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//SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

import "@limitbreak/creator-token-standards/src/access/OwnableBasic.sol";
import "@limitbreak/creator-token-standards/src/erc721c/v2/ERC721C.sol";
import "@limitbreak/creator-token-standards/src/programmable-royalties/BasicRoyalties.sol";
import "@openzeppelin/contracts/utils/cryptography/EIP712.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "./interfaces/IStakedToken.sol";
import "./interfaces/IDelegateRegistry.sol";
import "./UriManager.sol";

contract SynergySeed is
    OwnableBasic,
    ERC721C,
    BasicRoyalties,
    Pausable,
    EIP712,
    UriManager
{
    address public signer;
    mapping(address => uint256) public mintLimits;
    address public stakingAddress;
    IStakedToken public stakedSynergySeed;

    struct MintRequest {
        address account;
        uint256 tokenId;
        uint256 expiresAtBlock;
    }

    bytes32 private constant MINT_REQUEST_TYPE_HASH =
        keccak256(
            "MintRequest(address account,uint256 tokenId,uint256 expiresAtBlock)"
        );

    IDelegateRegistry public constant DELEGATE_REGISTRY =
        IDelegateRegistry(0x00000000000000447e69651d841bD8D104Bed493);

    constructor(
        string memory name_,
        string memory symbol_,
        string memory prefix_,
        string memory suffix_,
        address royaltyReceiver_,
        uint96 royaltyFeeNumerator_,
        address signer_,
        address stakedSynergySeedAddress_
    )
        ERC721OpenZeppelin(name_, symbol_)
        BasicRoyalties(royaltyReceiver_, royaltyFeeNumerator_)
        EIP712("SYNERGY-SEED", "0.1.0")
        UriManager(prefix_, suffix_)
    {
        _pause();
        signer = signer_;
        stakedSynergySeed = IStakedToken(stakedSynergySeedAddress_);
    }

    function mint(
        MintRequest calldata request_,
        bytes calldata signature_
    ) external whenAuthorized(request_, signature_) whenNotPaused {
        address account = request_.account;
        require(
            account == msg.sender ||
                DELEGATE_REGISTRY.checkDelegateForAll(msg.sender, account, ""),
            "Invalid account"
        );
        stakedSynergySeed.mint(account, request_.tokenId);
        _callMint(stakingAddress, request_.tokenId);
    }

    function setSigner(address signer_) public {
        _requireCallerIsContractOwner();
        signer = signer_;
    }

    function setStakingAddress(address stakingAddress_) public {
        _requireCallerIsContractOwner();
        stakingAddress = stakingAddress_;
    }

    function setDefaultRoyalty(address receiver_, uint96 feeNumerator_) public {
        _requireCallerIsContractOwner();
        _setDefaultRoyalty(receiver_, feeNumerator_);
    }

    function setTokenRoyalty(
        uint256 tokenId_,
        address receiver_,
        uint96 feeNumerator_
    ) public {
        _requireCallerIsContractOwner();
        _setTokenRoyalty(tokenId_, receiver_, feeNumerator_);
    }

    function pause() public {
        _requireCallerIsContractOwner();
        _pause();
    }

    function unpause() public {
        _requireCallerIsContractOwner();
        _unpause();
    }

    function domainSeparator() external view returns (bytes32) {
        return _domainSeparatorV4();
    }

    function tokenURI(
        uint256 tokenId
    ) public view override returns (string memory) {
        _requireMinted(tokenId);
        return _buildUri(tokenId);
    }

    function isApprovedForAll(
        address owner_,
        address operator_
    ) public view virtual override returns (bool) {
        return
            super.isApprovedForAll(owner_, operator_) ||
            msg.sender == stakingAddress;
    }

    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override(ERC721C, ERC2981) returns (bool) {
        return
            ERC721C.supportsInterface(interfaceId) ||
            ERC2981.supportsInterface(interfaceId);
    }

    function _callMint(address account_, uint256 amount_) internal {
        require(tx.origin == msg.sender, "No bots");
        _safeMint(account_, amount_);
    }

    function _hashTypedData(
        MintRequest calldata request_
    ) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    MINT_REQUEST_TYPE_HASH,
                    request_.account,
                    request_.tokenId,
                    request_.expiresAtBlock
                )
            );
    }

    modifier whenAuthorized(
        MintRequest calldata request_,
        bytes calldata signature_
    ) {
        bytes32 structHash = _hashTypedData(request_);
        bytes32 digest = _hashTypedDataV4(structHash);
        address recoveredSigner = ECDSA.recover(digest, signature_);
        require(recoveredSigner == signer, "Unauthorized mint");
        require(request_.expiresAtBlock > block.number, "Expired signature");
        _;
    }
}

// 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/AutomaticValidatorTransferApproval.sol";
import "../../utils/CreatorTokenBaseV2.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, CreatorTokenBaseV2, AutomaticValidatorTransferApproval {

