// 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 v5.0.0) (proxy/Clones.sol)

pragma solidity ^0.8.20;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 */
library Clones {
    /**
     * @dev A clone instance deployment failed.
     */
    error ERC1167FailedCreateClone();

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create(0, 0x09, 0x37)
        }
        if (instance == address(0)) {
            revert ERC1167FailedCreateClone();
        }
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create2(0, 0x09, 0x37, salt)
        }
        if (instance == address(0)) {
            revert ERC1167FailedCreateClone();
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(add(ptr, 0x38), deployer)
            mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff)
            mstore(add(ptr, 0x14), implementation)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73)
            mstore(add(ptr, 0x58), salt)
            mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37))
            predicted := keccak256(add(ptr, 0x43), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt
    ) internal view returns (address predicted) {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// 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;

library DataTypes {
    struct OptionInfo {
        address underlyingToken;
        uint48 expiry;
        address settlementToken;
        uint48 earliestExercise;
        uint128 notional;
        uint128 strike;
        AdvancedSettings advancedSettings;
    }

    struct AdvancedSettings {
        uint64 borrowCap;
        address oracle;
        bool premiumTokenIsUnderlying;
        bool votingDelegationAllowed;
        address allowedDelegateRegistry;
    }

    struct AuctionInitialization {
        address underlyingToken;
        address settlementToken;
        uint128 notional;
        AuctionParams auctionParams;
        AdvancedSettings advancedSettings;
    }

    struct AuctionParams {
        uint128 relStrike;
        uint48 tenor;
        uint48 earliestExerciseTenor;
        uint32 decayStartTime;
        uint32 decayDuration;
        uint64 relPremiumStart;
        uint64 relPremiumFloor;
        uint128 minSpot;
        uint128 maxSpot;
    }

    struct RFQInitialization {
        OptionInfo optionInfo;
        RFQQuote rfqQuote;
    }

    struct RFQQuote {
        uint128 premium;
        uint256 validUntil;
        bytes signature;
        address eip1271Maker;
    }

    enum BidStatus {
        Success,
        SpotPriceTooLow,
        OutOfRangeSpotPrice,
        OptionAlreadyMinted,
        PremiumTooLow,
        AuctionCancelled
    }

    struct BidPreview {
        BidStatus status;
        address settlementToken;
        address underlyingToken;
        uint128 strike;
        uint48 expiry;
        uint48 earliestExercise;
        uint128 premium;
        address premiumToken;
        uint256 oracleSpotPrice;
        uint64 currAsk;
        uint128 matchFeeProtocol;
        uint128 matchFeeDistPartner;
    }

    enum RFQStatus {
        Expired,
        InvalidQuote,
        AlreadyExecuted,
        QuotesPaused,
        Success,
        InvalidEIP1271Signature
    }

    struct TakeQuotePreview {
        RFQStatus status;
        bytes32 msgHash;
        address quoter;
        uint128 premium;
        address premiumToken;
        uint128 matchFeeProtocol;
        uint128 matchFeeDistPartner;
    }

    struct SwapQuote {
        address takerGiveToken;
        uint256 takerGiveAmount;
        address makerGiveToken;
        uint256 makerGiveAmount;
        uint256 validUntil;
        bytes signature;
        address eip1271Maker;
    }

    struct OptionNaming {
        string name;
        string symbol;
    }

    struct MatchFeePerPair {
        bool isSet;
        uint96 matchFee;
    }
}

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

pragma solidity ^0.8.20;

/**
 * @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
    }

    /**
     * @dev The signature derives the `address(0)`.
     */
    error ECDSAInvalidSignature();

    /**
     * @dev The signature has an invalid length.
     */
    error ECDSAInvalidSignatureLength(uint256 length);

    /**
     * @dev The signature has an S value that is in the upper half order.
     */
    error ECDSAInvalidSignatureS(bytes32 s);

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not
     * return address(0) without also returning an error description. Errors are documented using an enum (error type)
     * and a bytes32 providing additional information about the error.
     *
     * If no error is returned, then the address can be used for verification purposes.
     *
     * The `ecrecover` EVM precompile 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 {MessageHashUtils-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]
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length));
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM precompile 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 {MessageHashUtils-toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature);
        _throwError(error, errorArg);
        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]
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) {
        unchecked {
            bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
            // We do not check for an overflow here since the shift operation results in 0 or 1.
            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.
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs);
        _throwError(error, errorArg);
        return recovered;
    }

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

        // 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, bytes32(0));
        }

        return (signer, RecoverError.NoError, bytes32(0));
    }

    /**
     * @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, bytes32 errorArg) = tryRecover(hash, v, r, s);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided.
     */
    function _throwError(RecoverError error, bytes32 errorArg) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert ECDSAInvalidSignature();
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert ECDSAInvalidSignatureLength(uint256(errorArg));
        } else if (error == RecoverError.InvalidSignatureS) {
            revert ECDSAInvalidSignatureS(errorArg);
        }
    }
}

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

library Errors {
    error AlreadyInitialized();
    error DistPartnerFeeUnchanged();
    error FeeHandlerAlreadySet();
    error InvalidAddress();
    error InvalidArrayLength();
    error InvalidBid();
    error InvalidBorrowAmount();
    error InvalidBorrowCap();
    error InvalidBorrowTime();
    error InvalidDistPartnerFeeShare();
    error InvalidEarliestExercise();
    error InvalidEarliestExerciseTenor();
    error InvalidEIP1271Signature();
    error InvalidExpiry();
    error InvalidExercise();
    error InvalidExerciseAmount();
    error InvalidExerciseFee();
    error InvalidExerciseTime();
    error InvalidGetEscrowsQuery();
    error InvalidMatchFee();
    error InvalidMaxTimeSinceLastUpdate();
    error InvalidMintFee();
    error InvalidMinMaxSpot();
    error InvalidNotional();
    error InvalidOracle();
    error InvalidOracleAnswer();
    error InvalidOracleDecimals();
    error InvalidRelPremiums();
    error InvalidRepayAmount();
    error InvalidRepayTime();
    error InvalidSender();
    error InvalidStrike();
    error InvalidTakeQuote();
    error InvalidTenor();
    error InvalidTokenPair();
    error InvalidWithdraw();
    error NoAllowedDelegateRegistry();
    error NoOptionMinted();
    error NoOracle();
    error NotAnEscrow();
    error NothingToRedeem();
    error NothingToRepay();
    error OnlyAvailableForAuctions();
    error OracleAlreadySet(address oracleAddr);
    error OwnerAlreadySet();
    error SwapQuoteAlreadyUsed();
    error SwapQuoteExpired();
    error SwapQuotePaused();
    error VotingDelegationNotAllowed();
}

// 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/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// 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
pragma solidity 0.8.24;

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

/**
 * @title IEscrow
 * @dev Interface for the Escrow contract.
 * Provides functionality for initializing auctions, bids, options, and managing underlying tokens.
 */
interface IEscrow {
    /// @notice Emitted when on-chain voting rights are delegated.
    /// @param delegate The address delegated for on-chain voting.
    event OnChainVotingDelegation(address delegate);

    /// @notice Emitted when off-chain voting rights are delegated.
    /// @param allowedDelegateRegistry Address of the allowed delegate registry.
    /// @param spaceId ID of the delegation space (e.g., for Snapshot).
    /// @param delegate The address delegated for off-chain voting.
    event OffChainVotingDelegation(
        address allowedDelegateRegistry,
        bytes32 spaceId,
        address delegate
    );

    /// @notice Emitted when tokens are withdrawn from the escrow.
    /// @param sender The address initiating the withdrawal.
    /// @param to The address receiving the withdrawn funds.
    /// @param token The address of the token being withdrawn.
    /// @param amount The amount of tokens withdrawn.
    event Withdraw(
        address indexed sender,
        address indexed to,
        address indexed token,
        uint256 amount
    );

    /// @notice Emitted when escrow ownership is transferred to a new owner.
    /// @param sender The address initiating the ownership transfer.
    /// @param oldOwner The address of the previous owner.
    /// @param newOwner The address of the new owner.
    event TransferOwnership(
        address indexed sender,
        address oldOwner,
        address newOwner
    );

