// File: contracts/transfer-proxy/ERC721LazyMintTransferProxy.sol



/*
                     ..........
                 .(MMMMMMMMMMMMMMa,.
              .(MMMMMMMMMMMMMMMMMMMMN,
            .+MMMMMMMMMMMMMMMMMMMMMMMMN,
           .MMMMMMMMMMMMMMMMMMMMMMMMMMMMb
          .MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMh
         .MMMMMMMF TMMMMMMMMMMMMF`   ?MMMMb
         MMMMMMMa, .+MMMMMMMMMM#      ,MMMM,
        .MMMMMMMMMgMMMMMMMMMMMMN,     .MMMM]
        ,MMMMMMMMMMMMMMMMMMMMMB^ .J.JMMMMMMF
       .MMMMMMMMMMMMMMMMMMM#=  .JMMMMMMMMMMF
     .JMMMMMMMMMMMMMMMMMB=   .(MMMMMMMMMMMM>
     MMMMMMMMMMMMMMM#"!    .JMMMMMMMMMMMMMF
    ,MMMMMMMMMMMB"`      .dMMMMMM9`7MMMMM#
     .""""""!         .(MMMMMMMMMMaMMMMM@
                   ..MMMMMMMMMMMMMMMMMM3
                .&MMMMMMMMMMMMMMMMMMM"
                 ?YMMMMMMMMMMMMMM#"`
                     _7"""""""!
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../erc721/interfaces/IERC721LazyMint.sol";
import "../erc721/libraries/MintERC721Lib.sol";
import "../erc721/libraries/SecurityLib.sol";
import "../utils/extensions/OperatorControllerUpgradeable.sol";
import "./interfaces/ITransferProxy.sol";

/**
 * @title Transfer proxy for NFT on Recomet.
 */
contract ERC721LazyMintTransferProxy is
    OperatorControllerUpgradeable,
    ITransferProxy
{
    function __ERC721LazyMintTransferProxy_init(address account)
        external
        initializer
    {
        __Context_init_unchained();
        __Ownable_init_unchained();
        __OperatorController_init_unchained(account);
    }

    function transfer(
        AssetLib.AssetData memory asset,
        address from,
        address to
    ) external override onlyOperator {
        (bool isValid, string memory errorMessage) = _validate(asset, from, to);
        require(isValid, errorMessage);
        (
            address token,
            MintERC721Lib.MintERC721Data memory mintERC721Data,
            SignatureLib.SignatureData memory signatureData
        ) = _decodeAssetTypeData(asset);
        IERC721LazyMint(token).lazyMint(mintERC721Data, signatureData);
    }

    function _decodeAssetTypeData(AssetLib.AssetData memory asset)
        private
        pure
        returns (
            address,
            MintERC721Lib.MintERC721Data memory,
            SignatureLib.SignatureData memory
        )
    {
        (
            address token,
            MintERC721Lib.MintERC721Data memory mintERC721Data,
            SignatureLib.SignatureData memory signatureData
        ) = abi.decode(
                asset.assetType.data,
                (
                    address,
                    MintERC721Lib.MintERC721Data,
                    SignatureLib.SignatureData
                )
            );
        return (token, mintERC721Data, signatureData);
    }

    function _validate(
        AssetLib.AssetData memory asset,
        address from,
        address to
    ) private pure returns (bool, string memory) {
        (
            ,
            MintERC721Lib.MintERC721Data memory mintERC721Data,

        ) = _decodeAssetTypeData(asset);
        if (from == address(0) || from != mintERC721Data.minter) {
            return (
                false,
                "ERC721LazyMintTransferProxy: from verification failed"
            );
        } else if (to == address(0)) {
            return (
                false,
                "ERC721LazyMintTransferProxy: to verification failed"
            );
        }
        return (true, "");
    }

    uint256[50] private __gap;
}

// File: contracts/erc721/interfaces/IERC721LazyMint.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol";
import "../../utils/libraries/PartLib.sol";
import "../libraries/MintERC721Lib.sol";
import "../libraries/SignatureLib.sol";

interface IERC721LazyMint is IERC721Upgradeable {
    event Minted(bytes32 indexed mintERC721Hash);

    function lazyMint(
        MintERC721Lib.MintERC721Data memory mintERC721Data,
        SignatureLib.SignatureData memory signatureData
    ) external;

