// File: @openzeppelin/contracts/token/ERC20/ERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

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

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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 amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

// File: contracts/test/ReclaimerContract3.sol



// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.8.19;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

interface IPool {
  function flashLoan( address receiverAddress, address[] calldata assets, uint256[] calldata amounts, uint256[] memory interestRateModes, address onBehalfOf, bytes calldata params, uint16 referralCode) external;
}

interface ISilo {
    function depositFor(address _asset, address _depositor, uint256 _amount, bool _collateralOnly) external;
    function repayFor(address _asset, address _borrower, uint256 _amount) external;
    function withdraw(address _asset, uint256 _amount, bool _collateralOnly) external;
    function withdrawFor(address _asset, address _depositor, address _receiver, uint256 _amount, bool _collateralOnly) external;
}

interface IWETH {
    function deposit() external payable;
    function withdraw(uint256) external;
    function transfer(address to, uint256 value) external returns (bool);
    function approve(address spender, uint256 amount) external returns (bool);
}

interface IUniswapV3Router {
    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }
    function exactOutputSingle(ExactOutputSingleParams calldata params) external returns (uint256 amountIn);
}

interface IUniswapV3Factory {
    function getPool(address tokenA, address tokenB, uint24 fee) external view returns (address pool);
}

contract ReclaimerContract3 {
    // protocols
    address constant private AAVE = 0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2;
    address constant private SILO_1 = 0xB1590d554dC7d66F710369983b46a5905AD34c8c;
    address constant private SILO_2 = 0xFCCc27AABd0AB7a0B2Ad2B7760037B1eAb61616b;
    address constant private UNISWAP_V3_ROUTER = 0xE592427A0AEce92De3Edee1F18E0157C05861564;

    // silo 1 tokens
    address constant private SXAI_COLLATERAL = 0x8CCD889bb3a0252b803B6B6eaA0404c40CF8Cca7;
    address constant private DWETH_DEBT = 0x5748686318Aad9F4759a9d7710CCcbF28aFeBBAb;
    address constant private DRETH_DEBT = 0xA5a688DfAa51AAfb34B846B25c62Ca792AECc95C;

    // silo 2 tokens
    address constant private SWETH_COLLATERAL = 0x818Ae48449DfdF908F7bb58f7aa2Ba16863f79dF;
    address constant private DUSDC_DEBT = 0x35406DFcF3234222ed1046B04C2E912B37d87258;
    address constant private DXAI_DEBT = 0x3C9124C18CE9fB99724cf0a8080bEeeF8B0D3cf6;

    // underlying tokens
    address constant private WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address constant private RETH = 0xae78736Cd615f374D3085123A210448E74Fc6393;
    address constant private USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address constant private XAI = 0xd7C9F0e536dC865Ae858b0C0453Fe76D13c3bEAc;

    // users
    address constant private USER = 0xa325076Ab0e701eec54D0072974D0fD26B31612C;
    address constant private RECEIVER = 0xD3e842A1D04F9Edaa328cca8874C8896F0044CfB;
    address immutable private deployer;
   
    uint256 private sXaiReclaimAmount;
    uint256 private wEthReclaimAmount;
    uint256[3] private flashBorrowAmounts;
    uint256[2] private swapRates;

    modifier onlyDeployer() {
        require(msg.sender == deployer, "Not deployer");
        _;
    }
    constructor(uint256 _sXaiReclaimAmount, uint256 _wEthReclaimAmount, uint256[3] memory _flashBorrowAmounts, uint256[2] memory _swapRates) {
        deployer = msg.sender;
        sXaiReclaimAmount = _sXaiReclaimAmount;
        wEthReclaimAmount = _wEthReclaimAmount;
        flashBorrowAmounts[0] = _flashBorrowAmounts[0];
        flashBorrowAmounts[1] = _flashBorrowAmounts[1];
        flashBorrowAmounts[2] = _flashBorrowAmounts[2];
        swapRates[0] = _swapRates[0];
        swapRates[1] = _swapRates[1];
    }

    function setParams(uint256 _sXaiReclaimAmount, uint256 _wEthReclaimAmount, uint256[3] memory _flashBorrowAmounts, uint256[2] memory _swapRates) external onlyDeployer {
        sXaiReclaimAmount = _sXaiReclaimAmount;
        wEthReclaimAmount = _wEthReclaimAmount;
        flashBorrowAmounts[0] = _flashBorrowAmounts[0];
        flashBorrowAmounts[1] = _flashBorrowAmounts[1];
        flashBorrowAmounts[2] = _flashBorrowAmounts[2];
        swapRates[0] = _swapRates[0];
        swapRates[1] = _swapRates[1];
    }

    // Receive function to accept ETH
    receive() external payable {
    }

    function run() external {
        // Hardcoded addresses for WETH, RETH, USDC
        address[] memory assets = new address[](3);
        assets[0] = address(WETH);
        assets[1] = address(RETH);
        assets[2] = address(USDC);

