// 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 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 functionCall(target, data, "Address: low-level call failed");
    }

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

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

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

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

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

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

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

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

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

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

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

/**
 * @title AdminController
 * AdminController -This contract manages the admin.
 */
abstract contract AdminController is Context, Ownable {
    mapping(address => bool) private _admins;

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

    constructor(address account) {
        _setAdmin(account, true);
    }

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

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

    function addAdmin(address account) external onlyOwner {
        _setAdmin(account, true);
    }

    function removeAdmin(address account) external onlyAdminOrOwner {
        _setAdmin(account, false);
    }

    function isAdmin(address account) external view returns (bool) {
        return _isAdmin(account);
    }

    function _setAdmin(address account, bool status) internal {
        _admins[account] = status;
        emit AdminSet(account, status);
    }

    function _isAdmin(address account) internal view returns (bool) {
        return _admins[account];
    }

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

    function _validateAdmin(address account)
        internal
        view
        returns (bool, string memory)
    {
        if (!_isAdmin(account)) {
            return (false, "AdminController: admin verification failed");
        }
        return (true, "");
    }

    function _validateAdminOrOwner(address account)
        internal
        view
        returns (bool, string memory)
    {
        if (!_isAdminOrOwner(account)) {
            return (
                false,
                "AdminController: admin or owner verification failed"
            );
        }
        return (true, "");
    }
}

// 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)
            );
    }
}

// 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);
    }
}

// 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 v4.5.0) (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
    }

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

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

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

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = 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 (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

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

        return (signer, RecoverError.NoError);
    }

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/utils/ERC1155Holder.sol)

pragma solidity ^0.8.0;

import "./ERC1155Receiver.sol";

/**
 * Simple implementation of `ERC1155Receiver` that will allow a contract to hold ERC1155 tokens.
 *
 * IMPORTANT: When inheriting this contract, you must include a way to use the received tokens, otherwise they will be
 * stuck.
 *
 * @dev _Available since v3.1._
 */
contract ERC1155Holder is ERC1155Receiver {
    function onERC1155Received(
        address,
        address,
        uint256,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155Received.selector;
    }

    function onERC1155BatchReceived(
        address,
        address,
        uint256[] memory,
        uint256[] memory,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155BatchReceived.selector;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/utils/ERC1155Receiver.sol)

pragma solidity ^0.8.0;

import "../IERC1155Receiver.sol";
import "../../../utils/introspection/ERC165.sol";

/**
 * @dev _Available since v3.1._
 */
abstract contract ERC1155Receiver is ERC165, IERC1155Receiver {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
    }
}

// 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 (metatx/ERC2771Context.sol)

pragma solidity ^0.8.0;

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

/**
 * @title ERC2771Context
 * ERC2771Context - This contract manages the ERC2771 for market.
 */
abstract contract ERC2771Context is Context {
    address private _trustedForwarder;

    constructor(address trustedForwarder) {
        _trustedForwarder = trustedForwarder;
    }

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/utils/ERC721Holder.sol)

pragma solidity ^0.8.0;

import "../IERC721Receiver.sol";

/**
 * @dev Implementation of the {IERC721Receiver} interface.
 *
 * Accepts all token transfers.
 * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
 */
contract ERC721Holder is IERC721Receiver {
    /**
     * @dev See {IERC721Receiver-onERC721Received}.
     *
     * Always returns `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address,
        address,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC721Received.selector;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

pragma solidity ^0.8.0;

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

// 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 v4.5.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface 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 `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// 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;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "./libraries/OrderLib.sol";
import "./libraries/OrderExtLib.sol";
import "./extensions/ERC2771Context.sol";
import "./extensions/MarketEscrow.sol";
import "./extensions/MarketTxValidatable.sol";

/**
 * @title MarketBase
 * MarketBase - The Market's central contract.
 */
abstract contract MarketBase is
    ERC2771Context,
    ReentrancyGuard,
    MarketEscrow,
    MarketTxValidatable
{
    using SafeMath for uint256;