    /// @notice Emitted when a redeem action is performed.
    /// @param sender The address initiating the redemption.
    /// @param to The address receiving the redeemed underlying tokens.
    /// @param underlyingToken The address of the underlying token being redeemed.
    /// @param amount The amount of underlying tokens redeemed.
    event Redeem(
        address indexed sender,
        address to,
        address underlyingToken,
        uint256 amount
    );

    /// @notice Returns the premium paid for the option.
    /// @return premiumPaid Amount of premium paid for the option.
    function premiumPaid() external view returns (uint128);

    /// @notice Returns the total amount borrowed in the underlying token.
    /// @return totalBorrowed Total borrowed amount.
    function totalBorrowed() external view returns (uint128);

    /// @notice Returns the address of the router linked to this Escrow.
    /// @return router The address of the router.
    function router() external view returns (address);

    /// @notice Returns the exercise fee set in the Escrow.
    /// @return exerciseFee The exercise fee as a percentage.
    function exerciseFee() external view returns (uint96);

    /// @notice Returns the address of the owner of the Escrow.
    /// @return owner The address of the current owner.
    function owner() external view returns (address);

    /// @notice Indicates if the escrow is set up for an auction.
    /// @return isAuction Boolean indicating auction status.
    function isAuction() external view returns (bool);

    /// @notice Indicates if the option has been minted.
    /// @return optionMinted Boolean indicating if the option is minted.
    function optionMinted() external view returns (bool);

    /// @notice Returns the distribution partner of an auction.
    /// @return Returns the distribution partner of an auction.
    function distPartner() external view returns (address);

    /// @notice Initializes the Escrow contract for an auction.
    /// @param _router The router address.
    /// @param _owner The address of the auction owner.
    /// @param _exerciseFee The exercise fee to be applied in case of exercise.
    /// @param _auctionInitialization Struct containing auction parameters.
    /// @param oTokenIndex Index for identifying the option token.
    /// @param distPartner The distribution partner address.
    function initializeAuction(
        address _router,
        address _owner,
        uint96 _exerciseFee,
        DataTypes.AuctionInitialization calldata _auctionInitialization,
        uint256 oTokenIndex,
        address distPartner
    ) external;

    /// @notice Initializes the Escrow for a matched RFQ.
    /// @param _router The router address.
    /// @param _owner The address of the escrow owner.
    /// @param optionReceiver Address receiving the option tokens.
    /// @param _exerciseFee The exercise fee to be applied in case of exercise.
    /// @param _rfqInitialization Struct containing RFQ parameters.
    /// @param oTokenIndex Index for identifying the option token.
    function initializeRFQMatch(
        address _router,
        address _owner,
        address optionReceiver,
        uint96 _exerciseFee,
        DataTypes.RFQInitialization calldata _rfqInitialization,
        uint256 oTokenIndex
    ) external;

    /// @notice Initializes the Escrow when minting a standalone option.
    /// @param _router The router address.
    /// @param _owner The address of the option owner.
    /// @param optionReceiver Address receiving the minted option tokens.
    /// @param _exerciseFee The exercise fee to be applied in case of exercise.
    /// @param _optionInfo Struct containing option information.
    /// @param _optionNaming Struct containing the name and symbol of the option token.
    function initializeMintOption(
        address _router,
        address _owner,
        address optionReceiver,
        uint96 _exerciseFee,
        DataTypes.OptionInfo calldata _optionInfo,
        DataTypes.OptionNaming calldata _optionNaming
    ) external;

    /// @notice Handles bidding on an auction.
    /// @param relBid Relative bid as percentage of notional.
    /// @param optionReceiver Address receiving the option tokens.
    /// @param _refSpot Reference spot price.
    /// @param _oracleData Additional optional oracle data.
    /// @return preview Returns a BidPreview struct with the bid's outcome.
    /// @return distPartner Returns the address of the distribution partner.
    function handleAuctionBid(
        uint256 relBid,
        address optionReceiver,
        uint256 _refSpot,
        bytes[] memory _oracleData
    )
        external
        returns (DataTypes.BidPreview memory preview, address distPartner);

    /// @notice Executes option exercise.
    /// @param exerciser The address exercising the option.
    /// @param underlyingReceiver Address receiving the underlying tokens.
    /// @param underlyingExerciseAmount Amount of underlying tokens to exercise.
    /// @param payInSettlementToken True if settlement is in the settlement token.
    /// @param oracleData Additional optional oracle data.
    /// @return settlementToken Address of the settlement token.
    /// @return settlementAmount Amount of settlement tokens paid.
    /// @return exerciseFeeAmount The fee applied for exercising.
    function handleExercise(
        address exerciser,
        address underlyingReceiver,
        uint256 underlyingExerciseAmount,
        bool payInSettlementToken,
        bytes[] memory oracleData
    )
        external
        returns (
            address settlementToken,
            uint256 settlementAmount,
            uint256 exerciseFeeAmount
        );

    /// @notice Handles borrowing of underlying tokens.
    /// @param borrower The address borrowing the tokens.
    /// @param underlyingReceiver Address receiving the borrowed tokens.
    /// @param underlyingBorrowAmount Amount of underlying tokens to borrow.
    /// @return settlementToken Address of the settlement token.
    /// @return collateralAmount Amount of collateral required.
    /// @return collateralFeeAmount The collateral fee applied for borrowing.
    function handleBorrow(
        address borrower,
        address underlyingReceiver,
        uint128 underlyingBorrowAmount
    )
        external
        returns (
            address settlementToken,
            uint256 collateralAmount,
            uint256 collateralFeeAmount
        );

    /// @notice Handles repayment of borrowed underlying tokens.
    /// @param borrower The address repaying the loan.
    /// @param collateralReceiver Address receiving the unlocked collateral.
    /// @param underlyingRepayAmount Amount of underlying tokens to repay.
    /// @return underlyingToken Address of the underlying token.
    /// @return unlockedCollateralAmount Amount of collateral unlocked upon repayment.
    function handleRepay(
        address borrower,
        address collateralReceiver,
        uint128 underlyingRepayAmount
    )
        external
        returns (address underlyingToken, uint256 unlockedCollateralAmount);

    /// @notice Delegates voting rights on-chain to a specified delegate.
    /// @param delegate The address to delegate voting rights to.
    function handleOnChainVoting(address delegate) external;

    /// @notice Delegates voting rights off-chain to a specified delegate.
    /// @param spaceId ID of the delegation space (e.g., for Snapshot).
    /// @param delegate The address to delegate voting rights to.
    function handleOffChainVoting(bytes32 spaceId, address delegate) external;

    /// @notice Withdraws a specified amount of tokens to a given address.
    /// @param to Address receiving the withdrawn tokens.
    /// @param token Address of the token to withdraw.
    /// @param amount Amount of tokens to withdraw.
    function handleWithdraw(address to, address token, uint256 amount) external;

    /// @notice Allows the escrow owner to redeem option tokens for underlying.
    /// @param to The address that will receive the underlying tokens upon redemption.
    function redeem(address to) external;

    /// @notice Transfers ownership of the Escrow to a new owner.
    /// @param newOwner Address of the new owner.
    function transferOwnership(address newOwner) external;

    /// @notice Previews the result of a bid on the auction.
    /// @param relBid Relative bid in percentage of notional.
    /// @param _refSpot Reference spot price.
    /// @param _oracleData Additional optional oracle data.
    /// @return preview Returns a BidPreview struct with the bid's outcome.
    /// @return __distPartner Returns the address of the distribution partner.
    function previewBid(
        uint256 relBid,
        uint256 _refSpot,
        bytes[] memory _oracleData
    )
        external
        view
        returns (DataTypes.BidPreview memory preview, address __distPartner);

    /// @notice Returns the current ask of the auction in percentage of notional.
    /// @return Current ask percentage.
    function currAsk() external view returns (uint64);
}

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

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

/// @title IFeeHandler
/// @dev Interface for the FeeHandler contract.
/// Provides functionality for managing and distributing fees, and setting fee configurations.

interface IFeeHandler {
    /// @notice Emitted when fees are provisioned.
    /// @param token The address of the token in which fees are provisioned.
    /// @param amount The amount of the token provisioned as fees.
    event ProvisionFees(address indexed token, uint256 amount);

