Contract Source Code:

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";

import "./interfaces/ICollectionContractInitializer.sol";
import "./interfaces/ICollectionFactory.sol";
import "./interfaces/IGetRoyalties.sol";
import "./interfaces/IProxyCall.sol";
import "./interfaces/ITokenCreator.sol";
import "./interfaces/ITokenCreatorPaymentAddress.sol";
import "./interfaces/IGetFees.sol";

import "./libraries/AccountMigrationLibrary.sol";
import "./libraries/ProxyCall.sol";
import "./libraries/BytesLibrary.sol";
import "./interfaces/IRoyaltyInfo.sol";

/**
 * @title A collection of NFTs.
 * @notice All NFTs from this contract are minted by the same creator.
 * A 10% royalty to the creator is included which may be split with collaborators.
 */
contract CollectionContract is
  ICollectionContractInitializer,
  IGetRoyalties,
  IGetFees,
  IRoyaltyInfo,
  ITokenCreator,
  ITokenCreatorPaymentAddress,
  ERC721BurnableUpgradeable
{
  using AccountMigrationLibrary for address;
  using AddressUpgradeable for address;
  using BytesLibrary for bytes;
  using ProxyCall for IProxyCall;

  uint256 private constant ROYALTY_IN_BASIS_POINTS = 1000;
  uint256 private constant ROYALTY_RATIO = 10;

  /**
   * @notice The baseURI to use for the tokenURI, if undefined then `ipfs://` is used.
   */
  string private baseURI_;

  /**
   * @dev Stores hashes minted to prevent duplicates.
   */
  mapping(string => bool) private cidToMinted;

  /**
   * @notice The factory which was used to create this collection.
   * @dev This is used to read common config.
   */
  ICollectionFactory public immutable collectionFactory;

  /**
   * @notice The tokenId of the most recently created NFT.
   * @dev Minting starts at tokenId 1. Each mint will use this value + 1.
   */
  uint256 public latestTokenId;

  /**
   * @notice The max tokenId which can be minted, or 0 if there's no limit.
   * @dev This value may be set at any time, but once set it cannot be increased.
   */
  uint256 public maxTokenId;

  /**
   * @notice The owner/creator of this NFT collection.
   */
  address payable public owner;

  /**
   * @dev Stores an optional alternate address to receive creator revenue and royalty payments.
   * The target address may be a contract which could split or escrow payments.
   */
  mapping(uint256 => address payable) private tokenIdToCreatorPaymentAddress;

  /**
   * @dev Tracks how many tokens have been burned, used to calc the total supply efficiently.
   */
  uint256 private burnCounter;

  /**
   * @dev Stores a CID for each NFT.
   */
  mapping(uint256 => string) private _tokenCIDs;

  event BaseURIUpdated(string baseURI);
  event CreatorMigrated(address indexed originalAddress, address indexed newAddress);
  event MaxTokenIdUpdated(uint256 indexed maxTokenId);
  event Minted(address indexed creator, uint256 indexed tokenId, string indexed indexedTokenCID, string tokenCID);
  event NFTOwnerMigrated(uint256 indexed tokenId, address indexed originalAddress, address indexed newAddress);
  event PaymentAddressMigrated(
    uint256 indexed tokenId,
    address indexed originalAddress,
    address indexed newAddress,
    address originalPaymentAddress,
    address newPaymentAddress
  );
  event SelfDestruct(address indexed owner);
  event TokenCreatorPaymentAddressSet(
    address indexed fromPaymentAddress,
    address indexed toPaymentAddress,
    uint256 indexed tokenId
  );

  modifier onlyOwner() {
    require(msg.sender == owner, "CollectionContract: Caller is not owner");
    _;
  }

  modifier onlyOperator() {
    require(collectionFactory.rolesContract().isOperator(msg.sender), "CollectionContract: Caller is not an operator");
    _;
  }

  /**
   * @dev The constructor for a proxy can only be used to assign immutable variables.
   */
  constructor(address _collectionFactory) {
    require(_collectionFactory.isContract(), "CollectionContract: collectionFactory is not a contract");
    collectionFactory = ICollectionFactory(_collectionFactory);
  }

  /**
   * @notice Called by the factory on creation.
   * @dev This may only be called once.
   */
  function initialize(
    address payable _creator,
    string memory _name,
    string memory _symbol
  ) external initializer {
    require(msg.sender == address(collectionFactory), "CollectionContract: Collection must be created via the factory");