    /**
     * @notice Set immutable variables for the implementation contract.
     * @dev Using immutable instead of constants allows us to use different values on testnet.
     * @param name The user readable name of the signing domain.
     * @param version The current major version of the signing domain.
     * @param trustedForwarder The Recomet TrustedForwarder address.
     */
    constructor(
        string memory name,
        string memory version,
        address trustedForwarder
    )
        EIP712(name, version)
        ERC2771Context(trustedForwarder)
        Ownable()
        ReentrancyGuard()
        AdminController(_msgSender())
    {}

    /**
     * @notice Set the price of the order and escrow to the market contract.
     * The Deposit is held in escrow until the order is finalized or canceled.
     * @param order The information of order.
     * @param signatureLeft The signature of the maker.
     * @param signatureRight The signature of taker or forwarder.
     */
    function createOrder(
        OrderLib.OrderData memory order,
        bytes memory signatureLeft,
        bytes memory signatureRight
    ) external payable nonReentrant {
        (bool isValid, string memory errorMessage) = _validateFull(
            OrderLib.CREATE_ORDER_TYPE,
            order,
            signatureLeft,
            signatureRight
        );
        require(isValid, errorMessage);
        bytes32 orderId = OrderLib.hashKey(order);
        _createDeposit(orderId, order.taker, order.takeAsset);
    }

    /**
     * @notice Update the price of the order, refund the old currency and escrow the new currency to the market contract.
     * The Deposit is held in escrow until the order is finalized or canceled.
     * @param order The information of order.
     * @param signatureLeft The signature of the maker.
     * @param signatureRight The signature of taker or forwarder.
     */
    function updateOrder(
        OrderLib.OrderData memory order,
        bytes memory signatureLeft,
        bytes memory signatureRight
    ) external payable nonReentrant {
        (bool isValid, string memory errorMessage) = _validateFull(
            OrderLib.UPDATE_ORDER_TYPE,
            order,
            signatureLeft,
            signatureRight
        );
        require(isValid, errorMessage);
        bytes32 orderId = OrderLib.hashKey(order);
        _updateDeposit(orderId, order.taker, order.takeAsset);
    }

    /**
     * @notice Cancel the order and refund the currency in the market contract.
     * @param order The information of order.
     * @param signatureLeft The signature of the maker.
     * @param signatureRight The signature of taker or forwarder.
     */
    function cancelOrder(
        OrderLib.OrderData memory order,
        bytes memory signatureLeft,
        bytes memory signatureRight
    ) external nonReentrant {
        bytes32 orderId = OrderLib.hashKey(order);
        AssetLib.AssetData memory asset = getDeposit(orderId);
        if (
            asset.value != 0 &&
            asset.assetType.assetClass != bytes4(0) &&
            order.end < block.timestamp
        ) {
            (bool isValid, string memory errorMessage) = _validateOrderAndSig(
                OrderLib.CANCEL_ORDER_TYPE,
                order,
                order.taker,
                signatureRight
            );
            require(isValid, errorMessage);
        } else {
            (bool isValid, string memory errorMessage) = _validateFull(
                OrderLib.CANCEL_ORDER_TYPE,
                order,
                signatureLeft,
                signatureRight
            );
            require(isValid, errorMessage);
        }
        _withdraw(orderId, order.taker);
    }

    /**
     * @notice Finalize the order and allows for payment and NFT to be sent.
     * @param order The information of order.
     * @param signatureLeft The signature of the maker.
     * @param signatureRight The signature of taker or forwarder.
     */
    function finalizeOrder(
        OrderLib.OrderData memory order,
        bytes memory signatureLeft,
        bytes memory signatureRight
    ) external payable nonReentrant {
        OrderExtLib.OrderExtData memory data = OrderExtLib.decodeOrderExtData(
            order.data
        );
        (bool isValid, string memory errorMessage) = _validateFull(
            OrderLib.FINALIZE_ORDER_TYPE,
            order,
            signatureLeft,
            signatureRight
        );
        require(isValid, errorMessage);
        bytes32 orderId = OrderLib.hashKey(order);
        _transfer(order.makeAsset, order.maker, order.taker);
        _pay(orderId, data.payouts, data.fees);
    }

