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// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

/*

Coded for Everclear with ♥ by

░██╗░░░░░░░██╗░█████╗░███╗░░██╗██████╗░███████╗██████╗░██╗░░░░░░█████╗░███╗░░██╗██████╗░
░██║░░██╗░░██║██╔══██╗████╗░██║██╔══██╗██╔════╝██╔══██╗██║░░░░░██╔══██╗████╗░██║██╔══██╗
░╚██╗████╗██╔╝██║░░██║██╔██╗██║██║░░██║█████╗░░██████╔╝██║░░░░░███████║██╔██╗██║██║░░██║
░░████╔═████║░██║░░██║██║╚████║██║░░██║██╔══╝░░██╔══██╗██║░░░░░██╔══██║██║╚████║██║░░██║
░░╚██╔╝░╚██╔╝░╚█████╔╝██║░╚███║██████╔╝███████╗██║░░██║███████╗██║░░██║██║░╚███║██████╔╝
░░░╚═╝░░░╚═╝░░░╚════╝░╚═╝░░╚══╝╚═════╝░╚══════╝╚═╝░░╚═╝╚══════╝╚═╝░░╚═╝╚═╝░░╚══╝╚═════╝░

https://defi.sucks

*/

import {OwnableUpgradeable} from '@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol';
import {UUPSUpgradeable} from '@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol';
import {NoncesUpgradeable} from '@openzeppelin/contracts-upgradeable/utils/NoncesUpgradeable.sol';

import {ERC20} from '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import {SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

import {ECDSA} from '@openzeppelin/contracts/utils/cryptography/ECDSA.sol';
import {MessageHashUtils} from '@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol';

import {AssetUtils} from 'contracts/common/AssetUtils.sol';
import {Constants as Common} from 'contracts/common/Constants.sol';
import {MessageLib} from 'contracts/common/MessageLib.sol';
import {QueueLib} from 'contracts/common/QueueLib.sol';
import {TypeCasts} from 'contracts/common/TypeCasts.sol';

import {Constants} from 'contracts/intent/lib/Constants.sol';

import {IEverclear} from 'interfaces/common/IEverclear.sol';

import {IMessageReceiver} from 'interfaces/common/IMessageReceiver.sol';
import {IPermit2} from 'interfaces/common/IPermit2.sol';
import {ISettlementModule} from 'interfaces/common/ISettlementModule.sol';
import {IEverclearSpokeV4} from 'interfaces/intent/IEverclearSpokeV4.sol';
import {ISpokeGateway} from 'interfaces/intent/ISpokeGateway.sol';

import {SpokeStorageV4} from 'contracts/intent/SpokeStorageV4.sol';
/**
 * @title EverclearSpoke
 * @notice Spoke contract for Everclear
 */

contract EverclearSpokeV4 is
  SpokeStorageV4,
  UUPSUpgradeable,
  OwnableUpgradeable,
  NoncesUpgradeable,
  IEverclearSpokeV4,
  IMessageReceiver
{
  using QueueLib for QueueLib.IntentQueue;
  using QueueLib for QueueLib.FillQueue;
  using SafeERC20 for IERC20;
  using TypeCasts for address;
  using TypeCasts for bytes32;

  constructor() {
    _disableInitializers();
  }

  /*///////////////////////////////////////////////////////////////
                       EXTERNAL FUNCTIONS
  //////////////////////////////////////////////////////////////*/

  /// @inheritdoc IEverclearSpokeV4
  function pause() external hasPauseAccess {
    paused = true;
    emit Paused();
  }

  /// @inheritdoc IEverclearSpokeV4
  function unpause() external hasPauseAccess {
    paused = false;
    emit Unpaused();
  }

  /// @inheritdoc IEverclearSpokeV4
  function setStrategyForAsset(address _asset, IEverclear.Strategy _strategy) external onlyOwner {
    strategies[_asset] = _strategy;
    emit StrategySetForAsset(_asset, _strategy);
  }

  /// @inheritdoc IEverclearSpokeV4
  function setModuleForStrategy(IEverclear.Strategy _strategy, ISettlementModule _module) external onlyOwner {
    modules[_strategy] = _module;
    emit ModuleSetForStrategy(_strategy, _module);
  }

  /// @inheritdoc IEverclearSpokeV4
  function updateSecurityModule(
    address _newSecurityModule
  ) external onlyOwner {
    gateway.updateSecurityModule(_newSecurityModule);
  }

  /// @inheritdoc IEverclearSpokeV4
  function updateFeeAdapter(
    address _feeAdapter
  ) external onlyOwner {
    feeAdapter = _feeAdapter;
    emit FeeAdapterUpdated(_feeAdapter);
  }

  /// @inheritdoc IMessageReceiver
  function receiveMessage(
    bytes calldata
  ) external {
    _delegate(messageReceiver);
  }

  /// @inheritdoc IEverclearSpokeV4
  function newIntent(
    uint32[] memory _destinations,
    bytes32 _receiver,
    address _inputAsset,
    bytes32 _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data
  ) external whenNotPaused onlyFeeAdapter returns (bytes32 _intentId, Intent memory _intent) {
    if (_destinations.length > 10) revert EverclearSpoke_NewIntent_InvalidIntent();
    (_intentId, _intent) = _newIntent({
      _destinations: _destinations,
      _receiver: _receiver,
      _inputAsset: _inputAsset,
      _outputAsset: _outputAsset,
      _amount: _amount,
      _maxFee: _maxFee,
      _ttl: _ttl,
      _data: _data,
      _usesPermit2: false
    });
  }

  /// @inheritdoc IEverclearSpokeV4
  function newIntent(
    uint32[] memory _destinations,
    address _receiver,
    address _inputAsset,
    address _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data
  ) external whenNotPaused onlyFeeAdapter returns (bytes32 _intentId, Intent memory _intent) {
    if (_destinations.length > 10) revert EverclearSpoke_NewIntent_InvalidIntent();
    (_intentId, _intent) = _newIntent({
      _destinations: _destinations,
      _receiver: _receiver.toBytes32(),
      _inputAsset: _inputAsset,
      _outputAsset: _outputAsset.toBytes32(),
      _amount: _amount,
      _maxFee: _maxFee,
      _ttl: _ttl,
      _data: _data,
      _usesPermit2: false
    });
  }

  /// @inheritdoc IEverclearSpokeV4
  function newIntent(
    uint32[] memory _destinations,
    address _receiver,
    address _inputAsset,
    address _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data,
    Permit2Params calldata _permit2Params
  ) external whenNotPaused onlyFeeAdapter returns (bytes32 _intentId, Intent memory _intent) {
    if (_destinations.length > 10) revert EverclearSpoke_NewIntent_InvalidIntent();
    PERMIT2.permitTransferFrom(
      IPermit2.PermitTransferFrom({
        permitted: IPermit2.TokenPermissions({token: IERC20(_inputAsset), amount: _amount}),
        nonce: _permit2Params.nonce,
        deadline: _permit2Params.deadline
      }),
      IPermit2.SignatureTransferDetails({to: address(this), requestedAmount: _amount}),
      msg.sender,
      _permit2Params.signature
    );

    (_intentId, _intent) = _newIntent({
      _destinations: _destinations,
      _receiver: _receiver.toBytes32(),
      _inputAsset: _inputAsset,
      _outputAsset: _outputAsset.toBytes32(),
      _amount: _amount,
      _maxFee: _maxFee,
      _ttl: _ttl,
      _data: _data,
      _usesPermit2: true
    });
  }

  /// @inheritdoc IEverclearSpokeV4
  function fillIntent(
    Intent calldata _intent,
    uint24 _fee
  ) external whenNotPaused returns (FillMessage memory _fillMessage) {
    _fillMessage = _fillIntent(_intent, msg.sender, _fee);
  }

  /// @inheritdoc IEverclearSpokeV4
  function fillIntentForSolver(
    address _solver,
    Intent calldata _intent,
    uint256 _nonce,
    uint24 _fee,
    bytes calldata _signature
  ) external whenNotPaused returns (FillMessage memory _fillMessage) {
    bytes memory _data = abi.encode(FILL_INTENT_FOR_SOLVER_TYPEHASH, _intent, _nonce, _fee);
    _verifySignature(_solver, _data, _nonce, _signature);

    _fillMessage = _fillIntent(_intent, _solver, _fee);
  }

  /// @inheritdoc IEverclearSpokeV4
  function processIntentQueue(
    Intent[] calldata _intents
  ) external payable whenNotPaused {
    (bytes memory _batchIntentmessage, uint256 _firstIdx) = _processIntentQueue(_intents);

    (bytes32 _messageId, uint256 _feeSpent) =
      gateway.sendMessage{value: msg.value}(EVERCLEAR, _batchIntentmessage, messageGasLimit);

    emit IntentQueueProcessed(_messageId, _firstIdx, _firstIdx + _intents.length, _feeSpent);
  }

  /// @inheritdoc IEverclearSpokeV4
  function processFillQueue(
    uint32 _amount
  ) external payable whenNotPaused {
    (bytes memory _batchFillMessage, uint256 _firstIdx) = _processFillQueue(_amount);

    (bytes32 _messageId, uint256 _feeSpent) =
      gateway.sendMessage{value: msg.value}(EVERCLEAR, _batchFillMessage, messageGasLimit);

    emit FillQueueProcessed(_messageId, _firstIdx, _firstIdx + _amount, _feeSpent);
  }

  /// @inheritdoc IEverclearSpokeV4
  function processIntentQueueViaRelayer(
    uint32 _domain,
    Intent[] calldata _intents,
    address _relayer,
    uint256 _ttl,
    uint256 _nonce,
    uint256 _bufferDBPS,
    bytes calldata _signature
  ) external whenNotPaused {
    uint32 _amount = uint32(_intents.length);
    bytes memory _data =
      abi.encode(PROCESS_INTENT_QUEUE_VIA_RELAYER_TYPEHASH, _domain, _amount, _relayer, _ttl, _nonce, _bufferDBPS);
    _verifySignature(lighthouse, _data, _nonce, _signature);
    _processQueueChecks(_domain, _relayer, _ttl);

    (bytes memory _batchIntentmessage, uint256 _firstIdx) = _processIntentQueue(_intents);

    uint256 _fee = gateway.quoteMessage(EVERCLEAR, _batchIntentmessage, messageGasLimit);

    (bytes32 _messageId, uint256 _feeSpent) = gateway.sendMessage(
      EVERCLEAR, _batchIntentmessage, _fee + ((_fee * _bufferDBPS) / Common.DBPS_DENOMINATOR), messageGasLimit
    );

    emit IntentQueueProcessed(_messageId, _firstIdx, _firstIdx + _amount, _feeSpent);
  }

  /// @inheritdoc IEverclearSpokeV4
  function processFillQueueViaRelayer(
    uint32 _domain,
    uint32 _amount,
    address _relayer,
    uint256 _ttl,
    uint256 _nonce,
    uint256 _bufferDBPS,
    bytes calldata _signature
  ) external whenNotPaused {
    bytes memory _data =
      abi.encode(PROCESS_FILL_QUEUE_VIA_RELAYER_TYPEHASH, _domain, _amount, _relayer, _ttl, _nonce, _bufferDBPS);
    _verifySignature(lighthouse, _data, _nonce, _signature);
    _processQueueChecks(_domain, _relayer, _ttl);

    (bytes memory _batchFillMessage, uint256 _firstIdx) = _processFillQueue(_amount);

    uint256 _fee = gateway.quoteMessage(EVERCLEAR, _batchFillMessage, messageGasLimit);

    (bytes32 _messageId, uint256 _feeSpent) = gateway.sendMessage(
      EVERCLEAR, _batchFillMessage, _fee + ((_fee * _bufferDBPS) / Common.DBPS_DENOMINATOR), messageGasLimit
    );

    emit FillQueueProcessed(_messageId, _firstIdx, _firstIdx + _amount, _feeSpent);
  }

  /// @inheritdoc IEverclearSpokeV4
  function deposit(address _asset, uint256 _amount) external whenNotPaused {
    _pullTokens(msg.sender, _asset, _amount);
    balances[_asset.toBytes32()][msg.sender.toBytes32()] += _amount;

    emit Deposited(msg.sender, _asset, _amount);
  }

  /// @inheritdoc IEverclearSpokeV4
  function withdraw(address _asset, uint256 _amount) external whenNotPaused {
    balances[_asset.toBytes32()][msg.sender.toBytes32()] -= _amount;

