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// SPDX-License-Identifier: MIT
pragma solidity =0.8.21;

import {UUPSUpgradeable} from "openzeppelin-contracts-upgradeable/contracts/proxy/utils/UUPSUpgradeable.sol";
import {BaseAppUpgradeable} from "src/base/BaseAppUpgradeable.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @title Vault
 * @dev A contract for managing token operations with upgradeable functionality and cross-chain capabilities.
 */
contract Vault is UUPSUpgradeable, BaseAppUpgradeable {
    using SafeERC20 for IERC20;

    uint16 immutable dstChainId;

    /// @custom:storage-location erc7201:real.storage.Vault
    struct VaultStorage {
        // srcToken => dstToken
        mapping(address => address) tokenPairs;
    }

    // keccak256(abi.encode(uint256(keccak256("real.storage.Vault")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant VaultStorageLocation = 0xb6416d507a04e2a32445de45abf7290bf3bbe8e9fa76203447827b6ceacc5300;

    event UpdateTokenPairs(address indexed srcToken, address indexed dstToken);

    function _getVaultStorage() private pure returns (VaultStorage storage $) {
        // slither-disable-next-line assembly
        assembly {
            $.slot := VaultStorageLocation
        }
    }

    /**
     * @param endpoint_ The endpoint for Layer Zero operations.
     * @param dstChainId_ The chain id of the controller.
     * @custom:oz-upgrades-unsafe-allow constructor
     */
    constructor(address endpoint_, uint16 dstChainId_) BaseAppUpgradeable(endpoint_) {
        dstChainId = dstChainId_;
    }

    /**
     * @notice Initializes the vault with the initial owner.
     * @param initialOwner The admin address.
     */
    function initialize(address initialOwner) external initializer {
        __UUPSUpgradeable_init();
        __BaseApp_init(initialOwner);
    }

    /**
     * @dev The Vault can only be upgraded by the owner
     * @param v new Vault implementation
     */
    function _authorizeUpgrade(address v) internal override onlyOwner {}

    /**
     * @notice Adds a token pair to the whitelist and updates the token pairs mapping.
     * @param srcToken The address of the source token.
     * @param dstToken The address of the destination token.
     * @dev Only callable by the owner. Reverts if either token address is zero.
     */
    function setWhitelistToken(address srcToken, address dstToken) external onlyOwner {
        if (srcToken == address(0) || dstToken == address(0)) revert ZeroAddress();

        _updateWhitelistToken(srcToken, true);

        VaultStorage storage $ = _getVaultStorage();
        $.tokenPairs[srcToken] = dstToken;
        $.tokenPairs[dstToken] = srcToken;
        emit UpdateTokenPairs(srcToken, dstToken);
    }

    /**
     * @notice Removes a token from the whitelist and updates the token pairs mapping.
     * @param srcToken The address of the source token to remove.
     * @dev Only callable by the owner. Reverts if the token address is zero.
     */
    function removeWhitelistToken(address srcToken) external onlyOwner {
        if (srcToken == address(0)) revert ZeroAddress();

        _updateWhitelistToken(srcToken, false);

        VaultStorage storage $ = _getVaultStorage();
        address dstToken = $.tokenPairs[srcToken];
        $.tokenPairs[srcToken] = address(0);
        $.tokenPairs[dstToken] = address(0);

        emit UpdateTokenPairs(srcToken, address(0));
    }

    // ==================== INTERNAL ====================

    /**
     * @dev Internal function to handle token sending across chains.
     *
     * @param srcToken The address of the source token.
     * @param amount The amount of the token to send.
     * @param _adapterParams Adapter parameters for the Layer Zero send function.
     */
    function _send(uint16, address srcToken, uint256 amount, bytes memory _adapterParams) internal override {
        amount = _safeTransferFrom(srcToken, _msgSender(), address(this), amount);

        if (amount == 0) revert InvalidAmount();

        VaultStorage storage $ = _getVaultStorage();
        address _mainChainToken = $.tokenPairs[srcToken];
        bytes memory _payload = abi.encode(_mainChainToken, _msgSender(), amount);

        _lzSend(dstChainId, _payload, payable(_msgSender()), address(0x0), _adapterParams, msg.value);
    }

    /**
     * @dev Internal function to handle token receiving.
     * @param mainChainToken The address of the main chain token burned.
     * @param recipient The address of the recipient.
     * @param amount The amount of the token received.
     * @return The address of the source token.
     */
    function _receive(address mainChainToken, address recipient, uint256 amount) internal override returns (address) {
        VaultStorage storage $ = _getVaultStorage();
        address srcToken = $.tokenPairs[mainChainToken];
        if (srcToken == address(0) || !isWhitelistedToken(srcToken)) revert TokenNotAllowed();

        IERC20(srcToken).safeTransfer(recipient, amount);

        return srcToken;
    }

    /**
     * @dev Internal function to get the main chain token address from the source token address.
     * @param srcToken The address of the source token.
     * @return mainChainToken The address of the main chain token.
     */
    function _getMainChainToken(address srcToken) internal view override returns (address mainChainToken) {
        VaultStorage storage $ = _getVaultStorage();
        mainChainToken = $.tokenPairs[srcToken];
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
pragma solidity =0.8.21;

import {ReentrancyGuardUpgradeable} from
    "openzeppelin-contracts-upgradeable/contracts/utils/ReentrancyGuardUpgradeable.sol";
import {OwnableUpgradeable} from "openzeppelin-contracts-upgradeable/contracts/access/OwnableUpgradeable.sol";
import {NonblockingLzAppUpgradeable} from "@tangible/layerzero/lzApp/NonblockingLzAppUpgradeable.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @title BaseAppUpgradeable
 * @dev A base contract for managing token operations with upgradeable functionality, cross-chain capabilities, and security features.
 */
abstract contract BaseAppUpgradeable is ReentrancyGuardUpgradeable, OwnableUpgradeable, NonblockingLzAppUpgradeable {
    using SafeERC20 for IERC20;

    /// @custom:storage-location erc7201:real.storage.BaseApp
    struct BaseAppStorage {
        bool paused;
        bytes defaultAdapterParams;
        mapping(address => bool) whitelisted;
        mapping(address => address) tokenPairs; // srcToken => dstToken
    }