    /**
     * @notice Get the version of order.
     */
    function getVersion() external pure returns (bytes4) {
        return OrderExtLib.VERSION;
    }

    function _msgSender()
        internal
        view
        override(Context, ERC2771Context)
        returns (address)
    {
        return super._msgSender();
    }

    function _msgData()
        internal
        view
        override(Context, ERC2771Context)
        returns (bytes memory)
    {
        return super._msgData();
    }

    /**
     * @notice Verify order and signature.
     * @param orderType The type of order.
     * @param order The information of order.
     * @param signatureLeft The signature of the maker.
     * @param signatureRight The signature of taker or forwarder.
     */
    function _validateFull(
        bytes4 orderType,
        OrderLib.OrderData memory order,
        bytes memory signatureLeft,
        bytes memory signatureRight
    ) internal view returns (bool, string memory) {
        (bool isOrderValid, string memory orderErrorMessage) = _validateOrder(
            orderType,
            order
        );
        if (!isOrderValid) {
            return (isOrderValid, orderErrorMessage);
        }
        (
            bool isMakerSigValid,
            string memory makerSigErrorMessage
        ) = _validateSig(order, order.maker, signatureLeft);
        if (!isMakerSigValid) {
            return (isMakerSigValid, makerSigErrorMessage);
        }
        (
            bool isTakerSigValid,
            string memory takerSigErrorMessage
        ) = _validateSig(order, order.taker, signatureRight);
        if (!isTakerSigValid && orderType != OrderLib.FINALIZE_ORDER_TYPE) {
            return (isTakerSigValid, takerSigErrorMessage);
        } else if (
            !isTakerSigValid && orderType == OrderLib.FINALIZE_ORDER_TYPE
        ) {
            OrderExtLib.OrderExtData memory dataExt = OrderExtLib
                .decodeOrderExtData(order.data);
            (
                bool isForwarderSigValid,
                string memory forwarderSigErrorMessage
            ) = _validateSig(order, dataExt.forwarder, signatureRight);
            if (!isForwarderSigValid) {
                return (isForwarderSigValid, forwarderSigErrorMessage);
            }
        }
        return (true, "");
    }

    /**
     * @notice Verify order and signature.
     * @param orderType The type of order.
     * @param order The information of order.
     * @param signer The address of the signer.
     * @param signature The signature of signer.
     */
    function _validateOrderAndSig(
        bytes4 orderType,
        OrderLib.OrderData memory order,
        address signer,
        bytes memory signature
    ) internal view returns (bool, string memory) {
        (bool isOrderValid, string memory orderErrorMessag) = _validateOrder(
            orderType,
            order
        );
        if (!isOrderValid) {
            return (isOrderValid, orderErrorMessag);
        }
        (bool isSigValid, string memory sigErrorMessage) = _validateSig(
            order,
            signer,
            signature
        );
        if (!isSigValid) {
            return (isSigValid, sigErrorMessage);
        }
        return (true, "");
    }

    /**
     * @notice Verify order.
     * @param orderType The type of order.
     * @param order The information of order.
     */
    function _validateOrder(bytes4 orderType, OrderLib.OrderData memory order)
        private
        view
        returns (bool, string memory)
    {
        bool isTargetOrderType = orderType == OrderLib.CREATE_ORDER_TYPE ||
            orderType == OrderLib.UPDATE_ORDER_TYPE ||
            orderType == OrderLib.FINALIZE_ORDER_TYPE;
        if (order.orderType != orderType) {
            return (false, "MarketBase: orderType verification failed");
        } else if (isTargetOrderType && order.start > block.timestamp) {
            return (false, "MarketBase: start verification failed");
        } else if (isTargetOrderType && order.end < block.timestamp) {
            return (false, "MarketBase: end verification failed");
        }
        return OrderLib.validate(order);
    }

