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

import {TokenSender} from "@wormhole-upgradeable/WormholeRelayerSDK.sol";
import {CCTPSender, CCTPBase} from "@wormhole-upgradeable/CCTPBase.sol";
import {VaaKey} from "@wormhole-upgradeable/interfaces/IWormholeRelayer.sol";
import "@wormhole-upgradeable/Utils.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import "../HubSpokeStructs.sol";
import "./SpokeGetters.sol";
import "./SpokeUtilities.sol";
import "../wormhole/TokenReceiverWithCCTP.sol";

/**
 * @title Spoke
 * @notice The Spoke contract is the point of entry for cross-chain actions; users initiate an action by calling any of
 * the `public payable` functions (ex: `#depositCollateral`, `#withdrawCollateral`) with their desired asset and amount,
 * and using Wormhole we send the payload/tokens to the Hub on the target chain; if the action concludes with sending
 * tokens back to the user, we receive the final payload/tokens from the Hub before sending tokens to the user. This
 * contract also implements wormhole's CCTP contracts to send/receive USDC.
 */

contract Spoke is HubSpokeStructs, SpokeGetters, SpokeUtilities, TokenSender, CCTPSender, TokenReceiverWithCCTP, Ownable {
    using SafeERC20 for IERC20;

    /**
     * @notice Spoke constructor - Initializes a new spoke with given parameters
     *
     * @param chainId: Chain ID of the chain that this Spoke is deployed on
     * @param wormhole: Address of the Wormhole contract on this Spoke chain
     * @param tokenBridge: Address of the TokenBridge contract on this Spoke chain
     * @param relayer: Address of the WormholeRelayer contract on this Spoke chain
     * @param hubChainId: Chain ID of the Hub
     * @param hubContractAddress: Contract address of the Hub contract (on the Hub chain)
     * @param _circleMessageTransmitter: Cicle Message Transmitter contract (cctp)
     * @param _circleTokenMessenger: Cicle Token Messenger contract (cctp)
     * @param _USDC: USDC token contract (cctp)
     */
    constructor(
        uint16 chainId,
        address wormhole,
        address tokenBridge,
        address relayer,
        uint16 hubChainId,
        address hubContractAddress,
        address _circleMessageTransmitter,
        address _circleTokenMessenger,
        address _USDC
    ) Ownable(msg.sender) {
        CCTPBase.__CCTPBase_init(
            relayer,
            tokenBridge,
            wormhole,
            _circleMessageTransmitter,
            _circleTokenMessenger,
            _USDC
        );
        _state.chainId = chainId;
        _state.hubChainId = hubChainId;
        _state.hubContractAddress = hubContractAddress;
        _state.defaultGasLimitRoundtrip = 650_000;
        _state.isUsingCCTP = _circleMessageTransmitter != address(0); // zero address would indicate not using/supported
        setRegisteredSender(hubChainId, toWormholeFormat(hubContractAddress));
        // disable the registrationOwner so that the Hub can't be changed.
        registrationOwner = address(0);
    }

    /**
     * @notice Allows the contract deployer to set the default gas limit used in wormhole relay quotes
     *
     * @param value: the new value for `defaultGasLimitRoundtrip`
     */
    function setDefaultGasLimitRoundtrip(uint256 value) external onlyOwner {
        _state.defaultGasLimitRoundtrip = value;
    }

    /**
     * @notice Allows the contract deployer to toggle whether we are using CCTP for USDC
     * NOTE: If `_circleMessageTransmitter` is the null address, it indicates CCTP is not supported on this chain, thus
     * we don't do anything.
     *
     * @param value: the new value for `isUsingCCTP`
     */
    function setIsUsingCCTP(bool value) external onlyOwner {
        if (address(circleMessageTransmitter) == address(0)) return; // zero address would indicate not using/supported

        _state.isUsingCCTP = value;
    }

    /**
     * @notice Allows the caller to initiate a cross-chain deposit. The caller must have approved the `assetAmount` of
     * `asset` and must have provided enough `msg.value` to cover the relay
     *
     * @param asset: Addresss of the asset to deposit
     * @param assetAmount: Amount of the asset to deposit
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub (for refunds)
     * @return sequence number of the message sent.
     */
    function depositCollateral(address asset, uint256 assetAmount, uint256 costForReturnDelivery)
        public
        payable
        returns (uint64 sequence)
    {
        require(msg.value >= getDeliveryCostRoundtrip(costForReturnDelivery, true), "Insufficient value sent");
        sequence = _doAction(Action.Deposit, asset, assetAmount, costForReturnDelivery, false);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain withdraw. The caller must have provided enough `msg.value`
     * to cover the relay and the return delivery
     *
     * @param asset: Addresss of the asset to withdraw
     * @param assetAmount: Amount of the asset to withdraw
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub
     * @return sequence number of the message sent.
     */
    function withdrawCollateral(address asset, uint256 assetAmount, uint256 costForReturnDelivery)
        public
        payable
        returns (uint64 sequence)
    {
        require(costForReturnDelivery > 0, "Non-zero costForReturnDelivery");
        sequence = _doAction(Action.Withdraw, asset, assetAmount, costForReturnDelivery, false);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain borrow. The caller must have provided enough `msg.value`
     * to cover the relay and the return delivery
     *
     * @param asset: Addresss of the asset to borrow
     * @param assetAmount: Amount of the asset to borrow
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub
     * @return sequence number of the message sent.
     */
    function borrow(address asset, uint256 assetAmount, uint256 costForReturnDelivery)
        public
        payable
        returns (uint64 sequence)
    {
        require(costForReturnDelivery > 0, "Non-zero costForReturnDelivery");
        sequence = _doAction(Action.Borrow, asset, assetAmount, costForReturnDelivery, false);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain repay. The caller must have approved the `assetAmount` of
     * `asset` and must have provided enough `msg.value` to cover the relay
     *
     * @param asset: Addresss of the asset to borrow
     * @param assetAmount: Amount of the asset to borrow
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub (for refunds)
     * @return sequence number of the message sent.
     */
    function repay(address asset, uint256 assetAmount, uint256 costForReturnDelivery)
        public
        payable
        returns (uint64 sequence)
    {
        require(msg.value >= getDeliveryCostRoundtrip(costForReturnDelivery, true), "Insufficient value sent");
        sequence = _doAction(Action.Repay, asset, assetAmount, costForReturnDelivery, false);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain deposit with native tokens. The caller must have provided
     * enough `msg.value` to cover the relay+return and their desired deposit amount
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub (for refunds)
     * enough `msg.value` to cover the relay and their desired deposit amount
     * @return sequence number of the message sent.
     */
    function depositCollateralNative(uint256 costForReturnDelivery) public payable returns (uint64 sequence) {
        uint256 totalCost = getDeliveryCostRoundtrip(costForReturnDelivery, true);
        require(msg.value >= totalCost, "Spoke::depositCollateralNative:Insufficient value sent");
        uint256 amount = msg.value - totalCost;

        sequence = _doAction(Action.DepositNative, address(0), amount, costForReturnDelivery, false);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain repay with native tokens. The caller must have provided
     * enough `msg.value` to cover the relay+return and their desired repay amount
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub (for refunds)
     * enough `msg.value` to cover the relay and their desired repay amount
     * @return sequence number of the message sent.
     */
    function repayNative(uint256 costForReturnDelivery) public payable returns (uint64 sequence) {
        uint256 totalCost = getDeliveryCostRoundtrip(costForReturnDelivery, true);
        require(msg.value >= totalCost, "Spoke::repayNative:Insufficient value sent");
        uint256 amount = msg.value - totalCost;

        sequence = _doAction(Action.RepayNative, address(0), amount, costForReturnDelivery, false);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain withdraw with native tokens. The caller must have provided
     * enough `msg.value` to cover the relay and the return delivery
     *
     * @param assetAmount: Amount of the asset to withdraw
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub
     * @param unwrap: Whether to unwrap the native tokens or not
     * @return sequence number of the message sent.
     */
    function withdrawCollateralNative(uint256 assetAmount, uint256 costForReturnDelivery, bool unwrap)
        public
        payable
        returns (uint64 sequence)
    {
        sequence = _doAction(Action.Withdraw, address(tokenBridge.WETH()), assetAmount, costForReturnDelivery, unwrap);
    }

    /**
     * @notice Allows the caller to initiate a cross-chain borrow with native tokens. The caller must have provided
     * enough `msg.value` to cover the relay and the return delivery
     *
     * @param assetAmount: Amount of the asset to borrow
     * @param costForReturnDelivery: The quoted cost for return delivery from the Hub
     * @param unwrap: Whether to unwrap the native tokens or not
     * @return sequence number of the message sent.
     */
    function borrowNative(uint256 assetAmount, uint256 costForReturnDelivery, bool unwrap)
        public
        payable
        returns (uint64 sequence)
    {
        sequence = _doAction(Action.Borrow, address(tokenBridge.WETH()), assetAmount, costForReturnDelivery, unwrap);
    }

    /**
     * @notice Get the quote for the wormhole delivery cost, accounting for a forward() call on the Hub (in case of potential
     * reverts or to receive tokens on borrow/withdraw)
     *
     * @param costForReturnDelivery: the result of Hub#getCostForReturnDelivery()
     * @param withTokenTransfer: whether to include the message fee for a token bridge transfer (on deposit or repay)
     * @return cost for the forward() call on the Hub
     */
    function getDeliveryCostRoundtrip(uint256 costForReturnDelivery, bool withTokenTransfer)
        public
        view
        returns (uint256)
    {
        (uint256 cost,) =
            wormholeRelayer.quoteEVMDeliveryPrice(hubChainId(), costForReturnDelivery, defaultGasLimitRoundtrip());

        if (withTokenTransfer) {
            return cost + tokenBridge.wormhole().messageFee();
        }

        return cost;
    }

    /**
     * @dev Initiates an action (deposit, borrow, withdraw, or repay) on the spoke by sending
     * a Wormhole message (potentially a TokenBridge message with tokens) to the Hub
     * @param action - the action to be performed. It can be Deposit, Borrow, Withdraw, Repay, DepositNative, RepayNative.
     * @param asset - the address of the relevant asset. For native tokens like ETH, AVAX, this will be the zero address.
     * @param assetAmount - the amount of the asset to be involved in the action.
     * @param costForReturnDelivery - the cost to forward tokens back from the Hub
     * @param unwrap - a boolean value indicating whether to unwrap the asset or not.
     * @return sequence number of the message sent.
     */
    function _doAction(Action action, address asset, uint256 assetAmount, uint256 costForReturnDelivery, bool unwrap)
        internal
        returns (uint64 sequence)
    {

        require(assetAmount > 0, "No zero asset amount");

        bool withCCTP = asset == USDC && _state.isUsingCCTP;

        // for token transfers, only validate amount if we're using the token bridge
        if (asset != address(0) && !withCCTP) {
            requireAssetAmountValidForTokenBridge(asset, assetAmount);
        }

