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// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity 0.8.28;

import {Initializable} from "@openzeppelin-contracts-upgradeable/proxy/utils/Initializable.sol";
import {ERC20PermitUser} from "src/other/ERC20PermitUser.sol";
import {EIP712Upgradeable} from "@openzeppelin-contracts-upgradeable/utils/cryptography/EIP712Upgradeable.sol";
import {IERC20} from "@openzeppelin-contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin-contracts/token/ERC20/utils/SafeERC20.sol";
import {ECDSA} from "@openzeppelin-contracts/utils/cryptography/ECDSA.sol";
import {IVersioned} from "src/other/IVersioned.sol";

/**
 * @title AggLayer Gas Porter
 * @notice Bridge ERC-20 tokens and gas* from any AggLayer network to another.
 * @notice *A gasset is a dynamic asset that can be used to pay for gas on any AggLayer network. When a gasset arrives on the destination network, it becomes, or gets converted to, the native token of that network.
 * @dev Works with LxLy Bridge and any DEX.
 * @dev This contract does not have setters. To make changes to it, upgrade it.
 * @dev GitHub repository: https://github.com/agglayer/gas-porter.
 */
contract GasPorter is Initializable, ERC20PermitUser, EIP712Upgradeable, IVersioned {
    using SafeERC20 for IERC20;

    enum GassetType {
        NATIVE_TOKEN,
        ERC20_TOKEN,
        SETTLEMENT_TOKEN
    }

    enum GassetSource {
        MSG_VALUE,
        ERC20_ALLOWANCE,
        DEX_SWAP
    }

    /**
     * @param gassetType The type of gasset that will be bridged.
     * @param gassetSource From where Gas Porter will get the gasset.
     * @param gassetAmount If the gasset source is the DEX, specify the minimum expected amount here.
     * @param swapCalldata If the gasset source is the DEX.
     * @param gassetPermitData If any. Additionaly, if the asset and gasset are the same ERC20 token, the permitted amount must be the sum of `gassetAmount` and `tokenAmount`, and `tokenPermitData` must be empty.
     * @param tokenPermitData If any. Must be empty if the asset and gasset are the same ERC20 token and `gassetPermitData` is provided. For more information, see the documentation for `gassetPermitData`.
     * @param trackingNumber Enables reverse look-up of a `ConversionRequested` event, given a `GassetConverted` or `ConversionFailed` event. Using the current UNIX timestamp is recommended.
     */
    struct Cargo {
        // Call:
        uint256 msgValue;
        // Destination:
        uint32 destinationNetwork;
        uint32 destinationNetworkGasTokenNetwork;
        address destinationNetworkGasTokenAddress;
        address destinationAddress;
        address destinationGasPorterDex;
        // Gasset:
        GassetType gassetType;
        GassetSource gassetSource;
        uint256 gassetAmount;
        // Asset:
        address token;
        uint256 tokenAmount;
        // Enforced, but not verified:
        bytes gassetPermitData;
        bytes swapCalldata;
        bytes tokenPermitData;
        bool forceUpdateGlobalExitRoot;
        // Tracking:
        uint256 trackingNumber;
    }

    /**
     * @dev A signature that authorizes anyone to convert the settlement token to the native token for the recipient on a destination network, as long as the requirements the recipient set are satisfied. See the documentation for `ConversionAuthorizationData`.
     * @dev Terminology: Gas Porter allows a sender to bridge an asset and gas to themselves or another EOA. When bridging to another EOA, that EOA must signs the authorization. For this reason, the word 'recipient' is used to distinguish who performs an action when the sender and recipient are different.
     * @param signature The signer must be the recipient.
     */
    struct ConversionAuthorization {
        ConversionAuthorizationData data;
        bytes signature;
    }

    /**
     * @dev Conversion requirements set and signed by the recipient, and submitted by the sender. See the documentation for `_CONVERSION_AUTHORIZATION_DATA_TYPE_HASH`.
     * @param trackingNumber See the documentation for `Cargo`.
     * @param gassetDestinationPermitData If any.
     * @param gassetDestinationAmount The amount of the gasset that will be exchanged for the native token on the destination network.
     * @param destinationNativeTokenMinimumAmount The minimum amount of the native token the recipient must receive from the DEX swap.
     * @param deadline The timestamp after which the authorization is no longer valid.
     */
    struct ConversionAuthorizationData {
        uint32 originNetworkID;
        uint256 trackingNumber;
        address signer;
        uint256 conversionNonce;
        address gassetDestinationAddress;
        bytes gassetDestinationPermitData;
        uint256 gassetDestinationAmount;
        bytes destinationSwapCalldata;
        uint256 destinationNativeTokenMinimumAmount;
        uint256 deadline;
    }

    /**
     * @dev Storage of the Gas Porter contract.
     * @dev It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions when using with upgradeable contracts.
     * @custom:storage-location erc7201:agglayer.storage.GasPorter
     */
    struct GasPorterStorage {
        /**
         * @dev Nonces prevent replay attacks for `convertGasset`.
         * @dev Implementing a custom nonce mechanism in Gas Porter, rather then relying on ERC-20 permit nonce, lowers the chance of nonce collisions. For more information, see the documentation for `convertGasset`.
         */
        mapping(address user => mapping(uint32 originNetworkID => uint256 nonce)) _conversionNonces;
    }

    /// @dev The storage slot at which Gas Porter storage starts, following the EIP-7201 standard.
    /// @dev Calculated as `keccak256(abi.encode(uint256(keccak256("agglayer.storage.GasPorter")) - 1)) & ~bytes32(uint256(0xff))`.
    bytes32 private constant _GAS_PORTER_STORAGE = 0xe95e2b6c2122717d5b0c6c83181db905f0f9f127ac1a07137c3b512219374c00;

    /// @dev The EIP-712 type hash for `ConversionAuthorizationData`.
    bytes32 private constant _CONVERSION_AUTHORIZATION_DATA_TYPE_HASH = keccak256(
        "ConversionAuthorizationData(uint32 originNetworkID,uint256 trackingNumber,address signer,uint256 conversionNonce,address gassetDestinationAddress,bytes gassetDestinationPermitData,uint256 gassetDestinationAmount,bytes destinationSwapCalldata,uint256 destinationNativeTokenMinimumAmount,uint256 deadline)"
    );

