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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {AxelarExecutable} from "./axelar/AxelarExecutable.sol";
import {IAxelarGateway} from "./interfaces/IAxelarGateway.sol";
import {IAxelarGasService} from "@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IAxelarGasService.sol";
import {InterchainAddressTracker} from "@axelar-network/axelar-gmp-sdk-solidity/contracts/utils/InterchainAddressTracker.sol";

import {OApp, Origin, MessagingFee} from "./oapp/OApp.sol";
import {ILayerZeroEndpointV2} from "./oapp/interfaces/ILayerZeroEndpointV2.sol";
import {OptionsBuilder} from "@layerzerolabs/oapp-evm/contracts/oapp/libs/OptionsBuilder.sol";

import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {Initializable} from "@openzeppelin/contracts/proxy/utils/Initializable.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

import {ISquidMulticall} from "./interfaces/ISquidMulticall.sol";
import {ISpoke} from "./interfaces/ISpoke.sol";
import {Utils} from "./libraries/Utils.sol";

contract Spoke is ISpoke, OApp, AxelarExecutable, Initializable, InterchainAddressTracker, ReentrancyGuard {
    using Address for address payable;
    using SafeERC20 for IERC20;
    using OptionsBuilder for bytes;

    /// @dev token address => fee amount collected in this token
    mapping(address => uint256) public tokenToCollectedFees;
    mapping(bytes32 => OrderStatus) public orderHashToStatus;
    mapping(bytes32 => SettlementStatus) public settlementToStatus;

    IAxelarGasService public gasService;
    ISquidMulticall public squidMulticall;
    address public feeCollector;
    /// @dev Chain name must follow Axelar format
    /// https://docs.axelar.dev/dev/reference/mainnet-contract-addresses
    string public hubChainName;
    string public hubAddress;
    /// @dev Endpoint must follow LayerZero format
    /// https://docs.layerzero.network/v2/developers/evm/technical-reference/deployed-contracts
    uint32 public hubEndpoint;
    bytes32 public hubAddressBytes32;

    modifier onlyFeeCollector() {
        if (msg.sender != feeCollector) revert OnlyFeeCollector();
        _;
    }

    modifier onlyTrustedAddress(string calldata fromChainName, string calldata fromContractAddress) {
        if (!isTrustedAddress(fromChainName, fromContractAddress)) revert OnlyTrustedAddress();
        _;
    }

    constructor() 
        AxelarExecutable(0xC012A11111111111111111111111111111111111)
        OApp(0xC012A11111111111111111111111111111111111, msg.sender)
        Ownable(msg.sender)
    {}

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                        Initializer                       //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @notice One-time use initialize function for the protocol. This function is required to be called
    /// within the deploying transaction to set the initial state of the Spoke.sol contract. These parameters
    /// cannot be updated after initialization.
    /// @notice The _hubChainName and _hubAddress will be set as the trusted chain and address for Axelar
    /// general message passing. Only the trusted Hub.sol contract can execute interchain transactions
    /// in the Spoke.sol contract.
    /// @param _axelarGateway Address of the relevant Axelar's AxelarGateway.sol contract deployment.
    /// @param _axelarGasService Address of the relevant Axelar's AxelarGasService.sol contract deployment.
    /// @param _squidMulticall Address of the relevant Squid's SquidMulticall.sol contract deployment.
    /// @param _feeCollector Address of the EOA that would collect fees from the protocol. Recommended to use
    /// a multisig wallet.
    /// @param _hubChainName Chain name of the chain the Hub.sol contract will be deployed to, must follow
    /// Axelar's chain name format. This chain name will be passed to the Axelar Gateway to determine the
    /// target chain for general message passing from the Spoke.
    /// @param _hubAddress String for the address of the relevant Hub.sol contract, this should be computed
    /// deterministically using the CREATE2 opcode to remain permissionless.
    /// @param _endpoint Address of the LayerZero EndpointV2 contract, responsible for managing cross-chain
    /// communications.
    /// @param _owner Address set as the owner of the Spoke.sol contract upon deployment.
    /// @param _hub Address of the relevant Hub.sol contract, this should be computed deterministically
    /// using the CREATE2 opcode to remain permissionless.
    /// @param _hubEndpoint Endpoint ID as specified by LayerZero:
    /// https://docs.layerzero.network/v2/developers/evm/technical-reference/deployed-contracts
    function initialize(
        IAxelarGateway _axelarGateway,
        IAxelarGasService _axelarGasService,
        ISquidMulticall _squidMulticall,
        address _feeCollector,
        string memory _hubChainName,
        string memory _hubAddress,
        ILayerZeroEndpointV2 _endpoint,
        address _owner,
        address _hub,
        uint32 _hubEndpoint
    ) external initializer {
        transferOwnership(_owner);
        gateway = _axelarGateway;
        gasService = _axelarGasService;
        squidMulticall = _squidMulticall;
        feeCollector = _feeCollector;
        hubChainName = _hubChainName;
        hubAddress = _hubAddress;
        _setTrustedAddress(_hubChainName, _hubAddress);

        if (address(_endpoint) != 0x1111111111111111111111111111111111111111) {
            endpoint = _endpoint;
            _endpoint.setDelegate(_owner);
            hubEndpoint = _hubEndpoint;
            _setPeer(_hubEndpoint, addressToBytes32(_hub));
            hubAddressBytes32 = addressToBytes32(_hub);
        }
    
        emit SpokeInitialized(
            gateway,
            gasService,
            squidMulticall,
            feeCollector,
            hubChainName,
            hubAddress
        );
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                      Source endpoints                    //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @inheritdoc ISpoke
    function createOrder(Order calldata order) external payable {
        _createOrder(order, msg.sender);
    }

    /// @notice Executes the intent on the source chain, locking the ERC20 or native tokens in the
    /// Spoke.sol contract, setting the OrderStatus to CREATED, and making the order eligible
    /// to be filled on the destination chain.
    /// @dev Orders are tied to the keccak256 hash of the Order therefore each Order is unique 
    /// according to the parameters in the Order and can only be executed a single time.
    /// @param order Order to be executed by the Spoke.sol contract in the format of the Order struct.
    /// @param fromAddress Address of the holder of funds for a particular order.
    function _createOrder(Order calldata order, address fromAddress) private nonReentrant {
        bytes32 orderHash = keccak256(abi.encode(order));

        if (orderHashToStatus[orderHash] != OrderStatus.EMPTY) revert OrderAlreadyExists();
        if (block.timestamp >= order.expiry) revert OrderExpired();
        if (order.fromChain != _getChainId()) revert InvalidSourceChain();
        if (order.fromToken != Utils.NATIVE_TOKEN && msg.value != 0) revert UnexpectedNativeToken();

        orderHashToStatus[orderHash] = OrderStatus.CREATED;

        if (order.fromToken == Utils.NATIVE_TOKEN) {
            if (msg.value != order.fromAmount) revert InvalidNativeAmount();
        } else {
            IERC20(order.fromToken).safeTransferFrom(fromAddress, address(this), order.fromAmount);
        }

        emit OrderCreated(orderHash, order);
    }

    /// @inheritdoc ISpoke
    function refundOrder(Order calldata order) external nonReentrant {
        bytes32 orderHash = keccak256(abi.encode(order));

        if (orderHashToStatus[orderHash] != OrderStatus.CREATED) revert OrderStateNotCreated();
        if (msg.sender != order.filler) {
            if (!(block.timestamp > (order.expiry + 4 days))) revert OrderNotExpired();
        }
        if (order.fromChain != _getChainId()) revert InvalidSourceChain();

        orderHashToStatus[orderHash] = OrderStatus.REFUNDED;

        if (order.fromToken == Utils.NATIVE_TOKEN) {
            payable(order.fromAddress).sendValue(order.fromAmount);
        } else {
            IERC20(order.fromToken).safeTransfer(order.fromAddress, order.fromAmount);
        }

        emit OrderRefunded(orderHash);
    }

    /// @inheritdoc ISpoke
    function collectFees(address[] calldata tokens) external onlyFeeCollector {
        if (tokens.length == 0) revert InvalidArrayLength();
        for (uint256 i = 0; i < tokens.length; i++) {
            uint256 feeAmount = tokenToCollectedFees[tokens[i]];
            if (feeAmount > 0) {
                tokenToCollectedFees[tokens[i]] = 0;
                if (tokens[i] == Utils.NATIVE_TOKEN) {
                    payable(feeCollector).sendValue(feeAmount);
                } else {
                    IERC20(tokens[i]).safeTransfer(feeCollector, feeAmount);
                }
            }

            emit FeesCollected(feeCollector, tokens[i], feeAmount);
        } 
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                   Destination endpoints                  //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @inheritdoc ISpoke
    function fillOrder(Order calldata order, ISquidMulticall.Call[] calldata calls) public payable {
        if (order.toToken == Utils.NATIVE_TOKEN && msg.value != order.fillAmount) {
            revert InvalidNativeAmount();
        }

        _fillOrder(order, calls);
    }

    /// @notice Fills an order on the destination chain, transferring the order.fillAmount of
    /// order.toToken from the order.filler to the order.toAddress, setting the SettlementStatus to
    /// FILLED, and making the order eligible to be forwarded to the Hub for processing.
    /// @dev Orders that contain post hooks (postHookHash != bytes32(0)) require SquidMulticall calls
    /// to be provided during fill. These extra calls will be ran by SquidMulticall after filling the
    /// order during the same transaction.
    /// @dev Only the order.filler can fill any particular order.
    /// @param order Order to be filled by the Spoke.sol contract in the format of the Order struct.
    /// @param calls Calls to be ran by the multicall after fill, formatted to the SquidMulticall Call struct.
    function _fillOrder(Order memory order, ISquidMulticall.Call[] calldata calls) internal nonReentrant {
        bytes32 orderHash = keccak256(abi.encode(order));

        if (settlementToStatus[orderHash] != SettlementStatus.EMPTY) revert OrderAlreadySettled();
        if (msg.sender != order.filler) revert OnlyFillerCanSettle();
        if (order.toChain != _getChainId()) revert InvalidDestinationChain();

        settlementToStatus[orderHash] = SettlementStatus.FILLED;

        if (order.toToken == Utils.NATIVE_TOKEN) {
            if (order.postHookHash != bytes32(0)) {
                bytes memory callsData = abi.encode(calls);
                if (keccak256(callsData) != order.postHookHash) revert InvalidPostHookProvided();
                ISquidMulticall(squidMulticall).run{value: order.fillAmount}(calls);
            } else {
                payable(order.toAddress).sendValue(order.fillAmount);
            }
        } else {
            if (order.postHookHash != bytes32(0)) {
                bytes memory callsData = abi.encode(calls);
                if (keccak256(callsData) != order.postHookHash) revert InvalidPostHookProvided();

                IERC20(order.toToken).safeTransferFrom(
                    order.filler,
                    address(squidMulticall),
                    order.fillAmount
                );

                ISquidMulticall(squidMulticall).run(calls);
            } else {
                IERC20(order.toToken).safeTransferFrom(
                    order.filler,
                    order.toAddress,
                    order.fillAmount
                );
            }
        }

        emit OrderFilled(orderHash, order);
    }

    /// @inheritdoc ISpoke
    function forwardSettlements(
        bytes32[] calldata orderHashes,
        uint256 lzFee,
        uint128 gasLimit,
        Provider provider
    ) external payable nonReentrant {
        if (msg.value == 0) revert GasRequired();
        if (orderHashes.length == 0) revert InvalidArrayLength();

        for (uint256 i = 0; i < orderHashes.length; i++) {
            if (
                settlementToStatus[orderHashes[i]] == SettlementStatus.EMPTY
            ) revert OrderNotSettled();
            settlementToStatus[orderHashes[i]] = SettlementStatus.FORWARDED;

            emit SettlementForwarded(orderHashes[i]);
        }

        bytes memory payload = abi.encode(orderHashes);

        if (provider == Provider.AXELAR) {
            gasService.payNativeGasForContractCall{value: msg.value}(
                address(this),
                hubChainName,
                hubAddress,
                payload,
                msg.sender
            );
            gateway.callContract(hubChainName, hubAddress, payload);
        } else if (provider == Provider.LAYERZERO) {
            bytes memory options = OptionsBuilder.newOptions().addExecutorLzReceiveOption(gasLimit, 0);
            _lzSend(
                hubEndpoint,
                payload,
                options,
                MessagingFee(msg.value, lzFee),
                payable(msg.sender)
            );
        } else {
            revert InvalidProvider();
        }
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                 Message passing endpoints                //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @notice Called by Axelar protocol when receiving a GMP on the destination chain from the Hub.
    /// Contains logic that will parse the payload and release tokens for eligible orders to the order.filler.
    /// @dev This method will only accept GMP's from the hubChain and hubAddress set within the Spoke.sol
    /// initializer at the time of contract deployment.
    /// @dev There are two options for FillType: SINGLE and MULTI
    /// SINGLE is used when a batch of orders only contains a single unique order.fromToken, and only requires
    /// a single transfer to release the tokens for the batch of orders to the order.filler.
    /// MULTI is used when a batch of orders contains multiple unique order.fromToken, and will use as many
    /// transfers as there are unique tokens in the batch.
    /// @param fromChain Chain name of the chain that sent the GMP according to Axelar's chain name format:
    /// https://docs.axelar.dev/dev/reference/mainnet-contract-addresses
    /// @param fromContractAddress Address that sent the GMP.
    /// @param payload Value provided by the Hub containing the aggregated data for the orders being processed.
    /// Expected format is: abi.encode(ICoral.FillType fillType, bytes32[] orderHashes, address filler,
    /// uint256[] fromAmounts, uint256[] fees, address[] fromTokens)
    function _execute(
        string calldata fromChain,
        string calldata fromContractAddress,
        bytes calldata payload
    ) internal virtual override onlyTrustedAddress(fromChain, fromContractAddress) {
        (
            FillType fillType,
            bytes32[] memory orderHashes,
            address filler,
            uint256[] memory fromAmounts,
            uint256[] memory processedFees,
            address[] memory fromTokens
        ) = abi.decode(
                payload,
                (FillType, bytes32[], address, uint256[], uint256[], address[])
            );

        if (fillType == FillType.SINGLE) {
            if (
                fromTokens.length != 1 || 
                fromAmounts.length != 1 ||
                processedFees.length != 1
            ) revert InvalidArrayLength();
            _releaseBatched(orderHashes, filler, fromAmounts[0], processedFees[0], fromTokens[0]);
        } else if (fillType == FillType.MULTI) {
            _releaseMultiTokenBatched(orderHashes, filler, fromAmounts, processedFees, fromTokens);
        } else {
            revert InvalidFillType();
        }
    }