    /**
     * @notice Overrides behavior of isApprovedFor all such that if an operator is not explicitly approved
     *         for all, the contract owner can optionally auto-approve the 721-C transfer validator for transfers.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool isApproved) {
        isApproved = super.isApprovedForAll(owner, operator);

        if (!isApproved) {
            if (autoApproveTransfersFromValidator) {
                isApproved = operator == address(getTransferValidator());
            }
        }
    }

    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, CreatorTokenBaseV2, AutomaticValidatorTransferApproval {

    /**
     * @notice Overrides behavior of isApprovedFor all such that if an operator is not explicitly approved
     *         for all, the contract owner can optionally auto-approve the 721-C transfer validator for transfers.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool isApproved) {
        isApproved = super.isApprovedForAll(owner, operator);

        if (!isApproved) {
            if (autoApproveTransfersFromValidator) {
                isApproved = operator == address(getTransferValidator());
            }
        }
    }

    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 "./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 "./IEOARegistry.sol";
import "./ITransferSecurityRegistryV2.sol";
import "./ITransferValidator.sol";

interface ICreatorTokenTransferValidatorV2 is ITransferSecurityRegistryV2, 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 "./ITransferSecurityRegistry.sol";

interface ITransferSecurityRegistryV2 is ITransferSecurityRegistry {
    event CreatedList(uint256 indexed id, string name);
    event AppliedListToCollection(address indexed collection, uint120 indexed id);
    event ReassignedListOwnership(uint256 indexed id, address indexed newOwner);
    event AddedAccountToList(ListTypes indexed kind, uint256 indexed id, address indexed account);
    event AddedCodeHashToList(ListTypes indexed kind, uint256 indexed id, bytes32 indexed codehash);
    event RemovedAccountFromList(ListTypes indexed kind, uint256 indexed id, address indexed account);
    event RemovedCodeHashFromList(ListTypes indexed kind, uint256 indexed id, bytes32 indexed codehash);

    function transferSecurityPolicies(TransferSecurityLevels level) external pure returns (CallerConstraints callerConstraints, ReceiverConstraints receiverConstraints);
    function createList(string calldata name) external returns (uint120);
    function createListCopy(string calldata name, uint120 sourceListId) external returns (uint120);
    function reassignOwnershipOfList(uint120 id, address newOwner) external;
    function renounceOwnershipOfList(uint120 id) external;
    function applyListToCollection(address collection, uint120 id) external;
    function getCollectionSecurityPolicyV2(address collection) external view returns (CollectionSecurityPolicyV2 memory);
    function addAccountsToBlacklist(uint120 id, address[] calldata accounts) external;
    function addAccountsToWhitelist(uint120 id, address[] calldata accounts) external;
    function addCodeHashesToBlacklist(uint120 id, bytes32[] calldata codehashes) external;
    function addCodeHashesToWhitelist(uint120 id, bytes32[] calldata codehashes) external;
    function removeAccountsFromBlacklist(uint120 id, address[] calldata accounts) external;
    function removeAccountsFromWhitelist(uint120 id, address[] calldata accounts) external;
    function removeCodeHashesFromBlacklist(uint120 id, bytes32[] calldata codehashes) external;
    function removeCodeHashesFromWhitelist(uint120 id, bytes32[] calldata codehashes) external;
    function getBlacklistedAccounts(uint120 id) external view returns (address[] memory);
    function getWhitelistedAccounts(uint120 id) external view returns (address[] memory);
    function getBlacklistedCodeHashes(uint120 id) external view returns (bytes32[] memory);
    function getWhitelistedCodeHashes(uint120 id) external view returns (bytes32[] memory);
    function isAccountBlacklisted(uint120 id, address account) external view returns (bool);
    function isAccountWhitelisted(uint120 id, address account) external view returns (bool);
    function isCodeHashBlacklisted(uint120 id, bytes32 codehash) external view returns (bool);
    function isCodeHashWhitelisted(uint120 id, bytes32 codehash) external view returns (bool);
    function getBlacklistedAccountsByCollection(address collection) external view returns (address[] memory);
    function getWhitelistedAccountsByCollection(address collection) external view returns (address[] memory);
    function getBlacklistedCodeHashesByCollection(address collection) external view returns (bytes32[] memory);
    function getWhitelistedCodeHashesByCollection(address collection) external view returns (bytes32[] memory);
    function isAccountBlacklistedByCollection(address collection, address account) external view returns (bool);
    function isAccountWhitelistedByCollection(address collection, address account) external view returns (bool);
    function isCodeHashBlacklistedByCollection(address collection, bytes32 codehash) external view returns (bool);
    function isCodeHashWhitelistedByCollection(address collection, bytes32 codehash) 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 "@openzeppelin/contracts/token/common/ERC2981.sol";

/**
 * @title BasicRoyaltiesBase
 * @author Limit Break, Inc.
 * @dev Base functionality of an NFT mix-in contract implementing the most basic form of programmable royalties.
 */
abstract contract BasicRoyaltiesBase is ERC2981 {

    event DefaultRoyaltySet(address indexed receiver, uint96 feeNumerator);
    event TokenRoyaltySet(uint256 indexed tokenId, address indexed receiver, uint96 feeNumerator);