    /// @dev See the documentation for `gasTokenAddress`.
    address internal constant _NON_ETH_ORIGINAL_NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    ILxlyBridge public immutable lxlyBridge;
    uint32 public immutable networkID;
    /// @notice The gas token network represents the LxLy ID of the network the native token of this network originated on. For example, if this network's native token is ABC, but ABC was originally created on Ethereum and bridged to this network, the gas token network will be the LxLy ID of Ethereum.
    uint32 public immutable gasTokenNetwork;
    /// @notice The gas token address represents the address of the native token of this network on the network it originated on. For example, if this network's native token is ABC, but ABC was originally created on Ethereum and bridged to this network, the gas token address will be the address of ABC on Ethereum. Important: LxLy Bridged assumes that address zero always means ETH. It is proposed that address `0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE` (a.k.a., the dolphin address) should be used for original native tokens of other L1s (a.k.a., "non-ETH original native tokens").
    address public immutable gasTokenAddress;
    address public immutable dex;
    /// @notice Settlement token can be used when there is no liqudity on an origin network to swap the native token of that network for the original or representative native token of a destination network.
    /// @notice Terminology: Origin network can mean different things, depending on whether we are talking about transactions or tokens. In context of transactions, it refers to the network `bridgeAssetAndGas` is called from, as opposed to the 'destination' network (where `convertGasset` may be called after bridging). In context of tokens, it refers to the network the token was originally created on, before it got bridged to other networks.
    /// @dev The token must support ERC-20 permit (ERC-2612).
    address public immutable settlementToken;
    /// @notice Whether the settlement token happens to be the native token on this network.
    bool public immutable settlementTokenIsNativeToken;

    /// @dev Reverse look-up is possible via `trackingNumber`. See `ConversionRequested` and `ConversionFailed`.
    event ConversionRequested(
        uint256 indexed trackingNumber,
        uint32 destinationNetwork,
        address destinationAddress,
        address gasset,
        uint256 bridgedGassetAmount
    );
    /// @dev Without `signer`, anyone can fake `originNetworkID` and `trackingNumber`.
    event GassetConverted(uint32 indexed originNetworkID, uint256 indexed trackingNumber, address indexed signer);
    /// @dev Without `signer`, anyone can fake `originNetworkID` and `trackingNumber`.
    event ConversionFailed(
        uint32 indexed originNetworkID,
        uint256 indexed trackingNumber,
        address indexed signer,
        address msgSender,
        bytes reason
    );

    error InvalidGassetTypeAndGassetSourceCombination();
    error GasPorterOnCurrentNetworkDoesNotSupportDexSwapAsGassetSourceYet();
    error InsufficientMessageValue(uint256 amount, uint256 minimumAmount);
    error DestinationNetworkCannotBeCurrentNetwork();
    error InvalidToken();
    error TokenAmountCannotBeZero();
    error GassetAmountCannotBeZero();
    error DestinationAddressCannotBeAddressZero();
    error GassetPermitDataMustBeEmptyWhenGassetIsNativeToken();
    error SwapCalldataCannotBeEmptyWhenGassetSourceIsDexSwap();
    error SwapCalldataMustBeEmptyWhenGassetSourceIsNotDexSwap();
    error TokenPermitDataMustBeEmptyWhenAssetIsNativeToken();
    error GassetTypeCannotBeNativeTokenWhenNativeTokensAreDifferent();
    error GassetTypeCannotBeERC20TokenWhenNativeTokensAreTheSame();
    error CannotDetermineGassetMakeSureDestinationNetworkParametersAreCorrect();
    error CannotDetermineGassetBecauseRepresentativeTokenDoesNotExist();
    error TokenPermitDataMustBeEmptyWhenAssetAndGassetAreTheSameAndGassetPermitDataIsProvided();
    error GassetCannotBeDolphinAddressDidYouMeanAddressZero();
    error CannotDetermineConversionMakeSureDestinationNetworkParametersAreCorrect();
    error CannotDetermineConversionBecauseRepresentativeTokenDoesNotExist();
    error GasPorterOnDestinationNetworkDoesNotSupportGassetConversionYet();
    error SwapFailedBecauseDexRevertedWithoutExplanation();
    error SwapFailedBecauseDexGaveInsufficientAmount(uint256 amount);
    error CannotReturnExcessiveMessageValueToYou();
    error SwapCalldataCannotBeProvidedWhenMessageValueIsProvided();
    error GasPorterOnCurrentNetworkDoesNotSupportGassetConversionYet();
    error SignerInAuthorizationDataAndActualSignerDoNotMatch();
    error ThisFunctionCanOnlyBeCalledByGasPorter();
    error OriginNetworkCannotBeCurrentNetwork();
    error AuthorizationExpired();
    error InvalidConversionNonce();
    error CannotDeliverNativeTokenToRecipient();

    constructor(address lxlyBridge_, address dex_, address settlementToken_) {
        _disableInitializers();

        lxlyBridge = ILxlyBridge(lxlyBridge_);
        networkID = lxlyBridge.networkID();
        gasTokenNetwork = lxlyBridge.gasTokenNetwork();
        gasTokenAddress = lxlyBridge.gasTokenAddress();

        dex = dex_;
        settlementToken = settlementToken_;
        settlementTokenIsNativeToken = settlementToken == address(0);
    }

    // The DEX may return excessive message value on a swap.
    receive() external payable {}

    modifier onlySelf() {
        if (msg.sender != address(this)) revert ThisFunctionCanOnlyBeCalledByGasPorter();
        _;
    }

    function initialize() external initializer {
        __EIP712_init("GasPorter", "1.0.0");
    }

    function conversionNonce(address user, uint32 originNetworkID) external view returns (uint256) {
        return _getGasPorterStorage()._conversionNonces[user][originNetworkID];
    }

