidation: Implements the basic token transfer validation interface.</ul>
 * <ul>ICreatorToken: Implements the interface for creator tokens, providing view functions for token security policies.</ul>
 *
 * <h4>Benefits:</h4>
 * <ul>Provides a flexible and modular way to implement custom token transfer restrictions and security policies.</ul>
 * <ul>Allows creators to enforce policies such as whitelisted operators and permitted contract receivers.</ul>
 * <ul>Can be easily integrated into other token contracts as a base contract.</ul>
 *
 * <h4>Intended Usage:</h4>
 * <ul>Use as a base contract for creator token implementations that require advanced transfer restrictions and 
 *   security policies.</ul>
 * <ul>Set and update the ICreatorTokenTransferValidator implementation contract to enforce desired policies for the 
 *   creator token.</ul>
 */
abstract contract CreatorTokenBase is OwnablePermissions, TransferValidation, ICreatorToken {
    
    error CreatorTokenBase__InvalidTransferValidatorContract();
    error CreatorTokenBase__SetTransferValidatorFirst();

    address public constant DEFAULT_TRANSFER_VALIDATOR = address(0x0000721C310194CcfC01E523fc93C9cCcFa2A0Ac);
    TransferSecurityLevels public constant DEFAULT_TRANSFER_SECURITY_LEVEL = TransferSecurityLevels.One;
    uint120 public constant DEFAULT_OPERATOR_WHITELIST_ID = uint120(1);

    ICreatorTokenTransferValidator private transferValidator;

    /**
     * @notice Allows the contract owner to set the transfer validator to the official validator contract
     *         and set the security policy to the recommended default settings.
     * @dev    May be overridden to change the default behavior of an individual collection.
     */
    function setToDefaultSecurityPolicy() public virtual {
        _requireCallerIsContractOwner();
        setTransferValidator(DEFAULT_TRANSFER_VALIDATOR);
        ICreatorTokenTransferValidator(DEFAULT_TRANSFER_VALIDATOR).setTransferSecurityLevelOfCollection(address(this), DEFAULT_TRANSFER_SECURITY_LEVEL);
        ICreatorTokenTransferValidator(DEFAULT_TRANSFER_VALIDATOR).setOperatorWhitelistOfCollection(address(this), DEFAULT_OPERATOR_WHITELIST_ID);
    }

    /**
     * @notice Allows the contract owner to set the transfer validator to a custom validator contract
     *         and set the security policy to their own custom settings.
     */
    function setToCustomValidatorAndSecurityPolicy(
        address validator, 
        TransferSecurityLevels level, 
        uint120 operatorWhitelistId, 
        uint120 permittedContractReceiversAllowlistId) public {
        _requireCallerIsContractOwner();

        setTransferValidator(validator);

        ICreatorTokenTransferValidator(validator).
            setTransferSecurityLevelOfCollection(address(this), level);

        ICreatorTokenTransferValidator(validator).
            setOperatorWhitelistOfCollection(address(this), operatorWhitelistId);

        ICreatorTokenTransferValidator(validator).
            setPermittedContractReceiverAllowlistOfCollection(address(this), permittedContractReceiversAllowlistId);
    }

    /**
     * @notice Allows the contract owner to set the security policy to their own custom settings.
     * @dev    Reverts if the transfer validator has not been set.
     */
    function setToCustomSecurityPolicy(
        TransferSecurityLevels level, 
        uint120 operatorWhitelistId, 
        uint120 permittedContractReceiversAllowlistId) public {
        _requireCallerIsContractOwner();

        ICreatorTokenTransferValidator validator = getTransferValidator();
        if (address(validator) == address(0)) {
            revert CreatorTokenBase__SetTransferValidatorFirst();
        }

        validator.setTransferSecurityLevelOfCollection(address(this), level);
        validator.setOperatorWhitelistOfCollection(address(this), operatorWhitelistId);
        validator.setPermittedContractReceiverAllowlistOfCollection(address(this), permittedContractReceiversAllowlistId);
    }

    /**
     * @notice Sets the transfer validator for the token contract.
     *
     * @dev    Throws when provided validator contract is not the zero address and doesn't support 
     *         the ICreatorTokenTransferValidator interface. 
     * @dev    Throws when the caller is not the contract owner.
     *
     * @dev    <h4>Postconditions:</h4>
     *         1. The transferValidator address is updated.
     *         2. The `TransferValidatorUpdated` event is emitted.
     *
     * @param transferValidator_ The address of the transfer validator contract.
     */
    function setTransferValidator(address transferValidator_) public {
        _requireCallerIsContractOwner();

        bool isValidTransferValidator = false;

        if(transferValidator_.code.length > 0) {
            try IERC165(transferValidator_).supportsInterface(type(ICreatorTokenTransferValidator).interfaceId) 
                returns (bool supportsInterface) {
                isValidTransferValidator = supportsInterface;
            } catch {}
        }

        if(transferValidator_ != address(0) && !isValidTransferValidator) {
            revert CreatorTokenBase__InvalidTransferValidatorContract();
        }

        emit TransferValidatorUpdated(address(transferValidator), transferValidator_);

        transferValidator = ICreatorTokenTransferValidator(transferValidator_);
    }

    /**
     * @notice Returns the transfer validator contract address for this token contract.
     */
    function getTransferValidator() public view override returns (ICreatorTokenTransferValidator) {
        return transferValidator;
    }

    /**
     * @notice Returns the security policy for this token contract, which includes:
     *         Transfer security level, operator whitelist id, permitted contract receiver allowlist id.
     */
    function getSecurityPolicy() public view override returns (CollectionSecurityPolicy memory) {
        if (address(transferValidator) != address(0)) {
            return transferValidator.getCollectionSecurityPolicy(address(this));
        }

        return CollectionSecurityPolicy({
            transferSecurityLevel: TransferSecurityLevels.Zero,
            operatorWhitelistId: 0,
            permittedContractReceiversId: 0
        });
    }

    /**
     * @notice Returns the list of all whitelisted operators for this token contract.
     * @dev    This can be an expensive call and should only be used in view-only functions.
     */
    function getWhitelistedOperators() public view override returns (address[] memory) {
        if (address(transferValidator) != address(0)) {
            return transferValidator.getWhitelistedOperators(
                transferValidator.getCollectionSecurityPolicy(address(this)).operatorWhitelistId);
        }

        return new address[](0);
    }

    /**
     * @notice Returns the list of permitted contract receivers for this token contract.
     * @dev    This can be an expensive call and should only be used in view-only functions.
     */
    function getPermittedContractReceivers() public view override returns (address[] memory) {
        if (address(transferValidator) != address(0)) {
            return transferValidator.getPermittedContractReceivers(
                transferValidator.getCollectionSecurityPolicy(address(this)).permittedContractReceiversId);
        }

        return new address[](0);
    }

    /**
     * @notice Checks if an operator is whitelisted for this token contract.
     * @param operator The address of the operator to check.
     */
    function isOperatorWhitelisted(address operator) public view override returns (bool) {
        if (address(transferValidator) != address(0)) {
            return transferValidator.isOperatorWhitelisted(
                transferValidator.getCollectionSecurityPolicy(address(this)).operatorWhitelistId, operator);
        }

        return false;
    }

    /**
     * @notice Checks if a contract receiver is permitted for this token contract.
     * @param receiver The address of the receiver to check.
     */
    function isContractReceiverPermitted(address receiver) public view override returns (bool) {
        if (address(transferValidator) != address(0)) {
            return transferValidator.isContractReceiverPermitted(
                transferValidator.getCollectionSecurityPolicy(address(this)).permittedContractReceiversId, receiver);
        }

        return false;
    }

    /**
     * @notice Determines if a transfer is allowed based on the token contract's security policy.  Use this function
     *         to simulate whether or not a transfer made by the specified `caller` from the `from` address to the `to`
     *         address would be allowed by this token's security policy.
     *
     * @notice This function only checks the security policy restrictions and does not check whether token ownership
     *         or approvals are in place. 
     *
     * @param caller The address of the simulated caller.
     * @param from   The address of the sender.
     * @param to     The address of the receiver.
     * @return       True if the transfer is allowed, false otherwise.
     */
    function isTransferAllowed(address caller, address from, address to) public view override returns (bool) {
        if (address(transferValidator) != address(0)) {
            try transferValidator.applyCollectionTransferPolicy(caller, from, to) {
                return true;
            } catch {
                return false;
            }
        }
        return true;
    }

    /**
     * @dev Pre-validates a token transfer, reverting if the transfer is not allowed by this token's security policy.
     *      Inheriting contracts are responsible for overriding the _beforeTokenTransfer function, or its equivalent
     *      and calling _validateBeforeTransfer so that checks can be properly applied during token transfers.
     *
     * @dev Throws when the transfer doesn't comply with the collection's transfer policy, if the transferValidator is
     *      set to a non-zero address.
     *
     * @param caller  The address of the caller.
     * @param from    The address of the sender.
     * @param to      The address of the receiver.
     */
    function _preValidateTransfer(
        address caller, 
        address from, 
        address to, 
        uint256 /*tokenId*/, 
        uint256 /*value*/) internal virtual override {
        if (address(transferValidator) != address(0)) {
            transferValidator.applyCollectionTransferPolicy(caller, from, to);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

enum AllowlistTypes {
    Operators,
    PermittedContractReceivers
}

enum ReceiverConstraints {
    None,
    NoCode,
    EOA
}

enum CallerConstraints {
    None,
    OperatorWhitelistEnableOTC,
    OperatorWhitelistDisableOTC
}

enum StakerConstraints {
    None,
    CallerIsTxOrigin,
    EOA
}

enum TransferSecurityLevels {
    Zero,
    One,
    Two,
    Three,
    Four,
    Five,
    Six
}

struct TransferSecurityPolicy {
    CallerConstraints callerConstraints;
    ReceiverConstraints receiverConstraints;
}

struct CollectionSecurityPolicy {
    TransferSecurityLevels transferSecurityLevel;
    uint120 operatorWhitelistId;
    uint120 permittedContractReceiversId;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/utils/Context.sol";

/**
 * @title TransferValidation
 * @author Limit Break, Inc.
 * @notice A mix-in that can be combined with ERC-721 contracts to provide more granular hooks.
 * Openzeppelin's ERC721 contract only provides hooks for before and after transfer.  This allows
 * developers to validate or customize transfers within the context of a mint, a burn, or a transfer.
 */
abstract contract TransferValidation is Context {
    
    error ShouldNotMintToBurnAddress();

    /// @dev Inheriting contracts should call this function in the _beforeTokenTransfer function to get more granular hooks.
    function _validateBeforeTransfer(address from, address to, uint256 tokenId) internal virtual {
        bool fromZeroAddress = from == address(0);
        bool toZeroAddress = to == address(0);

        if(fromZeroAddress && toZeroAddress) {
            revert ShouldNotMintToBurnAddress();
        } else if(fromZeroAddress) {
            _preValidateMint(_msgSender(), to, tokenId, msg.value);
        } else if(toZeroAddress) {
            _preValidateBurn(_msgSender(), from, tokenId, msg.value);
        } else {
            _preValidateTransfer(_msgSender(), from, to, tokenId, msg.value);
        }
    }

    /// @dev Inheriting contracts should call this function in the _afterTokenTransfer function to get more granular hooks.
    function _validateAfterTransfer(address from, address to, uint256 tokenId) internal virtual {
        bool fromZeroAddress = from == address(0);
        bool toZeroAddress = to == address(0);

        if(fromZeroAddress && toZeroAddress) {
            revert ShouldNotMintToBurnAddress();
        } else if(fromZeroAddress) {
            _postValidateMint(_msgSender(), to, tokenId, msg.value);
        } else if(toZeroAddress) {
            _postValidateBurn(_msgSender(), from, tokenId, msg.value);
        } else {
            _postValidateTransfer(_msgSender(), from, to, tokenId, msg.value);
        }
    }

    /// @dev Optional validation hook that fires before a mint
    function _preValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {}

    /// @dev Optional validation hook that fires after a mint
    function _postValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {}

    /// @dev Optional validation hook that fires before a burn
    function _preValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {}

    /// @dev Optional validation hook that fires after a burn
    function _postValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {}

    /// @dev Optional validation hook that fires before a transfer
    function _preValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {}

    /// @dev Optional validation hook that fires after a transfer
    function _postValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/Clones.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create(0, 0x09, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create2(0, 0x09, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(add(ptr, 0x38), deployer)
            mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff)
            mstore(add(ptr, 0x14), implementation)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73)
            mstore(add(ptr, 0x58), salt)
            mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37))
            predicted := keccak256(add(ptr, 0x43), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt
    ) internal view returns (address predicted) {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/ERC1155.sol)

pragma solidity ^0.8.0;

import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the basic standard multi-token.
 * See https://eips.ethereum.org/EIPS/eip-1155
 * Originally based on code by Enjin: https://github.com/enjin/erc-1155
 *
 * _Available since v3.1._
 */
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
    using Address for address;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private _balances;

    // Mapping from account to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
    string private _uri;

    /**
     * @dev See {_setURI}.
     */
    constructor(string memory uri_) {
        _setURI(uri_);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC1155).interfaceId ||
            interfaceId == type(IERC1155MetadataURI).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC1155MetadataURI-uri}.
     *
     * This implementation returns the same URI for *all* token types. It relies
     * on the token type ID substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * Clients calling this function must replace the `\{id\}` substring with the
     * actual token type ID.
     */
    function uri(uint256) public view virtual override returns (string memory) {
        return _uri;
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
        require(account != address(0), "ERC1155: address zero is not a valid owner");
        return _balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(
        address[] memory accounts,
        uint256[] memory ids
    ) public view virtual override returns (uint256[] memory) {
        require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");

        uint256[] memory batchBalances = new uint256[](accounts.length);

        for (uint256 i = 0; i < accounts.length; ++i) {
            batchBalances[i] = balanceOf(accounts[i], ids[i]);
        }

        return batchBalances;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[account][operator];
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not token owner or approved"
        );
        _safeTransferFrom(from, to, id, amount, data);
    }

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not token owner or approved"
        );
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }
        _balances[id][to] += amount;

        emit TransferSingle(operator, from, to, id, amount);

        _afterTokenTransfer(operator, from, to, ids, amounts, data);

        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; ++i) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
            _balances[id][to] += amount;
        }

        emit TransferBatch(operator, from, to, ids, amounts);

        _afterTokenTransfer(operator, from, to, ids, amounts, data);

        _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
    }

    /**
     * @dev Sets a new URI for all token types, by relying on the token type ID
     * substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * By this mechanism, any occurrence of the `\{id\}` substring in either the
     * URI or any of the amounts in the JSON file at said URI will be replaced by
     * clients with the token type ID.
     *
     * For example, the `https://token-cdn-domain/\{id\}.json` URI would be
     * interpreted by clients as
     * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
     * for token type ID 0x4cce0.
     *
     * See {uri}.
     *
     * Because these URIs cannot be meaningfully represented by the {URI} event,
     * this function emits no events.
     */
    function _setURI(string memory newuri) internal virtual {
        _uri = newuri;
    }

    /**
     * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _mint(address to, uint256 id, uint256 amount, bytes memory data) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        _balances[id][to] += amount;
        emit TransferSingle(operator, address(0), to, id, amount);

        _afterTokenTransfer(operator, address(0), to, ids, amounts, data);

        _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; i++) {
            _balances[ids[i]][to] += amounts[i];
        }

        emit TransferBatch(operator, address(0), to, ids, amounts);

        _afterTokenTransfer(operator, address(0), to, ids, amounts, data);

        _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
    }

    /**
     * @dev Destroys `amount` tokens of token type `id` from `from`
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `from` must have at least `amount` tokens of token type `id`.
     */
    function _burn(address from, uint256 id, uint256 amount) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }

        emit TransferSingle(operator, from, address(0), id, amount);

        _afterTokenTransfer(operator, from, address(0), ids, amounts, "");
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     */
    function _burnBatch(address from, uint256[] memory ids, uint256[] memory amounts) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
        }

        emit TransferBatch(operator, from, address(0), ids, amounts);

        _afterTokenTransfer(operator, from, address(0), ids, amounts, "");
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC1155: setting approval status for self");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `ids` and `amounts` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `id` and `amount` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    function _doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
                if (response != IERC1155Receiver.onERC1155Received.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non-ERC1155Receiver implementer");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
                bytes4 response
            ) {
                if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non-ERC1155Receiver implementer");
            }
        }
    }

    function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
        uint256[] memory array = new uint256[](1);
        array[0] = element;

        return array;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)

pragma solidity ^0.8.0;

import "../IERC1155.sol";

/**
 * @dev Interface of the optional ERC1155MetadataExtension interface, as defined
 * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155MetadataURI is IERC1155 {
    /**
     * @dev Returns the URI for token type `id`.
     *
     * If the `\{id\}` substring is present in the URI, it must be replaced by
     * clients with the actual token type ID.
     */
    function uri(uint256 id) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(
        address[] calldata accounts,
        uint256[] calldata ids
    ) external view returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
     * @dev Handles the receipt of a single ERC1155 token type. This function is
     * called at the end of a `safeTransferFrom` after the balance has been updated.
     *
     * NOTE: To accept the transfer, this must return
     * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
     * (i.e. 0xf23a6e61, or its own function selector).
     *
     * @param operator The address which initiated the transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param id The ID of the token being transferred
     * @param value The amount of tokens being transferred
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
     */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
     * @dev Handles the receipt of a multiple ERC1155 token types. This function
     * is called at the end of a `safeBatchTransferFrom` after the balances have
     * been updated.
     *
     * NOTE: To accept the transfer(s), this must return
     * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
     * (i.e. 0xbc197c81, or its own function selector).
     *
     * @param operator The address which initiated the batch transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param ids An array containing ids of each token being transferred (order and length must match values array)
     * @param values An array containing amounts of each token being transferred (order and length must match ids array)
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
     */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        require(owner != address(0), "ERC721: invalid token ID");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        _requireMinted(tokenId);

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner or approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(address from, address to, uint256 tokenId) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
        _safeTransfer(from, to, tokenId, data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownerOf(tokenId) != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId, 1);

        // Check that tokenId was not minted by `_beforeTokenTransfer` hook
        require(!_exists(tokenId), "ERC721: token already minted");

        unchecked {
            // Will not overflow unless all 2**256 token ids are minted to the same owner.
            // Given that tokens are minted one by one, it is impossible in practice that
            // this ever happens. Might change if we allow batch minting.
            // The ERC fails to describe this case.
            _balances[to] += 1;
        }

        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId, 1);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId, 1);

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721.ownerOf(tokenId);

        // Clear approvals
        delete _tokenApprovals[tokenId];

        unchecked {
            // Cannot overflow, as that would require more tokens to be burned/transferred
            // out than the owner initially received through minting and transferring in.
            _balances[owner] -= 1;
        }
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId, 1);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(address from, address to, uint256 tokenId) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId, 1);

        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");

        // Clear approvals from the previous owner
        delete _tokenApprovals[tokenId];

        unchecked {
            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:
            // `from`'s balance is the number of token held, which is at least one before the current
            // transfer.
            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require
            // all 2**256 token ids to be minted, which in practice is impossible.
            _balances[from] -= 1;
            _balances[to] += 1;
        }
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId, 1);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
     * that `ownerOf(tokenId)` is `a`.
     */
    // solhint-disable-next-line func-name-mixedcase
    function __unsafe_increaseBalance(address account, uint256 amount) internal {
        _balances[account] += amount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IAllowanceTransfer {
  struct PermitDetails {
    address token;
    uint160 amount;
    uint48 expiration;
    uint48 nonce;
  }

  struct PermitBatch {
    PermitDetails[] details;
    address spender;
    uint256 sigDeadline;
  }

  struct AllowanceTransferDetails {
    address from;
    address to;
    uint160 amount;
    address token;
  }

  function permit(
    address owner,
    PermitBatch memory permitBatch,
    bytes calldata signature
  ) external;

  function transferFrom(AllowanceTransferDetails[] calldata transferDetails) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IBlur {
  enum Side {
    Buy,
    Sell
  }

  enum AssetType {
    ERC721,
    ERC1155
  }

  enum SignatureVersion {
    Single,
    Bulk
  }

  struct Fee {
    uint16 rate;
    address payable recipient;
  }

  struct Order {
    address trader;
    Side side;
    address matchingPolicy;
    IERC165 collection;
    uint256 tokenId;
    uint256 amount;
    address paymentToken;
    uint256 price;
    uint256 listingTime;
    uint256 expirationTime;
    Fee[] fees;
    uint256 salt;
    bytes extraParams;
  }

  struct Input {
    Order order;
    uint8 v;
    bytes32 r;
    bytes32 s;
    bytes extraSignature;
    SignatureVersion signatureVersion;
    uint256 blockNumber;
  }

  function execute(Input calldata sell, Input calldata buy) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ICaviarPoolV1 {
  struct Message {
    bytes32 id;
    bytes payload;
    uint256 timestamp;
    bytes signature;
  }

  function nft() external returns (address);

  function baseToken() external returns (address);

  function buyQuote(uint256 outputAmount) external view returns (uint256);

  function nftBuy(
    uint256[] calldata tokenIds,
    uint256 maxInputAmount,
    uint256 deadline
  ) external payable returns (uint256 inputAmount);

  function nftSell(
    uint256[] calldata tokenIds,
    uint256 minOutputAmount,
    uint256 deadline,
    bytes32[][] calldata proofs,
    Message[] calldata messages
  ) external returns (uint256 outputAmount);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface ICollectionPool {
  enum PoolType {
    TOKEN,
    NFT,
    TRADE
  }

  enum PoolVariant {
    ENUMERABLE_ETH,
    MISSING_ENUMERABLE_ETH,
    ENUMERABLE_ERC20,
    MISSING_ENUMERABLE_ERC20
  }

  struct CurveParams {
    uint128 spotPrice;
    uint128 delta;
    bytes props;
    bytes state;
  }

  struct CurveFees {
    uint256 trade;
    uint256 protocol;
    uint256[] royalties;
  }

  function nft() external returns (IERC721);

  function token() external returns (IERC20);

  function poolType() external view returns (PoolType);

  function poolVariant() external pure returns (PoolVariant);

  function externalFilter() external view returns (address);

  function getBuyNFTQuote(
    uint256 numNFTs
  )
    external
    view
    returns (
      CurveParams memory newParams,
      uint256 totalAmount,
      uint256 inputAmount,
      CurveFees memory fees
    );
}

interface ICollectionRouter {
  struct PoolSwapSpecific {
    ICollectionPool pool;
    uint256[] nftIds;
    bytes32[] proof;
    bool[] proofFlags;
    /// @dev only used for selling into pools
    bytes externalFilterContext;
  }

  function swapETHForSpecificNFTs(
    PoolSwapSpecific[] calldata swapList,
    address ethRecipient,
    address nftRecipient,
    uint256 deadline
  ) external payable returns (uint256 remainingValue);

  function swapERC20ForSpecificNFTs(
    PoolSwapSpecific[] calldata swapList,
    uint256 inputAmount,
    address nftRecipient,
    uint256 deadline
  ) external returns (uint256 remainingValue);

  function swapNFTsForToken(
    PoolSwapSpecific[] calldata swapList,
    uint256 minOutput,
    address tokenRecipient,
    uint256 deadline
  ) external returns (uint256 outputAmount);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IConduitController {
  function getConduitCodeHashes()
    external
    view
    returns (bytes32 creationCodeHash, bytes32 runtimeCodeHash);
}

interface IConduit {
  enum ConduitItemType {
    NATIVE, // Unused
    ERC20,
    ERC721,
    ERC1155
  }

  struct ConduitTransfer {
    ConduitItemType itemType;
    address token;
    address from;
    address to;
    uint256 identifier;
    uint256 amount;
  }

  function execute(ConduitTransfer[] calldata transfers) external returns (bytes4 magicValue);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ICryptoPunksMarket {
  struct BuyOrder {
    address buyer;
    uint256 price;
    uint256 punkIndex;
  }

  function punkIndexToAddress(uint256 punkIndex) external view returns (address owner);

  function balanceOf(address owner) external view returns (uint256 balance);

  function transferPunk(address to, uint256 punkIndex) external;

  function buyPunk(uint256 punkIndex) external payable;

  function offerPunkForSaleToAddress(
    uint256 punkIndex,
    uint256 minSalePriceInWei,
    address to
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IDittoPool {
  struct SwapTokensForNftsArgs {
    uint256[] nftIds;
    uint256 maxExpectedTokenInput;
    address tokenSender;
    address nftRecipient;
    bytes swapData;
  }

  struct SwapNftsForTokensArgs {
    uint256[] nftIds;
    uint256[] lpIds;
    uint256 minExpectedTokenOutput;
    address nftSender;
    address tokenRecipient;
    bytes permitterData;
    bytes swapData;
  }

  function token() external returns (IERC20);

  function swapNftsForTokens(
    SwapNftsForTokensArgs calldata args_
  ) external returns (uint256 outputAmount);

  function swapTokensForNfts(
    SwapTokensForNftsArgs calldata args_
  ) external returns (uint256 inputAmount);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IEIP2612 {
  function permit(
    address owner,
    address spender,
    uint256 value,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) external;

  function nonces(address owner) external view returns (uint256);

  function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IElement {
  struct Signature {
    uint8 signatureType;
    uint8 v;
    bytes32 r;
    bytes32 s;
  }

  struct Property {
    address propertyValidator;
    bytes propertyData;
  }

  struct Fee {
    address recipient;
    uint256 amount;
    bytes feeData;
  }

  struct NFTSellOrder {
    address maker;
    address taker;
    uint256 expiry;
    uint256 nonce;
    IERC20 erc20Token;
    uint256 erc20TokenAmount;
    Fee[] fees;
    address nft;
    uint256 nftId;
  }

  struct NFTBuyOrder {
    address maker;
    address taker;
    uint256 expiry;
    uint256 nonce;
    IERC20 erc20Token;
    uint256 erc20TokenAmount;
    Fee[] fees;
    address nft;
    uint256 nftId;
    Property[] nftProperties;
  }

  struct ERC1155SellOrder {
    address maker;
    address taker;
    uint256 expiry;
    uint256 nonce;
    IERC20 erc20Token;
    uint256 erc20TokenAmount;
    Fee[] fees;
    address erc1155Token;
    uint256 erc1155TokenId;
    // End of fields shared with NFTOrder
    uint128 erc1155TokenAmount;
  }

  struct ERC1155BuyOrder {
    address maker;
    address taker;
    uint256 expiry;
    uint256 nonce;
    IERC20 erc20Token;
    uint256 erc20TokenAmount;
    Fee[] fees;
    address erc1155Token;
    uint256 erc1155TokenId;
    Property[] erc1155TokenProperties;
    // End of fields shared with NFTOrder
    uint128 erc1155TokenAmount;
  }

  struct BatchSignedOrder {
    address maker;
    uint256 listingTime;
    uint256 expirationTime;
    uint256 startNonce;
    address erc20Token;
    address platformFeeRecipient;
    uint8 v;
    bytes32 r;
    bytes32 s;
    bytes collectionsBytes;
  }

  /// @param data1 [56 bits(startNonce) + 8 bits(v) + 32 bits(listingTime) + 160 bits(maker)]
  /// @param data2 [64 bits(taker part1) + 32 bits(expiryTime) + 160 bits(erc20Token)]
  /// @param data3 [96 bits(taker part2) + 160 bits(platformFeeRecipient)]
  struct Parameter {
    uint256 data1;
    uint256 data2;
    uint256 data3;
    bytes32 r;
    bytes32 s;
  }

  /// @param data1 [56 bits(startNonce) + 8 bits(v) + 32 bits(listingTime) + 160 bits(maker)]
  /// @param data2 [64 bits(taker part1) + 32 bits(expiryTime) + 160 bits(erc20Token)]
  /// @param data3 [96 bits(taker part2) + 160 bits(platformFeeRecipient)]
  struct Parameters {
    uint256 data1;
    uint256 data2;
    uint256 data3;
    bytes32 r;
    bytes32 s;
    bytes collections;
  }

  function buyERC721Ex(
    NFTSellOrder calldata sellOrder,
    Signature calldata signature,
    address taker,
    bytes calldata takerData
  ) external payable;

  function batchBuyERC721sEx(
    NFTSellOrder[] calldata sellOrders,
    Signature[] calldata signatures,
    address[] calldata takers,
    bytes[] calldata takerDatas,
    bool revertIfIncomplete
  ) external payable returns (bool[] memory successes);

  function buyERC1155Ex(
    ERC1155SellOrder calldata sellOrder,
    Signature calldata signature,
    address taker,
    uint128 erc1155BuyAmount,
    bytes calldata takerData
  ) external payable;

  function batchBuyERC1155sEx(
    ERC1155SellOrder[] calldata sellOrders,
    Signature[] calldata signatures,
    address[] calldata takers,
    uint128[] calldata erc1155TokenAmounts,
    bytes[] calldata takerDatas,
    bool revertIfIncomplete
  ) external payable returns (bool[] memory successes);

  function sellERC721(
    NFTBuyOrder calldata buyOrder,
    Signature calldata signature,
    uint256 erc721TokenId,
    bool unwrapNativeToken,
    bytes calldata takerData
  ) external;

  function sellERC1155(
    ERC1155BuyOrder calldata buyOrder,
    Signature calldata signature,
    uint256 erc1155TokenId,
    uint128 erc1155SellAmount,
    bool unwrapNativeToken,
    bytes calldata takerData
  ) external;

  function fillBatchSignedERC721Order(Parameter calldata parameter, bytes calldata collections)
    external
    payable;

  /// @param additional1 [96 bits(withdrawETHAmount) + 160 bits(erc20Token)]
  /// @param additional2 [8 bits(revertIfIncomplete) + 88 bits(unused) + 160 bits(royaltyFeeRecipient)]
  function fillBatchSignedERC721Orders(
    Parameters[] calldata parameters,
    uint256 additional1,
    uint256 additional2
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

enum ExchangeKind {
  WYVERN_V23,
  LOOKS_RARE,
  ZEROEX_V4,
  FOUNDATION,
  X2Y2,
  SEAPORT
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface IFoundation {
  function buyV2(
    IERC721 nftContract,
    uint256 tokenId,
    uint256 maxPrice,
    address referrer
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface ILooksRare {
  struct MakerOrder {
    bool isOrderAsk;
    address signer;
    IERC165 collection;
    uint256 price;
    uint256 tokenId;
    uint256 amount;
    address strategy;
    IERC20 currency;
    uint256 nonce;
    uint256 startTime;
    uint256 endTime;
    uint256 minPercentageToAsk;
    bytes params;
    uint8 v;
    bytes32 r;
    bytes32 s;
  }

  struct TakerOrder {
    bool isOrderAsk;
    address taker;
    uint256 price;
    uint256 tokenId;
    uint256 minPercentageToAsk;
    bytes params;
  }

  function transferSelectorNFT() external view returns (ILooksRareTransferSelectorNFT);

  function matchAskWithTakerBidUsingETHAndWETH(
    TakerOrder calldata takerBid,
    MakerOrder calldata makerAsk
  ) external payable;

  function matchAskWithTakerBid(
    TakerOrder calldata takerBid,
    MakerOrder calldata makerAsk
  ) external payable;

  function matchBidWithTakerAsk(
    TakerOrder calldata takerAsk,
    MakerOrder calldata makerBid
  ) external;
}

interface ILooksRareTransferSelectorNFT {
  function TRANSFER_MANAGER_ERC721() external view returns (address);

  function TRANSFER_MANAGER_ERC1155() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface ILooksRareV2 {
  enum QuoteType {
    Bid,
    Ask
  }

  enum CollectionType {
    ERC721,
    ERC1155
  }

  enum MerkleTreeNodePosition {
    Left,
    Right
  }

  struct MakerOrder {
    QuoteType quoteType;
    uint256 globalNonce;
    uint256 subsetNonce;
    uint256 orderNonce;
    uint256 strategyId;
    CollectionType collectionType;
    address collection;
    IERC20 currency;
    address signer;
    uint256 startTime;
    uint256 endTime;
    uint256 price;
    uint256[] itemIds;
    uint256[] amounts;
    bytes additionalParameters;
  }

  struct TakerOrder {
    address recipient;
    bytes additionalParameters;
  }

  struct MerkleTreeNode {
    bytes32 value;
    MerkleTreeNodePosition position;
  }

  struct MerkleTree {
    bytes32 root;
    MerkleTreeNode[] proof;
  }

  function transferManager() external view returns (ITransferManager);

  function executeTakerAsk(
    TakerOrder calldata takerAsk,
    MakerOrder calldata makerBid,
    bytes calldata makerSignature,
    MerkleTree calldata merkleTree,
    address affiliate
  ) external;

  function executeTakerBid(
    TakerOrder calldata takerBid,
    MakerOrder calldata makerAsk,
    bytes calldata makerSignature,
    MerkleTree calldata merkleTree,
    address affiliate
  ) external payable;
}

interface ITransferManager {
  function grantApprovals(address[] calldata operators) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface IMidasRouter {
  function getMinAmountIn(
    address pair,
    uint256[] calldata tokenIds
  ) external view returns (uint128 totalAmount);
}

interface IMidasPair {
  function sellNFT(uint256 nftId, address to) external returns (uint128 amountOut);

  function buyNFT(uint256 nftId, address to) external;
}

interface IMidasFactory {
  function getPairERC721(address tokenA, address tokenB) external view returns (address pair);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {INFTXVaultFactory} from "./INFTXVaultFactory.sol";

interface INFTXMarketplaceZap {
  function nftxFactory() external view returns (INFTXVaultFactory);

  struct BuyOrder {
    uint256 vaultId;
    address collection;
    uint256[] specificIds;
    uint256 amount;
    address[] path;
    uint256 price;
  }

  struct SellOrder {
    uint256 vaultId;
    address collection;
    IERC20 currency;
    uint256[] specificIds;
    // ERC1155
    uint256[] amounts;
    uint256 price;
    address[] path;
  }

  function mintAndSell721(
    uint256 vaultId,
    uint256[] calldata ids,
    uint256 minEthOut,
    address[] calldata path,
    address to
  ) external;

  function mintAndSell721WETH(
    uint256 vaultId,
    uint256[] calldata ids,
    uint256 minEthOut,
    address[] calldata path,
    address to
  ) external;

  function mintAndSell1155(
    uint256 vaultId,
    uint256[] calldata ids,
    uint256[] calldata amounts,
    uint256 minWethOut,
    address[] calldata path,
    address to
  ) external;

  function mintAndSell1155WETH(
    uint256 vaultId,
    uint256[] calldata ids,
    uint256[] calldata amounts,
    uint256 minWethOut,
    address[] calldata path,
    address to
  ) external;

  function buyAndRedeem(
    uint256 vaultId,
    uint256 amount,
    uint256[] calldata specificIds,
    address[] calldata path,
    address to
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {INFTXVaultFactory} from "./INFTXVaultFactory.sol";

interface INFTXMarketplace0xZap {
  function nftxFactory() external view returns (INFTXVaultFactory);

  struct BuyOrder {
    uint256 vaultId;
    address collection;
    uint256[] specificIds;
    uint256 amount;
    uint256 price;
    bytes swapCallData;
  }

  struct SellOrder {
    uint256 vaultId;
    address collection;
    IERC20 currency;
    uint256[] specificIds;
    // For ERC1155 only
    uint256[] amounts;
    uint256 price;
    bytes swapCallData;
  }

  function mintAndSell721(
    uint256 vaultId,
    uint256[] calldata ids,
    bytes calldata swapCallData,
    address payable to
  ) external;

  function mintAndSell1155(
    uint256 vaultId,
    uint256[] calldata ids,
    uint256[] calldata amounts,
    bytes calldata swapCallData,
    address payable to
  ) external;

  function buyAndRedeem(
    uint256 vaultId,
    uint256 amount,
    uint256[] calldata specificIds,
    bytes calldata swapCallData,
    address payable to
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {INFTXVaultFactory} from "./INFTXVaultFactory.sol";

interface INFTXV3MarketplaceZap {
  function nftxVaultFactory() external view returns (INFTXVaultFactory);

  struct SellOrder {
    uint256 vaultId;
    address collection;
    IERC20 currency;
    uint256[] idsIn;
    // For ERC1155 only
    uint256[] amounts;
    uint256 price;
    bytes executeCallData;
    bool deductRoyalty;
  }

  struct BuyOrder {
    uint256 vaultId;
    address collection;
    uint256[] idsOut;
    uint256 price;
    bytes executeCallData;
    uint256 vTokenPremiumLimit;
    bool deductRoyalty;
  }

  function sell721(
    uint256 vaultId,
    uint256[] calldata idsIn,
    bytes calldata executeCallData,
    address payable to,
    bool deductRoyalty
  ) external;

  function sell1155(
    uint256 vaultId,
    uint256[] calldata idsIn,
    uint256[] calldata amounts,
    bytes calldata executeCallData,
    address payable to,
    bool deductRoyalty
  ) external;

  function buyNFTsWithETH(
    uint256 vaultId,
    uint256[] calldata idsOut,
    bytes calldata executeCallData,
    address payable to,
    uint256 vTokenPremiumLimit,
    bool deductRoyalty
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface INFTXVault {
  function is1155() external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface INFTXVaultFactory {
  function vault(uint256 vaultId) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IPaymentProcessor {
  enum TokenProtocols {
    ERC721,
    ERC1155
  }

  struct SignatureECDSA {
    uint8 v;
    bytes32 r;
    bytes32 s;
  }

  struct MatchedOrder {
    bool sellerAcceptedOffer;
    bool collectionLevelOffer;
    TokenProtocols protocol;
    address paymentCoin;
    address tokenAddress;
    address seller;
    address privateBuyer;
    address buyer;
    address delegatedPurchaser;
    address marketplace;
    uint256 marketplaceFeeNumerator;
    uint256 maxRoyaltyFeeNumerator;
    uint256 listingNonce;
    uint256 offerNonce;
    uint256 listingMinPrice;
    uint256 offerPrice;
    uint256 listingExpiration;
    uint256 offerExpiration;
    uint256 tokenId;
    uint256 amount;
  }

  function buySingleListing(
    MatchedOrder memory saleDetails,
    SignatureECDSA memory signedListing,
    SignatureECDSA memory signedOffer
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IRarible {
  struct AssetType {
    bytes4 assetClass;
    bytes data;
  }

  struct Asset {
    AssetType assetType;
    uint256 value;
  }

  struct Order {
    address maker;
    Asset makeAsset;
    address taker;
    Asset takeAsset;
    uint256 salt;
    uint256 start;
    uint256 end;
    bytes4 dataType;
    bytes data;
  }

  struct NftData {
    uint256 tokenId;
    IERC165 collection;
  }

  function matchOrders(
    Order calldata orderLeft,
    bytes calldata signatureLeft,
    Order calldata orderRight,
    bytes calldata signatureRight
  ) external payable;
}

interface IRaribleTransferManager {
  function TRANSFER_MANAGER() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IReservoirV6_0_1 {
  struct ExecutionInfo {
    address module;
    bytes data;
    uint256 value;
  }

  function execute(ExecutionInfo[] calldata executionInfos) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface ISeaport {
  enum OrderType {
    FULL_OPEN,
    PARTIAL_OPEN,
    FULL_RESTRICTED,
    PARTIAL_RESTRICTED
  }