    // keccak256(abi.encode(uint256(keccak256("real.storage.BaseApp")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant BaseAppStorageLocation = 0x3ae64415efeba844fa889963cef544e4188d2a0d9305c2abef15a53cac216000;

    event Paused(bool isPaused);
    event Whitelisted(address indexed token, bool isWhitelisted);
    event BridgeToken(address indexed token, uint256 amount);
    event TokenClaimed(uint16 indexed srcId, address indexed token, address indexed receiver, uint256 amount);
    event TokenRescued(address indexed token, address indexed receiver, uint256 amount);
    event UpdateLzAdapterParams(uint256 limit);

    error ZeroAddress();
    error TokenNotAllowed();
    error IsPaused();
    error InvalidParam();
    error InvalidAmount();
    error NotAuthorized();

    function _getBaseAppStorage() private pure returns (BaseAppStorage storage $) {
        // slither-disable-next-line assembly
        assembly {
            $.slot := BaseAppStorageLocation
        }
    }

    /**
     * @param endpoint The address of the LayerZero endpoint contract.
     * @custom:oz-upgrades-unsafe-allow constructor
     */
    constructor(address endpoint) NonblockingLzAppUpgradeable(endpoint) {}

    /**
     * @notice BaseApp initializer
     * @param initialOwner The address of the initial owner.
     */
    function __BaseApp_init(address initialOwner) internal initializer {
        __ReentrancyGuard_init();
        __NonblockingLzApp_init(initialOwner);
        __BaseApp_init_unchained();
    }

    function __BaseApp_init_unchained() internal initializer {
        BaseAppStorage storage $ = _getBaseAppStorage();
        $.defaultAdapterParams = abi.encodePacked(uint16(1), uint256(200_000)); // set LayerZero adapter params for native fees
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     */
    modifier whenNotPaused() {
        BaseAppStorage storage $ = _getBaseAppStorage();
        if ($.paused) revert IsPaused();
        _;
    }

    /**
     * @dev Toggles the paused state of the contract.
     * @notice Only callable by the owner.
     */
    function togglePause() external onlyOwner {
        BaseAppStorage storage $ = _getBaseAppStorage();
        bool state = $.paused;
        $.paused = !state;
        emit Paused(!state);
    }

    /**
     * @notice Sets LayerZero adapter parameters.
     * @param limit The limit for the adapter parameters.
     * @dev Only callable by the owner. Reverts if the limit is below 200,000.
     */
    function setLzAdapterParams(uint256 limit) external onlyOwner {
        if (limit < 200_000) revert InvalidParam();
        BaseAppStorage storage $ = _getBaseAppStorage();
        $.defaultAdapterParams = abi.encodePacked(uint16(1), limit);
        emit UpdateLzAdapterParams(limit);
    }

    /**
     * @notice Bridges tokens to another chain.
     * @param _dstChainId The destination chain ID.
     * @param token The address of the source token.
     * @param amount The amount of the token to bridge.
     * @param _adapterParams Adapter parameters for the LayerZero send function.
     * @dev Callable by external accounts. Reverts if the contract is paused, the token is not whitelisted, or if any parameter is invalid.
     */
    function bridgeToken(uint16 _dstChainId, address token, uint256 amount, bytes memory _adapterParams)
        external
        payable
        nonReentrant
        whenNotPaused
    {
        if (token == address(0)) revert ZeroAddress();
        if (amount == 0) revert InvalidParam();

        BaseAppStorage storage $ = _getBaseAppStorage();
        if (!$.whitelisted[token]) revert TokenNotAllowed();

        _adapterParams = _adapterParams.length != 0 ? _adapterParams : $.defaultAdapterParams;

        _send(_dstChainId, token, amount, _adapterParams);

        emit BridgeToken(token, amount);
    }

    /**
     * @notice Rescues tokens accidentally sent to the contract.
     * @param token The address of the token to rescue.
     * @param to The address to send the rescued tokens to.
     * @param amount The amount of tokens to rescue.
     * @dev Only callable by the owner.
     */
    function rescueToken(address token, address to, uint256 amount) external onlyOwner {
        IERC20(token).safeTransfer(to, amount);
        emit TokenRescued(token, to, amount);
    }

    // ==================== INTERNAL ====================

    /**
     * @dev Updates the whitelist status of a token.
     * @param token The address of the token.
     * @param isWhitelisted The whitelist status of the token.
     */
    function _updateWhitelistToken(address token, bool isWhitelisted) internal {
        BaseAppStorage storage $ = _getBaseAppStorage();
        $.whitelisted[token] = isWhitelisted;
        emit Whitelisted(token, isWhitelisted);
    }

    /**
     * @dev Handles non-blocking LayerZero receive messages.
     * @param _srcChainId The source chain ID.
     * @param _payload The payload containing the token, recipient, and amount.
     */
    function _nonblockingLzReceive(
        uint16 _srcChainId,
        bytes memory, /*_srcAddress*/
        uint64, /*_nonce*/
        bytes memory _payload
    ) internal override nonReentrant whenNotPaused {
        (address payloadToken, address recipient, uint256 amount) = abi.decode(_payload, (address, address, uint256));

        address chainToken = _receive(payloadToken, recipient, amount);
        emit TokenClaimed(_srcChainId, chainToken, recipient, amount);
    }

    /**
     * @dev Safely transfers tokens from one address to another.
     * @param token The address of the token.
     * @param from The address to transfer tokens from.
     * @param to The address to transfer tokens to.
     * @param amount The amount of tokens to transfer.
     * @return received The amount of tokens received.
     */
    function _safeTransferFrom(address token, address from, address to, uint256 amount)
        internal
        returns (uint256 received)
    {
        uint256 balanceBefore = IERC20(token).balanceOf(to);
        IERC20(token).safeTransferFrom(from, to, amount);
        received = IERC20(token).balanceOf(to) - balanceBefore;
    }

    /**
     * @dev Internal function to handle token sending across chains.
     * @param _dstChainId The destination chain ID.
     * @param _srcToken The address of the chain token to send / burn.
     * @param _amount The amount of the token to send.
     * @param _adapterParams Adapter parameters for the LayerZero send function.
     */
    function _send(uint16 _dstChainId, address _srcToken, uint256 _amount, bytes memory _adapterParams)
        internal
        virtual;