    /*
    0. GAS PORTER IS DESIGNED TO BE USED WITH POLYGON PORTAL UI AND THE AUTO-CLAIM SERVICE WITH THE GAS PORTING FUNCTIONALITY.
    */

    /*
    1. USE `plotRoute` OFFCHAIN TO GENERATE CALLDATA FOR `bridgeAssetAndGas`.
    */

    /**
     * @notice Verifies inputs and generates calldata for `bridgeAssetAndGas` (including the four-byte function selector).
     * @dev You can use `determineGasset` prior to calling this function to check if your expected gasset matches the actual gasset.
     * @dev This function was not designed to be used onchain.
     */
    function plotRoute(Cargo calldata cargo) external view returns (uint256 msgValue, bytes memory callData) {
        // =============== ::: VERIFY INPUTS ::: ===============

        bool assetIsNativeToken = cargo.token == address(0);
        bool gassetIsNativeToken = cargo.gassetType == GassetType.NATIVE_TOKEN
            || cargo.gassetType == GassetType.SETTLEMENT_TOKEN && settlementTokenIsNativeToken;

        if (
            cargo.gassetSource == GassetSource.MSG_VALUE && !gassetIsNativeToken
                || cargo.gassetSource == GassetSource.ERC20_ALLOWANCE && gassetIsNativeToken
                || cargo.gassetSource == GassetSource.DEX_SWAP && gassetIsNativeToken
        ) revert InvalidGassetTypeAndGassetSourceCombination();

        if (cargo.gassetSource == GassetSource.DEX_SWAP && dex == address(0)) {
            revert GasPorterOnCurrentNetworkDoesNotSupportDexSwapAsGassetSourceYet();
        }

        if (cargo.destinationNetwork == networkID) revert DestinationNetworkCannotBeCurrentNetwork();

        if (cargo.token == _NON_ETH_ORIGINAL_NATIVE_TOKEN) revert InvalidToken();
        if (cargo.tokenAmount == 0) revert TokenAmountCannotBeZero();

        if (cargo.gassetAmount == 0) revert GassetAmountCannotBeZero();

        if (cargo.destinationAddress == address(0)) revert DestinationAddressCannotBeAddressZero();

        if (gassetIsNativeToken && cargo.gassetPermitData.length != 0) {
            revert GassetPermitDataMustBeEmptyWhenGassetIsNativeToken();
        }

        if (cargo.gassetSource == GassetSource.DEX_SWAP && cargo.swapCalldata.length == 0) {
            revert SwapCalldataCannotBeEmptyWhenGassetSourceIsDexSwap();
        }
        if (cargo.gassetSource != GassetSource.DEX_SWAP && cargo.swapCalldata.length != 0) {
            revert SwapCalldataMustBeEmptyWhenGassetSourceIsNotDexSwap();
        }

        if (assetIsNativeToken && cargo.tokenPermitData.length != 0) {
            revert TokenPermitDataMustBeEmptyWhenAssetIsNativeToken();
        }

        uint256 minMsgValue = (assetIsNativeToken ? cargo.tokenAmount : 0)
            + (gassetIsNativeToken ? cargo.gassetAmount : 0) + (cargo.gassetSource == GassetSource.DEX_SWAP ? 1 : 0);
        if (cargo.msgValue < minMsgValue) revert InsufficientMessageValue(cargo.msgValue, minMsgValue);

        // =============== ::: DETERMINE GASSET ::: ===============

        address gasset = determineGasset(
            cargo.destinationNetworkGasTokenNetwork, cargo.destinationNetworkGasTokenAddress, cargo.gassetType
        );

        if (gasset == cargo.token && cargo.gassetPermitData.length != 0 && cargo.tokenPermitData.length != 0) {
            revert TokenPermitDataMustBeEmptyWhenAssetAndGassetAreTheSameAndGassetPermitDataIsProvided();
        }

        // =============== ::: DETERMINE CONVERSION ::: ===============

        bool conversionRequired = determineConversion(
            cargo.destinationNetworkGasTokenNetwork, cargo.destinationNetworkGasTokenAddress, gasset
        );

        if (conversionRequired && cargo.destinationGasPorterDex == address(0)) {
            revert GasPorterOnDestinationNetworkDoesNotSupportGassetConversionYet();
        }

        // =============== ::: PLOT ROUTE ::: ===============

        // Solves the stack-too-deep error.
        bytes memory tokenPermitData = cargo.tokenPermitData;

        msgValue = cargo.msgValue;

        callData = abi.encodeCall(
            GasPorter.bridgeAssetAndGas,
            (
                conversionRequired,
                cargo.forceUpdateGlobalExitRoot,
                cargo.destinationNetwork,
                cargo.destinationAddress,
                cargo.trackingNumber,
                gasset,
                cargo.gassetSource,
                cargo.gassetPermitData,
                cargo.gassetAmount,
                cargo.swapCalldata,
                cargo.token,
                cargo.tokenAmount,
                tokenPermitData
            )
        );
    }

    /*
    2. CALL `bridgeAssetAndGas` WITH THE CALLDATA YOU GENERATED WITH `plotRoute`.
    */

    /**
     * @notice IMPORTANT: This function does NOT verify inputs! Please use `plotRoute` to generate correct calldata (including the four-byte function selector).
     * @notice Bridge an ERC-20 token and gas to another AggLayer network.
     * @dev This function emits a `ConversionRequested` event. UIs or backends should record the transaction hash to track conversions they are responsible for.
     */
    function bridgeAssetAndGas(
        bool requestConversion,
        bool forceUpdateGlobalExitRoot,
        uint32 destinationNetwork,
        address destinationAddress,
        uint256 trackingNumber,
        address gasset,
        GassetSource gassetSource,
        bytes calldata gassetPermitData,
        uint256 gassetAmount,
        bytes calldata swapCalldata,
        address token,
        uint256 tokenAmount,
        bytes calldata tokenPermitData
    ) external payable {
        // =============== ::: PREPARE GASSET ::: ===============

        bool assetIsNativeToken = token == address(0);
        bool assetAndGassetAreTheSame = gasset == token;