        Action hubAction = action;

        if (action == Action.DepositNative) {
            hubAction = Action.Deposit;
        } else if (action == Action.RepayNative) {
            hubAction = Action.Repay;
        }

        bool sendingTokens = action == Action.Deposit || action == Action.Repay;
        bool sendingUSDC = withCCTP && sendingTokens;
        bool receivingUSDC = withCCTP && !sendingTokens;
        bytes memory userPayload = abi.encode(uint8(hubAction), msg.sender, asset, unwrap, sendingUSDC, receivingUSDC);
        bytes memory payload = sendingUSDC
            ? userPayload
            : abi.encode(assetAmount, userPayload); // encoding again so it's the same format as cctp messages

        if (sendingTokens) {
            sequence = withCCTP
                ? _sendUSDCWithPayload(payload, assetAmount, costForReturnDelivery)
                : _sendTokenBridgeMessage(payload, asset, assetAmount, costForReturnDelivery);
        } else if (action == Action.Withdraw || action == Action.Borrow) {
            sequence = wormholeRelayer.sendPayloadToEvm{value: msg.value}(
                hubChainId(),
                hubContractAddress(),
                payload,
                costForReturnDelivery,
                defaultGasLimitRoundtrip(),
                chainId(), // refundChain
                msg.sender // refundAddress
            );
        } else if (action == Action.DepositNative || action == Action.RepayNative) {
            sequence = _sendTokenBridgeMessageNative(payload, assetAmount, costForReturnDelivery);
        }
    }

    /**
     * @dev Sends EVM Worlhole Relayer a message with the given payload and value
     * @param value - amount of ETH to be sent to relayer
     * @param payload - the payload to be sent
     * @param costForReturnDelivery - the cost to forward tokens back from the Hub
     * @param refundAddress The address on `refundChain` to deliver any refund to
     * @return sequence - the sequence number of the message sent
     */
    function _sendToEvmWormHoleRelayer(
        uint256 value,
        bytes memory payload,
        uint256 costForReturnDelivery,
        address refundAddress
    ) internal returns(uint64 sequence) {
        return wormholeRelayer.sendPayloadToEvm{value: value}(
            hubChainId(),
            hubContractAddress(),
            payload,
            costForReturnDelivery,
            defaultGasLimitRoundtrip(),
            hubChainId(),
            refundAddress
        );
    }

    /**
     * @dev Sends a TokenBridge message with the given payload, asset, and amount
     * @param payload - the payload to be sent
     * @param asset - the address of the asset to be sent
     * @param amount - the amount of the asset to be sent
     * @param costForReturnDelivery - the cost to forward tokens back from the Hub
     * @return sequence - the sequence number of the message sent
     */
    function _sendTokenBridgeMessage(bytes memory payload, address asset, uint256 amount, uint256 costForReturnDelivery)
        internal
        returns (uint64)
    {
        IERC20(asset).safeTransferFrom(msg.sender, address(this), amount);

        return sendTokenWithPayloadToEvm(
            hubChainId(),
            hubContractAddress(),
            payload,
            costForReturnDelivery,
            defaultGasLimitRoundtrip(),
            asset,
            amount,
            chainId(), // refundChain
            msg.sender // refundAddress
        );
    }

    /**
     * @dev Sends a TokenBridge message with the given payload and amount in native tokens
     * @param payload - the payload to be sent
     * @param amount - the amount of native tokens to be sent
     * @param costForReturnDelivery - the cost to forward tokens back from the Hub
     * @return sequence - the sequence number of the message sent
     */
    function _sendTokenBridgeMessageNative(bytes memory payload, uint256 amount, uint256 costForReturnDelivery)
        internal
        returns (uint64)
    {
        uint256 amountPlusFee = amount + tokenBridge.wormhole().messageFee();
        uint64 sequence = tokenBridge.wrapAndTransferETHWithPayload{value: amountPlusFee}(
            hubChainId(), toWormholeFormat(hubContractAddress()), 0, payload
        );

        VaaKey[] memory additionalVaas = new VaaKey[](1);
        additionalVaas[0] = VaaKey(chainId(), toWormholeFormat(address(tokenBridge)), sequence);

        uint256 deliveryCost = getDeliveryCostRoundtrip(costForReturnDelivery, false);
        return wormholeRelayer.sendVaasToEvm{value: deliveryCost}(
            hubChainId(),
            hubContractAddress(),
            payload,
            costForReturnDelivery,
            defaultGasLimitRoundtrip(),
            additionalVaas,
            chainId(), // refundChain
            msg.sender // refundAddress
        );
    }

    /**
     * @dev Sends USDC with the given payload via wormhole's CCTP integration
     * @param payload - the payload to be sent
     * @param amount - the amount of the asset to be sent
     * @param costForReturnDelivery - the cost to forward tokens back from the Hub
     * @return sequence - the sequence number of the message sent
     */
    function _sendUSDCWithPayload(bytes memory payload, uint256 amount, uint256 costForReturnDelivery)
        internal
        returns (uint64)
    {
        IERC20(USDC).safeTransferFrom(msg.sender, address(this), amount);

        return sendUSDCWithPayloadToEvm(
            hubChainId(),
            hubContractAddress(),
            payload,
            costForReturnDelivery,
            defaultGasLimitRoundtrip(),
            amount,
            chainId(), // refundChain
            msg.sender // refundAddress
        );
    }

    /**
     * @dev Returns whether we are using CCTP while receiving wormhole messages, as specified in the encoded `payload`
     * @param payload - the payload received
     */
    function messageWithCCTP(bytes memory payload) internal pure override returns (bool) {
        (,, bool withCCTP) = _decodePayload(payload);

        // NOTE: we are not checking _state.isUsingCCTP here in order to handle it as best effort
        return withCCTP;
    }

    function receiveWormholeMessages(
          bytes memory payload,
          bytes[] memory additionalVaas,
          bytes32 sourceAddress,
          uint16 sourceChain,
          bytes32 deliveryHash
    ) public virtual override(TokenReceiverWithCCTP) payable {
        if (additionalVaas.length == 0) {
            (address recipient,,) = _decodePayload(payload);
            // send any refund back to the recipient
            if (msg.value > 0) {
                (bool refundSuccess,) = recipient.call{value: msg.value}("");
                require(refundSuccess, "refund failed");
            }
        } else {
            super.receiveWormholeMessages(payload, additionalVaas, sourceAddress, sourceChain, deliveryHash);
        }
    }

    /**
     * @dev Receives a payload and tokens, and processes them
     * @param payload - the payload received
     * @param receivedTokens - the tokens received
     * @param sourceAddress - the source address of the tokens
     * @param sourceChain - the source chain of the tokens
     * @param deliveryHash - the delivery hash of the tokens
     */
    function receivePayloadAndTokens(
        bytes memory payload,
        TokenReceived[] memory receivedTokens,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    )
        internal
        override
        onlyWormholeRelayer
        isRegisteredSender(sourceChain, sourceAddress)
        replayProtect(deliveryHash)
    {
        require(receivedTokens.length == 1, "Expecting one transfer");

        TokenReceived memory receivedToken = receivedTokens[0];
        (address recipient, bool unwrap,) = _decodePayload(payload);
        if (unwrap) {
            // unwrap and transfer to recipient
            tokenBridge.WETH().withdraw(receivedToken.amount);
            (bool withdrawSuccess,) = recipient.call{value: receivedToken.amount}("");
            require(withdrawSuccess, "withdraw to native failed");
        } else {
            IERC20(receivedToken.tokenAddress).safeTransfer(recipient, receivedToken.amount);
        }

        // send any refund back to the recipient
        if (msg.value > 0) {
            (bool refundSuccess,) = recipient.call{value: msg.value}("");
            require(refundSuccess, "refund failed");
        }
    }

    /**
     * @dev Receives a payload and USDC via CCTP
     * @param userPayload - the payload received
     * @param amountUSDCReceived - the amount of USDC received
     * @param sourceAddress - the source address of the tokens
     * @param sourceChain - the source chain of the tokens
     * @param deliveryHash - the delivery hash of the tokens
     */
    function receivePayloadAndUSDC(
        bytes memory userPayload,
        uint256 amountUSDCReceived,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    )
        internal
        override
        onlyWormholeRelayer
        isRegisteredSender(sourceChain, sourceAddress)
        replayProtect(deliveryHash)
    {
        (address recipient,,) = abi.decode(userPayload, (address, bool, bool));

        IERC20(USDC).safeTransfer(recipient, amountUSDCReceived);

        // send any refund back to the recipient
        if (msg.value > 0) {
            (bool refundSuccess,) = recipient.call{value: msg.value}("");
            require(refundSuccess, "refund failed");
        }
    }

    /**
     * @dev Decodes `payload` into expected arguments
     * @param payload - the payload received
     */
    function _decodePayload(
        bytes memory payload
    ) internal pure returns (address recipient, bool unwrap, bool withCCTP) {
        (, bytes memory userPayload) = abi.decode(payload, (uint256, bytes));
        (recipient, unwrap, withCCTP) = abi.decode(userPayload, (address, bool, bool));
    }

    /**
     * @notice fallback function to receive unwrapped native asset
     */
    fallback() external payable {}

    /**
     * @notice Function to receive ETH
     */
    receive() external payable {}
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (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) (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/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 v5.0.1) (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: Apache 2

pragma solidity ^0.8.13;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./interfaces/IWormholeReceiver.sol";
import "./interfaces/IWormholeRelayer.sol";
import "./interfaces/ITokenBridge.sol";
import "./interfaces/CCTPInterfaces/ITokenMessenger.sol";
import "./interfaces/CCTPInterfaces/IMessageTransmitter.sol";

import "./Utils.sol";
import {TokenBase} from "./WormholeRelayerSDK.sol";

library CCTPMessageLib {
    uint8 constant CCTP_KEY_TYPE = 2;

    // encoded using abi.encodePacked(domain, nonce)
    struct CCTPKey {
        uint32 domain;
        uint64 nonce;
    }

    // encoded using abi.encode(message, signature)
    struct CCTPMessage {
        bytes message;
        bytes signature;
    }
}

abstract contract CCTPBase is TokenBase {
    ITokenMessenger public circleTokenMessenger;
    IMessageTransmitter public circleMessageTransmitter;
    address public USDC;

    function __CCTPBase_init(
        address _wormholeRelayer,
        address _tokenBridge,
        address _wormhole,
        address _circleMessageTransmitter,
        address _circleTokenMessenger,
        address _USDC
    ) public {
        require(!_wormholeRelayerInitialized, "WRI");
        TokenBase.__TokenBase_init(_wormholeRelayer, _tokenBridge, _wormhole);
        circleTokenMessenger = ITokenMessenger(_circleTokenMessenger);
        circleMessageTransmitter = IMessageTransmitter(_circleMessageTransmitter);
        USDC = _USDC;
    }

    function getCCTPDomain(uint16 chain) internal pure returns (uint32) {
        if (chain == 2) {
            return 0;
        } else if (chain == 6) {
            return 1;
        } else if (chain == 23) {
            return 3;
        } else if (chain == 24) {
            return 2;
        } else {
            revert("Wrong CCTP Domain");
        }
    }

    function redeemUSDC(bytes memory cctpMessage) internal returns (uint256 amount) {
        (bytes memory message, bytes memory signature) = abi.decode(cctpMessage, (bytes, bytes));
        uint256 beforeBalance = IERC20(USDC).balanceOf(address(this));
        circleMessageTransmitter.receiveMessage(message, signature);
        return IERC20(USDC).balanceOf(address(this)) - beforeBalance;
    }
}

abstract contract CCTPSender is CCTPBase {
    uint8 internal constant CONSISTENCY_LEVEL_FINALIZED = 15;

    using CCTPMessageLib for *;

