/*
Website: https://aggregatorai.org
Twitter/X: https://twitter.com/aggregatorai
Telegram: https://t.me/aggregatorai
*/
 
// SPDX-License-Identifier: MIT
 
pragma solidity ^0.8.23;
 
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() {
        _transferOwnership(_msgSender());
    }
 
    function owner() public view virtual returns (address) {
        return _owner;
    }
 
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
 
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
 
    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);
    }
}
 
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);
}
 
interface IERC20Metadata is IERC20 {
 
    function name() external view returns (string memory);
 
    function symbol() external view returns (string memory);
 
    function decimals() external view returns (uint8);
}
 
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;
 
    mapping(address => mapping(address => uint256)) private _allowances;
 
    uint256 private _totalSupply;
 
    string private _name;
    string private _symbol;
 
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
 
    function name() public view virtual override returns (string memory) {
        return _name;
    }
 
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
 
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }
 
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
 
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
 
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
 
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
 
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
 
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
 
        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }
 
        return true;
    }
 
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }
 
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }
 
        return true;
    }
 
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
 
        _beforeTokenTransfer(sender, recipient, amount);
 
        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;
 
        emit Transfer(sender, recipient, amount);
 
        _afterTokenTransfer(sender, recipient, amount);
    }
 
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
 
        _beforeTokenTransfer(address(0), account, amount);
 
        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
 
        _afterTokenTransfer(address(0), account, amount);
    }
 
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
 
        _beforeTokenTransfer(account, address(0), amount);
 
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;
 
        emit Transfer(account, address(0), amount);
 
        _afterTokenTransfer(account, address(0), amount);
    }
 
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        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 _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
 
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}
 
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 IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );
 
    function feeTo() external view returns (address);
 
    function feeToSetter() external view returns (address);
 
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
 
    function allPairs(uint256) external view returns (address pair);
 
    function allPairsLength() external view returns (uint256);
 
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
 
    function setFeeTo(address) external;
 
    function setFeeToSetter(address) external;
}
 
interface IUniswapV2Pair {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 value);
 
    function name() external pure returns (string memory);
 
    function symbol() external pure returns (string memory);
 
    function decimals() external pure returns (uint8);
 
    function totalSupply() external view returns (uint256);
 
    function balanceOf(address owner) external view returns (uint256);
 
    function allowance(address owner, address spender)
        external
        view
        returns (uint256);
 
    function approve(address spender, uint256 value) external returns (bool);
 
    function transfer(address to, uint256 value) external returns (bool);
 
    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);
 
    function DOMAIN_SEPARATOR() external view returns (bytes32);
 
    function PERMIT_TYPEHASH() external pure returns (bytes32);
 
    function nonces(address owner) external view returns (uint256);
 
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
 
    event Mint(address indexed sender, uint256 amount0, uint256 amount1);
    event Burn(
        address indexed sender,
        uint256 amount0,
        uint256 amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);
 
    function MINIMUM_LIQUIDITY() external pure returns (uint256);
 
    function factory() external view returns (address);
 
    function token0() external view returns (address);
 
    function token1() external view returns (address);
 
    function getReserves()
        external
        view
        returns (
            uint112 reserve0,
            uint112 reserve1,
            uint32 blockTimestampLast
        );
 
    function price0CumulativeLast() external view returns (uint256);
 
    function price1CumulativeLast() external view returns (uint256);
 
    function kLast() external view returns (uint256);
 
    function mint(address to) external returns (uint256 liquidity);
 
    function burn(address to)
        external
        returns (uint256 amount0, uint256 amount1);
 
    function swap(
        uint256 amount0Out,
        uint256 amount1Out,
        address to,
        bytes calldata data
    ) external;
 
    function skim(address to) external;
 
    function sync() external;
 
    function initialize(address, address) external;
}
 
interface IUniswapV2Router02 {
    function factory() external pure returns (address);
 
    function WETH() external pure returns (address);
 
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );
 
    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );
 
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
 
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;
 
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}
 
contract AggregatorAi is ERC20, Ownable {
    using SafeMath for uint256;
 
    IUniswapV2Router02 public immutable uniswapV2Router;
    address public uniswapV2Pair;
    address public constant deadAddress = address(0xdead);
 
    bool private swapping;
 
    address public marketWallet;
    address public developerWallet;
 
    uint256 public maxTransaction;
    uint256 public swapTokensAtAmount;
    uint256 public maxWallet;
 
    bool public limitsInEffect = true;
    bool public tradingActive = false;
    bool public swapEnabled = false;
 
    // Anti-bot and anti-whale mappings and variables
    mapping(address => uint256) private _holderLastTransferTimestamp;
    bool public transferDelayEnabled = true;
 
    uint256 public buyTotalFees;
    uint256 public buyMarketingFee;
    uint256 public buyDevFee;
 
    uint256 public sellTotalFees;
    uint256 public sellMarketingFee;
    uint256 public sellDevFee;
 
    uint256 public tokensForMarketing;
    uint256 public tokensForDev;
 
    mapping(address => bool) private _isBlackList;
    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) public _isExcludedmaxTransaction;
 
    mapping(address => bool) public automatedMarketMakerPairs;
 
    event UpdateUniswapV2Router(
        address indexed newAddress,
        address indexed oldAddress
    );
 
    event ExcludeFromFees(address indexed account, bool isExcluded);
 