    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual override {
        super._setDefaultRoyalty(receiver, feeNumerator);
        emit DefaultRoyaltySet(receiver, feeNumerator);
    }

    function _setTokenRoyalty(uint256 tokenId, address receiver, uint96 feeNumerator) internal virtual override {
        super._setTokenRoyalty(tokenId, receiver, feeNumerator);
        emit TokenRoyaltySet(tokenId, receiver, feeNumerator);
    }
}

/**
 * @title BasicRoyalties
 * @author Limit Break, Inc.
 * @notice Constructable BasicRoyalties Contract implementation.
 */
abstract contract BasicRoyalties is BasicRoyaltiesBase {
    constructor(address receiver, uint96 feeNumerator) {
        _setDefaultRoyalty(receiver, feeNumerator);
    }
}

/**
 * @title BasicRoyaltiesInitializable
 * @author Limit Break, Inc.
 * @notice Initializable BasicRoyalties Contract implementation to allow for EIP-1167 clones. 
 */
abstract contract BasicRoyaltiesInitializable is BasicRoyaltiesBase {}

// 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";

/**
 * @title AutomaticValidatorTransferApproval
 * @author Limit Break, Inc.
 * @notice Base contract mix-in that provides boilerplate code giving the contract owner the
 *         option to automatically approve a 721-C transfer validator implementation for transfers.
 */
abstract contract AutomaticValidatorTransferApproval is OwnablePermissions {

    /// @dev Emitted when the automatic approval flag is modified by the creator.
    event AutomaticApprovalOfTransferValidatorSet(bool autoApproved);

    /// @dev If true, the collection's transfer validator is automatically approved to transfer holder's tokens.
    bool public autoApproveTransfersFromValidator;

    /**
     * @notice Sets if the transfer validator is automatically approved as an operator for all token owners.
     * 
     * @dev    Throws when the caller is not the contract owner.
     * 
     * @param autoApprove If true, the collection's transfer validator will be automatically approved to
     *                    transfer holder's tokens.
     */
    function setAutomaticApprovalOfTransfersFromValidator(bool autoApprove) external {
        _requireCallerIsContractOwner();
        autoApproveTransfersFromValidator = autoApprove;
        emit AutomaticApprovalOfTransferValidatorSet(autoApprove);
    }
}

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

import "../access/OwnablePermissions.sol";
import "../interfaces/ICreatorToken.sol";
import "../interfaces/ICreatorTokenTransferValidatorV2.sol";
import "./TransferValidation.sol";
import "@openzeppelin/contracts/interfaces/IERC165.sol";

/**
 * @title CreatorTokenBaseV2
 * @author Limit Break, Inc.
 * @notice CreatorTokenBaseV2 is an abstract contract that provides basic functionality for managing token 
 * transfer policies through an implementation of ICreatorTokenTransferValidator/ICreatorTokenTransferValidatorV2. 
 * 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>ICreatorTokenV2: 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 account and codehash blacklists and whitelists.</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>
 *
 * <h4>Compatibility:</h4>
 * <ul>Backward and Forward Compatible - V1/V2 Creator Token Base will work with both V1 and V2 Transfer Validators.</ul>
 */
abstract contract CreatorTokenBaseV2 is OwnablePermissions, TransferValidation, ICreatorToken {

    error CreatorTokenBase__FunctionDeprecatedUseTransferValidatorInstead();
    error CreatorTokenBase__InvalidTransferValidatorContract();
    error CreatorTokenBase__SetTransferValidatorFirst();

    address public constant DEFAULT_TRANSFER_VALIDATOR = address(0x721C00182a990771244d7A71B9FA2ea789A3b433);
    TransferSecurityLevels public constant DEFAULT_TRANSFER_SECURITY_LEVEL = TransferSecurityLevels.Recommended;
    uint120 public constant DEFAULT_LIST_ID = uint120(0);

    TransferValidatorReference private transferValidatorReference;

    /**
     * @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    Throws when the caller is not the contract owner.
     * @dev    May be overridden to change the default behavior of an individual collection.
     */
    function setToDefaultSecurityPolicy() public virtual {
        _requireCallerIsContractOwner();
        setTransferValidator(DEFAULT_TRANSFER_VALIDATOR);

        ICreatorTokenTransferValidatorV2(DEFAULT_TRANSFER_VALIDATOR).
            setTransferSecurityLevelOfCollection(address(this), DEFAULT_TRANSFER_SECURITY_LEVEL);

