// SPDX-License-Identifier: MIT
// https://t.me/cukurcoineth
pragma solidity 0.8.19;

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 transferOwnership(address newOwner) public virtual onlyOwner() {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }
      
       function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
    
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

}

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 CUKUR is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) public _isExcludedFromFee;
    address payable private MarketingWallet;

    uint256 private swapTaxes = 40;
    uint8 private constant _decimals = 8;
    uint256 private constant _tTotal = 1e12 * 10**_decimals;
    string private constant _name = "CUKUR";
    string private constant _symbol = "$CUKUR";
    
    address public constant deadWallet = 0x000000000000000000000000000000000000dEaD;

    uint256 private _maxTxAmount = 2e10 * 10**_decimals;
    uint256 private _maxWalletSize = 2e10 * 10**_decimals;
    uint256 public _taxSwap = 5e9 * 10**_decimals;

    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapV2Pair;
    
    bool public tradingOpen = false;
    bool private inSwap = false;
    bool public swapEnabled = false;

    event MaxTxAmountUpdated(uint _maxTxAmount);
   
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor (address addy) {
           if (block.chainid == 56){
     uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
     }
      else if(block.chainid == 1 || block.chainid == 4 || block.chainid == 3 || block.chainid == 5){
          uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
      }
      else if(block.chainid == 42161){
           uniswapV2Router = IUniswapV2Router02(0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506);
      }
     else  if (block.chainid == 97){
     uniswapV2Router = IUniswapV2Router02(0xD99D1c33F9fC3444f8101754aBC46c52416550D1);
     }
    uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        
        MarketingWallet = payable(addy);
        _balances[_msgSender()] = _tTotal;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[MarketingWallet] = true;
        _isExcludedFromFee[deadWallet] = true;
       
        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(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");
        
         uint256 taxAmount;
         uint256 feeswap;
         
         if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
            require(tradingOpen,"wait for trading to open");

            taxAmount = amount.mul(swapTaxes).div(100);
            feeswap = taxAmount;

            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
                
            }

            if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
                  feeswap = 0;
         }
            
            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && from != uniswapV2Pair && swapEnabled && contractTokenBalance >= _taxSwap) {
                swapTokensForEth(_taxSwap);
                
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
            }
        }

        _balances[from] = _balances[from].sub(amount);
        _balances[to] = _balances[to].add(amount.sub(feeswap));
        emit Transfer(from, to, amount.sub(feeswap));
        
        if(feeswap > 0){
          _balances[address(this)] = _balances[address(this)].add(feeswap);
          emit Transfer(from, address(this),feeswap);
        }
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        require(tokenAmount > 0, "amount most be greeter than 0");
        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 sendETHToFee(uint256 amount) private {
        MarketingWallet.transfer(amount);
    }

   function excludeFromFee(address account) external onlyOwner {
       _isExcludedFromFee[account] = true;
   }
   
    function includeFromFee(address account) external onlyOwner {
        _isExcludedFromFee[account] = false;
    }
   
    function SetFees(uint256 _feeAmount) external onlyOwner {
       require(_feeAmount <= 40, "fees will not exceed 40%");
        swapTaxes = _feeAmount;
    }
    
    function SetFeesReciever(address payable _newWallet) external onlyOwner {
       require(_newWallet != address(this), "CA will not be the Fee Reciever");
       require(_newWallet != address(0), "0 addy will not be the fee reciever");
       MarketingWallet = _newWallet;
      _isExcludedFromFee[_newWallet] = true;
    }
    
    function setSwapThreshould(uint256 tokenAmount) external onlyOwner {
        require(tokenAmount <= 1e10, "amount will not exceed 1% of the supply");
        _taxSwap = tokenAmount;
    }
    
    function removeTxLimits() external onlyOwner{
        _maxTxAmount = _tTotal;
        _maxWalletSize = _tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

   function setSwapBackSetting(bool state) external onlyOwner {
        swapEnabled = state;
    }
   
    function openTrading() external onlyOwner() {
        require(!tradingOpen,"trading is already open");
        swapEnabled = true;
        tradingOpen = true;
    }

    receive() external payable {}

    function rescueERC20(address token) external onlyOwner {
        require(token != address(this), "cannot claim native token");
        uint256 amount = IERC20(token).balanceOf(address(this));
        IERC20(token).transfer(MarketingWallet, amount);
    }
 
 function rescueETH() external {
        uint256 contractETHBalance = address(this).balance;
        if (contractETHBalance > 0) {
        payable(address(MarketingWallet)).transfer(contractETHBalance);
    }
  }
}