    /**
     * transferTokens wraps common boilerplate for sending tokens to another chain using IWormholeRelayer
     * - approves tokenBridge to spend 'amount' of 'token'
     * - emits token transfer VAA
     * - returns VAA key for inclusion in WormholeRelayer `additionalVaas` argument
     *
     * Note: this requires that only the targetAddress can redeem transfers.
     *
     */

    function transferUSDC(uint256 amount, uint16 targetChain, address targetAddress)
        internal
        returns (MessageKey memory)
    {
        SafeERC20.forceApprove(IERC20(USDC), address(circleTokenMessenger), amount);
        uint64 nonce = circleTokenMessenger.depositForBurnWithCaller(
            amount,
            getCCTPDomain(targetChain),
            addressToBytes32CCTP(targetAddress),
            USDC,
            addressToBytes32CCTP(targetAddress)
        );
        return MessageKey(
            CCTPMessageLib.CCTP_KEY_TYPE, abi.encodePacked(getCCTPDomain(wormhole.chainId()), nonce)
        );
    }

    function sendUSDCWithPayloadToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit,
        uint256 amount,
        uint16 refundChain,
        address refundAddress
    ) internal returns (uint64 sequence) {
        MessageKey[] memory messageKeys = new MessageKey[](1);
        messageKeys[0] = transferUSDC(amount, targetChain, targetAddress);

        address defaultDeliveryProvider = wormholeRelayer.getDefaultDeliveryProvider();

        (uint256 cost,) = wormholeRelayer.quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit);

        sequence = wormholeRelayer.sendToEvm{value: cost}(
            targetChain,
            targetAddress,
            abi.encode(amount, payload),
            receiverValue,
            0,
            gasLimit,
            refundChain,
            refundAddress,
            defaultDeliveryProvider,
            messageKeys,
            CONSISTENCY_LEVEL_FINALIZED
        );
    }

    function addressToBytes32CCTP(address addr) private pure returns (bytes32) {
        return bytes32(uint256(uint160(addr)));
    }
}

abstract contract CCTPReceiver is CCTPBase {
    function receiveWormholeMessages(
        bytes memory payload,
        bytes[] memory additionalMessages,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) external virtual payable {
        _receiveWormholeMessagesWithCCTP(payload, additionalMessages, sourceAddress, sourceChain, deliveryHash);
    }

    function _receiveWormholeMessagesWithCCTP(
        bytes memory payload,
        bytes[] memory additionalMessages,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) internal {
        require(additionalMessages.length <= 1, "CCTP: At most one Message is supported");

        uint256 amountUSDCReceived;
        if (additionalMessages.length == 1) {
            amountUSDCReceived = redeemUSDC(additionalMessages[0]);
        }

        (uint256 amount, bytes memory userPayload) = abi.decode(payload, (uint256, bytes));

        // Check that the correct amount was received
        // It is important to verify that the 'USDC' received is
        require(amount == amountUSDCReceived, "Wrong amount received");

        receivePayloadAndUSDC(userPayload, amountUSDCReceived, sourceAddress, sourceChain, deliveryHash);
    }

    function receivePayloadAndUSDC(
        bytes memory payload,
        uint256 amountUSDCReceived,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) internal virtual {}
}

/*
 * Copyright (c) 2022, Circle Internet Financial Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

import "./IRelayer.sol";
import "./IReceiver.sol";

/**
 * @title IMessageTransmitter
 * @notice Interface for message transmitters, which both relay and receive messages.
 */
interface IMessageTransmitter is IRelayer, IReceiver {

}

/*
 * Copyright (c) 2022, Circle Internet Financial Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

/**
 * @title IReceiver
 * @notice Receives messages on destination chain and forwards them to IMessageDestinationHandler
 */
interface IReceiver {
    /**
     * @notice Receives an incoming message, validating the header and passing
     * the body to application-specific handler.
     * @param message The message raw bytes
     * @param signature The message signature
     * @return success bool, true if successful
     */
    function receiveMessage(bytes calldata message, bytes calldata signature)
        external
        returns (bool success);
}

/*
 * Copyright (c) 2022, Circle Internet Financial Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.0;

/**
 * @title IRelayer
 * @notice Sends messages from source domain to destination domain
 */
interface IRelayer {
    /**
     * @notice Sends an outgoing message from the source domain.
     * @dev Increment nonce, format the message, and emit `MessageSent` event with message information.
     * @param destinationDomain Domain of destination chain
     * @param recipient Address of message recipient on destination domain as bytes32
     * @param messageBody Raw bytes content of message
     * @return nonce reserved by message
     */
    function sendMessage(
        uint32 destinationDomain,
        bytes32 recipient,
        bytes calldata messageBody
    ) external returns (uint64);

    /**
     * @notice Sends an outgoing message from the source domain, with a specified caller on the
     * destination domain.
     * @dev Increment nonce, format the message, and emit `MessageSent` event with message information.
     * WARNING: if the `destinationCaller` does not represent a valid address as bytes32, then it will not be possible
     * to broadcast the message on the destination domain. This is an advanced feature, and the standard
     * sendMessage() should be preferred for use cases where a specific destination caller is not required.
     * @param destinationDomain Domain of destination chain
     * @param recipient Address of message recipient on destination domain as bytes32
     * @param destinationCaller caller on the destination domain, as bytes32
     * @param messageBody Raw bytes content of message
     * @return nonce reserved by message
     */
    function sendMessageWithCaller(
        uint32 destinationDomain,
        bytes32 recipient,
        bytes32 destinationCaller,
        bytes calldata messageBody
    ) external returns (uint64);

    /**
     * @notice Replace a message with a new message body and/or destination caller.
     * @dev The `originalAttestation` must be a valid attestation of `originalMessage`.
     * @param originalMessage original message to replace
     * @param originalAttestation attestation of `originalMessage`
     * @param newMessageBody new message body of replaced message
     * @param newDestinationCaller the new destination caller
     */
    function replaceMessage(
        bytes calldata originalMessage,
        bytes calldata originalAttestation,
        bytes calldata newMessageBody,
        bytes32 newDestinationCaller
    ) external;
}

pragma solidity ^0.8.0;

interface ITokenMessenger {
   /**
     * @notice Deposits and burns tokens from sender to be minted on destination domain. The mint
     * on the destination domain must be called by `destinationCaller`.
     * WARNING: if the `destinationCaller` does not represent a valid address as bytes32, then it will not be possible
     * to broadcast the message on the destination domain. This is an advanced feature, and the standard
     * depositForBurn() should be preferred for use cases where a specific destination caller is not required.
     * Emits a `DepositForBurn` event.
     * @dev reverts if:
     * - given destinationCaller is zero address
     * - given burnToken is not supported
     * - given destinationDomain has no TokenMessenger registered
     * - transferFrom() reverts. For example, if sender's burnToken balance or approved allowance
     * to this contract is less than `amount`.
     * - burn() reverts. For example, if `amount` is 0.
     * - MessageTransmitter returns false or reverts.
     * @param amount amount of tokens to burn
     * @param destinationDomain destination domain
     * @param mintRecipient address of mint recipient on destination domain
     * @param burnToken address of contract to burn deposited tokens, on local domain
     * @param destinationCaller caller on the destination domain, as bytes32
     * @return nonce unique nonce reserved by message
     */
    function depositForBurnWithCaller(
        uint256 amount,
        uint32 destinationDomain,
        bytes32 mintRecipient,
        address burnToken,
        bytes32 destinationCaller
    ) external returns (uint64 nonce);
}

// contracts/Bridge.sol
// SPDX-License-Identifier: Apache 2

pragma solidity ^0.8.0;

import "./IWETH.sol";
import "./IWormhole.sol";

interface ITokenBridge {
    struct Transfer {
        uint8 payloadID;
        uint256 amount;
        bytes32 tokenAddress;
        uint16 tokenChain;
        bytes32 to;
        uint16 toChain;
        uint256 fee;
    }

    struct TransferWithPayload {
        uint8 payloadID;
        uint256 amount;
        bytes32 tokenAddress;
        uint16 tokenChain;
        bytes32 to;
        uint16 toChain;
        bytes32 fromAddress;
        bytes payload;
    }

    struct AssetMeta {
        uint8 payloadID;
        bytes32 tokenAddress;
        uint16 tokenChain;
        uint8 decimals;
        bytes32 symbol;
        bytes32 name;
    }

    struct RegisterChain {
        bytes32 module;
        uint8 action;
        uint16 chainId;
        uint16 emitterChainID;
        bytes32 emitterAddress;
    }

    struct UpgradeContract {
        bytes32 module;
        uint8 action;
        uint16 chainId;
        bytes32 newContract;
    }

    struct RecoverChainId {
        bytes32 module;
        uint8 action;
        uint256 evmChainId;
        uint16 newChainId;
    }

    event ContractUpgraded(address indexed oldContract, address indexed newContract);

    function _parseTransferCommon(bytes memory encoded) external pure returns (Transfer memory transfer);

    function attestToken(address tokenAddress, uint32 nonce) external payable returns (uint64 sequence);

    function wrapAndTransferETH(uint16 recipientChain, bytes32 recipient, uint256 arbiterFee, uint32 nonce)
        external
        payable
        returns (uint64 sequence);

    function wrapAndTransferETHWithPayload(uint16 recipientChain, bytes32 recipient, uint32 nonce, bytes memory payload)
        external
        payable
        returns (uint64 sequence);

    function transferTokens(
        address token,
        uint256 amount,
        uint16 recipientChain,
        bytes32 recipient,
        uint256 arbiterFee,
        uint32 nonce
    ) external payable returns (uint64 sequence);

    function transferTokensWithPayload(
        address token,
        uint256 amount,
        uint16 recipientChain,
        bytes32 recipient,
        uint32 nonce,
        bytes memory payload
    ) external payable returns (uint64 sequence);

    function updateWrapped(bytes memory encodedVm) external returns (address token);

    function createWrapped(bytes memory encodedVm) external returns (address token);

    function completeTransferWithPayload(bytes memory encodedVm) external returns (bytes memory);

    function completeTransferAndUnwrapETHWithPayload(bytes memory encodedVm) external returns (bytes memory);

    function completeTransfer(bytes memory encodedVm) external;

    function completeTransferAndUnwrapETH(bytes memory encodedVm) external;

    function encodeAssetMeta(AssetMeta memory meta) external pure returns (bytes memory encoded);

    function encodeTransfer(Transfer memory transfer) external pure returns (bytes memory encoded);