    /**
     * @notice Verify signature.
     * @param order The information of order.
     * @param signer The address of the signer.
     * @param signature The signature of signer.
     */
    function _validateSig(
        OrderLib.OrderData memory order,
        address signer,
        bytes memory signature
    ) private view returns (bool, string memory) {
        bytes32 hash = OrderLib.hash(order);
        (bool isValid, string memory errorMessage) = _validateTx(
            signer,
            hash,
            signature
        );
        return (isValid, errorMessage);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "../../utils/libraries/AssetLib.sol";
import "../../utils/libraries/BasisPointLib.sol";
import "../../utils/libraries/PartLib.sol";
import "./MarketTransfer.sol";

/**
 * @title MarketEscrow
 * MarketEscrow - This contract manages the escrow for Market.
 */
abstract contract MarketEscrow is MarketTransfer {
    using BasisPointLib for uint256;
    using SafeMath for uint256;

    enum UpdateAssetStatus {
        TypeChange,
        ValueChangeUp,
        ValueChangeDown,
        NoChange
    }

    mapping(bytes32 => AssetLib.AssetData) private _deposits;
    mapping(bytes32 => bool) private _completed;

    event Deposited(
        bytes32 id,
        address indexed payee,
        AssetLib.AssetData asset
    );
    event Paid(
        bytes32 id,
        PartLib.PartData[] payouts,
        PartLib.PartData[] fees,
        AssetLib.AssetData asset
    );
    event Withdrawn(
        bytes32 id,
        address indexed payee,
        AssetLib.AssetData asset
    );

    modifier whenEscrowDeposited(bytes32 id) {
        require(
            getDeposit(id).value != 0 &&
                getDeposit(id).assetType.assetClass != bytes4(0),
            "MarketEscrow: escrow already not depositd"
        );
        _;
    }

    modifier whenNotEscrowCompleted(bytes32 id) {
        require(!getCompleted(id), "MarketEscrow: escrow already completed");
        _;
    }

    function getCompleted(bytes32 id) public view returns (bool) {
        return _completed[id];
    }

    function getDeposit(bytes32 id)
        public
        view
        returns (AssetLib.AssetData memory)
    {
        return _deposits[id];
    }

    function _createDeposit(
        bytes32 id,
        address payee,
        AssetLib.AssetData memory asset
    ) internal whenNotEscrowCompleted(id) {
        _setDeposit(id, asset);
        _transfer(asset, payee, address(this));
        emit Deposited(id, payee, asset);
    }

    function _updateDeposit(
        bytes32 id,
        address payee,
        AssetLib.AssetData memory newAsset
    ) internal whenEscrowDeposited(id) whenNotEscrowCompleted(id) {
        AssetLib.AssetData memory currentAsset = getDeposit(id);
        UpdateAssetStatus status = _matchUpdateAssetStatus(
            currentAsset,
            newAsset
        );
        if (status == UpdateAssetStatus.TypeChange) {
            _setDeposit(id, newAsset);
            _transfer(currentAsset, address(this), payee);
            _transfer(newAsset, payee, address(this));
        } else if (status == UpdateAssetStatus.ValueChangeDown) {
            uint256 diffValue = currentAsset.value.sub(newAsset.value);
            _setDeposit(id, newAsset);
            _transfer(
                AssetLib.AssetData(currentAsset.assetType, diffValue),
                address(this),
                payee
            );
        } else if (status == UpdateAssetStatus.ValueChangeUp) {
            uint256 diffValue = newAsset.value.sub(currentAsset.value);
            _setDeposit(id, newAsset);
            _transfer(
                AssetLib.AssetData(currentAsset.assetType, diffValue),
                payee,
                address(this)
            );
        } else {
            revert("MarketEscrow: no asset change");
        }
        emit Deposited(id, payee, newAsset);
    }

    function _pay(
        bytes32 id,
        PartLib.PartData[] memory payouts,
        PartLib.PartData[] memory fees
    ) internal whenEscrowDeposited(id) whenNotEscrowCompleted(id) {
        AssetLib.AssetData memory asset = _deposits[id];
        _setCompleted(id, true);
        uint256 rest = asset.value;
        (rest, ) = _transferFees(
            asset.assetType,
            rest,
            asset.value,
            address(this),
            fees
        );
        _transferPayouts(asset.assetType, rest, address(this), payouts);
        emit Paid(id, payouts, fees, asset);
    }