    _pushTokens(msg.sender, _asset, _amount);
    emit Withdrawn(msg.sender, _asset, _amount);
  }

  /// @inheritdoc IEverclearSpokeV4
  function updateGateway(
    address _newGateway
  ) external onlyOwner {
    address _oldGateway = address(gateway);
    gateway = ISpokeGateway(_newGateway);

    emit GatewayUpdated(_oldGateway, _newGateway);
  }

  /// @inheritdoc IEverclearSpokeV4
  function updateMessageReceiver(
    address _newMessageReceiver
  ) external onlyOwner {
    address _oldMessageReceiver = messageReceiver;
    messageReceiver = _newMessageReceiver;
    emit MessageReceiverUpdated(_oldMessageReceiver, _newMessageReceiver);
  }

  /// @inheritdoc IEverclearSpokeV4
  function updateMessageGasLimit(
    uint256 _newGasLimit
  ) external onlyOwner {
    uint256 _oldGasLimit = messageGasLimit;
    messageGasLimit = _newGasLimit;
    emit MessageGasLimitUpdated(_oldGasLimit, _newGasLimit);
  }

  /// @inheritdoc IEverclearSpokeV4
  function executeIntentCalldata(
    Intent calldata _intent
  ) external whenNotPaused validDestination(_intent) {
    bytes32 _intentId = keccak256(abi.encode(_intent));

    if (status[_intentId] != IntentStatus.SETTLED) {
      revert EverclearSpoke_ExecuteIntentCalldata_InvalidStatus(_intentId);
    }

    // internal method will revert if it fails
    _executeCalldata(_intentId, _intent.data);

    status[_intentId] = IntentStatus.SETTLED_AND_MANUALLY_EXECUTED;
  }

  /*///////////////////////////////////////////////////////////////
                           INITIALIZER
  //////////////////////////////////////////////////////////////*/

  /// @inheritdoc IEverclearSpokeV4
  function initialize(
    address _feeAdapter
  ) public reinitializer(2) {
    feeAdapter = _feeAdapter;
  }

  /*///////////////////////////////////////////////////////////////
                       INTERNAL FUNCTIONS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Creates a new intent
   * @param _destinations The destination chains of the intent
   * @param _receiver The destinantion address of the intent
   * @param _inputAsset The asset address on origin
   * @param _outputAsset The asset address on destination
   * @param _amount The amount of the asset
   * @param _maxFee The maximum fee that can be taken by solvers
   * @param _ttl The time to live of the intent
   * @param _data The data of the intent
   * @param _usesPermit2 If the intent uses permit2
   * @return _intentId The ID of the intent
   * @return _intent The intent structure
   */
  function _newIntent(
    uint32[] memory _destinations,
    bytes32 _receiver,
    address _inputAsset,
    bytes32 _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data,
    bool _usesPermit2
  ) internal returns (bytes32 _intentId, Intent memory _intent) {
    if (_destinations.length == 1) {
      // output asset should not be null if the intent has a single destination and ttl != 0
      if (_ttl != 0 && _outputAsset == 0) revert EverclearSpoke_NewIntent_InvalidIntent();
    } else {
      // output asset should be null if the intent has multiple destinations
      // ttl should be 0 if the intent has multiple destinations
      if (_ttl != 0 || _outputAsset != 0) revert EverclearSpoke_NewIntent_InvalidIntent();
    }

    if (_maxFee > Common.DBPS_DENOMINATOR) {
      revert EverclearSpoke_NewIntent_MaxFeeExceeded(_maxFee, Common.DBPS_DENOMINATOR);
    }

    if (_data.length > Common.MAX_CALLDATA_SIZE) {
      revert EverclearSpoke_NewIntent_CalldataExceedsLimit();
    }

    uint256 _normalizedAmount =
      AssetUtils.normalizeDecimals(ERC20(_inputAsset).decimals(), Common.DEFAULT_NORMALIZED_DECIMALS, _amount);

    // check normalized amount before pulling tokens
    if (_normalizedAmount == 0) {
      revert EverclearSpoke_NewIntent_ZeroAmount();
    }

    if (!_usesPermit2) {
      Strategy _strategy = strategies[_inputAsset];
      if (_strategy == Strategy.DEFAULT) {
        _pullTokens(msg.sender, _inputAsset, _amount);
      } else {
        ISettlementModule _module = modules[_strategy];
        _module.handleBurnStrategy(_inputAsset, msg.sender, _amount, '');
      }
    }

    _intent = Intent({
      initiator: msg.sender.toBytes32(),
      receiver: _receiver,
      inputAsset: _inputAsset.toBytes32(),
      outputAsset: _outputAsset,
      maxFee: _maxFee,
      origin: DOMAIN,
      nonce: ++nonce,
      timestamp: uint48(block.timestamp),
      ttl: _ttl,
      amount: _normalizedAmount,
      destinations: _destinations,
      data: _data
    });

    _intentId = keccak256(abi.encode(_intent));

    intentQueue.enqueueIntent(_intentId);

    status[_intentId] = IntentStatus.ADDED;

    emit IntentAdded(_intentId, intentQueue.last, _intent);
  }

  /**
   * @notice Fills an intent
   * @param _intent The intent structure
   * @param _solver The solver address
   * @param _fee The total fee, expressed in dbps, represents the solver fee plus the sum of protocol fees for the token
   * @return _fillMessage The fill message
   */
  function _fillIntent(
    Intent calldata _intent,
    address _solver,
    uint24 _fee
  ) internal validDestination(_intent) returns (FillMessage memory _fillMessage) {
    bytes32 _intentId = keccak256(abi.encode(_intent));
    if (block.timestamp >= _intent.timestamp + _intent.ttl) {
      revert EverclearSpoke_FillIntent_IntentExpired(_intentId);
    }

    if (_fee > _intent.maxFee) {
      revert EverclearSpoke_FillIntent_MaxFeeExceeded(_fee, _intent.maxFee);
    }

    if (status[_intentId] != IntentStatus.NONE) {
      revert EverclearSpoke_FillIntent_InvalidStatus(_intentId);
    }

    uint256 _amount = AssetUtils.normalizeDecimals(
      Common.DEFAULT_NORMALIZED_DECIMALS, ERC20(_intent.outputAsset.toAddress()).decimals(), _intent.amount
    );

    uint256 _feeDeduction = _amount * _fee / Common.DBPS_DENOMINATOR;
    uint256 _finalAmount = _amount - _feeDeduction;

    if (balances[_intent.outputAsset][_solver.toBytes32()] < _finalAmount) {
      revert EverclearSpoke_FillIntent_InsufficientFunds(
        _finalAmount, balances[_intent.outputAsset][_solver.toBytes32()]
      );
    }

    balances[_intent.outputAsset][_solver.toBytes32()] -= _finalAmount;
    status[_intentId] = IntentStatus.FILLED;

    if (_intent.receiver != 0 && _intent.outputAsset != 0 && _amount != 0) {
      _pushTokens(_intent.receiver.toAddress(), _intent.outputAsset.toAddress(), _finalAmount);
    }

    if (keccak256(_intent.data) != Constants.EMPTY_HASH) {
      _executeCalldata(_intentId, _intent.data);
    }

    _fillMessage = FillMessage({
      intentId: _intentId,
      initiator: _intent.initiator,
      solver: _solver.toBytes32(),
      executionTimestamp: uint48(block.timestamp),
      fee: _fee
    });

    fillQueue.enqueueFill(_fillMessage);

    emit IntentFilled(_intentId, _solver, _fee, fillQueue.last, _intent);
  }

  /**
   * @notice Verifies a signature
   * @param _signer The signer of the message
   * @param _data The data of the message
   * @param _nonce The nonce of the message
   * @param _signature The signature of the message
   */
  function _verifySignature(address _signer, bytes memory _data, uint256 _nonce, bytes calldata _signature) internal {
    bytes32 _hash = keccak256(_data);
    address _recoveredSigner = ECDSA.recover(MessageHashUtils.toEthSignedMessageHash(_hash), _signature);
    if (_recoveredSigner != _signer) {
      revert EverclearSpoke_InvalidSignature();
    }

    _useCheckedNonce(_recoveredSigner, _nonce);
  }

  /**
   * @notice Process the intent queue messages to send a batching message to the transport layer
   * @param _intents The intents to process, the order of the intents must match the order in the queue
   * @return _batchIntentmessage The batched intent message
   * @return _firstIdx The first index of the intents processed
   */
  function _processIntentQueue(
    Intent[] calldata _intents
  )
    internal
    validQueueAmount(intentQueue.first, intentQueue.last, _intents.length)
    returns (bytes memory _batchIntentmessage, uint256 _firstIdx)
  {
    _firstIdx = intentQueue.first;

    for (uint32 _i; _i < _intents.length; _i++) {
      bytes32 _queueIntentId = intentQueue.dequeueIntent();
      bytes32 _intentHash = keccak256(abi.encode(_intents[_i]));
      // verify the intent and its position in the queue
      if (_queueIntentId != _intentHash) {
        revert EverclearSpoke_ProcessIntentQueue_NotFound(_intentHash, _i);
      }
    }

    _batchIntentmessage = MessageLib.formatIntentMessageBatch(_intents);
  }

  /**
   * @notice Process the fill queue messages to send a batching message to the transport layer
   * @param _amount The amount of messages to process
   * @return _batchFillMessage The batched fill message
   * @return _firstIdx The first index of the fills processed
   */
  function _processFillQueue(
    uint32 _amount
  )
    internal
    validQueueAmount(fillQueue.first, fillQueue.last, _amount)
    returns (bytes memory _batchFillMessage, uint256 _firstIdx)
  {
    _firstIdx = fillQueue.first;

    FillMessage[] memory _fillMessages = new FillMessage[](_amount);
    for (uint32 _i; _i < _amount; _i++) {
      _fillMessages[_i] = fillQueue.dequeueFill();
    }

    _batchFillMessage = MessageLib.formatFillMessageBatch(_fillMessages);
  }

  /**
   * @notice Executes the calldata of an intent
   * @param _intentId The intent ID
   * @param _data The calldata of the intent
   */
  function _executeCalldata(bytes32 _intentId, bytes memory _data) internal {
    (address _target, bytes memory _calldata) = abi.decode(_data, (address, bytes));

    (bool _success, bytes memory _returnData) = callExecutor.excessivelySafeCall(
      _target, gasleft() - Constants.EXECUTE_CALLDATA_RESERVE_GAS, 0, Constants.DEFAULT_COPY_BYTES, _calldata
    );

    if (_success) {
      emit ExternalCalldataExecuted(_intentId, _returnData);
    } else {
      revert EverclearSpoke_ExecuteIntentCalldata_ExternalCallFailed();
    }
  }

  /**
   * @notice Pull tokens from the sender to the spoke contract
   * @param _sender The address of the sender
   * @param _asset The address of the asset
   * @param _amount The amount of the asset
   */
  function _pullTokens(address _sender, address _asset, uint256 _amount) internal {
    IERC20(_asset).safeTransferFrom(_sender, address(this), _amount);
  }

  /**
   * @notice Push tokens from the spoke contract to the recipient
   * @param _recipient The address of the recipient
   * @param _asset The address of the asset
   * @param _amount The amount of the asset
   */
  function _pushTokens(address _recipient, address _asset, uint256 _amount) internal {
    IERC20(_asset).safeTransfer(_recipient, _amount);
  }

  /**
   * @notice Perform a `delegatcall`
   * @param _delegatee The address of the delegatee
   */
  function _delegate(
    address _delegatee
  ) internal {
    assembly {
      // Copy msg.data. We take full control of memory in this inline assembly
      // block because it will not return to Solidity code. We overwrite the
      // Solidity scratch pad at memory position 0.
      calldatacopy(0, 0, calldatasize())

      // Call the implementation.
      // out and outsize are 0 because we don't know the size yet.
      let result := delegatecall(gas(), _delegatee, 0, calldatasize(), 0, 0)

      // Copy the returned data.
      returndatacopy(0, 0, returndatasize())

      switch result
      // delegatecall returns 0 on error.
      case 0 { revert(0, returndatasize()) }
      default { return(0, returndatasize()) }
    }
  }

