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Contract Source Code Verified (Exact Match)

Contract Name:
LandSaleETH

Compiler Version
v0.8.22+commit.4fc1097e

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
File 1 of 26 : LandSaleETH.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.22;

import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/ReentrancyGuardUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IRouterClient} from "@chainlink/contracts-ccip/src/v0.8/ccip/interfaces/IRouterClient.sol";
import {Client} from "@chainlink/contracts-ccip/src/v0.8/ccip/libraries/Client.sol";
import {CCIPReceiver} from "@chainlink/contracts-ccip/src/v0.8/ccip/applications/CCIPReceiver.sol";
import "@unification-com/xfund-router/contracts/lib/ConsumerBase.sol";
import "./interfaces/ILandRegistry.sol";
import "./interfaces/ILandAuction.sol";

/**
 * @title LandSaleETH
 * @dev Implementation of land sale system on Ethereum with CCIP integration.
 * Supports both ETH and SHIB payments with oracle-based price conversion.
 */
contract LandSaleETH is
    Initializable,
    OwnableUpgradeable,
    ReentrancyGuardUpgradeable,
    UUPSUpgradeable,
    ConsumerBase,
    CCIPReceiver
{
    // Constants
    uint32 constant clearLow = 0xffff0000;
    uint32 constant clearHigh = 0x0000ffff;
    uint32 constant factor = 0x10000;

    int16 public constant xLow = -96;
    int16 public constant yLow = -99;
    int16 public constant xHigh = 96;
    int16 public constant yHigh = 99;

    // Custom errors
    error NotEnoughBalance(uint256 currentBalance, uint256 calculatedFees);
    error InvalidAddress();
    error NoMessageToSend();
    error MessageSendFailed();

    // Structs
    enum Stage {
        Default,
        PublicSale
    }

    struct Purchase {
        uint256 amount;
        address buyer;
        bool isShib;
    }

    struct MintStatusUpdate {
        uint256 id;
        bool status;
    }

    // State variables
    ILandRegistry public landRegistry;
    ILandAuction public auctionV1;
    Stage public currentStage;
    bool public multiMintEnabled;
    IERC20 public SHIB;
    uint256 public ethToShib;
    address public moderator;

    // CCIP configuration
    uint64 public shibariumChainSelector;
    address public shibariumSaleContract;

    // Storage
    mapping(uint256 => bool) public mintedOnShibarium;
    mapping(int16 => mapping(int16 => Purchase)) public purchases;
    mapping(address => uint32[]) private _allPurchasesOf;

    // Events
    event StageSet(Stage stage);
    event MultiMintToggled(bool newValue);
    event LandBought(
        address indexed user,
        uint32 indexed encXY,
        int16 x,
        int16 y,
        uint256 price,
        bool isShib,
        uint256 time
    );
    event MintStatusUpdated(uint256 indexed id, bool isMinted);

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function initialize(
        ILandRegistry _landRegistry,
        ILandAuction _auctionV1,
        IERC20 _shib,
        uint64 _shibariumChainSelector,
        IERC20_Ex _xfund,
        IRouter _router,
        address _ccipRouter
    ) public initializer {
        __Ownable_init(msg.sender);
        __ReentrancyGuard_init();
        __UUPSUpgradeable_init();

        moderator = msg.sender;

        i_ccipRouter = _ccipRouter;
        landRegistry = _landRegistry;
        auctionV1 = _auctionV1;
        SHIB = _shib;
        shibariumChainSelector = _shibariumChainSelector;
        xFUND = _xfund;
        router = _router;
    }

    // Modifiers
    modifier onlyValid(int16 x, int16 y) {
        require(xLow <= x && x <= xHigh, "ERR_X_OUT_OF_RANGE");
        require(yLow <= y && y <= yHigh, "ERR_Y_OUT_OF_RANGE");
        _;
    }

    modifier onlyStage(Stage s) {
        require(currentStage == s, "ERR_SALE_NOT_ACTIVE");
        _;
    }

    modifier onlyModerator() {
        require(msg.sender == moderator, "ERR_ONLY_MODERATOR");
        _;
    }

    // Public view functions
    function getCategory(int16 x, int16 y) public view returns (int8) {
        return auctionV1.getCategory(x, y);
    }

    function getPriceInEth(int16 x, int16 y) public view returns (uint256) {
        return auctionV1.getReservePrice(x, y);
    }

    function getPriceInShib(int16 x, int16 y) public view returns (uint256) {
        uint256 ethPrice = getPriceInEth(x, y);
        uint256 shibPrice = (ethToShib * ethPrice) / 1 ether;
        require(shibPrice > 0, "ERR_INVALID_PRICE_CONVERSION");
        return shibPrice;
    }

    function getMessageFee(
        MintStatusUpdate[] memory updates
    ) public view returns (uint256) {
        bytes memory message = abi.encode(updates);
        Client.EVM2AnyMessage memory evm2AnyMessage = _buildCCIPMessage(
            message,
            address(0)
        );