    __ERC721_init_unchained(_name, _symbol);

    owner = _creator;
  }

  /**
   * @notice Allows the owner to mint an NFT defined by its metadata path.
   */
  function mint(string memory tokenCID) public returns (uint256 tokenId) {
    tokenId = _mint(tokenCID);
  }

  /**
   * @notice Allows the owner to mint and sets approval for all for the provided operator.
   * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval
   * transaction before starting an auction.
   */
  function mintAndApprove(string memory tokenCID, address operator) public returns (uint256 tokenId) {
    tokenId = _mint(tokenCID);
    setApprovalForAll(operator, true);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address.
   */
  function mintWithCreatorPaymentAddress(string memory tokenCID, address payable tokenCreatorPaymentAddress)
    public
    returns (uint256 tokenId)
  {
    require(tokenCreatorPaymentAddress != address(0), "CollectionContract: tokenCreatorPaymentAddress is required");
    tokenId = mint(tokenCID);
    _setTokenCreatorPaymentAddress(tokenId, tokenCreatorPaymentAddress);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address.
   * Also sets approval for all for the provided operator.
   * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval
   * transaction before starting an auction.
   */
  function mintWithCreatorPaymentAddressAndApprove(
    string memory tokenCID,
    address payable tokenCreatorPaymentAddress,
    address operator
  ) public returns (uint256 tokenId) {
    tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
    setApprovalForAll(operator, true);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address
   * which is defined by a contract call, typically a proxy contract address representing the payment terms.
   * @param paymentAddressFactory The contract to call which will return the address to use for payments.
   * @param paymentAddressCallData The call details to sent to the factory provided.
   */
  function mintWithCreatorPaymentFactory(
    string memory tokenCID,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData
  ) public returns (uint256 tokenId) {
    address payable tokenCreatorPaymentAddress = collectionFactory
      .proxyCallContract()
      .proxyCallAndReturnContractAddress(paymentAddressFactory, paymentAddressCallData);
    tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address
   * which is defined by a contract call, typically a proxy contract address representing the payment terms.
   * Also sets approval for all for the provided operator.
   * @param paymentAddressFactory The contract to call which will return the address to use for payments.
   * @param paymentAddressCallData The call details to sent to the factory provided.
   * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval
   * transaction before starting an auction.
   */
  function mintWithCreatorPaymentFactoryAndApprove(
    string memory tokenCID,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData,
    address operator
  ) public returns (uint256 tokenId) {
    tokenId = mintWithCreatorPaymentFactory(tokenCID, paymentAddressFactory, paymentAddressCallData);
    setApprovalForAll(operator, true);
  }

  /**
   * @notice Allows the owner to set a max tokenID.
   * This provides a guarantee to collectors about the limit of this collection contract, if applicable.
   * @dev Once this value has been set, it may be decreased but can never be increased.
   */
  function updateMaxTokenId(uint256 _maxTokenId) external onlyOwner {
    require(_maxTokenId > 0, "CollectionContract: Max token ID may not be cleared");
    require(maxTokenId == 0 || _maxTokenId < maxTokenId, "CollectionContract: Max token ID may not increase");
    require(latestTokenId + 1 <= _maxTokenId, "CollectionContract: Max token ID must be greater than last mint");
    maxTokenId = _maxTokenId;

    emit MaxTokenIdUpdated(_maxTokenId);
  }

  /**
   * @notice Allows the owner to assign a baseURI to use for the tokenURI instead of the default `ipfs://`.
   */
  function updateBaseURI(string calldata baseURIOverride) external onlyOwner {
    baseURI_ = baseURIOverride;

    emit BaseURIUpdated(baseURIOverride);
  }

  /**
   * @notice Allows the creator to burn if they currently own the NFT.
   */
  function burn(uint256 tokenId) public override onlyOwner {
    super.burn(tokenId);
  }

  /**
   * @notice Allows the collection owner to destroy this contract only if
   * no NFTs have been minted yet.
   */
  function selfDestruct() external onlyOwner {
    require(totalSupply() == 0, "CollectionContract: Any NFTs minted must be burned first");
    emit SelfDestruct(msg.sender);
    selfdestruct(payable(msg.sender));
  }