    /// @notice Emitted when tokens are withdrawn from the FeeHandler.
    /// @param to The address receiving the withdrawn tokens.
    /// @param token The address of the token being withdrawn.
    /// @param amount The amount of tokens withdrawn.
    event Withdraw(address indexed to, address indexed token, uint256 amount);

    /// @notice Emitted when match fee is set.
    /// @param matchFee The match fee set as a percentage.
    event SetMatchFee(uint256 matchFee);

    /// @notice Emitted when token pair-specific match fees are set or removed.
    /// @param underlyingTokens The underlying tokens per pair.
    /// @param settlementTokens The settlement tokens per pair.
    /// @param matchFeesPerPair The match fee structs per pair.
    event SetMatchFeesPerPair(
        address[] underlyingTokens,
        address[] settlementTokens,
        DataTypes.MatchFeePerPair[] matchFeesPerPair
    );

    /// @notice Emitted when mint fee is set.
    /// @param mintFee The mint fee set as a percentage.
    event SetMintFee(uint256 mintFee);

    /// @notice Emitted when the exercise fee is set.
    /// @param exerciseFee The exercise fee set as a percentage.
    event SetExerciseFee(uint96 exerciseFee);

    /// @notice Emitted when distribution partners are set.
    /// @param accounts The addresses of the distribution partners.
    /// @param feeShares The fee shares for given distribution partners.
    event SetDistPartnerFeeShares(address[] accounts, uint256[] feeShares);

    /// @notice Provisions fees in a specified token.
    /// @param token The address of the token in which fees are provisioned.
    /// @param amount The amount of the token provisioned as fees.
    function provisionFees(address token, uint256 amount) external;

    /// @notice Withdraws a specified amount of tokens to a given address.
    /// @param to The address receiving the withdrawn tokens.
    /// @param token The address of the token to withdraw.
    /// @param amount The amount of tokens to withdraw.
    function withdraw(address to, address token, uint256 amount) external;

    /// @notice Returns the match fee and distribution partner fee share for a given option match.
    /// @param distPartner The address of the distribution partner.
    /// @param optionPremium The given option premium.
    /// @param optionInfo The given option info.
    /// @return _matchFee The applicable match fee for the given option.
    /// @return _matchFeeDistPartnerShare The distribution partner's share of the match fee.
    function getMatchFeeInfo(
        address distPartner,
        uint128 optionPremium,
        DataTypes.OptionInfo calldata optionInfo
    )
        external
        view
        returns (uint256 _matchFee, uint256 _matchFeeDistPartnerShare);

    /// @notice Returns the mint fee and fee share for given distribution partner.
    /// @param distPartner The address of the distribution partner.
    /// @return _mintFee The mint fee as a percentage.
    /// @return _mintFeeDistPartnerShare The share of the mint fee for the distribution partner.
    function getMintFeeInfo(
        address distPartner
    )
        external
        view
        returns (uint256 _mintFee, uint256 _mintFeeDistPartnerShare);

    /// @notice Sets distribution partners and their status.
    /// @param accounts The addresses of the distribution partners.
    /// @param feeShares The fee shares for given distribution partners.
    function setDistPartnerFeeShares(
        address[] calldata accounts,
        uint256[] calldata feeShares
    ) external;

    /// @notice Sets the match fee and distribution partner share.
    /// @param _matchFee The match fee as a percentage.
    function setMatchFee(uint96 _matchFee) external;

    /// @notice Sets or removes a token pair-specific match fee.
    /// @param underlyingTokens The underlying tokens per pair.
    /// @param settlementTokens The settlement tokens per pair.
    /// @param _matchFeePerPair The match fee structs per pair.
    function setMatchFeesPerPair(
        address[] calldata underlyingTokens,
        address[] calldata settlementTokens,
        DataTypes.MatchFeePerPair[] calldata _matchFeePerPair
    ) external;

    /// @notice Sets the exercise fee.
    /// @param _exerciseFee The exercise fee as a percentage.
    function setExerciseFee(uint96 _exerciseFee) external;

    /// @notice Returns the match fee set in the FeeHandler.
    /// @return The match fee as a percentage.
    function matchFee() external view returns (uint96);

    /// @notice Returns the distribution fee share for a given account.
    /// @param account The account to query the distribution fee share for.
    /// @return The fee share for the given distribution partner.
    function distPartnerFeeShare(
        address account
    ) external view returns (uint256);

    /// @notice Returns the exercise fee set in the FeeHandler.
    /// @return The exercise fee as a percentage.
    function exerciseFee() external view returns (uint96);
}

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

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

/// @title IRouter
/// @notice Interface for the Router contract handling auction creation, bidding, exercising, and other related functionalities
interface IRouter {
    /// @notice Emitted when a new auction is created
    /// @param escrowOwner The address of the escrow owner
    /// @param escrow The address of the created escrow contract
    /// @param auctionInitialization The initialization data for the auction
    /// @param exerciseFee The applicable exercise fee
    /// @param distPartner The distribution partner's address
    event CreateAuction(
        address indexed escrowOwner,
        address indexed escrow,
        DataTypes.AuctionInitialization auctionInitialization,
        uint96 exerciseFee,
        address distPartner
    );

    /// @notice Emitted when a withdrawal from escrow occurs and a new auction is created
    /// @param escrowOwner The address of the escrow owner
    /// @param oldEscrow The address of the old escrow
    /// @param newEscrow The address of the new escrow
    /// @param auctionInitialization The initialization data for the auction
    event WithdrawFromEscrowAndCreateAuction(
        address indexed escrowOwner,
        address indexed oldEscrow,
        address indexed newEscrow,
        DataTypes.AuctionInitialization auctionInitialization
    );

    /// @notice Emitted when a withdrawal is made from an escrow
    /// @param sender The address initiating the withdrawal
    /// @param escrow The escrow address from which withdrawal occurs
    /// @param to The address receiving the withdrawn tokens
    /// @param token The token address being withdrawn
    /// @param amount The amount of tokens withdrawn
    event Withdraw(
        address indexed sender,
        address indexed escrow,
        address to,
        address indexed token,
        uint256 amount
    );

    /// @notice Emitted when a bid is placed on an auction
    /// @param sender The address initiating the bid
    /// @param escrow The address of the escrow on which the bid is placed
    /// @param optionReceiver The address receiving the option
    /// @param bidPreview The bid preview
    /// @param distPartner The distribution partner's address
    event BidOnAuction(
        address indexed sender,
        address indexed escrow,
        address optionReceiver,
        DataTypes.BidPreview bidPreview,
        address indexed distPartner
    );

    /// @notice Emitted when an exercise occurs on an option
    /// @param sender The address initiating the exercise
    /// @param escrow The address of the escrow smart contract = option token
    /// @param underlyingReceiver The address receiving the underlying asset
    /// @param underlyingAmount The amount of underlying tokens being exercised
    /// @param exerciseFeeAmount The fee amount for exercising
    event Exercise(
        address indexed sender,
        address indexed escrow,
        address underlyingReceiver,
        uint256 underlyingAmount,
        uint256 exerciseFeeAmount
    );

    /// @notice Emitted when a loan is taken from an escrow
    /// @param sender The address initiating the borrow
    /// @param escrow The address of the escrow providing the loan
    /// @param underlyingReceiver The address receiving the loaned underlying asset
    /// @param underlyingAmount The amount of the loan
    /// @param collateralAmount The amount of collateral provided
    /// @param collateralFeeAmount The fee amount that is deducted from the collateral
    event Borrow(
        address indexed sender,
        address indexed escrow,
        address underlyingReceiver,
        uint128 underlyingAmount,
        uint256 collateralAmount,
        uint256 collateralFeeAmount
    );

    /// @notice Emitted when a repayment is made to an escrow
    /// @param sender The address initiating the repay
    /// @param escrow The address of the escrow receiving the repayment
    /// @param collateralReceiver The address receiving the collateral
    /// @param repayUnderlyingAmount The amount of the underlying asset being repaid
    /// @param unlockedCollateralAmount The amount of collateral being unlocked
    event Repay(
        address indexed sender,
        address indexed escrow,
        address collateralReceiver,
        uint128 repayUnderlyingAmount,
        uint256 unlockedCollateralAmount
    );