    /**
     * @dev Internal function to handle token receiving.
     * @param token The address of the mainChain token received.
     * @param recipient The address of the recipient.
     * @param amount The amount of the token received.
     * @return The address of the token received.
     */
    function _receive(address token, address recipient, uint256 amount) internal virtual returns (address);

    /**
     * @dev Internal function to get the main chain token address.
     * @param token The address of the mainChain token.
     * @return The address of the main chain token.
     */
    function _getMainChainToken(address token) internal view virtual returns (address);

    // ==================== VIEW ====================

    function isWhitelistedToken(address token) public view returns (bool) {
        BaseAppStorage storage $ = _getBaseAppStorage();
        return $.whitelisted[token];
    }

    function getDefaultLZParam() public view returns (bytes memory) {
        BaseAppStorage storage $ = _getBaseAppStorage();
        return $.defaultAdapterParams;
    }

    /**
     * @notice Estimates the fees for bridging tokens.
     * @param dstChainId The destination chain ID.
     * @param token The address of the source token.
     * @param amount The amount of the token to bridge.
     * @param _adapterParams Adapter parameters for the LayerZero send function.
     * @return nativeFee The native fee for the operation.
     * @return zroFee The ZRO fee for the operation.
     */
    function estimateFees(uint16 dstChainId, address token, uint256 amount, bytes memory _adapterParams)
        public
        view
        returns (uint256 nativeFee, uint256 zroFee)
    {
        BaseAppStorage storage $ = _getBaseAppStorage();

        address mainChainToken = _getMainChainToken(token);
        if (mainChainToken == address(0)) revert ZeroAddress();

        bytes memory _payload = abi.encode(mainChainToken, _msgSender(), amount);
        _adapterParams = _adapterParams.length != 0 ? _adapterParams : $.defaultAdapterParams;

        return lzEndpoint.estimateFees(dstChainId, address(this), _payload, false, _adapterParams);
    }
}

// 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) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.20;

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon;

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

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (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 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;
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

import {ExcessivelySafeCall} from "@layerzerolabs/contracts/libraries/ExcessivelySafeCall.sol";

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

/**
 * @title Nonblocking LayerZero Application
 * @dev This contract extends LzAppUpgradeable and modifies its behavior to be non-blocking. Failed messages are caught
 * and stored for future retries, ensuring that the message channel remains unblocked. This contract serves as an
 * abstract base class and should be extended by specific implementations.
 *
 * Note: If the `srcAddress` is not configured properly, it will still block the message pathway from (`srcChainId`,
 * `srcAddress`).
 */
abstract contract NonblockingLzAppUpgradeable is LzAppUpgradeable {
    using ExcessivelySafeCall for address;

    event MessageFailed(uint16 srcChainId, bytes srcAddress, uint64 nonce, bytes payload, bytes reason);
    event RetryMessageSuccess(uint16 srcChainId, bytes srcAddress, uint64 nonce, bytes32 payloadHash);

    /// @custom:storage-location erc7201:layerzero.storage.NonblockingLzApp
    struct NonblockingLzAppStorage {
        mapping(uint16 => mapping(bytes => mapping(uint64 => bytes32))) failedMessages;
    }

    // keccak256(abi.encode(uint256(keccak256("layerzero.storage.NonblockingLzApp")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant NonblockingLzAppStorageLocation =
        0xe5a86fa43fa85f564c84895bd4f80ec5c29d03a57a0c1f7cb91d2cc05b4d8600;

    function _getNonblockingLzAppStorage() private pure returns (NonblockingLzAppStorage storage $) {
        // slither-disable-next-line assembly
        assembly {
            $.slot := NonblockingLzAppStorageLocation
        }
    }

    /**
     * @param endpoint The address of the LayerZero endpoint contract.
     * @custom:oz-upgrades-unsafe-allow constructor
     */
    constructor(address endpoint) LzAppUpgradeable(endpoint) {}

    /**
     * @dev Initializes the contract, setting the initial owner and endpoint addresses.
     * Also chains the initialization process with the base `LzAppUpgradeable` contract.
     *
     * Requirements:
     * - Can only be called during contract initialization.
     *
     * @param initialOwner The address that will initially own the contract.
     */
    function __NonblockingLzApp_init(address initialOwner) internal onlyInitializing {
        __NonblockingLzApp_init_unchained();
        __LzApp_init(initialOwner);
    }

    function __NonblockingLzApp_init_unchained() internal onlyInitializing {}

    /**
     * @dev Retrieves the hash of the payload of a failed message for a given source chain, source address, and nonce.
     *
     * @param srcChainId The ID of the source chain where the message originated.
     * @param srcAddress The address on the source chain where the message originated.
     * @param nonce The nonce of the failed message.
     * @return payloadHash The hash of the payload of the failed message.
     */
    function failedMessages(uint16 srcChainId, bytes calldata srcAddress, uint64 nonce)
        external
        view
        returns (bytes32 payloadHash)
    {
        NonblockingLzAppStorage storage $ = _getNonblockingLzAppStorage();
        return $.failedMessages[srcChainId][srcAddress][nonce];
    }

    /**
     * @dev Internal function that receives LayerZero messages and attempts to process them in a non-blocking manner.
     * If processing fails, the message is stored for future retries.
     *
     * @param srcChainId The ID of the source chain where the message originated.
     * @param srcAddress The address on the source chain where the message originated.
     * @param nonce The nonce of the message.
     * @param payload The payload of the message.
     */
    function _blockingLzReceive(uint16 srcChainId, bytes memory srcAddress, uint64 nonce, bytes memory payload)
        internal
        virtual
        override
    {
        (bool success, bytes memory reason) = address(this).excessivelySafeCall(
            gasleft(),
            150,
            abi.encodeWithSelector(this.nonblockingLzReceive.selector, srcChainId, srcAddress, nonce, payload)
        );
        // try-catch all errors/exceptions
        if (!success) {
            _storeFailedMessage(srcChainId, srcAddress, nonce, payload, reason);
        }
    }