    /// @notice Receives and processes a LayerZero message on the destination chain from the Hub.
    /// This function decodes the message payload and releases tokens for eligible orders to the order.filler.
    /// @dev This function will only accept messages originating from the hubEndpoint and hubAddressBytes32 
    /// that are configured during initialization.
    /// @dev Utilizes LayerZero's OApp standard for cross-chain messaging.
    /// @param _origin Struct containing the message's origin information, including the source chain's 
    /// Endpoint ID, the sender's address, and a message nonce.
    /// @param _guid A globally unique identifier for tracking the LayerZero message packet.
    /// @param payload The encoded message payload containing order details, formatted as:
    /// abi.encode(ICoral.FillType fillType, bytes32[] orderHashes, address filler,
    /// uint256[] fromAmounts, uint256[] fees, address[] fromTokens).
    /// @param _executor The address of the Executor contract that called EndpointV2's lzReceive function.
    /// This is primarily for auditing purposes and not utilized in logic.
    /// @param _extraData Additional arbitrary data appended by the Executor to accompany the message payload.
    /// It is not modified by the OApp and can include metadata or instructions for execution.
    function _lzReceive(
        Origin calldata _origin,
        bytes32 _guid,
        bytes calldata payload,
        address _executor,
        bytes calldata _extraData
    ) internal override {
        if (_origin.sender != hubAddressBytes32) revert UnauthorizedOriginAddress();
        if (_origin.srcEid != hubEndpoint) revert UnauthorizedOriginEndpoint();
        (
            FillType fillType,
            bytes32[] memory orderHashes,
            address filler,
            uint256[] memory fromAmounts,
            uint256[] memory processedFees,
            address[] memory fromTokens
        ) = abi.decode(
                payload,
                (FillType, bytes32[], address, uint256[], uint256[], address[])
            );

        if (fillType == FillType.SINGLE) {
            if (
                fromTokens.length != 1 || 
                fromAmounts.length != 1 ||
                processedFees.length != 1
            ) revert InvalidArrayLength();
            _releaseBatched(orderHashes, filler, fromAmounts[0], processedFees[0], fromTokens[0]);
        } else if (fillType == FillType.MULTI) {
            _releaseMultiTokenBatched(orderHashes, filler, fromAmounts, processedFees, fromTokens);
        } else {
            revert InvalidFillType();
        }
    }

    /// @notice Checks the OrderStatus of each order hash provided to ensure all orders are set to CREATED,
    /// set the OrderStatus of all order hashes to SETTLED, increments the fees for the provided token and 
    /// processedFees, and transfers the fromAmount of ERC20 or native token from the Spoke.sol contract 
    /// to the filler in a single transfer for all orders in the batch.
    /// @dev The provided order hashes are computed on the Hub based on orders that were processed and had
    /// a matching order hash that was processed on the order.toChain of the particular orders. Orders are
    /// eligible on the Hub to be forwarded to the order.fromChain once they've been filled on the
    /// order.toChain. Cross chain messages secured by Axelar protocol allow this function to receive
    /// confirmation that derived from the order.toChain Spoke.sol contract.
    /// @dev This method is called by the SINGLE FillType, therefore this will process orders for a single
    /// unique filler and token.
    /// @param orderHashes Array of keccak256 hashes of Orders being finalized.
    /// @param filler Address of the order.filler for all orders in the particular batch.
    /// @param fromAmount Amount of order.fromToken to be released to the filler.
    /// @param processedFees Amount of order.fromToken to be reserved as protocol fees.
    /// @param fromToken Address of the order.fromToken for all orders in the particular batch.
    function _releaseBatched(
        bytes32[] memory orderHashes,
        address filler,
        uint256 fromAmount,
        uint256 processedFees,
        address fromToken
    ) internal nonReentrant {
        if (orderHashes.length == 0) revert InvalidArrayLength();
    
        for (uint256 i = 0; i < orderHashes.length; i++) {
            bytes32 orderHash = orderHashes[i];
            if (orderHashToStatus[orderHash] != OrderStatus.CREATED) revert OrderStateNotCreated();
            orderHashToStatus[orderHash] = OrderStatus.SETTLED;

            emit TokensReleased(orderHash);
        }

        tokenToCollectedFees[fromToken] += processedFees;

        if (fromToken == Utils.NATIVE_TOKEN) {
            payable(filler).sendValue(fromAmount);
        } else {
            IERC20(fromToken).safeTransfer(filler, fromAmount);
        }
    }

    /// @notice Checks the OrderStatus of each order hash provided to ensure all orders are set to CREATED,
    /// set the OrderStatus of all order hashes to SETTLED, increments the fees for each unique token provided
    /// and the related processedFees according to the array position, and transfers the fromAmounts of native
    /// token or each unique ERC20 token from the Spoke.sol contract to the filler with a transfer for each
    /// unique token in the particular batch.
    /// @dev The provided order hashes are computed on the Hub based on orders that were processed and had
    /// a matching order hash that was processed on the order.toChain of the particular orders. Orders are
    /// eligible on the Hub to be forwarded to the order.fromChain once they've been filled on the
    /// order.toChain. Cross chain messages secured by Axelar protocol allow this function to receive
    /// confirmation that derived from the order.toChain Spoke.sol contract.
    /// @dev This method is called by the MULTI FillType, therefore this will process orders for all unique
    /// tokens in the particular batch and a single filler.
    /// @param orderHashes Array of keccak256 hashes of Orders being finalized.
    /// @param filler Address of the order.filler for all orders in the particular batch.
    /// @param fromAmounts Array of amounts of order.fromToken to be released to the filler.
    /// @param processedFees Array of amounts of order.fromToken to be reserved as protocol fees.
    /// @param fromTokens Array of addresses for all unique order.fromToken in a particular batch.
    function _releaseMultiTokenBatched(
        bytes32[] memory orderHashes,
        address filler,
        uint256[] memory fromAmounts,
        uint256[] memory processedFees,
        address[] memory fromTokens
    ) internal nonReentrant {
        if (
            orderHashes.length == 0 ||
            fromAmounts.length != fromTokens.length ||
            processedFees.length != fromTokens.length ||
            fromTokens.length < 2
        ) revert InvalidArrayLength();

        for (uint256 i = 0; i < orderHashes.length; i++) {
            bytes32 orderHash = orderHashes[i];
            if (orderHashToStatus[orderHash] != OrderStatus.CREATED) revert OrderStateNotCreated();
            orderHashToStatus[orderHash] = OrderStatus.SETTLED;

            emit TokensReleased(orderHash);
        }

        for (uint256 i = 0; i < fromTokens.length; i++) {
            tokenToCollectedFees[fromTokens[i]] += processedFees[i];

            if (fromTokens[i] == Utils.NATIVE_TOKEN) {
                payable(filler).sendValue(fromAmounts[i]);
            } else {
                IERC20(fromTokens[i]).safeTransfer(filler, fromAmounts[i]);
            }
        }
    }

    //////////////////////////////////////////////////////////////
    //                                                          //
    //                        Utilities                         //
    //                                                          //
    //////////////////////////////////////////////////////////////

    /// @notice Finds the index of a given token in an array of tokens.
    /// @param token Address of the token to find in the array.
    /// @param fromTokens Array of token addresses to search for the given token.
    /// @return uint256 Index of the token in the array, or the maximum value of uint256 if the token 
    /// is not found.
    function _findTokenIndex(
        address token,
        address[] calldata fromTokens
    ) private pure returns (uint256) {
        for (uint256 i = 0; i < fromTokens.length; i++) {
            if (fromTokens[i] == token) {
                return i;
            }
        }
        return type(uint256).max;
    }

    /// @notice Retrieves the current chain ID.
    /// @return uint256 The current chain ID.
    function _getChainId() private view returns (uint256) {
        uint256 chainId;
        assembly {
            chainId := chainid()
        }
        return chainId;
    }

    function addressToBytes32(address _addr) public pure returns (bytes32) {
        return bytes32(uint256(uint160(_addr)));
    }

    /// @notice Provides a gas fee estimate for sending a message to a specified destination chain
    /// through LayerZero.
    /// Computes fees required for executing a LayerZero cross-chain message considering the native and
    /// optional ZRO token fees.
    /// @param _dstEid Destination chain's Endpoint ID as specified by LayerZero documentation.
    /// @param orderHashes An array of order hashes to be encapsulated in the message payload for
    /// processing at the destination.
    /// @param gasLimit The gas limit to be used for executing the lzReceive function on the destination
    /// chain, affecting the fee.
    /// @param _payInLzToken A boolean indicating if part of the fee will be paid in LayerZero's ZRO
    /// token, impacting the fee structure.
    /// @return nativeFee The estimated fee in native tokens required for processing the message on
    /// the destination chain.
    /// @return lzTokenFee The estimated fee in ZRO tokens, if opted for payment through LayerZero's
    /// token mechanism.
    function quote(
        uint32 _dstEid,
        bytes32[] calldata orderHashes,
        uint128 gasLimit,
        bool _payInLzToken
    ) public view returns (uint256 nativeFee, uint256 lzTokenFee) {
        bytes memory payload = abi.encode(orderHashes);
        bytes memory options = OptionsBuilder.newOptions().addExecutorLzReceiveOption(gasLimit, 0);
        MessagingFee memory fee = _quote(_dstEid, payload, options, _payInLzToken);
        return (fee.nativeFee, fee.lzTokenFee);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { GasInfo } from '../types/GasEstimationTypes.sol';
import { IInterchainGasEstimation } from './IInterchainGasEstimation.sol';
import { IUpgradable } from './IUpgradable.sol';

/**
 * @title IAxelarGasService Interface
 * @notice This is an interface for the AxelarGasService contract which manages gas payments
 * and refunds for cross-chain communication on the Axelar network.
 * @dev This interface inherits IUpgradable
 */
interface IAxelarGasService is IInterchainGasEstimation, IUpgradable {
    error InvalidAddress();
    error NotCollector();
    error InvalidAmounts();
    error InvalidGasUpdates();
    error InvalidParams();
    error InsufficientGasPayment(uint256 required, uint256 provided);

    event GasPaidForContractCall(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event GasPaidForContractCallWithToken(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        string symbol,
        uint256 amount,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event NativeGasPaidForContractCall(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event NativeGasPaidForContractCallWithToken(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        string symbol,
        uint256 amount,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event GasPaidForExpressCall(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event GasPaidForExpressCallWithToken(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        string symbol,
        uint256 amount,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event NativeGasPaidForExpressCall(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event NativeGasPaidForExpressCallWithToken(
        address indexed sourceAddress,
        string destinationChain,
        string destinationAddress,
        bytes32 indexed payloadHash,
        string symbol,
        uint256 amount,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event GasAdded(
        bytes32 indexed txHash,
        uint256 indexed logIndex,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event NativeGasAdded(bytes32 indexed txHash, uint256 indexed logIndex, uint256 gasFeeAmount, address refundAddress);

    event ExpressGasAdded(
        bytes32 indexed txHash,
        uint256 indexed logIndex,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event NativeExpressGasAdded(
        bytes32 indexed txHash,
        uint256 indexed logIndex,
        uint256 gasFeeAmount,
        address refundAddress
    );

    event Refunded(
        bytes32 indexed txHash,
        uint256 indexed logIndex,
        address payable receiver,
        address token,
        uint256 amount
    );

    /**
     * @notice Pay for gas for any type of contract execution on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @dev If estimateOnChain is true, the function will estimate the gas cost and revert if the payment is insufficient.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call
     * @param executionGasLimit The gas limit for the contract call
     * @param estimateOnChain Flag to enable on-chain gas estimation
     * @param refundAddress The address where refunds, if any, should be sent
     * @param params Additional parameters for gas payment. This can be left empty for normal contract call payments.
     */
    function payGas(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        uint256 executionGasLimit,
        bool estimateOnChain,
        address refundAddress,
        bytes calldata params
    ) external payable;

    /**
     * @notice Pay for gas using ERC20 tokens for a contract call on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call
     * @param gasToken The address of the ERC20 token used to pay for gas
     * @param gasFeeAmount The amount of tokens to pay for gas
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payGasForContractCall(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    ) external;

    /**
     * @notice Pay for gas using ERC20 tokens for a contract call with tokens on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call with tokens will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call with tokens
     * @param symbol The symbol of the token to be sent with the call
     * @param amount The amount of tokens to be sent with the call
     * @param gasToken The address of the ERC20 token used to pay for gas
     * @param gasFeeAmount The amount of tokens to pay for gas
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payGasForContractCallWithToken(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        string calldata symbol,
        uint256 amount,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    ) external;

    /**
     * @notice Pay for gas using native currency for a contract call on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payNativeGasForContractCall(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        address refundAddress
    ) external payable;

    /**
     * @notice Pay for gas using native currency for a contract call with tokens on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call with tokens will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call with tokens
     * @param symbol The symbol of the token to be sent with the call
     * @param amount The amount of tokens to be sent with the call
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payNativeGasForContractCallWithToken(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        string calldata symbol,
        uint256 amount,
        address refundAddress
    ) external payable;

    /**
     * @notice Pay for gas using ERC20 tokens for an express contract call on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to express execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call
     * @param gasToken The address of the ERC20 token used to pay for gas
     * @param gasFeeAmount The amount of tokens to pay for gas
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payGasForExpressCall(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    ) external;

    /**
     * @notice Pay for gas using ERC20 tokens for an express contract call with tokens on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to express execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call with tokens will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call with tokens
     * @param symbol The symbol of the token to be sent with the call
     * @param amount The amount of tokens to be sent with the call
     * @param gasToken The address of the ERC20 token used to pay for gas
     * @param gasFeeAmount The amount of tokens to pay for gas
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payGasForExpressCallWithToken(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        string calldata symbol,
        uint256 amount,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    ) external;

    /**
     * @notice Pay for gas using native currency for an express contract call on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payNativeGasForExpressCall(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        address refundAddress
    ) external payable;

    /**
     * @notice Pay for gas using native currency for an express contract call with tokens on a destination chain.
     * @dev This function is called on the source chain before calling the gateway to execute a remote contract.
     * @param sender The address making the payment
     * @param destinationChain The target chain where the contract call with tokens will be made
     * @param destinationAddress The target address on the destination chain
     * @param payload Data payload for the contract call with tokens
     * @param symbol The symbol of the token to be sent with the call
     * @param amount The amount of tokens to be sent with the call
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function payNativeGasForExpressCallWithToken(
        address sender,
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        string calldata symbol,
        uint256 amount,
        address refundAddress
    ) external payable;

    /**
     * @notice Add additional gas payment using ERC20 tokens after initiating a cross-chain call.
     * @dev This function can be called on the source chain after calling the gateway to execute a remote contract.
     * @param txHash The transaction hash of the cross-chain call
     * @param logIndex The log index for the cross-chain call
     * @param gasToken The ERC20 token address used to add gas
     * @param gasFeeAmount The amount of tokens to add as gas
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function addGas(
        bytes32 txHash,
        uint256 logIndex,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    ) external;

    /**
     * @notice Add additional gas payment using native currency after initiating a cross-chain call.
     * @dev This function can be called on the source chain after calling the gateway to execute a remote contract.
     * @param txHash The transaction hash of the cross-chain call
     * @param logIndex The log index for the cross-chain call
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function addNativeGas(
        bytes32 txHash,
        uint256 logIndex,
        address refundAddress
    ) external payable;

    /**
     * @notice Add additional gas payment using ERC20 tokens after initiating an express cross-chain call.
     * @dev This function can be called on the source chain after calling the gateway to express execute a remote contract.
     * @param txHash The transaction hash of the cross-chain call
     * @param logIndex The log index for the cross-chain call
     * @param gasToken The ERC20 token address used to add gas
     * @param gasFeeAmount The amount of tokens to add as gas
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function addExpressGas(
        bytes32 txHash,
        uint256 logIndex,
        address gasToken,
        uint256 gasFeeAmount,
        address refundAddress
    ) external;