    function isMinted(uint256 tokenId) external view returns (bool);
}

// File: contracts/erc721/libraries/MintERC721Lib.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../interfaces/IERC721LazyMint.sol";
import "./SecurityLib.sol";
import "./SignatureLib.sol";

library MintERC721Lib {
    bytes4 constant _INTERFACE_ID_LAZY_MINT = type(IERC721LazyMint).interfaceId;

    struct MintERC721Data {
        SecurityLib.SecurityData securityData;
        address minter;
        address to;
        uint256 tokenId;
        bytes data;
    }

    bytes32 private constant _MINT_ERC721_TYPEHASH =
        keccak256(
            bytes(
                "MintERC721Data(SecurityData securityData,address minter,address to,uint256 tokenId,bytes data)SecurityData(uint256 validFrom,uint256 validTo,uint256 salt)"
            )
        );

    function validate(MintERC721Data memory mintERC721Data)
        internal
        view
        returns (bool, string memory)
    {
        address minter = address(uint160(mintERC721Data.tokenId >> 96));
        if (minter != mintERC721Data.minter) {
            return (false, "MintERC721Lib: valid tokenId verification failed");
        }
        (
            bool isSecurityDataValid,
            string memory securityDataErrorMessage
        ) = SecurityLib.validate(mintERC721Data.securityData);
        if (!isSecurityDataValid) {
            return (false, securityDataErrorMessage);
        }
        return (true, "");
    }

    function hash(MintERC721Data memory mintERC721Data)
        internal
        pure
        returns (bytes32)
    {
        return
            keccak256(
                abi.encode(
                    _MINT_ERC721_TYPEHASH,
                    SecurityLib.hash(mintERC721Data.securityData),
                    mintERC721Data.minter,
                    mintERC721Data.to,
                    mintERC721Data.tokenId,
                    keccak256(mintERC721Data.data)
                )
            );
    }
}

// File: contracts/erc721/libraries/SecurityLib.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library SecurityLib {
    struct SecurityData {
        uint256 validFrom;
        uint256 validTo;
        uint256 salt;
    }

    bytes32 private constant _SECURITY_TYPEHASH =
        keccak256(
            abi.encodePacked(
                "SecurityData(uint256 validFrom,uint256 validTo,uint256 salt)"
            )
        );

    function validate(SecurityData memory securityData)
        internal
        view
        returns (bool, string memory)
    {
        if (securityData.validFrom > block.timestamp) {
            return (false, "SecurityLib: valid from verification failed");
        } else if (securityData.validTo < block.timestamp) {
            return (false, "SecurityLib: valid to verification failed");
        }
        return (true, "");
    }

    function hash(SecurityData memory securityData)
        internal
        pure
        returns (bytes32)
    {
        return
            keccak256(
                abi.encode(
                    _SECURITY_TYPEHASH,
                    securityData.validFrom,
                    securityData.validTo,
                    securityData.salt
                )
            );
    }
}

// File: contracts/utils/extensions/OperatorControllerUpgradeable.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";

contract OperatorControllerUpgradeable is OwnableUpgradeable {
    mapping(address => bool) _operators;

    event OperatorSet(address indexed account, bool indexed status);

    modifier onlyOperator() {
        address sender = _msgSender();
        (bool isValid, string memory errorMessage) = _validateOperator(sender);
        require(isValid, errorMessage);
        _;
    }

    modifier onlyOperatorOrOwner() {
        address sender = _msgSender();
        (bool isValid, string memory errorMessage) = _validateOperatorOrOwner(
            sender
        );
        require(isValid, errorMessage);
        _;
    }

    function __OperatorController_init_unchained(address account) internal {
        _setOperator(account, true);
    }

    function addOperator(address account) external onlyOwner {
        _setOperator(account, true);
    }

    function removeOperator(address account) external onlyOwner {
        _setOperator(account, false);
    }

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

    function _setOperator(address account, bool status) internal {
        _operators[account] = status;
        emit OperatorSet(account, status);
    }

    function _isOperator(address account) internal view returns (bool) {
        return _operators[account];
    }

    function _isOperatorOrOwner(address account) internal view returns (bool) {
        return owner() == account || _isOperator(account);
    }

    function _validateOperator(address account)
        internal
        view
        returns (bool, string memory)
    {
        if (!_isOperator(account)) {
            return (
                false,
                "OperatorControllerUpgradeable: operator verification failed"
            );
        }
        return (true, "");
    }

    function _validateOperatorOrOwner(address account)
        internal
        view
        returns (bool, string memory)
    {
        if (!_isOperatorOrOwner(account)) {
            return (
                false,
                "OperatorControllerUpgradeable: operator or owner verification failed"
            );
        }
        return (true, "");
    }

    uint256[50] private __gap;
}

// File: contracts/transfer-proxy/interfaces/ITransferProxy.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/libraries/AssetLib.sol";

interface ITransferProxy {
    function transfer(
        AssetLib.AssetData calldata asset,
        address from,
        address to
    ) external;
}