  /**
   * @notice Checks that the upgrade function is called by the owner
   */
  function _authorizeUpgrade(
    address
  ) internal override onlyOwner {}

  /**
   * @notice Process queue checks (applied when a relayer tries to process a queue)
   * @param _domain The domain of the queue
   * @param _relayer The relayer address
   * @param _ttl The time to live of the message
   */
  function _processQueueChecks(uint32 _domain, address _relayer, uint256 _ttl) internal view {
    if (_domain != DOMAIN) {
      revert EverclearSpoke_ProcessFillViaRelayer_WrongDomain();
    }

    if (_relayer != msg.sender) {
      revert EverclearSpoke_ProcessFillViaRelayer_NotRelayer();
    }

    if (block.timestamp > _ttl) {
      revert EverclearSpoke_ProcessFillViaRelayer_TTLExpired();
    }
  }
}

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

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
    struct OwnableStorage {
        address _owner;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;

    function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
        assembly {
            $.slot := OwnableStorageLocation
        }
    }

    /**
     * @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.
     */
    function __Ownable_init(address initialOwner) internal onlyInitializing {
        __Ownable_init_unchained(initialOwner);
    }

    function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
        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) {
        OwnableStorage storage $ = _getOwnableStorage();
        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 {
        OwnableStorage storage $ = _getOwnableStorage();
        address oldOwner = $._owner;
        $._owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

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

pragma solidity ^0.8.20;

import {IERC1822Proxiable} from "@openzeppelin/contracts/interfaces/draft-IERC1822.sol";
import {ERC1967Utils} from "@openzeppelin/contracts/proxy/ERC1967/ERC1967Utils.sol";
import {Initializable} from "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822Proxiable {
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable
    address private immutable __self = address(this);

    /**
     * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgradeTo(address)`
     * and `upgradeToAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called,
     * while `upgradeToAndCall` will invoke the `receive` function if the second argument is the empty byte string.
     * If the getter returns `"5.0.0"`, only `upgradeToAndCall(address,bytes)` is present, and the second argument must
     * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function
     * during an upgrade.
     */
    string public constant UPGRADE_INTERFACE_VERSION = "5.0.0";

    /**
     * @dev The call is from an unauthorized context.
     */
    error UUPSUnauthorizedCallContext();

    /**
     * @dev The storage `slot` is unsupported as a UUID.
     */
    error UUPSUnsupportedProxiableUUID(bytes32 slot);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        _checkProxy();
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        _checkNotDelegated();
        _;
    }

    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual notDelegated returns (bytes32) {
        return ERC1967Utils.IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data);
    }

    /**
     * @dev Reverts if the execution is not performed via delegatecall or the execution
     * context is not of a proxy with an ERC1967-compliant implementation pointing to self.
     * See {_onlyProxy}.
     */
    function _checkProxy() internal view virtual {
        if (
            address(this) == __self || // Must be called through delegatecall
            ERC1967Utils.getImplementation() != __self // Must be called through an active proxy
        ) {
            revert UUPSUnauthorizedCallContext();
        }
    }

    /**
     * @dev Reverts if the execution is performed via delegatecall.
     * See {notDelegated}.
     */
    function _checkNotDelegated() internal view virtual {
        if (address(this) != __self) {
            // Must not be called through delegatecall
            revert UUPSUnauthorizedCallContext();
        }
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;

    /**
     * @dev Performs an implementation upgrade with a security check for UUPS proxies, and additional setup call.
     *
     * As a security check, {proxiableUUID} is invoked in the new implementation, and the return value
     * is expected to be the implementation slot in ERC1967.
     *
     * Emits an {IERC1967-Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data) private {
        try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
            if (slot != ERC1967Utils.IMPLEMENTATION_SLOT) {
                revert UUPSUnsupportedProxiableUUID(slot);
            }
            ERC1967Utils.upgradeToAndCall(newImplementation, data);
        } catch {
            // The implementation is not UUPS
            revert ERC1967Utils.ERC1967InvalidImplementation(newImplementation);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Nonces.sol)
pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Provides tracking nonces for addresses. Nonces will only increment.
 */
abstract contract NoncesUpgradeable is Initializable {
    /**
     * @dev The nonce used for an `account` is not the expected current nonce.
     */
    error InvalidAccountNonce(address account, uint256 currentNonce);

    /// @custom:storage-location erc7201:openzeppelin.storage.Nonces
    struct NoncesStorage {
        mapping(address account => uint256) _nonces;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Nonces")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant NoncesStorageLocation = 0x5ab42ced628888259c08ac98db1eb0cf702fc1501344311d8b100cd1bfe4bb00;

    function _getNoncesStorage() private pure returns (NoncesStorage storage $) {
        assembly {
            $.slot := NoncesStorageLocation
        }
    }

    function __Nonces_init() internal onlyInitializing {
    }

    function __Nonces_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Returns the next unused nonce for an address.
     */
    function nonces(address owner) public view virtual returns (uint256) {
        NoncesStorage storage $ = _getNoncesStorage();
        return $._nonces[owner];
    }

    /**
     * @dev Consumes a nonce.
     *
     * Returns the current value and increments nonce.
     */
    function _useNonce(address owner) internal virtual returns (uint256) {
        NoncesStorage storage $ = _getNoncesStorage();
        // For each account, the nonce has an initial value of 0, can only be incremented by one, and cannot be
        // decremented or reset. This guarantees that the nonce never overflows.
        unchecked {
            // It is important to do x++ and not ++x here.
            return $._nonces[owner]++;
        }
    }

    /**
     * @dev Same as {_useNonce} but checking that `nonce` is the next valid for `owner`.
     */
    function _useCheckedNonce(address owner, uint256 nonce) internal virtual {
        uint256 current = _useNonce(owner);
        if (nonce != current) {
            revert InvalidAccountNonce(owner, current);
        }
    }
}

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

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     * ```
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.20;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS
    }

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

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

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

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not
     * return address(0) without also returning an error description. Errors are documented using an enum (error type)
     * and a bytes32 providing additional information about the error.
     *
     * If no error is returned, then the address can be used for verification purposes.
     *
     * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length));
        }
    }

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

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) {
        unchecked {
            bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
            // We do not check for an overflow here since the shift operation results in 0 or 1.
            uint8 v = uint8((uint256(vs) >> 255) + 27);
            return tryRecover(hash, v, r, s);
        }
    }

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

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError, bytes32) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS, s);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature, bytes32(0));
        }

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

/**
 * @title AssetUtils
 * @notice Library for asset utility functions
 */
library AssetUtils {
  /**
   * @notice This function translates the _amount in _in decimals
   * to _out decimals
   *
   * @param _in The decimals of the asset in / amount in
   * @param _out The decimals of the target asset
   * @param _amount The value to normalize to the `_out` decimals
   * @return _normalized Normalized decimals.
   */
  function normalizeDecimals(uint8 _in, uint8 _out, uint256 _amount) internal pure returns (uint256 _normalized) {
    if (_in == _out) {
      return _amount;
    }
    // Convert this value to the same decimals as _out
    if (_in < _out) {
      _normalized = _amount * (10 ** (_out - _in));
    } else {
      _normalized = _amount / (10 ** (_in - _out));
    }
  }

  /**
   * @notice Get the hash of an asset
   * @param _asset The address of the asset
   * @param _domain The domain of the asset
   * @return _assetHash The hash of the asset
   */
  function getAssetHash(bytes32 _asset, uint32 _domain) internal pure returns (bytes32 _assetHash) {
    return keccak256(abi.encode(_asset, _domain));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

library Constants {
  // Default normalized decimals for tokens
  uint8 public constant DEFAULT_NORMALIZED_DECIMALS = 18;
  // 1/10 of a basis point denominator
  uint24 public constant DBPS_DENOMINATOR = 100_000;

  // Precomputed hashes (reduce gas costs)
  bytes32 public constant GATEWAY_HASH = keccak256(abi.encode('GATEWAY'));
  bytes32 public constant MAILBOX_HASH = keccak256(abi.encode('MAILBOX'));
  bytes32 public constant LIGHTHOUSE_HASH = keccak256(abi.encode('LIGHTHOUSE'));
  bytes32 public constant WATCHTOWER_HASH = keccak256(abi.encode('WATCHTOWER'));
  bytes32 public constant MAX_FEE_HASH = keccak256(abi.encode('MAX_FEE'));
  bytes32 public constant INTENT_TTL_HASH = keccak256(abi.encode('INTENT_TTL'));

  // Default gas limit for external calls
  uint256 public constant DEFAULT_GAS_LIMIT = 50_000;
  // Maximum calldata size for external calls
  uint256 public constant MAX_CALLDATA_SIZE = 50_000;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {IEverclear} from 'interfaces/common/IEverclear.sol';

library MessageLib {
  /*//////////////////////////////////////////////////////////////
                            ENUMS
  //////////////////////////////////////////////////////////////*/

  /**
   * @dev Enum for message types
   * INTENT: Intent message type
   * FILL: Fill message type
   * SETTLEMENT: Settlement message type
   * VAR_UPDATE: Variable update message type
   */
  enum MessageType {
    INTENT,
    FILL,
    SETTLEMENT,
    VAR_UPDATE
  }

  /*//////////////////////////////////////////////////////////////
                      GENERAL PURPOSE FUNCTIONS
  //////////////////////////////////////////////////////////////*/

  /**
   * @dev Formats a message with a message type and data
   * @param _messageType The message type
   * @param _data The data to send in the message
   * @return _message The formatted message
   */
  function formatMessage(MessageType _messageType, bytes memory _data) internal pure returns (bytes memory _message) {
    _message = abi.encode(uint8(_messageType), _data);
  }

  /**
   * @dev Parses a message into its message type and data
   * @param _message The message to parse
   * @return _messageType The message type
   * @return _data The data in the message
   */
  function parseMessage(
    bytes memory _message
  ) internal pure returns (MessageType _messageType, bytes memory _data) {
    uint8 _msgTypeNumber;
    (_msgTypeNumber, _data) = abi.decode(_message, (uint8, bytes));
    _messageType = MessageType(_msgTypeNumber);
  }

  /*//////////////////////////////////////////////////////////////
                        MESSAGE FORMATTING
  //////////////////////////////////////////////////////////////*/

  /**
   * @dev Formats an intent message
   * @param _intents Array of intents
   * @return _message The formatted intent message
   */
  function formatIntentMessageBatch(
    IEverclear.Intent[] memory _intents
  ) internal pure returns (bytes memory _message) {
    _message = formatMessage(MessageType.INTENT, abi.encode(_intents));
  }

  /**
   * @dev Formats a fill message
   * @param _fillMessages Array of fill messages
   * @return _message The formatted fill message
   */
  function formatFillMessageBatch(
    IEverclear.FillMessage[] memory _fillMessages
  ) internal pure returns (bytes memory _message) {
    _message = formatMessage(MessageType.FILL, abi.encode(_fillMessages));
  }

  /**
   * @dev Formats a settlement message
   * @param _settlementMessages Array of settlement messages
   * @return _message The formatted settlement message
   */
  function formatSettlementBatch(
    IEverclear.Settlement[] memory _settlementMessages
  ) internal pure returns (bytes memory _message) {
    _message = formatMessage(MessageType.SETTLEMENT, abi.encode(_settlementMessages));
  }

  /**
   * @dev Formats a var update message
   * @param _data The data (encoded variable)
   * @return _message The formatted var update message
   */
  function formatVarUpdateMessage(
    bytes memory _data
  ) internal pure returns (bytes memory _message) {
    _message = formatMessage(MessageType.VAR_UPDATE, _data);
  }

  /**
   * @dev Formats an address updating message (Mailbox, SecurityModule, Gateway)
   * @param _updateVariable the name of the variable being updated
   * @param _address The new address
   * @return _message The formatted address update message
   */
  function formatAddressUpdateMessage(
    bytes32 _updateVariable,
    bytes32 _address
  ) internal pure returns (bytes memory _message) {
    _message = formatVarUpdateMessage(abi.encode(_updateVariable, abi.encode(_address)));
  }

  /**
   * @dev Formats a uint updating message (MaxRoutersFee)
   * @param _updateVariable the hashed name of the variable being updated
   * @param _value The new value
   * @return _message The formatted uint update message
   */
  function formatUintUpdateMessage(
    bytes32 _updateVariable,
    uint256 _value
  ) internal pure returns (bytes memory _message) {
    _message = formatVarUpdateMessage(abi.encode(_updateVariable, abi.encode(_value)));
  }