  /**
   * @notice Allows an NFT owner or creator and Foundation to work together in order to update the creator
   * to a new account and/or transfer NFTs to that account.
   * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}`
   * signed by the original account.
   * @dev This will gracefully skip any NFTs that have been burned or transferred.
   */
  function adminAccountMigration(
    uint256[] calldata ownedTokenIds,
    address originalAddress,
    address payable newAddress,
    bytes calldata signature
  ) public onlyOperator {
    originalAddress.requireAuthorizedAccountMigration(newAddress, signature);

    for (uint256 i = 0; i < ownedTokenIds.length; i++) {
      uint256 tokenId = ownedTokenIds[i];
      // Check that the token exists and still is owned by the originalAddress
      // so that frontrunning a burn or transfer will not cause the entire tx to revert
      if (_exists(tokenId) && ownerOf(tokenId) == originalAddress) {
        _transfer(originalAddress, newAddress, tokenId);
        emit NFTOwnerMigrated(tokenId, originalAddress, newAddress);
      }
    }

    if (owner == originalAddress) {
      owner = newAddress;
      emit CreatorMigrated(originalAddress, newAddress);
    }
  }

  /**
   * @notice Allows a split recipient and Foundation to work together in order to update the payment address
   * to a new account.
   * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}`
   * signed by the original account.
   */
  function adminAccountMigrationForPaymentAddresses(
    uint256[] calldata paymentAddressTokenIds,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData,
    uint256 addressLocationInCallData,
    address originalAddress,
    address payable newAddress,
    bytes calldata signature
  ) public onlyOperator {
    originalAddress.requireAuthorizedAccountMigration(newAddress, signature);
    _adminAccountRecoveryForPaymentAddresses(
      paymentAddressTokenIds,
      paymentAddressFactory,
      paymentAddressCallData,
      addressLocationInCallData,
      originalAddress,
      newAddress
    );
  }

  function baseURI() external view returns (string memory) {
    return _baseURI();
  }

  /**
   * @notice Returns an array of recipient addresses to which royalties for secondary sales should be sent.
   * The expected royalty amount is communicated with `getFeeBps`.
   */
  function getFeeRecipients(uint256 id) external view returns (address payable[] memory recipients) {
    recipients = new address payable[](1);
    recipients[0] = getTokenCreatorPaymentAddress(id);
  }

  /**
   * @notice Returns an array of royalties to be sent for secondary sales in basis points.
   * The expected recipients is communicated with `getFeeRecipients`.
   */
  function getFeeBps(
    uint256 /* id */
  ) external pure returns (uint256[] memory feesInBasisPoints) {
    feesInBasisPoints = new uint256[](1);
    feesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
  }

  /**
   * @notice Checks if the creator has already minted a given NFT using this collection contract.
   */
  function getHasMintedCID(string memory tokenCID) public view returns (bool) {
    return cidToMinted[tokenCID];
  }

  /**
   * @notice Returns an array of royalties to be sent for secondary sales.
   */
  function getRoyalties(uint256 tokenId)
    external
    view
    returns (address payable[] memory recipients, uint256[] memory feesInBasisPoints)
  {
    recipients = new address payable[](1);
    recipients[0] = getTokenCreatorPaymentAddress(tokenId);
    feesInBasisPoints = new uint256[](1);
    feesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
  }

  /**
   * @notice Returns the receiver and the amount to be sent for a secondary sale.
   */
  function royaltyInfo(uint256 _tokenId, uint256 _salePrice)
    external
    view
    returns (address receiver, uint256 royaltyAmount)
  {
    receiver = getTokenCreatorPaymentAddress(_tokenId);
    unchecked {
      royaltyAmount = _salePrice / ROYALTY_RATIO;
    }
  }

  /**
   * @notice Returns the creator for an NFT, which is always the collection owner.
   */
  function tokenCreator(
    uint256 /* tokenId */
  ) external view returns (address payable) {
    return owner;
  }

  /**
   * @notice Returns the desired payment address to be used for any transfers to the creator.
   * @dev The payment address may be assigned for each individual NFT, if not defined the collection owner is returned.
   */
  function getTokenCreatorPaymentAddress(uint256 tokenId)
    public
    view
    returns (address payable tokenCreatorPaymentAddress)
  {
    tokenCreatorPaymentAddress = tokenIdToCreatorPaymentAddress[tokenId];
    if (tokenCreatorPaymentAddress == address(0)) {
      tokenCreatorPaymentAddress = owner;
    }
  }