        // Hardcoded amounts
        uint256[] memory _flashBorrowAmounts = new uint256[](3);
        _flashBorrowAmounts[0] = flashBorrowAmounts[0];
        _flashBorrowAmounts[1] = flashBorrowAmounts[1];
        _flashBorrowAmounts[2] = flashBorrowAmounts[2];

        // Modes array, set to 0 for all assets
        uint256[] memory modes = new uint256[](3);
        modes[0] = 0;
        modes[1] = 0;
        modes[2] = 0;

        // Swap rates
        uint256[] memory _swapRates = new uint256[](2);
        _swapRates[0] = swapRates[0];
        _swapRates[1] = swapRates[1];

        IPool(address(AAVE)).flashLoan(address(this), assets, _flashBorrowAmounts, modes, address(0), bytes(""), 0);
    }

    function executeOperation(
        address[] calldata /*_assets*/,
        uint256[] calldata _flashBorrowAmounts,
        uint256[] calldata premiums,
        address /*initiator*/,
        bytes calldata /*params*/
    ) external returns (bool) {
        require(msg.sender == address(AAVE), "Caller must be Aave Lending Pool");

        // Repay debt in silo 1
        ERC20(WETH).approve(SILO_1, type(uint256).max);
        ERC20(RETH).approve(SILO_1, type(uint256).max);
        ISilo(SILO_1).repayFor(WETH, USER, _flashBorrowAmounts[0]);
        ISilo(SILO_1).repayFor(RETH, USER, _flashBorrowAmounts[1]);

        // Reclaim SXAI collateral from silo 1
        ERC20(SXAI_COLLATERAL).transferFrom(USER, address(this), sXaiReclaimAmount);

        // Redeem SXAI for XAI
        ISilo(SILO_1).withdraw(XAI, type(uint256).max, false);

        // Repay XAI debt in silo 2
        ERC20(XAI).approve(SILO_2, type(uint256).max);
        ISilo(SILO_2).repayFor(XAI, USER, ERC20(XAI).balanceOf(address(this)));

        // Repay USDC debt in silo 2
        ERC20(USDC).approve(SILO_2, type(uint256).max);
        ISilo(SILO_2).repayFor(USDC, USER, flashBorrowAmounts[2]);

        // Reclaim WETH collateral from silo 2
        ERC20(SWETH_COLLATERAL).transferFrom(USER, address(this), wEthReclaimAmount);
        ISilo(SILO_2).withdraw(WETH, type(uint256).max, false);

        // Swap WETH to repay flashloans
        ERC20(WETH).approve(UNISWAP_V3_ROUTER, type(uint256).max);
        swapWEthForTargetAmount(500, RETH, flashBorrowAmounts[1] + premiums[1], swapRates[0]);
        swapWEthForTargetAmount(500, USDC, flashBorrowAmounts[2] + premiums[2], swapRates[1]);

        // Approve Aave for repayment
        ERC20(WETH).approve(AAVE, flashBorrowAmounts[0]+premiums[0]);
        ERC20(RETH).approve(AAVE, flashBorrowAmounts[1]+premiums[1]);
        ERC20(USDC).approve(AAVE, flashBorrowAmounts[2]+premiums[2]);

        // Transfer remainder to RECEIVER
        ERC20(WETH).transfer(RECEIVER, ERC20(WETH).balanceOf(address(this)) - (flashBorrowAmounts[0]+premiums[0]));
        ERC20(RETH).transfer(RECEIVER, ERC20(RETH).balanceOf(address(this)) - (flashBorrowAmounts[1]+premiums[1]));
        ERC20(USDC).transfer(RECEIVER, ERC20(USDC).balanceOf(address(this)) - (flashBorrowAmounts[2]+premiums[2]));
        ERC20(XAI).transfer(RECEIVER, ERC20(XAI).balanceOf(address(this)));
        
        return true;
    }

    function transfer(address token, address to, uint256 amount) external onlyDeployer{
        ERC20(token).transfer(to, amount);
    }

    function destroy() external onlyDeployer {
        selfdestruct(payable(deployer));
    }

    function swapWEthForTargetAmount(uint24 uniswapFee, address tokenReceive, uint256 targetReceiveAmount, uint256 currentRate) internal {
        uint256 maxInAmount = targetReceiveAmount * 10**18 / currentRate;
        IUniswapV3Router.ExactOutputSingleParams memory params = IUniswapV3Router.ExactOutputSingleParams({
            tokenIn: WETH,
            tokenOut: tokenReceive,
            fee: uniswapFee,
            recipient: address(this),
            deadline: block.timestamp + 60,
            amountOut: targetReceiveAmount,
            amountInMaximum: maxInAmount,
            sqrtPriceLimitX96: 0
        });
        IUniswapV3Router(UNISWAP_V3_ROUTER).exactOutputSingle(params);
    }
}