        IRouterClient router = IRouterClient(this.getRouter());
        return router.getFee(shibariumChainSelector, evm2AnyMessage);
    }

    // Mint functions
    function mintPublic(
        int16 x,
        int16 y
    ) external payable onlyStage(Stage.PublicSale) nonReentrant {
        uint32 encXY = _encodeXY(x, y);
        require(!landRegistry.exists(uint256(encXY)), "ERR_ALREADY_MINTED");
        require(!mintedOnShibarium[encXY], "ERR_MINTED_ON_SHIBARIUM");

        (uint256 amount, address bidder) = auctionV1.getCurrentBid(x, y);
        require(bidder == address(0), "ERR_HAS_WINNING_BIDDER");

        uint256 price = getPriceInEth(x, y);
        Purchase storage purchase = purchases[x][y];
        require(purchase.amount == 0, "ERR_ALREADY_PURCHASED");

        // Prepare single update
        MintStatusUpdate[] memory updates = new MintStatusUpdate[](1);
        updates[0] = MintStatusUpdate({id: encXY, status: true});

        uint256 messageFee = getMessageFee(updates);
        require(msg.value >= price + messageFee, "ERR_INSUFFICIENT_PAYMENT");

        _processPurchase(x, y, price, false);
        _sendMintStatus(updates);

        uint256 excess = msg.value - (price + messageFee);
        if (excess > 0) {
            payable(msg.sender).transfer(excess);
        }
    }

    function mintPublicMulti(
        int16[] calldata xs,
        int16[] calldata ys
    ) external payable onlyStage(Stage.PublicSale) nonReentrant {
        require(multiMintEnabled, "ERR_MULTI_MINT_DISABLED");
        uint256 length = xs.length;
        require(length == ys.length, "ERR_LENGTH_MISMATCH");

        uint256 totalPrice = 0;
        MintStatusUpdate[] memory updates = new MintStatusUpdate[](length);

        // Validate and calculate total price
        for (uint256 i = 0; i < length; i++) {
            uint32 encXY = _encodeXY(xs[i], ys[i]);
            require(!landRegistry.exists(uint256(encXY)), "ERR_ALREADY_MINTED");
            require(!mintedOnShibarium[encXY], "ERR_MINTED_ON_SHIBARIUM");

            (uint256 amount, address bidder) = auctionV1.getCurrentBid(
                xs[i],
                ys[i]
            );
            require(bidder == address(0), "ERR_HAS_WINNING_BIDDER");

            Purchase storage purchase = purchases[xs[i]][ys[i]];
            require(purchase.amount == 0, "ERR_ALREADY_PURCHASED");

            updates[i] = MintStatusUpdate({id: encXY, status: true});

            totalPrice += getPriceInEth(xs[i], ys[i]);
        }

        uint256 messageFee = getMessageFee(updates);
        require(
            msg.value >= totalPrice + messageFee,
            "ERR_INSUFFICIENT_PAYMENT"
        );

        // Process purchases
        for (uint256 i = 0; i < length; i++) {
            uint256 price = getPriceInEth(xs[i], ys[i]);
            _processPurchase(xs[i], ys[i], price, false);
        }

        _sendMintStatus(updates);

        uint256 excess = msg.value - (totalPrice + messageFee);
        if (excess > 0) {
            payable(msg.sender).transfer(excess);
        }
    }

    function mintPublicWithShib(
        int16 x,
        int16 y
    ) external payable onlyStage(Stage.PublicSale) nonReentrant {
        uint32 encXY = _encodeXY(x, y);
        require(!landRegistry.exists(uint256(encXY)), "ERR_ALREADY_MINTED");
        require(!mintedOnShibarium[encXY], "ERR_MINTED_ON_SHIBARIUM");

        (uint256 amount, address bidder) = auctionV1.getCurrentBid(x, y);
        require(bidder == address(0), "ERR_HAS_WINNING_BIDDER");

        uint256 price = getPriceInShib(x, y);
        Purchase storage purchase = purchases[x][y];
        require(purchase.amount == 0, "ERR_ALREADY_PURCHASED");

        // Prepare single update
        MintStatusUpdate[] memory updates = new MintStatusUpdate[](1);
        updates[0] = MintStatusUpdate({id: encXY, status: true});

        uint256 messageFee = getMessageFee(updates);
        require(msg.value >= messageFee, "ERR_INSUFFICIENT_PAYMENT");