    function _withdraw(bytes32 id, address payee)
        internal
        whenEscrowDeposited(id)
        whenNotEscrowCompleted(id)
    {
        AssetLib.AssetData memory asset = _deposits[id];
        _setCompleted(id, true);
        _transfer(asset, address(this), payee);
        emit Withdrawn(id, payee, asset);
    }

    function _transferFees(
        AssetLib.AssetType memory assetType,
        uint256 rest,
        uint256 amount,
        address from,
        PartLib.PartData[] memory fees
    ) internal returns (uint256 restValue, uint256 totalFees) {
        totalFees = 0;
        restValue = rest;
        for (uint256 i = 0; i < fees.length; i++) {
            totalFees = totalFees.add(fees[i].value);
            (uint256 newRestValue, uint256 feeValue) = _subFeeInBp(
                restValue,
                amount,
                fees[i].value
            );
            restValue = newRestValue;
            if (feeValue > 0) {
                _transfer(
                    AssetLib.AssetData(assetType, feeValue),
                    from,
                    fees[i].account
                );
            }
        }
    }

    function _transferPayouts(
        AssetLib.AssetType memory assetType,
        uint256 amount,
        address from,
        PartLib.PartData[] memory payouts
    ) internal {
        uint256 sumBps = 0;
        uint256 restValue = amount;
        for (uint256 i = 0; i < payouts.length - 1; i++) {
            uint256 currentAmount = amount.bp(payouts[i].value);
            sumBps = sumBps.add(payouts[i].value);
            if (currentAmount > 0) {
                restValue = restValue.sub(currentAmount);
                _transfer(
                    AssetLib.AssetData(assetType, currentAmount),
                    from,
                    payouts[i].account
                );
            }
        }
        PartLib.PartData memory lastPayout = payouts[payouts.length - 1];
        sumBps = sumBps.add(lastPayout.value);
        require(
            sumBps == 10000,
            "MarketEscrow: sum payouts bps not equal 100%"
        );
        if (restValue > 0) {
            _transfer(
                AssetLib.AssetData(assetType, restValue),
                from,
                lastPayout.account
            );
        }
    }

    function _matchUpdateAssetStatus(
        AssetLib.AssetData memory currentAsset,
        AssetLib.AssetData memory newAsset
    ) internal pure returns (UpdateAssetStatus) {
        bool matchAssetClass = currentAsset.assetType.assetClass ==
            newAsset.assetType.assetClass;
        bool matchToken;
        bool matchTokenId;
        if (
            matchAssetClass &&
            currentAsset.assetType.assetClass == AssetLib.ERC20_ASSET_CLASS
        ) {
            (address currentToken, ) = AssetLib.decodeAssetTypeData(
                currentAsset.assetType
            );
            (address newToken, ) = AssetLib.decodeAssetTypeData(
                newAsset.assetType
            );
            matchToken = currentToken == newToken;
        } else if (
            matchAssetClass &&
            (currentAsset.assetType.assetClass == AssetLib.ERC721_ASSET_CLASS ||
                currentAsset.assetType.assetClass ==
                AssetLib.ERC1155_ASSET_CLASS)
        ) {
            (address currentToken, uint256 currentTokenId) = AssetLib
                .decodeAssetTypeData(currentAsset.assetType);
            (address newToken, uint256 newTokenId) = AssetLib
                .decodeAssetTypeData(newAsset.assetType);
            matchToken = currentToken == newToken;
            matchTokenId = currentTokenId == newTokenId;
        }
        if (
            !matchAssetClass ||
            (!matchToken &&
                (currentAsset.assetType.assetClass ==
                    AssetLib.ERC20_ASSET_CLASS ||
                    currentAsset.assetType.assetClass ==
                    AssetLib.ERC721_ASSET_CLASS ||
                    currentAsset.assetType.assetClass ==
                    AssetLib.ERC1155_ASSET_CLASS)) ||
            (!matchTokenId &&
                (currentAsset.assetType.assetClass ==
                    AssetLib.ERC721_ASSET_CLASS ||
                    currentAsset.assetType.assetClass ==
                    AssetLib.ERC1155_ASSET_CLASS))
        ) {
            return UpdateAssetStatus.TypeChange;
        } else {
            if (currentAsset.value > newAsset.value) {
                return UpdateAssetStatus.ValueChangeDown;
            } else if (currentAsset.value < newAsset.value) {
                return UpdateAssetStatus.ValueChangeUp;
            }
            return UpdateAssetStatus.NoChange;
        }
    }

