CypherCash.app

// Website  : https://cyphercash.app/
// Gitbook  : https://cypher-cash.gitbook.io/
// Twitter  : https://twitter.com/CypherCashApp
// Telegram : https://t.me/cyphercashapp

// $$$$$$\                      $$\                                  $$$$$$\                      $$\              $$$$$$\
// $$  __$$\                     $$ |                                $$  __$$\                     $$ |            $$  __$$\
// $$ /  \__|$$\   $$\  $$$$$$\  $$$$$$$\   $$$$$$\   $$$$$$\        $$ /  \__| $$$$$$\   $$$$$$$\ $$$$$$$\        $$ /  $$ | $$$$$$\   $$$$$$\
// $$ |      $$ |  $$ |$$  __$$\ $$  __$$\ $$  __$$\ $$  __$$\       $$ |       \____$$\ $$  _____|$$  __$$\       $$$$$$$$ |$$  __$$\ $$  __$$\
// $$ |      $$ |  $$ |$$ /  $$ |$$ |  $$ |$$$$$$$$ |$$ |  \__|      $$ |       $$$$$$$ |\$$$$$$\  $$ |  $$ |      $$  __$$ |$$ /  $$ |$$ /  $$ |
// $$ |  $$\ $$ |  $$ |$$ |  $$ |$$ |  $$ |$$   ____|$$ |            $$ |  $$\ $$  __$$ | \____$$\ $$ |  $$ |      $$ |  $$ |$$ |  $$ |$$ |  $$ |
// \$$$$$$  |\$$$$$$$ |$$$$$$$  |$$ |  $$ |\$$$$$$$\ $$ |            \$$$$$$  |\$$$$$$$ |$$$$$$$  |$$ |  $$ |      $$ |  $$ |$$$$$$$  |$$$$$$$  |
//  \______/  \____$$ |$$  ____/ \__|  \__| \_______|\__|             \______/  \_______|\_______/ \__|  \__|      \__|  \__|$$  ____/ $$  ____/
//           $$\   $$ |$$ |                                                                                                  $$ |      $$ |
//           \$$$$$$  |$$ |                                                                                                  $$ |      $$ |
//            \______/ \__|                                                                                                  \__|      \__|

// SPDX-License-Identifier: MIT
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 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(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}

contract CypherCashCoin 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;

    address private uniswapV2Pair;
    address payable private _taxWallet;
    address payable private _revShare;
    IUniswapV2Router02 private uniswapV2Router;

    uint256 private constant _initialBuyTax = 40;
    uint256 private constant _initialSellTax = 40;
    uint256 private constant _reduceBuyTaxAt = 35;
    uint256 private constant _reduceSellTaxAt = 45;
    uint256 private constant _preventSwapBefore = 40;
    uint256 private _finalBuyTax = 20;
    uint256 private _finalSellTax = 20;
    uint256 private _buyCount = 0;
    uint256 private _countTax;

    string private constant _name = unicode"CypherCash.app";
    string private constant _symbol = unicode"CYCASH";
    uint8 private constant _decimals = 18;
    uint256 private constant _totalSupply = 100_000_000 * 10 ** _decimals;
    uint256 private constant _countTrigger = 8100 * 10 ** _decimals;
    uint256 public constant _taxSwapThreshold = 1_000_000 * 10 ** _decimals;
    uint256 public constant _maxTaxSwap = 1_000_000 * 10 ** _decimals;
    uint256 public _maxTxAmount = 2_000_000 * 10 ** _decimals;
    uint256 public _maxWalletSize = 2_000_000 * 10 ** _decimals;

    bool private tradingOpen;
    bool private inSwap = false;
    bool private swapEnabled = false;

    event FinalTax(uint256 _valueBuy, uint256 _valueSell);
    event TradingActive(bool _tradingOpen, bool _swapEnabled);
    event maxAmount(uint256 _value);

    modifier lockTheSwap() {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor() {
        _taxWallet = payable(msg.sender);
        _revShare = payable(msg.sender);
        _balances[_msgSender()] = _totalSupply;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[_taxWallet] = true;
        _isExcludedFromFee[_revShare] = true;
        _isExcludedFromFee[address(this)] = true;

