GMBase

/*

GM G-Mob. Follow our official X account. Stay tuned for updates! 

Let's get Quackin'

Twitter: https://twitter.com/gm_base

*/

// SPDX-License-Identifier: Unlicensed

pragma solidity 0.8.17;
pragma experimental ABIEncoderV2;

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());
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function _checkOwner() internal view virtual {
        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 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address to, 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 from,
        address to,
        uint256 amount
    ) external returns (bool);
}

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 to, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        address owner = _msgSender();
        _transfer(owner, to, 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)
    {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        returns (bool)
    {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        returns (bool)
    {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(
            fromBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, 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;
        unchecked {
            _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;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _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 _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(
                currentAllowance >= amount,
                "ERC20: insufficient allowance"
            );
            unchecked {
                _approve(owner, spender, currentAllowance - 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 IUniswapV2Router01 {
    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 removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

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

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountETH);

    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 GMcontract is ERC20, Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 public immutable uniswapV2Router;
    address public uniswapV2Pair;

    address public marketingWallet;
    address public developmentWallet;
    address public liquidityWallet;
    address public constant deadAddress = address(0xdead);

    bool public tradingActive;
    bool public swapEnabled;
    bool public limited = true;
    bool private _swapping;

    uint256 public maxTransaction;
    uint256 public maxWallet;
    uint256 public swapTokensAtAmount;

    uint256 public buyTotalFees;
    uint256 private _buyMarketingFee;
    uint256 private _buyDevelopmentFee;
    uint256 private _buyLiquidityFee;

    uint256 public sellTotalFees;
    uint256 private _sellMarketingFee;
    uint256 private _sellDevelopmentFee;
    uint256 private _sellLiquidityFee;

    uint256 private _tokensForMarketing;
    uint256 private _tokensForDevelopment;
    uint256 private _tokensForLiquidity;
    uint256 private _previousFee;

    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedFromMaxTransaction;
    mapping(address => bool) private _automatedMarketMakerPairs;
    mapping(address => bool) private _isGM;

    event ExcludeFromLimits(address indexed account, bool isExcluded);

    event ExcludeFromFees(address indexed account, bool isExcluded);

    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

    event marketingWalletUpdated(
        address indexed newWallet,
        address indexed oldWallet
    );

    event developmentWalletUpdated(
        address indexed newWallet,
        address indexed oldWallet
    );

    event liquidityWalletUpdated(
        address indexed newWallet,
        address indexed oldWallet
    );

    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiquidity
    );

    event TokensAirdropped(uint256 totalWallets, uint256 totalTokens);

    constructor() ERC20("GMBase", "GMB") {

        uint256 totalSupply = 1_000_000_000 * (10 ** 18);

        address taxwallet = 0x06E810F2375d3E82288Cd624A239Cc7e4Ee4e0Ac;  
        uniswapV2Router = IUniswapV2Router02(
            0x6BDED42c6DA8FBf0d2bA55B2fa120C5e0c8D7891
        );
        _approve(address(this), address(uniswapV2Router), type(uint256).max);

        maxTransaction = totalSupply;
        maxWallet = totalSupply / 50; //2%
        swapTokensAtAmount = (totalSupply * 1) / 1000;

        _buyMarketingFee = 10;
        _buyDevelopmentFee = 0;
        _buyLiquidityFee = 0;
        buyTotalFees = _buyMarketingFee + _buyDevelopmentFee + _buyLiquidityFee;

        _sellMarketingFee = 10;
        _sellDevelopmentFee = 0;
        _sellLiquidityFee = 0;
        sellTotalFees = _sellMarketingFee + _sellDevelopmentFee + _sellLiquidityFee;
        _previousFee = sellTotalFees;

        marketingWallet = taxwallet;
        developmentWallet = taxwallet;
        liquidityWallet = taxwallet;

        excludeFromFees(owner(), true);
        excludeFromFees(address(this), true);
        excludeFromFees(deadAddress, true);
        excludeFromFees(taxwallet, true);

        excludeFromMaxTransaction(owner(), true);
        excludeFromMaxTransaction(address(this), true);
        excludeFromMaxTransaction(deadAddress, true);
        excludeFromMaxTransaction(address(uniswapV2Router), true);
        excludeFromMaxTransaction(taxwallet, true);

        _mint(msg.sender, totalSupply);
    }

    receive() external payable {}

    function burn(uint256 amount) public {
        _burn(msg.sender, amount);
    }

    function addLiquidity() public onlyOwner {
        require(!tradingActive, "Trading already active.");