    /**
     * @notice Add additional gas payment using native currency after initiating an express cross-chain call.
     * @dev This function can be called on the source chain after calling the gateway to express execute a remote contract.
     * @param txHash The transaction hash of the cross-chain call
     * @param logIndex The log index for the cross-chain call
     * @param refundAddress The address where refunds, if any, should be sent
     */
    function addNativeExpressGas(
        bytes32 txHash,
        uint256 logIndex,
        address refundAddress
    ) external payable;

    /**
     * @notice Updates the gas price for a specific chain.
     * @dev This function is called by the gas oracle to update the gas prices for a specific chains.
     * @param chains Array of chain names
     * @param gasUpdates Array of gas updates
     */
    function updateGasInfo(string[] calldata chains, GasInfo[] calldata gasUpdates) external;

    /**
     * @notice Allows the gasCollector to collect accumulated fees from the contract.
     * @dev Use address(0) as the token address for native currency.
     * @param receiver The address to receive the collected fees
     * @param tokens Array of token addresses to be collected
     * @param amounts Array of amounts to be collected for each respective token address
     */
    function collectFees(
        address payable receiver,
        address[] calldata tokens,
        uint256[] calldata amounts
    ) external;

    /**
     * @notice Refunds gas payment to the receiver in relation to a specific cross-chain transaction.
     * @dev Only callable by the gasCollector.
     * @dev Use address(0) as the token address to refund native currency.
     * @param txHash The transaction hash of the cross-chain call
     * @param logIndex The log index for the cross-chain call
     * @param receiver The address to receive the refund
     * @param token The token address to be refunded
     * @param amount The amount to refund
     */
    function refund(
        bytes32 txHash,
        uint256 logIndex,
        address payable receiver,
        address token,
        uint256 amount
    ) external;

    /**
     * @notice Returns the address of the designated gas collector.
     * @return address of the gas collector
     */
    function gasCollector() external returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// General interface for upgradable contracts
interface IContractIdentifier {
    /**
     * @notice Returns the contract ID. It can be used as a check during upgrades.
     * @dev Meant to be overridden in derived contracts.
     * @return bytes32 The contract ID
     */
    function contractId() external pure returns (bytes32);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IContractIdentifier } from './IContractIdentifier.sol';

interface IImplementation is IContractIdentifier {
    error NotProxy();

    function setup(bytes calldata data) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IInterchainAddressTracker
 * @dev Manages trusted addresses by chain, keeps track of addresses supported by the Axelar gateway contract
 */
interface IInterchainAddressTracker {
    error ZeroAddress();
    error LengthMismatch();
    error ZeroStringLength();
    error UntrustedChain();

    event TrustedAddressSet(string chain, string address_);
    event TrustedAddressRemoved(string chain);

    /**
     * @dev Gets the name of the chain this is deployed at
     */
    function chainName() external view returns (string memory);

    /**
     * @dev Gets the trusted address at a remote chain
     * @param chain Chain name of the remote chain
     * @return trustedAddress_ The trusted address for the chain. Returns '' if the chain is untrusted
     */
    function trustedAddress(string memory chain) external view returns (string memory trustedAddress_);

    /**
     * @dev Gets the trusted address hash for a chain
     * @param chain Chain name
     * @return trustedAddressHash_ the hash of the trusted address for that chain
     */
    function trustedAddressHash(string memory chain) external view returns (bytes32 trustedAddressHash_);

    /**
     * @dev Checks whether the interchain sender is a trusted address
     * @param chain Chain name of the sender
     * @param address_ Address of the sender
     * @return bool true if the sender chain/address are trusted, false otherwise
     */
    function isTrustedAddress(string calldata chain, string calldata address_) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { GasEstimationType, GasInfo } from '../types/GasEstimationTypes.sol';

/**
 * @title IInterchainGasEstimation Interface
 * @notice This is an interface for the InterchainGasEstimation contract
 * which allows for estimating gas fees for cross-chain communication on the Axelar network.
 */
interface IInterchainGasEstimation {
    error UnsupportedEstimationType(GasEstimationType gasEstimationType);

    /**
     * @notice Event emitted when the gas price for a specific chain is updated.
     * @param chain The name of the chain
     * @param info The gas info for the chain
     */
    event GasInfoUpdated(string chain, GasInfo info);

    /**
     * @notice Returns the gas price for a specific chain.
     * @param chain The name of the chain
     * @return gasInfo The gas info for the chain
     */
    function getGasInfo(string calldata chain) external view returns (GasInfo memory);

    /**
     * @notice Estimates the gas fee for a cross-chain contract call.
     * @param destinationChain Axelar registered name of the destination chain
     * @param destinationAddress Destination contract address being called
     * @param executionGasLimit The gas limit to be used for the destination contract execution,
     *        e.g. pass in 200k if your app consumes needs upto 200k for this contract call
     * @param params Additional parameters for the gas estimation
     * @return gasEstimate The cross-chain gas estimate, in terms of source chain's native gas token that should be forwarded to the gas service.
     */
    function estimateGasFee(
        string calldata destinationChain,
        string calldata destinationAddress,
        bytes calldata payload,
        uint256 executionGasLimit,
        bytes calldata params
    ) external view returns (uint256 gasEstimate);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IOwnable Interface
 * @notice IOwnable is an interface that abstracts the implementation of a
 * contract with ownership control features. It's commonly used in upgradable
 * contracts and includes the functionality to get current owner, transfer
 * ownership, and propose and accept ownership.
 */
interface IOwnable {
    error NotOwner();
    error InvalidOwner();
    error InvalidOwnerAddress();

    event OwnershipTransferStarted(address indexed newOwner);
    event OwnershipTransferred(address indexed newOwner);

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

    /**
     * @notice Returns the address of the pending owner of the contract.
     * @return address The address of the pending owner
     */
    function pendingOwner() external view returns (address);

    /**
     * @notice Transfers ownership of the contract to a new address
     * @param newOwner The address to transfer ownership to
     */
    function transferOwnership(address newOwner) external;

    /**
     * @notice Proposes to transfer the contract's ownership to a new address.
     * The new owner needs to accept the ownership explicitly.
     * @param newOwner The address to transfer ownership to
     */
    function proposeOwnership(address newOwner) external;

    /**
     * @notice Transfers ownership to the pending owner.
     * @dev Can only be called by the pending owner
     */
    function acceptOwnership() external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IOwnable } from './IOwnable.sol';
import { IImplementation } from './IImplementation.sol';

// General interface for upgradable contracts
interface IUpgradable is IOwnable, IImplementation {
    error InvalidCodeHash();
    error InvalidImplementation();
    error SetupFailed();

    event Upgraded(address indexed newImplementation);

    function implementation() external view returns (address);

    function upgrade(
        address newImplementation,
        bytes32 newImplementationCodeHash,
        bytes calldata params
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library StringStorage {
    struct Wrapper {
        string value;
    }

    function set(bytes32 slot, string memory value) internal {
        _getStorageStruct(slot).value = value;
    }

    function get(bytes32 slot) internal view returns (string memory value) {
        value = _getStorageStruct(slot).value;
    }

    function clear(bytes32 slot) internal {
        delete _getStorageStruct(slot).value;
    }

    function _getStorageStruct(bytes32 slot) internal pure returns (Wrapper storage wrapper) {
        assembly {
            wrapper.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title GasEstimationType
 * @notice This enum represents the gas estimation types for different chains.
 */
enum GasEstimationType {
    Default,
    OptimismEcotone,
    OptimismBedrock,
    Arbitrum,
    Scroll
}

/**
 * @title GasInfo
 * @notice This struct represents the gas pricing information for a specific chain.
 * @dev Smaller uint types are used for efficient struct packing to save storage costs.
 */
struct GasInfo {
    /// @dev Custom gas pricing rule, such as L1 data fee on L2s
    uint64 gasEstimationType;
    /// @dev Scalar value needed for specific gas estimation types, expected to be less than 1e10
    uint64 l1FeeScalar;
    /// @dev Axelar base fee for cross-chain message approval on destination, in terms of source native gas token
    uint128 axelarBaseFee;
    /// @dev Gas price of destination chain, in terms of the source chain token, i.e dest_gas_price * dest_token_market_price / src_token_market_price
    uint128 relativeGasPrice;
    /// @dev Needed for specific gas estimation types. Blob base fee of destination chain, in terms of the source chain token, i.e dest_blob_base_fee * dest_token_market_price / src_token_market_price
    uint128 relativeBlobBaseFee;
    /// @dev Axelar express fee for express execution, in terms of source chain token
    uint128 expressFee;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IInterchainAddressTracker } from '../interfaces/IInterchainAddressTracker.sol';
import { StringStorage } from '../libs/StringStorage.sol';

/**
 * @title InterchainAddressTracker
 * @dev Manages and validates trusted interchain addresses of an application.
 */
contract InterchainAddressTracker is IInterchainAddressTracker {
    bytes32 internal constant PREFIX_ADDRESS_MAPPING = keccak256('interchain-address-tracker-address-mapping');
    bytes32 internal constant PREFIX_ADDRESS_HASH_MAPPING =
        keccak256('interchain-address-tracker-address-hash-mapping');
    // bytes32(uint256(keccak256('interchain-address-tracker-chain-name')) - 1)
    bytes32 internal constant _CHAIN_NAME_SLOT = 0x0e2c162a1f4b5cff9fdbd6b34678a9bcb9898a0b9fbca695b112d61688d8b2ac;

    function _setChainName(string memory chainName_) internal {
        StringStorage.set(_CHAIN_NAME_SLOT, chainName_);
    }

    /**
     * @dev Gets the name of the chain this is deployed at
     */
    function chainName() external view returns (string memory chainName_) {
        chainName_ = StringStorage.get(_CHAIN_NAME_SLOT);
    }

    /**
     * @dev Gets the trusted address at a remote chain
     * @param chain Chain name of the remote chain
     * @return trustedAddress_ The trusted address for the chain. Returns '' if the chain is untrusted
     */
    function trustedAddress(string memory chain) public view returns (string memory trustedAddress_) {
        trustedAddress_ = StringStorage.get(_getTrustedAddressSlot(chain));
    }

    /**
     * @dev Gets the trusted address hash for a chain
     * @param chain Chain name
     * @return trustedAddressHash_ the hash of the trusted address for that chain
     */
    function trustedAddressHash(string memory chain) public view returns (bytes32 trustedAddressHash_) {
        bytes32 slot = _getTrustedAddressHashSlot(chain);
        assembly {
            trustedAddressHash_ := sload(slot)
        }
    }

    /**
     * @dev Checks whether the interchain sender is a trusted address
     * @param chain Chain name of the sender
     * @param address_ Address of the sender
     * @return bool true if the sender chain/address are trusted, false otherwise
     */
    function isTrustedAddress(string calldata chain, string calldata address_) public view returns (bool) {
        bytes32 addressHash = keccak256(bytes(address_));

        return addressHash == trustedAddressHash(chain);
    }

    /**
     * @dev Gets the key for the trusted address at a remote chain
     * @param chain Chain name of the remote chain
     * @return slot the slot to store the trusted address in
     */
    function _getTrustedAddressSlot(string memory chain) internal pure returns (bytes32 slot) {
        slot = keccak256(abi.encode(PREFIX_ADDRESS_MAPPING, chain));
    }

    /**
     * @dev Gets the key for the trusted address at a remote chain
     * @param chain Chain name of the remote chain
     * @return slot the slot to store the trusted address hash in
     */
    function _getTrustedAddressHashSlot(string memory chain) internal pure returns (bytes32 slot) {
        slot = keccak256(abi.encode(PREFIX_ADDRESS_HASH_MAPPING, chain));
    }

    /**
     * @dev Sets the trusted address and its hash for a remote chain
     * @param chain Chain name of the remote chain
     * @param address_ the string representation of the trusted address
     */
    function _setTrustedAddress(string memory chain, string memory address_) internal {
        if (bytes(chain).length == 0) revert ZeroStringLength();
        if (bytes(address_).length == 0) revert ZeroStringLength();

        StringStorage.set(_getTrustedAddressSlot(chain), address_);

        bytes32 slot = _getTrustedAddressHashSlot(chain);
        bytes32 addressHash = keccak256(bytes(address_));
        assembly {
            sstore(slot, addressHash)
        }

        emit TrustedAddressSet(chain, address_);
    }

    /**
     * @dev Remove the trusted address of the chain.
     * @param chain Chain name that should be made untrusted
     */
    function _removeTrustedAddress(string memory chain) internal {
        if (bytes(chain).length == 0) revert ZeroStringLength();

        StringStorage.clear(_getTrustedAddressSlot(chain));

        bytes32 slot = _getTrustedAddressHashSlot(chain);
        assembly {
            sstore(slot, 0)
        }

        emit TrustedAddressRemoved(chain);
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

import "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/CalldataBytesLib.sol";

library ExecutorOptions {
    using CalldataBytesLib for bytes;

    uint8 internal constant WORKER_ID = 1;

    uint8 internal constant OPTION_TYPE_LZRECEIVE = 1;
    uint8 internal constant OPTION_TYPE_NATIVE_DROP = 2;
    uint8 internal constant OPTION_TYPE_LZCOMPOSE = 3;
    uint8 internal constant OPTION_TYPE_ORDERED_EXECUTION = 4;
    uint8 internal constant OPTION_TYPE_LZREAD = 5;

    error Executor_InvalidLzReceiveOption();
    error Executor_InvalidNativeDropOption();
    error Executor_InvalidLzComposeOption();
    error Executor_InvalidLzReadOption();

    /// @dev decode the next executor option from the options starting from the specified cursor
    /// @param _options [executor_id][executor_option][executor_id][executor_option]...
    ///        executor_option = [option_size][option_type][option]
    ///        option_size = len(option_type) + len(option)
    ///        executor_id: uint8, option_size: uint16, option_type: uint8, option: bytes
    /// @param _cursor the cursor to start decoding from
    /// @return optionType the type of the option
    /// @return option the option of the executor
    /// @return cursor the cursor to start decoding the next executor option
    function nextExecutorOption(
        bytes calldata _options,
        uint256 _cursor
    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {
        unchecked {
            // skip worker id
            cursor = _cursor + 1;

            // read option size
            uint16 size = _options.toU16(cursor);
            cursor += 2;

            // read option type
            optionType = _options.toU8(cursor);