  /*//////////////////////////////////////////////////////////////
                          MESSAGE PARSING
  //////////////////////////////////////////////////////////////*/

  /**
   * @dev Parses an intent message
   * @param _data The intent message data
   * @return _intents Array of decoded intents
   */
  function parseIntentMessageBatch(
    bytes memory _data
  ) internal pure returns (IEverclear.Intent[] memory _intents) {
    (_intents) = abi.decode(_data, (IEverclear.Intent[]));
  }

  /**
   * @dev Parses a fill message
   * @param _data The packed fill message data
   * @return _fillMessages Array of fill messages
   */
  function parseFillMessageBatch(
    bytes memory _data
  ) internal pure returns (IEverclear.FillMessage[] memory _fillMessages) {
    (_fillMessages) = abi.decode(_data, (IEverclear.FillMessage[]));
  }

  /**
   * @dev Parses a settlement message
   * @param _data The packed settlement message data
   * @return _settlementMessages Array of settlement messages
   */
  function parseSettlementBatch(
    bytes memory _data
  ) internal pure returns (IEverclear.Settlement[] memory _settlementMessages) {
    (_settlementMessages) = abi.decode(_data, (IEverclear.Settlement[]));
  }

  /**
   * @dev Parses a var update message
   * @param _data The abi encoded variable
   * @return _updateVariable The hashed name of the variable being updated
   * @return _varData The encoded variable data
   */
  function parseVarUpdateMessage(
    bytes memory _data
  ) internal pure returns (bytes32 _updateVariable, bytes memory _varData) {
    (_updateVariable, _varData) = abi.decode(_data, (bytes32, bytes));
  }

  /**
   * @dev Parses an address update message
   * @param _data The abi encoded address
   * @return _address The decoded address
   */
  function parseAddressUpdateMessage(
    bytes memory _data
  ) internal pure returns (bytes32 _address) {
    _address = abi.decode(_data, (bytes32));
  }

  /**
   * @dev Parses a uint update message
   * @param _data The abi encoded uint
   * @return _value The decoded uint
   */
  function parseUintUpdateMessage(
    bytes memory _data
  ) internal pure returns (uint256 _value) {
    _value = abi.decode(_data, (uint256));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {IEverclear} from 'interfaces/common/IEverclear.sol';

/**
 * @title QueueLib
 * @notice Library for managing queues
 */
library QueueLib {
  /**
   * @notice Structure for the IntentQueue
   * @dev first should always be initialized to 1
   * @param first The first position in the queue
   * @param last The last position in the queue
   * @param queue The queue of intent ids
   */
  struct IntentQueue {
    uint256 first;
    uint256 last;
    mapping(uint256 _position => bytes32 _intentId) queue;
  }

  /**
   * @notice Structure for the FillQueue
   * @dev Member first should always be initialized to 1
   * @param first The first position in the queue
   * @param last The last position in the queue
   * @param queue The queue of fill messages
   */
  struct FillQueue {
    uint256 first;
    uint256 last;
    mapping(uint256 _position => IEverclear.FillMessage _fillMessage) queue;
  }

  /**
   * @notice Thrown when the queue is empty
   */
  error Queue_EmptyQueue();

  /**
   * @notice Enqueue an intent id to the IntentQueue
   * @param _queue The IntentQueue
   * @param _intentId The intent id to enqueue
   */
  function enqueueIntent(IntentQueue storage _queue, bytes32 _intentId) internal {
    _queue.last += 1;
    _queue.queue[_queue.last] = _intentId;
  }

  /**
   * @notice Enqueue a fill message to the FillQueue
   * @param _queue The FillQueue
   * @param _fillMessage The fill message to enqueue
   */
  function enqueueFill(FillQueue storage _queue, IEverclear.FillMessage memory _fillMessage) internal {
    _queue.last += 1;
    _queue.queue[_queue.last] = _fillMessage;
  }

  /**
   * @notice Dequeue an intent id from the IntentQueue
   * @param _queue The IntentQueue
   * @return _intentId The dequeued intent id
   */
  function dequeueIntent(
    IntentQueue storage _queue
  ) internal returns (bytes32 _intentId) {
    // non-empty queue check
    if (_queue.last < _queue.first) revert Queue_EmptyQueue();

    _intentId = _queue.queue[_queue.first];

    delete _queue.queue[_queue.first];
    _queue.first += 1;
  }

  /**
   * @notice Dequeue a fill message from the FillQueue
   * @param _queue The FillQueue
   * @return _fillMessage The dequeued fill message
   */
  function dequeueFill(
    FillQueue storage _queue
  ) internal returns (IEverclear.FillMessage memory _fillMessage) {
    // non-empty queue
    if (_queue.last < _queue.first) revert Queue_EmptyQueue();

    _fillMessage = _queue.queue[_queue.first];

    delete _queue.queue[_queue.first];
    _queue.first += 1;
  }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity 0.8.25;

/**
 * @title TypeCasts
 * @notice Library for type casts
 */
library TypeCasts {
  // alignment preserving cast
  /**
   * @notice Cast an address to a bytes32
   * @param _addr The address to cast
   */
  function toBytes32(
    address _addr
  ) internal pure returns (bytes32) {
    return bytes32(uint256(uint160(_addr)));
  }

  // alignment preserving cast
  /**
   * @notice Cast a bytes32 to an address
   * @param _buf The bytes32 to cast
   */
  function toAddress(
    bytes32 _buf
  ) internal pure returns (address) {
    return address(uint160(uint256(_buf)));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

library Constants {
  // Reserved gas required after the calldata execution
  uint256 public constant EXECUTE_CALLDATA_RESERVE_GAS = 10_000;
  // Bytes to copy from the calldata
  uint16 public constant DEFAULT_COPY_BYTES = 256;
  // The empty hash
  bytes32 public constant EMPTY_HASH = keccak256('');
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

/**
 * @title IEverclear
 * @notice Common interface for EverclearHub and EverclearSpoke
 */
interface IEverclear {
  /*//////////////////////////////////////////////////////////////
                                ENUMS
    //////////////////////////////////////////////////////////////*/
  /**
   * @notice Enum representing statuses of an intent
   */
  enum IntentStatus {
    NONE, // 0
    ADDED, // 1
    DEPOSIT_PROCESSED, // 2
    FILLED, // 3
    ADDED_AND_FILLED, // 4
    INVOICED, // 5
    SETTLED, // 6
    SETTLED_AND_MANUALLY_EXECUTED, // 7
    UNSUPPORTED, // 8
    UNSUPPORTED_RETURNED // 9

  }

  /**
   * @notice Enum representing asset strategies
   */
  enum Strategy {
    DEFAULT,
    XERC20
  }

  /*///////////////////////////////////////////////////////////////
                            STRUCTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice The structure of an intent
   * @param initiator The address of the intent initiator
   * @param receiver The address of the intent receiver
   * @param inputAsset The address of the intent asset on origin
   * @param outputAsset The address of the intent asset on destination
   * @param maxFee The maximum fee that can be taken by solvers
   * @param origin The origin chain of the intent
   * @param destinations The possible destination chains of the intent
   * @param nonce The nonce of the intent
   * @param timestamp The timestamp of the intent
   * @param ttl The time to live of the intent
   * @param amount The amount of the intent asset normalized to 18 decimals
   * @param data The data of the intent
   */
  struct Intent {
    bytes32 initiator;
    bytes32 receiver;
    bytes32 inputAsset;
    bytes32 outputAsset;
    uint24 maxFee;
    uint32 origin;
    uint64 nonce;
    uint48 timestamp;
    uint48 ttl;
    uint256 amount;
    uint32[] destinations;
    bytes data;
  }

  /**
   * @notice The structure of a fill message
   * @param intentId The ID of the intent
   * @param solver The address of the intent solver in bytes32 format
   * @param initiator The address of the intent initiator
   * @param fee The total fee of the expressed in dbps, represents the solver fee plus the sum of protocol fees for the token
   * @param executionTimestamp The execution timestamp of the intent
   */
  struct FillMessage {
    bytes32 intentId;
    bytes32 solver;
    bytes32 initiator;
    uint24 fee;
    uint48 executionTimestamp;
  }

  /**
   * @notice The structure of a settlement
   * @param intentId The ID of the intent
   * @param amount The amount of the asset
   * @param asset The address of the asset
   * @param recipient The address of the recipient
   * @param updateVirtualBalance If set to true, the settlement will not be transferred to the recipient in spoke domain and the virtual balance will be increased
   */
  struct Settlement {
    bytes32 intentId;
    uint256 amount;
    bytes32 asset;
    bytes32 recipient;
    bool updateVirtualBalance;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

/**
 * @title IMessageReceiver
 * @notice Interface for the transport layer communication with the message receiver
 */
interface IMessageReceiver {
  /*///////////////////////////////////////////////////////////////
                              LOGIC
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Receive a message from the transport layer
   * @param _message The message to receive encoded as bytes
   * @dev This function should be called by the the gateway contract
   */
  function receiveMessage(
    bytes calldata _message
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';

/**
 * @title IPermit2
 * @notice Interface for permit2
 */
interface IPermit2 {
  /*///////////////////////////////////////////////////////////////
                                STRUCTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Struct for token and amount in a permit message
   * @param token The token to transfer
   * @param amount The amount to transfer
   */
  struct TokenPermissions {
    IERC20 token;
    uint256 amount;
  }

  /**
   * @notice Struct for the permit2 message
   * @param permitted The permitted token and amount
   * @param nonce The unique identifier for this permit
   * @param deadline The expiration for this permit
   */
  struct PermitTransferFrom {
    TokenPermissions permitted;
    uint256 nonce;
    uint256 deadline;
  }

  /**
   * @notice Struct for the transfer details for permitTransferFrom()
   * @param to The recipient of the tokens
   * @param requestedAmount The amount to transfer
   */
  struct SignatureTransferDetails {
    address to;
    uint256 requestedAmount;
  }

  /*///////////////////////////////////////////////////////////////
                                LOGIC
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Consume a permit2 message and transfer tokens
   * @param permit The permit message
   * @param transferDetails The transfer details
   * @param owner The owner of the tokens
   * @param signature The signature of the permit
   */
  function permitTransferFrom(
    PermitTransferFrom calldata permit,
    SignatureTransferDetails calldata transferDetails,
    address owner,
    bytes calldata signature
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

/**
 * @title ISettlementModule
 * @notice Interface for the base settlement module
 */
interface ISettlementModule {
  /*///////////////////////////////////////////////////////////////
                              LOGIC
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Handle a mint action for a specific strategy
   * @param _asset The address of the asset to mint
   * @param _recipient The recipient of the minted assets
   * @param _fallbackRecipient The fallback recipient of the minted assets (in case of failure)
   * @param _amount The amount to mint
   * @param _data Extra data needed by some modules
   * @return _success The outcome of the minting strategy
   * @dev In case of failure, the parent module will handle the operation accordingly
   */
  function handleMintStrategy(
    address _asset,
    address _recipient,
    address _fallbackRecipient,
    uint256 _amount,
    bytes calldata _data
  ) external returns (bool _success);

  /**
   * @notice Handle a burn action for a specific strategy
   * @param _asset The address of the asset to burn
   * @param _user The user whose assets are being burned
   * @param _amount The amount to burn
   * @param _data Extra data needed by some modules
   * @dev In case of failure, the `newIntent` flow will revert
   */
  function handleBurnStrategy(address _asset, address _user, uint256 _amount, bytes calldata _data) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {IEverclear} from 'interfaces/common/IEverclear.sol';
import {ISettlementModule} from 'interfaces/common/ISettlementModule.sol';

import {ISpokeStorageV4} from './ISpokeStorageV4.sol';

/**
 * @title IEverclearSpoke
 * @notice Interface for the EverclearSpoke contract
 */
interface IEverclearSpokeV4 is ISpokeStorageV4 {
  /*///////////////////////////////////////////////////////////////
                              STRUCTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Parameters needed to execute a permit2
   * @param nonce The nonce of the permit
   * @param deadline The deadline of the permit
   * @param signature The signature of the permit
   */
  struct Permit2Params {
    uint256 nonce;
    uint256 deadline;
    bytes signature;
  }
  /*///////////////////////////////////////////////////////////////
                              EVENTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice emitted when a new intent is added on origin
   * @param _intentId The ID of the intent
   * @param _queueIdx The index of the intent in the IntentQueue
   * @param _intent The intent object
   */
  event IntentAdded(bytes32 indexed _intentId, uint256 _queueIdx, Intent _intent);