    function _setDeposit(bytes32 id, AssetLib.AssetData memory asset) internal {
        _deposits[id] = asset;
    }

    function _setCompleted(bytes32 id, bool status) internal {
        _completed[id] = status;
    }

    function _subFeeInBp(
        uint256 value,
        uint256 total,
        uint256 feeInBp
    ) internal pure returns (uint256 newValue, uint256 realFee) {
        return _subFee(value, total.bp(feeInBp));
    }

    function _subFee(uint256 value, uint256 fee)
        internal
        pure
        returns (uint256 newValue, uint256 realFee)
    {
        if (value > fee) {
            newValue = value.sub(fee);
            realFee = fee;
        } else {
            newValue = 0;
            realFee = value;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/utils/ERC721Holder.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/token/ERC1155/utils/ERC1155Holder.sol";
import "../../transfer-proxy/interfaces/ITransferProxy.sol";
import "../../utils/libraries/AssetLib.sol";
import "./AdminController.sol";

/**
 * @title MarketTransfer
 * MarketTransfer - This contract manages the transfer for Market.
 */
abstract contract MarketTransfer is
    ERC721Holder,
    ERC1155Holder,
    AdminController
{
    using Address for address;
    using SafeERC20 for IERC20;

    mapping(bytes4 => address) private _proxies;

    event ProxyUpdated(bytes4 indexed assetType, address proxy);
    event Transferred(AssetLib.AssetData asset, address from, address to);

    function setTransferProxy(bytes4 assetType, address proxy)
        external
        onlyAdmin
    {
        require(
            proxy.isContract(),
            "MarketTransfer: Address is not a contract"
        );
        _proxies[assetType] = proxy;
        emit ProxyUpdated(assetType, proxy);
    }

    function getTransferProxy(bytes4 assetType) public view returns (address) {
        return _proxies[assetType];
    }

    function _transfer(
        AssetLib.AssetData memory asset,
        address from,
        address to
    ) internal {
        if (asset.assetType.assetClass == AssetLib.ETH_ASSET_CLASS) {
            _ethTransfer(from, to, asset.value);
        } else if (asset.assetType.assetClass == AssetLib.ERC20_ASSET_CLASS) {
            (address token, ) = AssetLib.decodeAssetTypeData(asset.assetType);
            _erc20safeTransferFrom(token, from, to, asset.value);
        } else if (asset.assetType.assetClass == AssetLib.ERC721_ASSET_CLASS) {
            (address token, uint256 tokenId) = AssetLib.decodeAssetTypeData(
                asset.assetType
            );
            require(asset.value == 1, "MarketTransfer: erc721 value error");
            _erc721safeTransferFrom(token, from, to, tokenId);
        } else if (asset.assetType.assetClass == AssetLib.ERC1155_ASSET_CLASS) {
            (address token, uint256 tokenId) = AssetLib.decodeAssetTypeData(
                asset.assetType
            );
            _erc1155safeTransferFrom(token, from, to, tokenId, asset.value);
        } else {
            _transferProxyTransfer(asset, from, to);
        }
        emit Transferred(asset, from, to);
    }

    function _ethTransfer(
        address from,
        address to,
        uint256 value
    ) private {
        if (from == address(this)) {
            require(
                address(this).balance >= value,
                "MarketTransfer: insufficient balance"
            );
        } else {
            require(msg.value >= value, "MarketTransfer: insufficient balance");
        }
        if (to != address(this)) {
            (bool success, ) = to.call{value: value}("");
            require(
                success,
                "MarketTransfer: unable to send value, recipient may have reverted"
            );
        }
    }