        SHIB.transferFrom(msg.sender, address(this), price);
        _processPurchase(x, y, price, true);
        _sendMintStatus(updates);

        uint256 excess = msg.value - messageFee;
        if (excess > 0) {
            payable(msg.sender).transfer(excess);
        }
    }

    function mintPublicWithShibMulti(
        int16[] calldata xs,
        int16[] calldata ys
    ) external payable onlyStage(Stage.PublicSale) nonReentrant {
        require(multiMintEnabled, "ERR_MULTI_MINT_DISABLED");
        uint256 length = xs.length;
        require(length == ys.length, "ERR_LENGTH_MISMATCH");

        uint256 totalShibPrice = 0;
        MintStatusUpdate[] memory updates = new MintStatusUpdate[](length);

        // Calculate total price and validate
        for (uint256 i = 0; i < length; i++) {
            uint32 encXY = _encodeXY(xs[i], ys[i]);
            require(!landRegistry.exists(uint256(encXY)), "ERR_ALREADY_MINTED");
            require(!mintedOnShibarium[encXY], "ERR_MINTED_ON_SHIBARIUM");

            (uint256 amount, address bidder) = auctionV1.getCurrentBid(
                xs[i],
                ys[i]
            );
            require(bidder == address(0), "ERR_HAS_WINNING_BIDDER");

            Purchase storage purchase = purchases[xs[i]][ys[i]];
            require(purchase.amount == 0, "ERR_ALREADY_PURCHASED");

            updates[i] = MintStatusUpdate({id: encXY, status: true});

            totalShibPrice += getPriceInShib(xs[i], ys[i]);
        }

        uint256 messageFee = getMessageFee(updates);
        require(msg.value >= messageFee, "ERR_INSUFFICIENT_PAYMENT");

        SHIB.transferFrom(msg.sender, address(this), totalShibPrice);

        // Process purchases
        for (uint256 i = 0; i < length; i++) {
            uint256 price = getPriceInShib(xs[i], ys[i]);
            _processPurchase(xs[i], ys[i], price, true);
        }

        _sendMintStatus(updates);

        uint256 excess = msg.value - messageFee;
        if (excess > 0) {
            payable(msg.sender).transfer(excess);
        }
    }

    function mintWinningBid(
        int16[] calldata xs,
        int16[] calldata ys
    ) external payable nonReentrant {
        uint256 length = xs.length;
        require(length == ys.length, "ERR_LENGTH_MISMATCH");

        MintStatusUpdate[] memory updates = new MintStatusUpdate[](length);

        for (uint256 i = 0; i < length; i++) {
            uint32 encXY = _encodeXY(xs[i], ys[i]);
            require(!landRegistry.exists(uint256(encXY)), "ERR_ALREADY_MINTED");
            require(!mintedOnShibarium[encXY], "ERR_MINTED_ON_SHIBARIUM");

            (uint256 amount, address bidder) = auctionV1.getCurrentBid(
                xs[i],
                ys[i]
            );
            require(bidder == msg.sender, "ERR_NOT_WINNING_BIDDER");

            updates[i] = MintStatusUpdate({id: encXY, status: true});
        }

        uint256 messageFee = getMessageFee(updates);
        require(msg.value >= messageFee, "ERR_INSUFFICIENT_MESSAGE_FEE");

        // Process all mints
        for (uint256 i = 0; i < length; i++) {
            uint32 encXY = _encodeXY(xs[i], ys[i]);

            // Record purchase with 0 amount since payment was made during bidding
            Purchase storage purchase = purchases[xs[i]][ys[i]];
            purchase.amount = 0;
            purchase.buyer = msg.sender;
            purchase.isShib = false;

            _allPurchasesOf[msg.sender].push(encXY);

            // Mint the NFT
            landRegistry.mint(msg.sender, xs[i], ys[i]);

            emit LandBought(
                msg.sender,
                encXY,
                xs[i],
                ys[i],
                0, // Amount is 0 as payment was made during bidding
                false,
                block.timestamp
            );
        }

        _sendMintStatus(updates);

        uint256 excess = msg.value - messageFee;
        if (excess > 0) {
            payable(msg.sender).transfer(excess);
        }
    }

    // Admin functions
    function setShibariumSaleContract(
        address _saleContract
    ) external onlyOwner {
        if (_saleContract == address(0)) revert InvalidAddress();
        shibariumSaleContract = _saleContract;
    }

    function setStage(Stage stage) external onlyOwner {
        currentStage = stage;
        emit StageSet(stage);
    }

    function setLandRegistry(ILandRegistry _landRegistry) external onlyOwner {
        if (address(_landRegistry) == address(0)) revert InvalidAddress();
        landRegistry = _landRegistry;
    }

    function setAuctionV1(ILandAuction _auctionV1) external onlyOwner {
        if (address(_auctionV1) == address(0)) revert InvalidAddress();
        auctionV1 = _auctionV1;
    }

    function setMultiMint(bool enabled) external onlyOwner {
        require(multiMintEnabled != enabled, "ERR_NO_CHANGE");
        multiMintEnabled = enabled;
        emit MultiMintToggled(enabled);
    }

    function setModerator(address _moderator) external onlyOwner {
        require(_moderator != address(0), "ERR_ZERO_ADDRESS");
        moderator = _moderator;
    }