        ICreatorTokenTransferValidatorV2(DEFAULT_TRANSFER_VALIDATOR).
            applyListToCollection(address(this), DEFAULT_LIST_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.
     * 
     * @dev    Throws when the caller is not the contract owner.
     * 
     * @param validator The address of the transfer validator to set for the collection.
     * @param level     The transfer security level to set for the collection.
     * @param listId    The id of the list to set for the collection.
     */
    function setToCustomValidatorAndSecurityPolicy(
        address validator, 
        TransferSecurityLevels level, 
        uint120 listId
    ) public {
        _requireCallerIsContractOwner();

        setTransferValidator(validator);

        if (validator != address(0)) {
            ICreatorTokenTransferValidator(validator).setTransferSecurityLevelOfCollection(address(this), level);
            ICreatorTokenTransferValidator(validator).setOperatorWhitelistOfCollection(address(this), listId);
        }
    }

    /**
     * @notice Allows the contract owner to set the security policy to their own custom settings.
     * 
     * @dev    Throws when the caller is not the contract owner.
     * @dev    Throws when the transfer validator has not been set.
     * 
     * @param level  The transfer security level to set for the collection.
     * @param listId The id of the list to set for the collection.
     */
    function setToCustomSecurityPolicy(
        TransferSecurityLevels level, 
        uint120 listId
    ) public {
        _requireCallerIsContractOwner();

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

        validator.setTransferSecurityLevelOfCollection(address(this), level);
        validator.setOperatorWhitelistOfCollection(address(this), listId);
    }

    /**
     * @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 or ICreatorTokenTransferValidatorV2 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;
        uint16 version = 0;

        if(transferValidator_.code.length > 0) {
            try IERC165(transferValidator_).supportsInterface(type(ICreatorTokenTransferValidatorV2).interfaceId) 
                returns (bool supportsInterface) {
                isValidTransferValidator = supportsInterface;
                version = 2;
            } catch {}

            if (!isValidTransferValidator) {
                try IERC165(transferValidator_).supportsInterface(type(ICreatorTokenTransferValidator).interfaceId) 
                    returns (bool supportsInterface) {
                    isValidTransferValidator = supportsInterface;
                    version = 1;
                } catch {}
            }
        }

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

        emit TransferValidatorUpdated(address(getTransferValidator()), transferValidator_);

        transferValidatorReference = TransferValidatorReference({
            isInitialized: true,
            version: version,
            transferValidator: transferValidator_
        });
    }

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

        if (address(transferValidator) == address(0)) {
            if (!transferValidatorReference.isInitialized) {
                transferValidator = ICreatorTokenTransferValidator(DEFAULT_TRANSFER_VALIDATOR);
            }
        }
    }

    /**
     * @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) {
        ICreatorTokenTransferValidator transferValidator = getTransferValidator();

        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 {
        ICreatorTokenTransferValidator transferValidator = getTransferValidator();

        if (address(transferValidator) != address(0)) {
            transferValidator.applyCollectionTransferPolicy(caller, from, to);
        }
    }

    /*************************************************************************/
    /*                        BACKWARDS COMPATIBILITY                        */
    /*************************************************************************/

    /**
     * @notice Allows the contract owner to set the security policy to their own custom settings.
     * 
     * @dev    Throws when the caller is not the contract owner.
     * @dev    Throws when the transfer validator has not been set.
     * 
     * @param level                                 The transfer security level to set for the collection.
     * @param operatorWhitelistId                   The id of the allowed operators list to use
                                                    for the collection.
     * @param permittedContractReceiversAllowlistId The id of the permitted contract receivers 
                                                    list to use for the collection.
     */
    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 Allows the contract owner to set the transfer validator to a custom validator contract
     *         and set the security policy to their own custom settings.
     *
     * @dev    Throws when the caller is not the contract owner.
     *
     * @param validator                             The transfer validator to set for the collection.
     * @param level                                 The transfer security level to set for the collection.
     * @param operatorWhitelistId                   The id of the allowed operators list to use
                                                    for the collection.
     * @param permittedContractReceiversAllowlistId The id of the permitted contract receivers 
                                                    list to use for the collection.
     */
    function setToCustomValidatorAndSecurityPolicy(
        address validator, 
        TransferSecurityLevels level, 
        uint120 operatorWhitelistId, 
        uint120 permittedContractReceiversAllowlistId
    ) public {
        _requireCallerIsContractOwner();

        setTransferValidator(validator);

        if (validator != address(0)) {
            ICreatorTokenTransferValidator(validator).
                setTransferSecurityLevelOfCollection(address(this), level);

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

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

    /**
     * @notice Deprecated - Query On Transfer Validator Instead
     */
    function getSecurityPolicy() public view override throwsDeprecatedError returns (CollectionSecurityPolicy memory) {}

    /**
     * @notice Deprecated - Query On Transfer Validator Instead
     */
    function getWhitelistedOperators() public view override throwsDeprecatedError returns (address[] memory) {}

    /**
     * @notice Deprecated - Query On Transfer Validator Instead
     */
    function getPermittedContractReceivers() public view override throwsDeprecatedError returns (address[] memory) {}

    /**
     * @notice Deprecated - Query On Transfer Validator Instead
     */
    function isOperatorWhitelisted(address operator) public view override throwsDeprecatedError returns (bool) {}