  enum ItemType {
    NATIVE,
    ERC20,
    ERC721,
    ERC1155,
    ERC721_WITH_CRITERIA,
    ERC1155_WITH_CRITERIA
  }

  enum Side {
    OFFER,
    CONSIDERATION
  }

  struct OfferItem {
    ItemType itemType;
    address token;
    uint256 identifierOrCriteria;
    uint256 startAmount;
    uint256 endAmount;
  }

  struct ConsiderationItem {
    ItemType itemType;
    address token;
    uint256 identifierOrCriteria;
    uint256 startAmount;
    uint256 endAmount;
    address recipient;
  }

  struct SpentItem {
    ItemType itemType;
    address token;
    uint256 identifier;
    uint256 amount;
  }

  struct ReceivedItem {
    ItemType itemType;
    address token;
    uint256 identifier;
    uint256 amount;
    address recipient;
  }

  struct OrderComponents {
    address offerer;
    address zone;
    OfferItem[] offer;
    ConsiderationItem[] consideration;
    OrderType orderType;
    uint256 startTime;
    uint256 endTime;
    bytes32 zoneHash;
    uint256 salt;
    bytes32 conduitKey;
    uint256 counter;
  }

  struct OrderParameters {
    address offerer;
    address zone;
    OfferItem[] offer;
    ConsiderationItem[] consideration;
    OrderType orderType;
    uint256 startTime;
    uint256 endTime;
    bytes32 zoneHash;
    uint256 salt;
    bytes32 conduitKey;
    uint256 totalOriginalConsiderationItems;
  }

  struct Order {
    OrderParameters parameters;
    bytes signature;
  }

  struct AdvancedOrder {
    OrderParameters parameters;
    uint120 numerator;
    uint120 denominator;
    bytes signature;
    bytes extraData;
  }

  struct CriteriaResolver {
    uint256 orderIndex;
    Side side;
    uint256 index;
    uint256 identifier;
    bytes32[] criteriaProof;
  }

  struct FulfillmentComponent {
    uint256 orderIndex;
    uint256 itemIndex;
  }

  struct Fulfillment {
    FulfillmentComponent[] offerComponents;
    FulfillmentComponent[] considerationComponents;
  }

  struct Execution {
    ReceivedItem item;
    address offerer;
    bytes32 conduitKey;
  }

  struct ZoneParameters {
    bytes32 orderHash;
    address fulfiller;
    address offerer;
    SpentItem[] offer;
    ReceivedItem[] consideration;
    bytes extraData;
    bytes32[] orderHashes;
    uint256 startTime;
    uint256 endTime;
    bytes32 zoneHash;
  }

  struct Schema {
    uint256 id;
    bytes metadata;
  }

  function getOrderHash(OrderComponents calldata order) external view returns (bytes32 orderHash);

  function getOrderStatus(bytes32 orderHash)
    external
    view
    returns (
      bool isValidated,
      bool isCancelled,
      uint256 totalFilled,
      uint256 totalSize
    );

  function getCounter(address offerer) external view returns (uint256 counter);

  function fulfillAdvancedOrder(
    AdvancedOrder calldata advancedOrder,
    CriteriaResolver[] calldata criteriaResolvers,
    bytes32 fulfillerConduitKey,
    address recipient
  ) external payable returns (bool fulfilled);

  function fulfillAvailableAdvancedOrders(
    AdvancedOrder[] memory advancedOrders,
    CriteriaResolver[] calldata criteriaResolvers,
    FulfillmentComponent[][] calldata offerFulfillments,
    FulfillmentComponent[][] calldata considerationFulfillments,
    bytes32 fulfillerConduitKey,
    address recipient,
    uint256 maximumFulfilled
  ) external payable returns (bool[] memory availableOrders, Execution[] memory executions);

  function matchOrders(Order[] calldata orders, Fulfillment[] calldata fulfillments)
    external
    payable
    returns (Execution[] memory executions);

  function matchAdvancedOrders(
    AdvancedOrder[] calldata advancedOrders,
    CriteriaResolver[] calldata criteriaResolvers,
    Fulfillment[] calldata fulfillments,
    address recipient
  ) external payable returns (Execution[] memory executions);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface ISudoswapPair {
  enum PairVariant {
    ENUMERABLE_ETH,
    MISSING_ENUMERABLE_ETH,
    ENUMERABLE_ERC20,
    MISSING_ENUMERABLE_ERC20
  }

  function nft() external returns (IERC721);

  function token() external returns (IERC20);

  function pairVariant() external pure returns (PairVariant);

  function getBuyNFTQuote(uint256 numNFTs)
    external
    view
    returns (
      uint8 error,
      uint256 newSpotPrice,
      uint256 newDelta,
      uint256 inputAmount,
      uint256 protocolFee
    );
}

interface ISudoswapRouter {
  struct PairSwapSpecific {
    ISudoswapPair pair;
    uint256[] nftIds;
  }

  function swapETHForSpecificNFTs(
    PairSwapSpecific[] calldata swapList,
    address ethRecipient,
    address nftRecipient,
    uint256 deadline
  ) external payable returns (uint256 remainingValue);

  function swapERC20ForSpecificNFTs(
    PairSwapSpecific[] calldata swapList,
    uint256 inputAmount,
    address nftRecipient,
    uint256 deadline
  ) external returns (uint256 remainingValue);

  function swapNFTsForToken(
    PairSwapSpecific[] calldata swapList,
    uint256 minOutput,
    address tokenRecipient,
    uint256 deadline
  ) external returns (uint256 outputAmount);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface ISudoswapPairV2 {
  enum PairVariant {
    ERC721_ETH,
    ERC721_ERC20,
    ERC1155_ETH,
    ERC1155_ERC20
  }

  function nft() external returns (address);

  function nftId() external returns (uint256 id);

  function token() external returns (IERC20);

  function pairVariant() external pure returns (PairVariant);

  function getBuyNFTQuote(
    uint256 assetId,
    uint256 numNFTs
  )
    external
    view
    returns (
      uint8 error,
      uint256 newSpotPrice,
      uint256 newDelta,
      uint256 inputAmount,
      uint256 protocolFee,
      uint256 royaltyAmount
    );

  function swapTokenForSpecificNFTs(
    uint256[] calldata nftIds,
    uint256 maxExpectedTokenInput,
    address nftRecipient,
    bool isRouter,
    address routerCaller
  ) external payable returns (uint256);

  function swapNFTsForToken(
    uint256[] calldata nftIds,
    uint256 minExpectedTokenOutput,
    address payable tokenRecipient,
    bool isRouter,
    address routerCaller
  ) external returns (uint256 outputAmount);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface ISuperRare {
  function buy(
    IERC721 nftContract,
    uint256 tokenId,
    address currency,
    uint256 price
  ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IUniswapV3Router {
  struct ExactOutputSingleParams {
    IERC20 tokenIn;
    IERC20 tokenOut;
    uint24 fee;
    address recipient;
    uint256 amountOut;
    uint256 amountInMaximum;
    uint160 sqrtPriceLimitX96;
  }

  function exactOutputSingle(ExactOutputSingleParams calldata params)
    external
    payable
    returns (uint256 amountIn);

  
  struct ExactInputSingleParams {
    IERC20 tokenIn;
    IERC20 tokenOut;
    uint24 fee;
    address recipient;
    uint256 amountIn;
    uint256 amountOutMinimum;
    uint160 sqrtPriceLimitX96;
  }

  function exactInputSingle(ExactInputSingleParams calldata params) 
    external
    payable
    returns (uint256 amountOut);

  function refundETH() external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IWETH is IERC20 {
  function deposit() external payable;

  function withdraw(uint256 amount) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IWyvernV23 {
  function registry() external view returns (address);

  function tokenTransferProxy() external view returns (address);

  function atomicMatch_(
    address[14] calldata addrs,
    uint256[18] calldata uints,
    uint8[8] calldata feeMethodsSidesKindsHowToCalls,
    bytes calldata calldataBuy,
    bytes calldata calldataSell,
    bytes calldata replacementPatternBuy,
    bytes calldata replacementPatternSell,
    bytes calldata staticExtradataBuy,
    bytes calldata staticExtradataSell,
    uint8[2] calldata vs,
    bytes32[5] calldata rssMetadata
  ) external payable;
}

interface IWyvernV23ProxyRegistry {
  function registerProxy() external;

  function proxies(address user) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

interface IX2Y2 {
  struct OrderItem {
    uint256 price;
    bytes data;
  }

  struct ERC721Pair {
    IERC721 token;
    uint256 tokenId;
  }

  struct ERC1155Pair {
    IERC1155 token;
    uint256 tokenId;
    uint256 amount;
  }

  struct Order {
    uint256 salt;
    address user;
    uint256 network;
    uint256 intent;
    uint256 delegateType;
    uint256 deadline;
    IERC20 currency;
    bytes dataMask;
    OrderItem[] items;
    bytes32 r;
    bytes32 s;
    uint8 v;
    uint8 signVersion;
  }

  struct SettleShared {
    uint256 salt;
    uint256 deadline;
    uint256 amountToEth;
    uint256 amountToWeth;
    address user;
    bool canFail;
  }

  struct Fee {
    uint256 percentage;
    address to;
  }

  enum Op {
    INVALID,
    COMPLETE_SELL_OFFER,
    COMPLETE_BUY_OFFER,
    CANCEL_OFFER,
    BID,
    COMPLETE_AUCTION,
    REFUND_AUCTION,
    REFUND_AUCTION_STUCK_ITEM
  }

  struct SettleDetail {
    Op op;
    uint256 orderIdx;
    uint256 itemIdx;
    uint256 price;
    bytes32 itemHash;
    address executionDelegate;
    bytes dataReplacement;
    uint256 bidIncentivePct;
    uint256 aucMinIncrementPct;
    uint256 aucIncDurationSecs;
    Fee[] fees;
  }

  struct RunInput {
    Order[] orders;
    SettleDetail[] details;
    SettleShared shared;
    bytes32 r;
    bytes32 s;
    uint8 v;
  }

  function run(RunInput calldata input) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

interface IZeroExV4 {
  struct Property {
    address propertyValidator;
    bytes propertyData;
  }

  struct Fee {
    address recipient;
    uint256 amount;
    bytes feeData;
  }

  struct ERC721Order {
    uint8 direction;
    address maker;
    address taker;
    uint256 expiry;
    uint256 nonce;
    IERC20 erc20Token;
    uint256 erc20TokenAmount;
    Fee[] fees;
    IERC721 erc721Token;
    uint256 erc721TokenId;
    Property[] erc721TokenProperties;
  }

  struct ERC1155Order {
    uint8 direction;
    address maker;
    address taker;
    uint256 expiry;
    uint256 nonce;
    IERC20 erc20Token;
    uint256 erc20TokenAmount;
    Fee[] fees;
    IERC1155 erc1155Token;
    uint256 erc1155TokenId;
    Property[] erc1155TokenProperties;
    uint128 erc1155TokenAmount;
  }

  struct Signature {
    uint8 signatureType;
    uint8 v;
    bytes32 r;
    bytes32 s;
  }

  function buyERC721(
    ERC721Order calldata sellOrder,
    Signature calldata signature,
    bytes memory callbackData
  ) external payable;

  function batchBuyERC721s(
    ERC721Order[] calldata sellOrders,
    Signature[] calldata signatures,
    bytes[] calldata callbackData,
    bool revertIfIncomplete
  ) external payable returns (bool[] memory);

  function sellERC721(
    ERC721Order calldata buyOrder,
    Signature calldata signature,
    uint256 erc721TokenId,
    bool unwrapNativeToken,
    bytes memory callbackData
  ) external;

  function buyERC1155(
    ERC1155Order calldata sellOrder,
    Signature calldata signature,
    uint128 erc1155BuyAmount,
    bytes calldata callbackData
  ) external payable;

  function batchBuyERC1155s(
    ERC1155Order[] calldata sellOrders,
    Signature[] calldata signatures,
    uint128[] calldata erc1155FillAmounts,
    bytes[] calldata callbackData,
    bool revertIfIncomplete
  ) external payable returns (bool[] memory successes);

  function sellERC1155(
    ERC1155Order calldata buyOrder,
    Signature calldata signature,
    uint256 erc1155TokenId,
    uint128 erc1155SellAmount,
    bool unwrapNativeToken,
    bytes calldata callbackData
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IZora {
  function fillAsk(
    address tokenContract,
    uint256 tokenId,
    address fillCurrency,
    uint256 fillAmount,
    address finder
  ) external payable;
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.13;

import {CREATE3} from "solmate/src/utils/CREATE3.sol";

contract Create3Factory {
  function deploy(
    bytes32 salt,
    bytes memory creationCode
  ) external payable returns (address deployed) {
    salt = keccak256(abi.encodePacked(msg.sender, salt));
    return CREATE3.deploy(salt, creationCode, msg.value);
  }

  function getDeployed(address deployer, bytes32 salt) external view returns (address deployed) {
    salt = keccak256(abi.encodePacked(deployer, salt));
    return CREATE3.getDeployed(salt);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.1;

// Based on https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/metatx/ERC2771Context.sol
abstract contract ERC2771Context {
  address private immutable _trustedForwarder;

  constructor(address trustedForwarder) {
    _trustedForwarder = trustedForwarder;
  }

  function isTrustedForwarder(address forwarder) public view virtual returns (bool) {
    return forwarder == _trustedForwarder;
  }

  function _msgSender() internal view virtual returns (address sender) {
    if (isTrustedForwarder(msg.sender)) {
      // The assembly code is more direct than the Solidity version using `abi.decode`
      assembly {
        sender := shr(96, calldataload(sub(calldatasize(), 20)))
      }
    } else {
      return msg.sender;
    }
  }

  function _msgData() internal view virtual returns (bytes calldata) {
    if (isTrustedForwarder(msg.sender)) {
      return msg.data[:msg.data.length - 20];
    } else {
      return msg.data;
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IEIP2981 {
  function royaltyInfo(
    uint256,
    uint256 price
  ) external view returns (address receiver, uint256 amount);
}

// Basic RoyaltyEngine-compliant wrapper around EIP2981
contract LiteRoyaltyEngine {
  function getRoyaltyView(
    address token,
    uint256 tokenId,
    uint256 price
  ) public view returns (address[] memory recipients, uint256[] memory amounts) {
    recipients = new address[](1);
    amounts = new uint256[](1);

    (address recipient, uint256 amount) = IEIP2981(token).royaltyInfo(tokenId, price);
    recipients[0] = recipient;
    amounts[0] = amount;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {ERC2771Context} from "./ERC2771Context.sol";

import {IEIP2612} from "../interfaces/IEIP2612.sol";
import {IReservoirV6_0_1} from "../interfaces/IReservoirV6_0_1.sol";

// Notes:
// - transfer ERC20 tokens via gasless EIP2612 permits
// - ERC2771-compliant for meta-transaction support

contract PermitProxy is ERC2771Context, ReentrancyGuard {
  using SafeERC20 for IERC20;

  // --- Structs ---

  struct Transfer {
    address recipient;
    uint256 amount;
  }

  // https://eips.ethereum.org/EIPS/eip-2612
  struct EIP2612Permit {
    IERC20 token;
    address owner;
    address spender;
    uint256 amount;
    uint256 deadline;
    uint8 v;
    bytes32 r;
    bytes32 s;
  }

  struct EIP2612PermitWithTransfers {
    EIP2612Permit permit;
    Transfer[] transfers;
  }

  // --- Errors ---

  error Unauthorized();

  // --- Fields ---

  IReservoirV6_0_1 internal immutable ROUTER;

  // --- Constructor ---

  constructor(address router, address trustedForwarder) ERC2771Context(trustedForwarder) {
    ROUTER = IReservoirV6_0_1(router);
  }

  // --- Public methods ---

  function eip2612PermitWithTransfersAndExecute(
    EIP2612PermitWithTransfers[] calldata permitsWithTransfers,
    IReservoirV6_0_1.ExecutionInfo[] calldata executionInfos
  ) external nonReentrant {
    uint256 permitsWithTransfersLength = permitsWithTransfers.length;
    for (uint256 i = 0; i < permitsWithTransfersLength; ) {
      EIP2612PermitWithTransfers memory permitWithTransfers = permitsWithTransfers[i];
      EIP2612Permit memory permit = permitWithTransfers.permit;
      Transfer[] memory transfers = permitWithTransfers.transfers;

      if (permit.owner != _msgSender()) {
        revert Unauthorized();
      }

      IEIP2612(address(permit.token)).permit(
        permit.owner,
        permit.spender,
        permit.amount,
        permit.deadline,
        permit.v,
        permit.r,
        permit.s
      );

      uint256 transfersLength = transfers.length;
      for (uint256 j = 0; j < transfersLength; ) {
        permit.token.safeTransferFrom(permit.owner, transfers[j].recipient, transfers[j].amount);

        unchecked {
          ++j;
        }
      }

      unchecked {
        ++i;
      }
    }

    if (executionInfos.length > 0) {
      ROUTER.execute(executionInfos);
    }
  }

  function eip2612Permit(EIP2612Permit[] calldata permits) external nonReentrant {
    uint256 permitsLength = permits.length;
    for (uint256 i = 0; i < permitsLength; ) {
      EIP2612Permit memory permit = permits[i];

      IEIP2612(address(permit.token)).permit(
        permit.owner,
        permit.spender,
        permit.amount,
        permit.deadline,
        permit.v,
        permit.r,
        permit.s
      );

      unchecked {
        ++i;
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC721Receiver} from "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";

import {ICryptoPunksMarket} from "../interfaces/ICryptoPunksMarket.sol";

// Since the CryptoPunks are not ERC721 standard-compliant, you cannot create
// orders for them on modern exchange protocols like Seaport. The workarounds
// include using the wrapped version of CryptoPunks (cumbersome and costly to
// use) or using the native CryptoPunks exchange (it lacks features available
// available when using newer exchange protocols - off-chain orders, bids for
// the whole collection or for a set of attributes). To overcome all of these
// we created a new contract called `PunksProxy` which acts in a similiar way
// to the wrapped version of the CryptoPunks but in a zero-abstraction manner
// with everything abstracted out (eg. no need to wrap or unwrap). It acts as
// a standard ERC721 with the caveat that for any transfer operation there is
// a corresponding CryptoPunks-native approval (basically a private offer for
// a price of zero to the proxy contract).
contract PunksProxy {
  using Address for address;

  // --- Fields ---

  ICryptoPunksMarket public constant EXCHANGE =
    ICryptoPunksMarket(0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB);

  mapping(uint256 => address) private tokenApprovals;
  mapping(address => mapping(address => bool)) private operatorApprovals;

  // --- Errors ---

  error Unauthorized();
  error UnsuccessfulSafeTransfer();

  // --- ERC721 standard events ---

  event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

  event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

  event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

  // --- ERC721 standard methods ---

  function balanceOf(address owner) external view returns (uint256 balance) {
    balance = EXCHANGE.balanceOf(owner);
  }

  function ownerOf(uint256 tokenId) public view returns (address owner) {
    owner = EXCHANGE.punkIndexToAddress(tokenId);
  }

  function getApproved(uint256 tokenId) public view returns (address approved) {
    approved = tokenApprovals[tokenId];
  }

  function isApprovedForAll(address owner, address operator) public view returns (bool approved) {
    approved = operatorApprovals[owner][operator];
  }

  function approve(address to, uint256 tokenId) external {
    address owner = ownerOf(tokenId);
    if (msg.sender != owner && !isApprovedForAll(owner, msg.sender)) {
      revert Unauthorized();
    }

    tokenApprovals[tokenId] = to;
    emit Approval(owner, to, tokenId);
  }

  function setApprovalForAll(address operator, bool approved) external {
    operatorApprovals[msg.sender][operator] = approved;
    emit ApprovalForAll(msg.sender, operator, approved);
  }

  function safeTransferFrom(
    address from,
    address to,
    uint256 tokenId,
    bytes calldata data
  ) external {
    transfer(from, to, tokenId);
    checkOnERC721Received(from, to, tokenId, data);
  }

  function safeTransferFrom(
    address from,
    address to,
    uint256 tokenId
  ) external {
    transfer(from, to, tokenId);
    checkOnERC721Received(from, to, tokenId, "");
  }

  function transferFrom(
    address from,
    address to,
    uint256 tokenId
  ) external {
    transfer(from, to, tokenId);
  }

  function transfer(
    address from,
    address to,
    uint256 tokenId
  ) internal {
    address owner = ownerOf(tokenId);
    if (from != owner) {
      revert Unauthorized();
    }

    if (
      msg.sender != owner &&
      getApproved(tokenId) != msg.sender &&
      !isApprovedForAll(owner, msg.sender)
    ) {
      revert Unauthorized();
    }

    EXCHANGE.buyPunk(tokenId);
    EXCHANGE.transferPunk(to, tokenId);
    emit Transfer(from, to, tokenId);
  }

  function checkOnERC721Received(
    address from,
    address to,
    uint256 tokenId,
    bytes memory data
  ) private {
    if (to.isContract()) {
      try IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, data) returns (
        bytes4 result
      ) {
        if (result != IERC721Receiver.onERC721Received.selector) {
          revert UnsuccessfulSafeTransfer();
        }
      } catch {
        revert UnsuccessfulSafeTransfer();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import {IConduit, IConduitController} from "../interfaces/IConduit.sol";
import {IReservoirV6_0_1} from "../interfaces/IReservoirV6_0_1.sol";

// Forked from:
// https://github.com/ProjectOpenSea/seaport/blob/b13939729001cb12f715d7b73422aafeca0bcd0d/contracts/helpers/TransferHelper.sol
contract ReservoirApprovalProxy is ReentrancyGuard {
  // --- Structs ---

  struct TransferHelperItem {
    IConduit.ConduitItemType itemType;
    address token;
    uint256 identifier;
    uint256 amount;
  }

  struct TransferHelperItemsWithRecipient {
    TransferHelperItem[] items;
    address recipient;
  }

  // --- Errors ---

  error ConduitExecutionFailed();
  error InvalidRecipient();

  // --- Fields ---

  IConduitController internal immutable _CONDUIT_CONTROLLER;
  bytes32 internal immutable _CONDUIT_CREATION_CODE_HASH;
  bytes32 internal immutable _CONDUIT_RUNTIME_CODE_HASH;

  IReservoirV6_0_1 internal immutable _ROUTER;

  // --- Constructor ---

  constructor(address conduitController, address router) {
    IConduitController controller = IConduitController(conduitController);
    (_CONDUIT_CREATION_CODE_HASH, _CONDUIT_RUNTIME_CODE_HASH) = controller.getConduitCodeHashes();

    _CONDUIT_CONTROLLER = controller;
    _ROUTER = IReservoirV6_0_1(router);
  }

  // --- Public methods ---

  function bulkTransferWithExecute(
    TransferHelperItemsWithRecipient[] calldata transfers,
    IReservoirV6_0_1.ExecutionInfo[] calldata executionInfos,
    bytes32 conduitKey
  ) external nonReentrant {
    uint256 numTransfers = transfers.length;

    address conduit = address(
      uint160(
        uint256(
          keccak256(
            abi.encodePacked(
              bytes1(0xff),
              address(_CONDUIT_CONTROLLER),
              conduitKey,
              _CONDUIT_CREATION_CODE_HASH
            )
          )
        )
      )
    );

    uint256 sumOfItemsAcrossAllTransfers;
    unchecked {
      for (uint256 i = 0; i < numTransfers; ++i) {
        TransferHelperItemsWithRecipient calldata transfer = transfers[i];
        sumOfItemsAcrossAllTransfers += transfer.items.length;
      }
    }

    IConduit.ConduitTransfer[] memory conduitTransfers = new IConduit.ConduitTransfer[](
      sumOfItemsAcrossAllTransfers
    );

    uint256 itemIndex;
    unchecked {
      for (uint256 i = 0; i < numTransfers; ++i) {
        TransferHelperItemsWithRecipient calldata transfer = transfers[i];
        TransferHelperItem[] calldata transferItems = transfer.items;

        _checkRecipientIsNotZeroAddress(transfer.recipient);

        uint256 numItemsInTransfer = transferItems.length;
        for (uint256 j = 0; j < numItemsInTransfer; ++j) {
          TransferHelperItem calldata item = transferItems[j];
          conduitTransfers[itemIndex] = IConduit.ConduitTransfer(
            item.itemType,
            item.token,
            msg.sender,
            transfer.recipient,
            item.identifier,
            item.amount
          );

          ++itemIndex;
        }
      }
    }

    bytes4 conduitMagicValue = IConduit(conduit).execute(conduitTransfers);
    if (conduitMagicValue != IConduit.execute.selector) {
      revert ConduitExecutionFailed();
    }

    _ROUTER.execute(executionInfos);
  }

  function _checkRecipientIsNotZeroAddress(address recipient) internal pure {
    if (recipient == address(0x0)) {
      revert InvalidRecipient();
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

// Adapted from:
// https://github.com/boringcrypto/BoringSolidity/blob/e74c5b22a61bfbadd645e51a64aa1d33734d577a/contracts/BoringOwnable.sol
contract TwoStepOwnable {
  // --- Fields ---

  address public owner;
  address public pendingOwner;

  // --- Events ---

  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

  // --- Errors ---

  error InvalidParams();
  error Unauthorized();

  // --- Modifiers ---

  modifier onlyOwner() {
    if (msg.sender != owner) {
      revert Unauthorized();
    }

    _;
  }

  // --- Constructor ---

  constructor(address initialOwner) {
    owner = initialOwner;
    emit OwnershipTransferred(address(0), initialOwner);
  }

  // --- Methods ---

  function transferOwnership(address newOwner) public onlyOwner {
    pendingOwner = newOwner;
  }

  function claimOwnership() public {
    address _pendingOwner = pendingOwner;
    if (msg.sender != _pendingOwner) {
      revert Unauthorized();
    }

    owner = _pendingOwner;
    pendingOwner = address(0);
    emit OwnershipTransferred(owner, _pendingOwner);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

contract WETH9 {
  string public name = "Wrapped Ether";
  string public symbol = "WETH";
  uint8 public decimals = 18;

  event Approval(address indexed src, address indexed guy, uint wad);
  event Transfer(address indexed src, address indexed dst, uint wad);
  event Deposit(address indexed dst, uint wad);
  event Withdrawal(address indexed src, uint wad);

  mapping(address => uint) public balanceOf;
  mapping(address => mapping(address => uint)) public allowance;

  receive() external payable {
    deposit();
  }

  function deposit() public payable {
    balanceOf[msg.sender] += msg.value;
    emit Deposit(msg.sender, msg.value);
  }

  function withdraw(uint wad) public {
    require(balanceOf[msg.sender] >= wad);
    balanceOf[msg.sender] -= wad;
    payable(msg.sender).transfer(wad);
    emit Withdrawal(msg.sender, wad);
  }

  function totalSupply() public view returns (uint) {
    return address(this).balance;
  }

  function approve(address guy, uint wad) public returns (bool) {
    allowance[msg.sender][guy] = wad;
    emit Approval(msg.sender, guy, wad);
    return true;
  }

  function transfer(address dst, uint wad) public returns (bool) {
    return transferFrom(msg.sender, dst, wad);
  }

  function transferFrom(address src, address dst, uint wad) public returns (bool) {
    require(balanceOf[src] >= wad);

    if (src != msg.sender && allowance[src][msg.sender] != type(uint256).max) {
      require(allowance[src][msg.sender] >= wad);
      allowance[src][msg.sender] -= wad;
    }

    balanceOf[src] -= wad;
    balanceOf[dst] += wad;

    emit Transfer(src, dst, wad);

    return true;
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";

contract MockERC1155 is ERC1155 {
  uint256 public nextTokenId;

  constructor() ERC1155("https://mock.com") {}

  function mint(uint256 tokenId) external {
    _mint(msg.sender, tokenId, 1, "");
  }

  function mintMany(uint256 tokenId, uint256 amount) external {
    _mint(msg.sender, tokenId, amount, "");
  }

  function mintWithPrice(uint256 amount, uint256 price) external payable {
    require(msg.value == price * amount, "Insufficient value");
    _mint(msg.sender, nextTokenId++, amount, "");
  }

  function fail() external pure {
    revert();
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MockERC20 is ERC20 {
  constructor() ERC20("Mock", "MOCK") {}

  function mint(uint256 tokenId) external {
    _mint(msg.sender, tokenId);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

contract MockERC721 is ERC721 {
  uint256 public nextTokenId;

  constructor() ERC721("Mock", "MOCK") {}

  function mint(uint256 tokenId) external {
    _safeMint(msg.sender, tokenId);
  }

  function mintWithPrice(uint256 price) external payable {
    require(msg.value == price, "Insufficient value");
    _safeMint(msg.sender, nextTokenId++);
  }

  function fail() external pure {
    revert();
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@limitbreak/creator-token-contracts/contracts/access/OwnableBasic.sol";
import "@limitbreak/creator-token-contracts/contracts/erc721c/ERC721C.sol";

contract MockERC721C is OwnableBasic, ERC721C {
  uint256 public nextTokenId;

  constructor() ERC721OpenZeppelin("Mock", "MOCK") {}

  function mint(uint256 tokenId) external {
    _safeMint(msg.sender, tokenId);
  }

  function mintWithPrice(uint256 price) external payable {
    require(msg.value == price, "Insufficient value");
    _safeMint(msg.sender, nextTokenId++);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseModule} from "./BaseModule.sol";

// When sniping NFTs, a lot of gas is lost when someone else's fill transaction
// gets included right before. To optimize the amount of gas that is lost, this
// module performs a balance/owner check so that we revert as early as possible
// and spend as few gas as possible.
contract BalanceAssertModule {
  // --- Errors ---

  error AssertFailed();

  // --- [ERC721] Single assert ---

  function assertERC721Owner(
    IERC721 token,
    uint256 tokenId,
    address owner
  ) external view {
    address actualOwner = token.ownerOf(tokenId);
    if (owner != actualOwner) {
      revert AssertFailed();
    }
  }

  // --- [ERC1155] Single assert ---

  function assertERC1155Balance(
    IERC1155 token,
    uint256 tokenId,
    address owner,
    uint256 balance
  ) external view {
    uint256 actualBalance = token.balanceOf(owner, tokenId);
    if (balance < actualBalance) {
      revert AssertFailed();
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {TwoStepOwnable} from "../../misc/TwoStepOwnable.sol";

// Notes:
// - includes common helpers useful for all modules

abstract contract BaseModule is TwoStepOwnable, ReentrancyGuard {
  using SafeERC20 for IERC20;

  // --- Events ---

  event CallExecuted(address target, bytes data, uint256 value);

  // --- Errors ---

  error UnsuccessfulCall();
  error UnsuccessfulPayment();
  error WrongParams();

  // --- Constructor ---

  constructor(address owner) TwoStepOwnable(owner) {}

  // --- Owner ---

  // To be able to recover anything that gets stucked by mistake in the module,
  // we allow the owner to perform any arbitrary call. Since the goal is to be
  // stateless, this should only happen in case of mistakes. In addition, this
  // method is also useful for withdrawing any earned trading rewards.
  function makeCalls(
    address[] calldata targets,
    bytes[] calldata data,
    uint256[] calldata values
  ) external payable onlyOwner nonReentrant {
    uint256 length = targets.length;
    for (uint256 i = 0; i < length; ) {
      _makeCall(targets[i], data[i], values[i]);
      emit CallExecuted(targets[i], data[i], values[i]);

      unchecked {
        ++i;
      }
    }
  }

  // --- Helpers ---

  function _sendETH(address to, uint256 amount) internal {
    if (amount > 0) {
      (bool success, ) = payable(to).call{value: amount}("");
      if (!success) {
        revert UnsuccessfulPayment();
      }
    }
  }

  function _sendERC20(
    address to,
    uint256 amount,
    IERC20 token
  ) internal {
    if (amount > 0) {
      token.safeTransfer(to, amount);
    }
  }

  function _makeCall(
    address target,
    bytes memory data,
    uint256 value
  ) internal {
    (bool success, ) = payable(target).call{value: value}(data);
    if (!success) {
      revert UnsuccessfulCall();
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISeaport} from "../../../interfaces/ISeaport.sol";

// Notes on the Seaport module:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract AlienswapModule is BaseExchangeModule {
  // --- Structs ---

  struct SeaportETHListingWithPrice {
    ISeaport.AdvancedOrder order;
    uint256 price;
  }

  // --- Fields ---

  ISeaport public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ISeaport(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ISeaport.AdvancedOrder calldata order,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        params.amount
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, params.amount);
  }

  // --- Single ERC20 listing ---

  function acceptERC20Listing(
    ISeaport.AdvancedOrder calldata order,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        0
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, 0);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    SeaportETHListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(
          orders[i].order,
          criteriaResolvers,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i].order, criteriaResolvers, params.fillTo, orders[i].price);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function acceptERC20Listings(
    ISeaport.AdvancedOrder[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Single ERC721 offer ---

  function acceptERC721Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC721 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC721 &&
      nftItem.itemType != ISeaport.ItemType.ERC721_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC721 nftToken = IERC721(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC721IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC721
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    // Pay fees
    if (nftToken.ownerOf(identifier) != address(this)) {
      // Only pay fees if the fill was successful
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, paymentToken);

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Single ERC1155 offer ---

  function acceptERC1155Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC1155 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC1155 &&
      nftItem.itemType != ISeaport.ItemType.ERC1155_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC1155 nftToken = IERC1155(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC1155IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC1155
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    uint256 balanceBefore = nftToken.balanceOf(address(this), identifier);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 balanceAfter = nftToken.balanceOf(address(this), identifier);

    // Pay fees
    uint256 amountFilled = balanceBefore - balanceAfter;
    if (amountFilled > 0) {
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(
          fee.recipient,
          // Only pay fees for the amount that was actually filled
          (fee.amount * amountFilled) / order.numerator,
          paymentToken
        );

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Generic handler (used for Seaport-based approvals) ---

  function matchOrders(
    ISeaport.Order[] calldata orders,
    ISeaport.Fulfillment[] calldata fulfillments
  ) external nonReentrant {
    // We don't perform any kind of input or return value validation,
    // so this function should be used with precaution - the official
    // way to use it is only for Seaport-based approvals
    EXCHANGE.matchOrders(orders, fulfillments);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  // NOTE: In lots of cases, Seaport will not revert if fills were not
  // fully executed. An example of that is partial filling, which will
  // successfully fill any amount that is still available (including a
  // zero amount). One way to ensure that we revert in case of partial
  // executions is to check the order's filled amount before and after
  // we trigger the fill (we can use Seaport's `getOrderStatus` method
  // to check). Since this can be expensive in terms of gas, we have a
  // separate method variant to be called when reverts are enabled.

  function _fillSingleOrder(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    {} catch {}
  }

  function _fillSingleOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Cache the order's hash
    bytes32 orderHash = _getOrderHash(order.parameters);

    // Before filling, get the order's filled amount
    uint256 beforeFilledAmount = _getFilledAmount(orderHash);

    // Execute the fill
    bool success;
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    returns (bool fulfilled) {
      success = fulfilled;
    } catch {
      revert UnsuccessfulFill();
    }

    if (!success) {
      revert UnsuccessfulFill();
    } else {
      // After successfully filling, get the order's filled amount
      uint256 afterFilledAmount = _getFilledAmount(orderHash);

      // Make sure the amount filled as part of this call is correct
      if (afterFilledAmount - beforeFilledAmount != order.numerator) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _getOrderHash(
    // Must use `memory` instead of `calldata` for the below cast
    ISeaport.OrderParameters memory orderParameters
  ) internal view returns (bytes32 orderHash) {
    // `OrderParameters` and `OrderComponents` share the exact same
    // fields, apart from the last one, so here we simply treat the
    // `orderParameters` argument as `OrderComponents` and then set
    // the last field to the correct data
    ISeaport.OrderComponents memory orderComponents;
    assembly {
      orderComponents := orderParameters
    }
    orderComponents.counter = EXCHANGE.getCounter(orderParameters.offerer);

    orderHash = EXCHANGE.getOrderHash(orderComponents);
  }

  function _getFilledAmount(bytes32 orderHash) internal view returns (uint256 totalFilled) {
    (, , totalFilled, ) = EXCHANGE.getOrderStatus(orderHash);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseModule} from "../BaseModule.sol";

// Notes:
// - includes common helpers useful for all marketplace/exchange modules

abstract contract BaseExchangeModule is BaseModule {
  using SafeERC20 for IERC20;

  // --- Structs ---

  // Every fill execution has the following parameters:
  // - `fillTo`: the recipient of the received items
  // - `refundTo`: the recipient of any refunds
  // - `revertIfIncomplete`: whether to revert or skip unsuccessful fills

  // The below `ETHListingParams` and `ERC20ListingParams` rely on the
  // off-chain execution encoder to ensure that the orders filled with
  // the passed in listing parameters exactly match (eg. order amounts
  // and payment tokens match).

  struct ETHListingParams {
    address fillTo;
    address refundTo;
    bool revertIfIncomplete;
    // The total amount of ETH to be provided when filling
    uint256 amount;
  }

  struct ERC20ListingParams {
    address fillTo;
    address refundTo;
    bool revertIfIncomplete;
    // The ERC20 payment token for the listings
    IERC20 token;
    // The total amount of `token` to be provided when filling
    uint256 amount;
  }

  struct OfferParams {
    address fillTo;
    address refundTo;
    bool revertIfIncomplete;
  }

  struct Fee {
    address recipient;
    uint256 amount;
  }

  // --- Fields ---

  address public immutable router;

  // --- Errors ---

  error UnsuccessfulFill();

  // --- Constructor ---

  constructor(address routerAddress) {
    router = routerAddress;
  }

  // --- Modifiers ---

  modifier refundETHLeftover(address refundTo) {
    _;

    uint256 leftover = address(this).balance;
    if (leftover > 0) {
      _sendETH(refundTo, leftover);
    }
  }

  modifier refundERC20Leftover(address refundTo, IERC20 token) {
    _;

    uint256 leftover = token.balanceOf(address(this));
    if (leftover > 0) {
      token.safeTransfer(refundTo, leftover);
    }
  }

  modifier chargeETHFees(Fee[] calldata fees, uint256 amount) {
    if (fees.length == 0) {
      _;
    } else {
      uint256 balanceBefore = address(this).balance;

      _;

      uint256 length = fees.length;
      if (length > 0) {
        uint256 balanceAfter = address(this).balance;
        uint256 actualPaid = balanceBefore - balanceAfter;

        uint256 actualFee;
        for (uint256 i = 0; i < length; ) {
          // Adjust the fee to what was actually paid
          actualFee = (fees[i].amount * actualPaid) / amount;
          if (actualFee > 0) {
            _sendETH(fees[i].recipient, actualFee);
          }

          unchecked {
            ++i;
          }
        }
      }
    }
  }

  modifier chargeERC20Fees(
    Fee[] calldata fees,
    IERC20 token,
    uint256 amount
  ) {
    if (fees.length == 0) {
      _;
    } else {
      uint256 balanceBefore = token.balanceOf(address(this));