        // Used for return data of low-level calls.
        bool ok;
        bytes memory data;
        // Used when the asset and gasset are the same ERC-20 token.
        uint256 tokenAndGassetSum;

        if (gassetSource == GassetSource.ERC20_ALLOWANCE) {
            // Try to save gas by bundling the asset and gasset together.
            if (assetAndGassetAreTheSame) {
                tokenAndGassetSum = tokenAmount + gassetAmount;
                // We override the `gassetAmount` temporarily.
                gassetAmount += tokenAmount;
            }

            if (gassetPermitData.length != 0) _permit(gasset, gassetAmount, gassetPermitData);

            IERC20(gasset).safeTransferFrom(msg.sender, address(this), gassetAmount);
            gassetAmount = IERC20(gasset).balanceOf(address(this));

            IERC20(gasset).forceApprove(address(lxlyBridge), gassetAmount);

            if (assetAndGassetAreTheSame) {
                // Separate `gassetAmount` and `tokenAmount`.
                uint256 tokenProportion = tokenAmount * 1e18 / tokenAndGassetSum;
                tokenAmount = (gassetAmount * tokenProportion + 1e18 - 1) / 1e18;
                gassetAmount -= tokenAmount;
            }
        } else if (gassetSource == GassetSource.DEX_SWAP) {
            (ok, data) = dex.call{value: assetIsNativeToken ? msg.value - tokenAmount : msg.value}(swapCalldata);

            if (!ok) {
                if (data.length == 0) revert SwapFailedBecauseDexRevertedWithoutExplanation();
                // Surface the original error.
                assembly {
                    revert(add(32, data), mload(data))
                }
            }

            uint256 actualGassetAmount = IERC20(gasset).balanceOf(address(this));
            if (actualGassetAmount < gassetAmount) {
                revert SwapFailedBecauseDexGaveInsufficientAmount(actualGassetAmount);
            }
            gassetAmount = actualGassetAmount;

            IERC20(gasset).forceApprove(address(lxlyBridge), gassetAmount);
        }

        // =============== ::: BRIDGE GASSET ::: ===============

        bool gassetIsNativeToken = gasset == address(0);

        uint256 bridgedGassetAmount = gassetIsNativeToken ? gassetAmount : IERC20(gasset).balanceOf(address(lxlyBridge));
        // `bridgedGassetAmount` will be adjusted below.

        // Try to save gas by bundling the asset and gasset together.
        if (assetAndGassetAreTheSame) {
            tokenAndGassetSum = tokenAmount + gassetAmount;
            // We override the `gassetAmount`.
            gassetAmount += tokenAmount;
        }

        lxlyBridge.bridgeAsset{value: gassetIsNativeToken ? gassetAmount : 0}(
            destinationNetwork,
            destinationAddress,
            gassetAmount,
            gasset,
            assetAndGassetAreTheSame ? forceUpdateGlobalExitRoot : false,
            ""
        );

        if (!gassetIsNativeToken) {
            bridgedGassetAmount = IERC20(gasset).balanceOf(address(lxlyBridge)) - bridgedGassetAmount;
            if (assetAndGassetAreTheSame) {
                // Separate `bridgedGassetAmount`.
                uint256 tokenProportion = tokenAmount * 1e18 / tokenAndGassetSum;
                tokenAmount = (bridgedGassetAmount * tokenProportion + 1e18 - 1) / 1e18;
                bridgedGassetAmount -= tokenAmount;
            }
        }

        // =============== ::: BRIDGE ASSET ::: ===============

        if (!assetAndGassetAreTheSame) {
            if (!assetIsNativeToken) {
                if (tokenPermitData.length != 0) _permit(token, tokenAmount, tokenPermitData);

                IERC20(token).safeTransferFrom(msg.sender, address(this), tokenAmount);
                tokenAmount = IERC20(token).balanceOf(address(this));

                IERC20(token).forceApprove(address(lxlyBridge), tokenAmount);
            }

            lxlyBridge.bridgeAsset{value: assetIsNativeToken ? tokenAmount : 0}(
                destinationNetwork, destinationAddress, tokenAmount, token, forceUpdateGlobalExitRoot, ""
            );
        }

        // =============== ::: DRAIN CONTRACT ::: ===============

        if (address(this).balance > 0) {
            (ok,) = msg.sender.call{value: address(this).balance}("");
            if (!ok) revert CannotReturnExcessiveMessageValueToYou();
        }

        // =============== ::: EMIT EVENT ::: ===============

        if (requestConversion) {
            emit ConversionRequested(
                trackingNumber, destinationNetwork, destinationAddress, gasset, bridgedGassetAmount
            );
        }
    }

    /*
    3. IF `bridgeAssetAndGas` EMITTED `ConversionRequested`, REQUEST FROM `destinationAddress` TO SIGN CONVERSION AUTHORIZATION.
    
    How to do this:
    
    - If the sender is the `destinationAddress`, show the relevant data and prompt the sender to sign the authorization.
    - If the sender is not the `destinationAddress`, the UI should generate a sharable link.
        - When the link is opened, it shows the relevant data with a button to sign it.
        - Once signed, it checks that the signer is the `destinationAddress`.
    */

    /*
    4. AFTER THE ASSET AND GASSET HAVE BEEN BRIDGED, THE AUTO-CLAIM SERVICE NEEDS TO CALL `convertGasset` ON THE DESTINATION NETWORK WITH THE AUTHORIZATION YOU GOT FROM `destinationAddress`.
    */