    function _erc20safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) private {
        if (from == address(this)) {
            IERC20(token).safeTransfer(to, value);
        } else {
            IERC20(token).safeTransferFrom(from, to, value);
        }
    }

    function _erc721safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 tokenId
    ) private {
        IERC721(token).safeTransferFrom(from, to, tokenId);
    }

    function _erc1155safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 id,
        uint256 value
    ) private {
        IERC1155(token).safeTransferFrom(from, to, id, value, "");
    }

    function _transferProxyTransfer(
        AssetLib.AssetData memory asset,
        address from,
        address to
    ) private {
        ITransferProxy(getTransferProxy(asset.assetType.assetClass)).transfer(
            asset,
            from,
            to
        );
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol";

/**
 * @title MarketTxValidatable
 * MarketTxValidatable - This contract manages the tx for market.
 */
abstract contract MarketTxValidatable is Context, EIP712 {
    using SignatureChecker for address;

    function _validateTx(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool, string memory) {
        if (signature.length == 0) {
            address sender = _msgSender();
            if (signer != sender) {
                return (
                    false,
                    "MarketTxValidatable: sender verification failed"
                );
            }
        } else {
            if (
                !signer.isValidSignatureNow(_hashTypedDataV4(hash), signature)
            ) {
                return (
                    false,
                    "MarketTxValidatable: signature verification failed"
                );
            }
        }
        return (true, "");
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

library OrderExtLib {
    bytes4 public constant VERSION = bytes4(keccak256("V1"));

    bytes32 constant ORDER_EXT_TYPEHASH =
        keccak256(
            "OrderExtData(bytes4 version,address forwarder,PartData[] payouts,PartData[] fees)PartData(address account,uint256 value)"
        );

    struct OrderExtData {
        bytes4 version;
        address forwarder;
        PartLib.PartData[] payouts;
        PartLib.PartData[] fees;
    }

    function hash(OrderExtData memory orderExt)
        internal
        pure
        returns (bytes32)
    {
        bytes32[] memory payoutsBytes = new bytes32[](orderExt.payouts.length);
        for (uint256 i = 0; i < orderExt.payouts.length; i++) {
            payoutsBytes[i] = PartLib.hash(orderExt.payouts[i]);
        }
        bytes32[] memory feesBytes = new bytes32[](orderExt.fees.length);
        for (uint256 i = 0; i < orderExt.fees.length; i++) {
            feesBytes[i] = PartLib.hash(orderExt.fees[i]);
        }
        return
            keccak256(
                abi.encode(
                    ORDER_EXT_TYPEHASH,
                    orderExt.version,
                    orderExt.forwarder,
                    keccak256(abi.encodePacked(payoutsBytes)),
                    keccak256(abi.encodePacked(feesBytes))
                )
            );
    }

    function decodeOrderExtData(bytes memory data)
        internal
        pure
        returns (OrderExtData memory)
    {
        return abi.decode(data, (OrderExtData));
    }

    function validate(OrderExtData memory orderExt)
        internal
        pure
        returns (bool, string memory)
    {
        if (orderExt.version != VERSION) {
            return (false, "OrderExtLib: version validation failed");
        } else if (orderExt.payouts.length == 0) {
            return (false, "OrderExtLib: payouts validation failed");
        }
        return (true, "");
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

library OrderLib {
    bytes4 public constant CREATE_ORDER_TYPE = bytes4(keccak256("CREATE"));
    bytes4 public constant UPDATE_ORDER_TYPE = bytes4(keccak256("UPDATE"));
    bytes4 public constant CANCEL_ORDER_TYPE = bytes4(keccak256("CANCEL"));
    bytes4 public constant FINALIZE_ORDER_TYPE = bytes4(keccak256("FINALIZE"));

    bytes32 constant ORDER_TYPEHASH =
        keccak256(
            "OrderData(address maker,AssetData makeAsset,address taker,AssetData takeAsset,uint256 salt,uint256 start,uint256 end,bytes4 orderType,bytes data)AssetData(AssetType assetType,uint256 value)AssetType(bytes4 assetClass,bytes data)"
        );