    /**
     * @dev Internal function to store the details of a failed message for future retries.
     *
     * @param srcChainId The ID of the source chain where the message originated.
     * @param srcAddress The address on the source chain where the message originated.
     * @param nonce The nonce of the failed message.
     * @param payload The payload of the failed message.
     * @param reason The reason for the message's failure.
     */
    function _storeFailedMessage(
        uint16 srcChainId,
        bytes memory srcAddress,
        uint64 nonce,
        bytes memory payload,
        bytes memory reason
    ) internal virtual {
        NonblockingLzAppStorage storage $ = _getNonblockingLzAppStorage();
        $.failedMessages[srcChainId][srcAddress][nonce] = keccak256(payload);
        emit MessageFailed(srcChainId, srcAddress, nonce, payload, reason);
    }

    /**
     * @dev Public wrapper function for handling incoming LayerZero messages in a non-blocking manner.
     * It internally calls the `_nonblockingLzReceive` function, which should be overridden in derived contracts.
     *
     * Requirements:
     * - The caller must be the contract itself.
     *
     * @param srcChainId The ID of the source chain where the message originated.
     * @param srcAddress The address on the source chain where the message originated.
     * @param nonce The nonce of the message.
     * @param payload The payload of the message.
     */
    function nonblockingLzReceive(uint16 srcChainId, bytes calldata srcAddress, uint64 nonce, bytes calldata payload)
        public
        virtual
    {
        // only internal transaction
        require(_msgSender() == address(this), "NonblockingLzApp: caller must be LzApp");
        _nonblockingLzReceive(srcChainId, srcAddress, nonce, payload);
    }

    /**
     * @dev Internal function that should be overridden in derived contracts to implement the logic
     * for processing incoming LayerZero messages in a non-blocking manner.
     *
     * @param srcChainId The ID of the source chain where the message originated.
     * @param srcAddress The address on the source chain where the message originated.
     * @param nonce The nonce of the message.
     * @param payload The payload of the message.
     */
    function _nonblockingLzReceive(uint16 srcChainId, bytes memory srcAddress, uint64 nonce, bytes memory payload)
        internal
        virtual;

    /**
     * @dev Allows for the manual retry of a previously failed message.
     *
     * Requirements:
     * - There must be a stored failed message matching the provided parameters.
     * - The payload hash must match the stored failed message.
     *
     * @param srcChainId The ID of the source chain where the failed message originated.
     * @param srcAddress The address on the source chain where the failed message originated.
     * @param nonce The nonce of the failed message.
     * @param payload The payload of the failed message.
     */
    function retryMessage(uint16 srcChainId, bytes calldata srcAddress, uint64 nonce, bytes calldata payload)
        public
        payable
        virtual
    {
        NonblockingLzAppStorage storage $ = _getNonblockingLzAppStorage();
        mapping(uint64 => bytes32) storage _failedMessages = $.failedMessages[srcChainId][srcAddress];

        // get the payload hash value
        bytes32 payloadHash = _failedMessages[nonce];

        // assert there is message to retry
        require(payloadHash != bytes32(0), "NonblockingLzApp: no stored message");
        require(keccak256(payload) == payloadHash, "NonblockingLzApp: invalid payload");

        // clear the stored message
        _failedMessages[nonce] = bytes32(0);

        // execute the message. revert if it fails again
        _nonblockingLzReceive(srcChainId, srcAddress, nonce, payload);
        emit RetryMessageSuccess(srcChainId, srcAddress, nonce, payloadHash);
    }
}

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

pragma solidity ^0.8.20;

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

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

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

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

pragma solidity ^0.8.20;

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.20;

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

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

pragma solidity ^0.8.20;

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

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.7.6;

library ExcessivelySafeCall {
    uint constant LOW_28_MASK = 0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff;

    /// @notice Use when you _really_ really _really_ don't trust the called
    /// contract. This prevents the called contract from causing reversion of
    /// the caller in as many ways as we can.
    /// @dev The main difference between this and a solidity low-level call is
    /// that we limit the number of bytes that the callee can cause to be
    /// copied to caller memory. This prevents stupid things like malicious
    /// contracts returning 10,000,000 bytes causing a local OOG when copying
    /// to memory.
    /// @param _target The address to call
    /// @param _gas The amount of gas to forward to the remote contract
    /// @param _maxCopy The maximum number of bytes of returndata to copy
    /// to memory.
    /// @param _calldata The data to send to the remote contract
    /// @return success and returndata, as `.call()`. Returndata is capped to
    /// `_maxCopy` bytes.
    function excessivelySafeCall(
        address _target,
        uint _gas,
        uint16 _maxCopy,
        bytes memory _calldata
    ) internal returns (bool, bytes memory) {
        // set up for assembly call
        uint _toCopy;
        bool _success;
        bytes memory _returnData = new bytes(_maxCopy);
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            _success := call(
                _gas, // gas
                _target, // recipient
                0, // ether value
                add(_calldata, 0x20), // inloc
                mload(_calldata), // inlen
                0, // outloc
                0 // outlen
            )
            // limit our copy to 256 bytes
            _toCopy := returndatasize()
            if gt(_toCopy, _maxCopy) {
                _toCopy := _maxCopy
            }
            // Store the length of the copied bytes
            mstore(_returnData, _toCopy)
            // copy the bytes from returndata[0:_toCopy]
            returndatacopy(add(_returnData, 0x20), 0, _toCopy)
        }
        return (_success, _returnData);
    }

    /// @notice Use when you _really_ really _really_ don't trust the called
    /// contract. This prevents the called contract from causing reversion of
    /// the caller in as many ways as we can.
    /// @dev The main difference between this and a solidity low-level call is
    /// that we limit the number of bytes that the callee can cause to be
    /// copied to caller memory. This prevents stupid things like malicious
    /// contracts returning 10,000,000 bytes causing a local OOG when copying
    /// to memory.
    /// @param _target The address to call
    /// @param _gas The amount of gas to forward to the remote contract
    /// @param _maxCopy The maximum number of bytes of returndata to copy
    /// to memory.
    /// @param _calldata The data to send to the remote contract
    /// @return success and returndata, as `.call()`. Returndata is capped to
    /// `_maxCopy` bytes.
    function excessivelySafeStaticCall(
        address _target,
        uint _gas,
        uint16 _maxCopy,
        bytes memory _calldata
    ) internal view returns (bool, bytes memory) {
        // set up for assembly call
        uint _toCopy;
        bool _success;
        bytes memory _returnData = new bytes(_maxCopy);
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            _success := staticcall(
                _gas, // gas
                _target, // recipient
                add(_calldata, 0x20), // inloc
                mload(_calldata), // inlen
                0, // outloc
                0 // outlen
            )
            // limit our copy to 256 bytes
            _toCopy := returndatasize()
            if gt(_toCopy, _maxCopy) {
                _toCopy := _maxCopy
            }
            // Store the length of the copied bytes
            mstore(_returnData, _toCopy)
            // copy the bytes from returndata[0:_toCopy]
            returndatacopy(add(_returnData, 0x20), 0, _toCopy)
        }
        return (_success, _returnData);
    }