    /**
     * @notice Called by the Auto-Claim Service on the destination network when the settlement token has been bridged and needs to be converted to the native token. (See https://github.com/0xPolygon/auto-claim-service).
     * @dev This function also supports conversion of any ERC-20 token the user already has on the destination network to the native token. That means LxLy Bridge's `bridgeAsset` can be called directly on an origin network to bridge a desired asset, followed by a call to `convertGasset` on the destination network to deliver the native token, without waiting.
     * @dev Using a permit with the infinite amount may be more convenient because the user won't necessarily have to approve Gas Porter (or submit a permit) when they use `bridgeAssetAndGas` or `convertGasset` next time.
     * @dev The DEX may change before the gasset arrives on the destination network. In a such case, new authorization may be required. Additionally, due to the fact that the Auto-Claim Service may use different accounts for gasset conversions, it is not possible to use message-sender-specific conversion nonces (as opposed to recipient-specific nonces), which would have prevented nonce collisions when `bridgeAssetAndGas` is called multiple times from the same origin network in a short period of time.
     */
    function convertGasset(ConversionAuthorization calldata authorization) external {
        // =============== ::: CHECK AVAILABILITY ::: ===============

        if (dex == address(0)) revert GasPorterOnCurrentNetworkDoesNotSupportGassetConversionYet();

        // =============== ::: AUTHENTICATE RECIPIENT ::: ===============

        bytes32 digest = _hashTypedDataV4(
            keccak256(
                abi.encode(
                    _CONVERSION_AUTHORIZATION_DATA_TYPE_HASH,
                    authorization.data.originNetworkID,
                    authorization.data.trackingNumber,
                    authorization.data.signer,
                    authorization.data.conversionNonce,
                    authorization.data.gassetDestinationAddress,
                    keccak256(authorization.data.gassetDestinationPermitData),
                    authorization.data.gassetDestinationAmount,
                    keccak256(authorization.data.destinationSwapCalldata),
                    authorization.data.destinationNativeTokenMinimumAmount,
                    authorization.data.deadline
                )
            )
        );

        // This should be `destinationAddress` from `bridgeAssetAndGas`.
        address signer = ECDSA.recover(digest, authorization.signature);

        // This prevents recovery of a random address.
        if (signer != authorization.data.signer) revert SignerInAuthorizationDataAndActualSignerDoNotMatch();

        // =============== ::: SELF-CALL & EMIT EVENT ::: ===============

        try this.convertGasset_(authorization.data, signer) {
            emit GassetConverted(authorization.data.originNetworkID, authorization.data.trackingNumber, signer);
        } catch (bytes memory reason) {
            emit ConversionFailed(
                authorization.data.originNetworkID, authorization.data.trackingNumber, signer, msg.sender, reason
            );
        }
    }

    /**
     * @notice This function can only be called by Gas Porter. Please use `convertGasset` instead.
     */
    function convertGasset_(ConversionAuthorizationData calldata authorizationData, address signer) external onlySelf {
        // =============== ::: VERIFY CONVERSION ::: ===============

        if (authorizationData.originNetworkID == networkID) revert OriginNetworkCannotBeCurrentNetwork();

        if (block.timestamp > authorizationData.deadline) revert AuthorizationExpired();

        // Verify the nonce and increment it.
        if (
            authorizationData.conversionNonce
                != _getGasPorterStorage()._conversionNonces[signer][authorizationData.originNetworkID]++
        ) {
            revert InvalidConversionNonce();
        }

        // =============== ::: PREPARE GASSET ::: ===============

        if (authorizationData.gassetDestinationPermitData.length != 0) {
            _permit(
                authorizationData.gassetDestinationAddress,
                authorizationData.gassetDestinationAmount,
                authorizationData.gassetDestinationPermitData
            );
        }

        IERC20 gasset = IERC20(authorizationData.gassetDestinationAddress);

        gasset.safeTransferFrom(signer, address(this), authorizationData.gassetDestinationAmount);
        uint256 gassetBalance = gasset.balanceOf(address(this));

        gasset.forceApprove(dex, gassetBalance);

        // =============== ::: CONVERT GASSET ::: ===============

        // Used for return data of low-level calls.
        bool ok;
        bytes memory data;

        (ok, data) = dex.call(authorizationData.destinationSwapCalldata);

        if (!ok) {
            if (data.length == 0) revert SwapFailedBecauseDexRevertedWithoutExplanation();
            // Surface the original error.
            assembly {
                revert(add(32, data), mload(data))
            }
        }

        uint256 nativeTokenAmount = address(this).balance;

        if (nativeTokenAmount < authorizationData.destinationNativeTokenMinimumAmount) {
            revert SwapFailedBecauseDexGaveInsufficientAmount(nativeTokenAmount);
        }

        // =============== ::: DELIVER NATIVE TOKEN ::: ===============

        (ok,) = signer.call{value: nativeTokenAmount}("");
        if (!ok) revert CannotDeliverNativeTokenToRecipient();

        // ================= ::: DRAIN CONTRACT ::: ===============

        gassetBalance = gasset.balanceOf(address(this));

        if (gassetBalance > 0) {
            gasset.safeTransfer(signer, gassetBalance);
        }
    }

    /*
    5. NOTIFY `destinationAddress` IF THE CONVERSION FAILED TO RETRY.
    */

    /**
     * @notice Invalidates the current conversion nonce of the message sender for a given origin network.
     * @notice This will cause all conversion authorizations with that nonce to fail.
     */
    function invalidateConversionNonce(uint32 originNetworkID) external {
        ++_getGasPorterStorage()._conversionNonces[msg.sender][originNetworkID];
    }

    /// @inheritdoc IVersioned
    function version() external pure returns (string memory) {
        return "1.0.0";
    }

    /**
     * @notice Determines the gasset based on the destination network's gas token network, gas token address, and the selected gasset type.
     * @dev This function is used by `plotRoute` to determine the gasset. For more information, see the documentation for `plotRoute`.
     */
    function determineGasset(
        uint32 destinationNetworkGasTokenNetwork,
        address destinationNetworkGasTokenAddress,
        GassetType gassetType
    ) public view returns (address gasset) {
        address WETHToken_ = WETHToken();
        bool nativeTokensAreTheSame =
            destinationNetworkGasTokenNetwork == gasTokenNetwork && destinationNetworkGasTokenAddress == gasTokenAddress;