  /**
   * @notice emitted when an intent is filled on destination
   * @param _intentId The ID of the intent
   * @param _solver The address of the intent solver
   * @param _totalFeeDBPS The total amount of fee deducted from the transferred amount
   * @param _queueIdx The index of the FillMessage in the FillQueue
   * @param _intent The full intent object
   */
  event IntentFilled(
    bytes32 indexed _intentId, address indexed _solver, uint256 _totalFeeDBPS, uint256 _queueIdx, Intent _intent
  );

  /**
   * @notice emitted when solver (or anyone) deposits an asset in the EverclearSpoke
   * @param _depositant The address of the depositant
   * @param _asset The address of the deposited asset
   * @param _amount The amount of the deposited asset
   */
  event Deposited(address indexed _depositant, address indexed _asset, uint256 _amount);

  /**
   * @notice emitted when solver (or anyone) withdraws an asset from the EverclearSpoke
   * @param _withdrawer The address of the withdrawer
   * @param _asset The address of the withdrawn asset
   * @param _amount The amount of the withdrawn asset
   */
  event Withdrawn(address indexed _withdrawer, address indexed _asset, uint256 _amount);

  /**
   * @notice Emitted when the intent queue is processed
   * @param _messageId The ID of the message
   * @param _firstIdx The first index of the queue to be processed
   * @param _lastIdx The last index of the queue to be processed
   * @param _quote The quote amount
   */
  event IntentQueueProcessed(bytes32 indexed _messageId, uint256 _firstIdx, uint256 _lastIdx, uint256 _quote);

  /**
   * @notice Emitted when the fill queue is processed
   * @param _messageId The ID of the message
   * @param _firstIdx The first index of the queue to be processed
   * @param _lastIdx The last index of the queue to be processed
   * @param _quote The quote amount
   */
  event FillQueueProcessed(bytes32 indexed _messageId, uint256 _firstIdx, uint256 _lastIdx, uint256 _quote);

  /**
   * @notice Emitted when an external call is executed
   * @param _intentId The ID of the intent
   * @param _returnData The return data of the call
   */
  event ExternalCalldataExecuted(bytes32 indexed _intentId, bytes _returnData);

  /**
   * @notice Emitted when feeAdapter is updated
   * @param _newFeeAdapter The new fee adapter
   */
  event FeeAdapterUpdated(address _newFeeAdapter);

  /*///////////////////////////////////////////////////////////////
                              ERRORS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Thrown when the intent is already filled
   * @param _intentId The id of the intent which is being tried to fill
   */
  error EverclearSpoke_FillIntent_InvalidStatus(bytes32 _intentId);

  /**
   * @notice Thrown when trying to fill an expired intent
   * @param _intentId The id of the intent which is being tried to fill
   */
  error EverclearSpoke_FillIntent_IntentExpired(bytes32 _intentId);

  /**
   * @notice Thrown when calling newIntent with invalid intent parameters
   */
  error EverclearSpoke_NewIntent_InvalidIntent();

  /**
   * @notice Thrown when the maxFee is exceeded
   * @param _fee The fee chosen by the user
   * @param _maxFee The maximum possible fee
   */
  error EverclearSpoke_NewIntent_MaxFeeExceeded(uint256 _fee, uint24 _maxFee);

  /**
   * @notice Thrown when the intent amount is zero
   */
  error EverclearSpoke_NewIntent_ZeroAmount();

  /**
   * @notice Thrown when the solver doesnt have sufficient funds to fill an intent
   * @param _requested The amount of tokens needed to fill the intent
   * @param _available The amount of tokens the solver has deposited in the `EverclearSpoke`
   */
  error EverclearSpoke_FillIntent_InsufficientFunds(uint256 _requested, uint256 _available);

  /**
   * @notice Thrown when the fee exceeds the maximum fee
   * @param _fee The fee chosen by the solver
   * @param _maxFee The actual fee the intent solver set for his intent
   */
  error EverclearSpoke_FillIntent_MaxFeeExceeded(uint256 _fee, uint24 _maxFee);

  /**
   * @notice Thrown when the intent calldata exceeds the limit
   */
  error EverclearSpoke_NewIntent_CalldataExceedsLimit();

  /**
   * @notice Thrown when a signature signer does not match the expected address
   */
  error EverclearSpoke_InvalidSignature();

  /**
   * @notice Thrown when the domain does not match the expected domain
   */
  error EverclearSpoke_ProcessFillViaRelayer_WrongDomain();

  /**
   * @notice Thrown when the relayer address does not match the msg.sender
   */
  error EverclearSpoke_ProcessFillViaRelayer_NotRelayer();

  /**
   * @notice Thrown when the TTL of the message has expired
   */
  error EverclearSpoke_ProcessFillViaRelayer_TTLExpired();

  /**
   * @notice Thrown when processing the intent queue and the intent is not found in the position specified in the parameter
   * @param _intentId The id of the intent being processed
   * @param _position The position specified by the queue processor
   */
  error EverclearSpoke_ProcessIntentQueue_NotFound(bytes32 _intentId, uint256 _position);

  /**
   * @notice Thrown when trying to execute the calldata of an intent with invalid status
   * @param _intentId The id of the intent whose calldata is trying to be executed
   */
  error EverclearSpoke_ExecuteIntentCalldata_InvalidStatus(bytes32 _intentId);

  /**
   * @notice Thrown when the external call failed on executeIntentCalldata
   */
  error EverclearSpoke_ExecuteIntentCalldata_ExternalCallFailed();

  /*///////////////////////////////////////////////////////////////
                              LOGIC
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Pauses the contract
   * @dev only the lighthouse and watchtower can pause the contract
   */
  function pause() external;

  /**
   * @notice Unpauses the contract
   * @dev only the lighthouse and watchtower can unpause the contract
   */
  function unpause() external;

  /**
   * @notice Sets a minting / burning strategy for an asset
   * @param _asset The asset address
   * @param _strategy The strategy id (see `enum Strategy`)
   */
  function setStrategyForAsset(address _asset, IEverclear.Strategy _strategy) external;

  /**
   * @notice Sets a module for a strategy
   * @param _strategy The strategy id (see `enum Strategy`)
   * @param _module The module contract
   */
  function setModuleForStrategy(IEverclear.Strategy _strategy, ISettlementModule _module) external;

  /**
   * @notice Updates the security module
   * @param _newSecurityModule The address of the new security module
   */
  function updateSecurityModule(
    address _newSecurityModule
  ) external;

  /**
   * @notice Update the fee adapter
   * @param _newFeeAdapter The address of the new fee adapter
   */
  function updateFeeAdapter(
    address _newFeeAdapter
  ) external;

  /**
   * @notice Initialize the EverclearSpoke contract
   * @param _feeAdapter The fee adapter
   */
  function initialize(
    address _feeAdapter
  ) external;

  /**
   * @notice Creates a new intent
   * @param _destinations The possible destination chains of the intent
   * @param _receiver The destinantion address of the intent
   * @param _inputAsset The asset address on origin
   * @param _outputAsset The asset address on destination
   * @param _amount The amount of the asset
   * @param _maxFee The maximum fee that can be taken by solvers
   * @param _ttl The time to live of the intent
   * @param _data The data of the intent
   * @return _intentId The ID of the intent
   * @return _intent The intent object
   */
  function newIntent(
    uint32[] memory _destinations,
    bytes32 _receiver,
    address _inputAsset,
    bytes32 _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data
  ) external returns (bytes32 _intentId, Intent calldata _intent);

  /**
   * @notice Creates a new intent
   * @param _destinations The possible destination chains of the intent
   * @param _receiver The destinantion address of the intent
   * @param _inputAsset The asset address on origin
   * @param _outputAsset The asset address on destination
   * @param _amount The amount of the asset
   * @param _maxFee The maximum fee that can be taken by solvers
   * @param _ttl The time to live of the intent
   * @param _data The data of the intent
   * @return _intentId The ID of the intent
   * @return _intent The intent object
   */
  function newIntent(
    uint32[] memory _destinations,
    address _receiver,
    address _inputAsset,
    address _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data
  ) external returns (bytes32 _intentId, Intent calldata _intent);

  /**
   * @notice Creates a new intent with permit2
   * @param _destinations The possible destination chains of the intent
   * @param _receiver The destinantion address of the intent
   * @param _inputAsset The asset address on origin
   * @param _outputAsset The asset address on destination
   * @param _amount The amount of the asset
   * @param _maxFee The maximum fee that can be taken by solvers
   * @param _ttl The time to live of the intent
   * @param _data The data of the intent
   * @param _permit2Params The parameters needed to execute a permit2
   * @return _intentId The ID of the intent
   * @return _intent The intent object
   */
  function newIntent(
    uint32[] memory _destinations,
    address _receiver,
    address _inputAsset,
    address _outputAsset,
    uint256 _amount,
    uint24 _maxFee,
    uint48 _ttl,
    bytes calldata _data,
    Permit2Params calldata _permit2Params
  ) external returns (bytes32 _intentId, Intent calldata _intent);

  /**
   * @notice fills an intent
   * @param _intent The intent structure
   * @param _fee The total fee, expressed in dbps, represents the solver fee plus the sum of protocol fees for the token
   * @return _fillMessage The enqueued fill message
   */
  function fillIntent(Intent calldata _intent, uint24 _fee) external returns (FillMessage calldata _fillMessage);

  /**
   * @notice Allows a relayer to fill an intent for a solver
   * @param _solver The address of the solver
   * @param _intent The intent structure
   * @param _nonce The nonce of the signature
   * @param _fee The total fee, expressed in dbps, represents the solver fee plus the sum of protocol fees for the token
   * @param _signature The solver signature
   * @return _fillMessage The enqueued fill message
   */
  function fillIntentForSolver(
    address _solver,
    Intent calldata _intent,
    uint256 _nonce,
    uint24 _fee,
    bytes calldata _signature
  ) external returns (FillMessage memory _fillMessage);

  /**
   * @notice Process the intent queue messages to send a batched message to the transport layer
   * @param _intents The intents to process, must respect the intent queue order
   */
  function processIntentQueue(
    Intent[] calldata _intents
  ) external payable;

  /**
   * @notice Process the fill queue messages to send a batched message to the transport layer
   * @param _amount The amount of messages to process and batch
   */
  function processFillQueue(
    uint32 _amount
  ) external payable;

  /**
   * @notice Process the intent queue messages to send a batched message to the transport layer (via relayer)
   * @param _domain The domain of the message
   * @param _intents The intents to process, must respect the intent queue order
   * @param _relayer The address of the relayer
   * @param _ttl The time to live of the message
   * @param _nonce The nonce of the signature
   * @param _bufferDBPS The buffer in DBPS to add to the fee
   * @param _signature The signature of the data
   */
  function processIntentQueueViaRelayer(
    uint32 _domain,
    Intent[] calldata _intents,
    address _relayer,
    uint256 _ttl,
    uint256 _nonce,
    uint256 _bufferDBPS,
    bytes calldata _signature
  ) external;

  /**
   * @notice Process the fill queue messages to send a batched message to the transport layer (via relayer)
   * @param _domain The domain of the message
   * @param _amount The amount of messages to process and batch
   * @param _relayer The address of the relayer
   * @param _ttl The time to live of the message
   * @param _nonce The nonce of the signature
   * @param _bufferDBPS The buffer in DBPS to add to the fee
   * @param _signature The signature of the data
   */
  function processFillQueueViaRelayer(
    uint32 _domain,
    uint32 _amount,
    address _relayer,
    uint256 _ttl,
    uint256 _nonce,
    uint256 _bufferDBPS,
    bytes calldata _signature
  ) external;

  /**
   * @notice deposits an asset into the EverclearSpoke
   * @dev should be only called by solvers but it is permissionless, the funds will be used by the solvers to execute intents
   * @param _asset The address of the asset
   * @param _amount The amount of the asset
   */
  function deposit(address _asset, uint256 _amount) external;