    /**
     * @notice Swaps function selectors in encoded contract calls
     * @dev Allows reuse of encoded calldata for functions with identical
     * argument types but different names. It simply swaps out the first 4 bytes
     * for the new selector. This function modifies memory in place, and should
     * only be used with caution.
     * @param _newSelector The new 4-byte selector
     * @param _buf The encoded contract args
     */
    function swapSelector(bytes4 _newSelector, bytes memory _buf) internal pure {
        require(_buf.length >= 4);
        uint _mask = LOW_28_MASK;
        assembly {
            // load the first word of
            let _word := mload(add(_buf, 0x20))
            // mask out the top 4 bytes
            // /x
            _word := and(_word, _mask)
            _word := or(_newSelector, _word)
            mstore(add(_buf, 0x20), _word)
        }
    }
}

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

import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";

import {ILayerZeroReceiver} from "@layerzerolabs/contracts/lzApp/interfaces/ILayerZeroReceiver.sol";
import {ILayerZeroUserApplicationConfig} from
    "@layerzerolabs/contracts/lzApp/interfaces/ILayerZeroUserApplicationConfig.sol";
import {ILayerZeroEndpoint} from "@layerzerolabs/contracts/lzApp/interfaces/ILayerZeroEndpoint.sol";
import {BytesLib} from "@layerzerolabs/contracts/libraries/BytesLib.sol";

/**
 * @title LzAppUpgradeable
 * @dev This is a generic implementation of LzReceiver, designed for LayerZero cross-chain communication.
 *
 * The contract inherits from `OwnableUpgradeable` and implements `ILayerZeroReceiver` and
 * `ILayerZeroUserApplicationConfig` interfaces. It provides functionality for setting and managing trusted remote
 * chains and their corresponding paths, configuring minimum destination gas, payload size limitations, and more.
 *
 * The contract uses a custom storage location `LzAppStorage`, which includes various mappings and state variables such
 * as `trustedRemoteLookup`, `minDstGasLookup`, and `payloadSizeLimitLookup`.
 *
 * Events:
 * - `SetPrecrime(address)`: Emitted when the precrime address is set.
 * - `SetTrustedRemote(uint16, bytes)`: Emitted when a trusted remote chain is set with its path.
 * - `SetTrustedRemoteAddress(uint16, bytes)`: Emitted when a trusted remote chain is set with its address.
 * - `SetMinDstGas(uint16, uint16, uint256)`: Emitted when minimum destination gas is set for a chain and packet type.
 *
 * Initialization:
 * The contract should be initialized by calling `__LzApp_init` function.
 *
 * Permissions:
 * Most administrative tasks require the sender to be the contract's owner.
 *
 * Note:
 * The contract includes the Checks-Effects-Interactions pattern and optimizes for gas-efficiency wherever applicable.
 */
abstract contract LzAppUpgradeable is OwnableUpgradeable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig {
    using BytesLib for bytes;

    // ua can not send payload larger than this by default, but it can be changed by the ua owner
    uint256 public constant DEFAULT_PAYLOAD_SIZE_LIMIT = 10_000;

    event SetPrecrime(address precrime);
    event SetTrustedRemote(uint16 _remoteChainId, bytes _path);
    event SetTrustedRemoteAddress(uint16 _remoteChainId, bytes _remoteAddress);
    event SetMinDstGas(uint16 _dstChainId, uint16 _type, uint256 _minDstGas);

    /// @custom:storage-location erc7201:layerzero.storage.LzApp
    struct LzAppStorage {
        mapping(uint16 => bytes) trustedRemoteLookup;
        mapping(uint16 => mapping(uint16 => uint256)) minDstGasLookup;
        mapping(uint16 => uint256) payloadSizeLimitLookup;
        address precrime;
    }

    // keccak256(abi.encode(uint256(keccak256("layerzero.storage.LzApp")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant LzAppStorageLocation = 0x111388274dd962a0529050efb131321f60015c2ab1a99387d94540f430037b00;

    function _getLzAppStorage() private pure returns (LzAppStorage storage $) {
        // slither-disable-next-line assembly
        assembly {
            $.slot := LzAppStorageLocation
        }
    }

    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable
    ILayerZeroEndpoint public immutable lzEndpoint;

    /**
     * @param endpoint Address of the LayerZero endpoint contract.
     * @custom:oz-upgrades-unsafe-allow constructor
     */
    constructor(address endpoint) {
        lzEndpoint = ILayerZeroEndpoint(endpoint);
    }

    /**
     * @dev Initializes the contract with the given `initialOwner`.
     *
     * Requirements:
     * - The function should only be called during the initialization process.
     *
     * @param initialOwner Address of the initial owner of the contract.
     */
    function __LzApp_init(address initialOwner) internal onlyInitializing {
        __LzApp_init_unchained();
        __Ownable_init(initialOwner);
    }

    function __LzApp_init_unchained() internal onlyInitializing {}

    /**
     * @dev Returns the trusted path for a given remote chain ID.
     *
     * @param remoteChainId The ID of the remote chain to query for a trusted path.
     * @return path Bytes representation of the trusted path for the specified remote chain ID.
     */
    function trustedRemoteLookup(uint16 remoteChainId) external view returns (bytes memory path) {
        LzAppStorage storage $ = _getLzAppStorage();
        path = $.trustedRemoteLookup[remoteChainId];
    }

    /**
     * @dev Returns the minimum gas required for a given destination chain ID and packet type.
     *
     * @param dstChainId The ID of the destination chain to query for a minimum gas limit.
     * @param packetType The type of packet for which the minimum gas limit is to be fetched.
     * @return minGas The minimum gas limit required for the specified destination chain ID and packet type.
     */
    function minDstGasLookup(uint16 dstChainId, uint16 packetType) external view returns (uint256 minGas) {
        LzAppStorage storage $ = _getLzAppStorage();
        minGas = $.minDstGasLookup[dstChainId][packetType];
    }