    /**
     * @notice Deprecated - Query On Transfer Validator Instead
     */
    function isContractReceiverPermitted(address receiver) public view override throwsDeprecatedError returns (bool) {}

    modifier throwsDeprecatedError() {
        _throwDeprecatedError();
        _;
    }

    function _throwDeprecatedError() internal pure {
        revert CreatorTokenBase__FunctionDeprecatedUseTransferValidatorInstead();
    }
}

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

/** 
 * @dev Used in events to indicate the list type that an account or 
 * @dev codehash is being added to or removed from.
 * 
 * @dev Used in Creator Token Standards V2.
 */
enum ListTypes {
    // 0: List type that will block a matching address/codehash that is on the list.
    Blacklist,

    // 1: List type that will block any matching address/codehash that is not on the list.
    Whitelist
}

/** 
 * @dev Used in events to indicate the list type that event relates to.
 * 
 * @dev Used in Creator Token Standards V1.
 */
enum AllowlistTypes {
    // 0: List type that defines the allowed operator addresses.
    Operators,

    // 1: List type that defines the allowed contract receivers.
    PermittedContractReceivers
}

/**
 @dev Defines the constraints that will be applied for receipt of tokens.
 */
enum ReceiverConstraints {
    // 0: Any address may receive tokens.
    None,

    // 1: Address must not have deployed bytecode.
    NoCode,

    // 2: Address must verify a signature with the EOA Registry to prove it is an EOA.
    EOA
}

/**
 * @dev Defines the constraints that will be applied to the transfer caller.
 */
enum CallerConstraints {
    // 0: Any address may transfer tokens.
    None,

    // 1: Addresses and codehashes not on the blacklist may transfer tokens.
    OperatorBlacklistEnableOTC,

    // 2: Addresses and codehashes on the whitelist and the owner of the token may transfer tokens.
    OperatorWhitelistEnableOTC,

    // 3: Addresses and codehashes on the whitelist may transfer tokens.
    OperatorWhitelistDisableOTC
}

/**
 * @dev Defines constraints for staking tokens in token wrapper contracts.
 */
enum StakerConstraints {
    // 0: No constraints applied to staker.
    None,

    // 1: Transaction originator must be the address that will receive the wrapped tokens.
    CallerIsTxOrigin,

    // 2: Address that will receive the wrapped tokens must be a verified EOA.
    EOA
}

/**
 * @dev Used in both Creator Token Standards V1 and V2.
 * @dev Levels may have different transfer restrictions in V1 and V2. Refer to the 
 * @dev Creator Token Transfer Validator implementation for the version being utilized
 * @dev to determine the effect of the selected level.
 */
enum TransferSecurityLevels {
    Recommended,
    One,
    Two,
    Three,
    Four,
    Five,
    Six,
    Seven,
    Eight
}

/**
 * @dev Defines the caller and receiver constraints for a transfer security level.
 * @dev Used in Creator Token Standards V1.
 * 
 * @dev **callerConstraints**: The restrictions applied to the transfer caller.
 * @dev **receiverConstraints**: The restrictions applied to the transfer recipient.
 */
struct TransferSecurityPolicy {
    CallerConstraints callerConstraints;
    ReceiverConstraints receiverConstraints;
}

/**
 * @dev Defines the security policy for a token collection in Creator Token Standards V1.
 * 
 * @dev **transferSecurityLevel**: The transfer security level set for the collection.
 * @dev **operatorWhitelistId**: The list id for the operator whitelist.
 * @dev **permittedContractReceiversId: The list id for the contracts that are allowed to receive tokens.
 */
struct CollectionSecurityPolicy {
    TransferSecurityLevels transferSecurityLevel;
    uint120 operatorWhitelistId;
    uint120 permittedContractReceiversId;
}

/**
 * @dev Defines the security policy for a token collection in Creator Token Standards V2.
 * 
 * @dev **transferSecurityLevel**: The transfer security level set for the collection.
 * @dev **listId**: The list id that contains the blacklist and whitelist to apply to the collection.
 */
struct CollectionSecurityPolicyV2 {
    TransferSecurityLevels transferSecurityLevel;
    uint120 listId;
}

/** 
 * @dev Used internally in the Creator Token Base V2 contract to pack transfer validator configuration.
 * 
 * @dev **isInitialized**: If not initialized by the collection owner or admin the default validator will be used.
 * @dev **version**: The transfer validator version.
 * @dev **transferValidator**: The address of the transfer validator to use for applying collection security settings.
 */
struct TransferValidatorReference {
    bool isInitialized;
    uint16 version;
    address transferValidator;
}

// 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 {
    
    /// @dev Thrown when the from and to address are both the zero address.
    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) (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`.
     *
     * 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 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
// OpenZeppelin Contracts (last updated v4.7.0) (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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 v4.6.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 *
 * _Available since v4.5._
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/common/ERC2981.sol)

pragma solidity ^0.8.0;

import "../../interfaces/IERC2981.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
 *
 * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
 * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
 * fee is specified in basis points by default.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 *
 * _Available since v4.5._
 */
abstract contract ERC2981 is IERC2981, ERC165 {
    struct RoyaltyInfo {
        address receiver;
        uint96 royaltyFraction;
    }