        // This prevents incorrectly pointing the gas token of the destination network to the native token of the current network, when the native token of the current network originates from another network, or to an ERC-20 token on the current network, when the ERC-20 token originates from another network.
        if (destinationNetworkGasTokenNetwork == networkID) {
            if (
                destinationNetworkGasTokenAddress == address(0)
                    || destinationNetworkGasTokenAddress == _NON_ETH_ORIGINAL_NATIVE_TOKEN
            ) {
                if (!nativeTokensAreTheSame) {
                    revert CannotDetermineGassetMakeSureDestinationNetworkParametersAreCorrect();
                }
            } else {
                // Caution: WETH is unmapped on LxLy Bridge: `lxlyBridge.wrappedTokenToTokenInfo` returns `(0, address(0))` for both WETH and non-existent wrapped tokens so that case must be handled manually.
                if (destinationNetworkGasTokenAddress == WETHToken_ && WETHToken_ != address(0)) {
                    revert CannotDetermineGassetMakeSureDestinationNetworkParametersAreCorrect();
                } else {
                    (uint32 originNetwork, address originTokenAddress) =
                        lxlyBridge.wrappedTokenToTokenInfo(destinationNetworkGasTokenAddress);
                    if (originNetwork != 0 || originTokenAddress != address(0)) {
                        revert CannotDetermineGassetMakeSureDestinationNetworkParametersAreCorrect();
                    }
                }
            }
        }

        if (gassetType == GassetType.NATIVE_TOKEN) {
            // The native tokens are the same.
            if (!nativeTokensAreTheSame) revert GassetTypeCannotBeNativeTokenWhenNativeTokensAreDifferent();
        } else if (gassetType == GassetType.ERC20_TOKEN) {
            if (nativeTokensAreTheSame) revert GassetTypeCannotBeERC20TokenWhenNativeTokensAreTheSame();
            if (destinationNetworkGasTokenNetwork == networkID) {
                // The native token of the destination network originates from this network as an ERC-20 token.
                if (
                    destinationNetworkGasTokenAddress == address(0)
                        || destinationNetworkGasTokenAddress == _NON_ETH_ORIGINAL_NATIVE_TOKEN
                ) {
                    revert CannotDetermineGassetMakeSureDestinationNetworkParametersAreCorrect();
                }
                gasset = destinationNetworkGasTokenAddress;
            } else {
                // The native token of the destination network does not originate from this network.
                // Caution: WETH is unmapped on LxLy Bridge: `lxlyBridge.getTokenWrappedAddress(0, address(0))` returns `address(0)`, so that case must be handled manually.
                if (destinationNetworkGasTokenNetwork == 0 && destinationNetworkGasTokenAddress == address(0)) {
                    gasset = WETHToken_;
                } else {
                    gasset = lxlyBridge.getTokenWrappedAddress(
                        destinationNetworkGasTokenNetwork, destinationNetworkGasTokenAddress
                    );
                    if (gasset == address(0)) revert CannotDetermineGassetBecauseRepresentativeTokenDoesNotExist();
                }
            }
        } else {
            gasset = settlementToken;
        }
    }

    /**
     * @notice Determines whether a gasset conversion will be required on the destination network.
     */
    function determineConversion(
        uint32 destinationNetworkGasTokenNetwork,
        address destinationNetworkGasTokenAddress,
        address gasset
    ) public view returns (bool conversionRequired) {
        if (gasset == _NON_ETH_ORIGINAL_NATIVE_TOKEN) revert GassetCannotBeDolphinAddressDidYouMeanAddressZero();

        address WETHToken_ = WETHToken();
        bool nativeTokensAreTheSame =
            destinationNetworkGasTokenNetwork == gasTokenNetwork && destinationNetworkGasTokenAddress == gasTokenAddress;
        bool gassetIsNativeToken = gasset == address(0);

        // This prevents incorrectly pointing the gas token of the destination network to the native token of the current network, when the native token of the current network originates from another network, or to an ERC-20 token on the current network, when the ERC-20 token originates from another network.
        if (destinationNetworkGasTokenNetwork == networkID) {
            if (
                destinationNetworkGasTokenAddress == address(0)
                    || destinationNetworkGasTokenAddress == _NON_ETH_ORIGINAL_NATIVE_TOKEN
            ) {
                if (!nativeTokensAreTheSame) {
                    revert CannotDetermineConversionMakeSureDestinationNetworkParametersAreCorrect();
                }
            } else {
                // Caution: WETH is unmapped on LxLy Bridge: `lxlyBridge.wrappedTokenToTokenInfo` returns `(0, address(0))` for both WETH and non-existent wrapped tokens so that case must be handled manually.
                if (destinationNetworkGasTokenAddress == WETHToken_ && WETHToken_ != address(0)) {
                    revert CannotDetermineConversionMakeSureDestinationNetworkParametersAreCorrect();
                } else {
                    (uint32 originNetwork, address originTokenAddress) =
                        lxlyBridge.wrappedTokenToTokenInfo(destinationNetworkGasTokenAddress);
                    if (originNetwork != 0 || originTokenAddress != address(0)) {
                        revert CannotDetermineConversionMakeSureDestinationNetworkParametersAreCorrect();
                    }
                }
            }
        }

        // (The native tokens are the same).
        if (nativeTokensAreTheSame && gassetIsNativeToken) { /* conversion not required */ } else {
            // (The native token of the destination network originates from this network).
            if (destinationNetworkGasTokenNetwork == networkID) {
                conversionRequired = gasset != destinationNetworkGasTokenAddress;
            } else {
                // (The native token of the destination network does not originate from this network).
                // Caution: WETH is unmapped on LxLy Bridge: `lxlyBridge.wrappedTokenToTokenInfo` returns `(0, address(0))` for both WETH and non-existent wrapped tokens so that case must be handled manually.
                if (destinationNetworkGasTokenNetwork == 0 && destinationNetworkGasTokenAddress == address(0)) {
                    conversionRequired = gasset != WETHToken_;
                } else {
                    (uint32 originNetwork, address originTokenAddress) = lxlyBridge.wrappedTokenToTokenInfo(gasset);
                    if (originNetwork == 0 && originTokenAddress == address(0)) {
                        revert CannotDetermineConversionBecauseRepresentativeTokenDoesNotExist();
                    }
                    conversionRequired = originNetwork != destinationNetworkGasTokenNetwork
                        || originTokenAddress != destinationNetworkGasTokenAddress;
                }
            }
        }
    }

