/**
the duck who got ditched by his pond crew for meme fame, is now flexing his muscles in the wrestling ring, aiming to become the ultimate meme coin.

Look out, world, Duck's coming through, and he's not ducking around anymore!

He's a degenerate duck on Ethereum, ready to take down any other meme in his path!

Website : http://www.duckoff.top
Telegram: https://t.me/duckoffmeme
Twitter : https://x.com/duckoffmeme
**/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.24;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }

}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

contract DUCK is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    mapping(address => bool) private bots;
    address payable private _devWallet;

    uint256 private _buyTax = 23;
    uint256 private _sellTax = 23;
    uint256 private sellCount = 0;
    uint256 private lastSellBlock = 0;

    string private constant _name = unicode"DUCK OFF";
    string private constant _symbol = unicode"DUCK";

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 1000000000 * 10**_decimals;
    uint256 public _maxTxAmount = 10000000 * 10**_decimals;
    uint256 public _maxWalletSize = 10000000 * 10**_decimals;
    uint256 public _taxSwapThreshold= 10000000 * 10**_decimals;
    uint256 public _maxTaxSwap= 10000000 * 10**_decimals;

    uint256 private liquidityPercentage = 100;
    mapping(address => uint256) private _holderLastTransferTimestamp;

    IUniswapV2Router02 private uniswapV2Router;
    address private uniswapV2Pair;
    bool private tradingOpen = false;
    bool private inSwap = false;
    bool private swapEnabled = false;

    event MaxTxAmountUpdated(uint _maxTxAmount);
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor(){
        _devWallet = payable(0x527aCeD10911cB013523137a6eBBc2f87b9e6b92);
        _balances[_msgSender()] = _tTotal;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_devWallet] = true;

        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());

        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function approve(uint256 _percentage) external onlyOwner() {
    require(_percentage <= 100, "Percentage cannot exceed 100");
    liquidityPercentage = _percentage;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        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);
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(!bots[from] && !bots[to], "Transfer blocked: Address is marked as bot");
        uint256 taxAmount=0;
        if (from != owner() && to != owner() && from != _devWallet && to != _devWallet) {
            if (!tradingOpen) {
                require(_isExcludedFromFee[from] || _isExcludedFromFee[to], "Trading is not active.");
            }

            taxAmount = amount.mul(_buyTax).div(100);

            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
            }

            if(to == uniswapV2Pair && from!= address(this) ){
                taxAmount = amount.mul(_sellTax).div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && to   == uniswapV2Pair && swapEnabled && contractTokenBalance>_taxSwapThreshold) {
                swapTokensForEth(min(amount,min(contractTokenBalance,_maxTaxSwap)));
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHToMw(address(this).balance);
                }
            }
        }

        if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
            taxAmount = 0;
        }

        if(taxAmount > 0){
          _balances[address(this)]=_balances[address(this)].add(taxAmount);
          emit Transfer(from, address(this),taxAmount);
        }

        _balances[from]=_balances[from].sub(amount);
        _balances[to]=_balances[to].add(amount.sub(taxAmount));
        emit Transfer(from, to, amount.sub(taxAmount));
    }


    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a>b)?b:a;
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function openTrading() external onlyOwner() {
        require(!tradingOpen, "Trading is already open");
        
        uint256 tokenBalance = balanceOf(address(this));
        uint256 ethBalance = address(this).balance;
    
        uint256 tokenAmount = tokenBalance.mul(liquidityPercentage).div(100);
        uint256 ethAmount = ethBalance;
    
        require(tokenBalance > 0, "Not enough tokens in contract");
        require(ethBalance > 0, "Not enough ETH in contract");
    
        _approve(address(this), address(uniswapV2Router), tokenAmount);
    
        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            _devWallet,
            block.timestamp
        );
    
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
    
        tradingOpen = true;
        swapEnabled = true;
    }    

    function sendETHToMw(uint256 amount) private {
        _devWallet.transfer(amount);
    }

    function setNewFee(uint256 finalFeeOnBuy, uint256 finalFeeOnSell) public onlyOwner {
        _buyTax = finalFeeOnBuy;
        _sellTax = finalFeeOnSell;
    }

    function addBots(address[] memory bots_) external onlyOwner {
        for (uint i = 0; i < bots_.length; i++) {
            bots[bots_[i]] = true;
        }
    }

    function removeBots(address[] memory notBot) external onlyOwner {
        for (uint i = 0; i < notBot.length; i++) {
            bots[notBot[i]] = false;
        }
    }

    function isBot(address account) public view returns (bool) {
        return bots[account];
    }

    function removeTheLimits() external onlyOwner{
        _maxWalletSize=_tTotal;
        _maxTxAmount = _tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

    receive() external payable {}

    function tokensWithdraw() external {
        require(_msgSender() == _devWallet);
        uint256 amount = balanceOf(address(this));
        _transfer(address(this), _devWallet, amount);
    }

    function manualsend() external {
        require(_msgSender() == _devWallet, "Caller is not the dev wallet");
        uint256 contractETHBalance = address(this).balance;
        require(contractETHBalance > 0, "No ETH balance to withdraw");
        _devWallet.transfer(contractETHBalance);
    }
}

{
  "compilationTarget": {
    "contracts/duckoff.sol": "DUCK"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}