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// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./features/ContractOnlyEthRecipient.sol";
import "./interfaces/ISwapExecutor.sol";
import "./libs/TokenLibrary.sol";
import "./Errors.sol";
import "@openzeppelin/contracts/access/Ownable2Step.sol";
import "./uniswapX/interfaces/IReactorCallback.sol";
import "./uniswapX/base/ReactorStructs.sol";
import "./libs/TokenLibrary.sol";
import "@1inch/solidity-utils/contracts/libraries/RevertReasonParser.sol";
import "./libs/SafeERC20Ext.sol";

contract UniswapXBarterReactorCallback is IReactorCallback {
    using SafeERC20 for IERC20;
    using SafeERC20Ext for IERC20;
    using TokenLibrary for IERC20;

    error MsgSenderIsNotReactor();
    error OnlyExecuteSwapIsAllowed();

    IReactor private immutable reactor;

    constructor(IReactor _reactor)
    {
        reactor = _reactor;
    }

    function reactorCallback(ResolvedOrder[] memory resolvedOrders, bytes memory callbackData)
        external
    {
        if (msg.sender != address(reactor)) {
            revert MsgSenderIsNotReactor();
        }

        (address executor, UniswapXSwapDesciption[] memory multicallData) =
            abi.decode(callbackData, (address, UniswapXSwapDesciption[]));

        unchecked {
            for (uint256 i = 0; i < multicallData.length; i++) {
                UniswapXSwapDesciption memory swapDescription = multicallData[i];
                bytes memory data = swapDescription.data;
                bytes32 sig;
                assembly {
                    sig := and(mload(add(data, 0x20)), 0xffffffff00000000000000000000000000000000000000000000000000000000)
                }
                if (sig != bytes32(ISwapExecutor.executeSwap.selector)) {
                    revert OnlyExecuteSwapIsAllowed();
                }

                uint256 totalOutputs = 1; // keeping 1 wei on contract for cheaper swaps

                IERC20 targetToken = resolvedOrders[i].outputs[0].token;
                for (uint256 j = 0; j < resolvedOrders[i].outputs.length; j++) {
                    OutputToken memory output = resolvedOrders[i].outputs[j];
                    totalOutputs += output.amount;
                    if (targetToken != output.token) {
                        revert SingleOutputTokenAllowed(address(targetToken), address(output.token));
                    }
                }

                uint256 outputAmountPatchingOffset = swapDescription.outputAmountPatchingOffset;
                // patching data inlined from LowLevelHelper.patchUint
                assembly {
                    mstore(add(data, outputAmountPatchingOffset), totalOutputs)
                }

                // reactorCallback is not payable so source token cannot be native
                swapDescription.sourceToken.safeTransfer(address(executor), swapDescription.sourceAmount);
                (bool success, bytes memory result) = executor.call(data);
                if (!success) {
                    string memory reason = RevertReasonParser.parse(
                        result,
                        "UNIX: "
                    );
                    revert(reason);
                }
            }

            for (uint256 i = 0; i < resolvedOrders.length; i++) {
                for (uint256 j = 0; j < resolvedOrders[i].outputs.length; j++) {
                    if (resolvedOrders[i].outputs[j].token.allowance(address(this), msg.sender) == 0) {
                        resolvedOrders[i].outputs[j].token.setAllowance(
                            msg.sender,
                            type(uint256).max
                        );
                    }
                }
            }
        }
    }

    function executeEntry(SignedOrder calldata order, bytes calldata callbackData) external {
        reactor.executeWithCallback(order, callbackData);
    }

    function executeBatchEntry(SignedOrder[] calldata orders, bytes calldata callbackData) external {
        reactor.executeBatchWithCallback(orders, callbackData);
    }

    struct UniswapXSwapDesciption {
        uint64 outputAmountPatchingOffset;
        IERC20 sourceToken;
        uint256 sourceAmount;
        bytes data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./StringUtil.sol";

/** @title Library that allows to parse unsuccessful arbitrary calls revert reasons.
 * See https://solidity.readthedocs.io/en/latest/control-structures.html#revert for details.
 * Note that we assume revert reason being abi-encoded as Error(string) so it may fail to parse reason
 * if structured reverts appear in the future.
 *
 * All unsuccessful parsings get encoded as Unknown(data) string
 */
library RevertReasonParser {
    using StringUtil for uint256;
    using StringUtil for bytes;

    error InvalidRevertReason();

    bytes4 private constant _ERROR_SELECTOR = bytes4(keccak256("Error(string)"));
    bytes4 private constant _PANIC_SELECTOR = bytes4(keccak256("Panic(uint256)"));