    /**
     * @dev Info: `WETHToken` can change on LxLy Bridge if there is `setSovereignWETHAddress` function (part of the LxLy custom mappings update).
     */
    function WETHToken() public view returns (address) {
        return lxlyBridge.WETHToken();
    }

    /**
     * @dev Returns a pointer to the ERC-7201 storage namespace.
     */
    function _getGasPorterStorage() private pure returns (GasPorterStorage storage $) {
        assembly {
            $.slot := _GAS_PORTER_STORAGE
        }
    }
}

interface ILxlyBridge {
    function networkID() external returns (uint32);
    function gasTokenAddress() external returns (address);
    function gasTokenNetwork() external returns (uint32);
    // Info: `WETHToken` can change on LxLy Bridge if there is `setSovereignWETHAddress` function (part of the LxLy custom mappings update).
    function WETHToken() external view returns (address);
    // Caution: WETH is unmapped on LxLy Bridge: `lxlyBridge.wrappedTokenToTokenInfo` returns `(0, address(0))` for both WETH and non-existent wrapped tokens so that case must be handled manually.
    function wrappedTokenToTokenInfo(address wrappedToken)
        external
        view
        returns (uint32 originNetwork, address originTokenAddress);
    // Caution: WETH is unmapped on LxLy Bridge: `lxlyBridge.getTokenWrappedAddress(0, address(0))` returns `address(0)`, so that case must be handled manually.
    function getTokenWrappedAddress(uint32 originNetwork, address originTokenAddress) external view returns (address);
    function bridgeAsset(
        uint32 destinationNetwork,
        address destinationAddress,
        uint256 amount,
        address token,
        bool forceUpdateGlobalExitRoot,
        bytes calldata permitData
    ) external payable;
}

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

pragma solidity ^0.8.20;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Storage of the initializable contract.
     *
     * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
     * when using with upgradeable contracts.
     *
     * @custom:storage-location erc7201:openzeppelin.storage.Initializable
     */
    struct InitializableStorage {
        /**
         * @dev Indicates that the contract has been initialized.
         */
        uint64 _initialized;
        /**
         * @dev Indicates that the contract is in the process of being initialized.
         */
        bool _initializing;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;

    /**
     * @dev The contract is already initialized.
     */
    error InvalidInitialization();

    /**
     * @dev The contract is not initializing.
     */
    error NotInitializing();

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint64 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
     * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
     * production.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        // Cache values to avoid duplicated sloads
        bool isTopLevelCall = !$._initializing;
        uint64 initialized = $._initialized;

        // Allowed calls:
        // - initialSetup: the contract is not in the initializing state and no previous version was
        //                 initialized
        // - construction: the contract is initialized at version 1 (no reininitialization) and the
        //                 current contract is just being deployed
        bool initialSetup = initialized == 0 && isTopLevelCall;
        bool construction = initialized == 1 && address(this).code.length == 0;

        if (!initialSetup && !construction) {
            revert InvalidInitialization();
        }
        $._initialized = 1;
        if (isTopLevelCall) {
            $._initializing = true;
        }
        _;
        if (isTopLevelCall) {
            $._initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint64 version) {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing || $._initialized >= version) {
            revert InvalidInitialization();
        }
        $._initialized = version;
        $._initializing = true;
        _;
        $._initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        _checkInitializing();
        _;
    }

    /**
     * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
     */
    function _checkInitializing() internal view virtual {
        if (!_isInitializing()) {
            revert NotInitializing();
        }
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        // solhint-disable-next-line var-name-mixedcase
        InitializableStorage storage $ = _getInitializableStorage();

        if ($._initializing) {
            revert InvalidInitialization();
        }
        if ($._initialized != type(uint64).max) {
            $._initialized = type(uint64).max;
            emit Initialized(type(uint64).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint64) {
        return _getInitializableStorage()._initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _getInitializableStorage()._initializing;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        assembly {
            $.slot := INITIALIZABLE_STORAGE
        }
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity 0.8.28;

abstract contract ERC20PermitUser {
    /// @dev Calculated as `bytes4(keccak256(bytes("permit(address,address,uint256,uint256,uint8,bytes32,bytes32)")))`.
    bytes4 private constant _PERMIT_SIGNATURE = 0xd505accf;
    // Calculated as `bytes4(keccak256(bytes("permit(address,address,uint256,uint256,bool,uint8,bytes32,bytes32)")))`.
    bytes4 private constant _PERMIT_SIGNATURE_DAI = 0x8fcbaf0c;

    error InsufficientAmountInERC20Permit(uint256 amount, uint256 minimumAmount);
    error UnknownFunctionSelectorInERC20Permit();

    function _permit(address token, uint256 minimumAmount, bytes calldata permitData) internal {
        bytes4 sig = bytes4(permitData[:4]);
        if (sig == _PERMIT_SIGNATURE) {
            uint256 amount = abi.decode(permitData[68:100], (uint256));
            if (amount < minimumAmount) {
                revert InsufficientAmountInERC20Permit(amount, minimumAmount);
            }
        } else if (sig == _PERMIT_SIGNATURE_DAI) {
            bool allowed = abi.decode(permitData[132:164], (bool));
            if (!allowed) {
                revert InsufficientAmountInERC20Permit(0, minimumAmount);
            }
        } else {
            // This prevents arbitrary calls to arbitrary addresses.
            revert UnknownFunctionSelectorInERC20Permit();
        }
        (bool ok,) = address(token).call(permitData);
        // We do not revert on failure to avoid potential DoS attacks caused by frontrunning the permit application.
        // If the allowance is insufficient, the subsequent transfer call will fail.
        ok;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.20;