    // Withdrawal functions
    function withdraw() external onlyOwner {
        uint256 balance = address(this).balance;
        require(balance > 0, "ERR_NO_BALANCE");
        payable(owner()).transfer(balance);
    }

    function withdrawXFund() external onlyOwner {
        uint256 balance = xFUND.balanceOf(address(this));
        require(balance > 0, "ERR_NO_BALANCE");
        xFUND.transfer(owner(), balance);
    }

    function withdrawShib() external onlyOwner {
        SHIB.transfer(owner(), SHIB.balanceOf(address(this)));
    }

    // Internal functions
    function _processPurchase(
        int16 x,
        int16 y,
        uint256 amount,
        bool isShib
    ) internal {
        Purchase storage purchase = purchases[x][y];
        purchase.amount = amount;
        purchase.buyer = msg.sender;
        purchase.isShib = isShib;

        uint32 encXY = _encodeXY(x, y);
        _allPurchasesOf[msg.sender].push(encXY);

        landRegistry.mint(msg.sender, x, y);

        emit LandBought(
            msg.sender,
            encXY,
            x,
            y,
            amount,
            isShib,
            block.timestamp
        );
    }

    function _sendMintStatus(MintStatusUpdate[] memory updates) internal {
        uint256 fees = getMessageFee(updates);
        if (fees > msg.value) revert NotEnoughBalance(msg.value, fees);

        bytes memory message = abi.encode(updates);
        Client.EVM2AnyMessage memory evm2AnyMessage = _buildCCIPMessage(
            message,
            address(0)
        );

        IRouterClient router = IRouterClient(this.getRouter());
        router.ccipSend{value: fees}(shibariumChainSelector, evm2AnyMessage);
    }

    function _buildCCIPMessage(
        bytes memory _message,
        address _feeTokenAddress
    ) internal view returns (Client.EVM2AnyMessage memory) {
        return
            Client.EVM2AnyMessage({
                receiver: abi.encode(shibariumSaleContract),
                data: _message,
                tokenAmounts: new Client.EVMTokenAmount[](0),
                extraArgs: Client._argsToBytes(
                    Client.EVMExtraArgsV2({
                        gasLimit: 500_000,
                        allowOutOfOrderExecution: true
                    })
                ),
                feeToken: _feeTokenAddress
            });
    }

    function _ccipReceive(
        Client.Any2EVMMessage memory message
    ) internal override {
        require(
            message.sourceChainSelector == shibariumChainSelector,
            "Wrong chain selector"
        );
        require(
            abi.decode(message.sender, (address)) == shibariumSaleContract,
            "Invalid sender"
        );

        MintStatusUpdate[] memory updates = abi.decode(
            message.data,
            (MintStatusUpdate[])
        );
        for (uint256 i = 0; i < updates.length; i++) {
            mintedOnShibarium[updates[i].id] = updates[i].status;
            emit MintStatusUpdated(updates[i].id, updates[i].status);
        }
    }

    function _transformXY(
        int16 x,
        int16 y
    ) internal pure onlyValid(x, y) returns (uint16, uint16) {
        return (uint16(x + 97), uint16(100 - y));
    }

    function _encodeXY(int16 x, int16 y) internal pure returns (uint32) {
        return
            ((uint32(uint16(x)) * factor) & clearLow) |
            (uint32(uint16(y)) & clearHigh);
    }

    function _authorizeUpgrade(
        address newImplementation
    ) internal override onlyOwner {}

    // Oracle functions
    function receiveData(uint256 _price, bytes32) internal override {
        ethToShib = _price;
    }

    function getData(
        address _provider,
        uint256 _fee
    ) external onlyModerator returns (bytes32) {
        bytes32 data = 0x574554482e534849422e41440000000000000000000000000000000000000000; // WETH.SHIB.AD
        return _requestData(_provider, _fee, data);
    }

    function increaseRouterAllowance(uint256 _amount) external onlyModerator {
        require(_increaseRouterAllowance(_amount), "ERR_FAILED_TO_INCREASE");
    }

    receive() external payable {}
}

File 2 of 26 : CCIPReceiver.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import {IAny2EVMMessageReceiver} from "../interfaces/IAny2EVMMessageReceiver.sol";

import {Client} from "../libraries/Client.sol";

import {IERC165} from "../../vendor/openzeppelin-solidity/v5.0.2/contracts/utils/introspection/IERC165.sol";