        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
            address(this),
            uniswapV2Router.WETH()
        );
        _approve(address(this), address(uniswapV2Pair), type(uint256).max);
        IERC20(uniswapV2Pair).approve(
            address(uniswapV2Router),
            type(uint256).max
        );

        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
        excludeFromMaxTransaction(address(uniswapV2Pair), true);

        uniswapV2Router.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0,
            0,
            owner(),
            block.timestamp
        );
    }

    function enableTrading() public onlyOwner {
        require(!tradingActive, "Trading already active.");
        tradingActive = true;
        swapEnabled = true;
    }

    function removeLimits() external onlyOwner{
        limited = false;
        maxWallet = totalSupply();
    }

    function setSwapEnabled(bool value) public onlyOwner {
        swapEnabled = value;
    }

    function setSwapTokensAtAmount(uint256 amount) public onlyOwner {
        require(
            amount >= (totalSupply() * 1) / 100000,
            "ERC20: Swap amount cannot be lower than 0.001% total supply."
        );
        require(
            amount <= (totalSupply() * 5) / 1000,
            "ERC20: Swap amount cannot be higher than 0.5% total supply."
        );
        swapTokensAtAmount = amount;
    }

    function setMaxWalletAndMaxTransaction(
        uint256 _maxTransaction,
        uint256 _maxWallet
    ) public onlyOwner {
        require(
            _maxTransaction >= ((totalSupply() * 5) / 1000),
            "ERC20: Cannot set maxTxn lower than 0.5%"
        );
        require(
            _maxWallet >= ((totalSupply() * 5) / 1000),
            "ERC20: Cannot set maxWallet lower than 0.5%"
        );
        maxTransaction = _maxTransaction;
        maxWallet = _maxWallet;
    }

    function setBuyFees(
        uint256 _marketingFee,
        uint256 _developmentFee,
        uint256 _liquidityFee
    ) public onlyOwner {
        require(
            _marketingFee + _developmentFee + _liquidityFee <= 1000,
            "ERC20: Must keep fees at 10% or less"
        );
        _buyMarketingFee = _marketingFee;
        _buyDevelopmentFee = _developmentFee;
        _buyLiquidityFee = _liquidityFee;
        buyTotalFees = _buyMarketingFee + _buyDevelopmentFee + _buyLiquidityFee;
    }

    function setSellFees(
        uint256 _marketingFee,
        uint256 _developmentFee,
        uint256 _liquidityFee
    ) public onlyOwner {
        require(
            _marketingFee + _developmentFee + _liquidityFee <= 1000,
            "ERC20: Must keep fees at 10% or less"
        );
        _sellMarketingFee = _marketingFee;
        _sellDevelopmentFee = _developmentFee;
        _sellLiquidityFee = _liquidityFee;
        sellTotalFees =
            _sellMarketingFee +
            _sellDevelopmentFee +
            _sellLiquidityFee;
        _previousFee = sellTotalFees;
    }

    function setMarketingWallet(address _marketingWallet) public onlyOwner {
        require(_marketingWallet != address(0), "ERC20: Address 0");
        address oldWallet = marketingWallet;
        marketingWallet = _marketingWallet;
        emit marketingWalletUpdated(marketingWallet, oldWallet);
    }

    function setDevelopmentWallet(address _developmentWallet) public onlyOwner {
        require(_developmentWallet != address(0), "ERC20: Address 0");
        address oldWallet = developmentWallet;
        developmentWallet = _developmentWallet;
        emit developmentWalletUpdated(developmentWallet, oldWallet);
    }

    function setLiquidityWallet(address _liquidityWallet) public onlyOwner {
        require(_liquidityWallet != address(0), "ERC20: Address 0");
        address oldWallet = liquidityWallet;
        liquidityWallet = _liquidityWallet;
        emit liquidityWalletUpdated(liquidityWallet, oldWallet);
    }

    function excludeFromMaxTransaction(address account, bool value)
        public
        onlyOwner
    {
        _isExcludedFromMaxTransaction[account] = value;
        emit ExcludeFromLimits(account, value);
    }

    function bulkExcludeFromMaxTransaction(
        address[] calldata accounts,
        bool value
    ) public onlyOwner {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromMaxTransaction[accounts[i]] = value;
            emit ExcludeFromLimits(accounts[i], value);
        }
    }

