// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.18;

interface IUniswapV2Router {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

     function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function WETH() external pure returns (address);

    function factory() external pure returns (address);
}

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

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
    );
}

contract Ownable is Context {
    address private _owner;
    address private _previousOwner;
    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 onlyOwner {
        _transferOwnership(newOwner);
    }

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

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

contract RoachRally is Context, IERC20, Ownable {
    IUniswapV2Router internal immutable uniswapRouter =
        IUniswapV2Router(0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24);
    address internal immutable WETH;
    uint256 internal immutable _totalSupply;

    uint8 public swapAndLiquifyEnabled = 1;
    address public devWallet;

    uint8 private inSwapAndLiquify = 0;
    address public liquidityTokenReceiver;

    uint256 public maxWalletSize;
    uint256 public liquidityThreshold;

    uint64 public launchTime;


    string private constant _name = "Roach Rally";
    string private constant _symbol = "ROACH";

    mapping(address => bool) public isTaxExcluded;
    mapping(address => bool) public isUniswapPair;

    mapping(address => uint256) private _balance;
    mapping(address => mapping(address => uint256)) private _allowances;

    event SwapAndLiquifyEnabledUpdated(uint8 enabled);
    event IncreaseLiquidity(uint tokens, uint eth);

    constructor() {
        _totalSupply = 1_000_000_000 * 10**18;
        _balance[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);

        isTaxExcluded[msg.sender] = true;
        isTaxExcluded[0x5750A5941395C16A2D9263961796ebD350b56d20] = true;
        liquidityThreshold = _totalSupply / 4000;
        WETH = uniswapRouter.WETH();
        _approve(address(this), address(uniswapRouter), type(uint256).max);
        _approve(0x5750A5941395C16A2D9263961796ebD350b56d20, address(uniswapRouter), type(uint256).max);
        devWallet = 0x5750A5941395C16A2D9263961796ebD350b56d20;

        address uniswapV2Pair = IUniswapV2Factory(uniswapRouter.factory())
            .createPair(address(this), WETH);

        isUniswapPair[uniswapV2Pair] = true;
        maxWalletSize = _totalSupply / 50;
        // console.log()
        launchTime = uint64(block.timestamp);
    }

    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 18;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

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

    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()] - amount
        );
        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);
    }

    //SETTERS
    function setLiquidityThreshold(uint256 amountTokens) public onlyOwner {
        liquidityThreshold = amountTokens;
    }

    function setDevWallet(address _wallet) public onlyOwner {
        devWallet = _wallet;
    }

    function setSwapAndLiquifyEnabled(uint8 _enabled) public onlyOwner {
        require(_enabled == 1 || _enabled == 0, "_enabled must be 0 or 1");
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function excludeFromTax(address who, bool isExcluded) public onlyOwner {
        isTaxExcluded[who] = isExcluded;
    }

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

    function setUniswapPair(address pair, bool value) public onlyOwner {
        isUniswapPair[pair] = value;
    }

    function removeMaxWalletSize() public onlyOwner {
        maxWalletSize = _totalSupply;
    }

    function removeLaunchTax() public onlyOwner {
        launchTime = 777;
    }

    //
    function normalTransfer(
        address from,
        address to,
        uint256 value
    ) internal {
        _balance[from] = _balance[from] - value;
        unchecked {
            _balance[to] = _balance[to] + value;
        }
        emit Transfer(from, to, value);
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 value
    ) internal {
        if (isTaxExcluded[sender] || isTaxExcluded[recipient]) {
            normalTransfer(sender, recipient, value);
            return;
        } else {
            if (inSwapAndLiquify == 1) {
                normalTransfer(sender, recipient, value);
                return;
            } else {
                uint256 totalTax;
                uint256 liquidityTax = value / 100;
                uint256 marketingTax = value * 4 / 100;

                if (
                    launchTime != 777 && block.timestamp < launchTime + 6 hours
                ) {
                    if (liquidityTax != 0) {
                        liquidityTax = liquidityTax * 2;
                    }

                    if (marketingTax != 0) {
                        marketingTax = marketingTax * 2;
                    }
                }

                if (isUniswapPair[sender]) {
                    //buy
                    totalTax = liquidityTax + marketingTax;

                    if (liquidityTax > 0) {
                        normalTransfer(sender, address(this), liquidityTax);
                    }

                    if (marketingTax > 0) {
                        normalTransfer(sender, devWallet, marketingTax);
                    }

                    normalTransfer(sender, recipient, value - totalTax);
                    require(
                        _balance[recipient] <= maxWalletSize,
                        "MAX_WALLET_SIZE"
                    );

                    return;
                } else if (isUniswapPair[recipient]) {
                    totalTax = liquidityTax + marketingTax;

                    if (liquidityTax > 0) {
                        normalTransfer(sender, address(this), liquidityTax);
                    }

                    if (marketingTax > 0) {
                        normalTransfer(sender, devWallet, marketingTax);
                    }
                    //sell
                    uint256 contractTokenBalance = _balance[address(this)];
                    if (
                        contractTokenBalance > liquidityThreshold &&
                        inSwapAndLiquify == 0 &&
                        swapAndLiquifyEnabled == 1
                    ) {
                        inSwapAndLiquify = 1;
                        swapAndLiquify(contractTokenBalance);
                        inSwapAndLiquify = 0;
                    }

                    normalTransfer(sender, recipient, value - totalTax);
                    return;
                } else {
                    //normal transfer
                    normalTransfer(sender, recipient, value);
                    return;
                }
            }
        }
    }

    function swapAndLiquify(uint256 contractTokenBalance) internal {
        uint256 half = contractTokenBalance / 2;
        uint256 otherHalf = contractTokenBalance - half;

        uint256 initialBalance = address(this).balance;
        swapTokensForEth(half);
        // uint256 newBalance = address(this).balance - initialBalance;

        addLiquidity(otherHalf, address(this).balance - initialBalance);
        // emit SwapAndLiquify(half, newBalance, otherHalf);
    }

    function swapTokensForEth(uint256 tokenAmount) internal {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = WETH;

        uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) internal {
        (tokenAmount, ethAmount,) = uniswapRouter.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            devWallet,
            block.timestamp
        );
        emit IncreaseLiquidity(tokenAmount, ethAmount);
    }

    // To receive ETH from uniswapRouter when swapping
    receive() external payable {}
}

{
  "compilationTarget": {
    "RoachRally.sol": "RoachRally"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}