    struct OrderData {
        address maker;
        AssetLib.AssetData makeAsset;
        address taker;
        AssetLib.AssetData takeAsset;
        uint256 salt;
        uint256 start;
        uint256 end;
        bytes4 orderType;
        bytes data;
    }

    function hashKey(OrderData memory order) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    order.maker,
                    order.taker,
                    order.salt,
                    order.start,
                    order.end,
                    order.data
                )
            );
    }

    function hash(OrderData memory order) internal pure returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    ORDER_TYPEHASH,
                    order.maker,
                    AssetLib.hash(order.makeAsset),
                    order.taker,
                    AssetLib.hash(order.takeAsset),
                    order.salt,
                    order.start,
                    order.end,
                    order.orderType,
                    keccak256(order.data)
                )
            );
    }

    function validate(OrderData memory order)
        internal
        pure
        returns (bool, string memory)
    {
        if (order.maker == address(0)) {
            return (false, "OrderLib: maker validation failed");
        } else if (
            order.makeAsset.value == 0 ||
            order.makeAsset.assetType.assetClass == bytes4(0)
        ) {
            return (false, "OrderLib: makeAsset validation failed");
        } else if (order.taker == address(0)) {
            return (false, "OrderLib: taker validation failed");
        } else if (
            order.takeAsset.value == 0 ||
            order.takeAsset.assetType.assetClass == bytes4(0)
        ) {
            return (false, "OrderLib: takeAsset validation failed");
        } else if (order.salt == 0) {
            return (false, "OrderLib: salt validation failed");
        } else if (order.start == 0) {
            return (false, "OrderLib: start validation failed");
        } else if (order.end == 0) {
            return (false, "OrderLib: end validation failed");
        } else if (
            !(order.orderType == CREATE_ORDER_TYPE ||
                order.orderType == UPDATE_ORDER_TYPE ||
                order.orderType == CANCEL_ORDER_TYPE ||
                order.orderType == FINALIZE_ORDER_TYPE)
        ) {
            return (false, "OrderLib: orderType validation failed");
        }
        return OrderExtLib.validate(OrderExtLib.decodeOrderExtData(order.data));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 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);
    }
}

// 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, "");
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

/*
                     ..........
                 .(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 "./MarketBase.sol";

/**
 * @title A request market for NFTs on Recomet.
 * @notice The Recomet Request Marketplace is a contract for requesters to request and trade NFTs.
 * It supports buying and selling by request.
 */
contract RequestMarketV1 is MarketBase {
    /**
     * @notice Set immutable variables for the implementation contract.
     * @dev Using immutable instead of constants allows us to use different values on testnet.
     * @param name The user readable name of the signing domain.
     * @param version The current major version of the signing domain.
     * @param trustedForwarder The Recomet TrustedForwarder address.
     */
    constructor(
        string memory name,
        string memory version,
        address trustedForwarder
    ) MarketBase(name, version, trustedForwarder) {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

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

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

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

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

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

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

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

// 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;
        }
    }
}

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

pragma solidity ^0.8.0;

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

/**
 * @dev Signature verification helper that can be used instead of `ECDSA.recover` to seamlessly support both ECDSA
 * signatures from externally owned accounts (EOAs) as well as ERC1271 signatures from smart contract wallets like
 * Argent and Gnosis Safe.
 *
 * _Available since v4.1._
 */
library SignatureChecker {
    /**
     * @dev Checks if a signature is valid for a given signer and data hash. If the signer is a smart contract, the
     * signature is validated against that smart contract using ERC1271, otherwise it's validated using `ECDSA.recover`.
     *
     * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus
     * change through time. It could return true at block N and false at block N+1 (or the opposite).
     */
    function isValidSignatureNow(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool) {
        (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature);
        if (error == ECDSA.RecoverError.NoError && recovered == signer) {
            return true;
        }

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-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);
    }
}

{
  "compilationTarget": {
    "contracts/market/RequestMarketV1.sol": "RequestMarketV1"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}