    function encodeTransferWithPayload(TransferWithPayload memory transfer)
        external
        pure
        returns (bytes memory encoded);

    function parsePayloadID(bytes memory encoded) external pure returns (uint8 payloadID);

    function parseAssetMeta(bytes memory encoded) external pure returns (AssetMeta memory meta);

    function parseTransfer(bytes memory encoded) external pure returns (Transfer memory transfer);

    function parseTransferWithPayload(bytes memory encoded)
        external
        pure
        returns (TransferWithPayload memory transfer);

    function governanceActionIsConsumed(bytes32 hash) external view returns (bool);

    function isInitialized(address impl) external view returns (bool);

    function isTransferCompleted(bytes32 hash) external view returns (bool);

    function wormhole() external view returns (IWormhole);

    function chainId() external view returns (uint16);

    function evmChainId() external view returns (uint256);

    function isFork() external view returns (bool);

    function governanceChainId() external view returns (uint16);

    function governanceContract() external view returns (bytes32);

    function wrappedAsset(uint16 tokenChainId, bytes32 tokenAddress) external view returns (address);

    function bridgeContracts(uint16 chainId_) external view returns (bytes32);

    function tokenImplementation() external view returns (address);

    function WETH() external view returns (IWETH);

    function outstandingBridged(address token) external view returns (uint256);

    function isWrappedAsset(address token) external view returns (bool);

    function finality() external view returns (uint8);

    function implementation() external view returns (address);

    function initialize() external;

    function registerChain(bytes memory encodedVM) external;

    function upgrade(bytes memory encodedVM) external;

    function submitRecoverChainId(bytes memory encodedVM) external;

    function parseRegisterChain(bytes memory encoded) external pure returns (RegisterChain memory chain);

    function parseUpgrade(bytes memory encoded) external pure returns (UpgradeContract memory chain);

    function parseRecoverChainId(bytes memory encodedRecoverChainId)
        external
        pure
        returns (RecoverChainId memory rci);
}

// contracts/Bridge.sol
// SPDX-License-Identifier: Apache 2

pragma solidity ^0.8.0;

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

interface IWETH is IERC20 {
    function deposit() external payable;
    function withdraw(uint256 amount) external;
}

// contracts/Messages.sol
// SPDX-License-Identifier: Apache 2

pragma solidity ^0.8.0;

interface IWormhole {
    struct GuardianSet {
        address[] keys;
        uint32 expirationTime;
    }

    struct Signature {
        bytes32 r;
        bytes32 s;
        uint8 v;
        uint8 guardianIndex;
    }

    struct VM {
        uint8 version;
        uint32 timestamp;
        uint32 nonce;
        uint16 emitterChainId;
        bytes32 emitterAddress;
        uint64 sequence;
        uint8 consistencyLevel;
        bytes payload;
        uint32 guardianSetIndex;
        Signature[] signatures;
        bytes32 hash;
    }

    struct ContractUpgrade {
        bytes32 module;
        uint8 action;
        uint16 chain;
        address newContract;
    }

    struct GuardianSetUpgrade {
        bytes32 module;
        uint8 action;
        uint16 chain;
        GuardianSet newGuardianSet;
        uint32 newGuardianSetIndex;
    }

    struct SetMessageFee {
        bytes32 module;
        uint8 action;
        uint16 chain;
        uint256 messageFee;
    }

    struct TransferFees {
        bytes32 module;
        uint8 action;
        uint16 chain;
        uint256 amount;
        bytes32 recipient;
    }

    struct RecoverChainId {
        bytes32 module;
        uint8 action;
        uint256 evmChainId;
        uint16 newChainId;
    }

    event LogMessagePublished(
        address indexed sender, uint64 sequence, uint32 nonce, bytes payload, uint8 consistencyLevel
    );
    event ContractUpgraded(address indexed oldContract, address indexed newContract);
    event GuardianSetAdded(uint32 indexed index);

    function publishMessage(uint32 nonce, bytes memory payload, uint8 consistencyLevel)
        external
        payable
        returns (uint64 sequence);

    function initialize() external;

    function parseAndVerifyVM(bytes calldata encodedVM)
        external
        view
        returns (VM memory vm, bool valid, string memory reason);

    function verifyVM(VM memory vm) external view returns (bool valid, string memory reason);

    function verifySignatures(bytes32 hash, Signature[] memory signatures, GuardianSet memory guardianSet)
        external
        pure
        returns (bool valid, string memory reason);

    function parseVM(bytes memory encodedVM) external pure returns (VM memory vm);

    function quorum(uint256 numGuardians) external pure returns (uint256 numSignaturesRequiredForQuorum);

    function getGuardianSet(uint32 index) external view returns (GuardianSet memory);

    function getCurrentGuardianSetIndex() external view returns (uint32);

    function getGuardianSetExpiry() external view returns (uint32);

    function governanceActionIsConsumed(bytes32 hash) external view returns (bool);

    function isInitialized(address impl) external view returns (bool);

    function chainId() external view returns (uint16);

    function isFork() external view returns (bool);

    function governanceChainId() external view returns (uint16);

    function governanceContract() external view returns (bytes32);

    function messageFee() external view returns (uint256);

    function evmChainId() external view returns (uint256);

    function nextSequence(address emitter) external view returns (uint64);

    function parseContractUpgrade(bytes memory encodedUpgrade) external pure returns (ContractUpgrade memory cu);

    function parseGuardianSetUpgrade(bytes memory encodedUpgrade)
        external
        pure
        returns (GuardianSetUpgrade memory gsu);

    function parseSetMessageFee(bytes memory encodedSetMessageFee) external pure returns (SetMessageFee memory smf);

    function parseTransferFees(bytes memory encodedTransferFees) external pure returns (TransferFees memory tf);

    function parseRecoverChainId(bytes memory encodedRecoverChainId)
        external
        pure
        returns (RecoverChainId memory rci);

    function submitContractUpgrade(bytes memory _vm) external;

    function submitSetMessageFee(bytes memory _vm) external;

    function submitNewGuardianSet(bytes memory _vm) external;

    function submitTransferFees(bytes memory _vm) external;

    function submitRecoverChainId(bytes memory _vm) external;
}

// SPDX-License-Identifier: Apache 2

pragma solidity ^0.8.0;

/**
 * @notice Interface for a contract which can receive Wormhole messages.
 */
interface IWormholeReceiver {
    /**
     * @notice When a `send` is performed with this contract as the target, this function will be
     *     invoked by the WormholeRelayer contract
     *
     * NOTE: This function should be restricted such that only the Wormhole Relayer contract can call it.
     *
     * We also recommend that this function:
     *   - Stores all received `deliveryHash`s in a mapping `(bytes32 => bool)`, and
     *       on every call, checks that deliveryHash has not already been stored in the
     *       map (This is to prevent other users maliciously trying to relay the same message)
     *   - Checks that `sourceChain` and `sourceAddress` are indeed who
     *       you expect to have requested the calling of `send` on the source chain
     *
     * The invocation of this function corresponding to the `send` request will have msg.value equal
     *   to the receiverValue specified in the send request.
     *
     * If the invocation of this function reverts or exceeds the gas limit
     *   specified by the send requester, this delivery will result in a `ReceiverFailure`.
     *
     * @param payload - an arbitrary message which was included in the delivery by the
     *     requester.
     * @param additionalVaas - Additional VAAs which were requested to be included in this delivery.
     *   They are guaranteed to all be included and in the same order as was specified in the
     *     delivery request.
     * @param sourceAddress - the (wormhole format) address on the sending chain which requested
     *     this delivery.
     * @param sourceChain - the wormhole chain ID where this delivery was requested.
     * @param deliveryHash - the VAA hash of the deliveryVAA.
     *
     * NOTE: These signedVaas are NOT verified by the Wormhole core contract prior to being provided
     *     to this call. Always make sure `parseAndVerify()` is called on the Wormhole core contract
     *     before trusting the content of a raw VAA, otherwise the VAA may be invalid or malicious.
     */
    function receiveWormholeMessages(
        bytes memory payload,
        bytes[] memory additionalVaas,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) external payable;
}

// SPDX-License-Identifier: Apache 2

pragma solidity ^0.8.0;

/**
 * @title WormholeRelayer
 * @author
 * @notice This project allows developers to build cross-chain applications powered by Wormhole without needing to
 * write and run their own relaying infrastructure
 *
 * We implement the IWormholeRelayer interface that allows users to request a delivery provider to relay a payload (and/or additional VAAs)
 * to a chain and address of their choice.
 */

/**
 * @notice VaaKey identifies a wormhole message
 *
 * @custom:member chainId Wormhole chain ID of the chain where this VAA was emitted from
 * @custom:member emitterAddress Address of the emitter of the VAA, in Wormhole bytes32 format
 * @custom:member sequence Sequence number of the VAA
 */
struct VaaKey {
    uint16 chainId;
    bytes32 emitterAddress;
    uint64 sequence;
}

// 0-127 are reserved for standardized KeyTypes, 128-255 are for custom use
uint8 constant VAA_KEY_TYPE = 1;

struct MessageKey {
    uint8 keyType; // 0-127 are reserved for standardized KeyTypes, 128-255 are for custom use
    bytes encodedKey;
}


interface IWormholeRelayerBase {
    event SendEvent(
        uint64 indexed sequence, uint256 deliveryQuote, uint256 paymentForExtraReceiverValue
    );

    function getRegisteredWormholeRelayerContract(uint16 chainId) external view returns (bytes32);

    /**
     * @notice Returns true if a delivery has been attempted for the given deliveryHash
     * Note: invalid deliveries where the tx reverts are not considered attempted
     */
    function deliveryAttempted(bytes32 deliveryHash) external view returns (bool attempted);

    /**
     * @notice block number at which a delivery was successfully executed
     */
    function deliverySuccessBlock(bytes32 deliveryHash) external view returns (uint256 blockNumber);

    /**
     * @notice block number of the latest attempt to execute a delivery that failed
     */
    function deliveryFailureBlock(bytes32 deliveryHash) external view returns (uint256 blockNumber);
}

/**
 * @title IWormholeRelayerSend
 * @notice The interface to request deliveries
 */
interface IWormholeRelayerSend is IWormholeRelayerBase {