      _;

      uint256 length = fees.length;
      if (length > 0) {
        uint256 balanceAfter = token.balanceOf(address(this));
        uint256 actualPaid = balanceBefore - balanceAfter;

        uint256 actualFee;
        for (uint256 i = 0; i < length; ) {
          // Adjust the fee to what was actually paid
          actualFee = (fees[i].amount * actualPaid) / amount;
          if (actualFee > 0) {
            token.safeTransfer(fees[i].recipient, actualFee);
          }

          unchecked {
            ++i;
          }
        }
      }
    }
  }

  // --- Helpers ---

  function _sendAllETH(address to) internal {
    _sendETH(to, address(this).balance);
  }

  function _sendAllERC20(address to, IERC20 token) internal {
    uint256 balance = token.balanceOf(address(this));
    if (balance > 0) {
      token.safeTransfer(to, balance);
    }
  }

  function _sendAllERC721(address to, IERC721 token, uint256 tokenId) internal {
    if (token.ownerOf(tokenId) == address(this)) {
      token.safeTransferFrom(address(this), to, tokenId);
    }
  }

  function _sendAllERC1155(address to, IERC1155 token, uint256 tokenId) internal {
    uint256 balance = token.balanceOf(address(this), tokenId);
    if (balance > 0) {
      token.safeTransferFrom(address(this), to, tokenId, balance, "");
    }
  }

  function _approveERC20IfNeeded(IERC20 token, address spender, uint256 amount) internal {
    uint256 allowance = token.allowance(address(this), spender);
    if (allowance < amount) {
      // Some contracts revert if trying to approve starting from a non-zero amount
      if (allowance > 0) {
        _approveERC20(address(token), spender, 0);
      }

      _approveERC20(address(token), spender, amount);
    }
  }

  function _approveERC721IfNeeded(IERC721 token, address operator) internal {
    bool isApproved = token.isApprovedForAll(address(this), operator);
    if (!isApproved) {
      token.setApprovalForAll(operator, true);
    }
  }

  function _approveERC1155IfNeeded(IERC1155 token, address operator) internal {
    bool isApproved = token.isApprovedForAll(address(this), operator);
    if (!isApproved) {
      token.setApprovalForAll(operator, true);
    }
  }

  function _approveERC20(address token, address spender, uint256 amount) internal {
    // To avoid extra calldata padding (which some contracts reject)
    (bool success, ) = token.call(
      abi.encodeWithSignature("approve(address,uint256)", spender, amount)
    );
    if (!success) {
      revert UnsuccessfulFill();
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ICaviarPoolV1} from "../../../interfaces/ICaviarV1.sol";

contract CaviarV1Module is BaseExchangeModule {
  // --- Constructor ---

  constructor(address owner, address router) BaseModule(owner) BaseExchangeModule(router) {}

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple ETH listings ---

  function buyWithETH(
    ICaviarPoolV1[] calldata pairs,
    uint256[] calldata nftIds,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256[] memory tokenIds = new uint256[](1);
    uint256 pairsLength = pairs.length;
    for (uint256 i; i < pairsLength; ) {
      // Fetch the current price
      uint256 inputAmount = pairs[i].buyQuote(1e18);
      uint256 tokenId = nftIds[i];
      tokenIds[0] = tokenId;

      // Execute fill
      try pairs[i].nftBuy{value: inputAmount}(tokenIds, inputAmount, 0) {
        _sendAllERC721(params.fillTo, IERC721(pairs[i].nft()), tokenId);
      } catch {
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- Single offer ---

  function sell(
    ICaviarPoolV1 pair,
    uint256 nftId,
    uint256 minOutput,
    ICaviarPoolV1.Message calldata stolenProof,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    address nft = pair.nft();

    // Approve the pair if needed
    _approveERC721IfNeeded(IERC721(nft), address(pair));

    // Build router data
    uint256[] memory tokenIds = new uint256[](1);
    bytes32[][] memory proofs = new bytes32[][](0);
    ICaviarPoolV1.Message[] memory stolenProofs = new ICaviarPoolV1.Message[](1);
    tokenIds[0] = nftId;
    stolenProofs[0] = stolenProof;

    // Execute fill
    try pair.nftSell(tokenIds, minOutput, 0, proofs, stolenProofs) {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendETH(fee.recipient, fee.amount);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllETH(params.fillTo);
    } catch {
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any leftovers
    _sendAllERC721(params.refundTo, IERC721(nft), nftId);
  }

  // --- ERC721/1155 hooks ---

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ICryptoPunksMarket} from "../../../interfaces/ICryptoPunksMarket.sol";

contract CryptoPunksModule is BaseExchangeModule {
  // --- Fields ---

  ICryptoPunksMarket public immutable MARKETPLACE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address marketplace
  ) BaseModule(owner) BaseExchangeModule(router) {
    MARKETPLACE = ICryptoPunksMarket(marketplace);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple buy Punks ---

  function batchBuyPunksWithETH(
    ICryptoPunksMarket.BuyOrder[] calldata buyOrders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = buyOrders.length;
    for (uint256 i = 0; i < length; ) {
      // Execute fill
      _buy(buyOrders[i], params.revertIfIncomplete);

      unchecked {
        ++i;
      }
    }
  }

  function _buy(ICryptoPunksMarket.BuyOrder calldata buyOrder, bool revertIfIncomplete) internal {
    try MARKETPLACE.buyPunk{value: buyOrder.price}(buyOrder.punkIndex) {
      // Transfer the punk to the receiver
      MARKETPLACE.transferPunk(buyOrder.buyer, buyOrder.punkIndex);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";

import {IDittoPool} from "../../../interfaces/IDittoPool.sol";

struct DittoOrderParams {
  address tokenSender;
  uint256[] nftIds;
  bytes swapData;
}

contract DittoModule is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Constructor ---

  constructor(address owner, address router) BaseModule(owner) BaseExchangeModule(router) {}

  // --- Helper methods ---

  function poolTransferNftFrom(IERC721 token, address from, address to, uint256 tokenId) external {
    token.transferFrom(from, to, tokenId);
  }

  function poolTransferErc20From(
    IERC20 token,
    address from,
    address to,
    uint256 amount
  ) external virtual {
    if (from == address(this)) {
      token.safeTransfer(to, amount);
    } else {
      token.safeTransferFrom(from, to, amount);
    }
  }

  // --- Multiple ERC20 listing ---

  function buyWithERC20(
    IDittoPool[] calldata pairs,
    DittoOrderParams[] calldata orderParams,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    uint256 pairsLength = pairs.length;
    for (uint256 i; i < pairsLength; ) {
      // Execute fill
      IDittoPool.SwapTokensForNftsArgs memory args = IDittoPool.SwapTokensForNftsArgs({
        nftIds: orderParams[i].nftIds,
        maxExpectedTokenInput: params.amount,
        tokenSender: orderParams[i].tokenSender,
        nftRecipient: params.fillTo,
        swapData: orderParams[i].swapData
      });

      pairs[i].swapTokensForNfts(args);

      unchecked {
        ++i;
      }
    }
  }

  // --- Single ERC721 offer ---

  function sell(
    IDittoPool pool,
    DittoOrderParams calldata orderParams,
    uint256[] calldata lpIds,
    bytes calldata permitterData,
    uint256 minOutput,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    IERC20 token = pool.token();

    IDittoPool.SwapNftsForTokensArgs memory args = IDittoPool.SwapNftsForTokensArgs({
      nftIds: orderParams.nftIds,
      lpIds: lpIds,
      minExpectedTokenOutput: minOutput,
      nftSender: orderParams.tokenSender,
      tokenRecipient: params.fillTo,
      permitterData: permitterData,
      swapData: orderParams.swapData
    });

    pool.swapNftsForTokens(args);

    // Pay fees
    uint256 feesLength = fees.length;
    for (uint256 i; i < feesLength; ) {
      Fee memory fee = fees[i];
      _sendERC20(fee.recipient, fee.amount, token);

      unchecked {
        ++i;
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IElement} from "../../../interfaces/IElement.sol";

// Notes:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract ElementModule is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Fields ---

  IElement public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IElement(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- [ERC721] Single ETH listing ---

  function acceptETHListingERC721(
    IElement.NFTSellOrder calldata order,
    IElement.Signature calldata signature,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC721Ex(order, signature, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC721] Single ERC20 listing ---

  function acceptERC20ListingERC721(
    IElement.NFTSellOrder calldata order,
    IElement.Signature calldata signature,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC721Ex(order, signature, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC721] Multiple ETH listings ---

  function acceptETHListingsERC721(
    IElement.NFTSellOrder[] calldata orders,
    IElement.Signature[] calldata signatures,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC721sEx(orders, signatures, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC721] Multiple ERC20 listings ---

  function acceptERC20ListingsERC721(
    IElement.NFTSellOrder[] calldata orders,
    IElement.Signature[] calldata signatures,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC721sEx(orders, signatures, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC721] Single ETH listing V2 ---

  function acceptETHListingERC721V2(
    IElement.BatchSignedOrder calldata order,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _fillBatchSignedOrder(order, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC721] Single ERC20 listing V2 ---

  function acceptERC20ListingERC721V2(
    IElement.BatchSignedOrder calldata order,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _fillBatchSignedOrder(order, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC721] Multiple ETH listings V2 ---

  function acceptETHListingsERC721V2(
    IElement.BatchSignedOrder[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _fillBatchSignedOrders(orders, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC721] Multiple ERC20 listings V2 ---

  function acceptERC20ListingsERC721V2(
    IElement.BatchSignedOrder[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _fillBatchSignedOrders(orders, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC1155] Single ETH listing ---

  function acceptETHListingERC1155(
    IElement.ERC1155SellOrder calldata order,
    IElement.Signature calldata signature,
    uint128 amount,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC1155Ex(
      order,
      signature,
      amount,
      params.fillTo,
      params.revertIfIncomplete,
      params.amount
    );
  }

  // --- [ERC1155] Single ERC20 listing ---

  function acceptERC20ListingERC1155(
    IElement.ERC1155SellOrder calldata order,
    IElement.Signature calldata signature,
    uint128 amount,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC1155Ex(order, signature, amount, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC1155] Multiple ETH listings ---

  function acceptETHListingsERC1155(
    IElement.ERC1155SellOrder[] calldata orders,
    IElement.Signature[] calldata signatures,
    uint128[] calldata amounts,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC1155sEx(
      orders,
      signatures,
      amounts,
      params.fillTo,
      params.revertIfIncomplete,
      params.amount
    );
  }

  // --- [ERC1155] Multiple ERC20 listings ---

  function acceptERC20ListingsERC1155(
    IElement.ERC1155SellOrder[] calldata orders,
    IElement.Signature[] calldata signatures,
    uint128[] calldata amounts,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC1155sEx(orders, signatures, amounts, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC721] Single offer ---

  function acceptERC721Offer(
    IElement.NFTBuyOrder calldata order,
    IElement.Signature calldata signature,
    OfferParams calldata params,
    uint256 tokenId,
    Fee[] calldata fees
  ) external nonReentrant {
    // Approve the exchange if needed
    _approveERC721IfNeeded(IERC721(order.nft), address(EXCHANGE));

    // Execute fill
    try EXCHANGE.sellERC721(order, signature, tokenId, false, "") {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, order.erc20Token);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(params.fillTo, order.erc20Token);
    } catch {
      // Revert if specified
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, IERC721(order.nft), tokenId);
  }

  // --- [ERC1155] Single offer ---

  function acceptERC1155Offer(
    IElement.ERC1155BuyOrder calldata order,
    IElement.Signature calldata signature,
    uint128 amount,
    OfferParams calldata params,
    uint256 tokenId,
    Fee[] calldata fees
  ) external nonReentrant {
    // Approve the exchange if needed
    _approveERC1155IfNeeded(IERC1155(order.erc1155Token), address(EXCHANGE));

    // Execute fill
    try EXCHANGE.sellERC1155(order, signature, tokenId, amount, false, "") {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, order.erc20Token);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(params.fillTo, order.erc20Token);
    } catch {
      // Revert if specified
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, IERC1155(order.erc1155Token), tokenId);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _buyERC721Ex(
    IElement.NFTSellOrder calldata order,
    IElement.Signature calldata signature,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute fill
    try EXCHANGE.buyERC721Ex{value: value}(order, signature, receiver, "") {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _buyERC721sEx(
    IElement.NFTSellOrder[] calldata orders,
    IElement.Signature[] calldata signatures,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    uint256 length = orders.length;

    address[] memory takers = new address[](length);
    for (uint256 i; i < length; ) {
      takers[i] = receiver;
      unchecked {
        ++i;
      }
    }

    // Execute fill
    try
      EXCHANGE.batchBuyERC721sEx{value: value}(
        orders,
        signatures,
        takers,
        new bytes[](length),
        revertIfIncomplete
      )
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _fillBatchSignedOrder(
    IElement.BatchSignedOrder calldata order,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    IElement.Parameter memory parameter;
    parameter.r = order.r;
    parameter.s = order.s;

    // data1 [56 bits(startNonce) + 8 bits(v) + 32 bits(listingTime) + 160 bits(maker)]
    parameter.data1 =
      (order.startNonce << 200) |
      (uint256(order.v) << 192) |
      (order.listingTime << 160) |
      uint256(uint160(order.maker));

    // data2 [64 bits(taker part1) + 32 bits(expiryTime) + 160 bits(erc20Token)]
    uint256 taker = uint256(uint160(receiver));
    parameter.data2 =
      ((taker >> 96) << 192) |
      (order.expirationTime << 160) |
      uint256(uint160(order.erc20Token));

    // data3 [96 bits(taker part2) + 160 bits(platformFeeRecipient)]
    parameter.data3 = (taker << 160) | uint256(uint160(order.platformFeeRecipient));

    // Execute fill
    try
      EXCHANGE.fillBatchSignedERC721Order{value: value}(parameter, order.collectionsBytes)
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _fillBatchSignedOrders(
    IElement.BatchSignedOrder[] calldata orders,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    uint256 length = orders.length;
    uint256 taker = uint256(uint160(receiver));

    IElement.Parameters[] memory parameters = new IElement.Parameters[](length);
    for (uint256 i; i < length; ) {
      IElement.BatchSignedOrder calldata order = orders[i];

      IElement.Parameters memory parameter;
      parameter.r = order.r;
      parameter.s = order.s;
      parameter.collections = order.collectionsBytes;

      // data1 [56 bits(startNonce) + 8 bits(v) + 32 bits(listingTime) + 160 bits(maker)]
      parameter.data1 =
        (order.startNonce << 200) |
        (uint256(order.v) << 192) |
        (order.listingTime << 160) |
        uint256(uint160(order.maker));

      // data2 [64 bits(taker part1) + 32 bits(expiryTime) + 160 bits(erc20Token)]
      parameter.data2 =
        ((taker >> 96) << 192) |
        (order.expirationTime << 160) |
        uint256(uint160(order.erc20Token));

      // data3 [96 bits(taker part2) + 160 bits(platformFeeRecipient)]
      parameter.data3 = (taker << 160) | uint256(uint160(order.platformFeeRecipient));

      parameters[i] = parameter;
      unchecked {
        ++i;
      }
    }

    // Execute fill
    uint256 additional2 = revertIfIncomplete ? (1 << 248) : 0;
    try EXCHANGE.fillBatchSignedERC721Orders{value: value}(parameters, 0, additional2) {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _buyERC1155Ex(
    IElement.ERC1155SellOrder calldata order,
    IElement.Signature calldata signature,
    uint128 amount,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    try EXCHANGE.buyERC1155Ex{value: value}(order, signature, receiver, amount, "") {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _buyERC1155sEx(
    IElement.ERC1155SellOrder[] calldata orders,
    IElement.Signature[] calldata signatures,
    uint128[] calldata amounts,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    uint256 length = orders.length;

    address[] memory takers = new address[](length);
    for (uint256 i; i < length; ) {
      takers[i] = receiver;
      unchecked {
        ++i;
      }
    }

    // Execute fill
    try
      EXCHANGE.batchBuyERC1155sEx{value: value}(
        orders,
        signatures,
        takers,
        amounts,
        new bytes[](length),
        revertIfIncomplete
      )
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IFoundation} from "../../../interfaces/IFoundation.sol";

// Notes:
// - only supports filling "buy now" listings (ERC721 and ETH-denominated)

contract FoundationModule is BaseExchangeModule {
  // --- Structs ---

  struct Listing {
    IERC721 token;
    uint256 tokenId;
    uint256 price;
  }

  // --- Fields ---

  IFoundation public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IFoundation(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    Listing calldata listing,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(listing.token, listing.tokenId, params.fillTo, params.revertIfIncomplete, listing.price);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    Listing[] calldata listings,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Foundation does not support batch filling so we fill orders one by one
    for (uint256 i = 0; i < listings.length; ) {
      _buy(
        listings[i].token,
        listings[i].tokenId,
        params.fillTo,
        params.revertIfIncomplete,
        listings[i].price
      );

      unchecked {
        ++i;
      }
    }
  }

  // --- ERC721 hooks ---

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata // data
  ) external pure returns (bytes4) {
    return this.onERC721Received.selector;
  }

  // --- Internal ---

  function _buy(
    IERC721 token,
    uint256 tokenId,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute fill
    try EXCHANGE.buyV2{value: value}(token, tokenId, value, receiver) {
      token.safeTransferFrom(address(this), receiver, tokenId);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ILooksRare, ILooksRareTransferSelectorNFT} from "../../../interfaces/ILooksRare.sol";

// Notes:
// - supports filling listings (both ERC721/ERC1155 but only ETH-denominated)
// - supports filling offers (both ERC721/ERC1155)

contract LooksRareModule is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Fields ---

  ILooksRare public immutable EXCHANGE;

  address public immutable ERC721_TRANSFER_MANAGER;
  address public immutable ERC1155_TRANSFER_MANAGER;

  bytes4 public constant ERC721_INTERFACE = 0x80ac58cd;
  bytes4 public constant ERC1155_INTERFACE = 0xd9b67a26;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ILooksRare(exchange);

    ILooksRareTransferSelectorNFT transferSelector = EXCHANGE.transferSelectorNFT();
    ERC721_TRANSFER_MANAGER = transferSelector.TRANSFER_MANAGER_ERC721();
    ERC1155_TRANSFER_MANAGER = transferSelector.TRANSFER_MANAGER_ERC1155();
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ILooksRare.TakerOrder calldata takerBid,
    ILooksRare.MakerOrder calldata makerAsk,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(takerBid, makerAsk, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    ILooksRare.TakerOrder[] calldata takerBids,
    ILooksRare.MakerOrder[] calldata makerAsks,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // LooksRare does not support batch filling so we fill orders one by one
    for (uint256 i = 0; i < takerBids.length; ) {
      // Use `memory` to avoid `Stack too deep` errors
      ILooksRare.TakerOrder memory takerBid = takerBids[i];

      // Execute fill
      _buy(takerBids[i], makerAsks[i], params.fillTo, params.revertIfIncomplete, takerBid.price);

      unchecked {
        ++i;
      }
    }
  }

  // --- [ERC721] Single offer ---

  function acceptERC721Offer(
    ILooksRare.TakerOrder calldata takerAsk,
    ILooksRare.MakerOrder calldata makerBid,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    IERC721 collection = IERC721(address(makerBid.collection));

    // Approve the transfer manager if needed
    _approveERC721IfNeeded(collection, ERC721_TRANSFER_MANAGER);

    // Execute the fill
    _sell(takerAsk, makerBid, params.fillTo, params.revertIfIncomplete, fees);

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, collection, takerAsk.tokenId);
  }

  // --- [ERC1155] Single offer ---

  function acceptERC1155Offer(
    ILooksRare.TakerOrder calldata takerAsk,
    ILooksRare.MakerOrder calldata makerBid,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    IERC1155 collection = IERC1155(address(makerBid.collection));

    // Approve the transfer manager if needed
    _approveERC1155IfNeeded(collection, ERC1155_TRANSFER_MANAGER);

    // Execute the fill
    _sell(takerAsk, makerBid, params.fillTo, params.revertIfIncomplete, fees);

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, collection, takerAsk.tokenId);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _buy(
    ILooksRare.TakerOrder calldata takerBid,
    ILooksRare.MakerOrder calldata makerAsk,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute the fill
    try EXCHANGE.matchAskWithTakerBidUsingETHAndWETH{value: value}(takerBid, makerAsk) {
      IERC165 collection = makerAsk.collection;

      // Forward any token to the specified receiver
      bool isERC721 = collection.supportsInterface(ERC721_INTERFACE);
      if (isERC721) {
        IERC721(address(collection)).safeTransferFrom(address(this), receiver, takerBid.tokenId);
      } else {
        bool isERC1155 = collection.supportsInterface(ERC1155_INTERFACE);
        if (isERC1155) {
          IERC1155(address(collection)).safeTransferFrom(
            address(this),
            receiver,
            takerBid.tokenId,
            makerAsk.amount,
            ""
          );
        }
      }
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _sell(
    ILooksRare.TakerOrder calldata takerAsk,
    ILooksRare.MakerOrder calldata makerBid,
    address receiver,
    bool revertIfIncomplete,
    Fee[] calldata fees
  ) internal {
    // Execute the fill
    try EXCHANGE.matchBidWithTakerAsk(takerAsk, makerBid) {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, makerBid.currency);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(receiver, makerBid.currency);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ILooksRareV2, ITransferManager} from "../../../interfaces/ILooksRareV2.sol";

// Notes:
// - supports filling listings (both ERC721/ERC1155 but only ETH-denominated)
// - supports filling offers (both ERC721/ERC1155)

contract LooksRareV2Module is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Fields ---

  ILooksRareV2 public immutable EXCHANGE;

  ITransferManager public immutable TRANSFER_MANAGER;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ILooksRareV2(exchange);
    TRANSFER_MANAGER = EXCHANGE.transferManager();

    // Grant approval to the transfer manager
    address[] memory operators = new address[](1);
    operators[0] = address(EXCHANGE);
    TRANSFER_MANAGER.grantApprovals(operators);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ILooksRareV2.MakerOrder calldata makerAsk,
    bytes calldata makerSignature,
    ILooksRareV2.MerkleTree calldata merkleTree,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(
      makerAsk,
      makerSignature,
      merkleTree,
      params.fillTo,
      params.revertIfIncomplete,
      params.amount
    );
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    ILooksRareV2.MakerOrder[] calldata makerAsks,
    bytes[] calldata makerSignatures,
    ILooksRareV2.MerkleTree[] calldata merkleTrees,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // LooksRare does not support batch filling so we fill orders one by one
    for (uint256 i = 0; i < makerAsks.length; ) {
      // Execute fill
      _buy(
        makerAsks[i],
        makerSignatures[i],
        merkleTrees[i],
        params.fillTo,
        params.revertIfIncomplete,
        makerAsks[i].price
      );

      unchecked {
        ++i;
      }
    }
  }

  // --- [ERC721] Single offer ---

  function acceptERC721Offer(
    ILooksRareV2.MakerOrder calldata makerBid,
    bytes calldata takerAdditionalParameters,
    bytes calldata makerSignature,
    ILooksRareV2.MerkleTree calldata merkleTree,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    IERC721 collection = IERC721(address(makerBid.collection));

    // Approve the transfer manager if needed
    _approveERC721IfNeeded(collection, address(TRANSFER_MANAGER));

    // Execute the fill
    uint256 tokenId = _sell(
      makerBid,
      takerAdditionalParameters,
      makerSignature,
      merkleTree,
      params.fillTo,
      params.revertIfIncomplete,
      fees
    );

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, collection, tokenId);
  }

  // --- [ERC1155] Single offer ---

  function acceptERC1155Offer(
    ILooksRareV2.MakerOrder calldata makerBid,
    bytes calldata takerAdditionalParameters,
    bytes calldata makerSignature,
    ILooksRareV2.MerkleTree calldata merkleTree,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    IERC1155 collection = IERC1155(address(makerBid.collection));

    // Approve the transfer manager if needed
    _approveERC1155IfNeeded(collection, address(TRANSFER_MANAGER));

    // Execute the fill
    uint256 tokenId = _sell(
      makerBid,
      takerAdditionalParameters,
      makerSignature,
      merkleTree,
      params.fillTo,
      params.revertIfIncomplete,
      fees
    );

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, collection, tokenId);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _buy(
    ILooksRareV2.MakerOrder calldata makerAsk,
    bytes calldata makerSignature,
    ILooksRareV2.MerkleTree calldata merkleTree,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    ILooksRareV2.TakerOrder memory takerBid;
    takerBid.recipient = receiver;

    // Execute the fill
    try
      EXCHANGE.executeTakerBid{value: value}(
        takerBid,
        makerAsk,
        makerSignature,
        merkleTree,
        address(0)
      )
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _sell(
    ILooksRareV2.MakerOrder calldata makerBid,
    bytes calldata takerAdditionalParameters,
    bytes calldata makerSignature,
    ILooksRareV2.MerkleTree calldata merkleTree,
    address receiver,
    bool revertIfIncomplete,
    Fee[] calldata fees
  ) internal returns (uint256 tokenId) {
    ILooksRareV2.TakerOrder memory takerAsk;
    takerAsk.recipient = address(this);
    takerAsk.additionalParameters = takerAdditionalParameters;

    // Execute the fill
    try EXCHANGE.executeTakerAsk(takerAsk, makerBid, makerSignature, merkleTree, address(0)) {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, makerBid.currency);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(receiver, makerBid.currency);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    tokenId = abi.decode(takerAdditionalParameters[0:32], (uint256));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";

import {INFTXMarketplaceZap} from "../../../interfaces/INFTX.sol";
import {INFTXVault} from "../../../interfaces/INFTXVault.sol";
import {INFTXVaultFactory} from "../../../interfaces/INFTXVaultFactory.sol";

contract NFTXModule is BaseExchangeModule {
  // --- Fields ---

  INFTXMarketplaceZap public immutable NFTX_MARKETPLACE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address nftxMarketplace
  ) BaseModule(owner) BaseExchangeModule(router) {
    NFTX_MARKETPLACE = INFTXMarketplaceZap(nftxMarketplace);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple ETH listings ---

  function buyWithETH(
    INFTXMarketplaceZap.BuyOrder[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    for (uint256 i = 0; i < length; ) {
      INFTXMarketplaceZap.BuyOrder memory order = orders[i];
      // Execute fill
      _buy(orders[i], params.fillTo, params.revertIfIncomplete, order.price);

      unchecked {
        ++i;
      }
    }
  }

  // --- Internal ---

  function _buy(
    INFTXMarketplaceZap.BuyOrder calldata buyOrder,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute the fill
    try
      NFTX_MARKETPLACE.buyAndRedeem{value: value}(
        buyOrder.vaultId,
        buyOrder.amount,
        buyOrder.specificIds,
        buyOrder.path,
        receiver
      )
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  // --- Single ERC721 offer ---

  function sell(
    INFTXMarketplaceZap.SellOrder[] calldata orders,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    uint256 length = orders.length;
    for (uint256 i = 0; i < length; ) {
      // Execute fill
      _sell(orders[i], params.fillTo, params.revertIfIncomplete, fees);

      unchecked {
        ++i;
      }
    }
  }

  function _sell(
    INFTXMarketplaceZap.SellOrder calldata sellOrder,
    address receiver,
    bool revertIfIncomplete,
    Fee[] calldata fees
  ) internal {
    address collection = sellOrder.collection;

    INFTXVault vault = INFTXVault(NFTX_MARKETPLACE.nftxFactory().vault(sellOrder.vaultId));

    // Execute the sell
    if (!vault.is1155()) {
      _approveERC721IfNeeded(IERC721(collection), address(NFTX_MARKETPLACE));

      try
        NFTX_MARKETPLACE.mintAndSell721WETH(
          sellOrder.vaultId,
          sellOrder.specificIds,
          sellOrder.price,
          sellOrder.path,
          address(this)
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 i; i < feesLength; ) {
          Fee memory fee = fees[i];
          _sendERC20(fee.recipient, fee.amount, sellOrder.currency);
          unchecked {
            ++i;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllERC20(receiver, sellOrder.currency);
      } catch {
        // Revert if specified
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      // Refund any ERC721 leftover
      uint256 length = sellOrder.specificIds.length;
      for (uint256 i = 0; i < length; ) {
        _sendAllERC721(receiver, IERC721(collection), sellOrder.specificIds[i]);

        unchecked {
          ++i;
        }
      }
    } else {
      _approveERC1155IfNeeded(IERC1155(collection), address(NFTX_MARKETPLACE));

      try
        NFTX_MARKETPLACE.mintAndSell1155WETH(
          sellOrder.vaultId,
          sellOrder.specificIds,
          sellOrder.amounts,
          sellOrder.price,
          sellOrder.path,
          address(this)
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 i; i < feesLength; ) {
          Fee memory fee = fees[i];
          _sendERC20(fee.recipient, fee.amount, sellOrder.currency);
          unchecked {
            ++i;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllERC20(receiver, sellOrder.currency);
      } catch {
        // Revert if specified
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      // Refund any ERC1155 leftover
      uint256 length = sellOrder.specificIds.length;
      for (uint256 i = 0; i < length; ) {
        _sendAllERC1155(receiver, IERC1155(collection), sellOrder.specificIds[i]);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";

import {INFTXV3MarketplaceZap} from "../../../interfaces/INFTXV3MarketplaceZap.sol";
import {INFTXVault} from "../../../interfaces/INFTXVault.sol";
import {INFTXVaultFactory} from "../../../interfaces/INFTXVaultFactory.sol";

contract NFTXV3Module is BaseExchangeModule {
  // --- Fields ---

  INFTXV3MarketplaceZap public immutable NFTX_V3_MARKETPLACE;

  bytes4 public constant ERC721_INTERFACE = 0x80ac58cd;
  bytes4 public constant ERC1155_INTERFACE = 0xd9b67a26;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address nftxMarketplace
  ) BaseModule(owner) BaseExchangeModule(router) {
    NFTX_V3_MARKETPLACE = INFTXV3MarketplaceZap(nftxMarketplace);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple ETH listings ---

  function buyWithETH(
    INFTXV3MarketplaceZap.BuyOrder[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    for (uint256 i = 0; i < length; ) {
      INFTXV3MarketplaceZap.BuyOrder memory order = orders[i];

      // Execute fill
      _buy(orders[i], params.fillTo, params.revertIfIncomplete, order.price);

      unchecked {
        ++i;
      }
    }
  }

  // --- Internal ---

  function _buy(
    INFTXV3MarketplaceZap.BuyOrder calldata buyOrder,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute the fill
    try
      NFTX_V3_MARKETPLACE.buyNFTsWithETH{value: value}(
        buyOrder.vaultId,
        buyOrder.idsOut,
        buyOrder.executeCallData,
        payable(receiver),
        buyOrder.vTokenPremiumLimit,
        buyOrder.deductRoyalty
      )
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  // --- Single ERC721 offer ---

  function sell(
    INFTXV3MarketplaceZap.SellOrder[] calldata orders,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    uint256 length = orders.length;
    for (uint256 i = 0; i < length; ) {
      // Execute fill
      _sell(orders[i], params.fillTo, params.revertIfIncomplete, fees);

      unchecked {
        ++i;
      }
    }
  }

  function _sell(
    INFTXV3MarketplaceZap.SellOrder calldata sellOrder,
    address receiver,
    bool revertIfIncomplete,
    Fee[] calldata fees
  ) internal {
    address collection = sellOrder.collection;

    INFTXVault vault = INFTXVault(NFTX_V3_MARKETPLACE.nftxVaultFactory().vault(sellOrder.vaultId));

    // Execute the sell
    if (!vault.is1155()) {
      _approveERC721IfNeeded(IERC721(collection), address(NFTX_V3_MARKETPLACE));

      // Return ETH
      try
        NFTX_V3_MARKETPLACE.sell721(
          sellOrder.vaultId,
          sellOrder.idsIn,
          sellOrder.executeCallData,
          payable(address(this)),
          sellOrder.deductRoyalty
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 i; i < feesLength; ) {
          Fee memory fee = fees[i];
          _sendETH(fee.recipient, fee.amount);

          unchecked {
            ++i;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllETH(receiver);
      } catch {
        // Revert if specified
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      // Refund any ERC721 leftover
      uint256 length = sellOrder.idsIn.length;
      for (uint256 i = 0; i < length; ) {
        _sendAllERC721(receiver, IERC721(collection), sellOrder.idsIn[i]);

        unchecked {
          ++i;
        }
      }
    } else {
      _approveERC1155IfNeeded(IERC1155(collection), address(NFTX_V3_MARKETPLACE));

      try
        NFTX_V3_MARKETPLACE.sell1155(
          sellOrder.vaultId,
          sellOrder.idsIn,
          sellOrder.amounts,
          sellOrder.executeCallData,
          payable(address(this)),
          sellOrder.deductRoyalty
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 i; i < feesLength; ) {
          Fee memory fee = fees[i];
          _sendETH(fee.recipient, fee.amount);
          unchecked {
            ++i;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllETH(receiver);
      } catch {
        // Revert if specified
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      // Refund any ERC1155 leftover
      uint256 length = sellOrder.idsIn.length;
      for (uint256 i = 0; i < length; ) {
        _sendAllERC1155(receiver, IERC1155(collection), sellOrder.idsIn[i]);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";

import {INFTXMarketplace0xZap} from "../../../interfaces/INFTXMarketplace0xZap.sol";
import {INFTXVault} from "../../../interfaces/INFTXVault.sol";
import {INFTXVaultFactory} from "../../../interfaces/INFTXVaultFactory.sol";

contract NFTXZeroExModule is BaseExchangeModule {
  // --- Fields ---

  INFTXMarketplace0xZap public immutable NFTX_ZEROEX_MARKETPLACE;

  bytes4 public constant ERC721_INTERFACE = 0x80ac58cd;
  bytes4 public constant ERC1155_INTERFACE = 0xd9b67a26;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address nftxMarketplace
  ) BaseModule(owner) BaseExchangeModule(router) {
    NFTX_ZEROEX_MARKETPLACE = INFTXMarketplace0xZap(nftxMarketplace);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple ETH listings ---

  function buyWithETH(
    INFTXMarketplace0xZap.BuyOrder[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    for (uint256 i = 0; i < length; ) {
      INFTXMarketplace0xZap.BuyOrder memory order = orders[i];

      // Execute fill
      _buy(orders[i], params.fillTo, params.revertIfIncomplete, order.price);

      unchecked {
        ++i;
      }
    }
  }

  // --- Internal ---

  function _buy(
    INFTXMarketplace0xZap.BuyOrder calldata buyOrder,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute the fill
    try
      NFTX_ZEROEX_MARKETPLACE.buyAndRedeem{value: value}(
        buyOrder.vaultId,
        buyOrder.amount,
        buyOrder.specificIds,
        buyOrder.swapCallData,
        payable(receiver)
      )
    {} catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  // --- Single ERC721 offer ---

  function sell(
    INFTXMarketplace0xZap.SellOrder[] calldata orders,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    uint256 length = orders.length;
    for (uint256 i = 0; i < length; ) {
      // Execute fill
      _sell(orders[i], params.fillTo, params.revertIfIncomplete, fees);

      unchecked {
        ++i;
      }
    }
  }

  function _sell(
    INFTXMarketplace0xZap.SellOrder calldata sellOrder,
    address receiver,
    bool revertIfIncomplete,
    Fee[] calldata fees
  ) internal {
    address collection = sellOrder.collection;

    INFTXVault vault = INFTXVault(NFTX_ZEROEX_MARKETPLACE.nftxFactory().vault(sellOrder.vaultId));

    // Execute the sell
    if (!vault.is1155()) {
      _approveERC721IfNeeded(IERC721(collection), address(NFTX_ZEROEX_MARKETPLACE));

      // Return ETH
      try
        NFTX_ZEROEX_MARKETPLACE.mintAndSell721(
          sellOrder.vaultId,
          sellOrder.specificIds,
          sellOrder.swapCallData,
          payable(address(this))
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 i; i < feesLength; ) {
          Fee memory fee = fees[i];
          _sendETH(fee.recipient, fee.amount);

          unchecked {
            ++i;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllETH(receiver);
      } catch {
        // Revert if specified
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      // Refund any ERC721 leftover
      uint256 length = sellOrder.specificIds.length;
      for (uint256 i = 0; i < length; ) {
        _sendAllERC721(receiver, IERC721(collection), sellOrder.specificIds[i]);

        unchecked {
          ++i;
        }
      }
    } else {
      _approveERC1155IfNeeded(IERC1155(collection), address(NFTX_ZEROEX_MARKETPLACE));

      try
        NFTX_ZEROEX_MARKETPLACE.mintAndSell1155(
          sellOrder.vaultId,
          sellOrder.specificIds,
          sellOrder.amounts,
          sellOrder.swapCallData,
          payable(address(this))
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 i; i < feesLength; ) {
          Fee memory fee = fees[i];
          _sendETH(fee.recipient, fee.amount);
          unchecked {
            ++i;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllETH(receiver);
      } catch {
        // Revert if specified
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      // Refund any ERC1155 leftover
      uint256 length = sellOrder.specificIds.length;
      for (uint256 i = 0; i < length; ) {
        _sendAllERC1155(receiver, IERC1155(collection), sellOrder.specificIds[i]);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";

import {IPaymentProcessor} from "../../../interfaces/IPaymentProcessor.sol";

// Notes:
// - supports filling listings (both ETH and ERC20)
// - supports filling offers

contract PaymentProcessorModule is BaseExchangeModule {
  // --- Fields ---

  IPaymentProcessor public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IPaymentProcessor(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListings(
    IPaymentProcessor.MatchedOrder[] memory saleDetails,
    IPaymentProcessor.SignatureECDSA[] memory signedListings,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = saleDetails.length;
    for (uint256 i; i < length; ) {
      // Execute the fill
      try
        EXCHANGE.buySingleListing{value: saleDetails[i].offerPrice}(
          saleDetails[i],
          signedListings[i],
          IPaymentProcessor.SignatureECDSA({v: 0, r: bytes32(0), s: bytes32(0)})
        )
      {
        // Forward any token to the specified receiver
        if (saleDetails[i].protocol == IPaymentProcessor.TokenProtocols.ERC721) {
          IERC721(saleDetails[i].tokenAddress).safeTransferFrom(
            address(this),
            params.fillTo,
            saleDetails[i].tokenId
          );
        } else {
          IERC1155(saleDetails[i].tokenAddress).safeTransferFrom(
            address(this),
            params.fillTo,
            saleDetails[i].tokenId,
            saleDetails[i].amount,
            ""
          );
        }
      } catch {
        // Revert if specified
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  function acceptERC20Listings(
    IPaymentProcessor.MatchedOrder[] memory saleDetails,
    IPaymentProcessor.SignatureECDSA[] memory signedListings,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = saleDetails.length;
    for (uint256 i; i < length; ) {
      // Execute the fill
      try
        EXCHANGE.buySingleListing(
          saleDetails[i],
          signedListings[i],
          IPaymentProcessor.SignatureECDSA({v: 0, r: bytes32(0), s: bytes32(0)})
        )
      {
        // Forward any token to the specified receiver
        if (saleDetails[i].protocol == IPaymentProcessor.TokenProtocols.ERC721) {
          IERC721(saleDetails[i].tokenAddress).safeTransferFrom(
            address(this),
            params.fillTo,
            saleDetails[i].tokenId
          );
        } else {
          IERC1155(saleDetails[i].tokenAddress).safeTransferFrom(
            address(this),
            params.fillTo,
            saleDetails[i].tokenId,
            saleDetails[i].amount,
            ""
          );
        }
      } catch {
        // Revert if specified
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  function acceptOffers(
    IPaymentProcessor.MatchedOrder[] memory saleDetails,
    IPaymentProcessor.SignatureECDSA[] memory signedOffers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    uint256 length = saleDetails.length;
    for (uint256 i; i < length; ) {
      // Approve the exchange if needed
      if (saleDetails[i].protocol == IPaymentProcessor.TokenProtocols.ERC721) {
        _approveERC721IfNeeded(IERC721(saleDetails[i].tokenAddress), address(EXCHANGE));
      } else {
        _approveERC1155IfNeeded(IERC1155(saleDetails[i].tokenAddress), address(EXCHANGE));
      }