/// @title CCIPReceiver - Base contract for CCIP applications that can receive messages.
abstract contract CCIPReceiver is IAny2EVMMessageReceiver, IERC165 {
  address internal i_ccipRouter;

  constructor() {

  }

  /// @notice IERC165 supports an interfaceId
  /// @param interfaceId The interfaceId to check
  /// @return true if the interfaceId is supported
  /// @dev Should indicate whether the contract implements IAny2EVMMessageReceiver
  /// e.g. return interfaceId == type(IAny2EVMMessageReceiver).interfaceId || interfaceId == type(IERC165).interfaceId
  /// This allows CCIP to check if ccipReceive is available before calling it.
  /// If this returns false or reverts, only tokens are transferred to the receiver.
  /// If this returns true, tokens are transferred and ccipReceive is called atomically.
  /// Additionally, if the receiver address does not have code associated with
  /// it at the time of execution (EXTCODESIZE returns 0), only tokens will be transferred.
  function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    return interfaceId == type(IAny2EVMMessageReceiver).interfaceId || interfaceId == type(IERC165).interfaceId;
  }

  /// @inheritdoc IAny2EVMMessageReceiver
  function ccipReceive(Client.Any2EVMMessage calldata message) external virtual override onlyRouter {
    _ccipReceive(message);
  }

  /// @notice Override this function in your implementation.
  /// @param message Any2EVMMessage
  function _ccipReceive(Client.Any2EVMMessage memory message) internal virtual;

  /////////////////////////////////////////////////////////////////////
  // Plumbing
  /////////////////////////////////////////////////////////////////////

  /// @notice Return the current router
  /// @return CCIP router address
  function getRouter() public view virtual returns (address) {
    return address(i_ccipRouter);
  }

  error InvalidRouter(address router);

  /// @dev only calls from the set router are accepted.
  modifier onlyRouter() {
    if (msg.sender != getRouter()) revert InvalidRouter(msg.sender);
    _;
  }
}

File 3 of 26 : IAny2EVMMessageReceiver.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {Client} from "../libraries/Client.sol";

/// @notice Application contracts that intend to receive messages from
/// the router should implement this interface.
interface IAny2EVMMessageReceiver {
  /// @notice Called by the Router to deliver a message.
  /// If this reverts, any token transfers also revert. The message
  /// will move to a FAILED state and become available for manual execution.
  /// @param message CCIP Message
  /// @dev Note ensure you check the msg.sender is the OffRampRouter
  function ccipReceive(Client.Any2EVMMessage calldata message) external;
}

File 4 of 26 : IRouterClient.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import {Client} from "../libraries/Client.sol";

interface IRouterClient {
  error UnsupportedDestinationChain(uint64 destChainSelector);
  error InsufficientFeeTokenAmount();
  error InvalidMsgValue();

  /// @notice Checks if the given chain ID is supported for sending/receiving.
  /// @param destChainSelector The chain to check.
  /// @return supported is true if it is supported, false if not.
  function isChainSupported(uint64 destChainSelector) external view returns (bool supported);

  /// @param destinationChainSelector The destination chainSelector
  /// @param message The cross-chain CCIP message including data and/or tokens
  /// @return fee returns execution fee for the message
  /// delivery to destination chain, denominated in the feeToken specified in the message.
  /// @dev Reverts with appropriate reason upon invalid message.
  function getFee(
    uint64 destinationChainSelector,
    Client.EVM2AnyMessage memory message
  ) external view returns (uint256 fee);

  /// @notice Request a message to be sent to the destination chain
  /// @param destinationChainSelector The destination chain ID
  /// @param message The cross-chain CCIP message including data and/or tokens
  /// @return messageId The message ID
  /// @dev Note if msg.value is larger than the required fee (from getFee) we accept
  /// the overpayment with no refund.
  /// @dev Reverts with appropriate reason upon invalid message.
  function ccipSend(
    uint64 destinationChainSelector,
    Client.EVM2AnyMessage calldata message
  ) external payable returns (bytes32);
}

File 5 of 26 : Client.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// End consumer library.
library Client {
  /// @dev RMN depends on this struct, if changing, please notify the RMN maintainers.
  struct EVMTokenAmount {
    address token; // token address on the local chain.
    uint256 amount; // Amount of tokens.
  }

  struct Any2EVMMessage {
    bytes32 messageId; // MessageId corresponding to ccipSend on source.
    uint64 sourceChainSelector; // Source chain selector.
    bytes sender; // abi.decode(sender) if coming from an EVM chain.
    bytes data; // payload sent in original message.
    EVMTokenAmount[] destTokenAmounts; // Tokens and their amounts in their destination chain representation.
  }

