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

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

import "./libs/Errors.sol";
import {UniversalTokenLib} from "./libs/UniversalToken.sol";

import {Admin} from "./Admin.sol";
import {IFastBridge} from "./interfaces/IFastBridge.sol";

contract FastBridge is IFastBridge, Admin {
    using SafeERC20 for IERC20;
    using UniversalTokenLib for address;

    /// @notice Dispute period for relayed transactions
    uint256 public constant DISPUTE_PERIOD = 30 minutes;

    /// @notice Delay for a transaction after which it could be permisionlessly refunded
    uint256 public constant REFUND_DELAY = 7 days;

    /// @notice Minimum deadline period to relay a requested bridge transaction
    uint256 public constant MIN_DEADLINE_PERIOD = 30 minutes;

    enum BridgeStatus {
        NULL, // doesn't exist yet
        REQUESTED,
        RELAYER_PROVED,
        RELAYER_CLAIMED,
        REFUNDED
    }

    /// @notice Status of the bridge tx on origin chain
    mapping(bytes32 => BridgeStatus) public bridgeStatuses;
    /// @notice Proof of relayed bridge tx on origin chain
    mapping(bytes32 => BridgeProof) public bridgeProofs;
    /// @notice Whether bridge has been relayed on destination chain
    mapping(bytes32 => bool) public bridgeRelays;

    /// @dev to prevent replays
    uint256 public nonce;
    // @dev the block the contract was deployed at
    uint256 public immutable deployBlock;

    constructor(address _owner) Admin(_owner) {
        deployBlock = block.number;
    }

    /// @notice Pulls a requested token from the user to the requested recipient.
    /// @dev Be careful of re-entrancy issues when msg.value > 0 and recipient != address(this)
    function _pullToken(address recipient, address token, uint256 amount) internal returns (uint256 amountPulled) {
        if (token != UniversalTokenLib.ETH_ADDRESS) {
            token.assertIsContract();
            // Record token balance before transfer
            amountPulled = IERC20(token).balanceOf(recipient);
            // Token needs to be pulled only if msg.value is zero
            // This way user can specify WETH as the origin asset
            IERC20(token).safeTransferFrom(msg.sender, recipient, amount);
            // Use the difference between the recorded balance and the current balance as the amountPulled
            amountPulled = IERC20(token).balanceOf(recipient) - amountPulled;
        } else {
            // Otherwise, we need to check that ETH amount matches msg.value
            if (amount != msg.value) revert MsgValueIncorrect();
            // Transfer value to recipient if not this address
            if (recipient != address(this)) token.universalTransfer(recipient, amount);
            // We will forward msg.value in the external call later, if recipient is not this contract
            amountPulled = msg.value;
        }
    }

    /// @inheritdoc IFastBridge
    function getBridgeTransaction(bytes memory request) public pure returns (BridgeTransaction memory) {
        return abi.decode(request, (BridgeTransaction));
    }

    /// @inheritdoc IFastBridge
    function bridge(BridgeParams memory params) external payable {
        // check bridge params
        if (params.dstChainId == block.chainid) revert ChainIncorrect();
        if (params.originAmount == 0 || params.destAmount == 0) revert AmountIncorrect();
        if (params.originToken == address(0) || params.destToken == address(0)) revert ZeroAddress();
        if (params.deadline < block.timestamp + MIN_DEADLINE_PERIOD) revert DeadlineTooShort();

        // transfer tokens to bridge contract
        // @dev use returned originAmount in request in case of transfer fees
        uint256 originAmount = _pullToken(address(this), params.originToken, params.originAmount);

        // track amount of origin token owed to protocol
        uint256 originFeeAmount;
        if (protocolFeeRate > 0) originFeeAmount = (originAmount * protocolFeeRate) / FEE_BPS;
        originAmount -= originFeeAmount; // remove from amount used in request as not relevant for relayers

        // set status to requested
        bytes memory request = abi.encode(
            BridgeTransaction({
                originChainId: uint32(block.chainid),
                destChainId: params.dstChainId,
                originSender: params.sender,
                destRecipient: params.to,
                originToken: params.originToken,
                destToken: params.destToken,
                originAmount: originAmount,
                destAmount: params.destAmount,
                originFeeAmount: originFeeAmount,
                sendChainGas: params.sendChainGas,
                deadline: params.deadline,
                nonce: nonce++ // increment nonce on every bridge
            })
        );
        bytes32 transactionId = keccak256(request);
        bridgeStatuses[transactionId] = BridgeStatus.REQUESTED;

        emit BridgeRequested(
            transactionId,
            params.sender,
            request,
            params.dstChainId,
            params.originToken,
            params.destToken,
            originAmount,
            params.destAmount,
            params.sendChainGas
        );
    }