      // Execute the fill
      try
        EXCHANGE.buySingleListing(
          saleDetails[i],
          IPaymentProcessor.SignatureECDSA({v: 0, r: bytes32(0), s: bytes32(0)}),
          signedOffers[i]
        )
      {
        // Pay fees
        uint256 feesLength = fees.length;
        for (uint256 j; j < feesLength; ) {
          Fee memory fee = fees[j];
          _sendERC20(fee.recipient, fee.amount, IERC20(saleDetails[i].paymentCoin));

          unchecked {
            ++j;
          }
        }

        // Forward any left payment to the specified receiver
        _sendAllERC20(params.fillTo, IERC20(saleDetails[i].paymentCoin));
      } catch {
        // Revert if specified
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- ERC1271 ---

  function isValidSignature(bytes32, bytes memory) external pure returns (bytes4) {
    return this.isValidSignature.selector;
  }

  // --- ERC721 / ERC1155 hooks ---

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IRarible} from "../../../interfaces/IRarible.sol";

// Notes:
// - supports filling listings (both ERC721/ERC1155 but only ETH-denominated)
// - supports filling offers (both ERC721/ERC1155)

contract RaribleModule is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Fields ---

  IRarible public immutable EXCHANGE;

  address public immutable TRANSFER_MANAGER;

  bytes4 public constant ERC721_INTERFACE = 0x80ac58cd;
  bytes4 public constant ERC1155_INTERFACE = 0xd9b67a26;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange,
    address transferManager
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IRarible(exchange);
    TRANSFER_MANAGER = transferManager;
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    IRarible.Order calldata orderLeft,
    bytes calldata signatureLeft,
    IRarible.Order calldata orderRight,
    bytes calldata signatureRight,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(
      orderLeft,
      signatureLeft,
      orderRight,
      signatureRight,
      params.fillTo,
      params.revertIfIncomplete,
      params.amount
    );
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    IRarible.Order[] calldata ordersLeft,
    bytes[] calldata signaturesLeft,
    IRarible.Order[] calldata ordersRight,
    bytes calldata signatureRight,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    for (uint256 i = 0; i < ordersLeft.length; ) {
      IRarible.Order calldata orderLeft = ordersLeft[i];
      IRarible.Order calldata orderRight = ordersRight[i];

      // Execute fill
      _buy(
        orderLeft,
        signaturesLeft[i],
        orderRight,
        signatureRight,
        params.fillTo,
        params.revertIfIncomplete,
        orderLeft.takeAsset.value
      );

      unchecked {
        ++i;
      }
    }
  }

  // --- [ERC721] Single offer ---

  function acceptERC721Offer(
    IRarible.Order calldata orderLeft,
    bytes calldata signatureLeft,
    IRarible.Order calldata orderRight,
    bytes calldata signatureRight,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    (address token, uint256 tokenId) = abi.decode(
      orderRight.makeAsset.assetType.data,
      (address, uint256)
    );

    IERC721 collection = IERC721(address(token));

    // Approve the transfer manager if needed
    _approveERC721IfNeeded(collection, TRANSFER_MANAGER);

    // Execute the fill
    _sell(
      orderLeft,
      signatureLeft,
      orderRight,
      signatureRight,
      params.fillTo,
      params.revertIfIncomplete,
      fees
    );

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, collection, tokenId);
  }

  // --- [ERC1155] Single offer ---

  function acceptERC1155Offer(
    IRarible.Order calldata orderLeft,
    bytes calldata signatureLeft,
    IRarible.Order calldata orderRight,
    bytes calldata signatureRight,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    (address token, uint256 tokenId) = abi.decode(
      orderRight.makeAsset.assetType.data,
      (address, uint256)
    );

    IERC1155 collection = IERC1155(address(token));

    // Approve the transfer manager if needed
    _approveERC1155IfNeeded(collection, TRANSFER_MANAGER);

    // Execute the fill
    _sell(
      orderLeft,
      signatureLeft,
      orderRight,
      signatureRight,
      params.fillTo,
      params.revertIfIncomplete,
      fees
    );

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, collection, tokenId);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _buy(
    IRarible.Order calldata orderLeft,
    bytes calldata signatureLeft,
    IRarible.Order calldata orderRight,
    bytes calldata signatureRight,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute the fill
    try EXCHANGE.matchOrders{value: value}(orderLeft, signatureLeft, orderRight, signatureRight) {
      (address token, uint256 tokenId) = abi.decode(
        orderLeft.makeAsset.assetType.data,
        (address, uint256)
      );
      IERC165 collection = IERC165(token);

      // Forward any token to the specified receiver
      bool isERC721 = collection.supportsInterface(ERC721_INTERFACE);
      if (isERC721) {
        IERC721(address(collection)).safeTransferFrom(address(this), receiver, tokenId);
      } else {
        IERC1155(address(collection)).safeTransferFrom(
          address(this),
          receiver,
          tokenId,
          orderRight.takeAsset.value,
          ""
        );
      }
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _sell(
    IRarible.Order calldata orderLeft,
    bytes calldata signatureLeft,
    IRarible.Order calldata orderRight,
    bytes calldata signatureRight,
    address receiver,
    bool revertIfIncomplete,
    Fee[] calldata fees
  ) internal {
    // Execute the fill
    try EXCHANGE.matchOrders(orderLeft, signatureLeft, orderRight, signatureRight) {
      // Pay fees
      address token = abi.decode(orderLeft.makeAsset.assetType.data, (address));
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];

        _sendERC20(fee.recipient, fee.amount, IERC20(token));

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(receiver, IERC20(token));
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISeaport} from "../../../interfaces/ISeaport.sol";

// Notes on the Seaport module:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract SeaportModule is BaseExchangeModule {
  // --- Structs ---

  struct SeaportETHListingWithPrice {
    ISeaport.AdvancedOrder order;
    uint256 price;
  }

  // --- Fields ---

  ISeaport public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ISeaport(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ISeaport.AdvancedOrder calldata order,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        params.amount
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, params.amount);
  }

  // --- Single ERC20 listing ---

  function acceptERC20Listing(
    ISeaport.AdvancedOrder calldata order,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        0
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, 0);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    SeaportETHListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(
          orders[i].order,
          criteriaResolvers,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i].order, criteriaResolvers, params.fillTo, orders[i].price);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function acceptERC20Listings(
    ISeaport.AdvancedOrder[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Single ERC721 offer ---

  function acceptERC721Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC721 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC721 &&
      nftItem.itemType != ISeaport.ItemType.ERC721_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC721 nftToken = IERC721(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC721IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC721
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    // Pay fees
    if (nftToken.ownerOf(identifier) != address(this)) {
      // Only pay fees if the fill was successful
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, paymentToken);

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Single ERC1155 offer ---

  function acceptERC1155Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC1155 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC1155 &&
      nftItem.itemType != ISeaport.ItemType.ERC1155_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC1155 nftToken = IERC1155(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC1155IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC1155
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    uint256 balanceBefore = nftToken.balanceOf(address(this), identifier);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 balanceAfter = nftToken.balanceOf(address(this), identifier);

    // Pay fees
    uint256 amountFilled = balanceBefore - balanceAfter;
    if (amountFilled > 0) {
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(
          fee.recipient,
          // Only pay fees for the amount that was actually filled
          (fee.amount * amountFilled) / order.numerator,
          paymentToken
        );

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Generic handler (used for Seaport-based approvals) ---

  function matchOrders(
    ISeaport.Order[] calldata orders,
    ISeaport.Fulfillment[] calldata fulfillments
  ) external nonReentrant {
    // We don't perform any kind of input or return value validation,
    // so this function should be used with precaution - the official
    // way to use it is only for Seaport-based approvals
    EXCHANGE.matchOrders(orders, fulfillments);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  // NOTE: In lots of cases, Seaport will not revert if fills were not
  // fully executed. An example of that is partial filling, which will
  // successfully fill any amount that is still available (including a
  // zero amount). One way to ensure that we revert in case of partial
  // executions is to check the order's filled amount before and after
  // we trigger the fill (we can use Seaport's `getOrderStatus` method
  // to check). Since this can be expensive in terms of gas, we have a
  // separate method variant to be called when reverts are enabled.

  function _fillSingleOrder(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    {} catch {}
  }

  function _fillSingleOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Cache the order's hash
    bytes32 orderHash = _getOrderHash(order.parameters);

    // Before filling, get the order's filled amount
    uint256 beforeFilledAmount = _getFilledAmount(orderHash);

    // Execute the fill
    bool success;
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    returns (bool fulfilled) {
      success = fulfilled;
    } catch {
      revert UnsuccessfulFill();
    }

    if (!success) {
      revert UnsuccessfulFill();
    } else {
      // After successfully filling, get the order's filled amount
      uint256 afterFilledAmount = _getFilledAmount(orderHash);

      // Make sure the amount filled as part of this call is correct
      if (afterFilledAmount - beforeFilledAmount != order.numerator) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _getOrderHash(
    // Must use `memory` instead of `calldata` for the below cast
    ISeaport.OrderParameters memory orderParameters
  ) internal view returns (bytes32 orderHash) {
    // `OrderParameters` and `OrderComponents` share the exact same
    // fields, apart from the last one, so here we simply treat the
    // `orderParameters` argument as `OrderComponents` and then set
    // the last field to the correct data
    ISeaport.OrderComponents memory orderComponents;
    assembly {
      orderComponents := orderParameters
    }
    orderComponents.counter = EXCHANGE.getCounter(orderParameters.offerer);

    orderHash = EXCHANGE.getOrderHash(orderComponents);
  }

  function _getFilledAmount(bytes32 orderHash) internal view returns (uint256 totalFilled) {
    (, , totalFilled, ) = EXCHANGE.getOrderStatus(orderHash);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISeaport} from "../../../interfaces/ISeaport.sol";

// Notes on the Seaport module:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract SeaportV14Module is BaseExchangeModule {
  // --- Structs ---

  struct SeaportETHListingWithPrice {
    ISeaport.AdvancedOrder order;
    uint256 price;
  }

  // --- Fields ---

  ISeaport public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ISeaport(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ISeaport.AdvancedOrder calldata order,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        params.amount
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, params.amount);
  }

  // --- Single ERC20 listing ---

  function acceptERC20Listing(
    ISeaport.AdvancedOrder calldata order,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        0
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, 0);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    SeaportETHListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(
          orders[i].order,
          criteriaResolvers,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i].order, criteriaResolvers, params.fillTo, orders[i].price);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function acceptERC20Listings(
    ISeaport.AdvancedOrder[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Single ERC721 offer ---

  function acceptERC721Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC721 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC721 &&
      nftItem.itemType != ISeaport.ItemType.ERC721_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC721 nftToken = IERC721(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC721IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC721
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    // Pay fees
    if (nftToken.ownerOf(identifier) != address(this)) {
      // Only pay fees if the fill was successful
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, paymentToken);

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Single ERC1155 offer ---

  function acceptERC1155Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC1155 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC1155 &&
      nftItem.itemType != ISeaport.ItemType.ERC1155_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC1155 nftToken = IERC1155(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC1155IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC1155
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    uint256 balanceBefore = nftToken.balanceOf(address(this), identifier);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 balanceAfter = nftToken.balanceOf(address(this), identifier);

    // Pay fees
    uint256 amountFilled = balanceBefore - balanceAfter;
    if (amountFilled > 0) {
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(
          fee.recipient,
          // Only pay fees for the amount that was actually filled
          (fee.amount * amountFilled) / order.numerator,
          paymentToken
        );

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Generic handler (used for Seaport-based approvals) ---

  function matchOrders(
    ISeaport.Order[] calldata orders,
    ISeaport.Fulfillment[] calldata fulfillments
  ) external nonReentrant {
    // We don't perform any kind of input or return value validation,
    // so this function should be used with precaution - the official
    // way to use it is only for Seaport-based approvals
    EXCHANGE.matchOrders(orders, fulfillments);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  // NOTE: In lots of cases, Seaport will not revert if fills were not
  // fully executed. An example of that is partial filling, which will
  // successfully fill any amount that is still available (including a
  // zero amount). One way to ensure that we revert in case of partial
  // executions is to check the order's filled amount before and after
  // we trigger the fill (we can use Seaport's `getOrderStatus` method
  // to check). Since this can be expensive in terms of gas, we have a
  // separate method variant to be called when reverts are enabled.

  function _fillSingleOrder(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    {} catch {}
  }

  function _fillSingleOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Cache the order's hash
    bytes32 orderHash = _getOrderHash(order.parameters);

    // Before filling, get the order's filled amount
    uint256 beforeFilledAmount = _getFilledAmount(orderHash);

    // Execute the fill
    bool success;
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    returns (bool fulfilled) {
      success = fulfilled;
    } catch {
      revert UnsuccessfulFill();
    }

    if (!success) {
      revert UnsuccessfulFill();
    } else {
      // After successfully filling, get the order's filled amount
      uint256 afterFilledAmount = _getFilledAmount(orderHash);

      // Make sure the amount filled as part of this call is correct
      if (afterFilledAmount - beforeFilledAmount != order.numerator) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _getOrderHash(
    // Must use `memory` instead of `calldata` for the below cast
    ISeaport.OrderParameters memory orderParameters
  ) internal view returns (bytes32 orderHash) {
    // `OrderParameters` and `OrderComponents` share the exact same
    // fields, apart from the last one, so here we simply treat the
    // `orderParameters` argument as `OrderComponents` and then set
    // the last field to the correct data
    ISeaport.OrderComponents memory orderComponents;
    assembly {
      orderComponents := orderParameters
    }
    orderComponents.counter = EXCHANGE.getCounter(orderParameters.offerer);

    orderHash = EXCHANGE.getOrderHash(orderComponents);
  }

  function _getFilledAmount(bytes32 orderHash) internal view returns (uint256 totalFilled) {
    (, , totalFilled, ) = EXCHANGE.getOrderStatus(orderHash);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISeaport} from "../../../interfaces/ISeaport.sol";

// Notes on the Seaport module:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract SeaportV15Module is BaseExchangeModule {
  // --- Structs ---

  struct SeaportETHListingWithPrice {
    ISeaport.AdvancedOrder order;
    uint256 price;
  }

  struct SeaportPrivateListingWithPrice {
    ISeaport.AdvancedOrder[] orders;
    ISeaport.Fulfillment[] fulfillments;
    uint256 price;
  }

  // --- Fields ---

  ISeaport public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = ISeaport(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    ISeaport.AdvancedOrder calldata order,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        params.amount
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, params.amount);
  }

  // --- Single ERC20 listing ---

  function acceptERC20Listing(
    ISeaport.AdvancedOrder calldata order,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(
        order,
        new ISeaport.CriteriaResolver[](0),
        params.fillTo,
        0
      )
      : _fillSingleOrder(order, new ISeaport.CriteriaResolver[](0), params.fillTo, 0);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    SeaportETHListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(
          orders[i].order,
          criteriaResolvers,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i].order, criteriaResolvers, params.fillTo, orders[i].price);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function acceptERC20Listings(
    ISeaport.AdvancedOrder[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillSingleOrderWithRevertIfIncomplete(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillSingleOrder(orders[i], criteriaResolvers, params.fillTo, 0);

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple ETH private listings ---

  function acceptETHPrivateListings(
    SeaportPrivateListingWithPrice[] calldata orders,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillPrivateOrderWithRevertIfIncomplete(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillPrivateOrder(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          orders[i].price
        );

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Multiple Private ERC20 Private listings ---

  function acceptERC20PrivateListings(
    SeaportPrivateListingWithPrice[] calldata orders,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    uint256 length = orders.length;
    ISeaport.CriteriaResolver[] memory criteriaResolvers = new ISeaport.CriteriaResolver[](0);

    // Execute the fills
    if (params.revertIfIncomplete) {
      for (uint256 i; i < length; ) {
        _fillPrivateOrderWithRevertIfIncomplete(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          0
        );

        unchecked {
          ++i;
        }
      }
    } else {
      for (uint256 i; i < length; ) {
        _fillPrivateOrder(
          orders[i].orders,
          criteriaResolvers,
          orders[i].fulfillments,
          params.fillTo,
          0
        );

        unchecked {
          ++i;
        }
      }
    }
  }

  // --- Single ERC721 offer ---

  function acceptERC721Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC721 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC721 &&
      nftItem.itemType != ISeaport.ItemType.ERC721_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC721 nftToken = IERC721(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC721IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC721
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    // Pay fees
    if (nftToken.ownerOf(identifier) != address(this)) {
      // Only pay fees if the fill was successful
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, paymentToken);

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Single ERC1155 offer ---

  function acceptERC1155Offer(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    // Extract the ERC1155 token from the consideration items
    ISeaport.ConsiderationItem calldata nftItem = order.parameters.consideration[0];
    if (
      nftItem.itemType != ISeaport.ItemType.ERC1155 &&
      nftItem.itemType != ISeaport.ItemType.ERC1155_WITH_CRITERIA
    ) {
      revert WrongParams();
    }
    IERC1155 nftToken = IERC1155(nftItem.token);

    // Extract the payment token from the offer items
    ISeaport.OfferItem calldata paymentItem = order.parameters.offer[0];
    IERC20 paymentToken = IERC20(paymentItem.token);

    // Approve the exchange if needed
    _approveERC1155IfNeeded(nftToken, address(EXCHANGE));
    _approveERC20IfNeeded(paymentToken, address(EXCHANGE), type(uint256).max);

    uint256 identifier = nftItem.itemType == ISeaport.ItemType.ERC1155
      ? nftItem.identifierOrCriteria
      : criteriaResolvers[0].identifier;

    uint256 balanceBefore = nftToken.balanceOf(address(this), identifier);

    // Execute the fill
    params.revertIfIncomplete
      ? _fillSingleOrderWithRevertIfIncomplete(order, criteriaResolvers, address(this), 0)
      : _fillSingleOrder(order, criteriaResolvers, address(this), 0);

    uint256 balanceAfter = nftToken.balanceOf(address(this), identifier);

    // Pay fees
    uint256 amountFilled = balanceBefore - balanceAfter;
    if (amountFilled > 0) {
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(
          fee.recipient,
          // Only pay fees for the amount that was actually filled
          (fee.amount * amountFilled) / order.numerator,
          paymentToken
        );

        unchecked {
          ++i;
        }
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, nftToken, identifier);

    // Forward any left payment to the specified receiver
    _sendAllERC20(params.fillTo, paymentToken);
  }

  // --- Generic handler (used for Seaport-based approvals) ---

  function matchOrders(
    ISeaport.Order[] calldata orders,
    ISeaport.Fulfillment[] calldata fulfillments
  ) external nonReentrant {
    // We don't perform any kind of input or return value validation,
    // so this function should be used with precaution - the official
    // way to use it is only for Seaport-based approvals
    EXCHANGE.matchOrders(orders, fulfillments);
  }

  // --- ERC1271 ---

  function isValidSignature(bytes32, bytes memory) external pure returns (bytes4) {
    // Needed for filling private listings
    return this.isValidSignature.selector;
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  // NOTE: In lots of cases, Seaport will not revert if fills were not
  // fully executed. An example of that is partial filling, which will
  // successfully fill any amount that is still available (including a
  // zero amount). One way to ensure that we revert in case of partial
  // executions is to check the order's filled amount before and after
  // we trigger the fill (we can use Seaport's `getOrderStatus` method
  // to check). Since this can be expensive in terms of gas, we have a
  // separate method variant to be called when reverts are enabled.

  function _fillSingleOrder(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    {} catch {}
  }

  function _fillSingleOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder calldata order,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    address receiver,
    uint256 value
  ) internal {
    // Cache the order's hash
    bytes32 orderHash = _getOrderHash(order.parameters);

    // Before filling, get the order's filled amount
    uint256 beforeFilledAmount = _getFilledAmount(orderHash, order.denominator);

    // Execute the fill
    bool success;
    try
      EXCHANGE.fulfillAdvancedOrder{value: value}(order, criteriaResolvers, bytes32(0), receiver)
    returns (bool fulfilled) {
      success = fulfilled;
    } catch {
      revert UnsuccessfulFill();
    }

    if (!success) {
      revert UnsuccessfulFill();
    } else {
      // After successfully filling, get the order's filled amount
      uint256 afterFilledAmount = _getFilledAmount(orderHash, order.denominator);

      // Make sure the amount filled as part of this call is correct
      if (afterFilledAmount - beforeFilledAmount != order.numerator) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _fillPrivateOrder(
    ISeaport.AdvancedOrder[] calldata advancedOrders,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    ISeaport.Fulfillment[] memory fulfillments,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.matchAdvancedOrders{value: value}(
        advancedOrders,
        criteriaResolvers,
        fulfillments,
        receiver
      )
    {} catch {}
  }

  function _fillPrivateOrderWithRevertIfIncomplete(
    ISeaport.AdvancedOrder[] calldata advancedOrders,
    // Use `memory` instead of `calldata` to avoid `Stack too deep` errors
    ISeaport.CriteriaResolver[] memory criteriaResolvers,
    ISeaport.Fulfillment[] memory fulfillments,
    address receiver,
    uint256 value
  ) internal {
    // Execute the fill
    try
      EXCHANGE.matchAdvancedOrders{value: value}(
        advancedOrders,
        criteriaResolvers,
        fulfillments,
        receiver
      )
    {} catch {
      revert UnsuccessfulFill();
    }
  }

  function _getOrderHash(
    // Must use `memory` instead of `calldata` for the below cast
    ISeaport.OrderParameters memory orderParameters
  ) internal view returns (bytes32 orderHash) {
    // `OrderParameters` and `OrderComponents` share the exact same
    // fields, apart from the last one, so here we simply treat the
    // `orderParameters` argument as `OrderComponents` and then set
    // the last field to the correct data
    ISeaport.OrderComponents memory orderComponents;
    assembly {
      orderComponents := orderParameters
    }
    orderComponents.counter = EXCHANGE.getCounter(orderParameters.offerer);

    orderHash = EXCHANGE.getOrderHash(orderComponents);
  }

  function _getFilledAmount(
    bytes32 orderHash,
    uint256 adjustedTotalSize
  ) internal view returns (uint256 adjustedTotalFilled) {
    (, , uint256 totalFilled, uint256 totalSize) = EXCHANGE.getOrderStatus(orderHash);
    adjustedTotalFilled = totalSize > 0 ? (totalFilled * adjustedTotalSize) / totalSize : 0;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISudoswapPair, ISudoswapRouter} from "../../../interfaces/ISudoswap.sol";

contract SudoswapModule is BaseExchangeModule {
  // --- Fields ---

  ISudoswapRouter public immutable SUDOSWAP_ROUTER;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address sudoswapRouter
  ) BaseModule(owner) BaseExchangeModule(router) {
    SUDOSWAP_ROUTER = ISudoswapRouter(sudoswapRouter);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple ETH listings ---

  function buyWithETH(
    ISudoswapPair[] calldata pairs,
    uint256[] calldata nftIds,
    uint256 deadline,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 pairsLength = pairs.length;
    for (uint256 i; i < pairsLength; ) {
      // Build router data
      ISudoswapRouter.PairSwapSpecific[] memory swapList = new ISudoswapRouter.PairSwapSpecific[](
        1
      );
      swapList[0] = ISudoswapRouter.PairSwapSpecific({pair: pairs[i], nftIds: new uint256[](1)});
      swapList[0].nftIds[0] = nftIds[i];

      // Fetch the current price quote
      (, , , uint256 price, ) = pairs[i].getBuyNFTQuote(1);

      // Execute fill
      try
        SUDOSWAP_ROUTER.swapETHForSpecificNFTs{value: price}(
          swapList,
          address(this),
          params.fillTo,
          deadline
        )
      {} catch {
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function buyWithERC20(
    ISudoswapPair[] calldata pairs,
    uint256[] calldata nftIds,
    uint256 deadline,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the router if needed
    _approveERC20IfNeeded(params.token, address(SUDOSWAP_ROUTER), params.amount);

    uint256 pairsLength = pairs.length;
    for (uint256 i; i < pairsLength; ) {
      // Build router data
      ISudoswapRouter.PairSwapSpecific[] memory swapList = new ISudoswapRouter.PairSwapSpecific[](
        1
      );
      swapList[0] = ISudoswapRouter.PairSwapSpecific({pair: pairs[i], nftIds: new uint256[](1)});
      swapList[0].nftIds[0] = nftIds[i];

      // Fetch the current price quote
      (, , , uint256 price, ) = pairs[i].getBuyNFTQuote(1);

      // Execute fill
      try
        SUDOSWAP_ROUTER.swapERC20ForSpecificNFTs(swapList, price, params.fillTo, deadline)
      {} catch {
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- Single ERC721 offer ---

  function sell(
    ISudoswapPair pair,
    uint256 nftId,
    uint256 minOutput,
    uint256 deadline,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    IERC721 collection = pair.nft();

    // Approve the router if needed
    _approveERC721IfNeeded(collection, address(SUDOSWAP_ROUTER));

    // Build router data
    ISudoswapRouter.PairSwapSpecific[] memory swapList = new ISudoswapRouter.PairSwapSpecific[](1);
    swapList[0] = ISudoswapRouter.PairSwapSpecific({pair: pair, nftIds: new uint256[](1)});
    swapList[0].nftIds[0] = nftId;

    // Execute fill
    try SUDOSWAP_ROUTER.swapNFTsForToken(swapList, minOutput, address(this), deadline) {
      ISudoswapPair.PairVariant variant = pair.pairVariant();

      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        uint8(variant) < 2
          ? _sendETH(fee.recipient, fee.amount)
          : _sendERC20(fee.recipient, fee.amount, pair.token());

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      uint8(variant) < 2 ? _sendAllETH(params.fillTo) : _sendAllERC20(params.fillTo, pair.token());
    } catch {
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, collection, nftId);
  }

  // --- ERC721 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISudoswapPairV2} from "../../../interfaces/ISudoswapV2.sol";

contract SudoswapV2Module is BaseExchangeModule {
  // --- Constructor ---

  constructor(address owner, address router) BaseModule(owner) BaseExchangeModule(router) {}

  // --- Fallback ---

  receive() external payable {}

  // --- Multiple ETH listings ---

  function buyWithETH(
    ISudoswapPairV2[] calldata pairs,
    // Token ids for ERC721 pairs, amounts for ERC1155 pairs
    uint256[] calldata nftIds,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256[] memory tokenIds = new uint256[](1);

    uint256 pairsLength = pairs.length;
    for (uint256 i; i < pairsLength; ) {
      ISudoswapPairV2 pair = pairs[i];
      ISudoswapPairV2.PairVariant variant = pair.pairVariant();

      bool isERC1155 = isERC1155Pair(variant);

      // Fetch the current price
      (, , , uint256 price, , ) = pair.getBuyNFTQuote(
        isERC1155 ? pair.nftId() : nftIds[i],
        isERC1155 ? nftIds[i] : 1
      );

      tokenIds[0] = nftIds[i];

      // Execute fill
      try
        pair.swapTokenForSpecificNFTs{value: price}(
          tokenIds,
          price,
          params.fillTo,
          false,
          address(0)
        )
      {} catch {
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- Multiple ERC20 listings ---

  function buyWithERC20(
    ISudoswapPairV2[] calldata pairs,
    // Token ids for ERC721 pairs, amounts for ERC1155 pairs
    uint256[] calldata nftIds,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    uint256[] memory tokenIds = new uint256[](1);

    uint256 pairsLength = pairs.length;
    for (uint256 i; i < pairsLength; ) {
      ISudoswapPairV2 pair = pairs[i];
      ISudoswapPairV2.PairVariant variant = pair.pairVariant();

      bool isERC1155 = isERC1155Pair(variant);

      // Fetch the current price
      (, , , uint256 price, , ) = pair.getBuyNFTQuote(
        isERC1155 ? pair.nftId() : nftIds[i],
        isERC1155 ? nftIds[i] : 1
      );

      tokenIds[0] = nftIds[i];

      // Approve the pair if needed
      _approveERC20IfNeeded(params.token, address(pair), params.amount);

      // Execute fill
      try
        pair.swapTokenForSpecificNFTs(tokenIds, price, params.fillTo, false, address(0))
      {} catch {
        if (params.revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- Single offer ---

  function sell(
    ISudoswapPairV2 pair,
    // Token id for ERC721 pairs, amount for ERC1155 pairs
    uint256 nftId,
    uint256 minOutput,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    ISudoswapPairV2.PairVariant variant = pair.pairVariant();

    bool isETH = isETHPair(variant);
    address nft = pair.nft();

    IERC20 token = isETH ? IERC20(address(0)) : pair.token();

    // Approve the pair if needed
    if (!isERC1155Pair(variant)) {
      _approveERC721IfNeeded(IERC721(nft), address(pair));
    } else {
      _approveERC1155IfNeeded(IERC1155(nft), address(pair));
    }

    // Build router data
    uint256[] memory tokenIds = new uint256[](1);
    tokenIds[0] = nftId;

    // Execute fill
    try pair.swapNFTsForToken(tokenIds, minOutput, payable(address(this)), false, address(0)) {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        isETH ? _sendETH(fee.recipient, fee.amount) : _sendERC20(fee.recipient, fee.amount, token);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      isETH ? _sendAllETH(params.fillTo) : _sendAllERC20(params.fillTo, token);
    } catch {
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any leftovers
    if (!isERC1155Pair(variant)) {
      _sendAllERC721(params.refundTo, IERC721(nft), nftId);
    } else {
      _sendAllERC1155(params.refundTo, IERC1155(nft), pair.nftId());
    }
  }

  // --- ERC721/1155 hooks ---

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal methods ---

  function isERC1155Pair(ISudoswapPairV2.PairVariant vaiant) internal pure returns (bool) {
    return
      ISudoswapPairV2.PairVariant.ERC1155_ERC20 == vaiant ||
      ISudoswapPairV2.PairVariant.ERC1155_ETH == vaiant;
  }

  function isETHPair(ISudoswapPairV2.PairVariant vaiant) internal pure returns (bool) {
    return
      ISudoswapPairV2.PairVariant.ERC721_ETH == vaiant ||
      ISudoswapPairV2.PairVariant.ERC1155_ETH == vaiant;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {ISuperRare} from "../../../interfaces/ISuperRare.sol";

// Notes:
// - only supports filling "buy now" listings (ERC721 and ETH-denominated)

contract SuperRareModule is BaseExchangeModule {
  // --- Structs ---

  struct Listing {
    IERC721 token;
    uint256 tokenId;
    address currency;
    uint256 price;
    uint256 priceWithFees;
  }

  // --- Fields ---

  ISuperRare public immutable BAZAAR;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address bazaar
  ) BaseModule(owner) BaseExchangeModule(router) {
    BAZAAR = ISuperRare(bazaar);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    Listing calldata listing,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(
      listing.token,
      listing.tokenId,
      listing.currency,
      listing.price,
      params.fillTo,
      params.revertIfIncomplete,
      listing.priceWithFees
    );
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    Listing[] calldata listings,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    uint256 length = listings.length;
    for (uint256 i = 0; i < length; ) {
      _buy(
        listings[i].token,
        listings[i].tokenId,
        listings[i].currency,
        listings[i].price,
        params.fillTo,
        params.revertIfIncomplete,
        listings[i].priceWithFees
      );

      unchecked {
        ++i;
      }
    }
  }

  // --- ERC721 hooks ---

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata // data
  ) external pure returns (bytes4) {
    return this.onERC721Received.selector;
  }

  // --- Internal ---

  function _buy(
    IERC721 token,
    uint256 tokenId,
    address currency,
    uint256 price,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute fill
    try BAZAAR.buy{value: value}(token, tokenId, currency, price) {
      token.safeTransferFrom(address(this), receiver, tokenId);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IUniswapV3Router} from "../../../interfaces/IUniswapV3Router.sol";
import {IWETH} from "../../../interfaces/IWETH.sol";

// Notes:
// - supports swapping ETH and ERC20 to any token via a direct path

contract SwapModule is BaseExchangeModule {
  struct TransferDetail {
    address recipient;
    uint256 amount;
    bool toETH;
  }

  struct BuySwap {
    IUniswapV3Router.ExactOutputSingleParams params;
    TransferDetail[] transfers;
  }

  struct SellSwap {
    IUniswapV3Router.ExactInputSingleParams params;
    TransferDetail[] transfers;
  }

  // --- Fields ---

  IWETH public immutable WETH;
  IUniswapV3Router public immutable SWAP_ROUTER;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address weth,
    address swapRouter
  ) BaseModule(owner) BaseExchangeModule(router) {
    WETH = IWETH(weth);
    SWAP_ROUTER = IUniswapV3Router(swapRouter);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Wrap ---

  function wrap(TransferDetail[] calldata targets) external payable nonReentrant {
    WETH.deposit{value: msg.value}();

    uint256 length = targets.length;
    for (uint256 i = 0; i < length; ) {
      // Zero represents "everything"
      uint256 amount = targets[i].amount == 0 ? WETH.balanceOf(address(this)) : targets[i].amount;
      _sendERC20(targets[i].recipient, amount, WETH);

      unchecked {
        ++i;
      }
    }
  }

  // --- Unwrap ---

  function unwrap(TransferDetail[] calldata targets) external nonReentrant {
    uint256 balance = WETH.balanceOf(address(this));
    WETH.withdraw(balance);

    uint256 length = targets.length;
    for (uint256 i = 0; i < length; ) {
      // Zero represents "everything"
      uint256 amount = targets[i].amount == 0 ? address(this).balance : targets[i].amount;
      _sendETH(targets[i].recipient, amount);

      unchecked {
        ++i;
      }
    }
  }

  // --- Swaps ---

  function ethToExactOutput(
    // Assumes all swaps have the same token in
    BuySwap[] calldata swaps,
    address refundTo,
    bool revertIfIncomplete
  ) external payable nonReentrant refundETHLeftover(refundTo) {
    uint256 swapsLength = swaps.length;
    for (uint256 i; i < swapsLength; ) {
      BuySwap calldata swap = swaps[i];

      // Execute the swap
      try SWAP_ROUTER.exactOutputSingle{value: swap.params.amountInMaximum}(swap.params) {
        uint256 length = swap.transfers.length;
        for (uint256 j = 0; j < length; ) {
          TransferDetail calldata transferDetail = swap.transfers[j];
          if (transferDetail.toETH) {
            // Zero represents "everything"
            uint256 amount = transferDetail.amount == 0
              ? WETH.balanceOf(address(this))
              : transferDetail.amount;

            WETH.withdraw(amount);
            _sendETH(transferDetail.recipient, amount);
          } else {
            // Zero represents "everything"
            uint256 amount = transferDetail.amount == 0
              ? IERC20(swap.params.tokenOut).balanceOf(address(this))
              : transferDetail.amount;

            _sendERC20(transferDetail.recipient, amount, IERC20(swap.params.tokenOut));
          }

          unchecked {
            ++j;
          }
        }
      } catch {
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }

    // Refund any ETH stucked in the router
    SWAP_ROUTER.refundETH();
  }

  function erc20ToExactOutput(
    // Assumes all swaps have the same token in
    BuySwap[] calldata swaps,
    address refundTo,
    bool revertIfIncomplete
  ) external nonReentrant refundERC20Leftover(refundTo, swaps[0].params.tokenIn) {
    uint256 swapsLength = swaps.length;
    for (uint256 i; i < swapsLength; ) {
      BuySwap calldata swap = swaps[i];

      // Approve the router if needed
      _approveERC20IfNeeded(swap.params.tokenIn, address(SWAP_ROUTER), swap.params.amountInMaximum);

      // Execute the swap
      try SWAP_ROUTER.exactOutputSingle(swap.params) {
        uint256 transfersLength = swap.transfers.length;
        for (uint256 j = 0; j < transfersLength; ) {
          TransferDetail calldata transferDetail = swap.transfers[j];
          if (transferDetail.toETH) {
            // Zero represents "everything"
            uint256 amount = transferDetail.amount == 0
              ? WETH.balanceOf(address(this))
              : transferDetail.amount;

            WETH.withdraw(amount);
            _sendETH(transferDetail.recipient, amount);
          } else {
            // Zero represents "everything"
            uint256 amount = transferDetail.amount == 0
              ? IERC20(swap.params.tokenOut).balanceOf(address(this))
              : transferDetail.amount;

            _sendERC20(transferDetail.recipient, amount, IERC20(swap.params.tokenOut));
          }

          unchecked {
            ++j;
          }
        }
      } catch {
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }

  function erc20ToExactInput(
    // Assumes all swaps have the same token in
    SellSwap[] calldata swaps,
    address refundTo,
    bool revertIfIncomplete
  ) external nonReentrant refundERC20Leftover(refundTo, swaps[0].params.tokenIn) {
    uint256 swapsLength = swaps.length;
    for (uint256 i; i < swapsLength; ) {
      SellSwap calldata swap = swaps[i];

      // Approve the router if needed
      _approveERC20IfNeeded(swap.params.tokenIn, address(SWAP_ROUTER), swap.params.amountIn);

      // Execute the swap
      try SWAP_ROUTER.exactInputSingle(swap.params) {
        uint256 transfersLength = swap.transfers.length;
        for (uint256 j = 0; j < transfersLength; ) {
          TransferDetail calldata transferDetail = swap.transfers[j];
          if (transferDetail.toETH) {
            // Zero represents "everything"
            uint256 amount = transferDetail.amount == 0
              ? WETH.balanceOf(address(this))
              : transferDetail.amount;

            WETH.withdraw(amount);
            _sendETH(transferDetail.recipient, amount);
          } else {
            // Zero represents "everything"
            uint256 amount = transferDetail.amount == 0
              ? IERC20(swap.params.tokenOut).balanceOf(address(this))
              : transferDetail.amount;

            _sendERC20(transferDetail.recipient, amount, IERC20(swap.params.tokenOut));
          }

          unchecked {
            ++j;
          }
        }
      } catch {
        if (revertIfIncomplete) {
          revert UnsuccessfulFill();
        }
      }

      unchecked {
        ++i;
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IX2Y2} from "../../../interfaces/IX2Y2.sol";

// Notes on the X2Y2 module:
// - supports filling listings (both ERC721/ERC1155 but only ETH-denominated)
// - supports filling offers (both ERC721/ERC1155)

contract X2Y2Module is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Fields ---

  IX2Y2 public immutable EXCHANGE;

  address public immutable ERC721_DELEGATE;
  address public immutable ERC1155_DELEGATE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange,
    address erc721Delegate,
    address erc1155Delegate
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IX2Y2(exchange);
    ERC721_DELEGATE = erc721Delegate;
    ERC1155_DELEGATE = erc1155Delegate;
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    IX2Y2.RunInput calldata input,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(input, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    IX2Y2.RunInput[] calldata inputs,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // X2Y2 does not support batch filling so we fill orders one by one
    uint256 length = inputs.length;
    for (uint256 i = 0; i < length; ) {
      // Execute fill
      _buy(inputs[i], params.fillTo, params.revertIfIncomplete, inputs[i].details[0].price);

      unchecked {
        ++i;
      }
    }
  }

  // --- [ERC721] Single offer ---

  function acceptERC721Offer(
    IX2Y2.RunInput calldata input,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    if (input.details.length != 1) {
      revert WrongParams();
    }

    // Extract the order's corresponding token
    IX2Y2.SettleDetail calldata detail = input.details[0];
    IX2Y2.Order calldata order = input.orders[detail.orderIdx];
    IX2Y2.OrderItem calldata orderItem = order.items[detail.itemIdx];
    if (detail.op != IX2Y2.Op.COMPLETE_BUY_OFFER) {
      revert WrongParams();
    }