  /**
   * @notice withdraws an asset from the EverclearSpoke
   * @dev can be called by solvers or users
   * @param _asset The address of the asset
   * @param _amount The amount of the asset
   */
  function withdraw(address _asset, uint256 _amount) external;

  /**
   * @notice Updates the gateway
   * @param _newGateway The address of the new gateway
   */
  function updateGateway(
    address _newGateway
  ) external;

  /**
   * @notice Updates the message receiver
   * @param _newMessageReceiver The address of the new message receiver
   */
  function updateMessageReceiver(
    address _newMessageReceiver
  ) external;

  /**
   * @notice Updates the max gas limit used for outgoing messages
   * @param _newGasLimit The new gas limit
   */
  function updateMessageGasLimit(
    uint256 _newGasLimit
  ) external;

  /**
   * @notice Executes the calldata of an intent
   * @param _intent The intent object
   */
  function executeIntentCalldata(
    Intent calldata _intent
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {IGateway} from 'interfaces/common/IGateway.sol';

/**
 * @title ISpokeGateway
 * @notice Interface for the SpokeGateway contract, sends and receives messages to and from the transport layer
 */
interface ISpokeGateway is IGateway {
  /*///////////////////////////////////////////////////////////////
                              LOGIC
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Initialize Gateway variables
   * @param _owner The address of the owner
   * @param _mailbox The address of the local mailbox
   * @param _receiver The address of the local message receiver (EverclearSpoke)
   * @param _interchainSecurityModule The address of the chosen interchain security module
   * @param _everclearId The id of the Everclear domain
   * @param _hubGateway The bytes32 representation of the Hub gateway
   * @dev Only called once on initialization
   */
  function initialize(
    address _owner,
    address _mailbox,
    address _receiver,
    address _interchainSecurityModule,
    uint32 _everclearId,
    bytes32 _hubGateway
  ) external;

  /*///////////////////////////////////////////////////////////////
                              VIEWS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Returns the Everclear hub chain id
   * @return _hubChainId The Everclear chain id
   */
  function EVERCLEAR_ID() external view returns (uint32 _hubChainId);

  /**
   * @notice Returns the `HubGateway` gateway address
   * @return _hubGateway The `HubGateway` address
   */
  function EVERCLEAR_GATEWAY() external view returns (bytes32 _hubGateway);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {QueueLib} from 'contracts/common/QueueLib.sol';

import {IPermit2} from 'interfaces/common/IPermit2.sol';

import {ISettlementModule} from 'interfaces/common/ISettlementModule.sol';
import {ICallExecutor} from 'interfaces/intent/ICallExecutor.sol';
import {ISpokeGateway} from 'interfaces/intent/ISpokeGateway.sol';
import {ISpokeStorageV4} from 'interfaces/intent/ISpokeStorageV4.sol';

/**
 * @title SpokeStorage
 * @notice Storage layout and modifiers for the `EverclearSpoke`
 */
abstract contract SpokeStorageV4 is ISpokeStorageV4 {
  /// @inheritdoc ISpokeStorageV4
  bytes32 public constant FILL_INTENT_FOR_SOLVER_TYPEHASH = keccak256(
    'function fillIntentForSolver(address _solver, Intent calldata _intent, uint256 _nonce, uint24 _fee, bytes memory _signature)'
  );

  /// @inheritdoc ISpokeStorageV4
  bytes32 public constant PROCESS_INTENT_QUEUE_VIA_RELAYER_TYPEHASH = keccak256(
    'function processIntentQueueViaRelayer(uint32 _domain, Intent[] memory _intents, address _relayer, uint256 _ttl, uint256 _nonce, uint256 _bufferDBPS, bytes memory _signature)'
  );

  /// @inheritdoc ISpokeStorageV4
  bytes32 public constant PROCESS_FILL_QUEUE_VIA_RELAYER_TYPEHASH = keccak256(
    'function processFillQueueViaRelayer(uint32 _domain, uint32 _amount, address _relayer, uint256 _ttl, uint256 _nonce, uint256 _bufferDBPS, bytes memory _signature)'
  );

  /// @inheritdoc ISpokeStorageV4
  IPermit2 public constant PERMIT2 = IPermit2(0x000000000022D473030F116dDEE9F6B43aC78BA3);

  /// @inheritdoc ISpokeStorageV4
  uint32 public EVERCLEAR;

  /// @inheritdoc ISpokeStorageV4
  uint32 public DOMAIN;

  /// @inheritdoc ISpokeStorageV4
  address public lighthouse;

  /// @inheritdoc ISpokeStorageV4
  address public watchtower;

  /// @inheritdoc ISpokeStorageV4
  address public messageReceiver;

  /// @inheritdoc ISpokeStorageV4
  ISpokeGateway public gateway;

  /// @inheritdoc ISpokeStorageV4
  ICallExecutor public callExecutor;

  /// @inheritdoc ISpokeStorageV4
  bool public paused;

  /// @inheritdoc ISpokeStorageV4
  uint64 public nonce;

  /// @inheritdoc ISpokeStorageV4
  uint256 public messageGasLimit;

  /// @inheritdoc ISpokeStorageV4
  mapping(bytes32 _asset => mapping(bytes32 _user => uint256 _amount)) public balances;

  /// @inheritdoc ISpokeStorageV4
  mapping(bytes32 _intentId => IntentStatus status) public status;

  /// @inheritdoc ISpokeStorageV4
  mapping(address _asset => Strategy _strategy) public strategies;

  /// @inheritdoc ISpokeStorageV4
  mapping(Strategy _strategy => ISettlementModule _module) public modules;

  /**
   * @notice The intent queue
   */
  QueueLib.IntentQueue public intentQueue;

  /**
   * @notice The fill queue
   */
  QueueLib.FillQueue public fillQueue;

  /**
   * **********************  FeeAdapter Upgrade  **********************
   */
  address public feeAdapter;

  /**
   * @notice Checks that the address is valid
   */
  modifier validAddress(
    address _address
  ) {
    if (_address == address(0)) {
      revert EverclearSpoke_ZeroAddress();
    }
    _;
  }

  /**
   * @notice Checks that the local domain is included in the destinations
   * @param _intent The intent to check
   */
  modifier validDestination(
    Intent calldata _intent
  ) {
    // when it's an xcall executable, destinations.length is always 1
    if (_intent.destinations[0] != DOMAIN) {
      revert EverclearSpoke_WrongDestination();
    }
    _;
  }

  /**
   * @notice Checks when processing a queue that the amount is valid for the queue being processed
   * @param _first The first index of the queue
   * @param _last The last index of the queue
   * @param _amount The amount to process
   */
  modifier validQueueAmount(uint256 _first, uint256 _last, uint256 _amount) {
    if (_amount == 0) {
      revert EverclearSpoke_ProcessQueue_ZeroAmount();
    }

    if (_first + _amount - 1 > _last) {
      revert EverclearSpoke_ProcessQueue_InvalidAmount(_first, _last, _amount);
    }

    _;
  }

  /**
   * @notice Checks that the contract is not paused
   */
  modifier whenNotPaused() {
    if (paused) {
      revert EverclearSpoke_Paused();
    }
    _;
  }

  /**
   * @notice Checks that the caller has access to pause the contract
   */
  modifier hasPauseAccess() {
    if (msg.sender != lighthouse && msg.sender != watchtower) {
      revert EverclearSpoke_Pause_NotAuthorized();
    }
    _;
  }

  /**
   * @notice Checks the caller is the fee adapter
   */
  modifier onlyFeeAdapter() {
    if (msg.sender != feeAdapter) {
      revert EverclearSpoke_FeeAdapter_NotAuthorized();
    }
    _;
  }
}

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

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    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 v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.20;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Utils.sol)

pragma solidity ^0.8.20;

import {IBeacon} from "../beacon/IBeacon.sol";
import {Address} from "../../utils/Address.sol";
import {StorageSlot} from "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 */
library ERC1967Utils {
    // We re-declare ERC-1967 events here because they can't be used directly from IERC1967.
    // This will be fixed in Solidity 0.8.21. At that point we should remove these events.
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Emitted when the beacon is changed.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev The `implementation` of the proxy is invalid.
     */
    error ERC1967InvalidImplementation(address implementation);

    /**
     * @dev The `admin` of the proxy is invalid.
     */
    error ERC1967InvalidAdmin(address admin);

    /**
     * @dev The `beacon` of the proxy is invalid.
     */
    error ERC1967InvalidBeacon(address beacon);

    /**
     * @dev An upgrade function sees `msg.value > 0` that may be lost.
     */
    error ERC1967NonPayable();

    /**
     * @dev Returns the current implementation address.
     */
    function getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        if (newImplementation.code.length == 0) {
            revert ERC1967InvalidImplementation(newImplementation);
        }
        StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Performs implementation upgrade with additional setup call if data is nonempty.
     * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected
     * to avoid stuck value in the contract.
     *
     * Emits an {IERC1967-Upgraded} event.
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);

        if (data.length > 0) {
            Address.functionDelegateCall(newImplementation, data);
        } else {
            _checkNonPayable();
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Returns the current admin.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using
     * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        if (newAdmin == address(0)) {
            revert ERC1967InvalidAdmin(address(0));
        }
        StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {IERC1967-AdminChanged} event.
     */
    function changeAdmin(address newAdmin) internal {
        emit AdminChanged(getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is the keccak-256 hash of "eip1967.proxy.beacon" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Returns the current beacon.
     */
    function getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        if (newBeacon.code.length == 0) {
            revert ERC1967InvalidBeacon(newBeacon);
        }

        StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon;

        address beaconImplementation = IBeacon(newBeacon).implementation();
        if (beaconImplementation.code.length == 0) {
            revert ERC1967InvalidImplementation(beaconImplementation);
        }
    }

    /**
     * @dev Change the beacon and trigger a setup call if data is nonempty.
     * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected
     * to avoid stuck value in the contract.
     *
     * Emits an {IERC1967-BeaconUpgraded} event.
     *
     * CAUTION: Invoking this function has no effect on an instance of {BeaconProxy} since v5, since
     * it uses an immutable beacon without looking at the value of the ERC-1967 beacon slot for
     * efficiency.
     */
    function upgradeBeaconToAndCall(address newBeacon, bytes memory data) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);

        if (data.length > 0) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        } else {
            _checkNonPayable();
        }
    }

    /**
     * @dev Reverts if `msg.value` is not zero. It can be used to avoid `msg.value` stuck in the contract
     * if an upgrade doesn't perform an initialization call.
     */
    function _checkNonPayable() private {
        if (msg.value > 0) {
            revert ERC1967NonPayable();
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (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 v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

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

pragma solidity ^0.8.20;

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

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

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

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

import {IEverclear} from 'interfaces/common/IEverclear.sol';
import {IPermit2} from 'interfaces/common/IPermit2.sol';

import {ISettlementModule} from 'interfaces/common/ISettlementModule.sol';
import {ICallExecutor} from 'interfaces/intent/ICallExecutor.sol';
import {ISpokeGateway} from 'interfaces/intent/ISpokeGateway.sol';

/**
 * @title ISpokeStorageV4
 * @notice Interface for the SpokeStorage contract
 */
interface ISpokeStorageV4 is IEverclear {
  /*///////////////////////////////////////////////////////////////
                              STRUCTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Parameters needed to initiliaze `EverclearSpoke`
   * @param gateway The local `SpokeGateway`
   * @param callExecutor The local `CallExecutor`
   * @param messageReceiver The address for the `SpokeMessageReceiver` module
   * @param lighthouse The address for the Lighthouse agent
   * @param watchtower The address for the Watchtower agent
   * @param hubDomain The chain id for the Everclear domain
   * @param owner The initial owner of the contract
   */
  struct SpokeInitializationParams {
    ISpokeGateway gateway;
    ICallExecutor callExecutor;
    address messageReceiver;
    address lighthouse;
    address watchtower;
    uint32 hubDomain;
    address owner;
  }

  /*///////////////////////////////////////////////////////////////
                              EVENTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice emitted when the Gateway address is updated
   * @param _oldGateway The address of the old gateway
   * @param _newGateway The address of the new gateway
   */
  event GatewayUpdated(address _oldGateway, address _newGateway);

  /**
   * @notice emitted when the Lighthouse address is updated
   * @param _oldLightHouse The address of the old lighthouse
   * @param _newLightHouse The address of the new lighthouse
   */
  event LighthouseUpdated(address _oldLightHouse, address _newLightHouse);