    /// @inheritdoc IFastBridge
    function relay(bytes memory request) external payable onlyRole(RELAYER_ROLE) {
        bytes32 transactionId = keccak256(request);
        BridgeTransaction memory transaction = getBridgeTransaction(request);
        if (transaction.destChainId != uint32(block.chainid)) revert ChainIncorrect();

        // check haven't exceeded deadline for relay to happen
        if (block.timestamp > transaction.deadline) revert DeadlineExceeded();

        // mark bridge transaction as relayed
        if (bridgeRelays[transactionId]) revert TransactionRelayed();
        bridgeRelays[transactionId] = true;

        // transfer tokens to recipient on destination chain and gas rebate if requested
        address to = transaction.destRecipient;
        address token = transaction.destToken;
        uint256 amount = transaction.destAmount;

        uint256 rebate = chainGasAmount;
        if (!transaction.sendChainGas) {
            // forward erc20
            rebate = 0;
            _pullToken(to, token, amount);
        } else if (token == UniversalTokenLib.ETH_ADDRESS) {
            // lump in gas rebate into amount in native gas token
            _pullToken(to, token, amount + rebate);
        } else {
            // forward erc20 then forward gas rebate in native gas token
            _pullToken(to, token, amount);
            _pullToken(to, UniversalTokenLib.ETH_ADDRESS, rebate);
        }

        emit BridgeRelayed(
            transactionId,
            msg.sender,
            to,
            transaction.originChainId,
            transaction.originToken,
            transaction.destToken,
            transaction.originAmount,
            transaction.destAmount,
            rebate
        );
    }

    /// @inheritdoc IFastBridge
    function prove(bytes memory request, bytes32 destTxHash) external onlyRole(RELAYER_ROLE) {
        bytes32 transactionId = keccak256(request);
        // update bridge tx status given proof provided
        if (bridgeStatuses[transactionId] != BridgeStatus.REQUESTED) revert StatusIncorrect();
        bridgeStatuses[transactionId] = BridgeStatus.RELAYER_PROVED;
        bridgeProofs[transactionId] = BridgeProof({timestamp: uint96(block.timestamp), relayer: msg.sender}); // overflow ok

        emit BridgeProofProvided(transactionId, msg.sender, destTxHash);
    }

    /// @notice Calculates time since proof submitted
    /// @dev proof.timestamp stores casted uint96(block.timestamp) block timestamps for gas optimization
    ///      _timeSince(proof) can accomodate rollover case when block.timestamp > type(uint96).max but
    ///      proof.timestamp < type(uint96).max via unchecked statement
    /// @param proof The bridge proof
    /// @return delta Time delta since proof submitted
    function _timeSince(BridgeProof memory proof) internal view returns (uint256 delta) {
        unchecked {
            delta = uint96(block.timestamp) - proof.timestamp;
        }
    }

    /// @inheritdoc IFastBridge
    function canClaim(bytes32 transactionId, address relayer) external view returns (bool) {
        if (bridgeStatuses[transactionId] != BridgeStatus.RELAYER_PROVED) revert StatusIncorrect();
        BridgeProof memory proof = bridgeProofs[transactionId];
        if (proof.relayer != relayer) revert SenderIncorrect();
        return _timeSince(proof) > DISPUTE_PERIOD;
    }

    /// @inheritdoc IFastBridge
    function claim(bytes memory request, address to) external onlyRole(RELAYER_ROLE) {
        bytes32 transactionId = keccak256(request);
        BridgeTransaction memory transaction = getBridgeTransaction(request);

        // update bridge tx status if able to claim origin collateral
        if (bridgeStatuses[transactionId] != BridgeStatus.RELAYER_PROVED) revert StatusIncorrect();

        BridgeProof memory proof = bridgeProofs[transactionId];
        if (proof.relayer != msg.sender) revert SenderIncorrect();
        if (_timeSince(proof) <= DISPUTE_PERIOD) revert DisputePeriodNotPassed();

        bridgeStatuses[transactionId] = BridgeStatus.RELAYER_CLAIMED;

        // update protocol fees if origin fee amount exists
        if (transaction.originFeeAmount > 0) protocolFees[transaction.originToken] += transaction.originFeeAmount;