    // Apply any mask (if required)
    bytes memory data = orderItem.data;
    {
      if (order.dataMask.length > 0 && detail.dataReplacement.length > 0) {
        _arrayReplace(data, detail.dataReplacement, order.dataMask);
      }
    }

    IX2Y2.ERC721Pair[] memory pairs = abi.decode(orderItem.data, (IX2Y2.ERC721Pair[]));
    if (pairs.length != 1) {
      revert WrongParams();
    }

    IERC721 collection = pairs[0].token;
    uint256 tokenId = pairs[0].tokenId;

    // Approve the delegate if needed
    _approveERC721IfNeeded(collection, ERC721_DELEGATE);

    // Execute fill
    try EXCHANGE.run(input) {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, order.currency);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(params.fillTo, order.currency);
    } catch {
      // Revert if specified
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, collection, tokenId);
  }

  // --- [ERC1155] Single offer ---

  function acceptERC1155Offer(
    IX2Y2.RunInput calldata input,
    OfferParams calldata params,
    Fee[] calldata fees
  ) external nonReentrant {
    if (input.details.length != 1) {
      revert WrongParams();
    }

    // Extract the order's corresponding token
    IX2Y2.SettleDetail calldata detail = input.details[0];
    IX2Y2.Order calldata order = input.orders[detail.orderIdx];
    IX2Y2.OrderItem calldata orderItem = order.items[detail.itemIdx];
    if (detail.op != IX2Y2.Op.COMPLETE_BUY_OFFER) {
      revert WrongParams();
    }

    // Apply any mask (if required)
    bytes memory data = orderItem.data;
    {
      if (order.dataMask.length > 0 && detail.dataReplacement.length > 0) {
        _arrayReplace(data, detail.dataReplacement, order.dataMask);
      }
    }

    IX2Y2.ERC1155Pair[] memory pairs = abi.decode(orderItem.data, (IX2Y2.ERC1155Pair[]));
    if (pairs.length != 1) {
      revert WrongParams();
    }

    IERC1155 collection = pairs[0].token;
    uint256 tokenId = pairs[0].tokenId;

    // Approve the delegate if needed
    _approveERC1155IfNeeded(collection, ERC1155_DELEGATE);

    // Execute fill
    try EXCHANGE.run(input) {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, order.currency);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(params.fillTo, order.currency);
    } catch {
      // Revert if specified
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, collection, tokenId);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _arrayReplace(
    bytes memory source,
    bytes memory replacement,
    bytes memory mask
  ) internal view virtual {
    uint256 sourceLength = source.length;
    for (uint256 i; i < sourceLength; ) {
      if (mask[i] != 0) {
        source[i] = replacement[i];
      }

      unchecked {
        ++i;
      }
    }
  }

  function _buy(
    IX2Y2.RunInput calldata input,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    if (input.details.length != 1) {
      revert WrongParams();
    }

    // Extract the order's corresponding token
    IX2Y2.SettleDetail calldata detail = input.details[0];
    IX2Y2.Order calldata order = input.orders[detail.orderIdx];
    IX2Y2.OrderItem calldata orderItem = order.items[detail.itemIdx];
    if (detail.op != IX2Y2.Op.COMPLETE_SELL_OFFER) {
      revert WrongParams();
    }

    // Execute fill
    try EXCHANGE.run{value: value}(input) {
      if (order.delegateType == 1) {
        IX2Y2.ERC721Pair[] memory pairs = abi.decode(orderItem.data, (IX2Y2.ERC721Pair[]));
        if (pairs.length != 1) {
          revert WrongParams();
        }

        pairs[0].token.safeTransferFrom(address(this), receiver, pairs[0].tokenId);
      } else {
        IX2Y2.ERC1155Pair[] memory pairs = abi.decode(orderItem.data, (IX2Y2.ERC1155Pair[]));
        if (pairs.length != 1) {
          revert WrongParams();
        }

        pairs[0].token.safeTransferFrom(
          address(this),
          receiver,
          pairs[0].tokenId,
          pairs[0].amount,
          ""
        );
      }
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IZeroExV4} from "../../../interfaces/IZeroExV4.sol";

// Notes:
// - supports filling listings (both ERC721/ERC1155)
// - supports filling offers (both ERC721/ERC1155)

contract ZeroExV4Module is BaseExchangeModule {
  using SafeERC20 for IERC20;

  // --- Fields ---

  IZeroExV4 public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IZeroExV4(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- [ERC721] Single ETH listing ---

  function acceptETHListingERC721(
    IZeroExV4.ERC721Order calldata order,
    IZeroExV4.Signature calldata signature,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC721(order, signature, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC721] Single ERC20 listing ---

  function acceptERC20ListingERC721(
    IZeroExV4.ERC721Order calldata order,
    IZeroExV4.Signature calldata signature,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC721(order, signature, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC721] Multiple ETH listings ---

  function acceptETHListingsERC721(
    IZeroExV4.ERC721Order[] calldata orders,
    IZeroExV4.Signature[] calldata signatures,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC721s(orders, signatures, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC721] Multiple ERC20 listings ---

  function acceptERC20ListingsERC721(
    IZeroExV4.ERC721Order[] calldata orders,
    IZeroExV4.Signature[] calldata signatures,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC721s(orders, signatures, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC1155] Single ETH listing ---

  function acceptETHListingERC1155(
    IZeroExV4.ERC1155Order calldata order,
    IZeroExV4.Signature calldata signature,
    uint128 amount,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC1155(order, signature, amount, params.fillTo, params.revertIfIncomplete, params.amount);
  }

  // --- [ERC1155] Single ERC20 listing ---

  function acceptERC20ListingERC1155(
    IZeroExV4.ERC1155Order calldata order,
    IZeroExV4.Signature calldata signature,
    uint128 amount,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC1155(order, signature, amount, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC1155] Multiple ETH listings ---

  function acceptETHListingsERC1155(
    IZeroExV4.ERC1155Order[] calldata orders,
    IZeroExV4.Signature[] calldata signatures,
    uint128[] memory amounts,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buyERC1155s(
      orders,
      signatures,
      amounts,
      params.fillTo,
      params.revertIfIncomplete,
      params.amount
    );
  }

  // --- [ERC1155] Multiple ERC20 listings ---

  function acceptERC20ListingsERC1155(
    IZeroExV4.ERC1155Order[] calldata orders,
    IZeroExV4.Signature[] calldata signatures,
    uint128[] memory amounts,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Approve the exchange if needed
    _approveERC20IfNeeded(params.token, address(EXCHANGE), params.amount);

    // Execute fill
    _buyERC1155s(orders, signatures, amounts, params.fillTo, params.revertIfIncomplete, 0);
  }

  // --- [ERC721] Single offer ---

  function acceptERC721Offer(
    IZeroExV4.ERC721Order calldata order,
    IZeroExV4.Signature calldata signature,
    OfferParams calldata params,
    uint256 tokenId,
    Fee[] calldata fees
  ) external nonReentrant {
    // Approve the exchange if needed
    _approveERC721IfNeeded(order.erc721Token, address(EXCHANGE));

    // Execute fill
    try EXCHANGE.sellERC721(order, signature, tokenId, false, "") {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, order.erc20Token);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(params.fillTo, order.erc20Token);
    } catch {
      // Revert if specified
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC721 leftover
    _sendAllERC721(params.refundTo, order.erc721Token, tokenId);
  }

  // --- [ERC1155] Single offer ---

  function acceptERC1155Offer(
    IZeroExV4.ERC1155Order calldata order,
    IZeroExV4.Signature calldata signature,
    uint128 amount,
    OfferParams calldata params,
    uint256 tokenId,
    Fee[] calldata fees
  ) external nonReentrant {
    // Approve the exchange if needed
    _approveERC1155IfNeeded(order.erc1155Token, address(EXCHANGE));

    // Execute fill
    try EXCHANGE.sellERC1155(order, signature, tokenId, amount, false, "") {
      // Pay fees
      uint256 feesLength = fees.length;
      for (uint256 i; i < feesLength; ) {
        Fee memory fee = fees[i];
        _sendERC20(fee.recipient, fee.amount, order.erc20Token);

        unchecked {
          ++i;
        }
      }

      // Forward any left payment to the specified receiver
      _sendAllERC20(params.fillTo, order.erc20Token);
    } catch {
      // Revert if specified
      if (params.revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }

    // Refund any ERC1155 leftover
    _sendAllERC1155(params.refundTo, order.erc1155Token, tokenId);
  }

  // --- ERC721 / ERC1155 hooks ---

  // Single token offer acceptance can be done approval-less by using the
  // standard `safeTransferFrom` method together with specifying data for
  // further contract calls. An example:
  // `safeTransferFrom(
  //      0xWALLET,
  //      0xMODULE,
  //      TOKEN_ID,
  //      0xABI_ENCODED_ROUTER_EXECUTION_CALLDATA_FOR_OFFER_ACCEPTANCE
  // )`

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256, // tokenId
    uint256, // amount
    bytes calldata data
  ) external returns (bytes4) {
    if (data.length > 0) {
      _makeCall(router, data, 0);
    }

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _buyERC721(
    IZeroExV4.ERC721Order calldata order,
    IZeroExV4.Signature calldata signature,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    // Execute fill
    try EXCHANGE.buyERC721{value: value}(order, signature, "") {
      order.erc721Token.safeTransferFrom(address(this), receiver, order.erc721TokenId);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _buyERC1155(
    IZeroExV4.ERC1155Order calldata order,
    IZeroExV4.Signature calldata signature,
    uint128 amount,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    try EXCHANGE.buyERC1155{value: value}(order, signature, amount, "") {
      order.erc1155Token.safeTransferFrom(
        address(this),
        receiver,
        order.erc1155TokenId,
        amount,
        ""
      );
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _buyERC721s(
    IZeroExV4.ERC721Order[] calldata orders,
    IZeroExV4.Signature[] calldata signatures,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    uint256 length = orders.length;

    // Execute fill
    try
      EXCHANGE.batchBuyERC721s{value: value}(
        orders,
        signatures,
        new bytes[](length),
        revertIfIncomplete
      )
    returns (bool[] memory fulfilled) {
      for (uint256 i = 0; i < length; ) {
        if (fulfilled[i]) {
          orders[i].erc721Token.safeTransferFrom(address(this), receiver, orders[i].erc721TokenId);
        }

        unchecked {
          ++i;
        }
      }
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }

  function _buyERC1155s(
    IZeroExV4.ERC1155Order[] calldata orders,
    IZeroExV4.Signature[] calldata signatures,
    uint128[] memory amounts,
    address receiver,
    bool revertIfIncomplete,
    uint256 value
  ) internal {
    uint256 length = orders.length;

    uint128[] memory fillAmounts = new uint128[](length);
    for (uint256 i = 0; i < length; ) {
      fillAmounts[i] = amounts[i];

      unchecked {
        ++i;
      }
    }

    // Execute fill
    try
      EXCHANGE.batchBuyERC1155s{value: value}(
        orders,
        signatures,
        fillAmounts,
        new bytes[](length),
        revertIfIncomplete
      )
    returns (bool[] memory fulfilled) {
      for (uint256 i = 0; i < length; ) {
        if (fulfilled[i]) {
          orders[i].erc1155Token.safeTransferFrom(
            address(this),
            receiver,
            orders[i].erc1155TokenId,
            fillAmounts[i],
            ""
          );
        }

        unchecked {
          ++i;
        }
      }
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {BaseExchangeModule} from "./BaseExchangeModule.sol";
import {BaseModule} from "../BaseModule.sol";
import {IZora} from "../../../interfaces/IZora.sol";

// Notes:
// - supports filling "asks"

contract ZoraModule is BaseExchangeModule {
  // --- Structs ---

  struct Ask {
    IERC721 collection;
    uint256 tokenId;
    address currency;
    uint256 amount;
    address finder;
  }

  // --- Fields ---

  IZora public immutable EXCHANGE;

  // --- Constructor ---

  constructor(
    address owner,
    address router,
    address exchange
  ) BaseModule(owner) BaseExchangeModule(router) {
    EXCHANGE = IZora(exchange);
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Single ETH listing ---

  function acceptETHListing(
    Ask calldata ask,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Execute fill
    _buy(ask, params.fillTo, params.revertIfIncomplete);
  }

  // --- Multiple ETH listings ---

  function acceptETHListings(
    Ask[] calldata asks,
    ETHListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundETHLeftover(params.refundTo)
    chargeETHFees(fees, params.amount)
  {
    // Foundation does not support batch filling so we fill orders one by one
    for (uint256 i = 0; i < asks.length; ) {
      _buy(asks[i], params.fillTo, params.revertIfIncomplete);

      unchecked {
        ++i;
      }
    }
  }

  // --- Single ERC20 listing ---

  function acceptERC20Listing(
    Ask calldata ask,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Execute fill
    _buy(ask, params.fillTo, params.revertIfIncomplete);
  }

  // --- Multiple ERC20 listings ---

  function acceptERC20Listings(
    Ask[] calldata asks,
    ERC20ListingParams calldata params,
    Fee[] calldata fees
  )
    external
    payable
    nonReentrant
    refundERC20Leftover(params.refundTo, params.token)
    chargeERC20Fees(fees, params.token, params.amount)
  {
    // Foundation does not support batch filling so we fill orders one by one
    for (uint256 i = 0; i < asks.length; ) {
      _buy(asks[i], params.fillTo, params.revertIfIncomplete);

      unchecked {
        ++i;
      }
    }
  }

  // --- ERC721 hooks ---

  function onERC721Received(
    address, // operator,
    address, // from
    uint256, // tokenId,
    bytes calldata // data
  ) external pure returns (bytes4) {
    return this.onERC721Received.selector;
  }

  // --- Internal ---

  function _buy(Ask calldata ask, address receiver, bool revertIfIncomplete) internal {
    // Execute fill
    try
      EXCHANGE.fillAsk{value: ask.currency == address(0) ? ask.amount : 0}(
        address(ask.collection),
        ask.tokenId,
        ask.currency,
        ask.amount,
        ask.finder
      )
    {
      ask.collection.safeTransferFrom(address(this), receiver, ask.tokenId);
    } catch {
      // Revert if specified
      if (revertIfIncomplete) {
        revert UnsuccessfulFill();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";

import {MintProxy} from "./MintProxy.sol";

contract MintModule {
  // --- Errors ---

  error UnsuccessfulCall();

  // --- Fields ---

  address public implementation;
  mapping(address => address) public proxies;

  // --- Constructor ---

  constructor() {
    implementation = address(new MintProxy());
  }

  // --- Methods ---

  function mint(address minter, bytes calldata data) external payable {
    address proxy = proxies[minter];
    if (proxy == address(0)) {
      proxy = Clones.cloneDeterministic(implementation, bytes32(uint256(uint160(minter))));
      MintProxy(proxy).initialize(minter);

      proxies[minter] = proxy;
    }

    (bool result, ) = proxy.call{value: msg.value}(data);
    if (!result) {
      revert UnsuccessfulCall();
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

contract MintProxy is ReentrancyGuard {
  // --- Structs ---

  struct Fee {
    address recipient;
    uint256 amount;
  }

  struct MintDetail {
    address to;
    bytes data;
    uint256 value;
    Fee[] fees;
    address token;
    uint256 quantity;
    string comment;
  }

  struct MintParams {
    address refundTo;
    bool revertIfIncomplete;
  }

  // --- Events ---

  event MintComment(address indexed token, uint256 quantity, string comment);

  // --- Errors ---

  error AlreadyInitialized();
  error Unauthorized();
  error UnsuccessfulCall();
  error UnsuccessfulMint();
  error UnsuccessfulPayment();

  // --- Fields ---

  address public owner;

  // --- Initializer ---

  function initialize(address _owner) external {
    if (owner != address(0)) {
      revert AlreadyInitialized();
    }

    owner = _owner;
  }

  // --- Methods ---

  function mintMultiple(
    MintDetail[] calldata mintDetails,
    MintParams calldata params
  ) external payable nonReentrant {
    uint256 length = mintDetails.length;
    for (uint256 i; i < length; ) {
      MintDetail calldata mintDetail = mintDetails[i];

      (bool result, ) = mintDetail.to.call{value: mintDetail.value}(mintDetail.data);
      if (!result && params.revertIfIncomplete) {
        revert UnsuccessfulMint();
      } else if (result) {
        Fee[] calldata fees = mintDetail.fees;

        uint256 feesLength = fees.length;
        for (uint256 j; j < feesLength; ) {
          _sendETH(fees[j].recipient, fees[j].amount);

          unchecked {
            ++j;
          }
        }

        if (bytes(mintDetail.comment).length > 0) {
          emit MintComment(mintDetail.token, mintDetail.quantity, mintDetail.comment);
        }
      }

      unchecked {
        ++i;
      }
    }

    uint256 leftover = address(this).balance;
    if (leftover > 0) {
      _sendETH(params.refundTo, leftover);
    }
  }

  function makeCalls(
    address[] calldata targets,
    bytes[] calldata data,
    uint256[] calldata values
  ) external payable nonReentrant {
    if (msg.sender != owner) {
      revert Unauthorized();
    }

    uint256 length = targets.length;
    for (uint256 i = 0; i < length; ) {
      (bool success, ) = payable(targets[i]).call{value: values[i]}(data[i]);
      if (!success) {
        revert UnsuccessfulCall();
      }

      unchecked {
        ++i;
      }
    }
  }

  // --- ERC721 / ERC1155 hooks ---

  function onERC721Received(
    address, // operator
    address, // from
    uint256 tokenId,
    bytes calldata // data
  ) external returns (bytes4) {
    IERC721(msg.sender).safeTransferFrom(address(this), owner, tokenId);

    return this.onERC721Received.selector;
  }

  function onERC1155Received(
    address, // operator
    address, // from
    uint256 tokenId,
    uint256 amount,
    bytes calldata // data
  ) external returns (bytes4) {
    IERC1155(msg.sender).safeTransferFrom(address(this), owner, tokenId, amount, "");

    return this.onERC1155Received.selector;
  }

  // --- Internal ---

  function _sendETH(address to, uint256 amount) internal {
    if (amount > 0) {
      (bool success, ) = payable(to).call{value: amount}("");
      if (!success) {
        revert UnsuccessfulPayment();
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";

contract ReservoirV6_0_1 is ReentrancyGuard {
  using Address for address;

  // --- Structs ---

  struct ExecutionInfo {
    address module;
    bytes data;
    uint256 value;
  }

  struct AmountCheckInfo {
    address target;
    bytes data;
    uint256 threshold;
  }

  // --- Errors ---

  error UnsuccessfulExecution();
  error UnsuccessfulPayment();

  // --- Modifiers ---

  modifier refundETH() {
    _;

    uint256 leftover = address(this).balance;
    if (leftover > 0) {
      (bool success, ) = payable(msg.sender).call{value: leftover}("");
      if (!success) {
        revert UnsuccessfulPayment();
      }
    }
  }

  // --- Fallback ---

  receive() external payable {}

  // --- Public ---

  // Trigger a set of executions atomically
  function execute(
    ExecutionInfo[] calldata executionInfos
  ) external payable nonReentrant refundETH {
    uint256 length = executionInfos.length;
    for (uint256 i = 0; i < length; ) {
      _executeInternal(executionInfos[i]);

      unchecked {
        ++i;
      }
    }
  }

  // Trigger a set of executions with amount checking. As opposed to the regular
  // `execute` method, `executeWithAmountCheck` supports stopping the executions
  // once the provided amount check reaches a certain value. This is useful when
  // trying to fill orders with slippage (eg. provide multiple orders and try to
  // fill until a certain balance is reached). In order to be flexible, checking
  // the amount is done generically by calling the `target` contract with `data`.
  // For example, this could be used to check the ERC721 total owned balance (by
  // using `balanceOf(owner)`), the ERC1155 total owned balance per token id (by
  // using `balanceOf(owner, tokenId)`), but also for checking the ERC1155 total
  // owned balance per multiple token ids (by using a custom contract that wraps
  // `balanceOfBatch(owners, tokenIds)`).
  function executeWithAmountCheck(
    ExecutionInfo[] calldata executionInfos,
    AmountCheckInfo calldata amountCheckInfo
  ) external payable nonReentrant refundETH {
    // Cache some data for efficiency
    address target = amountCheckInfo.target;
    bytes calldata data = amountCheckInfo.data;
    uint256 threshold = amountCheckInfo.threshold;

    uint256 length = executionInfos.length;
    for (uint256 i = 0; i < length; ) {
      // Check the amount and break if it exceeds the threshold
      uint256 amount = _getAmount(target, data);
      if (amount >= threshold) {
        break;
      }

      _executeInternal(executionInfos[i]);

      unchecked {
        ++i;
      }
    }
  }

  // --- Internal ---

  function _executeInternal(ExecutionInfo calldata executionInfo) internal {
    address module = executionInfo.module;

    // Ensure the target is a contract
    if (!module.isContract()) {
      revert UnsuccessfulExecution();
    }

    (bool success, ) = module.call{value: executionInfo.value}(executionInfo.data);
    if (!success) {
      revert UnsuccessfulExecution();
    }
  }

  function _getAmount(address target, bytes calldata data) internal view returns (uint256 amount) {
    // Ensure the target is a contract
    if (!target.isContract()) {
      revert UnsuccessfulExecution();
    }

    (bool success, bytes memory result) = target.staticcall(data);
    if (!success) {
      revert UnsuccessfulExecution();
    }

    amount = abi.decode(result, (uint256));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import { ZoneParameters, Schema } from "../lib/ConsiderationStructs.sol";

interface ZoneInterface {
    function validateOrder(
        ZoneParameters calldata zoneParameters
    ) external returns (bytes4 validOrderMagicValue);

    function getSeaportMetadata()
        external
        view
        returns (
            string memory name,
            Schema[] memory schemas // map to Seaport Improvement Proposal IDs
        );
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {ZoneParameters, Schema} from "../lib/ConsiderationStructs.sol";

interface ZoneInterfaceV16 {
  function authorizeOrder(
    ZoneParameters calldata zoneParameters
  ) external returns (bytes4 authorizeOrderMagicValue);

  function validateOrder(
    ZoneParameters calldata zoneParameters
  ) external returns (bytes4 validOrderMagicValue);

  function getSeaportMetadata()
    external
    view
    returns (
      string memory name,
      Schema[] memory schemas // map to Seaport Improvement Proposal IDs
    );
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

// prettier-ignore
enum OrderType {
    // 0: no partial fills, anyone can execute
    FULL_OPEN,

    // 1: partial fills supported, anyone can execute
    PARTIAL_OPEN,

    // 2: no partial fills, only offerer or zone can execute
    FULL_RESTRICTED,

    // 3: partial fills supported, only offerer or zone can execute
    PARTIAL_RESTRICTED,

    // 4: contract order type
    CONTRACT
}

// prettier-ignore
enum BasicOrderType {
    // 0: no partial fills, anyone can execute
    ETH_TO_ERC721_FULL_OPEN,

    // 1: partial fills supported, anyone can execute
    ETH_TO_ERC721_PARTIAL_OPEN,

    // 2: no partial fills, only offerer or zone can execute
    ETH_TO_ERC721_FULL_RESTRICTED,

    // 3: partial fills supported, only offerer or zone can execute
    ETH_TO_ERC721_PARTIAL_RESTRICTED,

    // 4: no partial fills, anyone can execute
    ETH_TO_ERC1155_FULL_OPEN,

    // 5: partial fills supported, anyone can execute
    ETH_TO_ERC1155_PARTIAL_OPEN,

    // 6: no partial fills, only offerer or zone can execute
    ETH_TO_ERC1155_FULL_RESTRICTED,

    // 7: partial fills supported, only offerer or zone can execute
    ETH_TO_ERC1155_PARTIAL_RESTRICTED,

    // 8: no partial fills, anyone can execute
    ERC20_TO_ERC721_FULL_OPEN,

    // 9: partial fills supported, anyone can execute
    ERC20_TO_ERC721_PARTIAL_OPEN,

    // 10: no partial fills, only offerer or zone can execute
    ERC20_TO_ERC721_FULL_RESTRICTED,

    // 11: partial fills supported, only offerer or zone can execute
    ERC20_TO_ERC721_PARTIAL_RESTRICTED,

    // 12: no partial fills, anyone can execute
    ERC20_TO_ERC1155_FULL_OPEN,

    // 13: partial fills supported, anyone can execute
    ERC20_TO_ERC1155_PARTIAL_OPEN,

    // 14: no partial fills, only offerer or zone can execute
    ERC20_TO_ERC1155_FULL_RESTRICTED,

    // 15: partial fills supported, only offerer or zone can execute
    ERC20_TO_ERC1155_PARTIAL_RESTRICTED,

    // 16: no partial fills, anyone can execute
    ERC721_TO_ERC20_FULL_OPEN,

    // 17: partial fills supported, anyone can execute
    ERC721_TO_ERC20_PARTIAL_OPEN,

    // 18: no partial fills, only offerer or zone can execute
    ERC721_TO_ERC20_FULL_RESTRICTED,

    // 19: partial fills supported, only offerer or zone can execute
    ERC721_TO_ERC20_PARTIAL_RESTRICTED,

    // 20: no partial fills, anyone can execute
    ERC1155_TO_ERC20_FULL_OPEN,

    // 21: partial fills supported, anyone can execute
    ERC1155_TO_ERC20_PARTIAL_OPEN,

    // 22: no partial fills, only offerer or zone can execute
    ERC1155_TO_ERC20_FULL_RESTRICTED,

    // 23: partial fills supported, only offerer or zone can execute
    ERC1155_TO_ERC20_PARTIAL_RESTRICTED
}

// prettier-ignore
enum BasicOrderRouteType {
    // 0: provide Ether (or other native token) to receive offered ERC721 item.
    ETH_TO_ERC721,

    // 1: provide Ether (or other native token) to receive offered ERC1155 item.
    ETH_TO_ERC1155,

    // 2: provide ERC20 item to receive offered ERC721 item.
    ERC20_TO_ERC721,

    // 3: provide ERC20 item to receive offered ERC1155 item.
    ERC20_TO_ERC1155,

    // 4: provide ERC721 item to receive offered ERC20 item.
    ERC721_TO_ERC20,

    // 5: provide ERC1155 item to receive offered ERC20 item.
    ERC1155_TO_ERC20
}

// prettier-ignore
enum ItemType {
    // 0: ETH on mainnet, MATIC on polygon, etc.
    NATIVE,

    // 1: ERC20 items (ERC777 and ERC20 analogues could also technically work)
    ERC20,

    // 2: ERC721 items
    ERC721,

    // 3: ERC1155 items
    ERC1155,

    // 4: ERC721 items where a number of tokenIds are supported
    ERC721_WITH_CRITERIA,

    // 5: ERC1155 items where a number of ids are supported
    ERC1155_WITH_CRITERIA
}

// prettier-ignore
enum Side {
    // 0: Items that can be spent
    OFFER,

    // 1: Items that must be received
    CONSIDERATION
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import { OrderType, BasicOrderType, ItemType, Side } from "./ConsiderationEnums.sol";

/**
 * @dev An order contains eleven components: an offerer, a zone (or account that
 *      can cancel the order or restrict who can fulfill the order depending on
 *      the type), the order type (specifying partial fill support as well as
 *      restricted order status), the start and end time, a hash that will be
 *      provided to the zone when validating restricted orders, a salt, a key
 *      corresponding to a given conduit, a counter, and an arbitrary number of
 *      offer items that can be spent along with consideration items that must
 *      be received by their respective recipient.
 */
struct OrderComponents {
    address offerer;
    address zone;
    OfferItem[] offer;
    ConsiderationItem[] consideration;
    OrderType orderType;
    uint256 startTime;
    uint256 endTime;
    bytes32 zoneHash;
    uint256 salt;
    bytes32 conduitKey;
    uint256 counter;
}

/**
 * @dev An offer item has five components: an item type (ETH or other native
 *      tokens, ERC20, ERC721, and ERC1155, as well as criteria-based ERC721 and
 *      ERC1155), a token address, a dual-purpose "identifierOrCriteria"
 *      component that will either represent a tokenId or a merkle root
 *      depending on the item type, and a start and end amount that support
 *      increasing or decreasing amounts over the duration of the respective
 *      order.
 */
struct OfferItem {
    ItemType itemType;
    address token;
    uint256 identifierOrCriteria;
    uint256 startAmount;
    uint256 endAmount;
}

/**
 * @dev A consideration item has the same five components as an offer item and
 *      an additional sixth component designating the required recipient of the
 *      item.
 */
struct ConsiderationItem {
    ItemType itemType;
    address token;
    uint256 identifierOrCriteria;
    uint256 startAmount;
    uint256 endAmount;
    address payable recipient;
}

/**
 * @dev A spent item is translated from a utilized offer item and has four
 *      components: an item type (ETH or other native tokens, ERC20, ERC721, and
 *      ERC1155), a token address, a tokenId, and an amount.
 */
struct SpentItem {
    ItemType itemType;
    address token;
    uint256 identifier;
    uint256 amount;
}

/**
 * @dev A received item is translated from a utilized consideration item and has
 *      the same four components as a spent item, as well as an additional fifth
 *      component designating the required recipient of the item.
 */
struct ReceivedItem {
    ItemType itemType;
    address token;
    uint256 identifier;
    uint256 amount;
    address payable recipient;
}

/**
 * @dev For basic orders involving ETH / native / ERC20 <=> ERC721 / ERC1155
 *      matching, a group of six functions may be called that only requires a
 *      subset of the usual order arguments. Note the use of a "basicOrderType"
 *      enum; this represents both the usual order type as well as the "route"
 *      of the basic order (a simple derivation function for the basic order
 *      type is `basicOrderType = orderType + (4 * basicOrderRoute)`.)
 */
struct BasicOrderParameters {
    // calldata offset
    address considerationToken; // 0x24
    uint256 considerationIdentifier; // 0x44
    uint256 considerationAmount; // 0x64
    address payable offerer; // 0x84
    address zone; // 0xa4
    address offerToken; // 0xc4
    uint256 offerIdentifier; // 0xe4
    uint256 offerAmount; // 0x104
    BasicOrderType basicOrderType; // 0x124
    uint256 startTime; // 0x144
    uint256 endTime; // 0x164
    bytes32 zoneHash; // 0x184
    uint256 salt; // 0x1a4
    bytes32 offererConduitKey; // 0x1c4
    bytes32 fulfillerConduitKey; // 0x1e4
    uint256 totalOriginalAdditionalRecipients; // 0x204
    AdditionalRecipient[] additionalRecipients; // 0x224
    bytes signature; // 0x244
    // Total length, excluding dynamic array data: 0x264 (580)
}

/**
 * @dev Basic orders can supply any number of additional recipients, with the
 *      implied assumption that they are supplied from the offered ETH (or other
 *      native token) or ERC20 token for the order.
 */
struct AdditionalRecipient {
    uint256 amount;
    address payable recipient;
}

/**
 * @dev The full set of order components, with the exception of the counter,
 *      must be supplied when fulfilling more sophisticated orders or groups of
 *      orders. The total number of original consideration items must also be
 *      supplied, as the caller may specify additional consideration items.
 */
struct OrderParameters {
    address offerer; // 0x00
    address zone; // 0x20
    OfferItem[] offer; // 0x40
    ConsiderationItem[] consideration; // 0x60
    OrderType orderType; // 0x80
    uint256 startTime; // 0xa0
    uint256 endTime; // 0xc0
    bytes32 zoneHash; // 0xe0
    uint256 salt; // 0x100
    bytes32 conduitKey; // 0x120
    uint256 totalOriginalConsiderationItems; // 0x140
    // offer.length                          // 0x160
}

/**
 * @dev Orders require a signature in addition to the other order parameters.
 */
struct Order {
    OrderParameters parameters;
    bytes signature;
}

/**
 * @dev Advanced orders include a numerator (i.e. a fraction to attempt to fill)
 *      and a denominator (the total size of the order) in addition to the
 *      signature and other order parameters. It also supports an optional field
 *      for supplying extra data; this data will be provided to the zone if the
 *      order type is restricted and the zone is not the caller, or will be
 *      provided to the offerer as context for contract order types.
 */
struct AdvancedOrder {
    OrderParameters parameters;
    uint120 numerator;
    uint120 denominator;
    bytes signature;
    bytes extraData;
}

/**
 * @dev Orders can be validated (either explicitly via `validate`, or as a
 *      consequence of a full or partial fill), specifically cancelled (they can
 *      also be cancelled in bulk via incrementing a per-zone counter), and
 *      partially or fully filled (with the fraction filled represented by a
 *      numerator and denominator).
 */
struct OrderStatus {
    bool isValidated;
    bool isCancelled;
    uint120 numerator;
    uint120 denominator;
}

/**
 * @dev A criteria resolver specifies an order, side (offer vs. consideration),
 *      and item index. It then provides a chosen identifier (i.e. tokenId)
 *      alongside a merkle proof demonstrating the identifier meets the required
 *      criteria.
 */
struct CriteriaResolver {
    uint256 orderIndex;
    Side side;
    uint256 index;
    uint256 identifier;
    bytes32[] criteriaProof;
}

/**
 * @dev A fulfillment is applied to a group of orders. It decrements a series of
 *      offer and consideration items, then generates a single execution
 *      element. A given fulfillment can be applied to as many offer and
 *      consideration items as desired, but must contain at least one offer and
 *      at least one consideration that match. The fulfillment must also remain
 *      consistent on all key parameters across all offer items (same offerer,
 *      token, type, tokenId, and conduit preference) as well as across all
 *      consideration items (token, type, tokenId, and recipient).
 */
struct Fulfillment {
    FulfillmentComponent[] offerComponents;
    FulfillmentComponent[] considerationComponents;
}

/**
 * @dev Each fulfillment component contains one index referencing a specific
 *      order and another referencing a specific offer or consideration item.
 */
struct FulfillmentComponent {
    uint256 orderIndex;
    uint256 itemIndex;
}

/**
 * @dev An execution is triggered once all consideration items have been zeroed
 *      out. It sends the item in question from the offerer to the item's
 *      recipient, optionally sourcing approvals from either this contract
 *      directly or from the offerer's chosen conduit if one is specified. An
 *      execution is not provided as an argument, but rather is derived via
 *      orders, criteria resolvers, and fulfillments (where the total number of
 *      executions will be less than or equal to the total number of indicated
 *      fulfillments) and returned as part of `matchOrders`.
 */
struct Execution {
    ReceivedItem item;
    address offerer;
    bytes32 conduitKey;
}

/**
 * @dev Restricted orders are validated post-execution by calling validateOrder
 *      on the zone. This struct provides context about the order fulfillment
 *      and any supplied extraData, as well as all order hashes fulfilled in a
 *      call to a match or fulfillAvailable method.
 */
struct ZoneParameters {
    bytes32 orderHash;
    address fulfiller;
    address offerer;
    SpentItem[] offer;
    ReceivedItem[] consideration;
    bytes extraData;
    bytes32[] orderHashes;
    uint256 startTime;
    uint256 endTime;
    bytes32 zoneHash;
}

/**
 * @dev Zones and contract offerers can communicate which schemas they implement
 *      along with any associated metadata related to each schema.
 */
struct Schema {
    uint256 id;
    bytes metadata;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

/**
 * @notice SignedZoneControllerEventsAndErrors contains errors and events
 *         related to deploying and managing new signed zones.
 */
interface SignedZoneControllerEventsAndErrors {
    /**
     * @dev Emit an event whenever a new zone is created.
     *
     * @param zoneAddress The address of the zone.
     * @param zoneName    The name for the zone returned in
     *                    getSeaportMetadata().
     * @param apiEndpoint The API endpoint where orders for this zone can be
     *                    signed.
     * @param documentationURI The URI to the documentation describing the
     *                         behavior of the contract.
     *                    Request and response payloads are defined in SIP-7.
     * @param salt        The salt used to deploy the zone.
     */
    event ZoneCreated(
        address zoneAddress,
        string zoneName,
        string apiEndpoint,
        string documentationURI,
        bytes32 salt
    );

    /**
     * @dev Emit an event whenever zone ownership is transferred.
     *
     * @param zone          The zone for which ownership has been
     *                      transferred.
     * @param previousOwner The previous owner of the zone.
     * @param newOwner      The new owner of the zone.
     */
    event OwnershipTransferred(
        address indexed zone,
        address indexed previousOwner,
        address indexed newOwner
    );

    /**
     * @dev Emit an event whenever a zone owner registers a new potential
     *      owner for that zone.
     *
     * @param newPotentialOwner The new potential owner of the zone.
     */
    event PotentialOwnerUpdated(address indexed newPotentialOwner);

    /**
     * @dev Emit an event when a signer has been updated.
     */
    event SignerUpdated(address signedZone, address signer, bool active);

    /**
     * @dev Revert with an error when attempting to update channels or transfer
     *      ownership of a zone when the caller is not the owner of the
     *      zone in question.
     */
    error CallerIsNotOwner(address zone);

    /**
     * @dev Revert with an error when the caller is not the owner or an active
     *      signer of the signed zone in question.
     */
    error CallerIsNotOwnerOrSigner(address zone);

    /**
     * @dev Revert with an error when attempting to claim ownership of a zone
     *      with a caller that is not the current potential owner for the
     *      zone in question.
     */
    error CallerIsNotNewPotentialOwner(address zone);

    /**
     * @dev Revert with an error when attempting to create a new signed zone
     *      using a salt where the first twenty bytes do not match the address
     *      of the caller or are not set to zero.
     */
    error InvalidCreator();

    /**
     * @dev Revert with an error when attempting to create a new zone when no
     *      initial owner address is supplied.
     */
    error InvalidInitialOwner();

    /**
     * @dev Revert with an error when attempting to set a new potential owner
     *      that is already set.
     */
    error NewPotentialOwnerAlreadySet(address zone, address newPotentialOwner);

    /**
     * @dev Revert with an error when attempting to cancel ownership transfer
     *      when no new potential owner is currently set.
     */
    error NoPotentialOwnerCurrentlySet(address zone);
    /**
     * @dev Revert with an error when attempting to register a new potential
     *      owner and supplying the null address.
     */
    error NewPotentialOwnerIsZeroAddress(address zone);

    /**
     * @dev Revert with an error when attempting to interact with a zone that
     *      does not yet exist.
     */
    error NoZone();

    /**
     * @dev Revert with an error if trying to add a signer that is
     *      already active.
     */
    error SignerAlreadyAdded(address signer);

    /**
     * @dev Revert with an error if a new signer is the zero address.
     */
    error SignerCannotBeZeroAddress();

    /**
     * @dev Revert with an error if a removed signer is trying to be
     *      reauthorized.
     */
    error SignerCannotBeReauthorized(address signer);

    /**
     * @dev Revert with an error if trying to remove a signer that is
     *      not present.
     */
    error SignerNotPresent(address signer);

    /**
     * @dev Revert with an error when attempting to deploy a zone that is
     *      currently deployed.
     */
    error ZoneAlreadyExists(address zone);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

/**
 * @title  SignedZoneControllerInterface
 * @author BCLeFevre
 * @notice SignedZoneControllerInterface enables the deploying of SignedZones.
 *         SignedZones are an implementation of SIP-7 that requires orders
 *         to be signed by an approved signer.
 *         https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-7.md
 *
 */
interface SignedZoneControllerInterface {
    /**
     * @notice Deploy a SignedZone to a precomputed address.
     *
     * @param zoneName    The name for the zone returned in
     *                    getSeaportMetadata().
     * @param apiEndpoint The API endpoint where orders for this zone can be
     *                    signed.
     * @param documentationURI The URI to the documentation describing the
     *                         behavior of the contract.
     *                    Request and response payloads are defined in SIP-7.
     * @param salt        The salt to be used to derive the zone address
     * @param initialOwner The initial owner to set for the new zone.
     *
     * @return derivedAddress The derived address for the zone.
     */
    function createZone(
        string memory zoneName,
        string memory apiEndpoint,
        string memory documentationURI,
        address initialOwner,
        bytes32 salt
    ) external returns (address derivedAddress);