            // startCursor and endCursor are used to slice the option from _options
            uint256 startCursor = cursor + 1; // skip option type
            uint256 endCursor = cursor + size;
            option = _options[startCursor:endCursor];
            cursor += size;
        }
    }

    function decodeLzReceiveOption(bytes calldata _option) internal pure returns (uint128 gas, uint128 value) {
        if (_option.length != 16 && _option.length != 32) revert Executor_InvalidLzReceiveOption();
        gas = _option.toU128(0);
        value = _option.length == 32 ? _option.toU128(16) : 0;
    }

    function decodeNativeDropOption(bytes calldata _option) internal pure returns (uint128 amount, bytes32 receiver) {
        if (_option.length != 48) revert Executor_InvalidNativeDropOption();
        amount = _option.toU128(0);
        receiver = _option.toB32(16);
    }

    function decodeLzComposeOption(
        bytes calldata _option
    ) internal pure returns (uint16 index, uint128 gas, uint128 value) {
        if (_option.length != 18 && _option.length != 34) revert Executor_InvalidLzComposeOption();
        index = _option.toU16(0);
        gas = _option.toU128(2);
        value = _option.length == 34 ? _option.toU128(18) : 0;
    }

    function decodeLzReadOption(
        bytes calldata _option
    ) internal pure returns (uint128 gas, uint32 calldataSize, uint128 value) {
        if (_option.length != 20 && _option.length != 36) revert Executor_InvalidLzReadOption();
        gas = _option.toU128(0);
        calldataSize = _option.toU32(16);
        value = _option.length == 36 ? _option.toU128(20) : 0;
    }

    function encodeLzReceiveOption(uint128 _gas, uint128 _value) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_gas) : abi.encodePacked(_gas, _value);
    }

    function encodeNativeDropOption(uint128 _amount, bytes32 _receiver) internal pure returns (bytes memory) {
        return abi.encodePacked(_amount, _receiver);
    }

    function encodeLzComposeOption(uint16 _index, uint128 _gas, uint128 _value) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_index, _gas) : abi.encodePacked(_index, _gas, _value);
    }

    function encodeLzReadOption(
        uint128 _gas,
        uint32 _calldataSize,
        uint128 _value
    ) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_gas, _calldataSize) : abi.encodePacked(_gas, _calldataSize, _value);
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

import { BytesLib } from "solidity-bytes-utils/contracts/BytesLib.sol";

import { BitMap256 } from "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/BitMaps.sol";
import { CalldataBytesLib } from "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/CalldataBytesLib.sol";

library DVNOptions {
    using CalldataBytesLib for bytes;
    using BytesLib for bytes;

    uint8 internal constant WORKER_ID = 2;
    uint8 internal constant OPTION_TYPE_PRECRIME = 1;

    error DVN_InvalidDVNIdx();
    error DVN_InvalidDVNOptions(uint256 cursor);

    /// @dev group dvn options by its idx
    /// @param _options [dvn_id][dvn_option][dvn_id][dvn_option]...
    ///        dvn_option = [option_size][dvn_idx][option_type][option]
    ///        option_size = len(dvn_idx) + len(option_type) + len(option)
    ///        dvn_id: uint8, dvn_idx: uint8, option_size: uint16, option_type: uint8, option: bytes
    /// @return dvnOptions the grouped options, still share the same format of _options
    /// @return dvnIndices the dvn indices
    function groupDVNOptionsByIdx(
        bytes memory _options
    ) internal pure returns (bytes[] memory dvnOptions, uint8[] memory dvnIndices) {
        if (_options.length == 0) return (dvnOptions, dvnIndices);

        uint8 numDVNs = getNumDVNs(_options);

        // if there is only 1 dvn, we can just return the whole options
        if (numDVNs == 1) {
            dvnOptions = new bytes[](1);
            dvnOptions[0] = _options;

            dvnIndices = new uint8[](1);
            dvnIndices[0] = _options.toUint8(3); // dvn idx
            return (dvnOptions, dvnIndices);
        }

        // otherwise, we need to group the options by dvn_idx
        dvnIndices = new uint8[](numDVNs);
        dvnOptions = new bytes[](numDVNs);
        unchecked {
            uint256 cursor = 0;
            uint256 start = 0;
            uint8 lastDVNIdx = 255; // 255 is an invalid dvn_idx

            while (cursor < _options.length) {
                ++cursor; // skip worker_id

                // optionLength asserted in getNumDVNs (skip check)
                uint16 optionLength = _options.toUint16(cursor);
                cursor += 2;

                // dvnIdx asserted in getNumDVNs (skip check)
                uint8 dvnIdx = _options.toUint8(cursor);

                // dvnIdx must equal to the lastDVNIdx for the first option
                // so it is always skipped in the first option
                // this operation slices out options whenever the scan finds a different lastDVNIdx
                if (lastDVNIdx == 255) {
                    lastDVNIdx = dvnIdx;
                } else if (dvnIdx != lastDVNIdx) {
                    uint256 len = cursor - start - 3; // 3 is for worker_id and option_length
                    bytes memory opt = _options.slice(start, len);
                    _insertDVNOptions(dvnOptions, dvnIndices, lastDVNIdx, opt);

                    // reset the start and lastDVNIdx
                    start += len;
                    lastDVNIdx = dvnIdx;
                }

                cursor += optionLength;
            }

            // skip check the cursor here because the cursor is asserted in getNumDVNs
            // if we have reached the end of the options, we need to process the last dvn
            uint256 size = cursor - start;
            bytes memory op = _options.slice(start, size);
            _insertDVNOptions(dvnOptions, dvnIndices, lastDVNIdx, op);

            // revert dvnIndices to start from 0
            for (uint8 i = 0; i < numDVNs; ++i) {
                --dvnIndices[i];
            }
        }
    }

    function _insertDVNOptions(
        bytes[] memory _dvnOptions,
        uint8[] memory _dvnIndices,
        uint8 _dvnIdx,
        bytes memory _newOptions
    ) internal pure {
        // dvnIdx starts from 0 but default value of dvnIndices is 0,
        // so we tell if the slot is empty by adding 1 to dvnIdx
        if (_dvnIdx == 255) revert DVN_InvalidDVNIdx();
        uint8 dvnIdxAdj = _dvnIdx + 1;

        for (uint256 j = 0; j < _dvnIndices.length; ++j) {
            uint8 index = _dvnIndices[j];
            if (dvnIdxAdj == index) {
                _dvnOptions[j] = abi.encodePacked(_dvnOptions[j], _newOptions);
                break;
            } else if (index == 0) {
                // empty slot, that means it is the first time we see this dvn
                _dvnIndices[j] = dvnIdxAdj;
                _dvnOptions[j] = _newOptions;
                break;
            }
        }
    }

    /// @dev get the number of unique dvns
    /// @param _options the format is the same as groupDVNOptionsByIdx
    function getNumDVNs(bytes memory _options) internal pure returns (uint8 numDVNs) {
        uint256 cursor = 0;
        BitMap256 bitmap;

        // find number of unique dvn_idx
        unchecked {
            while (cursor < _options.length) {
                ++cursor; // skip worker_id

                uint16 optionLength = _options.toUint16(cursor);
                cursor += 2;
                if (optionLength < 2) revert DVN_InvalidDVNOptions(cursor); // at least 1 byte for dvn_idx and 1 byte for option_type

                uint8 dvnIdx = _options.toUint8(cursor);

                // if dvnIdx is not set, increment numDVNs
                // max num of dvns is 255, 255 is an invalid dvn_idx
                // The order of the dvnIdx is not required to be sequential, as enforcing the order may weaken
                // the composability of the options. e.g. if we refrain from enforcing the order, an OApp that has
                // already enforced certain options can append additional options to the end of the enforced
                // ones without restrictions.
                if (dvnIdx == 255) revert DVN_InvalidDVNIdx();
                if (!bitmap.get(dvnIdx)) {
                    ++numDVNs;
                    bitmap = bitmap.set(dvnIdx);
                }

                cursor += optionLength;
            }
        }
        if (cursor != _options.length) revert DVN_InvalidDVNOptions(cursor);
    }

    /// @dev decode the next dvn option from _options starting from the specified cursor
    /// @param _options the format is the same as groupDVNOptionsByIdx
    /// @param _cursor the cursor to start decoding
    /// @return optionType the type of the option
    /// @return option the option
    /// @return cursor the cursor to start decoding the next option
    function nextDVNOption(
        bytes calldata _options,
        uint256 _cursor
    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {
        unchecked {
            // skip worker id
            cursor = _cursor + 1;

            // read option size
            uint16 size = _options.toU16(cursor);
            cursor += 2;

            // read option type
            optionType = _options.toU8(cursor + 1); // skip dvn_idx

            // startCursor and endCursor are used to slice the option from _options
            uint256 startCursor = cursor + 2; // skip option type and dvn_idx
            uint256 endCursor = cursor + size;
            option = _options[startCursor:endCursor];
            cursor += size;
        }
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

library CalldataBytesLib {
    function toU8(bytes calldata _bytes, uint256 _start) internal pure returns (uint8) {
        return uint8(_bytes[_start]);
    }

    function toU16(bytes calldata _bytes, uint256 _start) internal pure returns (uint16) {
        unchecked {
            uint256 end = _start + 2;
            return uint16(bytes2(_bytes[_start:end]));
        }
    }

    function toU32(bytes calldata _bytes, uint256 _start) internal pure returns (uint32) {
        unchecked {
            uint256 end = _start + 4;
            return uint32(bytes4(_bytes[_start:end]));
        }
    }

    function toU64(bytes calldata _bytes, uint256 _start) internal pure returns (uint64) {
        unchecked {
            uint256 end = _start + 8;
            return uint64(bytes8(_bytes[_start:end]));
        }
    }

    function toU128(bytes calldata _bytes, uint256 _start) internal pure returns (uint128) {
        unchecked {
            uint256 end = _start + 16;
            return uint128(bytes16(_bytes[_start:end]));
        }
    }

    function toU256(bytes calldata _bytes, uint256 _start) internal pure returns (uint256) {
        unchecked {
            uint256 end = _start + 32;
            return uint256(bytes32(_bytes[_start:end]));
        }
    }

    function toAddr(bytes calldata _bytes, uint256 _start) internal pure returns (address) {
        unchecked {
            uint256 end = _start + 20;
            return address(bytes20(_bytes[_start:end]));
        }
    }

    function toB32(bytes calldata _bytes, uint256 _start) internal pure returns (bytes32) {
        unchecked {
            uint256 end = _start + 32;
            return bytes32(_bytes[_start:end]);
        }
    }
}

// SPDX-License-Identifier: MIT

// modified from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/structs/BitMaps.sol
pragma solidity ^0.8.20;

type BitMap256 is uint256;

using BitMaps for BitMap256 global;

library BitMaps {
    /**
     * @dev Returns whether the bit at `index` is set.
     */
    function get(BitMap256 bitmap, uint8 index) internal pure returns (bool) {
        uint256 mask = 1 << index;
        return BitMap256.unwrap(bitmap) & mask != 0;
    }

    /**
     * @dev Sets the bit at `index`.
     */
    function set(BitMap256 bitmap, uint8 index) internal pure returns (BitMap256) {
        uint256 mask = 1 << index;
        return BitMap256.wrap(BitMap256.unwrap(bitmap) | mask);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { BytesLib } from "solidity-bytes-utils/contracts/BytesLib.sol";
import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol";

import { ExecutorOptions } from "@layerzerolabs/lz-evm-messagelib-v2/contracts/libs/ExecutorOptions.sol";
import { DVNOptions } from "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/libs/DVNOptions.sol";

/**
 * @title OptionsBuilder
 * @dev Library for building and encoding various message options.
 */
library OptionsBuilder {
    using SafeCast for uint256;
    using BytesLib for bytes;

    // Constants for options types
    uint16 internal constant TYPE_1 = 1; // legacy options type 1
    uint16 internal constant TYPE_2 = 2; // legacy options type 2
    uint16 internal constant TYPE_3 = 3;

    // Custom error message
    error InvalidSize(uint256 max, uint256 actual);
    error InvalidOptionType(uint16 optionType);

    // Modifier to ensure only options of type 3 are used
    modifier onlyType3(bytes memory _options) {
        if (_options.toUint16(0) != TYPE_3) revert InvalidOptionType(_options.toUint16(0));
        _;
    }

    /**
     * @dev Creates a new options container with type 3.
     * @return options The newly created options container.
     */
    function newOptions() internal pure returns (bytes memory) {
        return abi.encodePacked(TYPE_3);
    }

    /**
     * @dev Adds an executor LZ receive option to the existing options.
     * @param _options The existing options container.
     * @param _gas The gasLimit used on the lzReceive() function in the OApp.
     * @param _value The msg.value passed to the lzReceive() function in the OApp.
     * @return options The updated options container.
     *
     * @dev When multiples of this option are added, they are summed by the executor
     * eg. if (_gas: 200k, and _value: 1 ether) AND (_gas: 100k, _value: 0.5 ether) are sent in an option to the LayerZeroEndpoint,
     * that becomes (300k, 1.5 ether) when the message is executed on the remote lzReceive() function.
     */
    function addExecutorLzReceiveOption(
        bytes memory _options,
        uint128 _gas,
        uint128 _value
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeLzReceiveOption(_gas, _value);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_LZRECEIVE, option);
    }

    /**
     * @dev Adds an executor native drop option to the existing options.
     * @param _options The existing options container.
     * @param _amount The amount for the native value that is airdropped to the 'receiver'.
     * @param _receiver The receiver address for the native drop option.
     * @return options The updated options container.
     *
     * @dev When multiples of this option are added, they are summed by the executor on the remote chain.
     */
    function addExecutorNativeDropOption(
        bytes memory _options,
        uint128 _amount,
        bytes32 _receiver
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeNativeDropOption(_amount, _receiver);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_NATIVE_DROP, option);
    }

    // /**
    //  * @dev Adds an executor native drop option to the existing options.
    //  * @param _options The existing options container.
    //  * @param _amount The amount for the native value that is airdropped to the 'receiver'.
    //  * @param _receiver The receiver address for the native drop option.
    //  * @return options The updated options container.
    //  *
    //  * @dev When multiples of this option are added, they are summed by the executor on the remote chain.
    //  */
    function addExecutorLzReadOption(
        bytes memory _options,
        uint128 _gas,
        uint32 _size,
        uint128 _value
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeLzReadOption(_gas, _size, _value);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_LZREAD, option);
    }

    /**
     * @dev Adds an executor LZ compose option to the existing options.
     * @param _options The existing options container.
     * @param _index The index for the lzCompose() function call.
     * @param _gas The gasLimit for the lzCompose() function call.
     * @param _value The msg.value for the lzCompose() function call.
     * @return options The updated options container.
     *
     * @dev When multiples of this option are added, they are summed PER index by the executor on the remote chain.
     * @dev If the OApp sends N lzCompose calls on the remote, you must provide N incremented indexes starting with 0.
     * ie. When your remote OApp composes (N = 3) messages, you must set this option for index 0,1,2
     */
    function addExecutorLzComposeOption(
        bytes memory _options,
        uint16 _index,
        uint128 _gas,
        uint128 _value
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeLzComposeOption(_index, _gas, _value);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_LZCOMPOSE, option);
    }

    /**
     * @dev Adds an executor ordered execution option to the existing options.
     * @param _options The existing options container.
     * @return options The updated options container.
     */
    function addExecutorOrderedExecutionOption(
        bytes memory _options
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_ORDERED_EXECUTION, bytes(""));
    }

    /**
     * @dev Adds a DVN pre-crime option to the existing options.
     * @param _options The existing options container.
     * @param _dvnIdx The DVN index for the pre-crime option.
     * @return options The updated options container.
     */
    function addDVNPreCrimeOption(
        bytes memory _options,
        uint8 _dvnIdx
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return addDVNOption(_options, _dvnIdx, DVNOptions.OPTION_TYPE_PRECRIME, bytes(""));
    }