    RoyaltyInfo private _defaultRoyaltyInfo;
    mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @inheritdoc IERC2981
     */
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) {
        RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId];

        if (royalty.receiver == address(0)) {
            royalty = _defaultRoyaltyInfo;
        }

        uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator();

        return (royalty.receiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
     * override.
     */
    function _feeDenominator() internal pure virtual returns (uint96) {
        return 10000;
    }

    /**
     * @dev Sets the royalty information that all ids in this contract will default to.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: invalid receiver");

        _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Removes default royalty information.
     */
    function _deleteDefaultRoyalty() internal virtual {
        delete _defaultRoyaltyInfo;
    }

    /**
     * @dev Sets the royalty information for a specific token id, overriding the global default.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setTokenRoyalty(
        uint256 tokenId,
        address receiver,
        uint96 feeNumerator
    ) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: Invalid parameters");

        _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Resets royalty information for the token id back to the global default.
     */
    function _resetTokenRoyalty(uint256 tokenId) internal virtual {
        delete _tokenRoyaltyInfo[tokenId];
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.2) (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 v4.8.0) (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 v4.8.0) (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
     * ====
     *
     * [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://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 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 v4.4.1 (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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 // Deprecated in v4.8
    }

    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");
        }
    }

    /**
     * @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) {
        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.
            /// @solidity memory-safe-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 {
            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 = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 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 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 (last updated v4.8.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

// 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 v4.8.0) (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) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 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 10, 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 * 8) < value ? 1 : 0);
        }
    }
}

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

pragma solidity ^0.8.0;

import "./math/Math.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 `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);
    }
}

// SPDX-License-Identifier: CC0-1.0
pragma solidity >=0.8.13;

/**
 * @title IDelegateRegistry
 * @custom:version 2.0
 * @custom:author foobar (0xfoobar)
 * @notice A standalone immutable registry storing delegated permissions from one address to another
 */
interface IDelegateRegistry {
    /// @notice Delegation type, NONE is used when a delegation does not exist or is revoked
    enum DelegationType {
        NONE,
        ALL,
        CONTRACT,
        ERC721,
        ERC20,
        ERC1155
    }

    /// @notice Struct for returning delegations
    struct Delegation {
        DelegationType type_;
        address to;
        address from;
        bytes32 rights;
        address contract_;
        uint256 tokenId;
        uint256 amount;
    }

    /// @notice Emitted when an address delegates or revokes rights for their entire wallet
    event DelegateAll(
        address indexed from,
        address indexed to,
        bytes32 rights,
        bool enable
    );

    /// @notice Emitted when an address delegates or revokes rights for a contract address
    event DelegateContract(
        address indexed from,
        address indexed to,
        address indexed contract_,
        bytes32 rights,
        bool enable
    );

    /// @notice Emitted when an address delegates or revokes rights for an ERC721 tokenId
    event DelegateERC721(
        address indexed from,
        address indexed to,
        address indexed contract_,
        uint256 tokenId,
        bytes32 rights,
        bool enable
    );

    /// @notice Emitted when an address delegates or revokes rights for an amount of ERC20 tokens
    event DelegateERC20(
        address indexed from,
        address indexed to,
        address indexed contract_,
        bytes32 rights,
        uint256 amount
    );

    /// @notice Emitted when an address delegates or revokes rights for an amount of an ERC1155 tokenId
    event DelegateERC1155(
        address indexed from,
        address indexed to,
        address indexed contract_,
        uint256 tokenId,
        bytes32 rights,
        uint256 amount
    );

    /// @notice Thrown if multicall calldata is malformed
    error MulticallFailed();

    /**
     * -----------  WRITE -----------
     */

    /**
     * @notice Call multiple functions in the current contract and return the data from all of them if they all succeed
     * @param data The encoded function data for each of the calls to make to this contract
     * @return results The results from each of the calls passed in via data
     */
    function multicall(
        bytes[] calldata data
    ) external payable returns (bytes[] memory results);

    /**
     * @notice Allow the delegate to act on behalf of `msg.sender` for all contracts
     * @param to The address to act as delegate
     * @param rights Specific subdelegation rights granted to the delegate, pass an empty bytestring to encompass all rights
     * @param enable Whether to enable or disable this delegation, true delegates and false revokes
     * @return delegationHash The unique identifier of the delegation
     */
    function delegateAll(
        address to,
        bytes32 rights,
        bool enable
    ) external payable returns (bytes32 delegationHash);

    /**
     * @notice Allow the delegate to act on behalf of `msg.sender` for a specific contract
     * @param to The address to act as delegate
     * @param contract_ The contract whose rights are being delegated
     * @param rights Specific subdelegation rights granted to the delegate, pass an empty bytestring to encompass all rights
     * @param enable Whether to enable or disable this delegation, true delegates and false revokes
     * @return delegationHash The unique identifier of the delegation
     */
    function delegateContract(
        address to,
        address contract_,
        bytes32 rights,
        bool enable
    ) external payable returns (bytes32 delegationHash);