    /**
     * @notice Returns the active signers for the zone.
     *
     * @param signedZone The signed zone to get the active signers for.
     *
     * @return signers The active signers.
     */
    function getActiveSigners(address signedZone)
        external
        view
        returns (address[] memory signers);

    /**
     * @notice Returns additional information about the zone.
     *
     * @param zone The zone to get the additional information for.
     *
     * @return domainSeparator  The domain separator used for signing.
     * @return zoneName         The name of the zone.
     * @return apiEndpoint      The API endpoint for the zone.
     * @return substandards     The substandards supported by the zone.
     * @return documentationURI The documentation URI for the zone.
     */
    function getAdditionalZoneInformation(address zone)
        external
        view
        returns (
            bytes32 domainSeparator,
            string memory zoneName,
            string memory apiEndpoint,
            uint256[] memory substandards,
            string memory documentationURI
        );

    /**
     * @notice Update the API endpoint returned by the supplied zone.
     *         Only the owner or an active signer can call this function.
     *
     * @param signedZone    The signed zone to update the API endpoint for.
     * @param newApiEndpoint The new API endpoint.
     */
    function updateAPIEndpoint(
        address signedZone,
        string calldata newApiEndpoint
    ) external;

    /**
     * @notice Update the signer for a given signed zone.
     *
     * @param signedZone The signed zone to update the signer for.
     * @param signer     The signer to update.
     * @param active     If the signer should be active or not.
     */
    function updateSigner(
        address signedZone,
        address signer,
        bool active
    ) external;

    /**
     * @notice Initiate zone ownership transfer by assigning a new potential
     *         owner for the given zone. Once set, the new potential owner
     *         may call `acceptOwnership` to claim ownership of the zone.
     *         Only the owner of the zone in question may call this function.
     *
     * @param zone The zone for which to initiate ownership transfer.
     * @param newPotentialOwner The new potential owner of the zone.
     */
    function transferOwnership(address zone, address newPotentialOwner)
        external;

    /**
     * @notice Clear the currently set potential owner, if any, from a zone.
     *         Only the owner of the zone in question may call this function.
     *
     * @param zone The zone for which to cancel ownership transfer.
     */
    function cancelOwnershipTransfer(address zone) external;

    /**
     * @notice Accept ownership of a supplied zone. Only accounts that the
     *         current owner has set as the new potential owner may call this
     *         function.
     *
     * @param zone The zone for which to accept ownership.
     */
    function acceptOwnership(address zone) external;

    /**
     * @notice Retrieve the current owner of a deployed zone.
     *
     * @param zone The zone for which to retrieve the associated owner.
     *
     * @return owner The owner of the supplied zone.
     */
    function ownerOf(address zone) external view returns (address owner);

    /**
     * @notice Retrieve the potential owner, if any, for a given zone. The
     *         current owner may set a new potential owner via
     *         `transferOwnership` and that owner may then accept ownership of
     *         the zone in question via `acceptOwnership`.
     *
     * @param zone The zone for which to retrieve the potential owner.
     *
     * @return potentialOwner The potential owner, if any, for the zone.
     */
    function getPotentialOwner(address zone)
        external
        view
        returns (address potentialOwner);

    /**
     * @notice Derive the zone address associated with a salt.
     *
     * @param salt        The salt to be used to derive the zone address
     *
     * @return derivedAddress The derived address of the signed zone.
     */
    function getZone(bytes32 salt)
        external
        view
        returns (address derivedAddress);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

/**
 * @notice SignedZoneEventsAndErrors contains errors and events
 *         related to zone interaction.
 */
interface SignedZoneEventsAndErrors {
    /**
     * @dev Emit an event when a new signer is added.
     */
    event SignerAdded(address signer);

    /**
     * @dev Emit an event when a signer is removed.
     */
    event SignerRemoved(address signer);

    /**
     * @dev Revert with an error if msg.sender is not the owner
     *      or an active signer.
     */
    error OnlyOwnerOrActiveSigner();

    /**
     * @dev Revert with an error when the signature has expired.
     */
    error SignatureExpired(uint256 expiration, bytes32 orderHash);

    /**
     * @dev Revert with an error when attempting to update the signers of a
     *      the zone from a caller that is not the zone's controller.
     */
    error InvalidController();

    /**
     * @dev Revert with an error if supplied order extraData is an invalid
     *      length.
     */
    error InvalidExtraDataLength(bytes32 orderHash);

    /**
     * @dev Revert with an error if the supplied order extraData does not
     *      support the zone's SIP6 version.
     */
    error InvalidSIP6Version(bytes32 orderHash);

    /**
     * @dev Revert with an error if the supplied order extraData does not
     *      support the zone's substandard requirements.
     */
    error InvalidSubstandardSupport(
        string reason,
        uint256 substandardVersion,
        bytes32 orderHash
    );

    /**
     * @dev Revert with an error if the supplied order extraData does not
     *      support the zone's substandard version.
     */
    error InvalidSubstandardVersion(bytes32 orderHash);

    /**
     * @dev Revert with an error if the fulfiller does not match.
     */
    error InvalidFulfiller(
        address expectedFulfiller,
        address actualFulfiller,
        bytes32 orderHash
    );

    /**
     * @dev Revert with an error if the consideration does not match.
     */
    error InvalidConsideration(
        uint256 expectedConsiderationHash,
        uint256 actualConsiderationHash,
        bytes32 orderHash
    );

    /**
     * @dev Revert with an error if the zone parameter encoding is invalid.
     */
    error InvalidZoneParameterEncoding();

    /**
     * @dev Revert with an error when an order is signed with a signer
     *      that is not active.
     */
    error SignerNotActive(address signer, bytes32 orderHash);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

/**
 * @title  SignedZone
 * @author ryanio, BCLeFevre
 * @notice SignedZone is an implementation of SIP-7 that requires orders
 *         to be signed by an approved signer.
 *         https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-7.md
 *
 */
interface SignedZoneInterface {
    /**
     * @notice Update the active status of a signer.
     *
     * @param signer The signer address to update.
     * @param active The new active status of the signer.
     */
    function updateSigner(address signer, bool active) external;

    /**
     * @notice Returns the active signers for the zone.
     *
     * @return signers The active signers.
     */
    function getActiveSigners()
        external
        view
        returns (address[] memory signers);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import { Schema } from "../../lib/ConsiderationStructs.sol";

/**
 * @dev SIP-5: Contract Metadata Interface for Seaport Contracts
 *      https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-5.md
 */
interface SIP5Interface {
    /**
     * @dev An event that is emitted when a SIP-5 compatible contract is deployed.
     */
    event SeaportCompatibleContractDeployed();

    /**
     * @dev Returns Seaport metadata for this contract, returning the
     *      contract name and supported schemas.
     *
     * @return name    The contract name
     * @return schemas The supported SIPs
     */
    function getSeaportMetadata()
        external
        view
        returns (string memory name, Schema[] memory schemas);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

/// @dev ECDSA signature offsets.
uint256 constant ECDSA_MaxLength = 65;
uint256 constant ECDSA_signature_s_offset = 0x40;
uint256 constant ECDSA_signature_v_offset = 0x60;

/// @dev Helpers for memory offsets.
uint256 constant OneWord = 0x20;
uint256 constant TwoWords = 0x40;
uint256 constant ThreeWords = 0x60;
uint256 constant FourWords = 0x80;
uint256 constant FiveWords = 0xa0;
uint256 constant Signature_lower_v = 27;
uint256 constant MaxUint8 = 0xff;
bytes32 constant EIP2098_allButHighestBitMask = (
    0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
);
uint256 constant Ecrecover_precompile = 1;
uint256 constant Ecrecover_args_size = 0x80;
uint256 constant FreeMemoryPointerSlot = 0x40;
uint256 constant ZeroSlot = 0x60;
uint256 constant Slot0x80 = 0x80;

/// @dev The EIP-712 digest offsets.
uint256 constant EIP712_DomainSeparator_offset = 0x02;
uint256 constant EIP712_SignedOrderHash_offset = 0x22;
uint256 constant EIP712_DigestPayload_size = 0x42;
uint256 constant EIP_712_PREFIX = (
    0x1901000000000000000000000000000000000000000000000000000000000000
);

/*
 *  error InvalidController()
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 * Revert buffer is memory[0x1c:0x20]
 */
uint256 constant InvalidController_error_selector = 0x6d5769be;
uint256 constant InvalidController_error_length = 0x04;

/*
 *  error InvalidFulfiller(address expectedFulfiller, address actualFulfiller, bytes32 orderHash)
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 *    - 0x20: expectedFulfiller
 *    - 0x40: actualFullfiller
 *    - 0x60: orderHash
 * Revert buffer is memory[0x1c:0x80]
 */
uint256 constant InvalidFulfiller_error_selector = 0x1bcf9bb7;
uint256 constant InvalidFulfiller_error_expectedFulfiller_ptr = 0x20;
uint256 constant InvalidFulfiller_error_actualFulfiller_ptr = 0x40;
uint256 constant InvalidFulfiller_error_orderHash_ptr = 0x60;
uint256 constant InvalidFulfiller_error_length = 0x64;

/*
 *  error InvalidConsideration(uint256 expectedConsideration, uint256 actualConsideration, bytes32 orderHash)
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 *    - 0x20: expectedConsideration
 *    - 0x40: actualConsideration
 *    - 0x60: orderHash
 * Revert buffer is memory[0x1c:0x80]
 */
uint256 constant InvalidConsideration_error_selector = 0x59cb96d1;
uint256 constant InvalidConsideration_error_expectedConsideration_ptr = 0x20;
uint256 constant InvalidConsideration_error_actualConsideration_ptr = 0x40;
uint256 constant InvalidConsideration_error_orderHash_ptr = 0x60;
uint256 constant InvalidConsideration_error_length = 0x64;

/*
 *  error InvalidZoneParameterEncoding()
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 * Revert buffer is memory[0x1c:0x20]
 */
uint256 constant InvalidZoneParameterEncoding_error_selector = 0x46d5d895;
uint256 constant InvalidZoneParameterEncoding_error_length = 0x04;

/*
 * error InvalidExtraDataLength()
 *   - Defined in SignedZoneEventsAndErrors.sol
 * Memory layout:
 *   - 0x00: Left-padded selector (data begins at 0x1c)
 *   - 0x20: orderHash
 * Revert buffer is memory[0x1c:0x40]
 */
uint256 constant InvalidExtraDataLength_error_selector = 0xd232fd2c;
uint256 constant InvalidExtraDataLength_error_orderHash_ptr = 0x20;
uint256 constant InvalidExtraDataLength_error_length = 0x24;
uint256 constant InvalidExtraDataLength_epected_length = 0x7e;

uint256 constant ExtraData_expiration_offset = 0x35;
uint256 constant ExtraData_substandard_version_byte_offset = 0x7d;
/*
 *  error InvalidSIP6Version()
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 *    - 0x20: orderHash
 * Revert buffer is memory[0x1c:0x40]
 */
uint256 constant InvalidSIP6Version_error_selector = 0x64115774;
uint256 constant InvalidSIP6Version_error_orderHash_ptr = 0x20;
uint256 constant InvalidSIP6Version_error_length = 0x24;

/*
 *  error InvalidSubstandardVersion()
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 *    - 0x20: orderHash
 * Revert buffer is memory[0x1c:0x40]
 */
uint256 constant InvalidSubstandardVersion_error_selector = 0x26787999;
uint256 constant InvalidSubstandardVersion_error_orderHash_ptr = 0x20;
uint256 constant InvalidSubstandardVersion_error_length = 0x24;

/*
 *  error InvalidSubstandardSupport()
 *    - Defined in SignedZoneEventsAndErrors.sol
 *  Memory layout:
 *    - 0x00: Left-padded selector (data begins at 0x1c)
 *    - 0x20: reason
 *    - 0x40: substandardVersion
 *    - 0x60: orderHash
 * Revert buffer is memory[0x1c:0xe0]
 */
uint256 constant InvalidSubstandardSupport_error_selector = 0x2be76224;
uint256 constant InvalidSubstandardSupport_error_reason_offset_ptr = 0x20;
uint256 constant InvalidSubstandardSupport_error_substandard_version_ptr = 0x40;
uint256 constant InvalidSubstandardSupport_error_orderHash_ptr = 0x60;
uint256 constant InvalidSubstandardSupport_error_reason_length_ptr = 0x80;
uint256 constant InvalidSubstandardSupport_error_reason_ptr = 0xa0;
uint256 constant InvalidSubstandardSupport_error_reason_2_ptr = 0xc0;
uint256 constant InvalidSubstandardSupport_error_length = 0xc4;

/*
 * error SignatureExpired()
 *   - Defined in SignedZoneEventsAndErrors.sol
 * Memory layout:
 *   - 0x00: Left-padded selector (data begins at 0x1c)
 *   - 0x20: expiration
 *   - 0x40: orderHash
 * Revert buffer is memory[0x1c:0x60]
 */
uint256 constant SignatureExpired_error_selector = 0x16546071;
uint256 constant SignatureExpired_error_expiration_ptr = 0x20;
uint256 constant SignatureExpired_error_orderHash_ptr = 0x40;
uint256 constant SignatureExpired_error_length = 0x44;

// Zone parameter calldata pointers
uint256 constant Zone_parameters_cdPtr = 0x04;
uint256 constant Zone_parameters_fulfiller_cdPtr = 0x44;
uint256 constant Zone_consideration_head_cdPtr = 0xa4;
uint256 constant Zone_extraData_cdPtr = 0xc4;

// Zone parameter memory pointers
uint256 constant Zone_parameters_ptr = 0x20;

// Zone parameter offsets
uint256 constant Zone_parameters_offset = 0x24;
uint256 constant expectedFulfiller_offset = 0x45;
uint256 constant actualConsideration_offset = 0x84;
uint256 constant expectedConsideration_offset = 0xa2;

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {
    ZoneParameters,
    Schema,
    ReceivedItem
} from "../lib/ConsiderationStructs.sol";

import { ZoneInterface } from "../interfaces/ZoneInterface.sol";

import {
    SignedZoneEventsAndErrors
} from "./interfaces/SignedZoneEventsAndErrors.sol";

import { SIP5Interface } from "./interfaces/SIP5Interface.sol";

import {
    SignedZoneControllerInterface
} from "./interfaces/SignedZoneControllerInterface.sol";

import "./lib/SignedZoneConstants.sol";

/**
 * @title  SignedZone
 * @author ryanio, BCLeFevre
 * @custom:modifiedby Tony Snark
 * @notice SignedZone is an implementation of SIP-7 that requires orders
 *         to be signed by an approved signer.
 *         https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-7.md
 *
 *         Modification:
 *         Removes support for SIP7 sub-standard 1.
 *         Adds support for SIP7 sub-standard 3.
 */
contract SignedZone is SignedZoneEventsAndErrors, ZoneInterface, SIP5Interface {
    /// @dev The zone's controller that is set during deployment.
    address private immutable _controller;

    /// @dev The authorized signers, and if they are active
    mapping(address => bool) private _signers;

    /// @dev The EIP-712 digest parameters.
    bytes32 internal immutable _NAME_HASH = keccak256(bytes("SignedZone"));
    bytes32 internal immutable _VERSION_HASH = keccak256(bytes("1.0.0"));
    // prettier-ignore
    bytes32 internal immutable _EIP_712_DOMAIN_TYPEHASH = keccak256(
          abi.encodePacked(
            "EIP712Domain(",
                "string name,",
                "string version,",
                "uint256 chainId,",
                "address verifyingContract",
            ")"
          )
        );
    // prettier-ignore
    bytes32 internal immutable _SIGNED_ORDER_TYPEHASH = keccak256(
          abi.encodePacked(
            "SignedOrder(",
                "address fulfiller,",
                "uint64 expiration,",
                "bytes32 orderHash,",
                "bytes context",
            ")"
          )
        );

    bytes public constant CONSIDERATION_BYTES =
        // prettier-ignore
        abi.encodePacked(
              "Consideration(",
                  "ReceivedItem[] consideration",
              ")"
        );

    bytes public constant RECEIVED_ITEM_BYTES =
        // prettier-ignore
        abi.encodePacked(
              "ReceivedItem(",
                  "uint8 itemType,",
                  "address token,",
                  "uint256 identifier,",
                  "uint256 amount,",
                  "address recipient",
              ")"
        );

    bytes32 public constant RECEIVED_ITEM_HASHTYPE =
        keccak256(RECEIVED_ITEM_BYTES);

    bytes32 public constant CONSIDERATION_HASHTYPE =
        keccak256(abi.encodePacked(CONSIDERATION_BYTES, RECEIVED_ITEM_BYTES));

    uint256 internal immutable _CHAIN_ID = block.chainid;
    bytes32 internal immutable _DOMAIN_SEPARATOR;

    /**
     * @notice Constructor to deploy the contract.
     */
    constructor() {
        // Set the deployer as the controller.
        _controller = msg.sender;

        // Derive and set the domain separator.
        _DOMAIN_SEPARATOR = _deriveDomainSeparator();

        // Emit an event to signal a SIP-5 contract has been deployed.
        emit SeaportCompatibleContractDeployed();
    }

    /**
     * @notice Check if a given order including extraData is currently valid.
     *
     * @dev This function is called by Seaport whenever any extraData is
     *      provided by the caller.
     *
     * @return validOrderMagicValue A magic value indicating if the order is
     *                              currently valid.
     */
    function validateOrder(ZoneParameters calldata zoneParameters)
        public
        view
        virtual
        override
        returns (bytes4 validOrderMagicValue)
    {
        // Check Zone parameters validity.
        _assertValidZoneParameters();

        // Put the extraData and orderHash on the stack for cheaper access.
        bytes calldata extraData = zoneParameters.extraData;
        bytes32 orderHash = zoneParameters.orderHash;
        uint256 considerationLength;
        // Declare a variable to hold the expiration.
        uint64 expiration;

        // Validate the extraData.
        assembly {
            // Get the length of the extraData.
            let extraDataPtr := add(0x24, calldataload(Zone_extraData_cdPtr))
            let extraDataLength := calldataload(extraDataPtr)

            if iszero(
                eq(extraDataLength, InvalidExtraDataLength_epected_length)
            ) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, InvalidExtraDataLength_error_selector)
                mstore(InvalidExtraDataLength_error_orderHash_ptr, orderHash)
                // revert(abi.encodeWithSignature(
                //   "InvalidExtraDataLength(bytes32)", orderHash)
                // )
                revert(0x1c, InvalidExtraDataLength_error_length)
            }

            // extraData bytes 0-1: SIP-6 version byte (MUST be 0x00)
            let versionByte := shr(248, calldataload(add(extraDataPtr, 0x20)))

            if iszero(eq(versionByte, 0x00)) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, InvalidSIP6Version_error_selector)
                mstore(InvalidSIP6Version_error_orderHash_ptr, orderHash)
                // revert(abi.encodeWithSignature(
                //   "InvalidSIP6Version(bytes32)", orderHash)
                // )
                revert(0x1c, InvalidSIP6Version_error_length)
            }

            // extraData bytes 93-94: Substandard #1 (MUST be 0x00)
            let subStandardVersionByte := shr(
                248,
                calldataload(
                    add(extraDataPtr, ExtraData_substandard_version_byte_offset)
                )
            )

            if iszero(eq(subStandardVersionByte, 0x00)) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, InvalidSubstandardVersion_error_selector)
                mstore(InvalidSubstandardVersion_error_orderHash_ptr, orderHash)
                // revert(abi.encodeWithSignature(
                //   "InvalidSubstandardVersion(bytes32)", orderHash)
                // )
                revert(0x1c, InvalidSubstandardVersion_error_length)
            }

            // extraData bytes 21-29: expiration timestamp (uint64)
            expiration := shr(
                192,
                calldataload(add(extraDataPtr, ExtraData_expiration_offset))
            )
            // Revert if expired.
            if lt(expiration, timestamp()) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, SignatureExpired_error_selector)
                mstore(SignatureExpired_error_expiration_ptr, expiration)
                mstore(SignatureExpired_error_orderHash_ptr, orderHash)
                // revert(abi.encodeWithSignature(
                //   "SignatureExpired(uint256, bytes32)", expiration orderHash)
                // )
                revert(0x1c, SignatureExpired_error_length)
            }

            // // Get the length of the consideration array.
            considerationLength := calldataload(
                add(0x24, calldataload(Zone_consideration_head_cdPtr))
            )
        }

        // extraData bytes 29-93: signature
        // (strictly requires 64 byte compact sig, EIP-2098)
        bytes calldata signature = extraData[29:93];

        // extraData bytes 93-end: context (optional, variable length)
        bytes calldata context = extraData[93:];

        // Check the validity of the Substandard #1 extraData and get the
        // expected fulfiller address.
        address expectedFulfiller = _getExpectedFulfiller(orderHash);

        // Check the validity of the Substandard #1 extraData and get the
        // expected fulfiller address.
        if (considerationLength > 0) {
            _assertValidSubstandard(
                _deriveConsiderationHash(zoneParameters.consideration),
                orderHash
            );
        }

        // Derive the signedOrder hash.
        bytes32 signedOrderHash = _deriveSignedOrderHash(
            expectedFulfiller,
            expiration,
            orderHash,
            context
        );

        // Derive the EIP-712 digest using the domain separator and signedOrder
        // hash.
        bytes32 digest = _deriveEIP712Digest(
            _domainSeparator(),
            signedOrderHash
        );

        // Recover the signer address from the digest and signature.
        address recoveredSigner = _recoverSigner(digest, signature);

        // Revert if the signer is not active.
        if (!_signers[recoveredSigner]) {
            revert SignerNotActive(recoveredSigner, orderHash);
        }
        // Return the selector of validateOrder as the magic value.
        validOrderMagicValue = ZoneInterface.validateOrder.selector;
    }

    /**
     * @dev Returns Seaport metadata for this contract, returning the
     *      contract name and supported schemas.
     *
     * @return name The contract name
     * @return schemas  The supported SIPs
     */
    function getSeaportMetadata()
        external
        view
        override(SIP5Interface, ZoneInterface)
        returns (string memory name, Schema[] memory schemas)
    {
        // Return the supported SIPs.
        schemas = new Schema[](1);
        schemas[0].id = 7;

        // Get the SIP-7 information.
        (
            bytes32 domainSeparator,
            string memory zoneName,
            string memory apiEndpoint,
            uint256[] memory substandards,
            string memory documentationURI
        ) = _sip7Information();

        // Return the zone name.
        name = zoneName;

        // Encode the SIP-7 information.
        schemas[0].metadata = abi.encode(
            domainSeparator,
            apiEndpoint,
            substandards,
            documentationURI
        );
    }

    /**
     * @notice The fallback function is used as a dispatcher for the
     *         `updateSigner`, `getActiveSigners` and `supportsInterface`
     *         functions.
     */
    // prettier-ignore
    fallback(bytes calldata) external payable returns (bytes memory output) {
        // Get the function selector.
        bytes4 selector = msg.sig;

        if (selector == 0xf460590b) {
            // updateSigner(address,bool)

            // Get the signer, and active status.
            address signer = abi.decode(msg.data[4:], (address));
            bool active = abi.decode(msg.data[36:], (bool));

            // Call to update the signer.
            _updateSigner(signer, active);
        } else if (selector == 0xa784b80c) {
            // getActiveSigners()

            // Call the internal function to get the active signers.
            return abi.encode(_getActiveSigners());
        } else if (selector == 0x01ffc9a7) {
            // supportsInterface(bytes4)

            // Get the interface ID.
            bytes4 interfaceId = abi.decode(msg.data[4:], (bytes4));

            // Call the internal function to determine if the interface is
            // supported.
            return abi.encode(_supportsInterface(interfaceId));
        }
    }

    /**
     * @notice Add or remove a signer to the zone.
     *         Only the controller can call this function.
     *
     * @param signer The signer address to add or remove.
     */
    function _updateSigner(address signer, bool active) internal {
        // Only the controller can call this function.
        _assertCallerIsController();
        // Add or remove the signer.
        active ? _addSigner(signer) : _removeSigner(signer);
    }

    /**
     * @notice Add a new signer to the zone.
     *         Only the controller or an active signer can call this function.
     *
     * @param signer The new signer address to add.
     */
    function _addSigner(address signer) internal {
        // Set the signer info.
        _signers[signer] = true;
        // Emit an event that the signer was added.
        emit SignerAdded(signer);
    }

    /**
     * @notice Remove an active signer from the zone.
     *         Only the controller or an active signer can call this function.
     *
     * @param signer The signer address to remove.
     */
    function _removeSigner(address signer) internal {
        // Set the signer's active status to false.
        _signers[signer] = false;

        // Emit an event that the signer was removed.
        emit SignerRemoved(signer);
    }

    /**
     * @notice Returns the active signers for the zone.
     *
     * @return signers The active signers.
     */
    function _getActiveSigners()
        internal
        view
        returns (address[] memory signers)
    {
        // Return the active signers for the zone by calling the controller.
        signers = SignedZoneControllerInterface(_controller).getActiveSigners(
            address(this)
        );
    }

    /**
     * @notice Returns whether the interface is supported.
     *
     * @param interfaceId The interface id to check against.
     */
    function _supportsInterface(bytes4 interfaceId)
        internal
        pure
        returns (bool supportsInterface)
    {
        // Determine if the interface is supported.
        supportsInterface =
            interfaceId == type(SIP5Interface).interfaceId || // SIP-5
            interfaceId == type(ZoneInterface).interfaceId || // ZoneInterface
            interfaceId == 0x01ffc9a7; // ERC-165
    }

    /**
     * @notice Internal call to return the signing information, substandards,
     *         and documentation about the zone.
     *
     * @return domainSeparator  The domain separator used for signing.
     * @return zoneName         The zone name.
     * @return apiEndpoint      The API endpoint for the zone.
     * @return substandards     The substandards supported by the zone.
     * @return documentationURI The documentation URI for the zone.
     */
    function _sip7Information()
        internal
        view
        returns (
            bytes32 domainSeparator,
            string memory zoneName,
            string memory apiEndpoint,
            uint256[] memory substandards,
            string memory documentationURI
        )
    {
        // Return the SIP-7 information.
        domainSeparator = _domainSeparator();

        // Get the SIP-7 information from the controller.
        (
            ,
            zoneName,
            apiEndpoint,
            substandards,
            documentationURI
        ) = SignedZoneControllerInterface(_controller)
            .getAdditionalZoneInformation(address(this));
    }

    /**
     * @dev Derive the signedOrder hash from the orderHash and expiration.
     *
     * @param fulfiller  The expected fulfiller address.
     * @param expiration The signature expiration timestamp.
     * @param orderHash  The order hash.
     * @param context    The optional variable-length context.
     *
     * @return signedOrderHash The signedOrder hash.
     *
     */
    function _deriveSignedOrderHash(
        address fulfiller,
        uint64 expiration,
        bytes32 orderHash,
        bytes calldata context
    ) internal view returns (bytes32 signedOrderHash) {
        // Derive the signed order hash.
        signedOrderHash = keccak256(
            abi.encode(
                _SIGNED_ORDER_TYPEHASH,
                fulfiller,
                expiration,
                orderHash,
                keccak256(context)
            )
        );
    }

    /**
     * @dev Internal view function to return the signer of a signature.
     *
     * @param digest    The digest to verify the signature against.
     * @param signature A signature from the signer indicating that the order
     *                  has been approved.
     *
     * @return recoveredSigner The recovered signer.
     */
    function _recoverSigner(bytes32 digest, bytes memory signature)
        internal
        view
        returns (address recoveredSigner)
    {
        // Utilize assembly to perform optimized signature verification check.
        assembly {
            // Ensure that first word of scratch space is empty.
            mstore(0, 0)

            // Declare value for v signature parameter.
            let v

            // Get the length of the signature.
            let signatureLength := mload(signature)

            // Get the pointer to the value preceding the signature length.
            // This will be used for temporary memory overrides - either the
            // signature head for isValidSignature or the digest for ecrecover.
            let wordBeforeSignaturePtr := sub(signature, OneWord)

            // Cache the current value behind the signature to restore it later.
            let cachedWordBeforeSignature := mload(wordBeforeSignaturePtr)

            // Declare lenDiff + recoveredSigner scope to manage stack pressure.
            {
                // Take the difference between the max ECDSA signature length
                // and the actual signature length. Overflow desired for any
                // values > 65. If the diff is not 0 or 1, it is not a valid
                // ECDSA signature - move on to EIP1271 check.
                let lenDiff := sub(ECDSA_MaxLength, signatureLength)

                // If diff is 0 or 1, it may be an ECDSA signature.
                // Try to recover signer.
                if iszero(gt(lenDiff, 1)) {
                    // Read the signature `s` value.
                    let originalSignatureS := mload(
                        add(signature, ECDSA_signature_s_offset)
                    )

                    // Read the first byte of the word after `s`. If the
                    // signature is 65 bytes, this will be the real `v` value.
                    // If not, it will need to be modified - doing it this way
                    // saves an extra condition.
                    v := byte(
                        0,
                        mload(add(signature, ECDSA_signature_v_offset))
                    )

                    // If lenDiff is 1, parse 64-byte signature as ECDSA.
                    if lenDiff {
                        // Extract yParity from highest bit of vs and add 27 to
                        // get v.
                        v := add(
                            shr(MaxUint8, originalSignatureS),
                            Signature_lower_v
                        )

                        // Extract canonical s from vs, all but the highest bit.
                        // Temporarily overwrite the original `s` value in the
                        // signature.
                        mstore(
                            add(signature, ECDSA_signature_s_offset),
                            and(
                                originalSignatureS,
                                EIP2098_allButHighestBitMask
                            )
                        )
                    }
                    // Temporarily overwrite the signature length with `v` to
                    // conform to the expected input for ecrecover.
                    mstore(signature, v)

                    // Temporarily overwrite the word before the length with
                    // `digest` to conform to the expected input for ecrecover.
                    mstore(wordBeforeSignaturePtr, digest)

                    // Attempt to recover the signer for the given signature. Do
                    // not check the call status as ecrecover will return a null
                    // address if the signature is invalid.
                    pop(
                        staticcall(
                            gas(),
                            Ecrecover_precompile, // Call ecrecover precompile.
                            wordBeforeSignaturePtr, // Use data memory location.
                            Ecrecover_args_size, // Size of digest, v, r, and s.
                            0, // Write result to scratch space.
                            OneWord // Provide size of returned result.
                        )
                    )

                    // Restore cached word before signature.
                    mstore(wordBeforeSignaturePtr, cachedWordBeforeSignature)

                    // Restore cached signature length.
                    mstore(signature, signatureLength)

                    // Restore cached signature `s` value.
                    mstore(
                        add(signature, ECDSA_signature_s_offset),
                        originalSignatureS
                    )

                    // Read the recovered signer from the buffer given as return
                    // space for ecrecover.
                    recoveredSigner := mload(0)
                }
            }

            // Restore the cached values overwritten by selector, digest and
            // signature head.
            mstore(wordBeforeSignaturePtr, cachedWordBeforeSignature)
        }
    }

    /**
     * @dev Internal view function to get the EIP-712 domain separator. If the
     *      chainId matches the chainId set on deployment, the cached domain
     *      separator will be returned; otherwise, it will be derived from
     *      scratch.
     *
     * @return The domain separator.
     */
    function _domainSeparator() internal view returns (bytes32) {
        // prettier-ignore
        return block.chainid == _CHAIN_ID
            ? _DOMAIN_SEPARATOR
            : _deriveDomainSeparator();
    }

    /**
     * @dev Internal view function to derive the EIP-712 domain separator.
     *
     * @return domainSeparator The derived domain separator.
     */
    function _deriveDomainSeparator()
        internal
        view
        returns (bytes32 domainSeparator)
    {
        bytes32 typehash = _EIP_712_DOMAIN_TYPEHASH;
        bytes32 nameHash = _NAME_HASH;
        bytes32 versionHash = _VERSION_HASH;

        // Leverage scratch space and other memory to perform an efficient hash.
        assembly {
            // Retrieve the free memory pointer; it will be replaced afterwards.
            let freeMemoryPointer := mload(FreeMemoryPointerSlot)

            // Retrieve value at 0x80; it will also be replaced afterwards.
            let slot0x80 := mload(Slot0x80)

            // Place typehash, name hash, and version hash at start of memory.
            mstore(0, typehash)
            mstore(OneWord, nameHash)
            mstore(TwoWords, versionHash)

            // Place chainId in the next memory location.
            mstore(ThreeWords, chainid())

            // Place the address of this contract in the next memory location.
            mstore(FourWords, address())

            // Hash relevant region of memory to derive the domain separator.
            domainSeparator := keccak256(0, FiveWords)

            // Restore the free memory pointer.
            mstore(FreeMemoryPointerSlot, freeMemoryPointer)

            // Restore the zero slot to zero.
            mstore(ZeroSlot, 0)

            // Restore the value at 0x80.
            mstore(Slot0x80, slot0x80)
        }
    }

    /**
     * @dev Internal pure function to efficiently derive an digest to sign for
     *      an order in accordance with EIP-712.
     *
     * @param domainSeparator The domain separator.
     * @param signedOrderHash The signedOrder hash.
     *
     * @return digest The digest hash.
     */
    function _deriveEIP712Digest(
        bytes32 domainSeparator,
        bytes32 signedOrderHash
    ) internal pure returns (bytes32 digest) {
        // Leverage scratch space to perform an efficient hash.
        assembly {
            // Place the EIP-712 prefix at the start of scratch space.
            mstore(0, EIP_712_PREFIX)

            // Place the domain separator in the next region of scratch space.
            mstore(EIP712_DomainSeparator_offset, domainSeparator)

            // Place the signed order hash in scratch space, spilling into the
            // first two bytes of the free memory pointer — this should never be
            // set as memory cannot be expanded to that size, and will be
            // zeroed out after the hash is performed.
            mstore(EIP712_SignedOrderHash_offset, signedOrderHash)

            // Hash the relevant region
            digest := keccak256(0, EIP712_DigestPayload_size)

            // Clear out the dirtied bits in the memory pointer.
            mstore(EIP712_SignedOrderHash_offset, 0)
        }
    }

    /**
     * @dev Private view function to revert if the caller is not the
     *      controller.
     */
    function _assertCallerIsController() internal view {
        // Get the controller address to use in the assembly block.
        address controller = _controller;

        assembly {
            // Revert if the caller is not the controller.
            if iszero(eq(caller(), controller)) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, InvalidController_error_selector)
                // revert(abi.encodeWithSignature(
                //   "InvalidController()")
                // )
                revert(0x1c, InvalidController_error_length)
            }
        }
    }

    /**
     * @dev Internal pure function to validate calldata offsets for the
     *      dyanamic type in ZoneParameters. This ensures that functions using
     *      the calldata object normally will be using the same data as the
     *      assembly functions and that values that are bound to a given range
     *      are within that range.
     */
    function _assertValidZoneParameters() internal pure {
        // Utilize assembly in order to read offset data directly from calldata.
        assembly {
            /*
             * Checks:
             * 1. Zone parameters struct offset == 0x20
             */

            // Zone parameters at calldata 0x04 must have offset of 0x20.
            if iszero(
                eq(calldataload(Zone_parameters_cdPtr), Zone_parameters_ptr)
            ) {
                // Store left-padded selector with push4 (reduces bytecode), mem[28:32] = selector
                mstore(0, InvalidZoneParameterEncoding_error_selector)
                // revert(abi.encodeWithSignature("InvalidZoneParameterEncoding()"))
                revert(0x1c, InvalidZoneParameterEncoding_error_length)
            }
        }
    }

    /**
     * @dev Internal pure function to ensure that the context argument for the
     *      supplied extra data follows the substandard #1 format. Returns the
     *      expected fulfiller of the order for deriving the signed order hash.
     *
     * @param orderHash The order hash.
     *
     * @return expectedFulfiller The expected fulfiller of the order.
     */
    function _getExpectedFulfiller(bytes32 orderHash)
        internal
        pure
        returns (address expectedFulfiller)
    {
        // Revert if the expected fulfiller is not the zero address and does
        // not match the actual fulfiller
        assembly {
            // Get the actual fulfiller.
            let actualFulfiller := calldataload(Zone_parameters_fulfiller_cdPtr)
            let extraDataPtr := calldataload(Zone_extraData_cdPtr)

            // Get the expected fulfiller.
            expectedFulfiller := shr(
                96,
                calldataload(add(expectedFulfiller_offset, extraDataPtr))
            )

            // Revert if expected fulfiller is not the zero address and does
            // not match the actual fulfiller.
            if and(
                iszero(iszero(expectedFulfiller)),
                iszero(eq(expectedFulfiller, actualFulfiller))
            ) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, InvalidFulfiller_error_selector)
                mstore(
                    InvalidFulfiller_error_expectedFulfiller_ptr,
                    expectedFulfiller
                )
                mstore(
                    InvalidFulfiller_error_actualFulfiller_ptr,
                    actualFulfiller
                )
                mstore(InvalidFulfiller_error_orderHash_ptr, orderHash)
                // revert(abi.encodeWithSignature(
                //   "InvalidFulfiller(address,address,bytes32)", expectedFulfiller, actualFulfiller, orderHash)
                // )
                revert(0x1c, InvalidFulfiller_error_length)
            }
        }
    }

    /**
     * @dev Internal pure function to ensure that the context argument for the
     *      supplied extra data follows the substandard #1 format. Returns the
     *      expected fulfiller of the order for deriving the signed order hash.
     *
     */
    function _assertValidSubstandard(
        bytes32 considerationHash,
        bytes32 orderHash
    ) internal pure {
        // identifier does not match the actual consideration.
        assembly {
            let extraDataPtr := calldataload(Zone_extraData_cdPtr)
            let considerationPtr := calldataload(Zone_consideration_head_cdPtr)
            // Get the actual consideration.
            let actualConsideration := calldataload(
                add(actualConsideration_offset, considerationPtr)
            )

            // Get the expected consideration.
            let expectedConsiderationHash := calldataload(
                add(expectedConsideration_offset, extraDataPtr) //TODO rename
            )
            // Revert if expected consideration item does not match the actual
            // consideration item.
            if iszero(eq(considerationHash, expectedConsiderationHash)) {
                // Store left-padded selector with push4, mem[28:32] = selector
                mstore(0, InvalidConsideration_error_selector)
                mstore(
                    InvalidConsideration_error_expectedConsideration_ptr,
                    expectedConsiderationHash
                )
                mstore(
                    InvalidConsideration_error_actualConsideration_ptr,
                    actualConsideration
                )
                mstore(InvalidConsideration_error_orderHash_ptr, orderHash)
                // revert(abi.encodeWithSignature(
                //   "InvalidConsideration(uint256,uint256,bytes32)", expectedConsideration, actualConsideration, orderHash)
                // )
                revert(0x1c, InvalidConsideration_error_length)
            }
        }
    }