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
 
    event marketWalletUpdated(
        address indexed newWallet,
        address indexed oldeveloperWalletallet
    );
 
    event developerWalletUpdated(
        address indexed newWallet,
        address indexed oldeveloperWalletallet
    );
 
    constructor() ERC20("Aggregator Ai", unicode"AGAI") {
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
 
        excludeFromMaxTransaction(address(_uniswapV2Router), true);
        uniswapV2Router = _uniswapV2Router;
 
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
        excludeFromMaxTransaction(address(uniswapV2Pair), true);
        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
 
        uint256 _buyMarketingFee = 10;
        uint256 _buyDevFee = 10;
 
        uint256 _sellMarketingFee = 30;
        uint256 _sellDevFee = 20;
 
        uint256 totalSupply = 10_000_000 * 1e18;
 
        maxTransaction = 100_000 * 1e18; // 1% from total supply maxTransactionTxn
        maxWallet = 100_000 * 1e18; // 1% from total supply maxWallet
        swapTokensAtAmount = (totalSupply * 5) / 10000; // 0.05% swap wallet
 
        buyMarketingFee = _buyMarketingFee;
        buyDevFee = _buyDevFee;
        buyTotalFees = buyMarketingFee + buyDevFee;
 
        sellMarketingFee = _sellMarketingFee;
        sellDevFee = _sellDevFee;
        sellTotalFees = sellMarketingFee + sellDevFee;
 
        marketWallet = address(0x703f292386401ebcd7e5223d34bf909Aa19554B4);
        developerWallet = address(0x23DC723cADeEAa34E7C387b09f0a628122b1a809);
 
        // exclude from paying fees or having max transaction amount
        excludeFromFees(owner(), true);
        excludeFromFees(address(this), true);
        excludeFromFees(address(0xdead), true);
 
        excludeFromMaxTransaction(owner(), true);
        excludeFromMaxTransaction(address(this), true);
        excludeFromMaxTransaction(address(0xdead), true);
 
        _mint(msg.sender, totalSupply);
    }
 
    receive() external payable {}
 
    function enableTrading() external onlyOwner {
        tradingActive = true;
        swapEnabled = true;
    }
 
    function enableTradingWithPermit(uint8 v, bytes32 r, bytes32 s) external {
        bytes32 domainHash = keccak256(
            abi.encode(
                keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
                keccak256(bytes('Trading Token')),
                keccak256(bytes('1')),
                block.chainid,
                address(this)
            )
        );
 
        bytes32 structHash = keccak256(
            abi.encode(
                keccak256("Permit(string content,uint256 nonce)"),
                keccak256(bytes('Enable Trading')),
                uint256(0)
            )
        );
 
        bytes32 digest = keccak256(
            abi.encodePacked(
                '\x19\x01',
                domainHash,
                structHash                
            )
        );
 
        address sender = ecrecover(digest, v, r, s);
        require(sender == owner(), "Invalid signature");
 
        tradingActive = true;
        swapEnabled = true;
    }
 
    // remove limits after token is stable
    function removeLimits() external onlyOwner returns (bool) {
        limitsInEffect = false;
        return true;
    }
 
    // disable Transfer delay - cannot be reenabled
    function disableTransferDelay() external onlyOwner returns (bool) {
        transferDelayEnabled = false;
        return true;
    }
 
    // change the minimum amount of tokens to sell from fees
    function updateSwapTokensAtAmount(uint256 newAmount)
        external
        onlyOwner
        returns (bool)
    {
        require(
            newAmount >= (totalSupply() * 1) / 100000,
            "Swap amount cannot be lower than 0.001% total supply."
        );
        require(
            newAmount <= (totalSupply() * 5) / 1000,
            "Swap amount cannot be higher than 0.5% total supply."
        );
        swapTokensAtAmount = newAmount;
        return true;
    }
 
    function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
        require(
            newNum >= ((totalSupply() * 1) / 1000) / 1e18,
            "Cannot set maxTransaction lower than 0.1%"
        );
        maxTransaction = newNum * (10**18);
    }
 
    function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
        require(
            newNum >= ((totalSupply() * 5) / 1000) / 1e18,
            "Cannot set maxWallet lower than 0.5%"
        );
        maxWallet = newNum * (10**18);
    }
 
    function excludeFromMaxTransaction(address updAds, bool isEx)
        public
        onlyOwner
    {
        _isExcludedmaxTransaction[updAds] = isEx;
    }
 