        // transfer origin collateral less fee to specified address
        address token = transaction.originToken;
        uint256 amount = transaction.originAmount;
        token.universalTransfer(to, amount);

        emit BridgeDepositClaimed(transactionId, msg.sender, to, token, amount);
    }

    /// @inheritdoc IFastBridge
    function dispute(bytes32 transactionId) external onlyRole(GUARD_ROLE) {
        if (bridgeStatuses[transactionId] != BridgeStatus.RELAYER_PROVED) revert StatusIncorrect();
        if (_timeSince(bridgeProofs[transactionId]) > DISPUTE_PERIOD) revert DisputePeriodPassed();

        // @dev relayer gets slashed effectively if dest relay has gone thru
        bridgeStatuses[transactionId] = BridgeStatus.REQUESTED;
        delete bridgeProofs[transactionId];

        emit BridgeProofDisputed(transactionId, msg.sender);
    }

    /// @inheritdoc IFastBridge
    function refund(bytes memory request) external {
        bytes32 transactionId = keccak256(request);
        BridgeTransaction memory transaction = getBridgeTransaction(request);

        if (hasRole(REFUNDER_ROLE, msg.sender)) {
            // Refunder can refund if deadline has passed
            if (block.timestamp <= transaction.deadline) revert DeadlineNotExceeded();
        } else {
            // Permissionless refund is allowed after REFUND_DELAY
            if (block.timestamp <= transaction.deadline + REFUND_DELAY) revert DeadlineNotExceeded();
        }

        // set status to refunded if still in requested state
        if (bridgeStatuses[transactionId] != BridgeStatus.REQUESTED) revert StatusIncorrect();
        bridgeStatuses[transactionId] = BridgeStatus.REFUNDED;

        // transfer origin collateral back to original sender
        address to = transaction.originSender;
        address token = transaction.originToken;
        uint256 amount = transaction.originAmount + transaction.originFeeAmount;
        token.universalTransfer(to, amount);

        emit BridgeDepositRefunded(transactionId, to, token, amount);
    }
}

// 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 ERC-20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

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

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

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

    /**
     * @dev 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
pragma solidity 0.8.20;

error DeadlineExceeded();
error DeadlineNotExceeded();
error DeadlineTooShort();
error InsufficientOutputAmount();

error MsgValueIncorrect();
error PoolNotFound();
error TokenAddressMismatch();
error TokenNotContract();
error TokenNotETH();
error TokensIdentical();

error ChainIncorrect();
error AmountIncorrect();
error ZeroAddress();

error DisputePeriodNotPassed();
error DisputePeriodPassed();
error SenderIncorrect();
error StatusIncorrect();
error TransactionIdIncorrect();
error TransactionRelayed();

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

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

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

library UniversalTokenLib {
    using SafeERC20 for IERC20;

    address internal constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    /// @notice Transfers tokens to the given account. Reverts if transfer is not successful.
    /// @dev This might trigger fallback, if ETH is transferred to the contract.
    /// Make sure this can not lead to reentrancy attacks.
    function universalTransfer(address token, address to, uint256 value) internal {
        // Don't do anything, if need to send tokens to this address
        if (to == address(this)) return;
        // Don't do anything, if trying to send zero value
        if (value == 0) return;
        if (token == ETH_ADDRESS) {
            /// @dev Note: this can potentially lead to executing code in `to`.
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = to.call{value: value}("");
            require(success, "ETH transfer failed");
        } else {
            IERC20(token).safeTransfer(to, value);
        }
    }

    /// @notice Issues an infinite allowance to the spender, if the current allowance is insufficient
    /// to spend the given amount.
    function universalApproveInfinity(address token, address spender, uint256 amountToSpend) internal {
        // ETH Chad doesn't require your approval
        if (token == ETH_ADDRESS) return;
        // No-op if allowance is already sufficient
        uint256 allowance = IERC20(token).allowance(address(this), spender);
        if (allowance >= amountToSpend) return;
        // Otherwise, reset approval to 0 and set to max allowance
        if (allowance > 0) IERC20(token).safeDecreaseAllowance(spender, allowance);
        IERC20(token).safeIncreaseAllowance(spender, type(uint256).max);
    }

    /// @notice Returns the balance of the given token (or native ETH) for the given account.
    function universalBalanceOf(address token, address account) internal view returns (uint256) {
        if (token == ETH_ADDRESS) {
            return account.balance;
        } else {
            return IERC20(token).balanceOf(account);
        }
    }

    /// @dev Checks that token is a contract and not ETH_ADDRESS.
    function assertIsContract(address token) internal view {
        // Check that ETH_ADDRESS was not used (in case this is a predeploy on any of the chains)
        if (token == UniversalTokenLib.ETH_ADDRESS) revert TokenNotContract();
        // Check that token is not an EOA
        if (token.code.length == 0) revert TokenNotContract();
    }
}