  /**
   * @notice Count of NFTs tracked by this contract.
   * @dev From the ERC-721 enumerable standard.
   */
  function totalSupply() public view returns (uint256) {
    unchecked {
      return latestTokenId - burnCounter;
    }
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    if (
      interfaceId == type(IGetRoyalties).interfaceId ||
      interfaceId == type(ITokenCreator).interfaceId ||
      interfaceId == type(ITokenCreatorPaymentAddress).interfaceId ||
      interfaceId == type(IGetFees).interfaceId ||
      interfaceId == type(IRoyaltyInfo).interfaceId
    ) {
      return true;
    }
    return super.supportsInterface(interfaceId);
  }

  function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
    require(_exists(tokenId), "CollectionContract: URI query for nonexistent token");

    return string(abi.encodePacked(_baseURI(), _tokenCIDs[tokenId]));
  }

  function _mint(string memory tokenCID) private onlyOwner returns (uint256 tokenId) {
    require(bytes(tokenCID).length > 0, "CollectionContract: tokenCID is required");
    require(!cidToMinted[tokenCID], "CollectionContract: NFT was already minted");
    unchecked {
      tokenId = ++latestTokenId;
      require(maxTokenId == 0 || tokenId <= maxTokenId, "CollectionContract: Max token count has already been minted");
      cidToMinted[tokenCID] = true;
      _tokenCIDs[tokenId] = tokenCID;
      _safeMint(msg.sender, tokenId, "");
      emit Minted(msg.sender, tokenId, tokenCID, tokenCID);
    }
  }

  /**
   * @dev Allow setting a different address to send payments to for both primary sale revenue
   * and secondary sales royalties.
   */
  function _setTokenCreatorPaymentAddress(uint256 tokenId, address payable tokenCreatorPaymentAddress) internal {
    emit TokenCreatorPaymentAddressSet(tokenIdToCreatorPaymentAddress[tokenId], tokenCreatorPaymentAddress, tokenId);
    tokenIdToCreatorPaymentAddress[tokenId] = tokenCreatorPaymentAddress;
  }

  function _burn(uint256 tokenId) internal override {
    delete cidToMinted[_tokenCIDs[tokenId]];
    delete tokenIdToCreatorPaymentAddress[tokenId];
    delete _tokenCIDs[tokenId];
    unchecked {
      burnCounter++;
    }
    super._burn(tokenId);
  }

  /**
   * @dev Split into a second function to avoid stack too deep errors
   */
  function _adminAccountRecoveryForPaymentAddresses(
    uint256[] calldata paymentAddressTokenIds,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData,
    uint256 addressLocationInCallData,
    address originalAddress,
    address payable newAddress
  ) private {
    // Call the factory and get the originalPaymentAddress
    address payable originalPaymentAddress = collectionFactory.proxyCallContract().proxyCallAndReturnContractAddress(
      paymentAddressFactory,
      paymentAddressCallData
    );

    // Confirm the original address and swap with the new address
    paymentAddressCallData.replaceAtIf(addressLocationInCallData, originalAddress, newAddress);

    // Call the factory and get the newPaymentAddress
    address payable newPaymentAddress = collectionFactory.proxyCallContract().proxyCallAndReturnContractAddress(
      paymentAddressFactory,
      paymentAddressCallData
    );

    // For each token, confirm the expected payment address and then update to the new one
    for (uint256 i = 0; i < paymentAddressTokenIds.length; i++) {
      uint256 tokenId = paymentAddressTokenIds[i];
      require(
        tokenIdToCreatorPaymentAddress[tokenId] == originalPaymentAddress,
        "CollectionContract: Payment address is not the expected value"
      );

      _setTokenCreatorPaymentAddress(tokenId, newPaymentAddress);
      emit PaymentAddressMigrated(tokenId, originalAddress, newAddress, originalPaymentAddress, newPaymentAddress);
    }
  }

  function _baseURI() internal view override returns (string memory) {
    if (bytes(baseURI_).length > 0) {
      return baseURI_;
    }
    return "ipfs://";
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Burnable.sol)

pragma solidity ^0.8.0;

import "../ERC721Upgradeable.sol";
import "../../../utils/ContextUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable {
    function __ERC721Burnable_init() internal onlyInitializing {
        __Context_init_unchained();
        __ERC165_init_unchained();
        __ERC721Burnable_init_unchained();
    }

    function __ERC721Burnable_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) public virtual {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
        _burn(tokenId);
    }
    uint256[50] private __gap;
}