    /**
     * @dev Returns the payload size limit for a given destination chain ID.
     *
     * @param dstChainId The ID of the destination chain to query for a payload size limit.
     * @return size The maximum allowable payload size in bytes for the specified destination chain ID.
     */
    function payloadSizeLimitLookup(uint16 dstChainId) external view returns (uint256 size) {
        LzAppStorage storage $ = _getLzAppStorage();
        size = $.payloadSizeLimitLookup[dstChainId];
    }

    /**
     * @dev Returns the address of the precrime contract.
     *
     * @return _precrime The address of the precrime contract.
     */
    function precrime() external view returns (address _precrime) {
        LzAppStorage storage $ = _getLzAppStorage();
        _precrime = $.precrime;
    }

    /**
     * @dev Handles incoming LayerZero messages from a source chain.
     * This function must be called by the LayerZero endpoint and validates the source of the message.
     *
     * Requirements:
     * - Caller must be the LayerZero endpoint.
     * - Source address must be a trusted remote address.
     *
     * @param srcChainId The ID of the source chain from which the message is sent.
     * @param srcAddress The address on the source chain that is sending the message.
     * @param nonce A unique identifier for the message.
     * @param payload The actual data payload of the message.
     */
    function lzReceive(uint16 srcChainId, bytes calldata srcAddress, uint64 nonce, bytes calldata payload)
        public
        virtual
        override
    {
        LzAppStorage storage $ = _getLzAppStorage();

        // lzReceive must be called by the endpoint for security
        require(_msgSender() == address(lzEndpoint), "LzApp: invalid endpoint caller");

        bytes memory trustedRemote = $.trustedRemoteLookup[srcChainId];
        // if will still block the message pathway from (srcChainId, srcAddress). should not receive message from
        // untrusted remote.
        require(
            srcAddress.length == trustedRemote.length && trustedRemote.length != 0
                && keccak256(srcAddress) == keccak256(trustedRemote),
            "LzApp: invalid source sending contract"
        );

        _blockingLzReceive(srcChainId, srcAddress, nonce, payload);
    }

    /**
     * @dev Internal function that handles incoming LayerZero messages in a blocking manner.
     * This is an abstract function and should be implemented by derived contracts.
     *
     * @param srcChainId The ID of the source chain from which the message is sent.
     * @param srcAddress The address on the source chain that is sending the message.
     * @param nonce A unique identifier for the message.
     * @param payload The actual data payload of the message.
     */
    function _blockingLzReceive(uint16 srcChainId, bytes memory srcAddress, uint64 nonce, bytes memory payload)
        internal
        virtual;

    /**
     * @dev Internal function to send a LayerZero message to a destination chain.
     * It performs a series of validations before sending the message.
     *
     * Requirements:
     * - Destination chain must be a trusted remote.
     * - Payload size must be within the configured limit.
     *
     * @param dstChainId The ID of the destination chain.
     * @param payload The actual data payload to be sent.
     * @param refundAddress The address to which any refunds should be sent.
     * @param zroPaymentAddress The address for the ZRO token payment.
     * @param adapterParams Additional parameters required for the adapter.
     * @param nativeFee The native fee to be sent along with the message.
     */
    function _lzSend(
        uint16 dstChainId,
        bytes memory payload,
        address payable refundAddress,
        address zroPaymentAddress,
        bytes memory adapterParams,
        uint256 nativeFee
    ) internal virtual {
        LzAppStorage storage $ = _getLzAppStorage();
        bytes memory trustedRemote = $.trustedRemoteLookup[dstChainId];
        require(trustedRemote.length != 0, "LzApp: destination chain is not a trusted source");
        _checkPayloadSize(dstChainId, payload.length);
        lzEndpoint.send{value: nativeFee}(
            dstChainId, trustedRemote, payload, refundAddress, zroPaymentAddress, adapterParams
        );
    }

    /**
     * @dev Internal function to validate if the provided gas limit meets the minimum requirement for a given packet
     * type and destination chain.
     *
     * Requirements:
     * - The minimum destination gas limit must be set for the given packet type and destination chain.
     * - Provided gas limit should be greater than or equal to the sum of the minimum gas limit and any extra gas.
     *
     * @param dstChainId The ID of the destination chain.
     * @param packetType The type of the packet being sent.
     * @param adapterParams Additional parameters required for the adapter.
     * @param extraGas Extra gas to be added to the minimum required gas.
     */
    function _checkGasLimit(uint16 dstChainId, uint16 packetType, bytes memory adapterParams, uint256 extraGas)
        internal
        view
        virtual
    {
        LzAppStorage storage $ = _getLzAppStorage();
        uint256 providedGasLimit = _getGasLimit(adapterParams);
        uint256 minGasLimit = $.minDstGasLookup[dstChainId][packetType];
        require(minGasLimit != 0, "LzApp: minGasLimit not set");
        require(providedGasLimit >= minGasLimit + extraGas, "LzApp: gas limit is too low");
    }

    /**
     * @dev Internal function to extract the gas limit from the adapter parameters.
     *
     * Requirements:
     * - The `adapterParams` must be at least 34 bytes long to contain the gas limit.
     *
     * @param _adapterParams The adapter parameters from which the gas limit is to be extracted.
     * @return gasLimit The extracted gas limit.
     */
    function _getGasLimit(bytes memory _adapterParams) internal pure virtual returns (uint256 gasLimit) {
        require(_adapterParams.length >= 34, "LzApp: invalid adapterParams");
        // slither-disable-next-line assembly
        assembly {
            gasLimit := mload(add(_adapterParams, 34))
        }
    }

    /**
     * @dev Internal function to validate the size of the payload against the configured limit for a given destination
     * chain.
     *
     * Requirements:
     * - Payload size must be less than or equal to the configured size limit for the given destination chain.
     *
     * @param _dstChainId The ID of the destination chain.
     * @param _payloadSize The size of the payload in bytes.
     */
    function _checkPayloadSize(uint16 _dstChainId, uint256 _payloadSize) internal view virtual {
        LzAppStorage storage $ = _getLzAppStorage();
        uint256 payloadSizeLimit = $.payloadSizeLimitLookup[_dstChainId];
        if (payloadSizeLimit == 0) {
            // use default if not set
            payloadSizeLimit = DEFAULT_PAYLOAD_SIZE_LIMIT;
        }
        require(_payloadSize <= payloadSizeLimit, "LzApp: payload size is too large");
    }