// File: @openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol



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

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

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

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

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

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

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

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

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

// File: contracts/utils/libraries/PartLib.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./BasisPointLib.sol";

library PartLib {
    bytes32 public constant TYPE_HASH =
        keccak256("PartData(address account,uint256 value)");

    struct PartData {
        address payable account;
        uint256 value;
    }

    function hash(PartData memory part) internal pure returns (bytes32) {
        return keccak256(abi.encode(TYPE_HASH, part.account, part.value));
    }

    function validate(PartData memory part)
        internal
        pure
        returns (bool, string memory)
    {
        if (part.account == address(0x0)) {
            return (false, "PartLib: account verification failed");
        }
        if (part.value == 0 || part.value > BasisPointLib._BPS_BASE) {
            return (false, "PartLib: value verification failed");
        }
        return (true, "");
    }
}

// File: contracts/erc721/libraries/SignatureLib.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library SignatureLib {
    struct SignatureData {
        bytes32 root;
        bytes32[] proof;
        bytes signature;
    }

    bytes32 private constant _SIGNATURE_TYPEHASH =
        keccak256("SignatureData(bytes32 root)");

    function hash(SignatureData memory signatureData)
        internal
        pure
        returns (bytes32)
    {
        return keccak256(abi.encode(_SIGNATURE_TYPEHASH, signatureData.root));
    }
}

// File: @openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.sol



// 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);
}

// File: contracts/utils/libraries/BasisPointLib.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";

library BasisPointLib {
    using SafeMath for uint256;

    uint256 constant _BPS_BASE = 10000;

    function bp(uint256 value, uint256 bpValue)
        internal
        pure
        returns (uint256)
    {
        return value.mul(bpValue).div(_BPS_BASE);
    }
}

// File: @openzeppelin/contracts/utils/math/SafeMath.sol



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

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// File: @openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// File: @openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol



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

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

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

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// File: @openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }

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

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

// File: @openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [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 functionCall(target, data, "Address: low-level call failed");
    }

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

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

// File: contracts/utils/libraries/AssetLib.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library AssetLib {
    bytes4 public constant ETH_ASSET_CLASS = bytes4(keccak256("ETH"));
    bytes4 public constant ERC20_ASSET_CLASS = bytes4(keccak256("ERC20"));
    bytes4 public constant ERC721_ASSET_CLASS = bytes4(keccak256("ERC721"));
    bytes4 public constant ERC1155_ASSET_CLASS = bytes4(keccak256("ERC1155"));
    bytes4 public constant COLLECTION = bytes4(keccak256("COLLECTION"));

    bytes32 constant ASSET_TYPE_TYPEHASH =
        keccak256("AssetType(bytes4 assetClass,bytes data)");
    bytes32 constant ASSET_TYPEHASH =
        keccak256(
            "AssetData(AssetType assetType,uint256 value)AssetType(bytes4 assetClass,bytes data)"
        );

    struct AssetType {
        bytes4 assetClass;
        bytes data;
    }
    struct AssetData {
        AssetType assetType;
        uint256 value;
    }

    function decodeAssetTypeData(AssetType memory assetType)
        internal
        pure
        returns (address, uint256)
    {
        if (assetType.assetClass == AssetLib.ERC20_ASSET_CLASS) {
            address token = abi.decode(assetType.data, (address));
            return (token, 0);
        } else if (
            assetType.assetClass == AssetLib.ERC721_ASSET_CLASS ||
            assetType.assetClass == AssetLib.ERC1155_ASSET_CLASS
        ) {
            (address token, uint256 tokenId) = abi.decode(
                assetType.data,
                (address, uint256)
            );
            return (token, tokenId);
        }
        return (address(0), 0);
    }

    function hash(AssetType memory assetType) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    ASSET_TYPE_TYPEHASH,
                    assetType.assetClass,
                    keccak256(assetType.data)
                )
            );
    }

    function hash(AssetData memory asset) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encode(ASSET_TYPEHASH, hash(asset.assetType), asset.value)
            );
    }
}