    /// @notice Emitted when a quote is taken
    /// @param sender The address initiating the take quote
    /// @param escrowOwner The owner of the escrow
    /// @param escrow The escrow address
    /// @param rfqInitialization The initialization data for the RFQ
    /// @param takeQuotePreview The take quote preview
    /// @param exerciseFee The applicable exercise fee
    /// @param distPartner The distribution partner's address
    event TakeQuote(
        address indexed sender,
        address escrowOwner,
        address indexed escrow,
        DataTypes.RFQInitialization rfqInitialization,
        DataTypes.TakeQuotePreview takeQuotePreview,
        uint96 exerciseFee,
        address indexed distPartner
    );

    /// @notice Emitted when a swap quote is taken
    /// @param sender The address initiating the take swap quote
    /// @param to The address receiving the swapped tokens
    /// @param maker The maker's address providing the swap
    /// @param swapQuote The details of the swap quote
    event TakeSwapQuote(
        address indexed sender,
        address indexed to,
        address indexed maker,
        DataTypes.SwapQuote swapQuote
    );

    /// @notice Emitted when an option is minted
    /// @param sender The address initiating the mint option
    /// @param optionReceiver The address receiving the minted option
    /// @param escrowOwner The owner of the escrow minting the option
    /// @param optionInfo The details of the option being minted
    /// @param mintFeeProtocol The mint fee amount for the protocol
    /// @param mintFeeDistPartner The mint fee amount for the distribution partner
    /// @param distPartner The distribution partner
    event MintOption(
        address indexed sender,
        address indexed optionReceiver,
        address escrowOwner,
        DataTypes.OptionInfo optionInfo,
        uint256 mintFeeProtocol,
        uint256 mintFeeDistPartner,
        address indexed distPartner
    );

    /// @notice Emitted when a new fee handler is set
    /// @param oldFeeHandler The previous fee handler address
    /// @param newFeeHandler The new fee handler address
    event NewFeeHandler(address oldFeeHandler, address newFeeHandler);

    /// @notice Emitted when quote pause status changes
    /// @param quoter The address whose pause status changed
    /// @param isPaused The new pause status
    event PauseQuotes(address indexed quoter, bool isPaused);

    /// @notice Emitted when tokens are transferred between addresses.
    /// @param token The address of the token contract.
    /// @param from The address transferring the tokens.
    /// @param to The address receiving the tokens.
    /// @param value The amount of tokens transferred.
    event Transfer(
        address indexed token,
        address indexed from,
        address indexed to,
        uint256 value
    );

    /// @notice Emitted when ownership of escrow is transferred
    /// @param escrow The address of the escrow contract.
    /// @param oldOwner The address of the old owner.
    /// @param newOwner The address of the new owner.
    event TransferOwnership(
        address indexed escrow,
        address indexed oldOwner,
        address indexed newOwner
    );

    /// @notice Returns the address of the escrow implementation contract.
    /// @return escrowImpl The address of the escrow implementation contract.
    function escrowImpl() external view returns (address);

    /// @notice Returns the address of the fee handler contract.
    /// @return feeHandler The address of the fee handler.
    function feeHandler() external view returns (address);

    /// @notice Returns the total number of escrows created.
    /// @return numEscrows The total number of escrows.
    function numEscrows() external view returns (uint256);

    /// @notice Checks if a specific address is registered as an escrow.
    /// @param escrow The address to check.
    /// @return True if the address is an escrow, false otherwise.
    function isEscrow(address escrow) external view returns (bool);

    /// @notice Checks if a specific quote has been used.
    /// @param quoteHash The hash of the quote.
    /// @return True if the quote has been used, false otherwise.
    function isQuoteUsed(bytes32 quoteHash) external view returns (bool);

    /// @notice Checks if a specific swap quote has been used.
    /// @param swapQuoteHash The hash of the swap quote.
    /// @return True if the swap quote has been used, false otherwise.
    function isSwapQuoteUsed(
        bytes32 swapQuoteHash
    ) external view returns (bool);

    /// @notice Checks if quotes are paused for a specific address.
    /// @param quoter The address to check.
    /// @return True if quotes are paused for the address, false otherwise.
    function quotesPaused(address quoter) external view returns (bool);

    /// @notice Creates a new Dutch auction
    /// @param escrowOwner The address of the escrow owner
    /// @param auctionInitialization The initialization data for the auction
    /// @param distPartner The address of the distribution partner
    function createAuction(
        address escrowOwner,
        DataTypes.AuctionInitialization calldata auctionInitialization,
        address distPartner
    ) external;

    /// @notice Withdraws from an existing escrow and creates a new auction
    /// @param oldEscrow The address of the old escrow
    /// @param escrowOwner The address of the escrow owner
    /// @param auctionInitialization The initialization data for the auction
    /// @param distPartner The address of the distribution partner
    function withdrawFromEscrowAndCreateAuction(
        address oldEscrow,
        address escrowOwner,
        DataTypes.AuctionInitialization calldata auctionInitialization,
        address distPartner
    ) external;

    /// @notice Withdraws tokens from a specified escrow
    /// @param escrow The escrow address from which to withdraw
    /// @param to The address to receive the withdrawn tokens
    /// @param token The token to be withdrawn
    /// @param amount The amount of tokens to withdraw
    function withdraw(
        address escrow,
        address to,
        address token,
        uint256 amount
    ) external;

    /// @notice Places a bid on an auction
    /// @param escrow The escrow address for the auction
    /// @param optionReceiver The address to receive the option
    /// @param relBid The relative bid in percentage of notional
    /// @param refSpot The reference spot price
    /// @param oracleData Additional optional oracle data for validation
    /// @return preview The bid preview data
    /// @return distPartner The distribution partner
    function bidOnAuction(
        address escrow,
        address optionReceiver,
        uint256 relBid,
        uint256 refSpot,
        bytes[] memory oracleData
    )
        external
        returns (DataTypes.BidPreview memory preview, address distPartner);

    /// @notice Exercises an option in an escrow
    /// @param escrow The escrow address holding the option
    /// @param underlyingReceiver The address receiving the underlying asset
    /// @param underlyingAmount The amount of the underlying asset exercised
    /// @param payInSettlementToken Whether payment is in the settlement token
    /// @param oracleData Additional optional oracle data for validation
    function exercise(
        address escrow,
        address underlyingReceiver,
        uint256 underlyingAmount,
        bool payInSettlementToken,
        bytes[] memory oracleData
    ) external;

    /// @notice Borrows underlying tokens from an escrow
    /// @param escrow The escrow address providing the loan
    /// @param underlyingReceiver The address to receive the loaned tokens
    /// @param borrowUnderlyingAmount The amount of the loan
    function borrow(
        address escrow,
        address underlyingReceiver,
        uint128 borrowUnderlyingAmount
    ) external;

    /// @notice Repays a loan to an escrow
    /// @param escrow The escrow address receiving the repayment
    /// @param collateralReceiver The address to receive collateral
    /// @param repayUnderlyingAmount The amount of the underlying asset repaid
    function repay(
        address escrow,
        address collateralReceiver,
        uint128 repayUnderlyingAmount
    ) external;

    /// @notice Takes an RFQ quote
    /// @param escrowOwner The address of the escrow owner
    /// @param rfqInitialization The initialization data for the RFQ
    /// @param distPartner The distribution partner's address
    function takeQuote(
        address escrowOwner,
        DataTypes.RFQInitialization calldata rfqInitialization,
        address distPartner
    ) external;

    /// @notice Takes a swap quote
    /// @param to The address to receive the swapped tokens
    /// @param swapQuote The swap quote details
    function takeSwapQuote(
        address to,
        DataTypes.SwapQuote calldata swapQuote
    ) external;

    /// @notice Toggles the pause status of quotes for the sender
    function togglePauseQuotes() external;

    /// @notice Mints a new option
    /// @param optionReceiver The address to receive the minted option
    /// @param escrowOwner The owner of the escrow minting the option
    /// @param optionInfo The details of the option being minted
    /// @param optionNaming The name and symbol of the option being minted
    /// @param distPartner The distribution partner's address
    function mintOption(
        address optionReceiver,
        address escrowOwner,
        DataTypes.OptionInfo calldata optionInfo,
        DataTypes.OptionNaming calldata optionNaming,
        address distPartner
    ) external;