    /**
     * @dev Adds an executor option to the existing options.
     * @param _options The existing options container.
     * @param _optionType The type of the executor option.
     * @param _option The encoded data for the executor option.
     * @return options The updated options container.
     */
    function addExecutorOption(
        bytes memory _options,
        uint8 _optionType,
        bytes memory _option
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return
            abi.encodePacked(
                _options,
                ExecutorOptions.WORKER_ID,
                _option.length.toUint16() + 1, // +1 for optionType
                _optionType,
                _option
            );
    }

    /**
     * @dev Adds a DVN option to the existing options.
     * @param _options The existing options container.
     * @param _dvnIdx The DVN index for the DVN option.
     * @param _optionType The type of the DVN option.
     * @param _option The encoded data for the DVN option.
     * @return options The updated options container.
     */
    function addDVNOption(
        bytes memory _options,
        uint8 _dvnIdx,
        uint8 _optionType,
        bytes memory _option
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return
            abi.encodePacked(
                _options,
                DVNOptions.WORKER_ID,
                _option.length.toUint16() + 2, // +2 for optionType and dvnIdx
                _dvnIdx,
                _optionType,
                _option
            );
    }

    /**
     * @dev Encodes legacy options of type 1.
     * @param _executionGas The gasLimit value passed to lzReceive().
     * @return legacyOptions The encoded legacy options.
     */
    function encodeLegacyOptionsType1(uint256 _executionGas) internal pure returns (bytes memory) {
        if (_executionGas > type(uint128).max) revert InvalidSize(type(uint128).max, _executionGas);
        return abi.encodePacked(TYPE_1, _executionGas);
    }

    /**
     * @dev Encodes legacy options of type 2.
     * @param _executionGas The gasLimit value passed to lzReceive().
     * @param _nativeForDst The amount of native air dropped to the receiver.
     * @param _receiver The _nativeForDst receiver address.
     * @return legacyOptions The encoded legacy options of type 2.
     */
    function encodeLegacyOptionsType2(
        uint256 _executionGas,
        uint256 _nativeForDst,
        bytes memory _receiver // @dev Use bytes instead of bytes32 in legacy type 2 for _receiver.
    ) internal pure returns (bytes memory) {
        if (_executionGas > type(uint128).max) revert InvalidSize(type(uint128).max, _executionGas);
        if (_nativeForDst > type(uint128).max) revert InvalidSize(type(uint128).max, _nativeForDst);
        if (_receiver.length > 32) revert InvalidSize(32, _receiver.length);
        return abi.encodePacked(TYPE_2, _executionGas, _nativeForDst, _receiver);
    }
}

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

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

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

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (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 reinitialization) 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 Pointer to storage slot. Allows integrators to override it with a custom storage location.
     *
     * NOTE: Consider following the ERC-7201 formula to derive storage locations.
     */
    function _initializableStorageSlot() internal pure virtual returns (bytes32) {
        return INITIALIZABLE_STORAGE;
    }

    /**
     * @dev Returns a pointer to the storage namespace.
     */
    // solhint-disable-next-line var-name-mixedcase
    function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
        bytes32 slot = _initializableStorageSlot();
        assembly {
            $.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 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 Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    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 Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            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 silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.2.0) (utils/Address.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @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 Errors.InsufficientBalance(address(this).balance, amount);
        }

        (bool success, bytes memory returndata) = recipient.call{value: amount}("");
        if (!success) {
            _revert(returndata);
        }
    }

    /**
     * @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
     * {Errors.FailedCall} 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 Errors.InsufficientBalance(address(this).balance, value);
        }
        (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 {Errors.FailedCall}) 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 {Errors.FailedCall} 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 {Errors.FailedCall}.
     */
    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
            assembly ("memory-safe") {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert Errors.FailedCall();
        }
    }
}

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

pragma solidity ^0.8.20;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Errors.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of common custom errors used in multiple contracts
 *
 * IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library.
 * It is recommended to avoid relying on the error API for critical functionality.
 *
 * _Available since v5.1._
 */
library Errors {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error InsufficientBalance(uint256 balance, uint256 needed);

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

    /**
     * @dev The deployment failed.
     */
    error FailedDeployment();

    /**
     * @dev A necessary precompile is missing.
     */
    error MissingPrecompile(address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump.
     */
    function toUint(bool b) internal pure returns (uint256 u) {
        assembly ("memory-safe") {
            u := iszero(iszero(b))
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

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

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

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IAxelarGateway } from '../interfaces/IAxelarGateway.sol';
import { IAxelarExecutable } from '../interfaces/IAxelarExecutable.sol';

contract AxelarExecutable is IAxelarExecutable {
    IAxelarGateway public gateway;

    constructor(address gateway_) {
        if (gateway_ == address(0)) revert InvalidAddress();

        gateway = IAxelarGateway(gateway_);
    }

    function execute(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes calldata payload
    ) external {
        bytes32 payloadHash = keccak256(payload);

        if (!gateway.validateContractCall(commandId, sourceChain, sourceAddress, payloadHash))
            revert NotApprovedByGateway();

        _execute(sourceChain, sourceAddress, payload);
    }

    function executeWithToken(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes calldata payload,
        string calldata tokenSymbol,
        uint256 amount
    ) external {
        bytes32 payloadHash = keccak256(payload);

        if (
            !gateway.validateContractCallAndMint(
                commandId,
                sourceChain,
                sourceAddress,
                payloadHash,
                tokenSymbol,
                amount
            )
        ) revert NotApprovedByGateway();

        _executeWithToken(sourceChain, sourceAddress, payload, tokenSymbol, amount);
    }

    function _execute(
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes calldata payload
    ) internal virtual {}

    function _executeWithToken(
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes calldata payload,
        string calldata tokenSymbol,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IAxelarGateway } from './IAxelarGateway.sol';

interface IAxelarExecutable {
    error InvalidAddress();
    error NotApprovedByGateway();

    function gateway() external view returns (IAxelarGateway);

    function execute(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes calldata payload
    ) external;

    function executeWithToken(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes calldata payload,
        string calldata tokenSymbol,
        uint256 amount
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IGovernable } from './IGovernable.sol';
import { IImplementation } from './IImplementation.sol';

interface IAxelarGateway is IImplementation, IGovernable {
    /**********\
    |* Errors *|
    \**********/

    error NotSelf();
    error InvalidCodeHash();
    error SetupFailed();
    error InvalidAuthModule();
    error InvalidTokenDeployer();
    error InvalidAmount();
    error InvalidChainId();
    error InvalidCommands();
    error TokenDoesNotExist(string symbol);
    error TokenAlreadyExists(string symbol);
    error TokenDeployFailed(string symbol);
    error TokenContractDoesNotExist(address token);
    error BurnFailed(string symbol);
    error MintFailed(string symbol);
    error InvalidSetMintLimitsParams();
    error ExceedMintLimit(string symbol);

    /**********\
    |* Events *|
    \**********/

    event TokenSent(
        address indexed sender,
        string destinationChain,
        string destinationAddress,
        string symbol,
        uint256 amount
    );

    event ContractCall(
        address indexed sender,
        string destinationChain,
        string destinationContractAddress,
        bytes32 indexed payloadHash,
        bytes payload
    );

    event ContractCallWithToken(
        address indexed sender,
        string destinationChain,
        string destinationContractAddress,
        bytes32 indexed payloadHash,
        bytes payload,
        string symbol,
        uint256 amount
    );

    event Executed(bytes32 indexed commandId);

    event TokenDeployed(string symbol, address tokenAddresses);

    event ContractCallApproved(
        bytes32 indexed commandId,
        string sourceChain,
        string sourceAddress,
        address indexed contractAddress,
        bytes32 indexed payloadHash,
        bytes32 sourceTxHash,
        uint256 sourceEventIndex
    );

    event ContractCallApprovedWithMint(
        bytes32 indexed commandId,
        string sourceChain,
        string sourceAddress,
        address indexed contractAddress,
        bytes32 indexed payloadHash,
        string symbol,
        uint256 amount,
        bytes32 sourceTxHash,
        uint256 sourceEventIndex
    );

    event ContractCallExecuted(bytes32 indexed commandId);

    event TokenMintLimitUpdated(string symbol, uint256 limit);

    event OperatorshipTransferred(bytes newOperatorsData);

    event Upgraded(address indexed implementation);

    /********************\
    |* Public Functions *|
    \********************/

    function sendToken(
        string calldata destinationChain,
        string calldata destinationAddress,
        string calldata symbol,
        uint256 amount
    ) external;

    function callContract(
        string calldata destinationChain,
        string calldata contractAddress,
        bytes calldata payload
    ) external;

    function callContractWithToken(
        string calldata destinationChain,
        string calldata contractAddress,
        bytes calldata payload,
        string calldata symbol,
        uint256 amount
    ) external;

    function isContractCallApproved(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        address contractAddress,
        bytes32 payloadHash
    ) external view returns (bool);

    function isContractCallAndMintApproved(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        address contractAddress,
        bytes32 payloadHash,
        string calldata symbol,
        uint256 amount
    ) external view returns (bool);

    function validateContractCall(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes32 payloadHash
    ) external returns (bool);

    function validateContractCallAndMint(
        bytes32 commandId,
        string calldata sourceChain,
        string calldata sourceAddress,
        bytes32 payloadHash,
        string calldata symbol,
        uint256 amount
    ) external returns (bool);

    /***********\
    |* Getters *|
    \***********/

    function authModule() external view returns (address);

    function tokenDeployer() external view returns (address);

    function tokenMintLimit(string memory symbol) external view returns (uint256);

    function tokenMintAmount(string memory symbol) external view returns (uint256);

    function allTokensFrozen() external view returns (bool);

    function implementation() external view returns (address);

    function tokenAddresses(string memory symbol) external view returns (address);

    function tokenFrozen(string memory symbol) external view returns (bool);

    function isCommandExecuted(bytes32 commandId) external view returns (bool);

    /************************\
    |* Governance Functions *|
    \************************/

    function setTokenMintLimits(string[] calldata symbols, uint256[] calldata limits) external;

    function upgrade(
        address newImplementation,
        bytes32 newImplementationCodeHash,
        bytes calldata setupParams
    ) external;

    /**********************\
    |* External Functions *|
    \**********************/

    function execute(bytes calldata input) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// General interface for upgradable contracts
interface IContractIdentifier {
    /**
     * @notice Returns the contract ID. It can be used as a check during upgrades.
     * @dev Meant to be overridden in derived contracts.
     * @return bytes32 The contract ID
     */
    function contractId() external pure returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface ICoral {
    /// @notice Fill type that designates what method to be used on the Spoke on the source chain
    /// upon releasing tokens to the filler.
    /// SINGLE is used when a batch of orders only contains a single unique order.fromToken, and only requires
    /// a single transfer to release the tokens for the batch of orders to the order.filler.
    /// MULTI is used when a batch of orders contains multiple unique order.fromToken, and will use as many
    /// transfers as there are unique tokens in the batch.
    enum FillType {
        // Single token release.
        SINGLE,
        // Multi token release.
        MULTI
    }

    /// @notice Defines the cross-chain messaging provider options available for executing interchain transactions.
    /// Each provider represents a specific protocol for sending and receiving messages across blockchains.
    enum Provider {
        AXELAR,
        LAYERZERO
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IGovernable Interface
 * @notice This is an interface used by the AxelarGateway contract to manage governance and mint limiter roles.
 */
interface IGovernable {
    error NotGovernance();
    error NotMintLimiter();
    error InvalidGovernance();
    error InvalidMintLimiter();

    event GovernanceTransferred(address indexed previousGovernance, address indexed newGovernance);
    event MintLimiterTransferred(address indexed previousGovernance, address indexed newGovernance);

    /**
     * @notice Returns the governance address.
     * @return address of the governance
     */
    function governance() external view returns (address);

    /**
     * @notice Returns the mint limiter address.
     * @return address of the mint limiter
     */
    function mintLimiter() external view returns (address);

    /**
     * @notice Transfer the governance role to another address.
     * @param newGovernance The new governance address
     */
    function transferGovernance(address newGovernance) external;

    /**
     * @notice Transfer the mint limiter role to another address.
     * @param newGovernance The new mint limiter address
     */
    function transferMintLimiter(address newGovernance) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IContractIdentifier } from './IContractIdentifier.sol';

interface IImplementation is IContractIdentifier {
    error NotProxy();

    function setup(bytes calldata data) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {IAxelarGateway} from "./IAxelarGateway.sol";
import {IAxelarGasService} from "@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IAxelarGasService.sol";
import {ICoral} from "./ICoral.sol";
import {ISquidMulticall} from "./ISquidMulticall.sol";

/// @title Spoke
/// @notice Entry point of the protocol. The Spoke.sol contract manages the state of orders, token transfers,
/// and settlement.
interface ISpoke is ICoral {
    /// @notice Order status type that tracks the state of an Order throughout its lifecycle on the Spoke.
    enum OrderStatus {
        // Order does not exist.
        EMPTY,
        // Order has been created, pending settlement.
        CREATED,
        // Order has been settled.
        SETTLED,
        // Order has been refunded.
        REFUNDED
    }

    /// @notice Settlement status type that tracks the settlement state of an Order throughout its lifecycle on the Spoke.
    enum SettlementStatus {
        // Order settlement does not exist.
        EMPTY,
        // Order has been filled.
        FILLED,
        // Order has been forwarded to the Hub pending source token release.
        FORWARDED
    }

    /// @notice Calldata format expected by the Spoke.sol contract.
    struct Order {
        // Address that will supply the fromAmount of fromToken on the fromChain.
        address fromAddress;
        // Address to receive the fillAmount of toToken on the toChain.
        address toAddress;
        // Address that will fill the Order on the toChain.
        address filler;
        // Address of the ERC20 token being supplied on the fromChain.
        // 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE in case of native token.
        address fromToken;
        // Address of the ERC20 token being supplied on the toChain.
        // 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE in case of native token.
        address toToken;
        // Expiration in UNIX for the Order to be created on the fromChain.
        uint256 expiry;
        // Amount of fromToken to be provided by the fromAddress.
        uint256 fromAmount;
        // Amount of toToken to be provided by the filler.
        uint256 fillAmount;
        // Protocol fees are taken out of the fromAmount and are calculated within the Spoke.sol
        // contract for single chain orders or on the Hub for cross chain orders. 
        // The following formula determines the amount of fromToken reserved as fees:
        // fee = (fromAmount * feeRate) / 1000000
        uint256 feeRate;
        // Chain ID of the chain the Order will be created on.
        uint256 fromChain;
        // Chain ID of the chain the Order will be filled on.
        uint256 toChain;
        // Keccak256 hash of the abi.encoded ISquidMulticall.Call[] calldata calls that should be provided
        // at the time of filling the order.
        bytes32 postHookHash;
    }