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

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface ICollectionContractInitializer {
  function initialize(
    address payable _creator,
    string memory _name,
    string memory _symbol
  ) external;
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "./IRoles.sol";
import "./IProxyCall.sol";

interface ICollectionFactory {
  function rolesContract() external returns (IRoles);

  function proxyCallContract() external returns (IProxyCall);
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface IGetRoyalties {
  function getRoyalties(uint256 tokenId)
    external
    view
    returns (address payable[] memory recipients, uint256[] memory feesInBasisPoints);
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface IProxyCall {
  function proxyCallAndReturnAddress(address externalContract, bytes calldata callData)
    external
    returns (address payable result);
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface ITokenCreator {
  function tokenCreator(uint256 tokenId) external view returns (address payable);
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface ITokenCreatorPaymentAddress {
  function getTokenCreatorPaymentAddress(uint256 tokenId)
    external
    view
    returns (address payable tokenCreatorPaymentAddress);
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice An interface for communicating fees to 3rd party marketplaces.
 * @dev Originally implemented in mainnet contract 0x44d6e8933f8271abcf253c72f9ed7e0e4c0323b3
 */
interface IGetFees {
  function getFeeRecipients(uint256 id) external view returns (address payable[] memory);

  function getFeeBps(uint256 id) external view returns (uint256[] memory);
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

/**
 * @notice Checks for a valid signature authorizing the migration of an account to a new address.
 * @dev This is shared by both the NFT contracts and FNDNFTMarket, and the same signature authorizes both.
 */
library AccountMigrationLibrary {
  using ECDSA for bytes;
  using SignatureChecker for address;
  using Strings for uint256;

  // From https://ethereum.stackexchange.com/questions/8346/convert-address-to-string
  function _toAsciiString(address x) private pure returns (string memory) {
    bytes memory s = new bytes(42);
    s[0] = "0";
    s[1] = "x";
    for (uint256 i = 0; i < 20; i++) {
      bytes1 b = bytes1(uint8(uint256(uint160(x)) / (2**(8 * (19 - i)))));
      bytes1 hi = bytes1(uint8(b) / 16);
      bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi));
      s[2 * i + 2] = _char(hi);
      s[2 * i + 3] = _char(lo);
    }
    return string(s);
  }

  function _char(bytes1 b) private pure returns (bytes1 c) {
    if (uint8(b) < 10) return bytes1(uint8(b) + 0x30);
    else return bytes1(uint8(b) + 0x57);
  }

  /**
   * @dev Confirms the msg.sender is a Foundation operator and that the signature provided is valid.
   * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}`
   * signed by the original account.
   */
  function requireAuthorizedAccountMigration(
    address originalAddress,
    address newAddress,
    bytes memory signature
  ) internal view {
    require(originalAddress != newAddress, "AccountMigration: Cannot migrate to the same account");
    bytes32 hash = abi
      .encodePacked("I authorize Foundation to migrate my account to ", _toAsciiString(newAddress))
      .toEthSignedMessageHash();
    require(
      originalAddress.isValidSignatureNow(hash, signature),
      "AccountMigration: Signature must be from the original account"
    );
  }
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "../interfaces/IProxyCall.sol";

/**
 * @notice Forwards arbitrary calls to an external contract to be processed.
 * @dev This is used so that the from address of the calling contract does not have
 * any special permissions (e.g. ERC-20 transfer).
 */
library ProxyCall {
  using AddressUpgradeable for address payable;

  /**
   * @dev Used by other mixins to make external calls through the proxy contract.
   * This will fail if the proxyCall address is address(0).
   */
  function proxyCallAndReturnContractAddress(
    IProxyCall proxyCall,
    address externalContract,
    bytes memory callData
  ) internal returns (address payable result) {
    result = proxyCall.proxyCallAndReturnAddress(externalContract, callData);
    require(result.isContract(), "ProxyCall: address returned is not a contract");
  }
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice A library for manipulation of byte arrays.
 */
library BytesLibrary {
  /**
   * @dev Replace the address at the given location in a byte array if the contents at that location
   * match the expected address.
   */
  function replaceAtIf(
    bytes memory data,
    uint256 startLocation,
    address expectedAddress,
    address newAddress
  ) internal pure {
    bytes memory expectedData = abi.encodePacked(expectedAddress);
    bytes memory newData = abi.encodePacked(newAddress);
    // An address is 20 bytes long
    for (uint256 i = 0; i < 20; i++) {
      uint256 dataLocation = startLocation + i;
      require(data[dataLocation] == expectedData[i], "Bytes: Data provided does not include the expectedAddress");
      data[dataLocation] = newData[i];
    }
  }