    /// @notice Sets a new fee handler address
    /// @param newFeeHandler The new fee handler address
    function setFeeHandler(address newFeeHandler) external;

    /// @notice Retrieves the current exercise fee
    /// @return exerciseFee The current exercise fee as a `uint96`
    function getExerciseFee() external view returns (uint96 exerciseFee);

    /// @notice Returns the match fee and distribution partner fee share for a given option match.
    /// @param distPartner The address of the distribution partner.
    /// @param optionPremium The given option premium.
    /// @param optionInfo The given option info.
    /// @return matchFeeProtocol The protocol's match fee
    /// @return matchFeeDistPartner The distribution partner's match fee
    function getMatchFees(
        address distPartner,
        uint128 optionPremium,
        DataTypes.OptionInfo calldata optionInfo
    )
        external
        view
        returns (uint128 matchFeeProtocol, uint128 matchFeeDistPartner);

    /// @notice Calculates mint fees for a given distribution partner and notional
    /// @param distPartner The distribution partner's address
    /// @param notional The notional of the option in underlying token units
    /// @return mintFeeProtocol The protocol's mint fee in option tokens
    /// @return mintFeeDistPartner The distribution partner's mint fee in option tokens
    function getMintFees(
        address distPartner,
        uint128 notional
    )
        external
        view
        returns (uint256 mintFeeProtocol, uint256 mintFeeDistPartner);

    /// @notice Previews the result of taking a quote
    /// @param rfqInitialization The initialization data for the RFQ
    /// @param distPartner The distribution partner's address
    /// @return A preview of the quote as a `TakeQuotePreview` struct
    function previewTakeQuote(
        DataTypes.RFQInitialization calldata rfqInitialization,
        address distPartner
    ) external view returns (DataTypes.TakeQuotePreview memory);

    /// @notice Retrieves a range of escrows
    /// @param from The starting index of escrows to retrieve
    /// @param numElements The number of escrows to retrieve
    /// @return _escrows An array of escrow addresses
    function getEscrows(
        uint256 from,
        uint256 numElements
    ) external view returns (address[] memory _escrows);

    /// @notice Emits a `Transfer` event for a token.
    /// @dev Callable only by registered escrows. Reverts if not an escrow.
    /// @param from Address sending the tokens.
    /// @param to Address receiving the tokens.
    /// @param value Amount of tokens transferred.
    function emitTransferEvent(
        address from,
        address to,
        uint256 value
    ) external;

    /// @notice Emits a `TransferOwnership` event for an escrow contract.
    /// @dev Callable only by registered escrows. Reverts if not an escrow.
    /// @param oldOwner Address of the old owner.
    /// @param newOwner Address of the new owner.
    function emitTransferOwnershipEvent(
        address oldOwner,
        address newOwner
    ) external;
}

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

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    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 subtraction of two unsigned integers, with an overflow flag.
     */
    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.
     */
    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.
     */
    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.
     */
    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 largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

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

pragma solidity ^0.8.20;

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

/**
 * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing.
 *
 * The library provides methods for generating a hash of a message that conforms to the
 * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712]
 * specifications.
 */
library MessageHashUtils {
    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing a bytes32 `messageHash` with
     * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with
     * keccak256, although any bytes32 value can be safely used because the final digest will
     * be re-hashed.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash
            mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix
            digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20)
        }
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing an arbitrary `message` with
     * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) {
        return
            keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x00` (data with intended validator).
     *
     * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended
     * `validator` address. Then hashing the result.
     *
     * See {ECDSA-recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(hex"19_00", validator, data));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`).
     *
     * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with
     * `\x19\x01` and hashing the result. It corresponds to the hash signed by the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712.
     *
     * See {ECDSA-recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, hex"19_01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            digest := keccak256(ptr, 0x42)
        }
    }
}

// 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
pragma solidity 0.8.24;

import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {SafeCast} from "@openzeppelin/contracts/utils/math/SafeCast.sol";
import {DataTypes} from "./DataTypes.sol";
import {Errors} from "./errors/Errors.sol";
import {IEscrow} from "./interfaces/IEscrow.sol";
import {IFeeHandler} from "./interfaces/IFeeHandler.sol";
import {IRouter} from "./interfaces/IRouter.sol";

contract Router is Ownable, IRouter {
    using SafeERC20 for IERC20Metadata;

    uint64 internal constant BASE = 1 ether;
    uint96 internal constant MAX_MATCH_FEE = 0.2 ether;
    uint96 internal constant MAX_EXERCISE_FEE = 0.005 ether;

    // @dev: EIP-1271 with bytes4(keccak256("isValidSignature(bytes32,bytes)")
    bytes4 internal constant EIP1271_SIG_AND_MAGIC_VALUE = 0x1626ba7e;

    address public immutable escrowImpl;
    address public feeHandler;
    uint256 public numEscrows;

    mapping(address => bool) public isEscrow;
    mapping(bytes32 => bool) public isQuoteUsed;
    mapping(bytes32 => bool) public isSwapQuoteUsed;
    mapping(address => bool) public quotesPaused;

    address[] internal _escrows;

    constructor(address initOwner, address _escrowImpl) Ownable(initOwner) {
        if (_escrowImpl == address(0)) {
            revert Errors.InvalidAddress();
        }
        escrowImpl = _escrowImpl;
    }

    function createAuction(
        address escrowOwner,
        DataTypes.AuctionInitialization calldata auctionInitialization,
        address distPartner
    ) external {
        (address escrow, uint256 oTokenIndex) = _createEscrow();
        uint96 exerciseFee = getExerciseFee();
        IEscrow(escrow).initializeAuction(
            address(this),
            escrowOwner,
            exerciseFee,
            auctionInitialization,
            oTokenIndex,
            distPartner
        );
        IERC20Metadata(auctionInitialization.underlyingToken).safeTransferFrom(
            msg.sender,
            escrow,
            auctionInitialization.notional
        );
        emit CreateAuction(
            escrowOwner,
            escrow,
            auctionInitialization,
            exerciseFee,
            distPartner
        );
    }

    function withdrawFromEscrowAndCreateAuction(
        address oldEscrow,
        address escrowOwner,
        DataTypes.AuctionInitialization calldata auctionInitialization,
        address distPartner
    ) external {
        if (!isEscrow[oldEscrow]) {
            revert Errors.NotAnEscrow();
        }
        if (msg.sender != IEscrow(oldEscrow).owner()) {
            revert Errors.InvalidSender();
        }
        (address newEscrow, uint256 oTokenIndex) = _createEscrow();
        IEscrow(newEscrow).initializeAuction(
            address(this),
            escrowOwner,
            getExerciseFee(),
            auctionInitialization,
            oTokenIndex,
            distPartner
        );

        uint256 oldEscrowBal = IERC20Metadata(
            auctionInitialization.underlyingToken
        ).balanceOf(oldEscrow);

        // @dev: if new notional gte old escrow balance
        // then we can rollover funds
        address withdrawTo = auctionInitialization.notional >= oldEscrowBal
            ? newEscrow
            : msg.sender;
        uint256 netTransferAmountNeeded = auctionInitialization.notional >=
            oldEscrowBal
            ? auctionInitialization.notional - oldEscrowBal
            : auctionInitialization.notional;

        IEscrow(oldEscrow).handleWithdraw(
            withdrawTo,
            auctionInitialization.underlyingToken,
            oldEscrowBal
        );