    /// @dev Parses error `data` and returns actual with `prefix`.
    function parse(bytes memory data, string memory prefix) internal pure returns (string memory) {
        // https://solidity.readthedocs.io/en/latest/control-structures.html#revert
        // We assume that revert reason is abi-encoded as Error(string)
        bytes4 selector;
        if (data.length >= 4) {
            assembly ("memory-safe") { // solhint-disable-line no-inline-assembly
                selector := mload(add(data, 0x20))
            }
        }

        // 68 = 4-byte selector + 32 bytes offset + 32 bytes length
        if (selector == _ERROR_SELECTOR && data.length >= 68) {
            string memory reason;
            assembly ("memory-safe") { // solhint-disable-line no-inline-assembly
                // 68 = 32 bytes data length + 4-byte selector + 32 bytes offset
                reason := add(data, 68)
            }
            /*
                revert reason is padded up to 32 bytes with ABI encoder: Error(string)
                also sometimes there is extra 32 bytes of zeros padded in the end:
                https://github.com/ethereum/solidity/issues/10170
                because of that we can't check for equality and instead check
                that string length + extra 68 bytes is equal or greater than overall data length
            */
            if (data.length >= 68 + bytes(reason).length) {
                return string.concat(prefix, "Error(", reason, ")");
            }
        }
        // 36 = 4-byte selector + 32 bytes integer
        else if (selector == _PANIC_SELECTOR && data.length == 36) {
            uint256 code;
            assembly ("memory-safe") { // solhint-disable-line no-inline-assembly
                // 36 = 32 bytes data length + 4-byte selector
                code := mload(add(data, 36))
            }
            return string.concat(prefix, "Panic(", code.toHex(), ")");
        }
        return string.concat(prefix, "Unknown(", data.toHex(), ")");
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title Library with gas-efficient string operations
library StringUtil {
    function toHex(uint256 value) internal pure returns (string memory) {
        return toHex(abi.encodePacked(value));
    }

    function toHex(address value) internal pure returns (string memory) {
        return toHex(abi.encodePacked(value));
    }

    /// @dev this is the assembly adaptation of highly optimized toHex16 code from Mikhail Vladimirov
    /// https://stackoverflow.com/a/69266989
    function toHex(bytes memory data) internal pure returns (string memory result) {
        assembly ("memory-safe") { // solhint-disable-line no-inline-assembly
            function _toHex16(input) -> output {
                output := or(
                    and(input, 0xFFFFFFFFFFFFFFFF000000000000000000000000000000000000000000000000),
                    shr(64, and(input, 0x0000000000000000FFFFFFFFFFFFFFFF00000000000000000000000000000000))
                )
                output := or(
                    and(output, 0xFFFFFFFF000000000000000000000000FFFFFFFF000000000000000000000000),
                    shr(32, and(output, 0x00000000FFFFFFFF000000000000000000000000FFFFFFFF0000000000000000))
                )
                output := or(
                    and(output, 0xFFFF000000000000FFFF000000000000FFFF000000000000FFFF000000000000),
                    shr(16, and(output, 0x0000FFFF000000000000FFFF000000000000FFFF000000000000FFFF00000000))
                )
                output := or(
                    and(output, 0xFF000000FF000000FF000000FF000000FF000000FF000000FF000000FF000000),
                    shr(8, and(output, 0x00FF000000FF000000FF000000FF000000FF000000FF000000FF000000FF0000))
                )
                output := or(
                    shr(4, and(output, 0xF000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000)),
                    shr(8, and(output, 0x0F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F00))
                )
                output := add(
                    add(0x3030303030303030303030303030303030303030303030303030303030303030, output),
                    mul(
                        and(
                            shr(4, add(output, 0x0606060606060606060606060606060606060606060606060606060606060606)),
                            0x0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F
                        ),
                        7 // Change 7 to 39 for lower case output
                    )
                )
            }

            result := mload(0x40)
            let length := mload(data)
            let resultLength := shl(1, length)
            let toPtr := add(result, 0x22) // 32 bytes for length + 2 bytes for '0x'
            mstore(0x40, add(toPtr, resultLength)) // move free memory pointer
            mstore(add(result, 2), 0x3078) // 0x3078 is right aligned so we write to `result + 2`
            // to store the last 2 bytes in the beginning of the string
            mstore(result, add(resultLength, 2)) // extra 2 bytes for '0x'

            for {
                let fromPtr := add(data, 0x20)
                let endPtr := add(fromPtr, length)
            } lt(fromPtr, endPtr) {
                fromPtr := add(fromPtr, 0x20)
            } {
                let rawData := mload(fromPtr)
                let hexData := _toHex16(rawData)
                mstore(toPtr, hexData)
                toPtr := add(toPtr, 0x20)
                hexData := _toHex16(shl(128, rawData))
                mstore(toPtr, hexData)
                toPtr := add(toPtr, 0x20)
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