  // If extraArgs is empty bytes, the default is 200k gas limit.
  struct EVM2AnyMessage {
    bytes receiver; // abi.encode(receiver address) for dest EVM chains
    bytes data; // Data payload
    EVMTokenAmount[] tokenAmounts; // Token transfers
    address feeToken; // Address of feeToken. address(0) means you will send msg.value.
    bytes extraArgs; // Populate this with _argsToBytes(EVMExtraArgsV2)
  }

  // bytes4(keccak256("CCIP EVMExtraArgsV1"));
  bytes4 public constant EVM_EXTRA_ARGS_V1_TAG = 0x97a657c9;

  struct EVMExtraArgsV1 {
    uint256 gasLimit;
  }

  function _argsToBytes(EVMExtraArgsV1 memory extraArgs) internal pure returns (bytes memory bts) {
    return abi.encodeWithSelector(EVM_EXTRA_ARGS_V1_TAG, extraArgs);
  }

  // bytes4(keccak256("CCIP EVMExtraArgsV2"));
  bytes4 public constant EVM_EXTRA_ARGS_V2_TAG = 0x181dcf10;

  /// @param gasLimit: gas limit for the callback on the destination chain.
  /// @param allowOutOfOrderExecution: if true, it indicates that the message can be executed in any order relative to other messages from the same sender.
  /// This value's default varies by chain. On some chains, a particular value is enforced, meaning if the expected value
  /// is not set, the message request will revert.
  struct EVMExtraArgsV2 {
    uint256 gasLimit;
    bool allowOutOfOrderExecution;
  }

  function _argsToBytes(EVMExtraArgsV2 memory extraArgs) internal pure returns (bytes memory bts) {
    return abi.encodeWithSelector(EVM_EXTRA_ARGS_V2_TAG, extraArgs);
  }
}

File 6 of 26 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

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

File 7 of 26 : OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
    struct OwnableStorage {
        address _owner;
    }

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

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

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

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

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    function __Ownable_init(address initialOwner) internal onlyInitializing {
        __Ownable_init_unchained(initialOwner);
    }

    function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

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

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

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

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

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

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

File 8 of 26 : Initializable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

File 9 of 26 : UUPSUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.20;

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

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

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

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

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

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC-1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC-1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        _checkProxy();
        _;
    }

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

    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Implementation of the ERC-1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual notDelegated returns (bytes32) {
        return ERC1967Utils.IMPLEMENTATION_SLOT;
    }

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

    /**
     * @dev Reverts if the execution is not performed via delegatecall or the execution
     * context is not of a proxy with an ERC-1967 compliant implementation pointing to self.
     * See {_onlyProxy}.
     */
    function _checkProxy() internal view virtual {
        if (
            address(this) == __self || // Must be called through delegatecall
            ERC1967Utils.getImplementation() != __self // Must be called through an active proxy
        ) {
            revert UUPSUnauthorizedCallContext();
        }
    }

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

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

    /**
     * @dev Performs an implementation upgrade with a security check for UUPS proxies, and additional setup call.
     *
     * As a security check, {proxiableUUID} is invoked in the new implementation, and the return value
     * is expected to be the implementation slot in ERC-1967.
     *
     * Emits an {IERC1967-Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data) private {
        try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
            if (slot != ERC1967Utils.IMPLEMENTATION_SLOT) {
                revert UUPSUnsupportedProxiableUUID(slot);
            }
            ERC1967Utils.upgradeToAndCall(newImplementation, data);
        } catch {
            // The implementation is not UUPS
            revert ERC1967Utils.ERC1967InvalidImplementation(newImplementation);
        }
    }
}

File 10 of 26 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

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

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

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

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

File 11 of 26 : ReentrancyGuardUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

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

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

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

    /// @custom:storage-location erc7201:openzeppelin.storage.ReentrancyGuard
    struct ReentrancyGuardStorage {
        uint256 _status;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ReentrancyGuardStorageLocation = 0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

    function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $) {
        assembly {
            $.slot := ReentrancyGuardStorageLocation
        }
    }

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

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        $._status = NOT_ENTERED;
    }

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

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

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

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

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

File 12 of 26 : draft-IERC1822.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.20;

/**
 * @dev ERC-1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

File 13 of 26 : IERC1967.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1967.sol)

pragma solidity ^0.8.20;

/**
 * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.
 */
interface IERC1967 {
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

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

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

File 14 of 26 : IBeacon.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.20;