    /**
     * @notice Allow the delegate to act on behalf of `msg.sender` for a specific ERC721 token
     * @param to The address to act as delegate
     * @param contract_ The contract whose rights are being delegated
     * @param tokenId The token id to delegate
     * @param rights Specific subdelegation rights granted to the delegate, pass an empty bytestring to encompass all rights
     * @param enable Whether to enable or disable this delegation, true delegates and false revokes
     * @return delegationHash The unique identifier of the delegation
     */
    function delegateERC721(
        address to,
        address contract_,
        uint256 tokenId,
        bytes32 rights,
        bool enable
    ) external payable returns (bytes32 delegationHash);

    /**
     * @notice Allow the delegate to act on behalf of `msg.sender` for a specific amount of ERC20 tokens
     * @dev The actual amount is not encoded in the hash, just the existence of a amount (since it is an upper bound)
     * @param to The address to act as delegate
     * @param contract_ The address for the fungible token contract
     * @param rights Specific subdelegation rights granted to the delegate, pass an empty bytestring to encompass all rights
     * @param amount The amount to delegate, > 0 delegates and 0 revokes
     * @return delegationHash The unique identifier of the delegation
     */
    function delegateERC20(
        address to,
        address contract_,
        bytes32 rights,
        uint256 amount
    ) external payable returns (bytes32 delegationHash);

    /**
     * @notice Allow the delegate to act on behalf of `msg.sender` for a specific amount of ERC1155 tokens
     * @dev The actual amount is not encoded in the hash, just the existence of a amount (since it is an upper bound)
     * @param to The address to act as delegate
     * @param contract_ The address of the contract that holds the token
     * @param tokenId The token id to delegate
     * @param rights Specific subdelegation rights granted to the delegate, pass an empty bytestring to encompass all rights
     * @param amount The amount of that token id to delegate, > 0 delegates and 0 revokes
     * @return delegationHash The unique identifier of the delegation
     */
    function delegateERC1155(
        address to,
        address contract_,
        uint256 tokenId,
        bytes32 rights,
        uint256 amount
    ) external payable returns (bytes32 delegationHash);

    /**
     * ----------- CHECKS -----------
     */

    /**
     * @notice Check if `to` is a delegate of `from` for the entire wallet
     * @param to The potential delegate address
     * @param from The potential address who delegated rights
     * @param rights Specific rights to check for, pass the zero value to ignore subdelegations and check full delegations only
     * @return valid Whether delegate is granted to act on the from's behalf
     */
    function checkDelegateForAll(
        address to,
        address from,
        bytes32 rights
    ) external view returns (bool);

    /**
     * @notice Check if `to` is a delegate of `from` for the specified `contract_` or the entire wallet
     * @param to The delegated address to check
     * @param contract_ The specific contract address being checked
     * @param from The cold wallet who issued the delegation
     * @param rights Specific rights to check for, pass the zero value to ignore subdelegations and check full delegations only
     * @return valid Whether delegate is granted to act on from's behalf for entire wallet or that specific contract
     */
    function checkDelegateForContract(
        address to,
        address from,
        address contract_,
        bytes32 rights
    ) external view returns (bool);

    /**
     * @notice Check if `to` is a delegate of `from` for the specific `contract` and `tokenId`, the entire `contract_`, or the entire wallet
     * @param to The delegated address to check
     * @param contract_ The specific contract address being checked
     * @param tokenId The token id for the token to delegating
     * @param from The wallet that issued the delegation
     * @param rights Specific rights to check for, pass the zero value to ignore subdelegations and check full delegations only
     * @return valid Whether delegate is granted to act on from's behalf for entire wallet, that contract, or that specific tokenId
     */
    function checkDelegateForERC721(
        address to,
        address from,
        address contract_,
        uint256 tokenId,
        bytes32 rights
    ) external view returns (bool);

    /**
     * @notice Returns the amount of ERC20 tokens the delegate is granted rights to act on the behalf of
     * @param to The delegated address to check
     * @param contract_ The address of the token contract
     * @param from The cold wallet who issued the delegation
     * @param rights Specific rights to check for, pass the zero value to ignore subdelegations and check full delegations only
     * @return balance The delegated balance, which will be 0 if the delegation does not exist
     */
    function checkDelegateForERC20(
        address to,
        address from,
        address contract_,
        bytes32 rights
    ) external view returns (uint256);

    /**
     * @notice Returns the amount of a ERC1155 tokens the delegate is granted rights to act on the behalf of
     * @param to The delegated address to check
     * @param contract_ The address of the token contract
     * @param tokenId The token id to check the delegated amount of
     * @param from The cold wallet who issued the delegation
     * @param rights Specific rights to check for, pass the zero value to ignore subdelegations and check full delegations only
     * @return balance The delegated balance, which will be 0 if the delegation does not exist
     */
    function checkDelegateForERC1155(
        address to,
        address from,
        address contract_,
        uint256 tokenId,
        bytes32 rights
    ) external view returns (uint256);