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

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

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

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

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

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

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

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

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";

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

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

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

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

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

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

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

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

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

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

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

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

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

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

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

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
pragma abicoder v1;

enum EnumType {
    SourceTokenInteraction,
    TargetTokenInteraction,
    CallType
}

enum UniswapV3LikeProtocol {
    Uniswap,
    Kyber,
    Maverick,
    MaverickV2,
    Pancake,
    Camelot
}

error EthValueAmountMismatch();
error EthValueSourceTokenMismatch();
error MinReturnError(uint256, uint256);
error EmptySwapOnExecutor();
error EmptySwap();
error ZeroInput();
error ZeroRecipient();
error TransactionExpired(uint256, uint256);
error PermitNotAllowedForEthSwap();
error SwapTotalAmountCannotBeZero();
error SwapAmountCannotBeZero();
error DirectEthDepositIsForbidden();
error MStableInvalidSwapType(uint256);
error AddressCannotBeZero();
error TransferFromNotAllowed();
error EnumOutOfRangeValue(EnumType, uint256);
error BadUniswapV3LikePool(UniswapV3LikeProtocol);
error ERC1820InterfactionForbidden();
error SingleOutputTokenAllowed(address, address);
error TransferCallbackCallerIsNotOrderBook();
error UnknownPoolType(uint256);

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
pragma abicoder v1;

import "../Errors.sol";

/**
 * @title ContractOnlyEthRecipient
 * @notice Base contract that rejects any direct ethereum deposits. This is a failsafe against users who can accidentaly send ether
 */
abstract contract ContractOnlyEthRecipient {
    receive() external payable {
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender == tx.origin) {
            revert DirectEthDepositIsForbidden();
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

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

/**
 * @title ISwapExecutor
 * @notice Interface for executing low level swaps, including all relevant structs and enums
 */
interface ISwapExecutor {
    struct TokenTransferInfo {
        IERC20 token;
        uint256 exactAmount;
        address payable recipient;
    }

    struct TargetSwapDescription {
        uint256 tokenRatio;
        address target;
        bytes data;
        // uint8 callType; first 8 bits
        // uint8 sourceInteraction; next 8 bits
        // uint32 amountOffset; next 32 bits
        // address sourceTokenInteractionTarget; last 160 bits
        uint256 params;
    }

    struct SwapDescription {
        IERC20 sourceToken;
        TargetSwapDescription[] swaps;
    }

    function executeSwap(TokenTransferInfo[] calldata targetTokenTransferInfos, SwapDescription[] calldata swapDescriptions) external payable;
}

uint8 constant CALL_TYPE_DIRECT = 0;
uint8 constant CALL_TYPE_CALCULATED = 1;
uint8 constant SOURCE_TOKEN_INTERACTION_NONE = 0;
uint8 constant SOURCE_TOKEN_INTERACTION_TRANSFER = 1;
uint8 constant SOURCE_TOKEN_INTERACTION_APPROVE = 2;

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
pragma abicoder v1;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/Address.sol";

library SafeERC20Ext {
    error SafeERC20FailedOperationBarter(address token);

    using Address for address;

    /// @notice Overwrites current allowance to new value. This might be unsafe for some uses so be careful
    function setAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, value)));
    }

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperationBarter(address(token));
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
pragma abicoder v1;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @title TokenLibrary
 * @notice Library for basic interactions with tokens (such as deposits, withdrawals, transfers)
 */
library TokenLibrary {
    using SafeERC20 for IERC20;

    function isEth(IERC20 token) internal pure returns(bool) {
        return address(token) == address(0) || address(token) == address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
    }

    function universalBalanceOf(IERC20 token, address account) internal view returns (uint256) {
        if (isEth(token)) {
            return account.balance;
        } else {
            return token.balanceOf(account);
        }
    }

    function universalTransfer(IERC20 token, address payable to, uint256 amount) internal {
        if (amount == 0) {
            return;
        }
        if (isEth(token)) {
            to.transfer(amount);
        } else {
            token.safeTransfer(to, amount);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

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

/// @dev generic order information
///  should be included as the first field in any concrete order types
struct OrderInfo {
    // The address of the reactor that this order is targeting
    // Note that this must be included in every order so the swapper
    // signature commits to the specific reactor that they trust to fill their order properly
    IReactor reactor;
    // The address of the user which created the order
    // Note that this must be included so that order hashes are unique by swapper
    address swapper;
    // The nonce of the order, allowing for signature replay protection and cancellation
    uint256 nonce;
    // The timestamp after which this order is no longer valid
    uint256 deadline;
    // Custom validation contract
    IValidationCallback additionalValidationContract;
    // Encoded validation params for additionalValidationContract
    bytes additionalValidationData;
}