    /// @notice Emitted when the Spoke.sol contract is successfully initialized after contract deployment.
    /// @param gateway Address set as the relevant Axelar's AxelarGateway.sol contract deployment.
    /// @param gasService Address set as the relevant Axelar's AxelarGasService.sol contract deployment.
    /// @param squidMulticall Address set as the relevant Squid's SquidMulticall.sol contract deployment.
    /// @param feeCollector Address set as the EOA that can collect fees from the protocol.
    /// @param hubChainName Chain name of the chain the Hub.sol contract is deployed to.
    /// @param hubAddress Address set as the relevant Hub.sol contract.
    event SpokeInitialized(
       IAxelarGateway indexed gateway,
       IAxelarGasService indexed gasService,
       ISquidMulticall squidMulticall,
       address feeCollector,
       string hubChainName,
       string hubAddress
    );

    /// @dev Source events
    /// @notice Emitted when fees are collected from the Spoke.sol contract.
    /// @param feeCollector Address of the EOA that collected fees.
    /// @param token Token for which fees were collected.
    /// @param amount Amount of token for which fees were collected.
    event FeesCollected(
        address indexed feeCollector,
        address indexed token,
        uint256 indexed amount
    );
    /// @notice Emitted when an Order is created on the source chain.
    /// @param orderHash Keccak256 hash of the Order that was created.
    /// @param order Raw Order struct of the Order that was created.
    event OrderCreated(bytes32 indexed orderHash, Order order);
    /// @notice Emitted when an Order is refunded on the source chain.
    /// @param orderHash Keccak256 hash of the Order that was refunded.
    event OrderRefunded(bytes32 indexed orderHash);
    /// @notice Emitted when an Order has been settled and tokens released to the filler, completing
    /// its lifecycle.
    /// @param orderHash Keccak256 hash of the Order that was settled.
    event TokensReleased(bytes32 indexed orderHash);

    /// @dev Destination events
    /// @notice Emitted when an Order is filled on the source chain.
    /// @param orderHash Keccak256 hash of the Order that was filled.
    /// @param order Raw Order struct of the Order that was filled.
    event OrderFilled(bytes32 indexed orderHash, Order order);
    /// @notice Emitted when an Order settlement has been forwarded to the Hub for processing.
    /// @param orderHash Keccak256 hash of the Order that was forwarded.
    event SettlementForwarded(bytes32 indexed orderHash);

    /// @notice Thrown when zero msg.value is provided to a function that requires extra native tokens to be
    /// supplied to pay for gas needs.
    error GasRequired();
    /// @notice Thrown when an array has an incorrect length.
    error InvalidArrayLength();
    /// @notice Thrown when the targeted chain is not equal to the order.toChain of the provided Order.
    error InvalidDestinationChain();
    /// @notice Thrown when an invalid FillType is provided to the Axelar GMP targeting the Spoke.sol contract.
    error InvalidFillType();
    /// @notice Thrown when the provided msg.value does not match the order.fromAmount or order.fillAmount of
    /// the provided Order that deals with native tokens.
    error InvalidNativeAmount();
    /// @notice Thrown when the order.postHookHash of the provided Order does not match the keccak256 hash of
    /// the abi.encoded ISquidMulticall.Call[] calldata calls provided while filling an Order.
    error InvalidPostHookProvided();
    /// @notice Thrown when an invalid cross-chain messaging provider is provided to the forwarding function.
    error InvalidProvider();
    /// @notice Thrown when the targeted chain is not equal to the order.fromChain of the provided Order.
    error InvalidSourceChain();
    /// @notice Thrown when the caller address is not equal to the feeCollecter address set within the initializer.
    error OnlyFeeCollector();
    /// @notice Thrown when the caller msg.sender is not equal to the order.filler of the provided Order.
    error OnlyFillerCanSettle();
    /// @notice Thrown when an Axelar GMP is executed from an address or chain that does not match the
    /// hubChainName and hubAddress set within the initializer.
    error OnlyTrustedAddress();
    /// @notice Thrown when the orderHashToStatus of the orderHash of the provided Order is not in the
    // required OrderStatus.EMPTY state.
    error OrderAlreadyExists();
    /// @notice Thrown when the settlementToStatus of the orderHash of the provided Order is not in the
    // required SettlementStatus.EMPTY state.
    error OrderAlreadySettled();
    /// @notice Thrown when the current block.timestamp is greater than the order.expiry of the provided Order.
    error OrderExpired();
    /// @notice Thrown when the current block.timestamp is not greater than the order.expiry + buffer
    /// when attempting to refund an order.
    error OrderNotExpired();
    /// @notice Thrown when the settlementToStatus of the orderHash of the provided Order is not in the
    // required SettlementStatus.FILLED state.
    error OrderNotSettled();
    /// @notice Thrown when the orderHashToStatus of the orderHash of the provided Order is not in the
    // required OrderStatus.CREATED state.
    error OrderStateNotCreated();
    /// @notice Thrown when the order.fromToken of a provided Order is not a native token and a non-zero
    /// msg.value is provided.
    error UnexpectedNativeToken();
    /// @notice Thrown when a LayerZero GMP is executed from an address that does not match the hubAddressBytes32
    /// set within the initializer.
    error UnauthorizedOriginAddress();
    /// @notice Thrown when a LayerZero GMP is executed from an inactive or unapproved chain endpoint.
    error UnauthorizedOriginEndpoint();

    /// @notice Executes the intent on the source chain, locking the ERC20 or native tokens in the
    /// Spoke.sol contract, setting the OrderStatus to CREATED, and making the order eligible
    /// to be filled on the destination chain.
    /// @dev Orders are tied to the keccak256 hash of the Order therefore each Order is unique 
    /// according to the parameters in the Order and can only be executed a single time. Using this
    /// method tokens will transfer from the msg.sender, but the order will belong to the 
    /// order.fromAddress.
    /// @param order Order to be executed by the Spoke.sol contract in the format of the Order struct.
    function createOrder(Order calldata order) external payable;

    /// @notice Refunds an eligible Order, transferring the order.fromAmount of order.fromToken from
    /// the Spoke.sol contract to the order.fromAddress.
    /// @dev Orders can be instantly refunded by the order.filler if the filler decides they don't wish
    /// to fill the order.
    /// @dev Orders can be refunded by anyone as long is the block.timestamp of the target chain is
    /// greater than the order.expiry + 96 hours.
    /// @param order Order to be refunded by the Spoke.sol contract in the format of the Order struct.
    function refundOrder(Order calldata order) external;

    /// @notice Transfers collected protocol fees from the Spoke.sol contract to the feeCollector and
    /// sets the fee balance for the provided tokens to zero.
    /// @dev Fees can be collected for all ERC20 and native tokens, this method will transfer the full
    /// balance of the currently collected fees per token provided.
    /// @param tokens Array of ERC20 tokens to collect fees for.
    function collectFees(address[] calldata tokens) external;

    /// @notice Fills an order on the destination chain, transferring the order.fillAmount of
    /// order.toToken from the order.filler to the order.toAddress, setting the SettlementStatus to
    /// FILLED, and making the order eligible to be forwarded to the Hub for processing.
    /// @dev Orders that contain post hooks (postHookHash != bytes32(0)) require SquidMulticall calls
    /// to be provided during fill. These extra calls will be ran by SquidMulticall after filling the
    /// order during the same transaction.
    /// @dev Only the order.filler can fill any particular order.
    /// @param order Order to be filled by the Spoke.sol contract in the format of the Order struct.
    /// @param calls Calls to be ran by the multicall after fill, formatted to the SquidMulticall Call struct.
    function fillOrder(Order calldata order, ISquidMulticall.Call[] calldata calls) external payable;

    /// @notice Sets the SettlementStatus of orders to FORWARDED and executes an Axelar GMP containing 
    /// an array of eligible order hashes to be sent cross chain to the Hub for processing.
    /// @dev Provided orders must have the settlementToStatus set FILLED to be eligible to be forwarded.
    /// @dev Gas is required in the form of native tokens, therefore the msg.value must contain enough
    /// native token to pay for the Axelar GMP and execution costs of the calldata on the Hub.
    /// @dev It is recommended to forward settlements in batches, the number of orders that can be forwarded
    /// in a batch is dependent on the block gas limit of the particular chain.
    /// @param orderHashes Array of order hashes to be forwarded by the Spoke.sol contract.
    /// @param lzFee LayerZero-specific additional fee required to forward the settlement via LayerZero.
    /// @param gasLimit Execution gas limit for the Message Passing to enforce execution constraints.
    /// @param provider Enum indicating whether the forwarding is done through AXELAR or LAYERZERO provider.
    function forwardSettlements(
        bytes32[] calldata orderHashes,
        uint256 lzFee,
        uint128 gasLimit,
        Provider provider
    ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

/// @title SquidMulticall
/// @notice Multicall logic specific to Squid calls format. The contract specificity is mainly
/// to enable ERC20 and native token amounts in calldata between two calls.
/// @dev Support receiption of NFTs.
interface ISquidMulticall {
    /// @notice Call type that enables to specific behaviours of the multicall.
    enum CallType {
        // Will simply run calldata
        Default,
        // Will update amount field in calldata with ERC20 token balance of the multicall contract.
        FullTokenBalance,
        // Will update amount field in calldata with native token balance of the multicall contract.
        FullNativeBalance,
        // Will run a safeTransferFrom to get full ERC20 token balance of the caller.
        CollectTokenBalance
    }

    /// @notice Calldata format expected by multicall.
    struct Call {
        // Call type, see CallType struct description.
        CallType callType;
        // Address that will be called.
        address target;
        // Native token amount that will be sent in call.
        uint256 value;
        // Calldata that will be send in call.
        bytes callData;
        // Extra data used by multicall depending on call type.
        // Default: unused (provide 0x)
        // FullTokenBalance: address of the ERC20 token to get balance of and zero indexed position
        // of the amount parameter to update in function call contained by calldata.
        // Expect format is: abi.encode(address token, uint256 amountParameterPosition)
        // Eg: for function swap(address tokenIn, uint amountIn, address tokenOut, uint amountOutMin,)
        // amountParameterPosition would be 1.
        // FullNativeBalance: unused (provide 0x)
        // CollectTokenBalance: address of the ERC20 token to collect.
        // Expect format is: abi.encode(address token)
        bytes payload;
    }

    /// Thrown when one of the calls fails.
    /// @param callPosition Zero indexed position of the call in the call set provided to the
    /// multicall.
    /// @param reason Revert data returned by contract called in failing call.
    error CallFailed(uint256 callPosition, bytes reason);

    /// @notice Main function of the multicall that runs the call set.
    /// @param calls Call set to be ran by multicall.
    function run(Call[] calldata calls) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {Address} from "@openzeppelin/contracts/utils/Address.sol";

/// @title Utils
/// @notice Library for general purpose functions and values.
library Utils {
    using Address for address payable;

    /// @notice Arbitrary address chosen to represent native token of current network.
    address internal constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    bytes32 internal constant ORDER_TYPEHASH = keccak256("Order(address fromAddress,address toAddress,address filler,address fromToken,address toToken,uint256 expiry,uint256 fromAmount,uint256 fillAmount,uint256 feeRate,uint256 fromChain,uint256 toChain,bytes32 postHookHash)");
    
    string internal constant ORDER_WITNESS_TYPE_STRING =
        "Order witness)Order(address fromAddress,address toAddress,address filler,address fromToken,address toToken,uint256 expiry,uint256 fromAmount,uint256 fillAmount,uint256 feeRate,uint256 fromChain,uint256 toChain,bytes32 postHookHash)TokenPermissions(address token,uint256 amount)";

    uint256 internal constant FEE_DIVISOR = 1000000;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

import { IMessageLibManager } from "./IMessageLibManager.sol";
import { IMessagingComposer } from "./IMessagingComposer.sol";
import { IMessagingChannel } from "./IMessagingChannel.sol";
import { IMessagingContext } from "./IMessagingContext.sol";

struct MessagingParams {
    uint32 dstEid;
    bytes32 receiver;
    bytes message;
    bytes options;
    bool payInLzToken;
}

struct MessagingReceipt {
    bytes32 guid;
    uint64 nonce;
    MessagingFee fee;
}

struct MessagingFee {
    uint256 nativeFee;
    uint256 lzTokenFee;
}

struct Origin {
    uint32 srcEid;
    bytes32 sender;
    uint64 nonce;
}

interface ILayerZeroEndpointV2 is IMessageLibManager, IMessagingComposer, IMessagingChannel, IMessagingContext {
    event PacketSent(bytes encodedPayload, bytes options, address sendLibrary);

    event PacketVerified(Origin origin, address receiver, bytes32 payloadHash);

    event PacketDelivered(Origin origin, address receiver);

    event LzReceiveAlert(
        address indexed receiver,
        address indexed executor,
        Origin origin,
        bytes32 guid,
        uint256 gas,
        uint256 value,
        bytes message,
        bytes extraData,
        bytes reason
    );

    event LzTokenSet(address token);

    event DelegateSet(address sender, address delegate);

    function quote(MessagingParams calldata _params, address _sender) external view returns (MessagingFee memory);

    function send(
        MessagingParams calldata _params,
        address _refundAddress
    ) external payable returns (MessagingReceipt memory);

    function verify(Origin calldata _origin, address _receiver, bytes32 _payloadHash) external;

    function verifiable(Origin calldata _origin, address _receiver) external view returns (bool);

    function initializable(Origin calldata _origin, address _receiver) external view returns (bool);

    function lzReceive(
        Origin calldata _origin,
        address _receiver,
        bytes32 _guid,
        bytes calldata _message,
        bytes calldata _extraData
    ) external payable;

    // oapp can burn messages partially by calling this function with its own business logic if messages are verified in order
    function clear(address _oapp, Origin calldata _origin, bytes32 _guid, bytes calldata _message) external;

    function setLzToken(address _lzToken) external;

    function lzToken() external view returns (address);

    function nativeToken() external view returns (address);

    function setDelegate(address _delegate) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

import { Origin } from "./ILayerZeroEndpointV2.sol";

interface ILayerZeroReceiver {
    function allowInitializePath(Origin calldata _origin) external view returns (bool);

    function nextNonce(uint32 _eid, bytes32 _sender) external view returns (uint64);

    function lzReceive(
        Origin calldata _origin,
        bytes32 _guid,
        bytes calldata _message,
        address _executor,
        bytes calldata _extraData
    ) external payable;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

struct SetConfigParam {
    uint32 eid;
    uint32 configType;
    bytes config;
}

interface IMessageLibManager {
    struct Timeout {
        address lib;
        uint256 expiry;
    }

    event LibraryRegistered(address newLib);
    event DefaultSendLibrarySet(uint32 eid, address newLib);
    event DefaultReceiveLibrarySet(uint32 eid, address newLib);
    event DefaultReceiveLibraryTimeoutSet(uint32 eid, address oldLib, uint256 expiry);
    event SendLibrarySet(address sender, uint32 eid, address newLib);
    event ReceiveLibrarySet(address receiver, uint32 eid, address newLib);
    event ReceiveLibraryTimeoutSet(address receiver, uint32 eid, address oldLib, uint256 timeout);

    function registerLibrary(address _lib) external;

    function isRegisteredLibrary(address _lib) external view returns (bool);

    function getRegisteredLibraries() external view returns (address[] memory);

    function setDefaultSendLibrary(uint32 _eid, address _newLib) external;

    function defaultSendLibrary(uint32 _eid) external view returns (address);

    function setDefaultReceiveLibrary(uint32 _eid, address _newLib, uint256 _gracePeriod) external;

    function defaultReceiveLibrary(uint32 _eid) external view returns (address);

    function setDefaultReceiveLibraryTimeout(uint32 _eid, address _lib, uint256 _expiry) external;

    function defaultReceiveLibraryTimeout(uint32 _eid) external view returns (address lib, uint256 expiry);

    function isSupportedEid(uint32 _eid) external view returns (bool);

    function isValidReceiveLibrary(address _receiver, uint32 _eid, address _lib) external view returns (bool);