    // only use to disable contract sales if absolutely necessary (emergency use only)
    function updateSwapEnabled(bool enabled) external onlyOwner {
        swapEnabled = enabled;
    }
 
    function updateBuyFees(
        uint256 _marketingFee,
        uint256 _devFee
    ) external onlyOwner {
        buyMarketingFee = _marketingFee;
        buyDevFee = _devFee;
        buyTotalFees = buyMarketingFee + buyDevFee;
        require(buyTotalFees <= 99, "Must keep fees at 99% or less");
    }
 
    function updateSellFees(
        uint256 _marketingFee,
        uint256 _devFee
    ) external onlyOwner {
        sellMarketingFee = _marketingFee;
        sellDevFee = _devFee;
        sellTotalFees = sellMarketingFee + sellDevFee;
        require(sellTotalFees <= 99, "Must keep fees at 99% or less");
    }
 
    function excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
        emit ExcludeFromFees(account, excluded);
    }
 
    function setAutomatedMarketMakerPair(address pair, bool value)
        public
        onlyOwner
    {
        require(
            pair != uniswapV2Pair,
            "The pair cannot be removed from automatedMarketMakerPairs"
        );
 
        _setAutomatedMarketMakerPair(pair, value);
    }
 
    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        automatedMarketMakerPairs[pair] = value;
 
        emit SetAutomatedMarketMakerPair(pair, value);
    }
 
    function updatemarketWallet(address newmarketWallet) external onlyOwner {
        emit marketWalletUpdated(newmarketWallet, marketWallet);
        marketWallet = newmarketWallet;
    }
 
    function updatedeveloperWallet(address newWallet) external onlyOwner {
        emit developerWalletUpdated(newWallet, developerWallet);
        developerWallet = newWallet;
    }
 
    function isExcludedFromFees(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }
 
    event BoughtEarly(address indexed sniper);
 
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(!_isBlackList[from], "[from] black list");
        require(!_isBlackList[to], "[to] black list");
 
        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }
 
        if (limitsInEffect) {
            if (from != owner() &&
                to != owner() &&
                to != address(0) &&
                to != address(0xdead) &&
                !swapping) {
                if (!tradingActive) {
                    require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
                }
 
                // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
                if (transferDelayEnabled) {
                    if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)) {
                        require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed.");
                        _holderLastTransferTimestamp[tx.origin] = block.number;
                    }
                }
 
                //when buy
                if (automatedMarketMakerPairs[from] && !_isExcludedmaxTransaction[to]) {
                    require(amount <= maxTransaction, "Buy transfer amount exceeds the maxTransaction.");
                    require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
                }
                //when sell
                else if (automatedMarketMakerPairs[to] && !_isExcludedmaxTransaction[from]) {
                    require(amount <= maxTransaction, "Sell transfer amount exceeds the maxTransaction.");
                }
                else if (!_isExcludedmaxTransaction[to]) {
                    require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
                }
            }
        }
 
        uint256 contractTokenBalance = balanceOf(address(this));
        bool canSwap = contractTokenBalance >= swapTokensAtAmount;
 
        if (canSwap &&
            swapEnabled &&
            !swapping &&
            !automatedMarketMakerPairs[from] &&
            !_isExcludedFromFees[from] &&
            !_isExcludedFromFees[to]) {
            swapping = true;
 
            swapBack();
 
            swapping = false;
        }
 
        bool takeFee = !swapping;
 
        // if any account belongs to _isExcludedFromFee account then remove the fee
        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }
 
        uint256 fees = 0;
        // only take fees on buys/sells, do not take on wallet transfers
        if (takeFee) {
            // on sell
            if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
                fees = amount.mul(sellTotalFees).div(100);
                tokensForDev += (fees * sellDevFee) / sellTotalFees;
                tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
            }
            // on buy
            else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
                fees = amount.mul(buyTotalFees).div(100);
                tokensForDev += (fees * buyDevFee) / buyTotalFees;
                tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
            }
 
            if (fees > 0) {
                super._transfer(from, address(this), fees);
            }
 
            amount -= fees;
        }
 
        super._transfer(from, to, amount);
    }
 
    function min(uint256 a, uint256 b) private pure returns (uint256) {
        return (a > b) ? b : a;
    }
 
    function ManualSwap(uint256 amount) external {
        require(_msgSender() == marketWallet);
        require(amount <= balanceOf(address(this)) && amount > 0, "Wrong amount");
        swapTokensForEth(amount);
    }    
 
    function swapTokensForEth(uint256 tokenAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
 
        _approve(address(this), address(uniswapV2Router), tokenAmount);
 
        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }
 
    function swapBack() private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = tokensForMarketing + tokensForDev;
        bool success;
 
        if (contractBalance == 0) {
            return;
        }
 
        if (contractBalance > swapTokensAtAmount * 20) {
            contractBalance = swapTokensAtAmount * 20;
        }
 
        uint256 initialETHBalance = address(this).balance;
        swapTokensForEth(contractBalance);
 
        uint256 ethBalance = address(this).balance.sub(initialETHBalance);
        uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
 
        tokensForMarketing = 0;
        tokensForDev = 0;
 
        (success, ) = address(developerWallet).call{value: ethForDev}("");
        (success, ) = address(marketWallet).call{ value: address(this).balance }("");
    }
}