    /**
     * @notice Publishes an instruction for the default delivery provider
     * to relay a payload to the address `targetAddress` on chain `targetChain`
     * with gas limit `gasLimit` and `msg.value` equal to `receiverValue`
     *
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to `quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit)`
     *
     * Any refunds (from leftover gas) will be paid to the delivery provider. In order to receive the refunds, use the `sendPayloadToEvm` function
     * with `refundChain` and `refundAddress` as parameters
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver)
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param gasLimit gas limit with which to call `targetAddress`.
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function sendPayloadToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the default delivery provider
     * to relay a payload to the address `targetAddress` on chain `targetChain`
     * with gas limit `gasLimit` and `msg.value` equal to `receiverValue`
     *
     * Any refunds (from leftover gas) will be sent to `refundAddress` on chain `refundChain`
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to `quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit)`
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver)
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param gasLimit gas limit with which to call `targetAddress`. Any units of gas unused will be refunded according to the
     *        `targetChainRefundPerGasUnused` rate quoted by the delivery provider
     * @param refundChain The chain to deliver any refund to, in Wormhole Chain ID format
     * @param refundAddress The address on `refundChain` to deliver any refund to
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function sendPayloadToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit,
        uint16 refundChain,
        address refundAddress
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the default delivery provider
     * to relay a payload and VAAs specified by `vaaKeys` to the address `targetAddress` on chain `targetChain`
     * with gas limit `gasLimit` and `msg.value` equal to `receiverValue`
     *
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to `quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit)`
     *
     * Any refunds (from leftover gas) will be paid to the delivery provider. In order to receive the refunds, use the `sendVaasToEvm` function
     * with `refundChain` and `refundAddress` as parameters
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver)
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param gasLimit gas limit with which to call `targetAddress`.
     * @param vaaKeys Additional VAAs to pass in as parameter in call to `targetAddress`
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function sendVaasToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit,
        VaaKey[] memory vaaKeys
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the default delivery provider
     * to relay a payload and VAAs specified by `vaaKeys` to the address `targetAddress` on chain `targetChain`
     * with gas limit `gasLimit` and `msg.value` equal to `receiverValue`
     *
     * Any refunds (from leftover gas) will be sent to `refundAddress` on chain `refundChain`
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to `quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit)`
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver)
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param gasLimit gas limit with which to call `targetAddress`. Any units of gas unused will be refunded according to the
     *        `targetChainRefundPerGasUnused` rate quoted by the delivery provider
     * @param vaaKeys Additional VAAs to pass in as parameter in call to `targetAddress`
     * @param refundChain The chain to deliver any refund to, in Wormhole Chain ID format
     * @param refundAddress The address on `refundChain` to deliver any refund to
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function sendVaasToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit,
        VaaKey[] memory vaaKeys,
        uint16 refundChain,
        address refundAddress
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the delivery provider at `deliveryProviderAddress`
     * to relay a payload and VAAs specified by `vaaKeys` to the address `targetAddress` on chain `targetChain`
     * with gas limit `gasLimit` and `msg.value` equal to
     * receiverValue + (arbitrary amount that is paid for by paymentForExtraReceiverValue of this chain's wei) in targetChain wei.
     *
     * Any refunds (from leftover gas) will be sent to `refundAddress` on chain `refundChain`
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to
     * quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit, deliveryProviderAddress) + paymentForExtraReceiverValue
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver)
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param paymentForExtraReceiverValue amount (in current chain currency units) to spend on extra receiverValue
     *        (in addition to the `receiverValue` specified)
     * @param gasLimit gas limit with which to call `targetAddress`. Any units of gas unused will be refunded according to the
     *        `targetChainRefundPerGasUnused` rate quoted by the delivery provider
     * @param refundChain The chain to deliver any refund to, in Wormhole Chain ID format
     * @param refundAddress The address on `refundChain` to deliver any refund to
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @param vaaKeys Additional VAAs to pass in as parameter in call to `targetAddress`
     * @param consistencyLevel Consistency level with which to publish the delivery instructions - see
     *        https://book.wormhole.com/wormhole/3_coreLayerContracts.html?highlight=consistency#consistency-levels
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function sendToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 paymentForExtraReceiverValue,
        uint256 gasLimit,
        uint16 refundChain,
        address refundAddress,
        address deliveryProviderAddress,
        VaaKey[] memory vaaKeys,
        uint8 consistencyLevel
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the delivery provider at `deliveryProviderAddress`
     * to relay a payload and external messages specified by `messageKeys` to the address `targetAddress` on chain `targetChain`
     * with gas limit `gasLimit` and `msg.value` equal to
     * receiverValue + (arbitrary amount that is paid for by paymentForExtraReceiverValue of this chain's wei) in targetChain wei.
     *
     * Any refunds (from leftover gas) will be sent to `refundAddress` on chain `refundChain`
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to
     * quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit, deliveryProviderAddress) + paymentForExtraReceiverValue
     *
     * MessageKeys can specify wormhole messages (VaaKeys) or other types of messages (ex. USDC CCTP attestations). Ensure the selected
     * Note: DeliveryProvider supports all the MessageKey.keyType values specified or it will not be delivered!
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver)
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param paymentForExtraReceiverValue amount (in current chain currency units) to spend on extra receiverValue
     *        (in addition to the `receiverValue` specified)
     * @param gasLimit gas limit with which to call `targetAddress`. Any units of gas unused will be refunded according to the
     *        `targetChainRefundPerGasUnused` rate quoted by the delivery provider
     * @param refundChain The chain to deliver any refund to, in Wormhole Chain ID format
     * @param refundAddress The address on `refundChain` to deliver any refund to
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @param messageKeys Additional messagess to pass in as parameter in call to `targetAddress`
     * @param consistencyLevel Consistency level with which to publish the delivery instructions - see
     *        https://book.wormhole.com/wormhole/3_coreLayerContracts.html?highlight=consistency#consistency-levels
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function sendToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 paymentForExtraReceiverValue,
        uint256 gasLimit,
        uint16 refundChain,
        address refundAddress,
        address deliveryProviderAddress,
        MessageKey[] memory messageKeys,
        uint8 consistencyLevel
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the delivery provider at `deliveryProviderAddress`
     * to relay a payload and VAAs specified by `vaaKeys` to the address `targetAddress` on chain `targetChain`
     * with `msg.value` equal to
     * receiverValue + (arbitrary amount that is paid for by paymentForExtraReceiverValue of this chain's wei) in targetChain wei.
     *
     * Any refunds (from leftover gas) will be sent to `refundAddress` on chain `refundChain`
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to
     * quoteDeliveryPrice(targetChain, receiverValue, encodedExecutionParameters, deliveryProviderAddress) + paymentForExtraReceiverValue
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver), in Wormhole bytes32 format
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param paymentForExtraReceiverValue amount (in current chain currency units) to spend on extra receiverValue
     *        (in addition to the `receiverValue` specified)
     * @param encodedExecutionParameters encoded information on how to execute delivery that may impact pricing
     *        e.g. for version EVM_V1, this is a struct that encodes the `gasLimit` with which to call `targetAddress`
     * @param refundChain The chain to deliver any refund to, in Wormhole Chain ID format
     * @param refundAddress The address on `refundChain` to deliver any refund to, in Wormhole bytes32 format
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @param vaaKeys Additional VAAs to pass in as parameter in call to `targetAddress`
     * @param consistencyLevel Consistency level with which to publish the delivery instructions - see
     *        https://book.wormhole.com/wormhole/3_coreLayerContracts.html?highlight=consistency#consistency-levels
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function send(
        uint16 targetChain,
        bytes32 targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 paymentForExtraReceiverValue,
        bytes memory encodedExecutionParameters,
        uint16 refundChain,
        bytes32 refundAddress,
        address deliveryProviderAddress,
        VaaKey[] memory vaaKeys,
        uint8 consistencyLevel
    ) external payable returns (uint64 sequence);

    /**
     * @notice Publishes an instruction for the delivery provider at `deliveryProviderAddress`
     * to relay a payload and VAAs specified by `vaaKeys` to the address `targetAddress` on chain `targetChain`
     * with `msg.value` equal to
     * receiverValue + (arbitrary amount that is paid for by paymentForExtraReceiverValue of this chain's wei) in targetChain wei.
     *
     * Any refunds (from leftover gas) will be sent to `refundAddress` on chain `refundChain`
     * `targetAddress` must implement the IWormholeReceiver interface
     *
     * This function must be called with `msg.value` equal to
     * quoteDeliveryPrice(targetChain, receiverValue, encodedExecutionParameters, deliveryProviderAddress) + paymentForExtraReceiverValue
     *
     * MessageKeys can specify wormhole messages (VaaKeys) or other types of messages (ex. USDC CCTP attestations). Ensure the selected
     * Note: DeliveryProvider supports all the MessageKey.keyType values specified or it will not be delivered!
     *
     * @param targetChain in Wormhole Chain ID format
     * @param targetAddress address to call on targetChain (that implements IWormholeReceiver), in Wormhole bytes32 format
     * @param payload arbitrary bytes to pass in as parameter in call to `targetAddress`
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param paymentForExtraReceiverValue amount (in current chain currency units) to spend on extra receiverValue
     *        (in addition to the `receiverValue` specified)
     * @param encodedExecutionParameters encoded information on how to execute delivery that may impact pricing
     *        e.g. for version EVM_V1, this is a struct that encodes the `gasLimit` with which to call `targetAddress`
     * @param refundChain The chain to deliver any refund to, in Wormhole Chain ID format
     * @param refundAddress The address on `refundChain` to deliver any refund to, in Wormhole bytes32 format
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @param messageKeys Additional messagess to pass in as parameter in call to `targetAddress`
     * @param consistencyLevel Consistency level with which to publish the delivery instructions - see
     *        https://book.wormhole.com/wormhole/3_coreLayerContracts.html?highlight=consistency#consistency-levels
     * @return sequence sequence number of published VAA containing delivery instructions
     */
    function send(
        uint16 targetChain,
        bytes32 targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 paymentForExtraReceiverValue,
        bytes memory encodedExecutionParameters,
        uint16 refundChain,
        bytes32 refundAddress,
        address deliveryProviderAddress,
        MessageKey[] memory messageKeys,
        uint8 consistencyLevel
    ) external payable returns (uint64 sequence);

    /**
     * @notice Requests a previously published delivery instruction to be redelivered
     * (e.g. with a different delivery provider)
     *
     * This function must be called with `msg.value` equal to
     * quoteEVMDeliveryPrice(targetChain, newReceiverValue, newGasLimit, newDeliveryProviderAddress)
     *
     *  @notice *** This will only be able to succeed if the following is true **
     *         - newGasLimit >= gas limit of the old instruction
     *         - newReceiverValue >= receiver value of the old instruction
     *         - newDeliveryProvider's `targetChainRefundPerGasUnused` >= old relay provider's `targetChainRefundPerGasUnused`
     *
     * @param deliveryVaaKey VaaKey identifying the wormhole message containing the
     *        previously published delivery instructions
     * @param targetChain The target chain that the original delivery targeted. Must match targetChain from original delivery instructions
     * @param newReceiverValue new msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param newGasLimit gas limit with which to call `targetAddress`. Any units of gas unused will be refunded according to the
     *        `targetChainRefundPerGasUnused` rate quoted by the delivery provider, to the refund chain and address specified in the original request
     * @param newDeliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @return sequence sequence number of published VAA containing redelivery instructions
     *
     * @notice *** This will only be able to succeed if the following is true **
     *         - newGasLimit >= gas limit of the old instruction
     *         - newReceiverValue >= receiver value of the old instruction
     *         - newDeliveryProvider's `targetChainRefundPerGasUnused` >= old relay provider's `targetChainRefundPerGasUnused`
     */
    function resendToEvm(
        VaaKey memory deliveryVaaKey,
        uint16 targetChain,
        uint256 newReceiverValue,
        uint256 newGasLimit,
        address newDeliveryProviderAddress
    ) external payable returns (uint64 sequence);