    /// ------------------- OApp interfaces -------------------
    function setSendLibrary(address _oapp, uint32 _eid, address _newLib) external;

    function getSendLibrary(address _sender, uint32 _eid) external view returns (address lib);

    function isDefaultSendLibrary(address _sender, uint32 _eid) external view returns (bool);

    function setReceiveLibrary(address _oapp, uint32 _eid, address _newLib, uint256 _gracePeriod) external;

    function getReceiveLibrary(address _receiver, uint32 _eid) external view returns (address lib, bool isDefault);

    function setReceiveLibraryTimeout(address _oapp, uint32 _eid, address _lib, uint256 _expiry) external;

    function receiveLibraryTimeout(address _receiver, uint32 _eid) external view returns (address lib, uint256 expiry);

    function setConfig(address _oapp, address _lib, SetConfigParam[] calldata _params) external;

    function getConfig(
        address _oapp,
        address _lib,
        uint32 _eid,
        uint32 _configType
    ) external view returns (bytes memory config);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

interface IMessagingChannel {
    event InboundNonceSkipped(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce);
    event PacketNilified(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);
    event PacketBurnt(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);

    function eid() external view returns (uint32);

    // this is an emergency function if a message cannot be verified for some reasons
    // required to provide _nextNonce to avoid race condition
    function skip(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce) external;

    function nilify(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;

    function burn(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;

    function nextGuid(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (bytes32);

    function inboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);

    function outboundNonce(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (uint64);

    function inboundPayloadHash(
        address _receiver,
        uint32 _srcEid,
        bytes32 _sender,
        uint64 _nonce
    ) external view returns (bytes32);

    function lazyInboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

interface IMessagingComposer {
    event ComposeSent(address from, address to, bytes32 guid, uint16 index, bytes message);
    event ComposeDelivered(address from, address to, bytes32 guid, uint16 index);
    event LzComposeAlert(
        address indexed from,
        address indexed to,
        address indexed executor,
        bytes32 guid,
        uint16 index,
        uint256 gas,
        uint256 value,
        bytes message,
        bytes extraData,
        bytes reason
    );

    function composeQueue(
        address _from,
        address _to,
        bytes32 _guid,
        uint16 _index
    ) external view returns (bytes32 messageHash);

    function sendCompose(address _to, bytes32 _guid, uint16 _index, bytes calldata _message) external;

    function lzCompose(
        address _from,
        address _to,
        bytes32 _guid,
        uint16 _index,
        bytes calldata _message,
        bytes calldata _extraData
    ) external payable;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

interface IMessagingContext {
    function isSendingMessage() external view returns (bool);

    function getSendContext() external view returns (uint32 dstEid, address sender);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { ILayerZeroEndpointV2 } from "./ILayerZeroEndpointV2.sol";

/**
 * @title IOAppCore
 */
interface IOAppCore {
    // Custom error messages
    error OnlyPeer(uint32 eid, bytes32 sender);
    error NoPeer(uint32 eid);
    error InvalidEndpointCall();
    error InvalidDelegate();

    // Event emitted when a peer (OApp) is set for a corresponding endpoint
    event PeerSet(uint32 eid, bytes32 peer);

    /**
     * @notice Retrieves the OApp version information.
     * @return senderVersion The version of the OAppSender.sol contract.
     * @return receiverVersion The version of the OAppReceiver.sol contract.
     */
    function oAppVersion() external view returns (uint64 senderVersion, uint64 receiverVersion);

    /**
     * @notice Retrieves the LayerZero endpoint associated with the OApp.
     * @return iEndpoint The LayerZero endpoint as an interface.
     */
    function endpoint() external view returns (ILayerZeroEndpointV2 iEndpoint);

    /**
     * @notice Retrieves the peer (OApp) associated with a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @return peer The peer address (OApp instance) associated with the corresponding endpoint.
     */
    function peers(uint32 _eid) external view returns (bytes32 peer);

    /**
     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @param _peer The address of the peer to be associated with the corresponding endpoint.
     */
    function setPeer(uint32 _eid, bytes32 _peer) external;

    /**
     * @notice Sets the delegate address for the OApp Core.
     * @param _delegate The address of the delegate to be set.
     */
    function setDelegate(address _delegate) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import { ILayerZeroReceiver, Origin } from "./ILayerZeroReceiver.sol";

interface IOAppReceiver is ILayerZeroReceiver {
    /**
     * @notice Indicates whether an address is an approved composeMsg sender to the Endpoint.
     * @param _origin The origin information containing the source endpoint and sender address.
     *  - srcEid: The source chain endpoint ID.
     *  - sender: The sender address on the src chain.
     *  - nonce: The nonce of the message.
     * @param _message The lzReceive payload.
     * @param _sender The sender address.
     * @return isSender Is a valid sender.
     *
     * @dev Applications can optionally choose to implement a separate composeMsg sender that is NOT the bridging layer.
     * @dev The default sender IS the OAppReceiver implementer.
     */
    function isComposeMsgSender(
        Origin calldata _origin,
        bytes calldata _message,
        address _sender
    ) external view returns (bool isSender);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

// @dev Import the 'MessagingFee' and 'MessagingReceipt' so it's exposed to OApp implementers
// solhint-disable-next-line no-unused-import
import { OAppSender, MessagingFee, MessagingReceipt } from "./OAppSender.sol";
// @dev Import the 'Origin' so it's exposed to OApp implementers
// solhint-disable-next-line no-unused-import
import { OAppReceiver, Origin } from "./OAppReceiver.sol";
import { OAppCore } from "./OAppCore.sol";

/**
 * @title OApp
 * @dev Abstract contract serving as the base for OApp implementation, combining OAppSender and OAppReceiver functionality.
 */
abstract contract OApp is OAppSender, OAppReceiver {
    /**
     * @dev Constructor to initialize the OApp with the provided endpoint and owner.
     * @param _endpoint The address of the LOCAL LayerZero endpoint.
     * @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
     */
    constructor(address _endpoint, address _delegate) OAppCore(_endpoint, _delegate) {}

    /**
     * @notice Retrieves the OApp version information.
     * @return senderVersion The version of the OAppSender.sol implementation.
     * @return receiverVersion The version of the OAppReceiver.sol implementation.
     */
    function oAppVersion()
        public
        pure
        virtual
        override(OAppSender, OAppReceiver)
        returns (uint64 senderVersion, uint64 receiverVersion)
    {
        return (SENDER_VERSION, RECEIVER_VERSION);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { IOAppCore, ILayerZeroEndpointV2 } from "./interfaces/IOAppCore.sol";

/**
 * @title OAppCore
 * @dev Abstract contract implementing the IOAppCore interface with basic OApp configurations.
 */
abstract contract OAppCore is IOAppCore, Ownable {
    // The LayerZero endpoint associated with the given OApp
    ILayerZeroEndpointV2 public endpoint;

    // Mapping to store peers associated with corresponding endpoints
    mapping(uint32 eid => bytes32 peer) public peers;

    /**
     * @dev Constructor to initialize the OAppCore with the provided endpoint and delegate.
     * @param _endpoint The address of the LOCAL Layer Zero endpoint.
     * @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
     *
     * @dev The delegate typically should be set as the owner of the contract.
     */
    constructor(address _endpoint, address _delegate) {
        endpoint = ILayerZeroEndpointV2(_endpoint);

        if (_delegate == address(0)) revert InvalidDelegate();
        // endpoint.setDelegate(_delegate);
    }

    /**
     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @param _peer The address of the peer to be associated with the corresponding endpoint.
     *
     * @dev Only the owner/admin of the OApp can call this function.
     * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.
     * @dev Set this to bytes32(0) to remove the peer address.
     * @dev Peer is a bytes32 to accommodate non-evm chains.
     */
    function setPeer(uint32 _eid, bytes32 _peer) public virtual onlyOwner {
        _setPeer(_eid, _peer);
    }

    /**
     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @param _peer The address of the peer to be associated with the corresponding endpoint.
     *
     * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.
     * @dev Set this to bytes32(0) to remove the peer address.
     * @dev Peer is a bytes32 to accommodate non-evm chains.
     */
    function _setPeer(uint32 _eid, bytes32 _peer) internal virtual {
        peers[_eid] = _peer;
        emit PeerSet(_eid, _peer);
    }

    /**
     * @notice Internal function to get the peer address associated with a specific endpoint; reverts if NOT set.
     * ie. the peer is set to bytes32(0).
     * @param _eid The endpoint ID.
     * @return peer The address of the peer associated with the specified endpoint.
     */
    function _getPeerOrRevert(uint32 _eid) internal view virtual returns (bytes32) {
        bytes32 peer = peers[_eid];
        if (peer == bytes32(0)) revert NoPeer(_eid);
        return peer;
    }

    /**
     * @notice Sets the delegate address for the OApp.
     * @param _delegate The address of the delegate to be set.
     *
     * @dev Only the owner/admin of the OApp can call this function.
     * @dev Provides the ability for a delegate to set configs, on behalf of the OApp, directly on the Endpoint contract.
     */
    function setDelegate(address _delegate) public onlyOwner {
        endpoint.setDelegate(_delegate);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { IOAppReceiver, Origin } from "./interfaces/IOAppReceiver.sol";
import { OAppCore } from "./OAppCore.sol";

/**
 * @title OAppReceiver
 * @dev Abstract contract implementing the ILayerZeroReceiver interface and extending OAppCore for OApp receivers.
 */
abstract contract OAppReceiver is IOAppReceiver, OAppCore {
    // Custom error message for when the caller is not the registered endpoint/
    error OnlyEndpoint(address addr);

    // @dev The version of the OAppReceiver implementation.
    // @dev Version is bumped when changes are made to this contract.
    uint64 internal constant RECEIVER_VERSION = 2;

    /**
     * @notice Retrieves the OApp version information.
     * @return senderVersion The version of the OAppSender.sol contract.
     * @return receiverVersion The version of the OAppReceiver.sol contract.
     *
     * @dev Providing 0 as the default for OAppSender version. Indicates that the OAppSender is not implemented.
     * ie. this is a RECEIVE only OApp.
     * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions.
     */
    function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {
        return (0, RECEIVER_VERSION);
    }

    /**
     * @notice Indicates whether an address is an approved composeMsg sender to the Endpoint.
     * @dev _origin The origin information containing the source endpoint and sender address.
     *  - srcEid: The source chain endpoint ID.
     *  - sender: The sender address on the src chain.
     *  - nonce: The nonce of the message.
     * @dev _message The lzReceive payload.
     * @param _sender The sender address.
     * @return isSender Is a valid sender.
     *
     * @dev Applications can optionally choose to implement separate composeMsg senders that are NOT the bridging layer.
     * @dev The default sender IS the OAppReceiver implementer.
     */
    function isComposeMsgSender(
        Origin calldata /*_origin*/,
        bytes calldata /*_message*/,
        address _sender
    ) public view virtual returns (bool) {
        return _sender == address(this);
    }

    /**
     * @notice Checks if the path initialization is allowed based on the provided origin.
     * @param origin The origin information containing the source endpoint and sender address.
     * @return Whether the path has been initialized.
     *
     * @dev This indicates to the endpoint that the OApp has enabled msgs for this particular path to be received.
     * @dev This defaults to assuming if a peer has been set, its initialized.
     * Can be overridden by the OApp if there is other logic to determine this.
     */
    function allowInitializePath(Origin calldata origin) public view virtual returns (bool) {
        return peers[origin.srcEid] == origin.sender;
    }

    /**
     * @notice Retrieves the next nonce for a given source endpoint and sender address.
     * @dev _srcEid The source endpoint ID.
     * @dev _sender The sender address.
     * @return nonce The next nonce.
     *
     * @dev The path nonce starts from 1. If 0 is returned it means that there is NO nonce ordered enforcement.
     * @dev Is required by the off-chain executor to determine the OApp expects msg execution is ordered.
     * @dev This is also enforced by the OApp.
     * @dev By default this is NOT enabled. ie. nextNonce is hardcoded to return 0.
     */
    function nextNonce(uint32 /*_srcEid*/, bytes32 /*_sender*/) public view virtual returns (uint64 nonce) {
        return 0;
    }

    /**
     * @dev Entry point for receiving messages or packets from the endpoint.
     * @param _origin The origin information containing the source endpoint and sender address.
     *  - srcEid: The source chain endpoint ID.
     *  - sender: The sender address on the src chain.
     *  - nonce: The nonce of the message.
     * @param _guid The unique identifier for the received LayerZero message.
     * @param _message The payload of the received message.
     * @param _executor The address of the executor for the received message.
     * @param _extraData Additional arbitrary data provided by the corresponding executor.
     *
     * @dev Entry point for receiving msg/packet from the LayerZero endpoint.
     */
    function lzReceive(
        Origin calldata _origin,
        bytes32 _guid,
        bytes calldata _message,
        address _executor,
        bytes calldata _extraData
    ) public payable virtual {
        // Ensures that only the endpoint can attempt to lzReceive() messages to this OApp.
        if (address(endpoint) != msg.sender) revert OnlyEndpoint(msg.sender);

        // Ensure that the sender matches the expected peer for the source endpoint.
        if (_getPeerOrRevert(_origin.srcEid) != _origin.sender) revert OnlyPeer(_origin.srcEid, _origin.sender);

        // Call the internal OApp implementation of lzReceive.
        _lzReceive(_origin, _guid, _message, _executor, _extraData);
    }

    /**
     * @dev Internal function to implement lzReceive logic without needing to copy the basic parameter validation.
     */
    function _lzReceive(
        Origin calldata _origin,
        bytes32 _guid,
        bytes calldata _message,
        address _executor,
        bytes calldata _extraData
    ) internal virtual;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { MessagingParams, MessagingFee, MessagingReceipt } from "./interfaces/ILayerZeroEndpointV2.sol";
import { OAppCore } from "./OAppCore.sol";

/**
 * @title OAppSender
 * @dev Abstract contract implementing the OAppSender functionality for sending messages to a LayerZero endpoint.
 */
abstract contract OAppSender is OAppCore {
    using SafeERC20 for IERC20;

    // Custom error messages
    error NotEnoughNative(uint256 msgValue);
    error LzTokenUnavailable();

    // @dev The version of the OAppSender implementation.
    // @dev Version is bumped when changes are made to this contract.
    uint64 internal constant SENDER_VERSION = 1;

    /**
     * @notice Retrieves the OApp version information.
     * @return senderVersion The version of the OAppSender.sol contract.
     * @return receiverVersion The version of the OAppReceiver.sol contract.
     *
     * @dev Providing 0 as the default for OAppReceiver version. Indicates that the OAppReceiver is not implemented.
     * ie. this is a SEND only OApp.
     * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions
     */
    function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {
        return (SENDER_VERSION, 0);
    }