  /**
   * @notice emitted when the Watchtower address is updated
   * @param _oldWatchtower The address of the old watchtower
   * @param _newWatchtower The address of the new watchtower
   */
  event WatchtowerUpdated(address _oldWatchtower, address _newWatchtower);

  /**
   * @notice emitted when the MessageReceiver address is updated
   * @param _oldMessageReceiver The address of the old message receiver
   * @param _newMessageReceiver The address of the new message receiver
   */
  event MessageReceiverUpdated(address _oldMessageReceiver, address _newMessageReceiver);

  /**
   * @notice emitted when messageGasLimit is updated
   * @param _oldGasLimit The old gas limit
   * @param _newGasLimit The new gas limit
   */
  event MessageGasLimitUpdated(uint256 _oldGasLimit, uint256 _newGasLimit);

  /**
   * @notice emitted when the protocol is paused (domain-level)
   */
  event Paused();

  /**
   * @notice emitted when the protocol is paused (domain-level)
   */
  event Unpaused();

  /**
   * @notice emitted when a strategy is set for an asset
   * @param _asset The address of the asset being configured
   * @param _strategy The id for the strategy (see `enum Strategy`)
   */
  event StrategySetForAsset(address _asset, IEverclear.Strategy _strategy);

  /**
   * @notice emitted when the module is set for a strategy
   * @param _strategy The id for the strategy (see `enum Strategy`)
   * @param _module The settlement module
   */
  event ModuleSetForStrategy(IEverclear.Strategy _strategy, ISettlementModule _module);

  /**
   * @notice emitted when the EverclearSpoke processes a settlement
   * @param _intentId The ID of the intent
   * @param _account The address of the account
   * @param _asset The address of the asset
   * @param _amount The amount of the asset
   */
  event Settled(bytes32 indexed _intentId, address _account, address _asset, uint256 _amount);

  /**
   * @notice emitted when `_handleSettlement` fails to transfer tokens to a user (eg. blacklisted recipient)
   * @param _asset The address of the asset
   * @param _recipient The address of the recipient
   * @param _amount The amount of the asset
   */
  event AssetTransferFailed(address indexed _asset, address indexed _recipient, uint256 _amount);

  /**
   * @notice emitted when `_handleSettlement` fails to mint the non-default stategy asset
   * @param _asset The address of the asset
   * @param _recipient The address of the recipient
   * @param _amount The amount of the asset
   * @param _strategy The strategy used for the asset
   */
  event AssetMintFailed(address indexed _asset, address indexed _recipient, uint256 _amount, Strategy _strategy);

  /*///////////////////////////////////////////////////////////////
                              ERRORS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Thrown when the spoke is receiving a message from an address that is not the authorized gateway, admin or owner
   */
  error EverclearSpoke_Unauthorized();

  /**
   * @notice Thrown when a message is not a valid message type
   */
  error EverclearSpoke_InvalidMessageType();

  /**
   * @notice Thrown when the destination is wrong
   */
  error EverclearSpoke_WrongDestination();

  /**
   * @notice Thrown when a variable update is invalid
   */
  error EverclearSpoke_InvalidVarUpdate();

  /**
   * @notice Thrown when calling to a processQueue method with a zero amount
   */
  error EverclearSpoke_ProcessQueue_ZeroAmount();

  /**
   * @notice Thrown when calling to a processQueue method with an invalid amount
   * @param _first The index of the first element of the queue
   * @param _last The index of the last element of the queue
   * @param _amount The amount of items being tried to process
   */
  error EverclearSpoke_ProcessQueue_InvalidAmount(uint256 _first, uint256 _last, uint256 _amount);

  /**
   * @notice Thrown when calling a function with the zero address
   */
  error EverclearSpoke_ZeroAddress();

  /**
   * @notice Thrown when a function is called when the spoke is paused
   */
  error EverclearSpoke_Paused();

  /**
   * @notice Thrown when the caller is not authorized to pause the spoke
   */
  error EverclearSpoke_Pause_NotAuthorized();

  /**
   * @notice Thrown when the caller is not authorized to pause the spoke
   */
  error EverclearSpoke_FeeAdapter_NotAuthorized();

  /*///////////////////////////////////////////////////////////////
                              VIEWS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice returns the typehash for `fillIntentForSolver`
   * @return _typeHash The `fillIntentForSolver` type hash
   */
  function FILL_INTENT_FOR_SOLVER_TYPEHASH() external view returns (bytes32 _typeHash);

  /**
   * @notice returns the typehash for `processIntentQueueViaRelayer`
   * @return _typeHash The `processIntentQueueViaRelayer` type hash
   */
  function PROCESS_INTENT_QUEUE_VIA_RELAYER_TYPEHASH() external view returns (bytes32 _typeHash);

  /**
   * @notice returns the typehash for `processFillQueueViaRelayer`
   * @return _typeHash The `processFillQueueViaRelayer` type hash
   */
  function PROCESS_FILL_QUEUE_VIA_RELAYER_TYPEHASH() external view returns (bytes32 _typeHash);

  /**
   * @notice returns the permit2 contract
   * @return _permit2 The Permit2 singleton address
   */
  function PERMIT2() external view returns (IPermit2 _permit2);

  /**
   * @notice returns the domain id for the Everclear rollup
   * @return _domain The id of the Everclear domain
   */
  function EVERCLEAR() external view returns (uint32 _domain);

  /**
   * @notice returns the current domain
   * @return _domain The id of the current domain
   */
  function DOMAIN() external view returns (uint32 _domain);

  /**
   * @notice returns the lighthouse address
   * @return _lighthouse The address of the Lighthouse agent
   */
  function lighthouse() external view returns (address _lighthouse);

  /**
   * @notice returns the watchtower address
   * @return _watchtower The address of the Watchtower agent
   */
  function watchtower() external view returns (address _watchtower);

  /**
   * @notice returns the message receiver address
   * @return _messageReceiver The address of the `SpokeMessageReceiver`
   */
  function messageReceiver() external view returns (address _messageReceiver);

  /**
   * @notice returns the gateway
   * @return _gateway The local `SpokeGateway`
   */
  function gateway() external view returns (ISpokeGateway _gateway);

  /**
   * @notice returns the call executor
   * @return _callExecutor The local `CallExecutor`
   */
  function callExecutor() external view returns (ICallExecutor _callExecutor);

  /**
   * @notice returns the fee adapter
   * @return _feeAdapter The address of the fee adapter
   */
  function feeAdapter() external view returns (address _feeAdapter);

  /**
   * @notice returns the paused status of the spoke
   * @return _paused The boolean indicating if the contract is paused
   */
  function paused() external view returns (bool _paused);

  /**
   * @notice returns the current intent nonce
   * @return _nonce The current nonce
   */
  function nonce() external view returns (uint64 _nonce);

  /**
   * @notice returns the gas limit used for outgoing messages
   * @return _messageGasLimit the max gas limit
   */
  function messageGasLimit() external view returns (uint256 _messageGasLimit);

  /**
   * @notice returns the balance of an asset for a user
   * @param _asset The address of the asset
   * @param _user The address of the user
   * @return _amount The amount of assets locked in the contract
   */
  function balances(bytes32 _asset, bytes32 _user) external view returns (uint256 _amount);

  /**
   * @notice returns the status of an intent
   * @param _intentId The ID of the intent
   * @return _status The status of the intent
   */
  function status(
    bytes32 _intentId
  ) external view returns (IntentStatus _status);

  /**
   * @notice returns the configured strategy id for an asset
   * @param _asset The address of the asset
   * @return _strategy The strategy for the asset
   */
  function strategies(
    address _asset
  ) external view returns (IEverclear.Strategy _strategy);

  /**
   * @notice returns the module address for a strategy
   * @param _strategy The strategy id
   * @return _module The strategy module
   */
  function modules(
    IEverclear.Strategy _strategy
  ) external view returns (ISettlementModule _module);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import {IMailbox} from '@hyperlane/interfaces/IMailbox.sol';

import {IMessageReceiver} from 'interfaces/common/IMessageReceiver.sol';

interface IGateway {
  /*///////////////////////////////////////////////////////////////
                              EVENTS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Emitted when the mailbox is updated
   * @param _oldMailbox The old mailbox address
   * @param _newMailbox The new mailbox address
   */
  event MailboxUpdated(address _oldMailbox, address _newMailbox);

  /**
   * @notice Emitted when the security module is updated
   * @param _oldSecurityModule The old security module address
   * @param _newSecurityModule The new security module address
   */
  event SecurityModuleUpdated(address _oldSecurityModule, address _newSecurityModule);

  /*///////////////////////////////////////////////////////////////
                              ERRORS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Thrown when the message origin is invalid
   */
  error Gateway_Handle_InvalidOriginDomain();

  /**
   * @notice Thrown when the sender is not the appropriate remote Gateway
   */
  error Gateway_Handle_InvalidSender();

  /**
   * @notice Thrown when the caller is not the local mailbox
   */
  error Gateway_Handle_NotCalledByMailbox();

  /**
   * @notice Thrown when the GasTank does not have enough native asset to cover the fee
   */
  error Gateway_SendMessage_InsufficientBalance();

  /**
   * @notice Thrown when the message dispatcher is not the local receiver
   */
  error Gateway_SendMessage_UnauthorizedCaller();

  /**
   * @notice Thrown when the call returning the unused fee fails
   */
  error Gateway_SendMessage_UnsuccessfulRebate();

  /**
   * @notice Thrown when an address equals the address zero
   */
  error Gateway_ZeroAddress();

  /*///////////////////////////////////////////////////////////////
                              LOGIC
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Send a message to the transport layer using the gas tank
   * @param _chainId The id of the destination chain
   * @param _message The message to send
   * @param _fee The fee to send the message
   * @param _gasLimit The gas limit to use on destination
   * @return _messageId The id message of the transport layer
   * @return _feeSpent The fee spent to send the message
   * @dev only called by the spoke contract
   */
  function sendMessage(
    uint32 _chainId,
    bytes memory _message,
    uint256 _fee,
    uint256 _gasLimit
  ) external returns (bytes32 _messageId, uint256 _feeSpent);

  /**
   * @notice Send a message to the transport layer
   * @param _chainId The id of the destination chain
   * @param _message The message to send
   * @param _gasLimit The gas limit to use on destination
   * @return _messageId The id message of the transport layer
   * @return _feeSpent The fee spent to send the message
   * @dev only called by the spoke contract
   */
  function sendMessage(
    uint32 _chainId,
    bytes memory _message,
    uint256 _gasLimit
  ) external payable returns (bytes32 _messageId, uint256 _feeSpent);

  /**
   * @notice Updates the mailbox
   * @param _mailbox The new mailbox address
   * @dev only called by the `receiver`
   */
  function updateMailbox(
    address _mailbox
  ) external;

  /**
   * @notice Updates the gateway security module
   * @param _securityModule The address of the new security module
   * @dev only called by the `receiver`
   */
  function updateSecurityModule(
    address _securityModule
  ) external;

  /*///////////////////////////////////////////////////////////////
                              VIEWS
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Returns the transport layer message routing smart contract
   * @dev this is independent of the transport layer used, adopting mailbox name because its descriptive enough
   *      using address instead of specific interface to be independent from HL or any other TL
   * @return _mailbox The mailbox contract
   */
  function mailbox() external view returns (IMailbox _mailbox);

  /**
   * @notice Returns the message receiver for this Gateway (EverclearHub / EverclearSpoke)
   * @return _receiver The message receiver
   */
  function receiver() external view returns (IMessageReceiver _receiver);

  /**
   * @notice Quotes cost of sending a message to the transport layer
   * @param _chainId The id of the destination chain
   * @param _message The message to send
   * @param _gasLimit The gas limit for delivering the message
   * @return _fee The fee to send the message
   */
  function quoteMessage(uint32 _chainId, bytes memory _message, uint256 _gasLimit) external view returns (uint256 _fee);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