    /// @dev Calculates consideration hash
    function _deriveConsiderationHash(ReceivedItem[] calldata consideration)
        internal
        pure
        returns (bytes32)
    {
        uint256 numberOfItems = consideration.length;
        bytes32[] memory considerationHashes = new bytes32[](numberOfItems);
        for (uint256 i; i < numberOfItems; ) {
            considerationHashes[i] = _deriveReceivedItemHash(consideration[i]);
            unchecked {
                ++i;
            }
        }
        return
            keccak256(
                abi.encode(
                    CONSIDERATION_HASHTYPE,
                    keccak256(abi.encodePacked(considerationHashes))
                )
            );
    }

    /// @dev Calculates consideration item hash
    function _deriveReceivedItemHash(ReceivedItem calldata receivedItem)
        internal
        pure
        returns (bytes32)
    {
        return
            keccak256(
                abi.encode(
                    RECEIVED_ITEM_HASHTYPE,
                    receivedItem.itemType,
                    receivedItem.token,
                    receivedItem.identifier,
                    receivedItem.amount,
                    receivedItem.recipient
                )
            );
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import { SignedZone } from "./SignedZone.sol";

import { SignedZoneInterface } from "./interfaces/SignedZoneInterface.sol";

import {
    SignedZoneControllerInterface
} from "./interfaces/SignedZoneControllerInterface.sol";

import {
    SignedZoneControllerEventsAndErrors
} from "./interfaces/SignedZoneControllerEventsAndErrors.sol";

import "./lib/SignedZoneConstants.sol";

/**
 * @title  SignedZoneController
 * @author BCLeFevre
 * @notice SignedZoneController enables the deploying of SignedZones.
 *         SignedZones are an implementation of SIP-7 that requires orders to
 *         be signed by  an approved signer.
 *         https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-7.md
 */
contract SignedZoneController is
    SignedZoneControllerInterface,
    SignedZoneControllerEventsAndErrors
{
    /**
     * @dev The struct for storing signer info.
     */
    struct SignerInfo {
        /// @dev If the signer is currently active.
        bool active;
        /// @dev If the signer has been active before.
        bool previouslyActive;
    }

    // Properties used by the signed zone, stored on the controller.
    struct SignedZoneProperties {
        /// @dev Owner of the signed zone (used for permissioned functions)
        address owner;
        /// @dev Potential owner of the signed zone
        address potentialOwner;
        /// @dev The name for this zone returned in getSeaportMetadata().
        string zoneName;
        /// @dev The API endpoint where orders for this zone can be signed.
        ///      Request and response payloads are defined in SIP-7.
        string apiEndpoint;
        /// @dev The URI to the documentation describing the behavior of the
        ///      contract.
        string documentationURI;
        /// @dev The substandards supported by this zone.
        ///      Substandards are defined in SIP-7.
        uint256[] substandards;
        /// @dev Mapping of signer information keyed by signer Address
        mapping(address => SignerInfo) signers;
        /// @dev List of active signers
        address[] activeSignerList;
    }

    /// @dev Mapping of signed zone properties keyed by the Signed Zone
    ///      address.
    mapping(address => SignedZoneProperties) internal _signedZones;

    /// @dev The EIP-712 digest parameters for the SignedZone.
    bytes32 internal immutable _NAME_HASH = keccak256(bytes("SignedZone"));
    bytes32 internal immutable _VERSION_HASH = keccak256(bytes("1.0"));
    // prettier-ignore
    bytes32 internal immutable _EIP_712_DOMAIN_TYPEHASH = keccak256(
          abi.encodePacked(
            "EIP712Domain(",
                "string name,",
                "string version,",
                "uint256 chainId,",
                "address verifyingContract",
            ")"
          )
        );
    uint256 internal immutable _CHAIN_ID = block.chainid;

    // Set the signed zone creation code as an immutable argument.
    bytes32 internal immutable _SIGNED_ZONE_CREATION_CODE_HASH;

    /**
     * @dev Initialize contract
     */
    constructor() {
        // Derive the signed zone creation code hash and set it as an
        // immutable.
        _SIGNED_ZONE_CREATION_CODE_HASH = keccak256(
            type(SignedZone).creationCode
        );
    }

    /**
     * @notice Deploy a SignedZone to a precomputed address.
     *
     * @param zoneName    The name for the zone returned in
     *                    getSeaportMetadata().
     * @param apiEndpoint The API endpoint where orders for this zone can be
     *                    signed.
     * @param documentationURI The URI to the documentation describing the
     *                         behavior of the contract.
     *                    Request and response payloads are defined in SIP-7.
     * @param salt        The salt to be used to derive the zone address
     * @param initialOwner The initial owner to set for the new zone.
     *
     * @return derivedAddress The derived address for the zone.
     */
    function createZone(
        string memory zoneName,
        string memory apiEndpoint,
        string memory documentationURI,
        address initialOwner,
        bytes32 salt
    ) external override returns (address derivedAddress) {
        // Ensure that an initial owner has been supplied.
        if (initialOwner == address(0)) {
            revert InvalidInitialOwner();
        }

        // Ensure the first 20 bytes of the salt are the same as the msg.sender.
        if ((address(uint160(bytes20(salt))) != msg.sender)) {
            // Revert with an error indicating that the creator is invalid.
            revert InvalidCreator();
        }

        // Derive the SignedZone address from the deployer, salt and creation
        // code hash.
        derivedAddress = address(
            uint160(
                uint256(
                    keccak256(
                        abi.encodePacked(
                            bytes1(0xff),
                            address(this),
                            salt,
                            _SIGNED_ZONE_CREATION_CODE_HASH
                        )
                    )
                )
            )
        );

        // TODO : Check runtime code hash to ensure that the zone is not already
        // deployed.
        // Revert if a zone is currently deployed to the derived address.
        if (derivedAddress.code.length != 0) {
            revert ZoneAlreadyExists(derivedAddress);
        }

        // Deploy the zone using the supplied salt.
        new SignedZone{ salt: salt }();

        // Initialize storage variable referencing signed zone properties.
        SignedZoneProperties storage signedZoneProperties = _signedZones[
            derivedAddress
        ];

        // Set the supplied intial owner as the owner of the zone.
        signedZoneProperties.owner = initialOwner;
        // Set the zone name.
        signedZoneProperties.zoneName = zoneName;
        // Set the API endpoint.
        signedZoneProperties.apiEndpoint = apiEndpoint;
        // Set the documentation URI.
        signedZoneProperties.documentationURI = documentationURI;
        // Set the substandard.
        signedZoneProperties.substandards = [3];

        // Emit an event signifying that the zone was created.
        emit ZoneCreated(
            derivedAddress,
            zoneName,
            apiEndpoint,
            documentationURI,
            salt
        );

        // Emit an event indicating that zone ownership has been assigned.
        emit OwnershipTransferred(derivedAddress, address(0), initialOwner);
    }

    /**
     * @notice Initiate zone ownership transfer by assigning a new potential
     *         owner for the given zone. Once set, the new potential owner
     *         may call `acceptOwnership` to claim ownership of the zone.
     *         Only the owner of the zone in question may call this function.
     *
     * @param zone The zone for which to initiate ownership transfer.
     * @param newPotentialOwner The new potential owner of the zone.
     */
    function transferOwnership(address zone, address newPotentialOwner)
        external
        override
    {
        // Ensure the caller is the current owner of the zone in question.
        _assertCallerIsZoneOwner(zone);

        // Ensure the new potential owner is not an invalid address.
        if (newPotentialOwner == address(0)) {
            revert NewPotentialOwnerIsZeroAddress(zone);
        }

        // Ensure the new potential owner is not already set.
        if (newPotentialOwner == _signedZones[zone].potentialOwner) {
            revert NewPotentialOwnerAlreadySet(zone, newPotentialOwner);
        }

        // Emit an event indicating that the potential owner has been updated.
        emit PotentialOwnerUpdated(newPotentialOwner);

        // Set the new potential owner as the potential owner of the zone.
        _signedZones[zone].potentialOwner = newPotentialOwner;
    }

    /**
     * @notice Clear the currently set potential owner, if any, from a zone.
     *         Only the owner of the zone in question may call this function.
     *
     * @param zone The zone for which to cancel ownership transfer.
     */
    function cancelOwnershipTransfer(address zone) external override {
        // Ensure the caller is the current owner of the zone in question.
        _assertCallerIsZoneOwner(zone);

        // Ensure that ownership transfer is currently possible.
        if (_signedZones[zone].potentialOwner == address(0)) {
            revert NoPotentialOwnerCurrentlySet(zone);
        }

        // Emit an event indicating that the potential owner has been cleared.
        emit PotentialOwnerUpdated(address(0));

        // Clear the current new potential owner from the zone.
        _signedZones[zone].potentialOwner = address(0);
    }

    /**
     * @notice Accept ownership of a supplied zone. Only accounts that the
     *         current owner has set as the new potential owner may call this
     *         function.
     *
     * @param zone The zone for which to accept ownership.
     */
    function acceptOwnership(address zone) external override {
        // Ensure that the zone in question exists.
        _assertZoneExists(zone);

        // If caller does not match current potential owner of the zone...
        if (msg.sender != _signedZones[zone].potentialOwner) {
            // Revert, indicating that caller is not current potential owner.
            revert CallerIsNotNewPotentialOwner(zone);
        }

        // Emit an event indicating that the potential owner has been cleared.
        emit PotentialOwnerUpdated(address(0));

        // Clear the current new potential owner from the zone.
        _signedZones[zone].potentialOwner = address(0);

        // Emit an event indicating zone ownership has been transferred.
        emit OwnershipTransferred(zone, _signedZones[zone].owner, msg.sender);

        // Set the caller as the owner of the zone.
        _signedZones[zone].owner = msg.sender;
    }

    /**
     * @notice Retrieve the current owner of a deployed zone.
     *
     * @param zone The zone for which to retrieve the associated owner.
     *
     * @return owner The owner of the supplied zone.
     */
    function ownerOf(address zone)
        external
        view
        override
        returns (address owner)
    {
        // Ensure that the zone in question exists.
        _assertZoneExists(zone);

        // Retrieve the current owner of the zone in question.
        owner = _signedZones[zone].owner;
    }

    /**
     * @notice Retrieve the potential owner, if any, for a given zone. The
     *         current owner may set a new potential owner via
     *         `transferOwnership` and that owner may then accept ownership of
     *         the zone in question via `acceptOwnership`.
     *
     * @param zone The zone for which to retrieve the potential owner.
     *
     * @return potentialOwner The potential owner, if any, for the zone.
     */
    function getPotentialOwner(address zone)
        external
        view
        override
        returns (address potentialOwner)
    {
        // Ensure that the zone in question exists.
        _assertZoneExists(zone);

        // Retrieve the current potential owner of the zone in question.
        potentialOwner = _signedZones[zone].potentialOwner;
    }

    /**
     * @notice Returns the active signers for the zone.
     *
     * @param zone The zone to return the active signers for.
     *
     * @return signers The active signers.
     */
    function getActiveSigners(address zone)
        external
        view
        override
        returns (address[] memory signers)
    {
        // Ensure that the zone in question exists.
        _assertZoneExists(zone);

        // Retrieve storage region where the singers for the signedZone are
        // stored.
        SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

        // Return the active signers for the zone.
        signers = signedZoneProperties.activeSignerList;
    }

    /**
     * @notice Update the API endpoint returned by a zone.
     *         Only the owner or an active signer of the supplied zone can call
     *         this function.
     *
     * @param zone     The signed zone to update the API endpoint for.
     * @param newApiEndpoint The new API endpoint.
     */
    function updateAPIEndpoint(address zone, string calldata newApiEndpoint)
        external
        override
    {
        // Ensure the caller is the owner or an active signer of the signed zone.
        _assertCallerIsZoneOwnerOrSigner(zone);

        // Retrieve storage region where the singers for the signedZone are
        // stored.
        SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

        // Update the API endpoint on the signed zone.
        signedZoneProperties.apiEndpoint = newApiEndpoint;
    }

    /**
     * @notice Add or remove a signer from the supplied zone.
     *         Only the owner or an active signer of the supplied zone can call
     *         this function.
     *
     * @param zone     The signed zone to update the signer permissions for.
     * @param signer   The signer to update the permissions for.
     * @param active   Whether the signer should be active or not.
     */
    function updateSigner(
        address zone,
        address signer,
        bool active
    ) external override {
        // Ensure the caller is the owner or an active signer of the signed zone.
        _assertCallerIsZoneOwnerOrSigner(zone);

        // Retrieve storage region where the singers for the signedZone are
        // stored.
        SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

        // Validate signer permissions.
        _assertSignerPermissions(signedZoneProperties, signer, active);

        // Update the signer on the signed zone.
        SignedZoneInterface(zone).updateSigner(signer, active);

        // Update the signer information.
        signedZoneProperties.signers[signer].active = active;
        signedZoneProperties.signers[signer].previouslyActive = true;
        // Add the signer to the list of signers if they are active.
        if (active) {
            signedZoneProperties.activeSignerList.push(signer);
        } else {
            // Remove the signer from the list of signers.
            for (
                uint256 i = 0;
                i < signedZoneProperties.activeSignerList.length;

            ) {
                if (signedZoneProperties.activeSignerList[i] == signer) {
                    signedZoneProperties.activeSignerList[
                            i
                        ] = signedZoneProperties.activeSignerList[
                        signedZoneProperties.activeSignerList.length - 1
                    ];
                    signedZoneProperties.activeSignerList.pop();
                    break;
                }

                unchecked {
                    ++i;
                }
            }
        }

        // Emit an event signifying that the signer was updated.
        emit SignerUpdated(zone, signer, active);
    }

    /**
     * @notice Derive the zone address associated with a salt.
     *
     * @param salt  The salt to be used to derive the zone address.
     *
     * @return derivedAddress The derived address of the signed zone.
     */
    function getZone(bytes32 salt)
        external
        view
        override
        returns (address derivedAddress)
    {
        // Derive the SignedZone address from deployer, salt and creation code
        // hash.
        derivedAddress = address(
            uint160(
                uint256(
                    keccak256(
                        abi.encodePacked(
                            bytes1(0xff),
                            address(this),
                            salt,
                            _SIGNED_ZONE_CREATION_CODE_HASH
                        )
                    )
                )
            )
        );
    }

    /**
     * @notice External call to return the signing information, substandards,
     *         and documentation about the zone.
     *
     * @return domainSeparator  The domain separator used for signing.
     * @return zoneName         The name of the zone.
     * @return apiEndpoint      The API endpoint for the zone.
     * @return substandards     The substandards supported by the zone.
     * @return documentationURI The documentation URI for the zone.
     */
    function getAdditionalZoneInformation(address zone)
        external
        view
        override
        returns (
            bytes32 domainSeparator,
            string memory zoneName,
            string memory apiEndpoint,
            uint256[] memory substandards,
            string memory documentationURI
        )
    {
        // Ensure the zone exists.
        _assertZoneExists(zone);

        // Return the zone's additional information.
        return _additionalZoneInformation(zone);
    }

    /**
     * @notice Internal call to return the signing information, substandards,
     *         and documentation about the zone.
     *
     * @return domainSeparator  The domain separator used for signing.
     * @return zoneName         The name of the zone.
     * @return apiEndpoint      The API endpoint for the zone.
     * @return substandards     The substandards supported by the zone.
     * @return documentationURI The documentation URI for the zone.
     */
    function _additionalZoneInformation(address zone)
        internal
        view
        returns (
            bytes32 domainSeparator,
            string memory zoneName,
            string memory apiEndpoint,
            uint256[] memory substandards,
            string memory documentationURI
        )
    {
        // Get the zone properties.
        SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

        // Return the SIP-7 information.
        domainSeparator = _domainSeparator(zone);
        zoneName = signedZoneProperties.zoneName;
        apiEndpoint = signedZoneProperties.apiEndpoint;
        substandards = signedZoneProperties.substandards;
        documentationURI = signedZoneProperties.documentationURI;
    }

    /**
     * @dev Internal view function to get the EIP-712 domain separator. If the
     *      chainId matches the chainId set on deployment, the cached domain
     *      separator will be returned; otherwise, it will be derived from
     *      scratch.
     *
     * @return The domain separator.
     */
    function _domainSeparator(address zone) internal view returns (bytes32) {
        // prettier-ignore
        return _deriveDomainSeparator(zone);
    }

    /**
     * @dev Internal view function to derive the EIP-712 domain separator.
     *
     * @return domainSeparator The derived domain separator.
     */
    function _deriveDomainSeparator(address zone)
        internal
        view
        returns (bytes32 domainSeparator)
    {
        bytes32 typehash = _EIP_712_DOMAIN_TYPEHASH;
        bytes32 nameHash = _NAME_HASH;
        bytes32 versionHash = _VERSION_HASH;

        // Leverage scratch space and other memory to perform an efficient hash.
        assembly {
            // Retrieve the free memory pointer; it will be replaced afterwards.
            let freeMemoryPointer := mload(FreeMemoryPointerSlot)

            // Retrieve value at 0x80; it will also be replaced afterwards.
            let slot0x80 := mload(Slot0x80)

            // Place typehash, name hash, and version hash at start of memory.
            mstore(0, typehash)
            mstore(OneWord, nameHash)
            mstore(TwoWords, versionHash)

            // Place chainId in the next memory location.
            mstore(ThreeWords, chainid())

            // Place the address of the signed zone contract in the next memory location.
            mstore(FourWords, zone)

            // Hash relevant region of memory to derive the domain separator.
            domainSeparator := keccak256(0, FiveWords)

            // Restore the free memory pointer.
            mstore(FreeMemoryPointerSlot, freeMemoryPointer)

            // Restore the zero slot to zero.
            mstore(ZeroSlot, 0)

            // Restore the value at 0x80.
            mstore(Slot0x80, slot0x80)
        }
    }

    /**
     * @dev Private view function to revert if the caller is not the owner of a
     *      given zone.
     *
     * @param zone The zone for which to assert ownership.
     */
    function _assertCallerIsZoneOwner(address zone) private view {
        // Ensure that the zone in question exists.
        _assertZoneExists(zone);

        // If the caller does not match the current owner of the zone...
        if (msg.sender != _signedZones[zone].owner) {
            // Revert, indicating that the caller is not the owner.
            revert CallerIsNotOwner(zone);
        }
    }

    /**
     * @dev Private view function to revert if the caller is not the owner or
     *      an active signer of a given zone.
     *
     * @param zone The zone for which to assert ownership.
     */
    function _assertCallerIsZoneOwnerOrSigner(address zone) private view {
        // Ensure that the zone in question exists.
        _assertZoneExists(zone);

        // Initialize storage variable referencing signed zone properties.
        SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

        // Ensure the caller is the owner or an active signer of the signed zone.
        if (
            msg.sender != _signedZones[zone].owner &&
            !signedZoneProperties.signers[msg.sender].active
        ) {
            // Revert, indicating that the caller is not the owner.
            revert CallerIsNotOwnerOrSigner(zone);
        }
    }

    /**
     * @dev Private view function to revert if a given zone does not exist.
     *
     * @param zone The zone for which to assert existence.
     */
    function _assertZoneExists(address zone) private view {
        // Attempt to retrieve a the owner for the zone in question.
        if (_signedZones[zone].owner == address(0)) {
            // Revert if no ownerwas located.
            revert NoZone();
        }
    }

    /**
     * @dev Private view function to revert if a signer being added to a zone
     *      is the zero address or the signer already exists, or the signer was
     *      previously authorized.  If the signer is being removed, the
     *      function will revert if the signer is not active.
     *
     * @param signedZoneProperties The signed zone properties for the zone.
     * @param signer The signer to add or remove.
     * @param active Whether the signer is being added or removed.
     */
    function _assertSignerPermissions(
        SignedZoneProperties storage signedZoneProperties,
        address signer,
        bool active
    ) private view {
        // If the signer is being added...
        if (active) {
            // Do not allow the zero address to be added as a signer.
            if (signer == address(0)) {
                revert SignerCannotBeZeroAddress();
            }

            // Revert if the signer is already added.
            if (signedZoneProperties.signers[signer].active) {
                revert SignerAlreadyAdded(signer);
            }

            // Revert if the signer was previously authorized.
            if (signedZoneProperties.signers[signer].previouslyActive) {
                revert SignerCannotBeReauthorized(signer);
            }
        } else {
            // Revert if the signer is not active.
            if (!signedZoneProperties.signers[signer].active) {
                revert SignerNotPresent(signer);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {SignedZoneV16} from "./SignedZoneV16.sol";

import {SignedZoneInterface} from "./interfaces/SignedZoneInterface.sol";

import {SignedZoneControllerInterface} from "./interfaces/SignedZoneControllerInterface.sol";

import {SignedZoneControllerEventsAndErrors} from "./interfaces/SignedZoneControllerEventsAndErrors.sol";

import "./lib/SignedZoneConstants.sol";

/**
 * @title  SignedZoneControllerV16
 * @author BCLeFevre
 * @notice SignedZoneControllerV16 enables the deploying of SignedZones.
 *         SignedZones are an implementation of SIP-7 that requires orders to
 *         be signed by  an approved signer.
 *         https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-7.md
 */
contract SignedZoneControllerV16 is
  SignedZoneControllerInterface,
  SignedZoneControllerEventsAndErrors
{
  /**
   * @dev The struct for storing signer info.
   */
  struct SignerInfo {
    /// @dev If the signer is currently active.
    bool active;
    /// @dev If the signer has been active before.
    bool previouslyActive;
  }

  // Properties used by the signed zone, stored on the controller.
  struct SignedZoneProperties {
    /// @dev Owner of the signed zone (used for permissioned functions)
    address owner;
    /// @dev Potential owner of the signed zone
    address potentialOwner;
    /// @dev The name for this zone returned in getSeaportMetadata().
    string zoneName;
    /// @dev The API endpoint where orders for this zone can be signed.
    ///      Request and response payloads are defined in SIP-7.
    string apiEndpoint;
    /// @dev The URI to the documentation describing the behavior of the
    ///      contract.
    string documentationURI;
    /// @dev The substandards supported by this zone.
    ///      Substandards are defined in SIP-7.
    uint256[] substandards;
    /// @dev Mapping of signer information keyed by signer Address
    mapping(address => SignerInfo) signers;
    /// @dev List of active signers
    address[] activeSignerList;
  }

  /// @dev Mapping of signed zone properties keyed by the Signed Zone
  ///      address.
  mapping(address => SignedZoneProperties) internal _signedZones;

  /// @dev The EIP-712 digest parameters for the SignedZone.
  bytes32 internal immutable _NAME_HASH = keccak256(bytes("SignedZone"));
  bytes32 internal immutable _VERSION_HASH = keccak256(bytes("1.0"));
  // prettier-ignore
  bytes32 internal immutable _EIP_712_DOMAIN_TYPEHASH = keccak256(
          abi.encodePacked(
            "EIP712Domain(",
                "string name,",
                "string version,",
                "uint256 chainId,",
                "address verifyingContract",
            ")"
          )
        );
  uint256 internal immutable _CHAIN_ID = block.chainid;

  // Set the signed zone creation code as an immutable argument.
  bytes32 internal immutable _SIGNED_ZONE_CREATION_CODE_HASH;

  /**
   * @dev Initialize contract
   */
  constructor() {
    // Derive the signed zone creation code hash and set it as an
    // immutable.
    _SIGNED_ZONE_CREATION_CODE_HASH = keccak256(type(SignedZoneV16).creationCode);
  }

  /**
   * @notice Deploy a SignedZoneV16 to a precomputed address.
   *
   * @param zoneName    The name for the zone returned in
   *                    getSeaportMetadata().
   * @param apiEndpoint The API endpoint where orders for this zone can be
   *                    signed.
   * @param documentationURI The URI to the documentation describing the
   *                         behavior of the contract.
   *                    Request and response payloads are defined in SIP-7.
   * @param salt        The salt to be used to derive the zone address
   * @param initialOwner The initial owner to set for the new zone.
   *
   * @return derivedAddress The derived address for the zone.
   */
  function createZone(
    string memory zoneName,
    string memory apiEndpoint,
    string memory documentationURI,
    address initialOwner,
    bytes32 salt
  ) external override returns (address derivedAddress) {
    // Ensure that an initial owner has been supplied.
    if (initialOwner == address(0)) {
      revert InvalidInitialOwner();
    }

    // Ensure the first 20 bytes of the salt are the same as the msg.sender.
    if ((address(uint160(bytes20(salt))) != msg.sender)) {
      // Revert with an error indicating that the creator is invalid.
      revert InvalidCreator();
    }

    // Derive the SignedZoneV16 address from the deployer, salt and creation
    // code hash.
    derivedAddress = address(
      uint160(
        uint256(
          keccak256(
            abi.encodePacked(bytes1(0xff), address(this), salt, _SIGNED_ZONE_CREATION_CODE_HASH)
          )
        )
      )
    );

    // TODO : Check runtime code hash to ensure that the zone is not already
    // deployed.
    // Revert if a zone is currently deployed to the derived address.
    if (derivedAddress.code.length != 0) {
      revert ZoneAlreadyExists(derivedAddress);
    }

    // Deploy the zone using the supplied salt.
    new SignedZoneV16{salt: salt}();

    // Initialize storage variable referencing signed zone properties.
    SignedZoneProperties storage signedZoneProperties = _signedZones[derivedAddress];

    // Set the supplied intial owner as the owner of the zone.
    signedZoneProperties.owner = initialOwner;
    // Set the zone name.
    signedZoneProperties.zoneName = zoneName;
    // Set the API endpoint.
    signedZoneProperties.apiEndpoint = apiEndpoint;
    // Set the documentation URI.
    signedZoneProperties.documentationURI = documentationURI;
    // Set the substandard.
    signedZoneProperties.substandards = [3];

    // Emit an event signifying that the zone was created.
    emit ZoneCreated(derivedAddress, zoneName, apiEndpoint, documentationURI, salt);

    // Emit an event indicating that zone ownership has been assigned.
    emit OwnershipTransferred(derivedAddress, address(0), initialOwner);
  }

  /**
   * @notice Initiate zone ownership transfer by assigning a new potential
   *         owner for the given zone. Once set, the new potential owner
   *         may call `acceptOwnership` to claim ownership of the zone.
   *         Only the owner of the zone in question may call this function.
   *
   * @param zone The zone for which to initiate ownership transfer.
   * @param newPotentialOwner The new potential owner of the zone.
   */
  function transferOwnership(address zone, address newPotentialOwner) external override {
    // Ensure the caller is the current owner of the zone in question.
    _assertCallerIsZoneOwner(zone);

    // Ensure the new potential owner is not an invalid address.
    if (newPotentialOwner == address(0)) {
      revert NewPotentialOwnerIsZeroAddress(zone);
    }

    // Ensure the new potential owner is not already set.
    if (newPotentialOwner == _signedZones[zone].potentialOwner) {
      revert NewPotentialOwnerAlreadySet(zone, newPotentialOwner);
    }

    // Emit an event indicating that the potential owner has been updated.
    emit PotentialOwnerUpdated(newPotentialOwner);

    // Set the new potential owner as the potential owner of the zone.
    _signedZones[zone].potentialOwner = newPotentialOwner;
  }

  /**
   * @notice Clear the currently set potential owner, if any, from a zone.
   *         Only the owner of the zone in question may call this function.
   *
   * @param zone The zone for which to cancel ownership transfer.
   */
  function cancelOwnershipTransfer(address zone) external override {
    // Ensure the caller is the current owner of the zone in question.
    _assertCallerIsZoneOwner(zone);

    // Ensure that ownership transfer is currently possible.
    if (_signedZones[zone].potentialOwner == address(0)) {
      revert NoPotentialOwnerCurrentlySet(zone);
    }

    // Emit an event indicating that the potential owner has been cleared.
    emit PotentialOwnerUpdated(address(0));

    // Clear the current new potential owner from the zone.
    _signedZones[zone].potentialOwner = address(0);
  }

  /**
   * @notice Accept ownership of a supplied zone. Only accounts that the
   *         current owner has set as the new potential owner may call this
   *         function.
   *
   * @param zone The zone for which to accept ownership.
   */
  function acceptOwnership(address zone) external override {
    // Ensure that the zone in question exists.
    _assertZoneExists(zone);

    // If caller does not match current potential owner of the zone...
    if (msg.sender != _signedZones[zone].potentialOwner) {
      // Revert, indicating that caller is not current potential owner.
      revert CallerIsNotNewPotentialOwner(zone);
    }

    // Emit an event indicating that the potential owner has been cleared.
    emit PotentialOwnerUpdated(address(0));

    // Clear the current new potential owner from the zone.
    _signedZones[zone].potentialOwner = address(0);

    // Emit an event indicating zone ownership has been transferred.
    emit OwnershipTransferred(zone, _signedZones[zone].owner, msg.sender);

    // Set the caller as the owner of the zone.
    _signedZones[zone].owner = msg.sender;
  }

  /**
   * @notice Retrieve the current owner of a deployed zone.
   *
   * @param zone The zone for which to retrieve the associated owner.
   *
   * @return owner The owner of the supplied zone.
   */
  function ownerOf(address zone) external view override returns (address owner) {
    // Ensure that the zone in question exists.
    _assertZoneExists(zone);

    // Retrieve the current owner of the zone in question.
    owner = _signedZones[zone].owner;
  }

  /**
   * @notice Retrieve the potential owner, if any, for a given zone. The
   *         current owner may set a new potential owner via
   *         `transferOwnership` and that owner may then accept ownership of
   *         the zone in question via `acceptOwnership`.
   *
   * @param zone The zone for which to retrieve the potential owner.
   *
   * @return potentialOwner The potential owner, if any, for the zone.
   */
  function getPotentialOwner(address zone) external view override returns (address potentialOwner) {
    // Ensure that the zone in question exists.
    _assertZoneExists(zone);

    // Retrieve the current potential owner of the zone in question.
    potentialOwner = _signedZones[zone].potentialOwner;
  }

  /**
   * @notice Returns the active signers for the zone.
   *
   * @param zone The zone to return the active signers for.
   *
   * @return signers The active signers.
   */
  function getActiveSigners(
    address zone
  ) external view override returns (address[] memory signers) {
    // Ensure that the zone in question exists.
    _assertZoneExists(zone);

    // Retrieve storage region where the singers for the signedZone are
    // stored.
    SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

    // Return the active signers for the zone.
    signers = signedZoneProperties.activeSignerList;
  }

  /**
   * @notice Update the API endpoint returned by a zone.
   *         Only the owner or an active signer of the supplied zone can call
   *         this function.
   *
   * @param zone     The signed zone to update the API endpoint for.
   * @param newApiEndpoint The new API endpoint.
   */
  function updateAPIEndpoint(address zone, string calldata newApiEndpoint) external override {
    // Ensure the caller is the owner or an active signer of the signed zone.
    _assertCallerIsZoneOwnerOrSigner(zone);

    // Retrieve storage region where the singers for the signedZone are
    // stored.
    SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

    // Update the API endpoint on the signed zone.
    signedZoneProperties.apiEndpoint = newApiEndpoint;
  }

  /**
   * @notice Add or remove a signer from the supplied zone.
   *         Only the owner or an active signer of the supplied zone can call
   *         this function.
   *
   * @param zone     The signed zone to update the signer permissions for.
   * @param signer   The signer to update the permissions for.
   * @param active   Whether the signer should be active or not.
   */
  function updateSigner(address zone, address signer, bool active) external override {
    // Ensure the caller is the owner or an active signer of the signed zone.
    _assertCallerIsZoneOwnerOrSigner(zone);

    // Retrieve storage region where the singers for the signedZone are
    // stored.
    SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

    // Validate signer permissions.
    _assertSignerPermissions(signedZoneProperties, signer, active);

    // Update the signer on the signed zone.
    SignedZoneInterface(zone).updateSigner(signer, active);

    // Update the signer information.
    signedZoneProperties.signers[signer].active = active;
    signedZoneProperties.signers[signer].previouslyActive = true;
    // Add the signer to the list of signers if they are active.
    if (active) {
      signedZoneProperties.activeSignerList.push(signer);
    } else {
      // Remove the signer from the list of signers.
      for (uint256 i = 0; i < signedZoneProperties.activeSignerList.length; ) {
        if (signedZoneProperties.activeSignerList[i] == signer) {
          signedZoneProperties.activeSignerList[i] = signedZoneProperties.activeSignerList[
            signedZoneProperties.activeSignerList.length - 1
          ];
          signedZoneProperties.activeSignerList.pop();
          break;
        }

        unchecked {
          ++i;
        }
      }
    }

    // Emit an event signifying that the signer was updated.
    emit SignerUpdated(zone, signer, active);
  }

  /**
   * @notice Derive the zone address associated with a salt.
   *
   * @param salt  The salt to be used to derive the zone address.
   *
   * @return derivedAddress The derived address of the signed zone.
   */
  function getZone(bytes32 salt) external view override returns (address derivedAddress) {
    // Derive the SignedZoneV16 address from deployer, salt and creation code
    // hash.
    derivedAddress = address(
      uint160(
        uint256(
          keccak256(
            abi.encodePacked(bytes1(0xff), address(this), salt, _SIGNED_ZONE_CREATION_CODE_HASH)
          )
        )
      )
    );
  }

  /**
   * @notice External call to return the signing information, substandards,
   *         and documentation about the zone.
   *
   * @return domainSeparator  The domain separator used for signing.
   * @return zoneName         The name of the zone.
   * @return apiEndpoint      The API endpoint for the zone.
   * @return substandards     The substandards supported by the zone.
   * @return documentationURI The documentation URI for the zone.
   */
  function getAdditionalZoneInformation(
    address zone
  )
    external
    view
    override
    returns (
      bytes32 domainSeparator,
      string memory zoneName,
      string memory apiEndpoint,
      uint256[] memory substandards,
      string memory documentationURI
    )
  {
    // Ensure the zone exists.
    _assertZoneExists(zone);

    // Return the zone's additional information.
    return _additionalZoneInformation(zone);
  }

  /**
   * @notice Internal call to return the signing information, substandards,
   *         and documentation about the zone.
   *
   * @return domainSeparator  The domain separator used for signing.
   * @return zoneName         The name of the zone.
   * @return apiEndpoint      The API endpoint for the zone.
   * @return substandards     The substandards supported by the zone.
   * @return documentationURI The documentation URI for the zone.
   */
  function _additionalZoneInformation(
    address zone
  )
    internal
    view
    returns (
      bytes32 domainSeparator,
      string memory zoneName,
      string memory apiEndpoint,
      uint256[] memory substandards,
      string memory documentationURI
    )
  {
    // Get the zone properties.
    SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

    // Return the SIP-7 information.
    domainSeparator = _domainSeparator(zone);
    zoneName = signedZoneProperties.zoneName;
    apiEndpoint = signedZoneProperties.apiEndpoint;
    substandards = signedZoneProperties.substandards;
    documentationURI = signedZoneProperties.documentationURI;
  }

  /**
   * @dev Internal view function to get the EIP-712 domain separator. If the
   *      chainId matches the chainId set on deployment, the cached domain
   *      separator will be returned; otherwise, it will be derived from
   *      scratch.
   *
   * @return The domain separator.
   */
  function _domainSeparator(address zone) internal view returns (bytes32) {
    // prettier-ignore
    return _deriveDomainSeparator(zone);
  }

  /**
   * @dev Internal view function to derive the EIP-712 domain separator.
   *
   * @return domainSeparator The derived domain separator.
   */
  function _deriveDomainSeparator(address zone) internal view returns (bytes32 domainSeparator) {
    bytes32 typehash = _EIP_712_DOMAIN_TYPEHASH;
    bytes32 nameHash = _NAME_HASH;
    bytes32 versionHash = _VERSION_HASH;

    // Leverage scratch space and other memory to perform an efficient hash.
    assembly {
      // Retrieve the free memory pointer; it will be replaced afterwards.
      let freeMemoryPointer := mload(FreeMemoryPointerSlot)

      // Retrieve value at 0x80; it will also be replaced afterwards.
      let slot0x80 := mload(Slot0x80)

      // Place typehash, name hash, and version hash at start of memory.
      mstore(0, typehash)
      mstore(OneWord, nameHash)
      mstore(TwoWords, versionHash)

      // Place chainId in the next memory location.
      mstore(ThreeWords, chainid())

      // Place the address of the signed zone contract in the next memory location.
      mstore(FourWords, zone)

      // Hash relevant region of memory to derive the domain separator.
      domainSeparator := keccak256(0, FiveWords)

      // Restore the free memory pointer.
      mstore(FreeMemoryPointerSlot, freeMemoryPointer)

      // Restore the zero slot to zero.
      mstore(ZeroSlot, 0)

      // Restore the value at 0x80.
      mstore(Slot0x80, slot0x80)
    }
  }

  /**
   * @dev Private view function to revert if the caller is not the owner of a
   *      given zone.
   *
   * @param zone The zone for which to assert ownership.
   */
  function _assertCallerIsZoneOwner(address zone) private view {
    // Ensure that the zone in question exists.
    _assertZoneExists(zone);

    // If the caller does not match the current owner of the zone...
    if (msg.sender != _signedZones[zone].owner) {
      // Revert, indicating that the caller is not the owner.
      revert CallerIsNotOwner(zone);
    }
  }

  /**
   * @dev Private view function to revert if the caller is not the owner or
   *      an active signer of a given zone.
   *
   * @param zone The zone for which to assert ownership.
   */
  function _assertCallerIsZoneOwnerOrSigner(address zone) private view {
    // Ensure that the zone in question exists.
    _assertZoneExists(zone);

    // Initialize storage variable referencing signed zone properties.
    SignedZoneProperties storage signedZoneProperties = _signedZones[zone];

    // Ensure the caller is the owner or an active signer of the signed zone.
    if (
      msg.sender != _signedZones[zone].owner && !signedZoneProperties.signers[msg.sender].active
    ) {
      // Revert, indicating that the caller is not the owner.
      revert CallerIsNotOwnerOrSigner(zone);
    }
  }

  /**
   * @dev Private view function to revert if a given zone does not exist.
   *
   * @param zone The zone for which to assert existence.
   */
  function _assertZoneExists(address zone) private view {
    // Attempt to retrieve a the owner for the zone in question.
    if (_signedZones[zone].owner == address(0)) {
      // Revert if no ownerwas located.
      revert NoZone();
    }
  }

  /**
   * @dev Private view function to revert if a signer being added to a zone
   *      is the zero address or the signer already exists, or the signer was
   *      previously authorized.  If the signer is being removed, the
   *      function will revert if the signer is not active.
   *
   * @param signedZoneProperties The signed zone properties for the zone.
   * @param signer The signer to add or remove.
   * @param active Whether the signer is being added or removed.
   */
  function _assertSignerPermissions(
    SignedZoneProperties storage signedZoneProperties,
    address signer,
    bool active
  ) private view {
    // If the signer is being added...
    if (active) {
      // Do not allow the zero address to be added as a signer.
      if (signer == address(0)) {
        revert SignerCannotBeZeroAddress();
      }

      // Revert if the signer is already added.
      if (signedZoneProperties.signers[signer].active) {
        revert SignerAlreadyAdded(signer);
      }

      // Revert if the signer was previously authorized.
      if (signedZoneProperties.signers[signer].previouslyActive) {
        revert SignerCannotBeReauthorized(signer);
      }
    } else {
      // Revert if the signer is not active.
      if (!signedZoneProperties.signers[signer].active) {
        revert SignerNotPresent(signer);
      }
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {ZoneParameters, Schema, ReceivedItem} from "../lib/ConsiderationStructs.sol";

import {ZoneInterfaceV16} from "../interfaces/ZoneInterfaceV16.sol";

import {SignedZoneEventsAndErrors} from "./interfaces/SignedZoneEventsAndErrors.sol";

import {SIP5Interface} from "./interfaces/SIP5Interface.sol";

import {SignedZoneControllerInterface} from "./interfaces/SignedZoneControllerInterface.sol";

import "./lib/SignedZoneConstants.sol";