    /**
     * @dev Internal function to interact with the LayerZero EndpointV2.quote() for fee calculation.
     * @param _dstEid The destination endpoint ID.
     * @param _message The message payload.
     * @param _options Additional options for the message.
     * @param _payInLzToken Flag indicating whether to pay the fee in LZ tokens.
     * @return fee The calculated MessagingFee for the message.
     *      - nativeFee: The native fee for the message.
     *      - lzTokenFee: The LZ token fee for the message.
     */
    function _quote(
        uint32 _dstEid,
        bytes memory _message,
        bytes memory _options,
        bool _payInLzToken
    ) internal view virtual returns (MessagingFee memory fee) {
        return
            endpoint.quote(
                MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _payInLzToken),
                address(this)
            );
    }

    /**
     * @dev Internal function to interact with the LayerZero EndpointV2.send() for sending a message.
     * @param _dstEid The destination endpoint ID.
     * @param _message The message payload.
     * @param _options Additional options for the message.
     * @param _fee The calculated LayerZero fee for the message.
     *      - nativeFee: The native fee.
     *      - lzTokenFee: The lzToken fee.
     * @param _refundAddress The address to receive any excess fee values sent to the endpoint.
     * @return receipt The receipt for the sent message.
     *      - guid: The unique identifier for the sent message.
     *      - nonce: The nonce of the sent message.
     *      - fee: The LayerZero fee incurred for the message.
     */
    function _lzSend(
        uint32 _dstEid,
        bytes memory _message,
        bytes memory _options,
        MessagingFee memory _fee,
        address _refundAddress
    ) internal virtual returns (MessagingReceipt memory receipt) {
        // @dev Push corresponding fees to the endpoint, any excess is sent back to the _refundAddress from the endpoint.
        uint256 messageValue = _payNative(_fee.nativeFee);
        if (_fee.lzTokenFee > 0) _payLzToken(_fee.lzTokenFee);

        return
            // solhint-disable-next-line check-send-result
            endpoint.send{ value: messageValue }(
                MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _fee.lzTokenFee > 0),
                _refundAddress
            );
    }

    /**
     * @dev Internal function to pay the native fee associated with the message.
     * @param _nativeFee The native fee to be paid.
     * @return nativeFee The amount of native currency paid.
     *
     * @dev If the OApp needs to initiate MULTIPLE LayerZero messages in a single transaction,
     * this will need to be overridden because msg.value would contain multiple lzFees.
     * @dev Should be overridden in the event the LayerZero endpoint requires a different native currency.
     * @dev Some EVMs use an ERC20 as a method for paying transactions/gasFees.
     * @dev The endpoint is EITHER/OR, ie. it will NOT support both types of native payment at a time.
     */
    function _payNative(uint256 _nativeFee) internal virtual returns (uint256 nativeFee) {
        if (msg.value != _nativeFee) revert NotEnoughNative(msg.value);
        return _nativeFee;
    }

    /**
     * @dev Internal function to pay the LZ token fee associated with the message.
     * @param _lzTokenFee The LZ token fee to be paid.
     *
     * @dev If the caller is trying to pay in the specified lzToken, then the lzTokenFee is passed to the endpoint.
     * @dev Any excess sent, is passed back to the specified _refundAddress in the _lzSend().
     */
    function _payLzToken(uint256 _lzTokenFee) internal virtual {
        // @dev Cannot cache the token because it is not immutable in the endpoint.
        address lzToken = endpoint.lzToken();
        if (lzToken == address(0)) revert LzTokenUnavailable();

        // Pay LZ token fee by sending tokens to the endpoint.
        IERC20(lzToken).safeTransferFrom(msg.sender, address(endpoint), _lzTokenFee);
    }
}

// SPDX-License-Identifier: Unlicense
/*
 * @title Solidity Bytes Arrays Utils
 * @author Gonçalo Sá <[email protected]>
 *
 * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 */
pragma solidity >=0.8.0 <0.9.0;


library BytesLib {
    function concat(
        bytes memory _preBytes,
        bytes memory _postBytes
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes memory tempBytes;

        assembly {
            // Get a location of some free memory and store it in tempBytes as
            // Solidity does for memory variables.
            tempBytes := mload(0x40)

            // Store the length of the first bytes array at the beginning of
            // the memory for tempBytes.
            let length := mload(_preBytes)
            mstore(tempBytes, length)

            // Maintain a memory counter for the current write location in the
            // temp bytes array by adding the 32 bytes for the array length to
            // the starting location.
            let mc := add(tempBytes, 0x20)
            // Stop copying when the memory counter reaches the length of the
            // first bytes array.
            let end := add(mc, length)

            for {
                // Initialize a copy counter to the start of the _preBytes data,
                // 32 bytes into its memory.
                let cc := add(_preBytes, 0x20)
            } lt(mc, end) {
                // Increase both counters by 32 bytes each iteration.
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                // Write the _preBytes data into the tempBytes memory 32 bytes
                // at a time.
                mstore(mc, mload(cc))
            }

            // Add the length of _postBytes to the current length of tempBytes
            // and store it as the new length in the first 32 bytes of the
            // tempBytes memory.
            length := mload(_postBytes)
            mstore(tempBytes, add(length, mload(tempBytes)))

            // Move the memory counter back from a multiple of 0x20 to the
            // actual end of the _preBytes data.
            mc := end
            // Stop copying when the memory counter reaches the new combined
            // length of the arrays.
            end := add(mc, length)

            for {
                let cc := add(_postBytes, 0x20)
            } lt(mc, end) {
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                mstore(mc, mload(cc))
            }

            // Update the free-memory pointer by padding our last write location
            // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
            // next 32 byte block, then round down to the nearest multiple of
            // 32. If the sum of the length of the two arrays is zero then add
            // one before rounding down to leave a blank 32 bytes (the length block with 0).
            mstore(0x40, and(
              add(add(end, iszero(add(length, mload(_preBytes)))), 31),
              not(31) // Round down to the nearest 32 bytes.
            ))
        }

        return tempBytes;
    }

    function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal {
        assembly {
            // Read the first 32 bytes of _preBytes storage, which is the length
            // of the array. (We don't need to use the offset into the slot
            // because arrays use the entire slot.)
            let fslot := sload(_preBytes.slot)
            // Arrays of 31 bytes or less have an even value in their slot,
            // while longer arrays have an odd value. The actual length is
            // the slot divided by two for odd values, and the lowest order
            // byte divided by two for even values.
            // If the slot is even, bitwise and the slot with 255 and divide by
            // two to get the length. If the slot is odd, bitwise and the slot
            // with -1 and divide by two.
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)
            let newlength := add(slength, mlength)
            // slength can contain both the length and contents of the array
            // if length < 32 bytes so let's prepare for that
            // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
            switch add(lt(slength, 32), lt(newlength, 32))
            case 2 {
                // Since the new array still fits in the slot, we just need to
                // update the contents of the slot.
                // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length
                sstore(
                    _preBytes.slot,
                    // all the modifications to the slot are inside this
                    // next block
                    add(
                        // we can just add to the slot contents because the
                        // bytes we want to change are the LSBs
                        fslot,
                        add(
                            mul(
                                div(
                                    // load the bytes from memory
                                    mload(add(_postBytes, 0x20)),
                                    // zero all bytes to the right
                                    exp(0x100, sub(32, mlength))
                                ),
                                // and now shift left the number of bytes to
                                // leave space for the length in the slot
                                exp(0x100, sub(32, newlength))
                            ),
                            // increase length by the double of the memory
                            // bytes length
                            mul(mlength, 2)
                        )
                    )
                )
            }
            case 1 {
                // The stored value fits in the slot, but the combined value
                // will exceed it.
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // The contents of the _postBytes array start 32 bytes into
                // the structure. Our first read should obtain the `submod`
                // bytes that can fit into the unused space in the last word
                // of the stored array. To get this, we read 32 bytes starting
                // from `submod`, so the data we read overlaps with the array
                // contents by `submod` bytes. Masking the lowest-order
                // `submod` bytes allows us to add that value directly to the
                // stored value.

                let submod := sub(32, slength)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(
                    sc,
                    add(
                        and(
                            fslot,
                            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00
                        ),
                        and(mload(mc), mask)
                    )
                )

                for {
                    mc := add(mc, 0x20)
                    sc := add(sc, 1)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
            default {
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                // Start copying to the last used word of the stored array.
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // Copy over the first `submod` bytes of the new data as in
                // case 1 above.
                let slengthmod := mod(slength, 32)
                let mlengthmod := mod(mlength, 32)
                let submod := sub(32, slengthmod)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(sc, add(sload(sc), and(mload(mc), mask)))

                for {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
        }
    }

    function slice(
        bytes memory _bytes,
        uint256 _start,
        uint256 _length
    )
        internal
        pure
        returns (bytes memory)
    {
        // We're using the unchecked block below because otherwise execution ends 
        // with the native overflow error code.
        unchecked {
            require(_length + 31 >= _length, "slice_overflow");
        }
        require(_bytes.length >= _start + _length, "slice_outOfBounds");

        bytes memory tempBytes;

        assembly {
            switch iszero(_length)
            case 0 {
                // Get a location of some free memory and store it in tempBytes as
                // Solidity does for memory variables.
                tempBytes := mload(0x40)

                // The first word of the slice result is potentially a partial
                // word read from the original array. To read it, we calculate
                // the length of that partial word and start copying that many
                // bytes into the array. The first word we copy will start with
                // data we don't care about, but the last `lengthmod` bytes will
                // land at the beginning of the contents of the new array. When
                // we're done copying, we overwrite the full first word with
                // the actual length of the slice.
                let lengthmod := and(_length, 31)

                // The multiplication in the next line is necessary
                // because when slicing multiples of 32 bytes (lengthmod == 0)
                // the following copy loop was copying the origin's length
                // and then ending prematurely not copying everything it should.
                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))
                let end := add(mc, _length)

                for {
                    // The multiplication in the next line has the same exact purpose
                    // as the one above.
                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)
                } lt(mc, end) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    mstore(mc, mload(cc))
                }

                mstore(tempBytes, _length)

                //update free-memory pointer
                //allocating the array padded to 32 bytes like the compiler does now
                mstore(0x40, and(add(mc, 31), not(31)))
            }
            //if we want a zero-length slice let's just return a zero-length array
            default {
                tempBytes := mload(0x40)
                //zero out the 32 bytes slice we are about to return
                //we need to do it because Solidity does not garbage collect
                mstore(tempBytes, 0)

                mstore(0x40, add(tempBytes, 0x20))
            }
        }

        return tempBytes;
    }

    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= _start + 20, "toAddress_outOfBounds");
        address tempAddress;

        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }

        return tempAddress;
    }

    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {
        require(_bytes.length >= _start + 1 , "toUint8_outOfBounds");
        uint8 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x1), _start))
        }

        return tempUint;
    }

    function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {
        require(_bytes.length >= _start + 2, "toUint16_outOfBounds");
        uint16 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x2), _start))
        }

        return tempUint;
    }

    function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {
        require(_bytes.length >= _start + 4, "toUint32_outOfBounds");
        uint32 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x4), _start))
        }

        return tempUint;
    }

    function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {
        require(_bytes.length >= _start + 8, "toUint64_outOfBounds");
        uint64 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x8), _start))
        }

        return tempUint;
    }

    function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {
        require(_bytes.length >= _start + 12, "toUint96_outOfBounds");
        uint96 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0xc), _start))
        }

        return tempUint;
    }

    function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {
        require(_bytes.length >= _start + 16, "toUint128_outOfBounds");
        uint128 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x10), _start))
        }

        return tempUint;
    }

    function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
        require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
        uint256 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }

        return tempUint;
    }

    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
        require(_bytes.length >= _start + 32, "toBytes32_outOfBounds");
        bytes32 tempBytes32;

        assembly {
            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
        }

        return tempBytes32;
    }

    function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {
        bool success = true;

        assembly {
            let length := mload(_preBytes)

            // if lengths don't match the arrays are not equal
            switch eq(length, mload(_postBytes))
            case 1 {
                // cb is a circuit breaker in the for loop since there's
                //  no said feature for inline assembly loops
                // cb = 1 - don't breaker
                // cb = 0 - break
                let cb := 1

                let mc := add(_preBytes, 0x20)
                let end := add(mc, length)

                for {
                    let cc := add(_postBytes, 0x20)
                // the next line is the loop condition:
                // while(uint256(mc < end) + cb == 2)
                } eq(add(lt(mc, end), cb), 2) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    // if any of these checks fails then arrays are not equal
                    if iszero(eq(mload(mc), mload(cc))) {
                        // unsuccess:
                        success := 0
                        cb := 0
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }

    function equalStorage(
        bytes storage _preBytes,
        bytes memory _postBytes
    )
        internal
        view
        returns (bool)
    {
        bool success = true;

        assembly {
            // we know _preBytes_offset is 0
            let fslot := sload(_preBytes.slot)
            // Decode the length of the stored array like in concatStorage().
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)

            // if lengths don't match the arrays are not equal
            switch eq(slength, mlength)
            case 1 {
                // slength can contain both the length and contents of the array
                // if length < 32 bytes so let's prepare for that
                // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
                if iszero(iszero(slength)) {
                    switch lt(slength, 32)
                    case 1 {
                        // blank the last byte which is the length
                        fslot := mul(div(fslot, 0x100), 0x100)

                        if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) {
                            // unsuccess:
                            success := 0
                        }
                    }
                    default {
                        // cb is a circuit breaker in the for loop since there's
                        //  no said feature for inline assembly loops
                        // cb = 1 - don't breaker
                        // cb = 0 - break
                        let cb := 1

                        // get the keccak hash to get the contents of the array
                        mstore(0x0, _preBytes.slot)
                        let sc := keccak256(0x0, 0x20)

                        let mc := add(_postBytes, 0x20)
                        let end := add(mc, mlength)

                        // the next line is the loop condition:
                        // while(uint256(mc < end) + cb == 2)
                        for {} eq(add(lt(mc, end), cb), 2) {
                            sc := add(sc, 1)
                            mc := add(mc, 0x20)
                        } {
                            if iszero(eq(sload(sc), mload(mc))) {
                                // unsuccess:
                                success := 0
                                cb := 0
                            }
                        }
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 9999
  },
  "viaIR": true,
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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ISpoke.Order","name":"order","type":"tuple"}],"name":"refundOrder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_delegate","type":"address"}],"name":"setDelegate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_eid","type":"uint32"},{"internalType":"bytes32","name":"_peer","type":"bytes32"}],"name":"setPeer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"settlementToStatus","outputs":[{"internalType":"enum ISpoke.SettlementStatus","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"squidMulticall","outputs":[{"internalType":"contract ISquidMulticall","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"tokenToCollectedFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"chain","type":"string"}],"name":"trustedAddress","outputs":[{"internalType":"string","name":"trustedAddress_","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"chain","type":"string"}],"name":"trustedAddressHash","outputs":[{"internalType":"bytes32","name":"trustedAddressHash_","type":"bytes32"}],"stateMutability":"view","type":"function"}]

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