        // @dev: iff new notional equal old escrow balance
        // then no transfer needed
        if (netTransferAmountNeeded > 0) {
            IERC20Metadata(auctionInitialization.underlyingToken)
                .safeTransferFrom(
                    msg.sender,
                    newEscrow,
                    netTransferAmountNeeded
                );
        }

        emit WithdrawFromEscrowAndCreateAuction(
            escrowOwner,
            oldEscrow,
            newEscrow,
            auctionInitialization
        );
    }

    function withdraw(
        address escrow,
        address to,
        address token,
        uint256 amount
    ) external {
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        if (msg.sender != IEscrow(escrow).owner()) {
            revert Errors.InvalidSender();
        }
        IEscrow(escrow).handleWithdraw(to, token, amount);
        emit Withdraw(msg.sender, escrow, to, token, amount);
    }

    function bidOnAuction(
        address escrow,
        address optionReceiver,
        uint256 relBid,
        uint256 _refSpot,
        bytes[] memory _oracleData
    )
        external
        returns (DataTypes.BidPreview memory preview, address distPartner)
    {
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        (preview, distPartner) = IEscrow(escrow).handleAuctionBid(
            relBid,
            optionReceiver,
            _refSpot,
            _oracleData
        );
        IERC20Metadata(preview.premiumToken).safeTransferFrom(
            msg.sender,
            IEscrow(escrow).owner(),
            preview.premium -
                preview.matchFeeDistPartner -
                preview.matchFeeProtocol
        );
        if (preview.matchFeeDistPartner > 0) {
            IERC20Metadata(preview.premiumToken).safeTransferFrom(
                msg.sender,
                distPartner,
                preview.matchFeeDistPartner
            );
        }
        if (preview.matchFeeProtocol > 0) {
            address _feeHandler = feeHandler;
            IERC20Metadata(preview.premiumToken).safeTransferFrom(
                msg.sender,
                _feeHandler,
                preview.matchFeeProtocol
            );
            IFeeHandler(_feeHandler).provisionFees(
                preview.premiumToken,
                preview.matchFeeProtocol
            );
        }

        emit BidOnAuction(
            msg.sender,
            escrow,
            optionReceiver,
            preview,
            distPartner
        );
    }

    function exercise(
        address escrow,
        address underlyingReceiver,
        uint256 underlyingAmount,
        bool payInSettlementToken,
        bytes[] memory oracleData
    ) external {
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        (
            address settlementToken,
            uint256 settlementAmount,
            uint256 exerciseFeeAmount
        ) = IEscrow(escrow).handleExercise(
                msg.sender,
                underlyingReceiver,
                underlyingAmount,
                payInSettlementToken,
                oracleData
            );
        if (payInSettlementToken) {
            IERC20Metadata(settlementToken).safeTransferFrom(
                msg.sender,
                IEscrow(escrow).owner(),
                settlementAmount
            );
        }
        address _feeHandler = feeHandler;
        if (_feeHandler != address(0) && exerciseFeeAmount > 0) {
            IERC20Metadata(settlementToken).safeTransferFrom(
                msg.sender,
                feeHandler,
                exerciseFeeAmount
            );
            IFeeHandler(_feeHandler).provisionFees(
                settlementToken,
                exerciseFeeAmount
            );
        }
        emit Exercise(
            msg.sender,
            escrow,
            underlyingReceiver,
            underlyingAmount,
            exerciseFeeAmount
        );
    }

    function borrow(
        address escrow,
        address underlyingReceiver,
        uint128 borrowUnderlyingAmount
    ) external {
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        (
            address settlementToken,
            uint256 collateralAmount,
            uint256 collateralFeeAmount
        ) = IEscrow(escrow).handleBorrow(
                msg.sender,
                underlyingReceiver,
                borrowUnderlyingAmount
            );
        IERC20Metadata(settlementToken).safeTransferFrom(
            msg.sender,
            escrow,
            collateralAmount
        );
        address _feeHandler = feeHandler;
        if (_feeHandler != address(0) && collateralFeeAmount > 0) {
            IERC20Metadata(settlementToken).safeTransferFrom(
                msg.sender,
                feeHandler,
                collateralFeeAmount
            );
            IFeeHandler(_feeHandler).provisionFees(
                settlementToken,
                collateralFeeAmount
            );
        }
        emit Borrow(
            msg.sender,
            escrow,
            underlyingReceiver,
            borrowUnderlyingAmount,
            collateralAmount,
            collateralFeeAmount
        );
    }

    function repay(
        address escrow,
        address collateralReceiver,
        uint128 repayUnderlyingAmount
    ) external {
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        (address underlyingToken, uint256 unlockedCollateralAmount) = IEscrow(
            escrow
        ).handleRepay(msg.sender, collateralReceiver, repayUnderlyingAmount);
        IERC20Metadata(underlyingToken).safeTransferFrom(
            msg.sender,
            escrow,
            repayUnderlyingAmount
        );
        emit Repay(
            escrow,
            escrow,
            collateralReceiver,
            repayUnderlyingAmount,
            unlockedCollateralAmount
        );
    }

    function takeQuote(
        address escrowOwner,
        DataTypes.RFQInitialization calldata rfqInitialization,
        address distPartner
    ) external {
        DataTypes.TakeQuotePreview memory preview = previewTakeQuote(
            rfqInitialization,
            distPartner
        );

        if (preview.status != DataTypes.RFQStatus.Success) {
            revert Errors.InvalidTakeQuote();
        }

        isQuoteUsed[preview.msgHash] = true;

        (address escrow, uint256 oTokenIndex) = _createEscrow();
        uint96 exerciseFee = getExerciseFee();
        IEscrow(escrow).initializeRFQMatch(
            address(this),
            escrowOwner,
            preview.quoter,
            exerciseFee,
            rfqInitialization,
            oTokenIndex
        );

        IERC20Metadata(rfqInitialization.optionInfo.underlyingToken)
            .safeTransferFrom(
                msg.sender,
                escrow,
                rfqInitialization.optionInfo.notional
            );
        IERC20Metadata(preview.premiumToken).safeTransferFrom(
            preview.quoter,
            msg.sender,
            rfqInitialization.rfqQuote.premium -
                preview.matchFeeDistPartner -
                preview.matchFeeProtocol
        );
        if (preview.matchFeeDistPartner > 0) {
            IERC20Metadata(preview.premiumToken).safeTransferFrom(
                preview.quoter,
                distPartner,
                preview.matchFeeDistPartner
            );
        }
        if (preview.matchFeeProtocol > 0) {
            address _feeHandler = feeHandler;
            IERC20Metadata(preview.premiumToken).safeTransferFrom(
                preview.quoter,
                _feeHandler,
                preview.matchFeeProtocol
            );
            IFeeHandler(_feeHandler).provisionFees(
                preview.premiumToken,
                preview.matchFeeProtocol
            );
        }
        emit TakeQuote(
            msg.sender,
            escrowOwner,
            escrow,
            rfqInitialization,
            preview,
            exerciseFee,
            distPartner
        );
    }

    function takeSwapQuote(
        address to,
        DataTypes.SwapQuote calldata swapQuote
    ) external {
        if (block.timestamp > swapQuote.validUntil) {
            revert Errors.SwapQuoteExpired();
        }

        bytes32 msgHash = keccak256(
            abi.encode(
                block.chainid,
                swapQuote.takerGiveToken,
                swapQuote.takerGiveAmount,
                swapQuote.makerGiveToken,
                swapQuote.makerGiveAmount,
                swapQuote.validUntil
            )
        );

        address maker;
        if (swapQuote.eip1271Maker == address(0)) {
            maker = ECDSA.recover(
                MessageHashUtils.toEthSignedMessageHash(msgHash),
                swapQuote.signature
            );
        } else {
            bool isValid = _checkEIP1271Signature(
                swapQuote.eip1271Maker,
                msgHash,
                swapQuote.signature
            );
            if (!isValid) {
                revert Errors.InvalidEIP1271Signature();
            }
            maker = swapQuote.eip1271Maker;
        }

        if (quotesPaused[maker]) {
            revert Errors.SwapQuotePaused();
        }
        if (isSwapQuoteUsed[msgHash]) {
            revert Errors.SwapQuoteAlreadyUsed();
        }
        isSwapQuoteUsed[msgHash] = true;
        IERC20Metadata(swapQuote.takerGiveToken).safeTransferFrom(
            msg.sender,
            maker,
            swapQuote.takerGiveAmount
        );
        IERC20Metadata(swapQuote.makerGiveToken).safeTransferFrom(
            maker,
            to,
            swapQuote.makerGiveAmount
        );
        emit TakeSwapQuote(msg.sender, to, maker, swapQuote);
    }