    /**
     * @notice Requests a previously published delivery instruction to be redelivered
     *
     *
     * This function must be called with `msg.value` equal to
     * quoteDeliveryPrice(targetChain, newReceiverValue, newEncodedExecutionParameters, newDeliveryProviderAddress)
     *
     * @param deliveryVaaKey VaaKey identifying the wormhole message containing the
     *        previously published delivery instructions
     * @param targetChain The target chain that the original delivery targeted. Must match targetChain from original delivery instructions
     * @param newReceiverValue new msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param newEncodedExecutionParameters new encoded information on how to execute delivery that may impact pricing
     *        e.g. for version EVM_V1, this is a struct that encodes the `gasLimit` with which to call `targetAddress`
     * @param newDeliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @return sequence sequence number of published VAA containing redelivery instructions
     *
     *  @notice *** This will only be able to succeed if the following is true **
     *         - (For EVM_V1) newGasLimit >= gas limit of the old instruction
     *         - newReceiverValue >= receiver value of the old instruction
     *         - (For EVM_V1) newDeliveryProvider's `targetChainRefundPerGasUnused` >= old relay provider's `targetChainRefundPerGasUnused`
     */
    function resend(
        VaaKey memory deliveryVaaKey,
        uint16 targetChain,
        uint256 newReceiverValue,
        bytes memory newEncodedExecutionParameters,
        address newDeliveryProviderAddress
    ) external payable returns (uint64 sequence);

    /**
     * @notice Returns the price to request a relay to chain `targetChain`, using the default delivery provider
     *
     * @param targetChain in Wormhole Chain ID format
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param gasLimit gas limit with which to call `targetAddress`.
     * @return nativePriceQuote Price, in units of current chain currency, that the delivery provider charges to perform the relay
     * @return targetChainRefundPerGasUnused amount of target chain currency that will be refunded per unit of gas unused,
     *         if a refundAddress is specified
     */
    function quoteEVMDeliveryPrice(
        uint16 targetChain,
        uint256 receiverValue,
        uint256 gasLimit
    ) external view returns (uint256 nativePriceQuote, uint256 targetChainRefundPerGasUnused);

    /**
     * @notice Returns the price to request a relay to chain `targetChain`, using delivery provider `deliveryProviderAddress`
     *
     * @param targetChain in Wormhole Chain ID format
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param gasLimit gas limit with which to call `targetAddress`.
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @return nativePriceQuote Price, in units of current chain currency, that the delivery provider charges to perform the relay
     * @return targetChainRefundPerGasUnused amount of target chain currency that will be refunded per unit of gas unused,
     *         if a refundAddress is specified
     */
    function quoteEVMDeliveryPrice(
        uint16 targetChain,
        uint256 receiverValue,
        uint256 gasLimit,
        address deliveryProviderAddress
    ) external view returns (uint256 nativePriceQuote, uint256 targetChainRefundPerGasUnused);

    /**
     * @notice Returns the price to request a relay to chain `targetChain`, using delivery provider `deliveryProviderAddress`
     *
     * @param targetChain in Wormhole Chain ID format
     * @param receiverValue msg.value that delivery provider should pass in for call to `targetAddress` (in targetChain currency units)
     * @param encodedExecutionParameters encoded information on how to execute delivery that may impact pricing
     *        e.g. for version EVM_V1, this is a struct that encodes the `gasLimit` with which to call `targetAddress`
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @return nativePriceQuote Price, in units of current chain currency, that the delivery provider charges to perform the relay
     * @return encodedExecutionInfo encoded information on how the delivery will be executed
     *        e.g. for version EVM_V1, this is a struct that encodes the `gasLimit` and `targetChainRefundPerGasUnused`
     *             (which is the amount of target chain currency that will be refunded per unit of gas unused,
     *              if a refundAddress is specified)
     */
    function quoteDeliveryPrice(
        uint16 targetChain,
        uint256 receiverValue,
        bytes memory encodedExecutionParameters,
        address deliveryProviderAddress
    ) external view returns (uint256 nativePriceQuote, bytes memory encodedExecutionInfo);

    /**
     * @notice Returns the (extra) amount of target chain currency that `targetAddress`
     * will be called with, if the `paymentForExtraReceiverValue` field is set to `currentChainAmount`
     *
     * @param targetChain in Wormhole Chain ID format
     * @param currentChainAmount The value that `paymentForExtraReceiverValue` will be set to
     * @param deliveryProviderAddress The address of the desired delivery provider's implementation of IDeliveryProvider
     * @return targetChainAmount The amount such that if `targetAddress` will be called with `msg.value` equal to
     *         receiverValue + targetChainAmount
     */
    function quoteNativeForChain(
        uint16 targetChain,
        uint256 currentChainAmount,
        address deliveryProviderAddress
    ) external view returns (uint256 targetChainAmount);

    /**
     * @notice Returns the address of the current default delivery provider
     * @return deliveryProvider The address of (the default delivery provider)'s contract on this source
     *   chain. This must be a contract that implements IDeliveryProvider.
     */
    function getDefaultDeliveryProvider() external view returns (address deliveryProvider);
}

/**
 * @title IWormholeRelayerDelivery
 * @notice The interface to execute deliveries. Only relevant for Delivery Providers
 */
interface IWormholeRelayerDelivery is IWormholeRelayerBase {
    enum DeliveryStatus {
        SUCCESS,
        RECEIVER_FAILURE
    }

    enum RefundStatus {
        REFUND_SENT,
        REFUND_FAIL,
        CROSS_CHAIN_REFUND_SENT,
        CROSS_CHAIN_REFUND_FAIL_PROVIDER_NOT_SUPPORTED,
        CROSS_CHAIN_REFUND_FAIL_NOT_ENOUGH
    }

    /**
     * @custom:member recipientContract - The target contract address
     * @custom:member sourceChain - The chain which this delivery was requested from (in wormhole
     *     ChainID format)
     * @custom:member sequence - The wormhole sequence number of the delivery VAA on the source chain
     *     corresponding to this delivery request
     * @custom:member deliveryVaaHash - The hash of the delivery VAA corresponding to this delivery
     *     request
     * @custom:member gasUsed - The amount of gas that was used to call your target contract
     * @custom:member status:
     *   - RECEIVER_FAILURE, if the target contract reverts
     *   - SUCCESS, if the target contract doesn't revert
     * @custom:member additionalStatusInfo:
     *   - If status is SUCCESS, then this is empty.
     *   - If status is RECEIVER_FAILURE, this is `RETURNDATA_TRUNCATION_THRESHOLD` bytes of the
     *       return data (i.e. potentially truncated revert reason information).
     * @custom:member refundStatus - Result of the refund. REFUND_SUCCESS or REFUND_FAIL are for
     *     refunds where targetChain=refundChain; the others are for targetChain!=refundChain,
     *     where a cross chain refund is necessary
     * @custom:member overridesInfo:
     *   - If not an override: empty bytes array
     *   - Otherwise: An encoded `DeliveryOverride`
     */
    event Delivery(
        address indexed recipientContract,
        uint16 indexed sourceChain,
        uint64 indexed sequence,
        bytes32 deliveryVaaHash,
        DeliveryStatus status,
        uint256 gasUsed,
        RefundStatus refundStatus,
        bytes additionalStatusInfo,
        bytes overridesInfo
    );

    /**
     * @notice The delivery provider calls `deliver` to relay messages as described by one delivery instruction
     *
     * The delivery provider must pass in the specified (by VaaKeys[]) signed wormhole messages (VAAs) from the source chain
     * as well as the signed wormhole message with the delivery instructions (the delivery VAA)
     *
     * The messages will be relayed to the target address (with the specified gas limit and receiver value) iff the following checks are met:
     * - the delivery VAA has a valid signature
     * - the delivery VAA's emitter is one of these WormholeRelayer contracts
     * - the delivery provider passed in at least enough of this chain's currency as msg.value (enough meaning the maximum possible refund)
     * - the instruction's target chain is this chain
     * - the relayed signed VAAs match the descriptions in container.messages (the VAA hashes match, or the emitter address, sequence number pair matches, depending on the description given)
     *
     * @param encodedVMs - An array of signed wormhole messages (all from the same source chain
     *     transaction)
     * @param encodedDeliveryVAA - Signed wormhole message from the source chain's WormholeRelayer
     *     contract with payload being the encoded delivery instruction container
     * @param relayerRefundAddress - The address to which any refunds to the delivery provider
     *     should be sent
     * @param deliveryOverrides - Optional overrides field which must be either an empty bytes array or
     *     an encoded DeliveryOverride struct
     */
    function deliver(
        bytes[] memory encodedVMs,
        bytes memory encodedDeliveryVAA,
        address payable relayerRefundAddress,
        bytes memory deliveryOverrides
    ) external payable;
}

interface IWormholeRelayer is IWormholeRelayerDelivery, IWormholeRelayerSend {}

/*
 *  Errors thrown by IWormholeRelayer contract
 */

// Bound chosen by the following formula: `memoryWord * 4 + selectorSize`.
// This means that an error identifier plus four fixed size arguments should be available to developers.
// In the case of a `require` revert with error message, this should provide 2 memory word's worth of data.
uint256 constant RETURNDATA_TRUNCATION_THRESHOLD = 132;

//When msg.value was not equal to `delivery provider's quoted delivery price` + `paymentForExtraReceiverValue`
error InvalidMsgValue(uint256 msgValue, uint256 totalFee);

error RequestedGasLimitTooLow();

error DeliveryProviderDoesNotSupportTargetChain(address relayer, uint16 chainId);
error DeliveryProviderCannotReceivePayment();
error DeliveryProviderDoesNotSupportMessageKeyType(uint8 keyType);

//When calling `delivery()` a second time even though a delivery is already in progress
error ReentrantDelivery(address msgSender, address lockedBy);

error InvalidPayloadId(uint8 parsed, uint8 expected);
error InvalidPayloadLength(uint256 received, uint256 expected);
error InvalidVaaKeyType(uint8 parsed);
error TooManyMessageKeys(uint256 numMessageKeys);

error InvalidDeliveryVaa(string reason);
//When the delivery VAA (signed wormhole message with delivery instructions) was not emitted by the
//  registered WormholeRelayer contract
error InvalidEmitter(bytes32 emitter, bytes32 registered, uint16 chainId);
error MessageKeysLengthDoesNotMatchMessagesLength(uint256 keys, uint256 vaas);
error VaaKeysDoNotMatchVaas(uint8 index);
//When someone tries to call an external function of the WormholeRelayer that is only intended to be
//  called by the WormholeRelayer itself (to allow retroactive reverts for atomicity)
error RequesterNotWormholeRelayer();

//When trying to relay a `DeliveryInstruction` to any other chain but the one it was specified for
error TargetChainIsNotThisChain(uint16 targetChain);
//When a `DeliveryOverride` contains a gas limit that's less than the original
error InvalidOverrideGasLimit();
//When a `DeliveryOverride` contains a receiver value that's less than the original
error InvalidOverrideReceiverValue();
//When a `DeliveryOverride` contains a 'refund per unit of gas unused' that's less than the original
error InvalidOverrideRefundPerGasUnused();