/**
 * @title ICallExecutor
 * @notice Interface for the CallExecutor contract, executes calls to external contracts
 */
interface ICallExecutor {
  /**
   * @notice Safely call a target contract, use when you _really_ really _really_ don't trust the called
   * contract. This prevents the called contract from causing reversion of the caller in as many ways as we can.
   * @param _target The address to call
   * @param _gas The amount of gas to forward to the remote contract
   * @param _value The value in wei to send to the remote contract
   * @param _maxCopy The maximum number of bytes of returndata to copy to memory
   * @param _calldata The data to send to the remote contract
   * @return _success Whether the call was successful
   * @return _returnData Returndata as `.call()`. Returndata is capped to `_maxCopy` bytes.
   */
  function excessivelySafeCall(
    address _target,
    uint256 _gas,
    uint256 _value,
    uint16 _maxCopy,
    bytes memory _calldata
  ) external returns (bool _success, bytes memory _returnData);
}

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

pragma solidity ^0.8.20;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {UpgradeableBeacon} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

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

pragma solidity ^0.8.20;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(newImplementation.code.length > 0);
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

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

pragma solidity ^0.8.20;

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

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

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

import {IInterchainSecurityModule} from "./IInterchainSecurityModule.sol";
import {IPostDispatchHook} from "./hooks/IPostDispatchHook.sol";

interface IMailbox {
    // ============ Events ============
    /**
     * @notice Emitted when a new message is dispatched via Hyperlane
     * @param sender The address that dispatched the message
     * @param destination The destination domain of the message
     * @param recipient The message recipient address on `destination`
     * @param message Raw bytes of message
     */
    event Dispatch(
        address indexed sender,
        uint32 indexed destination,
        bytes32 indexed recipient,
        bytes message
    );

    /**
     * @notice Emitted when a new message is dispatched via Hyperlane
     * @param messageId The unique message identifier
     */
    event DispatchId(bytes32 indexed messageId);

    /**
     * @notice Emitted when a Hyperlane message is processed
     * @param messageId The unique message identifier
     */
    event ProcessId(bytes32 indexed messageId);

    /**
     * @notice Emitted when a Hyperlane message is delivered
     * @param origin The origin domain of the message
     * @param sender The message sender address on `origin`
     * @param recipient The address that handled the message
     */
    event Process(
        uint32 indexed origin,
        bytes32 indexed sender,
        address indexed recipient
    );

    function localDomain() external view returns (uint32);

    function delivered(bytes32 messageId) external view returns (bool);

    function defaultIsm() external view returns (IInterchainSecurityModule);

    function defaultHook() external view returns (IPostDispatchHook);

    function requiredHook() external view returns (IPostDispatchHook);

    function latestDispatchedId() external view returns (bytes32);

    function dispatch(
        uint32 destinationDomain,
        bytes32 recipientAddress,
        bytes calldata messageBody
    ) external payable returns (bytes32 messageId);

    function quoteDispatch(
        uint32 destinationDomain,
        bytes32 recipientAddress,
        bytes calldata messageBody
    ) external view returns (uint256 fee);

    function dispatch(
        uint32 destinationDomain,
        bytes32 recipientAddress,
        bytes calldata body,
        bytes calldata defaultHookMetadata
    ) external payable returns (bytes32 messageId);

    function quoteDispatch(
        uint32 destinationDomain,
        bytes32 recipientAddress,
        bytes calldata messageBody,
        bytes calldata defaultHookMetadata
    ) external view returns (uint256 fee);

    function dispatch(
        uint32 destinationDomain,
        bytes32 recipientAddress,
        bytes calldata body,
        bytes calldata customHookMetadata,
        IPostDispatchHook customHook
    ) external payable returns (bytes32 messageId);

    function quoteDispatch(
        uint32 destinationDomain,
        bytes32 recipientAddress,
        bytes calldata messageBody,
        bytes calldata customHookMetadata,
        IPostDispatchHook customHook
    ) external view returns (uint256 fee);

    function process(
        bytes calldata metadata,
        bytes calldata message
    ) external payable;

    function recipientIsm(
        address recipient
    ) external view returns (IInterchainSecurityModule module);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.6.11;

interface IInterchainSecurityModule {
    enum Types {
        UNUSED,
        ROUTING,
        AGGREGATION,
        LEGACY_MULTISIG,
        MERKLE_ROOT_MULTISIG,
        MESSAGE_ID_MULTISIG,
        NULL, // used with relayer carrying no metadata
        CCIP_READ
    }

    /**
     * @notice Returns an enum that represents the type of security model
     * encoded by this ISM.
     * @dev Relayers infer how to fetch and format metadata.
     */
    function moduleType() external view returns (uint8);

    /**
     * @notice Defines a security model responsible for verifying interchain
     * messages based on the provided metadata.
     * @param _metadata Off-chain metadata provided by a relayer, specific to
     * the security model encoded by the module (e.g. validator signatures)
     * @param _message Hyperlane encoded interchain message
     * @return True if the message was verified
     */
    function verify(
        bytes calldata _metadata,
        bytes calldata _message
    ) external returns (bool);
}

interface ISpecifiesInterchainSecurityModule {
    function interchainSecurityModule()
        external
        view
        returns (IInterchainSecurityModule);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

/*@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
     @@@@@  HYPERLANE  @@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
@@@@@@@@@       @@@@@@@@*/

interface IPostDispatchHook {
    enum Types {
        UNUSED,
        ROUTING,
        AGGREGATION,
        MERKLE_TREE,
        INTERCHAIN_GAS_PAYMASTER,
        FALLBACK_ROUTING,
        ID_AUTH_ISM,
        PAUSABLE,
        PROTOCOL_FEE,
        LAYER_ZERO_V1
    }

    /**
     * @notice Returns an enum that represents the type of hook
     */
    function hookType() external view returns (uint8);

    /**
     * @notice Returns whether the hook supports metadata
     * @param metadata metadata
     * @return Whether the hook supports metadata
     */
    function supportsMetadata(
        bytes calldata metadata
    ) external view returns (bool);

    /**
     * @notice Post action after a message is dispatched via the Mailbox
     * @param metadata The metadata required for the hook
     * @param message The message passed from the Mailbox.dispatch() call
     */
    function postDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) external payable;

    /**
     * @notice Compute the payment required by the postDispatch call
     * @param metadata The metadata required for the hook
     * @param message The message passed from the Mailbox.dispatch() call
     * @return Quoted payment for the postDispatch call
     */
    function quoteDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) external view returns (uint256);
}

{
  "remappings": [
    "ds-test/=../../node_modules/ds-test/src/",
    "forge-std/=../../node_modules/forge-std/src/",
    "isolmate/=../../node_modules/isolmate/src/",
    "@hyperlane/=../../node_modules/@hyperlane-xyz/core/contracts/",
    "@openzeppelin/=../../node_modules/@openzeppelin/",
    "@upgrades/=lib/openzeppelin-foundry-upgrades/src/",
    "xerc20/=lib/xerc20/solidity/contracts/",
    "contracts/=src/contracts/",
    "interfaces/=src/interfaces/",
    "utils/=script/utils/",
    "@eth-optimism/=../../node_modules/@eth-optimism/",
    "@hyperlane-xyz/=../../node_modules/@hyperlane-xyz/",
    "@layerzerolabs/=../../node_modules/@layerzerolabs/",
    "erc4626-tests/=lib/xerc20/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-gas-snapshot/=lib/xerc20/lib/permit2/lib/forge-gas-snapshot/src/",
    "fx-portal/=../../node_modules/fx-portal/",
    "openzeppelin-contracts/=lib/xerc20/lib/openzeppelin-contracts/",
    "openzeppelin-foundry-upgrades/=lib/openzeppelin-foundry-upgrades/src/",
    "openzeppelin/=lib/xerc20/lib/openzeppelin-contracts/contracts/",
    "permit2/=lib/xerc20/lib/permit2/",
    "prb-test/=lib/xerc20/lib/prb-test/src/",
    "prb/test/=lib/xerc20/lib/prb-test/src/",
    "solidity-stringutils/=lib/openzeppelin-foundry-upgrades/lib/solidity-stringutils/",
    "solmate/=lib/xerc20/lib/permit2/lib/solmate/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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IEverclear.Intent","name":"_intent","type":"tuple"},{"internalType":"uint24","name":"_fee","type":"uint24"}],"name":"fillIntent","outputs":[{"components":[{"internalType":"bytes32","name":"intentId","type":"bytes32"},{"internalType":"bytes32","name":"solver","type":"bytes32"},{"internalType":"bytes32","name":"initiator","type":"bytes32"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"uint48","name":"executionTimestamp","type":"uint48"}],"internalType":"struct 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IEverclearSpokeV4.Permit2Params","name":"_permit2Params","type":"tuple"}],"name":"newIntent","outputs":[{"internalType":"bytes32","name":"_intentId","type":"bytes32"},{"components":[{"internalType":"bytes32","name":"initiator","type":"bytes32"},{"internalType":"bytes32","name":"receiver","type":"bytes32"},{"internalType":"bytes32","name":"inputAsset","type":"bytes32"},{"internalType":"bytes32","name":"outputAsset","type":"bytes32"},{"internalType":"uint24","name":"maxFee","type":"uint24"},{"internalType":"uint32","name":"origin","type":"uint32"},{"internalType":"uint64","name":"nonce","type":"uint64"},{"internalType":"uint48","name":"timestamp","type":"uint48"},{"internalType":"uint48","name":"ttl","type":"uint48"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint32[]","name":"destinations","type":"uint32[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IEverclear.Intent","name":"_intent","type":"tuple"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"nonce","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint32","name":"_amount","type":"uint32"}],"name":"processFillQueue","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_domain","type":"uint32"},{"internalType":"uint32","name":"_amount","type":"uint32"},{"internalType":"address","name":"_relayer","type":"address"},{"internalType":"uint256","name":"_ttl","type":"uint256"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"uint256","name":"_bufferDBPS","type":"uint256"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"processFillQueueViaRelayer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes32","name":"initiator","type":"bytes32"},{"internalType":"bytes32","name":"receiver","type":"bytes32"},{"internalType":"bytes32","name":"inputAsset","type":"bytes32"},{"internalType":"bytes32","name":"outputAsset","type":"bytes32"},{"internalType":"uint24","name":"maxFee","type":"uint24"},{"internalType":"uint32","name":"origin","type":"uint32"},{"internalType":"uint64","name":"nonce","type":"uint64"},{"internalType":"uint48","name":"timestamp","type":"uint48"},{"internalType":"uint48","name":"ttl","type":"uint48"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint32[]","name":"destinations","type":"uint32[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IEverclear.Intent[]","name":"_intents","type":"tuple[]"}],"name":"processIntentQueue","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_domain","type":"uint32"},{"components":[{"internalType":"bytes32","name":"initiator","type":"bytes32"},{"internalType":"bytes32","name":"receiver","type":"bytes32"},{"internalType":"bytes32","name":"inputAsset","type":"bytes32"},{"internalType":"bytes32","name":"outputAsset","type":"bytes32"},{"internalType":"uint24","name":"maxFee","type":"uint24"},{"internalType":"uint32","name":"origin","type":"uint32"},{"internalType":"uint64","name":"nonce","type":"uint64"},{"internalType":"uint48","name":"timestamp","type":"uint48"},{"internalType":"uint48","name":"ttl","type":"uint48"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint32[]","name":"destinations","type":"uint32[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IEverclear.Intent[]","name":"_intents","type":"tuple[]"},{"internalType":"address","name":"_relayer","type":"address"},{"internalType":"uint256","name":"_ttl","type":"uint256"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"uint256","name":"_bufferDBPS","type":"uint256"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"processIntentQueueViaRelayer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"proxiableUUID","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"","type":"bytes"}],"name":"receiveMessage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum IEverclear.Strategy","name":"_strategy","type":"uint8"},{"internalType":"contract ISettlementModule","name":"_module","type":"address"}],"name":"setModuleForStrategy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"enum IEverclear.Strategy","name":"_strategy","type":"uint8"}],"name":"setStrategyForAsset","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_intentId","type":"bytes32"}],"name":"status","outputs":[{"internalType":"enum IEverclear.IntentStatus","name":"status","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"}],"name":"strategies","outputs":[{"internalType":"enum IEverclear.Strategy","name":"_strategy","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeAdapter","type":"address"}],"name":"updateFeeAdapter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newGateway","type":"address"}],"name":"updateGateway","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newGasLimit","type":"uint256"}],"name":"updateMessageGasLimit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newMessageReceiver","type":"address"}],"name":"updateMessageReceiver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newSecurityModule","type":"address"}],"name":"updateSecurityModule","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"watchtower","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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