    function togglePauseQuotes() external {
        bool isPaused = quotesPaused[msg.sender];
        quotesPaused[msg.sender] = !isPaused;
        emit PauseQuotes(msg.sender, !isPaused);
    }

    function mintOption(
        address optionReceiver,
        address escrowOwner,
        DataTypes.OptionInfo calldata optionInfo,
        DataTypes.OptionNaming calldata optionNaming,
        address distPartner
    ) external {
        if (optionInfo.underlyingToken == optionInfo.settlementToken) {
            revert Errors.InvalidTokenPair();
        }
        if (optionInfo.notional == 0) {
            revert Errors.InvalidNotional();
        }
        if (block.timestamp > optionInfo.expiry) {
            revert Errors.InvalidExpiry();
        }
        if (optionInfo.expiry < optionInfo.earliestExercise + 1 days) {
            revert Errors.InvalidEarliestExercise();
        }
        if (optionInfo.advancedSettings.borrowCap > BASE) {
            revert Errors.InvalidBorrowCap();
        }
        (address escrow, ) = _createEscrow();
        (uint256 mintFeeProtocol, uint256 mintFeeDistPartner) = getMintFees(
            distPartner,
            optionInfo.notional
        );
        address mintOptionTokensTo = (mintFeeProtocol > 0 ||
            mintFeeDistPartner > 0)
            ? address(this)
            : optionReceiver;
        IEscrow(escrow).initializeMintOption(
            address(this),
            escrowOwner,
            mintOptionTokensTo,
            getExerciseFee(),
            optionInfo,
            optionNaming
        );
        IERC20Metadata(optionInfo.underlyingToken).safeTransferFrom(
            msg.sender,
            escrow,
            optionInfo.notional
        );
        if (mintOptionTokensTo == address(this)) {
            IERC20Metadata(escrow).safeTransfer(
                optionReceiver,
                optionInfo.notional - mintFeeProtocol - mintFeeDistPartner
            );
            if (mintFeeDistPartner > 0) {
                IERC20Metadata(escrow).safeTransfer(
                    distPartner,
                    mintFeeDistPartner
                );
            }
            if (mintFeeProtocol > 0) {
                IERC20Metadata(escrow).safeTransfer(
                    feeHandler,
                    mintFeeProtocol
                );
                IFeeHandler(feeHandler).provisionFees(escrow, mintFeeProtocol);
            }
        }
        emit MintOption(
            msg.sender,
            optionReceiver,
            escrowOwner,
            optionInfo,
            mintFeeProtocol,
            mintFeeDistPartner,
            distPartner
        );
    }

    function setFeeHandler(address newFeeHandler) external onlyOwner {
        address oldFeeHandler = feeHandler;
        if (oldFeeHandler == newFeeHandler) {
            revert Errors.FeeHandlerAlreadySet();
        }
        feeHandler = newFeeHandler;
        emit NewFeeHandler(oldFeeHandler, newFeeHandler);
    }

    function emitTransferEvent(
        address from,
        address to,
        uint256 value
    ) external {
        address escrow = msg.sender;
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        emit Transfer(escrow, from, to, value);
    }

    function emitTransferOwnershipEvent(
        address oldOwner,
        address newOwner
    ) external {
        address escrow = msg.sender;
        if (!isEscrow[escrow]) {
            revert Errors.NotAnEscrow();
        }
        emit TransferOwnership(escrow, oldOwner, newOwner);
    }

    function getExerciseFee() public view returns (uint96 exerciseFee) {
        address _feeHandler = feeHandler;
        if (_feeHandler == address(0)) {
            return 0;
        }
        exerciseFee = IFeeHandler(_feeHandler).exerciseFee();
        exerciseFee = exerciseFee > MAX_EXERCISE_FEE
            ? MAX_EXERCISE_FEE
            : exerciseFee;
    }

    function getMatchFees(
        address distPartner,
        uint128 optionPremium,
        DataTypes.OptionInfo calldata optionInfo
    )
        public
        view
        returns (uint128 matchFeeProtocol, uint128 matchFeeDistPartner)
    {
        address _feeHandler = feeHandler;
        if (_feeHandler != address(0)) {
            (uint256 matchFee, uint256 matchFeeDistPartnerShare) = IFeeHandler(
                _feeHandler
            ).getMatchFeeInfo(distPartner, optionPremium, optionInfo);

            uint256 cappedMatchFee = matchFee > MAX_MATCH_FEE
                ? MAX_MATCH_FEE
                : matchFee;
            uint256 cappedMatchFeeDistPartnerShare = matchFeeDistPartnerShare >
                BASE
                ? BASE
                : matchFeeDistPartnerShare;
            uint256 totalMatchFee = (optionPremium * cappedMatchFee) / BASE;
            matchFeeDistPartner = SafeCast.toUint128(
                (totalMatchFee * cappedMatchFeeDistPartnerShare) / BASE
            );
            matchFeeProtocol = SafeCast.toUint128(
                totalMatchFee - matchFeeDistPartner
            );
        }
    }

    function getMintFees(
        address distPartner,
        uint128 notional
    )
        public
        view
        returns (uint256 mintFeeProtocol, uint256 mintFeeDistPartner)
    {
        address _feeHandler = feeHandler;
        if (_feeHandler != address(0)) {
            (uint256 mintFee, uint256 mintFeeDistPartnerShare) = IFeeHandler(
                _feeHandler
            ).getMintFeeInfo(distPartner);

            // @dev: use same cap as for match fee
            uint256 cappedMintFee = mintFee > MAX_MATCH_FEE
                ? MAX_MATCH_FEE
                : mintFee;
            uint256 cappedMintFeeDistPartnerShare = mintFeeDistPartnerShare >
                BASE
                ? BASE
                : mintFeeDistPartnerShare;
            uint256 totalMintFee = (notional * cappedMintFee) / BASE;
            mintFeeDistPartner =
                (totalMintFee * cappedMintFeeDistPartnerShare) /
                BASE;
            mintFeeProtocol = totalMintFee - mintFeeDistPartner;
        }
    }

    function previewTakeQuote(
        DataTypes.RFQInitialization calldata rfqInitialization,
        address distPartner
    ) public view returns (DataTypes.TakeQuotePreview memory) {
        bytes32 msgHash = keccak256(
            abi.encode(
                block.chainid,
                rfqInitialization.optionInfo,
                rfqInitialization.rfqQuote.premium,
                rfqInitialization.rfqQuote.validUntil
            )
        );

        address quoter;
        if (rfqInitialization.rfqQuote.eip1271Maker == address(0)) {
            quoter = ECDSA.recover(
                MessageHashUtils.toEthSignedMessageHash(msgHash),
                rfqInitialization.rfqQuote.signature
            );
        } else {
            bool isValid = _checkEIP1271Signature(
                rfqInitialization.rfqQuote.eip1271Maker,
                msgHash,
                rfqInitialization.rfqQuote.signature
            );
            if (!isValid) {
                return
                    _createTakeQuotePreview(
                        DataTypes.RFQStatus.InvalidEIP1271Signature,
                        msgHash,
                        quoter
                    );
            }
            quoter = rfqInitialization.rfqQuote.eip1271Maker;
        }

        if (
            rfqInitialization.optionInfo.underlyingToken ==
            rfqInitialization.optionInfo.settlementToken ||
            rfqInitialization.optionInfo.notional == 0 ||
            rfqInitialization.optionInfo.strike == 0 ||
            rfqInitialization.optionInfo.expiry <
            rfqInitialization.optionInfo.earliestExercise + 1 days ||
            rfqInitialization.optionInfo.advancedSettings.borrowCap > BASE
        ) {
            return
                _createTakeQuotePreview(
                    DataTypes.RFQStatus.InvalidQuote,
                    msgHash,
                    quoter
                );
        }

        if (
            block.timestamp > rfqInitialization.rfqQuote.validUntil ||
            block.timestamp > rfqInitialization.optionInfo.expiry
        ) {
            return
                _createTakeQuotePreview(
                    DataTypes.RFQStatus.Expired,
                    msgHash,
                    quoter
                );
        }
        if (isQuoteUsed[msgHash]) {
            return
                _createTakeQuotePreview(
                    DataTypes.RFQStatus.AlreadyExecuted,
                    msgHash,
                    quoter
                );
        }