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

File 15 of 26 : ERC1967Utils.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (proxy/ERC1967/ERC1967Utils.sol)

pragma solidity ^0.8.21;

import {IBeacon} from "../beacon/IBeacon.sol";
import {IERC1967} from "../../interfaces/IERC1967.sol";
import {Address} from "../../utils/Address.sol";
import {StorageSlot} from "../../utils/StorageSlot.sol";

/**
 * @dev This library provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[ERC-1967] slots.
 */
library ERC1967Utils {
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1.
     */
    // solhint-disable-next-line private-vars-leading-underscore
    bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

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

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

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

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

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

    /**
     * @dev Stores a new address in the ERC-1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        if (newImplementation.code.length == 0) {
            revert ERC1967InvalidImplementation(newImplementation);
        }
        StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation;
    }

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

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

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

    /**
     * @dev Returns the current admin.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by ERC-1967) using
     * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the ERC-1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        if (newAdmin == address(0)) {
            revert ERC1967InvalidAdmin(address(0));
        }
        StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin;
    }

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

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

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

    /**
     * @dev Stores a new beacon in the ERC-1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        if (newBeacon.code.length == 0) {
            revert ERC1967InvalidBeacon(newBeacon);
        }

        StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon;

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

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

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

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

File 16 of 26 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

File 17 of 26 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Address.sol)

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

File 18 of 26 : Errors.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Errors.sol)

pragma solidity ^0.8.20;

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

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

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

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

File 19 of 26 : StorageSlot.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.20;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC-1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     // Define the slot. Alternatively, use the SlotDerivation library to derive the slot.
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(newImplementation.code.length > 0);
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * TIP: Consider using this library along with {SlotDerivation}.
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct Int256Slot {
        int256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

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

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

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

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

    /**
     * @dev Returns a `Int256Slot` with member `value` located at `slot`.
     */
    function getInt256Slot(bytes32 slot) internal pure returns (Int256Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

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

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

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

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

File 20 of 26 : IERC20_Ex.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20_Ex {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);

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

    /**
     * @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);
}

File 21 of 26 : IRouter.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IRouter {
    function initialiseRequest(address, uint256, bytes32) external returns (bool);
}

File 22 of 26 : ConsumerBase.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../vendor/OOOSafeMath.sol";
import "../interfaces/IERC20_Ex.sol";
import "../interfaces/IRouter.sol";
import "./RequestIdBase.sol";

/**
 * @title ConsumerBase smart contract
 *
 * @dev This contract can be imported by any smart contract wishing to include
 * off-chain data or data from a different network within it.
 *
 * The consumer initiates a data request by forwarding the request to the Router
 * smart contract, from where the data provider(s) pick up and process the
 * data request, and forward it back to the specified callback function.
 *
 */
abstract contract ConsumerBase is RequestIdBase {
    using OOOSafeMath for uint256;

    /*
     * STATE VARIABLES
     */

    // nonces for generating requestIds. Must be in sync with the
    // nonces defined in Router.sol.
    mapping(address => uint256) private nonces;

    IERC20_Ex internal xFUND;
    IRouter internal router;

    /*
     * WRITE FUNCTIONS
     */

    constructor() {

    }

    /**
     * @notice _setRouter is a helper function to allow changing the router contract address
     * Allows updating the router address. Future proofing for potential Router upgrades
     * NOTE: it is advisable to wrap this around a function that uses, for example, OpenZeppelin's
     * onlyOwner modifier
     *
     * @param _router address of the deployed Router smart contract
     */
    function _setRouter(address _router) internal returns (bool) {
        require(_router != address(0), "router cannot be the zero address");
        router = IRouter(_router);
        return true;
    }

    /**
     * @notice _increaseRouterAllowance is a helper function to increase token allowance for
     * the xFUND Router
     * Allows this contract to increase the xFUND allowance for the Router contract
     * enabling it to pay request fees on behalf of this contract.
     * NOTE: it is advisable to wrap this around a function that uses, for example, OpenZeppelin's
     * onlyOwner modifier
     *
     * @param _amount uint256 amount to increase allowance by
     */
    function _increaseRouterAllowance(uint256 _amount) internal returns (bool) {
        // The context of msg.sender is this contract's address
        require(xFUND.increaseAllowance(address(router), _amount), "failed to increase allowance");
        return true;
    }

    /**
     * @dev _requestData - initialises a data request. forwards the request to the deployed
     * Router smart contract.
     *
     * @param _dataProvider payable address of the data provider
     * @param _fee uint256 fee to be paid
     * @param _data bytes32 value of data being requested, e.g. PRICE.BTC.USD.AVG requests
     * average price for BTC/USD pair
     * @return requestId bytes32 request ID which can be used to track or cancel the request
     */
    function _requestData(address _dataProvider, uint256 _fee, bytes32 _data)
    internal returns (bytes32) {
        bytes32 requestId = makeRequestId(address(this), _dataProvider, address(router), nonces[_dataProvider], _data);
        // call the underlying ConsumerLib.sol lib's submitDataRequest function
        require(router.initialiseRequest(_dataProvider, _fee, _data));
        nonces[_dataProvider] = nonces[_dataProvider].safeAdd(1);
        return requestId;
    }