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

import {AccessControlEnumerable} from "@openzeppelin/contracts/access/extensions/AccessControlEnumerable.sol";

import {UniversalTokenLib} from "./libs/UniversalToken.sol";
import {IAdmin} from "./interfaces/IAdmin.sol";

contract Admin is IAdmin, AccessControlEnumerable {
    using UniversalTokenLib for address;

    bytes32 public constant RELAYER_ROLE = keccak256("RELAYER_ROLE");
    bytes32 public constant REFUNDER_ROLE = keccak256("REFUNDER_ROLE");
    bytes32 public constant GUARD_ROLE = keccak256("GUARD_ROLE");
    bytes32 public constant GOVERNOR_ROLE = keccak256("GOVERNOR_ROLE");

    uint256 public constant FEE_BPS = 1e6;
    uint256 public constant FEE_RATE_MAX = 0.01e6; // max 1% on origin amount

    /// @notice Protocol fee rate taken on origin amount deposited in origin chain
    uint256 public protocolFeeRate;

    /// @notice Protocol fee amounts accumulated
    mapping(address => uint256) public protocolFees;

    /// @notice Chain gas amount to forward as rebate if requested
    uint256 public chainGasAmount;

    constructor(address _owner) {
        _grantRole(DEFAULT_ADMIN_ROLE, _owner);
    }

    function setProtocolFeeRate(uint256 newFeeRate) external onlyRole(GOVERNOR_ROLE) {
        require(newFeeRate <= FEE_RATE_MAX, "newFeeRate > max");
        uint256 oldFeeRate = protocolFeeRate;
        protocolFeeRate = newFeeRate;
        emit FeeRateUpdated(oldFeeRate, newFeeRate);
    }

    function sweepProtocolFees(address token, address recipient) external onlyRole(GOVERNOR_ROLE) {
        uint256 feeAmount = protocolFees[token];
        if (feeAmount == 0) return; // skip if no accumulated fees

        protocolFees[token] = 0;
        token.universalTransfer(recipient, feeAmount);
        emit FeesSwept(token, recipient, feeAmount);
    }

    function setChainGasAmount(uint256 newChainGasAmount) external onlyRole(GOVERNOR_ROLE) {
        uint256 oldChainGasAmount = chainGasAmount;
        chainGasAmount = newChainGasAmount;
        emit ChainGasAmountUpdated(oldChainGasAmount, newChainGasAmount);
    }
}

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

interface IFastBridge {
    struct BridgeTransaction {
        uint32 originChainId;
        uint32 destChainId;
        address originSender; // user (origin)
        address destRecipient; // user (dest)
        address originToken;
        address destToken;
        uint256 originAmount; // amount in on origin bridge less originFeeAmount
        uint256 destAmount;
        uint256 originFeeAmount;
        bool sendChainGas;
        uint256 deadline; // user specified deadline for destination relay
        uint256 nonce;
    }

    struct BridgeProof {
        uint96 timestamp;
        address relayer;
    }

    // ============ Events ============

    event BridgeRequested(
        bytes32 indexed transactionId,
        address indexed sender,
        bytes request,
        uint32 destChainId,
        address originToken,
        address destToken,
        uint256 originAmount,
        uint256 destAmount,
        bool sendChainGas
    );
    event BridgeRelayed(
        bytes32 indexed transactionId,
        address indexed relayer,
        address indexed to,
        uint32 originChainId,
        address originToken,
        address destToken,
        uint256 originAmount,
        uint256 destAmount,
        uint256 chainGasAmount
    );
    event BridgeProofProvided(bytes32 indexed transactionId, address indexed relayer, bytes32 transactionHash);
    event BridgeProofDisputed(bytes32 indexed transactionId, address indexed relayer);
    event BridgeDepositClaimed(
        bytes32 indexed transactionId, address indexed relayer, address indexed to, address token, uint256 amount
    );
    event BridgeDepositRefunded(bytes32 indexed transactionId, address indexed to, address token, uint256 amount);

    // ============ Methods ============

    struct BridgeParams {
        uint32 dstChainId;
        address sender;
        address to;
        address originToken;
        address destToken;
        uint256 originAmount; // should include protocol fee (if any)
        uint256 destAmount; // should include relayer fee
        bool sendChainGas;
        uint256 deadline;
    }

    /// @notice Initiates bridge on origin chain to be relayed by off-chain relayer
    /// @param params The parameters required to bridge
    function bridge(BridgeParams memory params) external payable;

    /// @notice Relays destination side of bridge transaction by off-chain relayer
    /// @param request The encoded bridge transaction to relay on destination chain
    function relay(bytes memory request) external payable;