        if (quotesPaused[quoter]) {
            return
                _createTakeQuotePreview(
                    DataTypes.RFQStatus.QuotesPaused,
                    msgHash,
                    quoter
                );
        }
        (uint128 matchFeeProtocol, uint128 matchFeeDistPartner) = getMatchFees(
            distPartner,
            rfqInitialization.rfqQuote.premium,
            rfqInitialization.optionInfo
        );
        return
            DataTypes.TakeQuotePreview({
                status: DataTypes.RFQStatus.Success,
                msgHash: msgHash,
                quoter: quoter,
                premium: rfqInitialization.rfqQuote.premium,
                premiumToken: rfqInitialization
                    .optionInfo
                    .advancedSettings
                    .premiumTokenIsUnderlying
                    ? rfqInitialization.optionInfo.underlyingToken
                    : rfqInitialization.optionInfo.settlementToken,
                matchFeeProtocol: matchFeeProtocol,
                matchFeeDistPartner: matchFeeDistPartner
            });
    }

    function getEscrows(
        uint256 from,
        uint256 numElements
    ) external view returns (address[] memory _escrowArray) {
        uint256 length = _escrows.length;
        if (numElements == 0 || from + numElements > length) {
            revert Errors.InvalidGetEscrowsQuery();
        }
        _escrowArray = new address[](numElements);
        for (uint256 i = 0; i < numElements; ++i) {
            _escrowArray[i] = _escrows[from + i];
        }
    }

    function _createEscrow()
        internal
        returns (address escrow, uint256 oTokenIndex)
    {
        oTokenIndex = numEscrows + 1;
        escrow = Clones.cloneDeterministic(
            escrowImpl,
            keccak256(abi.encode(oTokenIndex))
        );
        numEscrows = oTokenIndex;
        isEscrow[escrow] = true;
        _escrows.push(escrow);
    }

    function _createTakeQuotePreview(
        DataTypes.RFQStatus status,
        bytes32 msgHash,
        address quoter
    ) internal pure returns (DataTypes.TakeQuotePreview memory) {
        return
            DataTypes.TakeQuotePreview({
                status: status,
                msgHash: msgHash,
                quoter: quoter,
                premium: 0,
                premiumToken: address(0),
                matchFeeProtocol: 0,
                matchFeeDistPartner: 0
            });
    }

    function _checkEIP1271Signature(
        address erc1271Wallet,
        bytes32 msgHash,
        bytes calldata signature
    ) internal view returns (bool isValid) {
        // @dev: legacy EIP1271 wallets using bytes4(keccak256("isValidSignature(bytes,bytes)")
        // are not supported
        (bool success, bytes memory returnData) = erc1271Wallet.staticcall(
            abi.encodeWithSelector(
                EIP1271_SIG_AND_MAGIC_VALUE,
                msgHash,
                signature
            )
        );
        if (success && returnData.length == 32) {
            bytes4 result = abi.decode(returnData, (bytes4));
            return result == EIP1271_SIG_AND_MAGIC_VALUE;
        }
        return false;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.20;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeCast {
    /**
     * @dev Value doesn't fit in an uint of `bits` size.
     */
    error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value);

    /**
     * @dev An int value doesn't fit in an uint of `bits` size.
     */
    error SafeCastOverflowedIntToUint(int256 value);

    /**
     * @dev Value doesn't fit in an int of `bits` size.
     */
    error SafeCastOverflowedIntDowncast(uint8 bits, int256 value);

    /**
     * @dev An uint value doesn't fit in an int of `bits` size.
     */
    error SafeCastOverflowedUintToInt(uint256 value);

    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        if (value > type(uint248).max) {
            revert SafeCastOverflowedUintDowncast(248, value);
        }
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        if (value > type(uint240).max) {
            revert SafeCastOverflowedUintDowncast(240, value);
        }
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        if (value > type(uint232).max) {
            revert SafeCastOverflowedUintDowncast(232, value);
        }
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        if (value > type(uint224).max) {
            revert SafeCastOverflowedUintDowncast(224, value);
        }
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        if (value > type(uint216).max) {
            revert SafeCastOverflowedUintDowncast(216, value);
        }
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        if (value > type(uint208).max) {
            revert SafeCastOverflowedUintDowncast(208, value);
        }
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        if (value > type(uint200).max) {
            revert SafeCastOverflowedUintDowncast(200, value);
        }
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        if (value > type(uint192).max) {
            revert SafeCastOverflowedUintDowncast(192, value);
        }
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        if (value > type(uint184).max) {
            revert SafeCastOverflowedUintDowncast(184, value);
        }
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        if (value > type(uint176).max) {
            revert SafeCastOverflowedUintDowncast(176, value);
        }
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        if (value > type(uint168).max) {
            revert SafeCastOverflowedUintDowncast(168, value);
        }
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        if (value > type(uint160).max) {
            revert SafeCastOverflowedUintDowncast(160, value);
        }
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        if (value > type(uint152).max) {
            revert SafeCastOverflowedUintDowncast(152, value);
        }
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        if (value > type(uint144).max) {
            revert SafeCastOverflowedUintDowncast(144, value);
        }
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        if (value > type(uint136).max) {
            revert SafeCastOverflowedUintDowncast(136, value);
        }
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        if (value > type(uint128).max) {
            revert SafeCastOverflowedUintDowncast(128, value);
        }
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        if (value > type(uint120).max) {
            revert SafeCastOverflowedUintDowncast(120, value);
        }
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        if (value > type(uint112).max) {
            revert SafeCastOverflowedUintDowncast(112, value);
        }
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        if (value > type(uint104).max) {
            revert SafeCastOverflowedUintDowncast(104, value);
        }
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        if (value > type(uint96).max) {
            revert SafeCastOverflowedUintDowncast(96, value);
        }
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        if (value > type(uint88).max) {
            revert SafeCastOverflowedUintDowncast(88, value);
        }
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        if (value > type(uint80).max) {
            revert SafeCastOverflowedUintDowncast(80, value);
        }
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        if (value > type(uint72).max) {
            revert SafeCastOverflowedUintDowncast(72, value);
        }
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        if (value > type(uint64).max) {
            revert SafeCastOverflowedUintDowncast(64, value);
        }
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        if (value > type(uint56).max) {
            revert SafeCastOverflowedUintDowncast(56, value);
        }
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        if (value > type(uint48).max) {
            revert SafeCastOverflowedUintDowncast(48, value);
        }
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        if (value > type(uint40).max) {
            revert SafeCastOverflowedUintDowncast(40, value);
        }
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        if (value > type(uint32).max) {
            revert SafeCastOverflowedUintDowncast(32, value);
        }
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        if (value > type(uint24).max) {
            revert SafeCastOverflowedUintDowncast(24, value);
        }
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        if (value > type(uint16).max) {
            revert SafeCastOverflowedUintDowncast(16, value);
        }
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        if (value > type(uint8).max) {
            revert SafeCastOverflowedUintDowncast(8, value);
        }
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        if (value < 0) {
            revert SafeCastOverflowedIntToUint(value);
        }
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(248, value);
        }
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(240, value);
        }
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(232, value);
        }
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(224, value);
        }
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(216, value);
        }
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(208, value);
        }
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(200, value);
        }
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(192, value);
        }
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(184, value);
        }
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(176, value);
        }
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(168, value);
        }
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(160, value);
        }
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(152, value);
        }
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(144, value);
        }
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(136, value);
        }
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(128, value);
        }
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(120, value);
        }
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(112, value);
        }
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(104, value);
        }
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(96, value);
        }
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(88, value);
        }
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(80, value);
        }
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(72, value);
        }
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(64, value);
        }
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(56, value);
        }
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(48, value);
        }
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(40, value);
        }
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(32, value);
        }
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(24, value);
        }
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(16, value);
        }
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        if (downcasted != value) {
            revert SafeCastOverflowedIntDowncast(8, value);
        }
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        if (value > uint256(type(int256).max)) {
            revert SafeCastOverflowedUintToInt(value);
        }
        return int256(value);
    }
}

// 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/math/SignedMath.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

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

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        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_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
     * representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

{
  "compilationTarget": {
    "contracts/Router.sol": "Router"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": []
}