    /**
     * @dev Retrieves the configuration of the LayerZero user application for a given version, chain ID, and config
     * type.
     *
     * @param version The version for which the configuration is to be fetched.
     * @param chainId The ID of the chain for which the configuration is needed.
     * @param configType The type of the configuration to be retrieved.
     * @return The bytes representation of the configuration.
     */
    function getConfig(uint16 version, uint16 chainId, address, uint256 configType)
        external
        view
        returns (bytes memory)
    {
        return lzEndpoint.getConfig(version, chainId, address(this), configType);
    }

    /**
     * @dev Sets the configuration of the LayerZero user application for a given version, chain ID, and config type.
     *
     * Requirements:
     * - Only the owner can set the configuration.
     *
     * @param version The version for which the configuration is to be set.
     * @param chainId The ID of the chain for which the configuration is being set.
     * @param configType The type of the configuration to be set.
     * @param config The actual configuration data in bytes format.
     */
    function setConfig(uint16 version, uint16 chainId, uint256 configType, bytes calldata config)
        external
        override
        onlyOwner
    {
        lzEndpoint.setConfig(version, chainId, configType, config);
    }

    /**
     * @dev Sets the version to be used for sending LayerZero messages.
     *
     * Requirements:
     * - Only the owner can set the send version.
     *
     * @param version The version to be set for sending messages.
     */
    function setSendVersion(uint16 version) external override onlyOwner {
        lzEndpoint.setSendVersion(version);
    }

    /**
     * @dev Sets the version to be used for receiving LayerZero messages.
     *
     * Requirements:
     * - Only the owner can set the receive version.
     *
     * @param version The version to be set for receiving messages.
     */
    function setReceiveVersion(uint16 version) external override onlyOwner {
        lzEndpoint.setReceiveVersion(version);
    }

    /**
     * @dev Resumes the reception of LayerZero messages from a specific source chain and address.
     *
     * Requirements:
     * - Only the owner can force the resumption of message reception.
     *
     * @param srcChainId The ID of the source chain from which message reception is to be resumed.
     * @param srcAddress The address on the source chain for which message reception is to be resumed.
     */
    function forceResumeReceive(uint16 srcChainId, bytes calldata srcAddress) external override onlyOwner {
        lzEndpoint.forceResumeReceive(srcChainId, srcAddress);
    }

    /**
     * @dev Sets the trusted path for cross-chain communication with a specified remote chain.
     *
     * Requirements:
     * - Only the owner can set the trusted path.
     *
     * @param remoteChainId The ID of the remote chain for which the trusted path is being set.
     * @param path The trusted path encoded as bytes.
     */
    function setTrustedRemote(uint16 remoteChainId, bytes calldata path) external onlyOwner {
        LzAppStorage storage $ = _getLzAppStorage();
        $.trustedRemoteLookup[remoteChainId] = path;
        emit SetTrustedRemote(remoteChainId, path);
    }

    /**
     * @dev Sets the trusted remote address for cross-chain communication with a specified remote chain.
     * The function also automatically appends the contract's own address to the path.
     *
     * Requirements:
     * - Only the owner can set the trusted remote address.
     *
     * @param remoteChainId The ID of the remote chain for which the trusted address is being set.
     * @param remoteAddress The trusted remote address encoded as bytes.
     */
    function setTrustedRemoteAddress(uint16 remoteChainId, bytes calldata remoteAddress) external onlyOwner {
        LzAppStorage storage $ = _getLzAppStorage();
        $.trustedRemoteLookup[remoteChainId] = abi.encodePacked(remoteAddress, address(this));
        emit SetTrustedRemoteAddress(remoteChainId, remoteAddress);
    }

    /**
     * @dev Retrieves the trusted remote address for a given remote chain.
     *
     * Requirements:
     * - A trusted path record must exist for the specified remote chain.
     *
     * @param remoteChainId The ID of the remote chain for which the trusted address is needed.
     * @return The trusted remote address encoded as bytes.
     */
    function getTrustedRemoteAddress(uint16 remoteChainId) external view returns (bytes memory) {
        LzAppStorage storage $ = _getLzAppStorage();
        bytes memory path = $.trustedRemoteLookup[remoteChainId];
        require(path.length != 0, "LzApp: no trusted path record");
        return path.slice(0, path.length - 20); // the last 20 bytes should be address(this)
    }

    /**
     * @dev Sets the "Precrime" address, which could be an address for handling fraudulent activities or other specific
     * behaviors.
     *
     * Requirements:
     * - Only the owner can set the Precrime address.
     *
     * @param _precrime The address to be set as Precrime.
     */
    function setPrecrime(address _precrime) external onlyOwner {
        LzAppStorage storage $ = _getLzAppStorage();
        $.precrime = _precrime;
        emit SetPrecrime(_precrime);
    }

    /**
     * @dev Sets the minimum required gas for a specific packet type and destination chain.
     *
     * Requirements:
     * - Only the owner can set the minimum destination gas.
     *
     * @param dstChainId The ID of the destination chain for which the minimum gas is being set.
     * @param packetType The type of the packet for which the minimum gas is being set.
     * @param minGas The minimum required gas in units.
     */
    function setMinDstGas(uint16 dstChainId, uint16 packetType, uint256 minGas) external onlyOwner {
        LzAppStorage storage $ = _getLzAppStorage();
        $.minDstGasLookup[dstChainId][packetType] = minGas;
        emit SetMinDstGas(dstChainId, packetType, minGas);
    }

    /**
     * @dev Sets the payload size limit for a specific destination chain.
     *
     * Requirements:
     * - Only the owner can set the payload size limit.
     *
     * @param dstChainId The ID of the destination chain for which the payload size limit is being set.
     * @param size The size limit in bytes.
     */
    function setPayloadSizeLimit(uint16 dstChainId, uint256 size) external onlyOwner {
        LzAppStorage storage $ = _getLzAppStorage();
        $.payloadSizeLimitLookup[dstChainId] = size;
    }