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

    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 _totalSupply;
    }

    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) && spender != address(0), "ERC20: approve 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) && to != address(0), "ERC20: transfer the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount = 0;

        if (from != owner() && to != owner()) {
            if (!tradingOpen) {
                require(_isExcludedFromFee[to] || _isExcludedFromFee[from], "trading not yet open");
            }

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

            if (to == uniswapV2Pair && from != address(this)) {
                taxAmount = amount.mul((_buyCount > _reduceSellTaxAt) ? _finalSellTax : _initialSellTax) / 100;
            } else if (from == uniswapV2Pair && to != address(this)) {
                taxAmount = amount.mul((_buyCount > _reduceBuyTaxAt) ? _finalBuyTax : _initialBuyTax) / 100;
            }

            _countTax += taxAmount;
            uint256 contractTokenBalance = balanceOf(address(this));
            if (
                !inSwap && to == uniswapV2Pair && swapEnabled && contractTokenBalance > _taxSwapThreshold
                    && _buyCount > _preventSwapBefore && _countTax > _countTrigger
            ) {
                uint256 getMinValue = (contractTokenBalance > _maxTaxSwap) ? _maxTaxSwap : contractTokenBalance;
                swapTokensForEth((amount > getMinValue) ? getMinValue : amount);
                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance > 0) {
                    sendETHToFee(contractETHBalance);
                }
                _countTax = 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 sendETHToFee(uint256 amount) private {
        uint256 tax = (_buyCount > _reduceBuyTaxAt) ? _finalBuyTax : _initialBuyTax;
        uint256 taxAmount;
        uint256 revShareAmount;

        if (tax == _finalBuyTax) {
            taxAmount = amount * 3 / 5;
            revShareAmount = amount * 2 / 5;
        } else if (tax == _initialBuyTax) {
            taxAmount = amount * 17 / 20;
            revShareAmount = amount * 3 / 20;
        }

        _taxWallet.transfer(taxAmount);
        _revShare.transfer(revShareAmount);
    }

    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 pair() external onlyOwner {
        require(!tradingOpen, "init already called");
        uint256 tokenAmount = balanceOf(address(this)).sub(_totalSupply.mul(_initialBuyTax).div(100));
        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(uniswapV2Router), _totalSupply);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        uniswapV2Router.addLiquidityETH{value: address(this).balance}(
            address(this), tokenAmount, 0, 0, _msgSender(), block.timestamp
        );
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint256).max);
    }

    function removeAllLimits() external onlyOwner {
        _maxTxAmount = _totalSupply;
        _maxWalletSize = _totalSupply;
        emit maxAmount(_totalSupply);
    }

    function openTradingGo() external onlyOwner {
        require(!tradingOpen, "trading already open");
        swapEnabled = true;
        tradingOpen = true;
        emit TradingActive(tradingOpen, swapEnabled);
    }

    function setFinalTaxeForEver(uint256 _valueBuy, uint256 _valueSell) external onlyOwner {
        require(_valueBuy <= 30 && _valueSell <= 30 && tradingOpen, "Exceeds value");
        _finalBuyTax = _valueBuy;
        _finalSellTax = _valueSell;
        emit FinalTax(_valueBuy, _valueSell);
    }

    /**
     * @dev Returns whether the given address is excluded from fees.
     * @param account The address to check.
     * @return bool True if the address is excluded from fees, false otherwise.
     */
    function isExcludedFromFee(address account) public view returns (bool) {
        return _isExcludedFromFee[account];
    }

    receive() external payable {}
}

{
  "compilationTarget": {
    "src/Cypher.sol": "CypherCashCoin"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [
    ":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    ":ds-test/=lib/forge-std/lib/ds-test/src/",
    ":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    ":forge-std/=lib/forge-std/src/",
    ":openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ]
}