    /**
     * ----------- ENUMERATIONS -----------
     */

    /**
     * @notice Returns all enabled delegations a given delegate has received
     * @param to The address to retrieve delegations for
     * @return delegations Array of Delegation structs
     */
    function getIncomingDelegations(
        address to
    ) external view returns (Delegation[] memory delegations);

    /**
     * @notice Returns all enabled delegations an address has given out
     * @param from The address to retrieve delegations for
     * @return delegations Array of Delegation structs
     */
    function getOutgoingDelegations(
        address from
    ) external view returns (Delegation[] memory delegations);

    /**
     * @notice Returns all hashes associated with enabled delegations an address has received
     * @param to The address to retrieve incoming delegation hashes for
     * @return delegationHashes Array of delegation hashes
     */
    function getIncomingDelegationHashes(
        address to
    ) external view returns (bytes32[] memory delegationHashes);

    /**
     * @notice Returns all hashes associated with enabled delegations an address has given out
     * @param from The address to retrieve outgoing delegation hashes for
     * @return delegationHashes Array of delegation hashes
     */
    function getOutgoingDelegationHashes(
        address from
    ) external view returns (bytes32[] memory delegationHashes);

    /**
     * @notice Returns the delegations for a given array of delegation hashes
     * @param delegationHashes is an array of hashes that correspond to delegations
     * @return delegations Array of Delegation structs, return empty structs for nonexistent or revoked delegations
     */
    function getDelegationsFromHashes(
        bytes32[] calldata delegationHashes
    ) external view returns (Delegation[] memory delegations);

    /**
     * ----------- STORAGE ACCESS -----------
     */

    /**
     * @notice Allows external contracts to read arbitrary storage slots
     */
    function readSlot(bytes32 location) external view returns (bytes32);

    /**
     * @notice Allows external contracts to read an arbitrary array of storage slots
     */
    function readSlots(
        bytes32[] calldata locations
    ) external view returns (bytes32[] memory);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol";

interface IStakedToken is IERC721Upgradeable {
    function stakingAddress() external view returns (address);
    function mint(address account_, uint256 tokenId_) external;
    function ensureOwnership(address account_, uint256 tokenId_) external;
}

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

import "@limitbreak/creator-token-standards/src/access/OwnablePermissions.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

abstract contract UriManager is OwnablePermissions {
    using Strings for uint256;

    string internal _prefix;
    string internal _suffix;

    constructor(string memory prefix_, string memory suffix_) {
        _prefix = prefix_;
        _suffix = suffix_;
    }

    function prefix() public view returns (string memory) {
        return _prefix;
    }

    function suffix() public view returns (string memory) {
        return _suffix;
    }

    function _buildUri(uint256 tokenId) internal view returns (string memory) {
        return string(abi.encodePacked(_prefix, tokenId.toString(), _suffix));
    }

    function setPrefix(string calldata prefix_) public {
        _requireCallerIsContractOwner();
        _prefix = prefix_;
    }

    function setSuffix(string calldata suffix_) public {
        _requireCallerIsContractOwner();
        _suffix = suffix_;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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-----Decoded View---------------
Arg [0] : name_ (string): Synergy Seed
Arg [1] : symbol_ (string): (SYNERGY)
Arg [2] : prefix_ (string): https://the-garden-production-e50cfb68e40a.herokuapp.com/api/seeds/synergy/
Arg [3] : suffix_ (string): metadata
Arg [4] : royaltyReceiver_ (address): 0xC2106A1D810918cAfd592Ff24EC255CEd0A4C2BA
Arg [5] : royaltyFeeNumerator_ (uint96): 500
Arg [6] : signer_ (address): 0x6a1564e5a692F425917Ec9177D2b440B9148771B
Arg [7] : stakedSynergySeedAddress_ (address): 0x5F23dFa03ea5DC68e91D1F6B05c145FC3AfB0d76

-----Encoded View---------------
18 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000180
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000200
Arg [4] : 000000000000000000000000c2106a1d810918cafd592ff24ec255ced0a4c2ba
Arg [5] : 00000000000000000000000000000000000000000000000000000000000001f4
Arg [6] : 0000000000000000000000006a1564e5a692f425917ec9177d2b440b9148771b
Arg [7] : 0000000000000000000000005f23dfa03ea5dc68e91d1f6b05c145fc3afb0d76
Arg [8] : 000000000000000000000000000000000000000000000000000000000000000c
Arg [9] : 53796e6572677920536565640000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [11] : 2853594e45524759290000000000000000000000000000000000000000000000
Arg [12] : 000000000000000000000000000000000000000000000000000000000000004b
Arg [13] : 68747470733a2f2f7468652d67617264656e2d70726f64756374696f6e2d6535
Arg [14] : 306366623638653430612e6865726f6b756170702e636f6d2f6170692f736565
Arg [15] : 64732f73796e657267792f000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000008
Arg [17] : 6d65746164617461000000000000000000000000000000000000000000000000