    /**
     * @dev rawReceiveData - Called by the Router's fulfillRequest function
     * in order to fulfil a data request. Data providers call the Router's fulfillRequest function
     * The request is validated to ensure it has indeed been sent via the Router.
     *
     * The Router will only call rawReceiveData once it has validated the origin of the data fulfillment.
     * rawReceiveData then calls the user defined receiveData function to finalise the fulfilment.
     * Contract developers will need to override the abstract receiveData function defined below.
     *
     * @param _price uint256 result being sent
     * @param _requestId bytes32 request ID of the request being fulfilled
     * has sent the data
     */
    function rawReceiveData(
        uint256 _price,
        bytes32 _requestId) external
    {
        // validate it came from the router
        require(msg.sender == address(router), "only Router can call");

        // call override function in end-user's contract
        receiveData(_price, _requestId);
    }

    /**
    * @dev receiveData - should be overridden by contract developers to process the
    * data fulfilment in their own contract.
    *
    * @param _price uint256 result being sent
    * @param _requestId bytes32 request ID of the request being fulfilled
    */
    function receiveData(
        uint256 _price,
        bytes32 _requestId
    ) internal virtual;

    /*
     * READ FUNCTIONS
     */

    /**
     * @dev getRouterAddress returns the address of the Router smart contract being used
     *
     * @return address
     */
    function getRouterAddress() external view returns (address) {
        return address(router);
    }

}

File 23 of 26 : RequestIdBase.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/**
 * @title RequestIdBase
 *
 * @dev A contract used by ConsumerBase and Router to generate requestIds
 *
 */
contract RequestIdBase {

    /**
    * @dev makeRequestId generates a requestId
    *
    * @param _dataConsumer address of consumer contract
    * @param _dataProvider address of provider
    * @param _router address of Router contract
    * @param _requestNonce uint256 request nonce
    * @param _data bytes32 hex encoded data endpoint
    *
    * @return bytes32 requestId
    */
    function makeRequestId(
        address _dataConsumer,
        address _dataProvider,
        address _router,
        uint256 _requestNonce,
        bytes32 _data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(_dataConsumer, _dataProvider, _router, _requestNonce, _data));
    }
}

File 24 of 26 : OOOSafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library OOOSafeMath {
    /**
    * @dev Returns the addition of two unsigned integers, reverting on
    * overflow.
    *
    * Counterpart to Solidity's `+` operator.
    *
    * Requirements:
    *
    * - Addition cannot overflow.
    */
    function safeAdd(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function safeSub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function safeMul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function saveDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function safeMod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
}

File 25 of 26 : ILandAuction.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.22;

/**
 * @title ILandAuction
 * @dev Interface for LandAuction contract, exposing only getCurrentBid functionality
 */
interface ILandAuction {
    /**
     * @dev Returns the current bid for given coordinates
     * @param x X-coordinate of the land
     * @param y Y-coordinate of the land
     * @return amount The bid amount
     * @return bidder The address of the bidder
     */
    function getCurrentBid(
        int16 x,
        int16 y
    ) external view returns (uint256 amount, address bidder);

    /**
     * @dev Returns the category for given coordinates
     */
    function getCategory(int16 x, int16 y) external view returns (int8);

    /**
     * @dev Returns the reserve price for given coordinates
     */
    function getReservePrice(int16 x, int16 y) external view returns (uint256);
}

File 26 of 26 : ILandRegistry.sol
//SPDX-License-Identifier: MIT
pragma solidity 0.8.22;

/**
 * @title ILandRegistry
 * @dev Interface for LandRegistry contract, defining core land management functions
 */
interface ILandRegistry {
    /**
     * @dev Mints a new land token at specified coordinates
     * @param user Address to receive the token
     * @param x X-coordinate of the land
     * @param y Y-coordinate of the land
     */
    function mint(
        address user,
        int16 x,
        int16 y
    ) external;

    /**
     * @dev Checks if a token exists by tokenId
     * @param tokenId The token identifier
     * @return bool indicating if the token exists
     */
    function exists(uint256 tokenId) external view returns (bool);

    /**
     * @dev Checks if a token exists at specific coordinates
     * @param x X-coordinate of the land
     * @param y Y-coordinate of the land
     * @return bool indicating if the token exists
     */
    function exists(int16 x, int16 y) external view returns (bool);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.