    /// @notice Provides proof on origin side that relayer provided funds on destination side of bridge transaction
    /// @param request The encoded bridge transaction to prove on origin chain
    /// @param destTxHash The destination tx hash proving bridge transaction was relayed
    function prove(bytes memory request, bytes32 destTxHash) external;

    /// @notice Completes bridge transaction on origin chain by claiming originally deposited capital
    /// @param request The encoded bridge transaction to claim on origin chain
    /// @param to The recipient address of the funds
    function claim(bytes memory request, address to) external;

    /// @notice Disputes an outstanding proof in case relayer provided dest chain tx is invalid
    /// @param transactionId The transaction id associated with the encoded bridge transaction to dispute
    function dispute(bytes32 transactionId) external;

    /// @notice Refunds an outstanding bridge transaction in case optimistic bridging failed
    /// @param request The encoded bridge transaction to refund
    function refund(bytes memory request) external;

    // ============ Views ============

    /// @notice Decodes bridge request into a bridge transaction
    /// @param request The bridge request to decode
    function getBridgeTransaction(bytes memory request) external pure returns (BridgeTransaction memory);

    /// @notice Checks if the dispute period has passed so bridge deposit can be claimed
    /// @param transactionId The transaction id associated with the encoded bridge transaction to check
    /// @param relayer The address of the relayer attempting to claim
    function canClaim(bytes32 transactionId, address relayer) external view returns (bool);
}

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

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

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

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[ERC-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC-20 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) (access/extensions/AccessControlEnumerable.sol)

pragma solidity ^0.8.20;

import {IAccessControlEnumerable} from "./IAccessControlEnumerable.sol";
import {AccessControl} from "../AccessControl.sol";
import {EnumerableSet} from "../../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 role => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {AccessControl-_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override returns (bool) {
        bool granted = super._grantRole(role, account);
        if (granted) {
            _roleMembers[role].add(account);
        }
        return granted;
    }

    /**
     * @dev Overload {AccessControl-_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override returns (bool) {
        bool revoked = super._revokeRole(role, account);
        if (revoked) {
            _roleMembers[role].remove(account);
        }
        return revoked;
    }
}

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

interface IAdmin {
    // ============ Events ============

    event FeeRateUpdated(uint256 oldFeeRate, uint256 newFeeRate);
    event FeesSwept(address token, address recipient, uint256 amount);

    event ChainGasAmountUpdated(uint256 oldChainGasAmount, uint256 newChainGasAmount);

    // ============ Methods ============

    function setProtocolFeeRate(uint256 newFeeRate) external;

    function sweepProtocolFees(address token, address recipient) external;

    function setChainGasAmount(uint256 newChainGasAmount) external;
}

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

pragma solidity ^0.8.20;

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

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC-165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

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

pragma solidity ^0.8.20;

import {IAccessControl} from "./IAccessControl.sol";
import {Context} from "../utils/Context.sol";
import {ERC165} from "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        return _roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position is the index of the value in the `values` array plus 1.
        // Position 0 is used to mean a value is not in the set.
        mapping(bytes32 value => uint256) _positions;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._positions[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We cache the value's position to prevent multiple reads from the same storage slot
        uint256 position = set._positions[value];

        if (position != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 valueIndex = position - 1;
            uint256 lastIndex = set._values.length - 1;

            if (valueIndex != lastIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the lastValue to the index where the value to delete is
                set._values[valueIndex] = lastValue;
                // Update the tracked position of the lastValue (that was just moved)
                set._positions[lastValue] = position;
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the tracked position for the deleted slot
            delete set._positions[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._positions[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC-165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

// 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) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

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

pragma solidity ^0.8.20;

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

{
  "remappings": [
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@synapsecns/solidity-devops/=node_modules/@synapsecns/solidity-devops/",
    "forge-std/=lib/forge-std/src/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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IFastBridge.BridgeTransaction","name":"","type":"tuple"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nonce","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"protocolFeeRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"protocolFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"request","type":"bytes"},{"internalType":"bytes32","name":"destTxHash","type":"bytes32"}],"name":"prove","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"request","type":"bytes"}],"name":"refund","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"request","type":"bytes"}],"name":"relay","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"callerConfirmation","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newChainGasAmount","type":"uint256"}],"name":"setChainGasAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newFeeRate","type":"uint256"}],"name":"setProtocolFeeRate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"recipient","type":"address"}],"name":"sweepProtocolFees","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000bd88862fcc17de436f7bd17276c537acadda9a67

-----Decoded View---------------
Arg [0] : _owner (address): 0xbd88862FCc17De436f7BD17276C537aCADDa9a67

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000bd88862fcc17de436f7bd17276c537acadda9a67