/**
 * @title  SignedZoneV16
 * @author ryanio, BCLeFevre
 * @custom:modifiedby Tony Snark
 * @notice SignedZoneV16 is an implementation of SIP-7 that requires orders
 *         to be signed by an approved signer.
 *         https://github.com/ProjectOpenSea/SIPs/blob/main/SIPS/sip-7.md
 *
 *         Modification:
 *         Removes support for SIP7 sub-standard 1.
 *         Adds support for SIP7 sub-standard 3.
 */
contract SignedZoneV16 is SignedZoneEventsAndErrors, ZoneInterfaceV16, SIP5Interface {
  /// @dev The zone's controller that is set during deployment.
  address private immutable _controller;

  /// @dev The authorized signers, and if they are active
  mapping(address => bool) private _signers;

  /// @dev The EIP-712 digest parameters.
  bytes32 internal immutable _NAME_HASH = keccak256(bytes("SignedZone"));
  bytes32 internal immutable _VERSION_HASH = keccak256(bytes("1.0.0"));
  // prettier-ignore
  bytes32 internal immutable _EIP_712_DOMAIN_TYPEHASH = keccak256(
          abi.encodePacked(
            "EIP712Domain(",
                "string name,",
                "string version,",
                "uint256 chainId,",
                "address verifyingContract",
            ")"
          )
        );
  // prettier-ignore
  bytes32 internal immutable _SIGNED_ORDER_TYPEHASH = keccak256(
          abi.encodePacked(
            "SignedOrder(",
                "address fulfiller,",
                "uint64 expiration,",
                "bytes32 orderHash,",
                "bytes context",
            ")"
          )
        );

  bytes public constant CONSIDERATION_BYTES =
    // prettier-ignore
    abi.encodePacked(
              "Consideration(",
                  "ReceivedItem[] consideration",
              ")"
        );

  bytes public constant RECEIVED_ITEM_BYTES =
    // prettier-ignore
    abi.encodePacked(
              "ReceivedItem(",
                  "uint8 itemType,",
                  "address token,",
                  "uint256 identifier,",
                  "uint256 amount,",
                  "address recipient",
              ")"
        );

  bytes32 public constant RECEIVED_ITEM_HASHTYPE = keccak256(RECEIVED_ITEM_BYTES);

  bytes32 public constant CONSIDERATION_HASHTYPE =
    keccak256(abi.encodePacked(CONSIDERATION_BYTES, RECEIVED_ITEM_BYTES));

  uint256 internal immutable _CHAIN_ID = block.chainid;
  bytes32 internal immutable _DOMAIN_SEPARATOR;

  /**
   * @notice Constructor to deploy the contract.
   */
  constructor() {
    // Set the deployer as the controller.
    _controller = msg.sender;

    // Derive and set the domain separator.
    _DOMAIN_SEPARATOR = _deriveDomainSeparator();

    // Emit an event to signal a SIP-5 contract has been deployed.
    emit SeaportCompatibleContractDeployed();
  }

  /**
   * @dev Authorizes an order before any token fulfillments from any order have been executed by Seaport.
   *
   * @return authorizedOrderMagicValue The magic value that indicates a valid
   *                              order.
   */
  function authorizeOrder(
    ZoneParameters calldata
  ) public view virtual override returns (bytes4 authorizedOrderMagicValue) {
    return this.authorizeOrder.selector;
  }

  /**
   * @notice Check if a given order including extraData is currently valid.
   *
   * @dev This function is called by Seaport whenever any extraData is
   *      provided by the caller.
   *
   * @return validOrderMagicValue A magic value indicating if the order is
   *                              currently valid.
   */
  function validateOrder(
    ZoneParameters calldata zoneParameters
  ) public view virtual override returns (bytes4 validOrderMagicValue) {
    // Check Zone parameters validity.
    _assertValidZoneParameters();

    // Put the extraData and orderHash on the stack for cheaper access.
    bytes calldata extraData = zoneParameters.extraData;
    bytes32 orderHash = zoneParameters.orderHash;
    uint256 considerationLength;
    // Declare a variable to hold the expiration.
    uint64 expiration;

    // Validate the extraData.
    assembly {
      // Get the length of the extraData.
      let extraDataPtr := add(0x24, calldataload(Zone_extraData_cdPtr))
      let extraDataLength := calldataload(extraDataPtr)

      if iszero(eq(extraDataLength, InvalidExtraDataLength_epected_length)) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, InvalidExtraDataLength_error_selector)
        mstore(InvalidExtraDataLength_error_orderHash_ptr, orderHash)
        // revert(abi.encodeWithSignature(
        //   "InvalidExtraDataLength(bytes32)", orderHash)
        // )
        revert(0x1c, InvalidExtraDataLength_error_length)
      }

      // extraData bytes 0-1: SIP-6 version byte (MUST be 0x00)
      let versionByte := shr(248, calldataload(add(extraDataPtr, 0x20)))

      if iszero(eq(versionByte, 0x00)) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, InvalidSIP6Version_error_selector)
        mstore(InvalidSIP6Version_error_orderHash_ptr, orderHash)
        // revert(abi.encodeWithSignature(
        //   "InvalidSIP6Version(bytes32)", orderHash)
        // )
        revert(0x1c, InvalidSIP6Version_error_length)
      }

      // extraData bytes 93-94: Substandard #1 (MUST be 0x00)
      let subStandardVersionByte := shr(
        248,
        calldataload(add(extraDataPtr, ExtraData_substandard_version_byte_offset))
      )

      if iszero(eq(subStandardVersionByte, 0x00)) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, InvalidSubstandardVersion_error_selector)
        mstore(InvalidSubstandardVersion_error_orderHash_ptr, orderHash)
        // revert(abi.encodeWithSignature(
        //   "InvalidSubstandardVersion(bytes32)", orderHash)
        // )
        revert(0x1c, InvalidSubstandardVersion_error_length)
      }

      // extraData bytes 21-29: expiration timestamp (uint64)
      expiration := shr(192, calldataload(add(extraDataPtr, ExtraData_expiration_offset)))
      // Revert if expired.
      if lt(expiration, timestamp()) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, SignatureExpired_error_selector)
        mstore(SignatureExpired_error_expiration_ptr, expiration)
        mstore(SignatureExpired_error_orderHash_ptr, orderHash)
        // revert(abi.encodeWithSignature(
        //   "SignatureExpired(uint256, bytes32)", expiration orderHash)
        // )
        revert(0x1c, SignatureExpired_error_length)
      }

      // // Get the length of the consideration array.
      considerationLength := calldataload(add(0x24, calldataload(Zone_consideration_head_cdPtr)))
    }

    // extraData bytes 29-93: signature
    // (strictly requires 64 byte compact sig, EIP-2098)
    bytes calldata signature = extraData[29:93];

    // extraData bytes 93-end: context (optional, variable length)
    bytes calldata context = extraData[93:];

    // Check the validity of the Substandard #1 extraData and get the
    // expected fulfiller address.
    address expectedFulfiller = _getExpectedFulfiller(orderHash);

    // Check the validity of the Substandard #1 extraData and get the
    // expected fulfiller address.
    if (considerationLength > 0) {
      _assertValidSubstandard(_deriveConsiderationHash(zoneParameters.consideration), orderHash);
    }

    // Derive the signedOrder hash.
    bytes32 signedOrderHash = _deriveSignedOrderHash(
      expectedFulfiller,
      expiration,
      orderHash,
      context
    );

    // Derive the EIP-712 digest using the domain separator and signedOrder
    // hash.
    bytes32 digest = _deriveEIP712Digest(_domainSeparator(), signedOrderHash);

    // Recover the signer address from the digest and signature.
    address recoveredSigner = _recoverSigner(digest, signature);

    // Revert if the signer is not active.
    if (!_signers[recoveredSigner]) {
      revert SignerNotActive(recoveredSigner, orderHash);
    }
    // Return the selector of validateOrder as the magic value.
    validOrderMagicValue = ZoneInterfaceV16.validateOrder.selector;
  }

  /**
   * @dev Returns Seaport metadata for this contract, returning the
   *      contract name and supported schemas.
   *
   * @return name The contract name
   * @return schemas  The supported SIPs
   */
  function getSeaportMetadata()
    external
    view
    override(SIP5Interface, ZoneInterfaceV16)
    returns (string memory name, Schema[] memory schemas)
  {
    // Return the supported SIPs.
    schemas = new Schema[](1);
    schemas[0].id = 7;

    // Get the SIP-7 information.
    (
      bytes32 domainSeparator,
      string memory zoneName,
      string memory apiEndpoint,
      uint256[] memory substandards,
      string memory documentationURI
    ) = _sip7Information();

    // Return the zone name.
    name = zoneName;

    // Encode the SIP-7 information.
    schemas[0].metadata = abi.encode(domainSeparator, apiEndpoint, substandards, documentationURI);
  }

  /**
   * @notice The fallback function is used as a dispatcher for the
   *         `updateSigner`, `getActiveSigners` and `supportsInterface`
   *         functions.
   */
  // prettier-ignore
  fallback(bytes calldata) external payable returns (bytes memory output) {
        // Get the function selector.
        bytes4 selector = msg.sig;

        if (selector == 0xf460590b) {
            // updateSigner(address,bool)

            // Get the signer, and active status.
            address signer = abi.decode(msg.data[4:], (address));
            bool active = abi.decode(msg.data[36:], (bool));

            // Call to update the signer.
            _updateSigner(signer, active);
        } else if (selector == 0xa784b80c) {
            // getActiveSigners()

            // Call the internal function to get the active signers.
            return abi.encode(_getActiveSigners());
        } else if (selector == 0x01ffc9a7) {
            // supportsInterface(bytes4)

            // Get the interface ID.
            bytes4 interfaceId = abi.decode(msg.data[4:], (bytes4));

            // Call the internal function to determine if the interface is
            // supported.
            return abi.encode(_supportsInterface(interfaceId));
        }
    }

  /**
   * @notice Add or remove a signer to the zone.
   *         Only the controller can call this function.
   *
   * @param signer The signer address to add or remove.
   */
  function _updateSigner(address signer, bool active) internal {
    // Only the controller can call this function.
    _assertCallerIsController();
    // Add or remove the signer.
    active ? _addSigner(signer) : _removeSigner(signer);
  }

  /**
   * @notice Add a new signer to the zone.
   *         Only the controller or an active signer can call this function.
   *
   * @param signer The new signer address to add.
   */
  function _addSigner(address signer) internal {
    // Set the signer info.
    _signers[signer] = true;
    // Emit an event that the signer was added.
    emit SignerAdded(signer);
  }

  /**
   * @notice Remove an active signer from the zone.
   *         Only the controller or an active signer can call this function.
   *
   * @param signer The signer address to remove.
   */
  function _removeSigner(address signer) internal {
    // Set the signer's active status to false.
    _signers[signer] = false;

    // Emit an event that the signer was removed.
    emit SignerRemoved(signer);
  }

  /**
   * @notice Returns the active signers for the zone.
   *
   * @return signers The active signers.
   */
  function _getActiveSigners() internal view returns (address[] memory signers) {
    // Return the active signers for the zone by calling the controller.
    signers = SignedZoneControllerInterface(_controller).getActiveSigners(address(this));
  }

  /**
   * @notice Returns whether the interface is supported.
   *
   * @param interfaceId The interface id to check against.
   */
  function _supportsInterface(bytes4 interfaceId) internal pure returns (bool supportsInterface) {
    // Determine if the interface is supported.
    supportsInterface =
      interfaceId == type(SIP5Interface).interfaceId || // SIP-5
      interfaceId == type(ZoneInterfaceV16).interfaceId || // ZoneInterface
      interfaceId == 0x01ffc9a7; // ERC-165
  }

  /**
   * @notice Internal call to return the signing information, substandards,
   *         and documentation about the zone.
   *
   * @return domainSeparator  The domain separator used for signing.
   * @return zoneName         The zone name.
   * @return apiEndpoint      The API endpoint for the zone.
   * @return substandards     The substandards supported by the zone.
   * @return documentationURI The documentation URI for the zone.
   */
  function _sip7Information()
    internal
    view
    returns (
      bytes32 domainSeparator,
      string memory zoneName,
      string memory apiEndpoint,
      uint256[] memory substandards,
      string memory documentationURI
    )
  {
    // Return the SIP-7 information.
    domainSeparator = _domainSeparator();

    // Get the SIP-7 information from the controller.
    (, zoneName, apiEndpoint, substandards, documentationURI) = SignedZoneControllerInterface(
      _controller
    ).getAdditionalZoneInformation(address(this));
  }

  /**
   * @dev Derive the signedOrder hash from the orderHash and expiration.
   *
   * @param fulfiller  The expected fulfiller address.
   * @param expiration The signature expiration timestamp.
   * @param orderHash  The order hash.
   * @param context    The optional variable-length context.
   *
   * @return signedOrderHash The signedOrder hash.
   *
   */
  function _deriveSignedOrderHash(
    address fulfiller,
    uint64 expiration,
    bytes32 orderHash,
    bytes calldata context
  ) internal view returns (bytes32 signedOrderHash) {
    // Derive the signed order hash.
    signedOrderHash = keccak256(
      abi.encode(_SIGNED_ORDER_TYPEHASH, fulfiller, expiration, orderHash, keccak256(context))
    );
  }

  /**
   * @dev Internal view function to return the signer of a signature.
   *
   * @param digest    The digest to verify the signature against.
   * @param signature A signature from the signer indicating that the order
   *                  has been approved.
   *
   * @return recoveredSigner The recovered signer.
   */
  function _recoverSigner(
    bytes32 digest,
    bytes memory signature
  ) internal view returns (address recoveredSigner) {
    // Utilize assembly to perform optimized signature verification check.
    assembly {
      // Ensure that first word of scratch space is empty.
      mstore(0, 0)

      // Declare value for v signature parameter.
      let v

      // Get the length of the signature.
      let signatureLength := mload(signature)

      // Get the pointer to the value preceding the signature length.
      // This will be used for temporary memory overrides - either the
      // signature head for isValidSignature or the digest for ecrecover.
      let wordBeforeSignaturePtr := sub(signature, OneWord)

      // Cache the current value behind the signature to restore it later.
      let cachedWordBeforeSignature := mload(wordBeforeSignaturePtr)

      // Declare lenDiff + recoveredSigner scope to manage stack pressure.
      {
        // Take the difference between the max ECDSA signature length
        // and the actual signature length. Overflow desired for any
        // values > 65. If the diff is not 0 or 1, it is not a valid
        // ECDSA signature - move on to EIP1271 check.
        let lenDiff := sub(ECDSA_MaxLength, signatureLength)

        // If diff is 0 or 1, it may be an ECDSA signature.
        // Try to recover signer.
        if iszero(gt(lenDiff, 1)) {
          // Read the signature `s` value.
          let originalSignatureS := mload(add(signature, ECDSA_signature_s_offset))

          // Read the first byte of the word after `s`. If the
          // signature is 65 bytes, this will be the real `v` value.
          // If not, it will need to be modified - doing it this way
          // saves an extra condition.
          v := byte(0, mload(add(signature, ECDSA_signature_v_offset)))

          // If lenDiff is 1, parse 64-byte signature as ECDSA.
          if lenDiff {
            // Extract yParity from highest bit of vs and add 27 to
            // get v.
            v := add(shr(MaxUint8, originalSignatureS), Signature_lower_v)

            // Extract canonical s from vs, all but the highest bit.
            // Temporarily overwrite the original `s` value in the
            // signature.
            mstore(
              add(signature, ECDSA_signature_s_offset),
              and(originalSignatureS, EIP2098_allButHighestBitMask)
            )
          }
          // Temporarily overwrite the signature length with `v` to
          // conform to the expected input for ecrecover.
          mstore(signature, v)

          // Temporarily overwrite the word before the length with
          // `digest` to conform to the expected input for ecrecover.
          mstore(wordBeforeSignaturePtr, digest)

          // Attempt to recover the signer for the given signature. Do
          // not check the call status as ecrecover will return a null
          // address if the signature is invalid.
          pop(
            staticcall(
              gas(),
              Ecrecover_precompile, // Call ecrecover precompile.
              wordBeforeSignaturePtr, // Use data memory location.
              Ecrecover_args_size, // Size of digest, v, r, and s.
              0, // Write result to scratch space.
              OneWord // Provide size of returned result.
            )
          )

          // Restore cached word before signature.
          mstore(wordBeforeSignaturePtr, cachedWordBeforeSignature)

          // Restore cached signature length.
          mstore(signature, signatureLength)

          // Restore cached signature `s` value.
          mstore(add(signature, ECDSA_signature_s_offset), originalSignatureS)

          // Read the recovered signer from the buffer given as return
          // space for ecrecover.
          recoveredSigner := mload(0)
        }
      }

      // Restore the cached values overwritten by selector, digest and
      // signature head.
      mstore(wordBeforeSignaturePtr, cachedWordBeforeSignature)
    }
  }

  /**
   * @dev Internal view function to get the EIP-712 domain separator. If the
   *      chainId matches the chainId set on deployment, the cached domain
   *      separator will be returned; otherwise, it will be derived from
   *      scratch.
   *
   * @return The domain separator.
   */
  function _domainSeparator() internal view returns (bytes32) {
    // prettier-ignore
    return block.chainid == _CHAIN_ID
            ? _DOMAIN_SEPARATOR
            : _deriveDomainSeparator();
  }

  /**
   * @dev Internal view function to derive the EIP-712 domain separator.
   *
   * @return domainSeparator The derived domain separator.
   */
  function _deriveDomainSeparator() internal view returns (bytes32 domainSeparator) {
    bytes32 typehash = _EIP_712_DOMAIN_TYPEHASH;
    bytes32 nameHash = _NAME_HASH;
    bytes32 versionHash = _VERSION_HASH;

    // Leverage scratch space and other memory to perform an efficient hash.
    assembly {
      // Retrieve the free memory pointer; it will be replaced afterwards.
      let freeMemoryPointer := mload(FreeMemoryPointerSlot)

      // Retrieve value at 0x80; it will also be replaced afterwards.
      let slot0x80 := mload(Slot0x80)

      // Place typehash, name hash, and version hash at start of memory.
      mstore(0, typehash)
      mstore(OneWord, nameHash)
      mstore(TwoWords, versionHash)

      // Place chainId in the next memory location.
      mstore(ThreeWords, chainid())

      // Place the address of this contract in the next memory location.
      mstore(FourWords, address())

      // Hash relevant region of memory to derive the domain separator.
      domainSeparator := keccak256(0, FiveWords)

      // Restore the free memory pointer.
      mstore(FreeMemoryPointerSlot, freeMemoryPointer)

      // Restore the zero slot to zero.
      mstore(ZeroSlot, 0)

      // Restore the value at 0x80.
      mstore(Slot0x80, slot0x80)
    }
  }

  /**
   * @dev Internal pure function to efficiently derive an digest to sign for
   *      an order in accordance with EIP-712.
   *
   * @param domainSeparator The domain separator.
   * @param signedOrderHash The signedOrder hash.
   *
   * @return digest The digest hash.
   */
  function _deriveEIP712Digest(
    bytes32 domainSeparator,
    bytes32 signedOrderHash
  ) internal pure returns (bytes32 digest) {
    // Leverage scratch space to perform an efficient hash.
    assembly {
      // Place the EIP-712 prefix at the start of scratch space.
      mstore(0, EIP_712_PREFIX)

      // Place the domain separator in the next region of scratch space.
      mstore(EIP712_DomainSeparator_offset, domainSeparator)

      // Place the signed order hash in scratch space, spilling into the
      // first two bytes of the free memory pointer — this should never be
      // set as memory cannot be expanded to that size, and will be
      // zeroed out after the hash is performed.
      mstore(EIP712_SignedOrderHash_offset, signedOrderHash)

      // Hash the relevant region
      digest := keccak256(0, EIP712_DigestPayload_size)

      // Clear out the dirtied bits in the memory pointer.
      mstore(EIP712_SignedOrderHash_offset, 0)
    }
  }

  /**
   * @dev Private view function to revert if the caller is not the
   *      controller.
   */
  function _assertCallerIsController() internal view {
    // Get the controller address to use in the assembly block.
    address controller = _controller;

    assembly {
      // Revert if the caller is not the controller.
      if iszero(eq(caller(), controller)) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, InvalidController_error_selector)
        // revert(abi.encodeWithSignature(
        //   "InvalidController()")
        // )
        revert(0x1c, InvalidController_error_length)
      }
    }
  }

  /**
   * @dev Internal pure function to validate calldata offsets for the
   *      dyanamic type in ZoneParameters. This ensures that functions using
   *      the calldata object normally will be using the same data as the
   *      assembly functions and that values that are bound to a given range
   *      are within that range.
   */
  function _assertValidZoneParameters() internal pure {
    // Utilize assembly in order to read offset data directly from calldata.
    assembly {
      /*
       * Checks:
       * 1. Zone parameters struct offset == 0x20
       */

      // Zone parameters at calldata 0x04 must have offset of 0x20.
      if iszero(eq(calldataload(Zone_parameters_cdPtr), Zone_parameters_ptr)) {
        // Store left-padded selector with push4 (reduces bytecode), mem[28:32] = selector
        mstore(0, InvalidZoneParameterEncoding_error_selector)
        // revert(abi.encodeWithSignature("InvalidZoneParameterEncoding()"))
        revert(0x1c, InvalidZoneParameterEncoding_error_length)
      }
    }
  }

  /**
   * @dev Internal pure function to ensure that the context argument for the
   *      supplied extra data follows the substandard #1 format. Returns the
   *      expected fulfiller of the order for deriving the signed order hash.
   *
   * @param orderHash The order hash.
   *
   * @return expectedFulfiller The expected fulfiller of the order.
   */
  function _getExpectedFulfiller(
    bytes32 orderHash
  ) internal pure returns (address expectedFulfiller) {
    // Revert if the expected fulfiller is not the zero address and does
    // not match the actual fulfiller
    assembly {
      // Get the actual fulfiller.
      let actualFulfiller := calldataload(Zone_parameters_fulfiller_cdPtr)
      let extraDataPtr := calldataload(Zone_extraData_cdPtr)

      // Get the expected fulfiller.
      expectedFulfiller := shr(96, calldataload(add(expectedFulfiller_offset, extraDataPtr)))

      // Revert if expected fulfiller is not the zero address and does
      // not match the actual fulfiller.
      if and(iszero(iszero(expectedFulfiller)), iszero(eq(expectedFulfiller, actualFulfiller))) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, InvalidFulfiller_error_selector)
        mstore(InvalidFulfiller_error_expectedFulfiller_ptr, expectedFulfiller)
        mstore(InvalidFulfiller_error_actualFulfiller_ptr, actualFulfiller)
        mstore(InvalidFulfiller_error_orderHash_ptr, orderHash)
        // revert(abi.encodeWithSignature(
        //   "InvalidFulfiller(address,address,bytes32)", expectedFulfiller, actualFulfiller, orderHash)
        // )
        revert(0x1c, InvalidFulfiller_error_length)
      }
    }
  }

  /**
   * @dev Internal pure function to ensure that the context argument for the
   *      supplied extra data follows the substandard #1 format. Returns the
   *      expected fulfiller of the order for deriving the signed order hash.
   *
   */
  function _assertValidSubstandard(bytes32 considerationHash, bytes32 orderHash) internal pure {
    // identifier does not match the actual consideration.
    assembly {
      let extraDataPtr := calldataload(Zone_extraData_cdPtr)
      let considerationPtr := calldataload(Zone_consideration_head_cdPtr)
      // Get the actual consideration.
      let actualConsideration := calldataload(add(actualConsideration_offset, considerationPtr))

      // Get the expected consideration.
      let expectedConsiderationHash := calldataload(
        add(expectedConsideration_offset, extraDataPtr) //TODO rename
      )
      // Revert if expected consideration item does not match the actual
      // consideration item.
      if iszero(eq(considerationHash, expectedConsiderationHash)) {
        // Store left-padded selector with push4, mem[28:32] = selector
        mstore(0, InvalidConsideration_error_selector)
        mstore(InvalidConsideration_error_expectedConsideration_ptr, expectedConsiderationHash)
        mstore(InvalidConsideration_error_actualConsideration_ptr, actualConsideration)
        mstore(InvalidConsideration_error_orderHash_ptr, orderHash)
        // revert(abi.encodeWithSignature(
        //   "InvalidConsideration(uint256,uint256,bytes32)", expectedConsideration, actualConsideration, orderHash)
        // )
        revert(0x1c, InvalidConsideration_error_length)
      }
    }
  }

  /// @dev Calculates consideration hash
  function _deriveConsiderationHash(
    ReceivedItem[] calldata consideration
  ) internal pure returns (bytes32) {
    uint256 numberOfItems = consideration.length;
    bytes32[] memory considerationHashes = new bytes32[](numberOfItems);
    for (uint256 i; i < numberOfItems; ) {
      considerationHashes[i] = _deriveReceivedItemHash(consideration[i]);
      unchecked {
        ++i;
      }
    }
    return
      keccak256(
        abi.encode(CONSIDERATION_HASHTYPE, keccak256(abi.encodePacked(considerationHashes)))
      );
  }

  /// @dev Calculates consideration item hash
  function _deriveReceivedItemHash(
    ReceivedItem calldata receivedItem
  ) internal pure returns (bytes32) {
    return
      keccak256(
        abi.encode(
          RECEIVED_ITEM_HASHTYPE,
          receivedItem.itemType,
          receivedItem.token,
          receivedItem.identifier,
          receivedItem.amount,
          receivedItem.recipient
        )
      );
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

contract ReservoirErc1155 is ERC1155, Ownable {
  using Strings for uint256;

  // Fields

  address private royaltyRecipient;
  uint256 private royaltyBps;

  string public contractURI;

  // Constructor

  constructor(
    address _owner,
    string memory _uri,
    string memory _contractURI,
    address _royaltyRecipient,
    uint256 _royaltyBps
  ) ERC1155(_uri) {
    contractURI = _contractURI;
    royaltyRecipient = _royaltyRecipient;
    royaltyBps = _royaltyBps;

    _transferOwnership(_owner);
  }

  // Public methods

  function mint(uint256 tokenId, uint256 amount) external {
    _mint(msg.sender, tokenId, amount, "");
  }

  function uri(uint256 tokenId) public view virtual override returns (string memory) {
    return string(abi.encodePacked(super.uri(tokenId), tokenId.toString()));
  }

  // Owner methods

  function updateURI(string memory _uri) external onlyOwner {
    _setURI(_uri);
  }

  function updateContractURI(string memory _contractURI) external onlyOwner {
    contractURI = _contractURI;
  }

  function updateRoyalty(address _royaltyRecipient, uint256 _royaltyBps) external onlyOwner {
    royaltyRecipient = _royaltyRecipient;
    royaltyBps = _royaltyBps;
  }

  // EIP2981

  function royaltyInfo(
    uint256,
    uint256 price
  ) external view returns (address receiver, uint256 amount) {
    receiver = royaltyRecipient;
    amount = (price * royaltyBps) / 10000;
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    return interfaceId == 0x2a55205a || super.supportsInterface(interfaceId);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

contract ReservoirErc721 is ERC721, Ownable {
  // Fields

  uint256 private nextTokenId;
  string private baseTokenURI;
  address private royaltyRecipient;
  uint256 private royaltyBps;

  string public contractURI;

  // Constructor

  constructor(
    address _owner,
    string memory _baseTokenURI,
    string memory _contractURI,
    address _royaltyRecipient,
    uint256 _royaltyBps
  ) ERC721("Reservoir", "RSV") {
    baseTokenURI = _baseTokenURI;
    contractURI = _contractURI;
    royaltyRecipient = _royaltyRecipient;
    royaltyBps = _royaltyBps;

    _transferOwnership(_owner);
  }

  // Public methods

  function mint() external {
    _mint(msg.sender, nextTokenId++);
  }

  // Owner methods

  function updateBaseTokenURI(string memory _baseTokenURI) external onlyOwner {
    baseTokenURI = _baseTokenURI;
  }

  function updateContractURI(string memory _contractURI) external onlyOwner {
    contractURI = _contractURI;
  }

  function updateRoyalty(address _royaltyRecipient, uint256 _royaltyBps) external onlyOwner {
    royaltyRecipient = _royaltyRecipient;
    royaltyBps = _royaltyBps;
  }

  // EIP2981

  function royaltyInfo(
    uint256,
    uint256 price
  ) external view returns (address receiver, uint256 amount) {
    receiver = royaltyRecipient;
    amount = (price * royaltyBps) / 10000;
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    return interfaceId == 0x2a55205a || super.supportsInterface(interfaceId);
  }

  // Internal methods

  function _baseURI() internal view override returns (string memory) {
    return baseTokenURI;
  }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;

import {IPropertyValidator} from "./interfaces/IPropertyValidator.sol";

// Credits: https://github.com/mzhu25/0x-property-validators
contract BitVectorValidator is IPropertyValidator {
  function validateProperty(
    address, // tokenAddress
    uint256 tokenId,
    bytes calldata propertyData
  ) external pure {
    // tokenId < propertyData.length * 8
    require(tokenId < propertyData.length << 3, "Bit vector length exceeded");

    // Bit corresponding to tokenId must be set
    require(
      uint8(propertyData[tokenId >> 3]) & (0x80 >> (tokenId & 7)) != 0,
      "Token id not in bit vector"
    );
  }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

interface IPropertyValidator {
  function validateProperty(
    address tokenAddress,
    uint256 tokenId,
    bytes calldata propertyData
  ) external view;
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;

import {IPropertyValidator} from "./interfaces/IPropertyValidator.sol";

// Credits: https://github.com/mzhu25/0x-property-validators
contract PackedListValidator is IPropertyValidator {
    function validateProperty(
        address, // tokenAddress
        uint256 tokenId,
        bytes calldata propertyData
    )
        external
        pure
    {
        (uint256 bytesPerTokenId, bytes memory packedList) = abi.decode(
            propertyData,
            (uint256, bytes)
        );

        require(
            bytesPerTokenId != 0 && bytesPerTokenId <= 32,
            "Invalid number of bytes per token id"
        );

        // Masks the lower `bytesPerTokenId` bytes of a word
        // So if `bytesPerTokenId` == 1, then bitmask = 0xff
        //    if `bytesPerTokenId` == 2, then bitmask = 0xffff, etc.
        uint256 bitMask = ~(type(uint256).max << (bytesPerTokenId << 3));
        assembly {
            // Binary search for given token id

            let left := 1
            // right = number of tokenIds in the list
            let right := div(mload(packedList), bytesPerTokenId)

            // while(left < right)
            for {} lt(left, right) {} {
                // mid = (left + right) / 2
                let mid := shr(1, add(left, right))
                // more or less equivalent to:
                // value = list[index]
                let offset := add(packedList, mul(mid, bytesPerTokenId))
                let value := and(mload(offset), bitMask)
                // if (value < tokenId) {
                //     left = mid + 1;
                //     continue;
                // }
                if lt(value, tokenId) {
                    left := add(mid, 1)
                    continue
                }
                // if (value > tokenId) {
                //     right = mid;
                //     continue;
                // }
                if gt(value, tokenId) {
                    right := mid
                    continue
                }
                // if (value == tokenId) { return; }
                stop()
            }
            // At this point left == right; check if list[left] == tokenId
            let offset := add(packedList, mul(left, bytesPerTokenId))
            let value := and(mload(offset), bitMask)
            if eq(value, tokenId) {
                stop()
            }
        }
        revert("Token id not in packed list");
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {IPropertyValidator} from "./interfaces/IPropertyValidator.sol";

contract TokenRangeValidator is IPropertyValidator {
  function validateProperty(
    address, // tokenAddress
    uint256 tokenId,
    bytes calldata propertyData
  ) external pure {
    (uint256 startTokenId, uint256 endTokenId) = abi.decode(propertyData, (uint256, uint256));
    require(startTokenId <= tokenId && tokenId <= endTokenId, "Token id out of range");
  }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Library for converting between addresses and bytes32 values.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/Bytes32AddressLib.sol)
library Bytes32AddressLib {
    function fromLast20Bytes(bytes32 bytesValue) internal pure returns (address) {
        return address(uint160(uint256(bytesValue)));
    }

    function fillLast12Bytes(address addressValue) internal pure returns (bytes32) {
        return bytes32(bytes20(addressValue));
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

import {Bytes32AddressLib} from "./Bytes32AddressLib.sol";

/// @notice Deploy to deterministic addresses without an initcode factor.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/CREATE3.sol)
/// @author Modified from 0xSequence (https://github.com/0xSequence/create3/blob/master/contracts/Create3.sol)
library CREATE3 {
    using Bytes32AddressLib for bytes32;

    //--------------------------------------------------------------------------------//
    // Opcode     | Opcode + Arguments    | Description      | Stack View             //
    //--------------------------------------------------------------------------------//
    // 0x36       |  0x36                 | CALLDATASIZE     | size                   //
    // 0x3d       |  0x3d                 | RETURNDATASIZE   | 0 size                 //
    // 0x3d       |  0x3d                 | RETURNDATASIZE   | 0 0 size               //
    // 0x37       |  0x37                 | CALLDATACOPY     |                        //
    // 0x36       |  0x36                 | CALLDATASIZE     | size                   //
    // 0x3d       |  0x3d                 | RETURNDATASIZE   | 0 size                 //
    // 0x34       |  0x34                 | CALLVALUE        | value 0 size           //
    // 0xf0       |  0xf0                 | CREATE           | newContract            //
    //--------------------------------------------------------------------------------//
    // Opcode     | Opcode + Arguments    | Description      | Stack View             //
    //--------------------------------------------------------------------------------//
    // 0x67       |  0x67XXXXXXXXXXXXXXXX | PUSH8 bytecode   | bytecode               //
    // 0x3d       |  0x3d                 | RETURNDATASIZE   | 0 bytecode             //
    // 0x52       |  0x52                 | MSTORE           |                        //
    // 0x60       |  0x6008               | PUSH1 08         | 8                      //
    // 0x60       |  0x6018               | PUSH1 18         | 24 8                   //
    // 0xf3       |  0xf3                 | RETURN           |                        //
    //--------------------------------------------------------------------------------//
    bytes internal constant PROXY_BYTECODE = hex"67_36_3d_3d_37_36_3d_34_f0_3d_52_60_08_60_18_f3";

    bytes32 internal constant PROXY_BYTECODE_HASH = keccak256(PROXY_BYTECODE);

    function deploy(
        bytes32 salt,
        bytes memory creationCode,
        uint256 value
    ) internal returns (address deployed) {
        bytes memory proxyChildBytecode = PROXY_BYTECODE;

        address proxy;
        /// @solidity memory-safe-assembly
        assembly {
            // Deploy a new contract with our pre-made bytecode via CREATE2.
            // We start 32 bytes into the code to avoid copying the byte length.
            proxy := create2(0, add(proxyChildBytecode, 32), mload(proxyChildBytecode), salt)
        }
        require(proxy != address(0), "DEPLOYMENT_FAILED");

        deployed = getDeployed(salt);
        (bool success, ) = proxy.call{value: value}(creationCode);
        require(success && deployed.code.length != 0, "INITIALIZATION_FAILED");
    }

    function getDeployed(bytes32 salt) internal view returns (address) {
        address proxy = keccak256(
            abi.encodePacked(
                // Prefix:
                bytes1(0xFF),
                // Creator:
                address(this),
                // Salt:
                salt,
                // Bytecode hash:
                PROXY_BYTECODE_HASH
            )
        ).fromLast20Bytes();

        return
            keccak256(
                abi.encodePacked(
                    // 0xd6 = 0xc0 (short RLP prefix) + 0x16 (length of: 0x94 ++ proxy ++ 0x01)
                    // 0x94 = 0x80 + 0x14 (0x14 = the length of an address, 20 bytes, in hex)
                    hex"d6_94",
                    proxy,
                    hex"01" // Nonce of the proxy contract (1)
                )
            ).fromLast20Bytes();
    }
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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SeaportV16Module.SeaportETHListingWithPrice[]","name":"orders","type":"tuple[]"},{"components":[{"internalType":"address","name":"fillTo","type":"address"},{"internalType":"address","name":"refundTo","type":"address"},{"internalType":"bool","name":"revertIfIncomplete","type":"bool"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct BaseExchangeModule.ETHListingParams","name":"params","type":"tuple"},{"components":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct BaseExchangeModule.Fee[]","name":"fees","type":"tuple[]"}],"name":"acceptETHListings","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"components":[{"components":[{"internalType":"address","name":"offerer","type":"address"},{"internalType":"address","name":"zone","type":"address"},{"components":[{"internalType":"enum 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ISeaport.AdvancedOrder[]","name":"orders","type":"tuple[]"},{"components":[{"components":[{"internalType":"uint256","name":"orderIndex","type":"uint256"},{"internalType":"uint256","name":"itemIndex","type":"uint256"}],"internalType":"struct ISeaport.FulfillmentComponent[]","name":"offerComponents","type":"tuple[]"},{"components":[{"internalType":"uint256","name":"orderIndex","type":"uint256"},{"internalType":"uint256","name":"itemIndex","type":"uint256"}],"internalType":"struct ISeaport.FulfillmentComponent[]","name":"considerationComponents","type":"tuple[]"}],"internalType":"struct ISeaport.Fulfillment[]","name":"fulfillments","type":"tuple[]"},{"internalType":"uint256","name":"price","type":"uint256"}],"internalType":"struct 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BaseExchangeModule.Fee[]","name":"fees","type":"tuple[]"}],"name":"acceptETHPrivateListings","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"claimOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"isValidSignature","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"bytes[]","name":"data","type":"bytes[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"makeCalls","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"address","name":"offerer","type":"address"},{"internalType":"address","name":"zone","type":"address"},{"components":[{"internalType":"enum ISeaport.ItemType","name":"itemType","type":"uint8"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"identifierOrCriteria","type":"uint256"},{"internalType":"uint256","name":"startAmount","type":"uint256"},{"internalType":"uint256","name":"endAmount","type":"uint256"}],"internalType":"struct ISeaport.OfferItem[]","name":"offer","type":"tuple[]"},{"components":[{"internalType":"enum ISeaport.ItemType","name":"itemType","type":"uint8"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"identifierOrCriteria","type":"uint256"},{"internalType":"uint256","name":"startAmount","type":"uint256"},{"internalType":"uint256","name":"endAmount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct ISeaport.ConsiderationItem[]","name":"consideration","type":"tuple[]"},{"internalType":"enum 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ISeaport.Fulfillment[]","name":"fulfillments","type":"tuple[]"}],"name":"matchOrders","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"onERC1155Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"router","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000f3d63166f0ca56c3c1a3508fce03ff0cf3fb691e000000000000000000000000c2c862322e9c97d6244a3506655da95f05246fd80000000000000000000000000000000000000068f116a894984e2db1123eb395

-----Decoded View---------------
Arg [0] : owner (address): 0xf3d63166F0Ca56C3c1A3508FcE03Ff0Cf3Fb691e
Arg [1] : router (address): 0xC2c862322E9c97D6244a3506655DA95F05246Fd8
Arg [2] : exchange (address): 0x0000000000000068F116a894984e2DB1123eB395

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000f3d63166f0ca56c3c1a3508fce03ff0cf3fb691e
Arg [1] : 000000000000000000000000c2c862322e9c97d6244a3506655da95f05246fd8
Arg [2] : 0000000000000000000000000000000000000068f116a894984e2db1123eb395