//When the delivery provider doesn't pass in sufficient funds (i.e. msg.value does not cover the
// maximum possible refund to the user)
error InsufficientRelayerFunds(uint256 msgValue, uint256 minimum);

//When a bytes32 field can't be converted into a 20 byte EVM address, because the 12 padding bytes
//  are non-zero (duplicated from Utils.sol)
error NotAnEvmAddress(bytes32);

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import "./interfaces/IWormholeRelayer.sol";

function toWormholeFormat(address addr) pure returns (bytes32) {
    return bytes32(uint256(uint160(addr)));
}

function fromWormholeFormat(bytes32 whFormatAddress) pure returns (address) {
    if (uint256(whFormatAddress) >> 160 != 0) {
        revert NotAnEvmAddress(whFormatAddress);
    }
    return address(uint160(uint256(whFormatAddress)));
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./interfaces/IWormholeReceiver.sol";
import "./interfaces/IWormholeRelayer.sol";
import "./interfaces/ITokenBridge.sol";

import "./Utils.sol";

abstract contract Base {
    IWormholeRelayer public wormholeRelayer;
    IWormhole public wormhole;

    mapping(bytes32 => bool) public seenDeliveryVaaHashes;

    address registrationOwner;
    mapping(uint16 => bytes32) registeredSenders;

    bool internal _wormholeRelayerInitialized;

    function __Base_init(address _wormholeRelayer, address _wormhole) public {
        require(!_wormholeRelayerInitialized, "WRI");
        _wormholeRelayerInitialized = true;
        wormholeRelayer = IWormholeRelayer(_wormholeRelayer);
        wormhole = IWormhole(_wormhole);
        registrationOwner = msg.sender;
    }

    modifier onlyWormholeRelayer() {
        require(msg.sender == address(wormholeRelayer), "Msg.sender is not Wormhole Relayer");
        _;
    }

    modifier replayProtect(bytes32 deliveryHash) {
        require(!seenDeliveryVaaHashes[deliveryHash], "Message already processed");
        seenDeliveryVaaHashes[deliveryHash] = true;
        _;
    }

    modifier isRegisteredSender(uint16 sourceChain, bytes32 sourceAddress) {
        require(registeredSenders[sourceChain] == sourceAddress, "Not registered sender");
        _;
    }

    /**
     * Sets the registered address for 'sourceChain' to 'sourceAddress'
     * So that for messages from 'sourceChain', only ones from 'sourceAddress' are valid
     *
     * Assumes only one sender per chain is valid
     * Sender is the address that called 'send' on the Wormhole Relayer contract on the source chain)
     */
    function setRegisteredSender(uint16 sourceChain, bytes32 sourceAddress) public {
        require(msg.sender == registrationOwner, "Not allowed to set registered sender");
        registeredSenders[sourceChain] = sourceAddress;
    }
}

abstract contract TokenBase is Base {
    ITokenBridge public tokenBridge;

    function __TokenBase_init(address _wormholeRelayer, address _tokenBridge, address _wormhole) public {
        require(!_wormholeRelayerInitialized, "WRI");
        Base.__Base_init(_wormholeRelayer, _wormhole);
        tokenBridge = ITokenBridge(_tokenBridge);
    }

    function getDecimals(address tokenAddress) internal view returns (uint8 decimals) {
        // query decimals
        (, bytes memory queriedDecimals) = address(tokenAddress).staticcall(abi.encodeWithSignature("decimals()"));
        decimals = abi.decode(queriedDecimals, (uint8));
    }

    function getTokenAddressOnThisChain(uint16 tokenHomeChain, bytes32 tokenHomeAddress)
        internal
        view
        returns (address tokenAddressOnThisChain)
    {
        return tokenHomeChain == wormhole.chainId()
            ? fromWormholeFormat(tokenHomeAddress)
            : tokenBridge.wrappedAsset(tokenHomeChain, tokenHomeAddress);
    }
}

abstract contract TokenSender is TokenBase {
    /**
     * transferTokens wraps common boilerplate for sending tokens to another chain using IWormholeRelayer
     * - approves tokenBridge to spend 'amount' of 'token'
     * - emits token transfer VAA
     * - returns VAA key for inclusion in WormholeRelayer `additionalVaas` argument
     *
     * Note: this function uses transferTokensWithPayload instead of transferTokens since the former requires that only the targetAddress
     *       can redeem transfers. Otherwise it's possible for another address to redeem the transfer before the targetContract is invoked by
     *       the offchain relayer and the target contract would have to be hardened against this.
     *
     */
    function transferTokens(address token, uint256 amount, uint16 targetChain, address targetAddress)
        internal
        returns (VaaKey memory)
    {
        return transferTokens(token, amount, targetChain, targetAddress, bytes(""));
    }

    /**
     * transferTokens wraps common boilerplate for sending tokens to another chain using IWormholeRelayer.
     * A payload can be included in the transfer vaa. By including a payload here instead of the deliveryVaa,
     * fewer trust assumptions are placed on the WormholeRelayer contract.
     *
     * - approves tokenBridge to spend 'amount' of 'token'
     * - emits token transfer VAA
     * - returns VAA key for inclusion in WormholeRelayer `additionalVaas` argument
     *
     * Note: this function uses transferTokensWithPayload instead of transferTokens since the former requires that only the targetAddress
     *       can redeem transfers. Otherwise it's possible for another address to redeem the transfer before the targetContract is invoked by
     *       the offchain relayer and the target contract would have to be hardened against this.
     */
    function transferTokens(
        address token,
        uint256 amount,
        uint16 targetChain,
        address targetAddress,
        bytes memory payload
    ) internal returns (VaaKey memory) {
        SafeERC20.forceApprove(IERC20(token), address(tokenBridge), amount);
        uint64 sequence = tokenBridge.transferTokensWithPayload{value: wormhole.messageFee()}(
            token, amount, targetChain, toWormholeFormat(targetAddress), 0, payload
        );
        return VaaKey({
            emitterAddress: toWormholeFormat(address(tokenBridge)),
            chainId: wormhole.chainId(),
            sequence: sequence
        });
    }

    function sendTokenWithPayloadToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit,
        address token,
        uint256 amount
    ) internal returns (uint64) {
        VaaKey[] memory vaaKeys = new VaaKey[](1);
        vaaKeys[0] = transferTokens(token, amount, targetChain, targetAddress);

        (uint256 cost,) = wormholeRelayer.quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit);
        return wormholeRelayer.sendVaasToEvm{value: cost}(
            targetChain, targetAddress, payload, receiverValue, gasLimit, vaaKeys
        );
    }

    function sendTokenWithPayloadToEvm(
        uint16 targetChain,
        address targetAddress,
        bytes memory payload,
        uint256 receiverValue,
        uint256 gasLimit,
        address token,
        uint256 amount,
        uint16 refundChain,
        address refundAddress
    ) internal returns (uint64) {
        VaaKey[] memory vaaKeys = new VaaKey[](1);
        vaaKeys[0] = transferTokens(token, amount, targetChain, targetAddress);

        (uint256 cost,) = wormholeRelayer.quoteEVMDeliveryPrice(targetChain, receiverValue, gasLimit);
        return wormholeRelayer.sendVaasToEvm{value: cost}(
            targetChain, targetAddress, payload, receiverValue, gasLimit, vaaKeys, refundChain, refundAddress
        );
    }
}

abstract contract TokenReceiver is TokenBase {
    struct TokenReceived {
        bytes32 tokenHomeAddress;
        uint16 tokenHomeChain;
        address tokenAddress; // wrapped address if tokenHomeChain !== this chain, else tokenHomeAddress (in evm address format)
        uint256 amount;
        uint256 amountNormalized; // if decimals > 8, normalized to 8 decimal places
    }

    function receiveWormholeMessages(
        bytes memory payload,
        bytes[] memory additionalVaas,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) external virtual payable {
        _receiveWormholeMessages(payload, additionalVaas, sourceAddress, sourceChain, deliveryHash);
    }

    function _receiveWormholeMessages(
        bytes memory payload,
        bytes[] memory additionalVaas,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) internal {
        TokenReceived[] memory receivedTokens = new TokenReceived[](additionalVaas.length);

        for (uint256 i = 0; i < additionalVaas.length; ++i) {
            IWormhole.VM memory parsed = wormhole.parseVM(additionalVaas[i]);
            require(
                parsed.emitterAddress == tokenBridge.bridgeContracts(parsed.emitterChainId), "Not a Token Bridge VAA"
            );
            ITokenBridge.TransferWithPayload memory transfer = tokenBridge.parseTransferWithPayload(parsed.payload);
            require(
                transfer.to == toWormholeFormat(address(this)) && transfer.toChain == wormhole.chainId(),
                "Token was not sent to this address"
            );

            tokenBridge.completeTransferWithPayload(additionalVaas[i]);

            address thisChainTokenAddress = getTokenAddressOnThisChain(transfer.tokenChain, transfer.tokenAddress);
            uint8 decimals = getDecimals(thisChainTokenAddress);
            uint256 denormalizedAmount = transfer.amount;
            if (decimals > 8) denormalizedAmount *= uint256(10) ** (decimals - 8);

            receivedTokens[i] = TokenReceived({
                tokenHomeAddress: transfer.tokenAddress,
                tokenHomeChain: transfer.tokenChain,
                tokenAddress: thisChainTokenAddress,
                amount: denormalizedAmount,
                amountNormalized: transfer.amount
            });
        }

        // call into overriden method
        receivePayloadAndTokens(payload, receivedTokens, sourceAddress, sourceChain, deliveryHash);
    }

    function receivePayloadAndTokens(
        bytes memory payload,
        TokenReceived[] memory receivedTokens,
        bytes32 sourceAddress,
        uint16 sourceChain,
        bytes32 deliveryHash
    ) internal virtual {}
}