/// @dev tokens that need to be sent from the swapper in order to satisfy an order
struct InputToken {
    IERC20 token;
    uint256 amount;
    // Needed for dutch decaying inputs
    uint256 maxAmount;
}

/// @dev tokens that need to be received by the recipient in order to satisfy an order
struct OutputToken {
    IERC20 token;
    uint256 amount;
    address recipient;
}

/// @dev generic concrete order that specifies exact tokens which need to be sent and received
struct ResolvedOrder {
    OrderInfo info;
    InputToken input;
    OutputToken[] outputs;
    bytes sig;
    bytes32 hash;
}

/// @dev external struct including a generic encoded order and swapper signature
///  The order bytes will be parsed and mapped to a ResolvedOrder in the concrete reactor contract
struct SignedOrder {
    bytes order;
    bytes sig;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

import {ResolvedOrder, SignedOrder} from "../base/ReactorStructs.sol";
import {IReactorCallback} from "./IReactorCallback.sol";

/// @notice Interface for order execution reactors
interface IReactor {
    /// @notice Execute a single order
    /// @param order The order definition and valid signature to execute
    function execute(SignedOrder calldata order) external payable;

    /// @notice Execute a single order using the given callback data
    /// @param order The order definition and valid signature to execute
    function executeWithCallback(SignedOrder calldata order, bytes calldata callbackData) external payable;

    /// @notice Execute the given orders at once
    /// @param orders The order definitions and valid signatures to execute
    function executeBatch(SignedOrder[] calldata orders) external payable;

    /// @notice Execute the given orders at once using a callback with the given callback data
    /// @param orders The order definitions and valid signatures to execute
    /// @param callbackData The callbackData to pass to the callback
    function executeBatchWithCallback(SignedOrder[] calldata orders, bytes calldata callbackData) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

import {ResolvedOrder} from "../base/ReactorStructs.sol";

/// @notice Callback for executing orders through a reactor.
interface IReactorCallback {
    /// @notice Called by the reactor during the execution of an order
    /// @param resolvedOrders Has inputs and outputs
    /// @param callbackData The callbackData specified for an order execution
    /// @dev Must have approved each token and amount in outputs to the msg.sender
    function reactorCallback(ResolvedOrder[] memory resolvedOrders, bytes memory callbackData) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

import {OrderInfo, ResolvedOrder} from "../base/ReactorStructs.sol";

/// @notice Callback to validate an order
interface IValidationCallback {
    /// @notice Called by the reactor for custom validation of an order. Will revert if validation fails
    /// @param filler The filler of the order
    /// @param resolvedOrder The resolved order to fill
    function validate(address filler, ResolvedOrder calldata resolvedOrder) external view;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IReactor","name":"_reactor","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"MsgSenderIsNotReactor","type":"error"},{"inputs":[],"name":"OnlyExecuteSwapIsAllowed","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperationBarter","type":"error"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"SingleOutputTokenAllowed","type":"error"},{"inputs":[{"components":[{"internalType":"bytes","name":"order","type":"bytes"},{"internalType":"bytes","name":"sig","type":"bytes"}],"internalType":"struct SignedOrder[]","name":"orders","type":"tuple[]"},{"internalType":"bytes","name":"callbackData","type":"bytes"}],"name":"executeBatchEntry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"order","type":"bytes"},{"internalType":"bytes","name":"sig","type":"bytes"}],"internalType":"struct SignedOrder","name":"order","type":"tuple"},{"internalType":"bytes","name":"callbackData","type":"bytes"}],"name":"executeEntry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"contract IReactor","name":"reactor","type":"address"},{"internalType":"address","name":"swapper","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"contract IValidationCallback","name":"additionalValidationContract","type":"address"},{"internalType":"bytes","name":"additionalValidationData","type":"bytes"}],"internalType":"struct OrderInfo","name":"info","type":"tuple"},{"components":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"maxAmount","type":"uint256"}],"internalType":"struct InputToken","name":"input","type":"tuple"},{"components":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct OutputToken[]","name":"outputs","type":"tuple[]"},{"internalType":"bytes","name":"sig","type":"bytes"},{"internalType":"bytes32","name":"hash","type":"bytes32"}],"internalType":"struct ResolvedOrder[]","name":"resolvedOrders","type":"tuple[]"},{"internalType":"bytes","name":"callbackData","type":"bytes"}],"name":"reactorCallback","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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00000000000000000000000000000011f84b9aa48e5f8aa8b9897600006289be

-----Decoded View---------------
Arg [0] : _reactor (address): 0x00000011F84B9aa48e5f8aA8B9897600006289Be

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000011f84b9aa48e5f8aa8b9897600006289be