import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
import {IERC5267} from "@openzeppelin/contracts/interfaces/IERC5267.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding scheme specified in the EIP requires a domain separator and a hash of the typed structured data, whose
 * encoding is very generic and therefore its implementation in Solidity is not feasible, thus this contract
 * does not implement the encoding itself. Protocols need to implement the type-specific encoding they need in order to
 * produce the hash of their typed data using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the {_domainSeparatorV4} function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 */
abstract contract EIP712Upgradeable is Initializable, IERC5267 {
    bytes32 private constant TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    /// @custom:storage-location erc7201:openzeppelin.storage.EIP712
    struct EIP712Storage {
        /// @custom:oz-renamed-from _HASHED_NAME
        bytes32 _hashedName;
        /// @custom:oz-renamed-from _HASHED_VERSION
        bytes32 _hashedVersion;

        string _name;
        string _version;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.EIP712")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant EIP712StorageLocation = 0xa16a46d94261c7517cc8ff89f61c0ce93598e3c849801011dee649a6a557d100;

    function _getEIP712Storage() private pure returns (EIP712Storage storage $) {
        assembly {
            $.slot := EIP712StorageLocation
        }
    }

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
        __EIP712_init_unchained(name, version);
    }

    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
        EIP712Storage storage $ = _getEIP712Storage();
        $._name = name;
        $._version = version;

        // Reset prior values in storage if upgrading
        $._hashedName = 0;
        $._hashedVersion = 0;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        return _buildDomainSeparator();
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash(), block.chainid, address(this)));
    }

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

    /**
     * @dev See {IERC-5267}.
     */
    function eip712Domain()
        public
        view
        virtual
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        )
    {
        EIP712Storage storage $ = _getEIP712Storage();
        // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized
        // and the EIP712 domain is not reliable, as it will be missing name and version.
        require($._hashedName == 0 && $._hashedVersion == 0, "EIP712: Uninitialized");

        return (
            hex"0f", // 01111
            _EIP712Name(),
            _EIP712Version(),
            block.chainid,
            address(this),
            bytes32(0),
            new uint256[](0)
        );
    }

    /**
     * @dev The name parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Name() internal view virtual returns (string memory) {
        EIP712Storage storage $ = _getEIP712Storage();
        return $._name;
    }

    /**
     * @dev The version parameter for the EIP712 domain.
     *
     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
     * are a concern.
     */
    function _EIP712Version() internal view virtual returns (string memory) {
        EIP712Storage storage $ = _getEIP712Storage();
        return $._version;
    }

    /**
     * @dev The hash of the name parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Name` instead.
     */
    function _EIP712NameHash() internal view returns (bytes32) {
        EIP712Storage storage $ = _getEIP712Storage();
        string memory name = _EIP712Name();
        if (bytes(name).length > 0) {
            return keccak256(bytes(name));
        } else {
            // If the name is empty, the contract may have been upgraded without initializing the new storage.
            // We return the name hash in storage if non-zero, otherwise we assume the name is empty by design.
            bytes32 hashedName = $._hashedName;
            if (hashedName != 0) {
                return hashedName;
            } else {
                return keccak256("");
            }
        }
    }

    /**
     * @dev The hash of the version parameter for the EIP712 domain.
     *
     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Version` instead.
     */
    function _EIP712VersionHash() internal view returns (bytes32) {
        EIP712Storage storage $ = _getEIP712Storage();
        string memory version = _EIP712Version();
        if (bytes(version).length > 0) {
            return keccak256(bytes(version));
        } else {
            // If the version is empty, the contract may have been upgraded without initializing the new storage.
            // We return the version hash in storage if non-zero, otherwise we assume the version is empty by design.
            bytes32 hashedVersion = $._hashedVersion;
            if (hashedVersion != 0) {
                return hashedVersion;
            } else {
                return keccak256("");
            }
        }
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

        bytes memory returndata = address(token).functionCall(data);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/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 OR Apache-2.0
pragma solidity 0.8.28;

interface IVersioned {
    /// @return The version of the contract.
    function version() external pure returns (string memory);
}

// 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) (interfaces/IERC5267.sol)

pragma solidity ^0.8.20;

interface IERC5267 {
    /**
     * @dev MAY be emitted to signal that the domain could have changed.
     */
    event EIP712DomainChanged();

    /**
     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
     * signature.
     */
    function eip712Domain()
        external
        view
        returns (
            bytes1 fields,
            string memory name,
            string memory version,
            uint256 chainId,
            address verifyingContract,
            bytes32 salt,
            uint256[] memory extensions
        );
}

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

pragma solidity ^0.8.20;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (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) (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));
    }
}

// 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/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);
        }
    }
}

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}

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ILxlyBridge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"networkID","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"msgValue","type":"uint256"},{"internalType":"uint32","name":"destinationNetwork","type":"uint32"},{"internalType":"uint32","name":"destinationNetworkGasTokenNetwork","type":"uint32"},{"internalType":"address","name":"destinationNetworkGasTokenAddress","type":"address"},{"internalType":"address","name":"destinationAddress","type":"address"},{"internalType":"address","name":"destinationGasPorterDex","type":"address"},{"internalType":"enum GasPorter.GassetType","name":"gassetType","type":"uint8"},{"internalType":"enum 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GasPorter.Cargo","name":"cargo","type":"tuple"}],"name":"plotRoute","outputs":[{"internalType":"uint256","name":"msgValue","type":"uint256"},{"internalType":"bytes","name":"callData","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"settlementToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"settlementTokenIsNativeToken","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"stateMutability":"payable","type":"receive"}]

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0000000000000000000000002a3dd3eb832af982ec71669e178424b10dca2ede0000000000000000000000006131b5fae19ea4f9d964eac0408e4408b66337b50000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : lxlyBridge_ (address): 0x2a3DD3EB832aF982ec71669E178424b10Dca2EDe
Arg [1] : dex_ (address): 0x6131B5fae19EA4f9D964eAc0408E4408b66337b5
Arg [2] : settlementToken_ (address): 0x0000000000000000000000000000000000000000

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000002a3dd3eb832af982ec71669e178424b10dca2ede
Arg [1] : 0000000000000000000000006131b5fae19ea4f9d964eac0408e4408b66337b5
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000