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

/**
 * @title HubSpokeStructs
 * @notice A set of structs and enums used in the Hub and Spoke contracts
 */
contract HubSpokeStructs {
    /**
     * @param wormhole: Address of the Wormhole contract
     * @param tokenBridge: Address of the TokenBridge contract
     * @param wormholeRelayer: Address of the WormholeRelayer contract
     * @param consistencyLevel: Desired level of finality the Wormhole guardians will reach before signing the messages
     * NOTE: consistencyLevel = 200 will result in an instant message, while all other values will wait for finality
     * Recommended finality levels can be found here: https://book.wormhole.com/reference/contracts.html
     * @param pythAddress: Address of the Pyth oracle on the Hub chain
     * @param priceStandardDeviations: priceStandardDeviations = (psd * priceStandardDeviationsPrecision), where psd is
     * the number of standard deviations that we use for our price intervals in calculations relating to allowing
     * withdraws, borrows, or liquidations
     * @param priceStandardDeviationsPrecision: A precision number that allows us to represent our desired noninteger
     * price standard deviation as an integer (psd = priceStandardDeviations/priceStandardDeviationsPrecision)
     * @param maxLiquidationPortionPrecision: A precision number that allows us to represent our desired noninteger
     * max liquidation portion mlp as an integer (mlp = maxLiquidationPortion/maxLiquidationPortionPrecision)
     * @param interestAccrualIndexPrecision: A precision number that allows us to represent our noninteger interest
     * accrual indices as integers; we store each index as its true value multiplied by interestAccrualIndexPrecision
     * @param collateralizationRatioPrecision: A precision number that allows us to represent our noninteger
     * collateralization ratios as integers; we store each ratio as its true value multiplied by
     * collateralizationRatioPrecision
     * @param liquidationFee: The fee taken by the protocol on liquidation
     * @param _circleMessageTransmitter: Cicle Message Transmitter contract (cctp)
     * @param _circleTokenMessenger: Cicle Token Messenger contract (cctp)
     * @param _USDC: USDC token contract (cctp)
     */
    struct ConstructorArgs {
        /* Wormhole Information */
        address wormhole;
        address tokenBridge;
        address wormholeRelayer;
        uint8 consistencyLevel;
        /* Liquidation Information */
        uint256 interestAccrualIndexPrecision;
        uint256 liquidationFee;
        uint256 liquidationFeePrecision;
        /* CCTP Information */
        address circleMessageTransmitter;
        address circleTokenMessenger;
        address USDC;
    }

    struct StoredVaultAmount {
        DenormalizedVaultAmount amounts;
        AccrualIndices accrualIndices;
    }

    struct DenormalizedVaultAmount {
        uint256 deposited;
        uint256 borrowed;
    }

    struct NotionalVaultAmount {
        uint256 deposited;
        uint256 borrowed;
    }

    struct AccrualIndices {
        uint256 deposited;
        uint256 borrowed;
    }

    struct AssetInfo {
        uint256 collateralizationRatioDeposit;
        uint256 collateralizationRatioBorrow;
        uint8 decimals;
        address interestRateCalculator;
        bool exists;
        uint256 borrowLimit;
        uint256 supplyLimit;
        uint256 maxLiquidationPortion;
        uint256 maxLiquidationBonus; // 1e6 precision; 130e4 = 130% = 1.3; the liquidator gets 30% over what he repays
    }

    /**
     * @dev Struct to hold the decoded data from a Wormhole payload
     * @param action The action to be performed (e.g., Deposit, Borrow, Withdraw, Repay)
     * @param sender The address of the sender initiating the action
     * @param wrappedAsset The address of the wrapped asset involved in the action
     * @param amount The amount of the wrapped asset involved in the action
     * @param unwrap A boolean indicating whether to unwrap the asset or not for native withdraws and borrows
     */
    struct PayloadData {
        Action action;
        address sender;
        address wrappedAsset;
        uint256 amount;
        bool unwrap;
    }

    enum Action {
        Deposit,
        Borrow,
        Withdraw,
        Repay,
        DepositNative,
        RepayNative
    }

    enum Round {
        UP,
        DOWN
    }
}

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

import "./SpokeState.sol";

/**
 * @title SpokeGetters
 * @notice A set of public getter functions
 */
contract SpokeGetters is SpokeState {
    function chainId() public view returns (uint16) {
        return _state.chainId;
    }

    function consistencyLevel() public view returns (uint8) {
        return _state.consistencyLevel;
    }

    function hubChainId() public view returns (uint16) {
        return _state.hubChainId;
    }

    function hubContractAddress() public view returns (address) {
        return _state.hubContractAddress;
    }

    function defaultGasLimitRoundtrip() public view returns (uint256) {
        return _state.defaultGasLimitRoundtrip;
    }
}

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

import "../HubSpokeStructs.sol";

/**
 * @title SpokeStorage
 * @notice Contract defining state variables for the Spoke contract
 */
contract SpokeStorage is HubSpokeStructs {
    struct State {
        uint16 chainId;
        // number of confirmations for wormhole messages
        uint8 consistencyLevel;
        uint16 hubChainId;
        address hubContractAddress;
        uint256 defaultGasLimitRoundtrip;
        bool isUsingCCTP;
        // @dev storage gap
        uint256[50] ______gap;
    }
}

/**
 * @title SpokeState
 * @notice Contract holding state variable for the Spoke contract
 */
contract SpokeState {
    SpokeStorage.State _state;
}

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

import "../../interfaces/IERC20decimals.sol";

/**
 * @title SpokeUtilities
 * @notice A set of internal utility functions
 */
contract SpokeUtilities {
    /**
     * @dev This function checks if the asset amount is valid for the token bridge
     * @param assetAddress The address of the asset
     * @param assetAmount The amount of the asset
     */
    function requireAssetAmountValidForTokenBridge(address assetAddress, uint256 assetAmount) internal view {
        uint8 decimals = IERC20decimals(assetAddress).decimals();
        require(
            deNormalizeAmount(normalizeAmount(assetAmount, decimals), decimals) == assetAmount,
            "Too many decimal places"
        );
    }

    /**
     * @dev This function normalizes the amount based on the decimals
     * @param amount The amount to be normalized
     * @param decimals The number of decimals
     * @return The normalized amount
     */
    function normalizeAmount(uint256 amount, uint8 decimals) internal pure returns (uint256) {
        if (decimals > 8) {
            amount /= 10 ** (decimals - 8);
        } else if (decimals < 8){
            amount *= 10 ** (8 - decimals);
        }

        return amount;
    }

    /**
     * @dev This function denormalizes the amount based on the decimals
     * @param amount The amount to be denormalized
     * @param decimals The number of decimals
     * @return The denormalized amount
     */
    function deNormalizeAmount(uint256 amount, uint8 decimals) internal pure returns (uint256) {
        if (decimals > 8) {
            amount *= 10 ** (decimals - 8);
        } else if (decimals < 8) {
            amount /= 10 ** (8 - decimals);
        }

        return amount;
    }
}

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

import {TokenReceiver} from "@wormhole-upgradeable/WormholeRelayerSDK.sol";
import {CCTPReceiver} from "@wormhole-upgradeable/CCTPBase.sol";

abstract contract TokenReceiverWithCCTP is CCTPReceiver, TokenReceiver {
    /**
     * @dev Overriding the superclasses' function to choose whether to use CCTP or not, based on the implemented
     * `isUsingCCTP` function
     * @param payload - the payload received
     * @param additionalVaas - any wormhole VAAs received
     * @param sourceAddress - the source address of the tokens
     * @param sourceChain - the source chain of the tokens
     * @param deliveryHash - the delivery hash of the tokens
     */
    function receiveWormholeMessages(
          bytes memory payload,
          bytes[] memory additionalVaas,
          bytes32 sourceAddress,
          uint16 sourceChain,
          bytes32 deliveryHash
    ) public virtual override(TokenReceiver, CCTPReceiver) payable {
        if (messageWithCCTP(payload)) {
            _receiveWormholeMessagesWithCCTP(payload, additionalVaas, sourceAddress, sourceChain, deliveryHash);
        } else {
            _receiveWormholeMessages(payload, additionalVaas, sourceAddress, sourceChain, deliveryHash);
        }
    }

    /**
     * @dev Virtual function to decode `payload` and determine if using CCTP or not
     * @param payload - the payload received
     */
    function messageWithCCTP(bytes memory payload) internal view virtual returns (bool);
}

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

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IERC20decimals is IERC20 {
    function decimals() external view returns (uint8);
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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IMessageTransmitter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"circleTokenMessenger","outputs":[{"internalType":"contract ITokenMessenger","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"consistencyLevel","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"defaultGasLimitRoundtrip","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"assetAmount","type":"uint256"},{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"}],"name":"depositCollateral","outputs":[{"internalType":"uint64","name":"sequence","type":"uint64"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"}],"name":"depositCollateralNative","outputs":[{"internalType":"uint64","name":"sequence","type":"uint64"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"},{"internalType":"bool","name":"withTokenTransfer","type":"bool"}],"name":"getDeliveryCostRoundtrip","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hubChainId","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hubContractAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"bytes[]","name":"additionalVaas","type":"bytes[]"},{"internalType":"bytes32","name":"sourceAddress","type":"bytes32"},{"internalType":"uint16","name":"sourceChain","type":"uint16"},{"internalType":"bytes32","name":"deliveryHash","type":"bytes32"}],"name":"receiveWormholeMessages","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"assetAmount","type":"uint256"},{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"}],"name":"repay","outputs":[{"internalType":"uint64","name":"sequence","type":"uint64"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"}],"name":"repayNative","outputs":[{"internalType":"uint64","name":"sequence","type":"uint64"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"seenDeliveryVaaHashes","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"setDefaultGasLimitRoundtrip","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"value","type":"bool"}],"name":"setIsUsingCCTP","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"sourceChain","type":"uint16"},{"internalType":"bytes32","name":"sourceAddress","type":"bytes32"}],"name":"setRegisteredSender","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tokenBridge","outputs":[{"internalType":"contract ITokenBridge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"asset","type":"address"},{"internalType":"uint256","name":"assetAmount","type":"uint256"},{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"}],"name":"withdrawCollateral","outputs":[{"internalType":"uint64","name":"sequence","type":"uint64"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"assetAmount","type":"uint256"},{"internalType":"uint256","name":"costForReturnDelivery","type":"uint256"},{"internalType":"bool","name":"unwrap","type":"bool"}],"name":"withdrawCollateralNative","outputs":[{"internalType":"uint64","name":"sequence","type":"uint64"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"wormhole","outputs":[{"internalType":"contract IWormhole","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"wormholeRelayer","outputs":[{"internalType":"contract IWormholeRelayer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

-----Decoded View---------------
Arg [0] : chainId (uint16): 2
Arg [1] : wormhole (address): 0x98f3c9e6E3fAce36bAAd05FE09d375Ef1464288B
Arg [2] : tokenBridge (address): 0x3ee18B2214AFF97000D974cf647E7C347E8fa585
Arg [3] : relayer (address): 0x27428DD2d3DD32A4D7f7C497eAaa23130d894911
Arg [4] : hubChainId (uint16): 23
Arg [5] : hubContractAddress (address): 0x1e3f1f1cA8C62aABCB3B78D87223E988Dfa3780E
Arg [6] : _circleMessageTransmitter (address): 0x0a992d191DEeC32aFe36203Ad87D7d289a738F81
Arg [7] : _circleTokenMessenger (address): 0xBd3fa81B58Ba92a82136038B25aDec7066af3155
Arg [8] : _USDC (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [1] : 00000000000000000000000098f3c9e6e3face36baad05fe09d375ef1464288b
Arg [2] : 0000000000000000000000003ee18b2214aff97000d974cf647e7c347e8fa585
Arg [3] : 00000000000000000000000027428dd2d3dd32a4d7f7c497eaaa23130d894911
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000017
Arg [5] : 0000000000000000000000001e3f1f1ca8c62aabcb3b78d87223e988dfa3780e
Arg [6] : 0000000000000000000000000a992d191deec32afe36203ad87d7d289a738f81
Arg [7] : 000000000000000000000000bd3fa81b58ba92a82136038b25adec7066af3155
Arg [8] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48