  /**
   * @dev Checks if the call data starts with the given function signature.
   */
  function startsWith(bytes memory callData, bytes4 functionSig) internal pure returns (bool) {
    // A signature is 4 bytes long
    if (callData.length < 4) {
      return false;
    }
    for (uint256 i = 0; i < 4; i++) {
      if (callData[i] != functionSig[i]) {
        return false;
      }
    }

    return true;
  }
}

// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice Interface for EIP-2981: NFT Royalty Standard.
 * For more see: https://eips.ethereum.org/EIPS/eip-2981.
 */
interface IRoyaltyInfo {
  /// @notice Called with the sale price to determine how much royalty
  //          is owed and to whom.
  /// @param _tokenId - the NFT asset queried for royalty information
  /// @param _salePrice - the sale price of the NFT asset specified by _tokenId
  /// @return receiver - address of who should be sent the royalty payment
  /// @return royaltyAmount - the royalty payment amount for _salePrice
  function royaltyInfo(uint256 _tokenId, uint256 _salePrice)
    external
    view
    returns (address receiver, uint256 royaltyAmount);
}

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

pragma solidity ^0.8.0;

import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
    using AddressUpgradeable for address;
    using StringsUpgradeable 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.
     */
    function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __Context_init_unchained();
        __ERC165_init_unchained();
        __ERC721_init_unchained(name_, symbol_);
    }

    function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
        return
            interfaceId == type(IERC721Upgradeable).interfaceId ||
            interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        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) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        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 overriden 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 = ERC721Upgradeable.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        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: transfer caller is not owner nor 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: transfer caller is not owner nor 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 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 _owners[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) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721Upgradeable.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, 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);

        _balances[to] += 1;
        _owners[tokenId] = to;

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

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721Upgradeable.ownerOf(tokenId);

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

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

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

    /**
     * @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(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits a {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 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 IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` 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 tokenId
    ) internal virtual {}
    uint256[44] private __gap;
}

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

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
    uint256[50] private __gap;
}

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

pragma solidity ^0.8.0;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the
 * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() initializer {}
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
        // contract may have been reentered.
        require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} modifier, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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`, 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 be 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * 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 Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @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 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);

    /**
     * @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;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 IERC721ReceiverUpgradeable {
    /**
     * @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 `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

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

pragma solidity ^0.8.0;

import "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
    /**
     * @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 v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @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] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

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

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
        __ERC165_init_unchained();
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }
    uint256[50] private __gap;
}

// 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 IERC165Upgradeable {
    /**
     * @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 OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice Interface for a contract which implements admin roles.
 */
interface IRoles {
  function isAdmin(address account) external view returns (bool);

  function isOperator(address account) external view returns (bool);
}

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

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s;
        uint8 v;
        assembly {
            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            v := add(shr(255, vs), 27)
        }
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

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

pragma solidity ^0.8.0;

import "./ECDSA.sol";
import "../Address.sol";
import "../../interfaces/IERC1271.sol";

/**
 * @dev Signature verification helper: Provide a single mechanism to verify both private-key (EOA) ECDSA signature and
 * ERC1271 contract signatures. Using this instead of ECDSA.recover in your contract will make them compatible with
 * smart contract wallets such as Argent and Gnosis.
 *
 * Note: unlike ECDSA signatures, contract signature's are revocable, and the outcome of this function can thus change
 * through time. It could return true at block N and false at block N+1 (or the opposite).
 *
 * _Available since v4.1._
 */
library SignatureChecker {
    function isValidSignatureNow(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool) {
        (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature);
        if (error == ECDSA.RecoverError.NoError && recovered == signer) {
            return true;
        }

        (bool success, bytes memory result) = signer.staticcall(
            abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)
        );
        return (success && result.length == 32 && abi.decode(result, (bytes4)) == IERC1271.isValidSignature.selector);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @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] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 *
 * _Available since v4.1._
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}