    /**
     * @dev Checks whether a given source chain and address are trusted for receiving LayerZero messages.
     *
     * @param srcChainId The ID of the source chain to be checked.
     * @param srcAddress The address on the source chain to be verified.
     * @return A boolean indicating whether the source chain and address are trusted.
     */
    function isTrustedRemote(uint16 srcChainId, bytes calldata srcAddress) external view returns (bool) {
        LzAppStorage storage $ = _getLzAppStorage();
        bytes memory trustedSource = $.trustedRemoteLookup[srcChainId];
        return keccak256(trustedSource) == keccak256(srcAddress);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

interface ILayerZeroReceiver {
    // @notice LayerZero endpoint will invoke this function to deliver the message on the destination
    // @param _srcChainId - the source endpoint identifier
    // @param _srcAddress - the source sending contract address from the source chain
    // @param _nonce - the ordered message nonce
    // @param _payload - the signed payload is the UA bytes has encoded to be sent
    function lzReceive(
        uint16 _srcChainId,
        bytes calldata _srcAddress,
        uint64 _nonce,
        bytes calldata _payload
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

interface ILayerZeroUserApplicationConfig {
    // @notice set the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _configType - type of configuration. every messaging library has its own convention.
    // @param _config - configuration in the bytes. can encode arbitrary content.
    function setConfig(
        uint16 _version,
        uint16 _chainId,
        uint _configType,
        bytes calldata _config
    ) external;

    // @notice set the send() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setSendVersion(uint16 _version) external;

    // @notice set the lzReceive() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setReceiveVersion(uint16 _version) external;

    // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
    // @param _srcChainId - the chainId of the source chain
    // @param _srcAddress - the contract address of the source contract at the source chain
    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "./ILayerZeroUserApplicationConfig.sol";

interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
    // @notice send a LayerZero message to the specified address at a LayerZero endpoint.
    // @param _dstChainId - the destination chain identifier
    // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
    // @param _payload - a custom bytes payload to send to the destination contract
    // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
    // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
    // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
    function send(
        uint16 _dstChainId,
        bytes calldata _destination,
        bytes calldata _payload,
        address payable _refundAddress,
        address _zroPaymentAddress,
        bytes calldata _adapterParams
    ) external payable;

    // @notice used by the messaging library to publish verified payload
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source contract (as bytes) at the source chain
    // @param _dstAddress - the address on destination chain
    // @param _nonce - the unbound message ordering nonce
    // @param _gasLimit - the gas limit for external contract execution
    // @param _payload - verified payload to send to the destination contract
    function receivePayload(
        uint16 _srcChainId,
        bytes calldata _srcAddress,
        address _dstAddress,
        uint64 _nonce,
        uint _gasLimit,
        bytes calldata _payload
    ) external;

    // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);

    // @notice get the outboundNonce from this source chain which, consequently, is always an EVM
    // @param _srcAddress - the source chain contract address
    function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);

    // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
    // @param _dstChainId - the destination chain identifier
    // @param _userApplication - the user app address on this EVM chain
    // @param _payload - the custom message to send over LayerZero
    // @param _payInZRO - if false, user app pays the protocol fee in native token
    // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
    function estimateFees(
        uint16 _dstChainId,
        address _userApplication,
        bytes calldata _payload,
        bool _payInZRO,
        bytes calldata _adapterParam
    ) external view returns (uint nativeFee, uint zroFee);

    // @notice get this Endpoint's immutable source identifier
    function getChainId() external view returns (uint16);

    // @notice the interface to retry failed message on this Endpoint destination
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    // @param _payload - the payload to be retried
    function retryPayload(
        uint16 _srcChainId,
        bytes calldata _srcAddress,
        bytes calldata _payload
    ) external;

    // @notice query if any STORED payload (message blocking) at the endpoint.
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);

    // @notice query if the _libraryAddress is valid for sending msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getSendLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the _libraryAddress is valid for receiving msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getReceiveLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the non-reentrancy guard for send() is on
    // @return true if the guard is on. false otherwise
    function isSendingPayload() external view returns (bool);

    // @notice query if the non-reentrancy guard for receive() is on
    // @return true if the guard is on. false otherwise
    function isReceivingPayload() external view returns (bool);

    // @notice get the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _userApplication - the contract address of the user application
    // @param _configType - type of configuration. every messaging library has its own convention.
    function getConfig(
        uint16 _version,
        uint16 _chainId,
        address _userApplication,
        uint _configType
    ) external view returns (bytes memory);

    // @notice get the send() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getSendVersion(address _userApplication) external view returns (uint16);

    // @notice get the lzReceive() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getReceiveVersion(address _userApplication) external view returns (uint16);
}

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

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

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

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

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

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

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

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

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

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

        return tempBytes;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    function slice(
        bytes memory _bytes,
        uint _start,
        uint _length
    ) internal pure returns (bytes memory) {
        require(_length + 31 >= _length, "slice_overflow");
        require(_bytes.length >= _start + _length, "slice_outOfBounds");

        bytes memory tempBytes;

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

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

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

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

                mstore(tempBytes, _length)

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

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

        return tempBytes;
    }

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

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

        return tempAddress;
    }

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

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

        return tempUint;
    }

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

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

        return tempUint;
    }

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

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

        return tempUint;
    }

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

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

        return tempUint;
    }

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

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

        return tempUint;
    }

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

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

        return tempUint;
    }

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

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

        return tempUint;
    }

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

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

        return tempBytes32;
    }

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

        assembly {
            let length := mload(_preBytes)

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

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

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

        return success;
    }

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

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

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

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

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

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

                        // the next line is the loop condition:
                        // while(uint256(mc < end) + cb == 2)
                        for {

                        } eq(add(lt(mc, end), cb), 2) {
                            sc := add(sc, 1)
                            mc := add(mc, 0x20)
                        } {
                            if iszero(eq(sload(sc), mload(mc))) {
                                // unsuccess:
                                success := 0
                                cb := 0
                            }
                        }
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

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nternalType":"uint16","name":"remoteChainId","type":"uint16"}],"name":"trustedRemoteLookup","outputs":[{"internalType":"bytes","name":"path","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"}]

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00000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd67500000000000000000000000000000000000000000000000000000000000000ed

-----Decoded View---------------
Arg [0] : endpoint_ (address): 0x66A71Dcef29A0fFBDBE3c6a460a3B5BC225Cd675
Arg [1] : dstChainId_ (uint16): 237

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd675
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000ed