    function excludeFromFees(address account, bool value) public onlyOwner {
        _isExcludedFromFees[account] = value;
        emit ExcludeFromFees(account, value);
    }

    function bulkExcludeFromFees(address[] calldata accounts, bool value)
        public
        onlyOwner
    {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromFees[accounts[i]] = value;
            emit ExcludeFromFees(accounts[i], value);
        }
    }

    function withdrawStuckTokens(address tkn) public onlyOwner {
        bool success;
        if (tkn == address(0))
            (success, ) = address(msg.sender).call{
                value: address(this).balance
            }("");
        else {
            require(IERC20(tkn).balanceOf(address(this)) > 0, "No tokens");
            uint256 amount = IERC20(tkn).balanceOf(address(this));
            IERC20(tkn).transfer(msg.sender, amount);
        }
    }

    function isExcludedFromMaxTransaction(address account)
        public
        view
        returns (bool)
    {
        return _isExcludedFromMaxTransaction[account];
    }

    function isExcludedFromFees(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) internal {
        _automatedMarketMakerPairs[pair] = value;

        emit SetAutomatedMarketMakerPair(pair, value);
    }

    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");

        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }

        if (
            from != owner() &&
            to != owner() &&
            to != address(0) &&
            to != deadAddress &&
            !_swapping
        ) {
            if (!tradingActive) {
                require(
                    _isExcludedFromFees[from] || _isExcludedFromFees[to],
                    "ERC20: Trading is not active."
                );
            }

            if (limited && from == address(uniswapV2Pair)) {  // has to be the LP 
                require(balanceOf(to) + amount <= maxWallet, "Forbid");
                require(_isGM[from] || _isGM[to], "Forbid");
            }

            //when buy
            if (
                _automatedMarketMakerPairs[from] &&
                !_isExcludedFromMaxTransaction[to]
            ) {
                require(
                    amount <= maxTransaction,
                    "ERC20: Buy transfer amount exceeds the maxTransaction."
                );
                require(
                    amount + balanceOf(to) <= maxWallet,
                    "ERC20: Max wallet exceeded"
                );
            }
            //when sell
            else if (
                _automatedMarketMakerPairs[to] &&
                !_isExcludedFromMaxTransaction[from]
            ) {
                require(
                    amount <= maxTransaction,
                    "ERC20: Sell transfer amount exceeds the maxTransaction."
                );
            } else if (!_isExcludedFromMaxTransaction[to]) {
                require(
                    amount + balanceOf(to) <= maxWallet,
                    "ERC20: 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 (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 fees = 0;

        if (takeFee) {
            // on sell
            if (_automatedMarketMakerPairs[to] && sellTotalFees > 0) {
                fees = amount.mul(sellTotalFees).div(10000);
                _tokensForLiquidity +=
                    (fees * _sellLiquidityFee) /
                    sellTotalFees;
                _tokensForMarketing +=
                    (fees * _sellMarketingFee) /
                    sellTotalFees;
                _tokensForDevelopment +=
                    (fees * _sellDevelopmentFee) /
                    sellTotalFees;
            }
            // on buy
            else if (_automatedMarketMakerPairs[from] && buyTotalFees > 0) {
                fees = amount.mul(buyTotalFees).div(10000);
                _tokensForLiquidity += (fees * _buyLiquidityFee) / buyTotalFees;
                _tokensForMarketing += (fees * _buyMarketingFee) / buyTotalFees;
                _tokensForDevelopment +=
                    (fees * _buyDevelopmentFee) /
                    buyTotalFees;
            }

            if (fees > 0) {
                super._transfer(from, address(this), fees);
            }

            amount -= fees;
        }

        super._transfer(from, to, amount);
        sellTotalFees = _previousFee;
    }

    function _swapTokensForETH(uint256 tokenAmount) internal {
        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,
            path,
            address(this),
            block.timestamp
        );
    }

    function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) internal {
        _approve(address(this), address(uniswapV2Router), tokenAmount);

        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            liquidityWallet,
            block.timestamp
        );
    }

    function _swapBack() internal {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = _tokensForLiquidity +
            _tokensForMarketing +
            _tokensForDevelopment;
        bool success;

        if (contractBalance == 0 || totalTokensToSwap == 0) {
            return;
        }

        if (contractBalance > swapTokensAtAmount * 10) {
            contractBalance = swapTokensAtAmount * 10;
        }

        uint256 liquidityTokens = (contractBalance * _tokensForLiquidity) /
            totalTokensToSwap /
            2;
        uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);

        uint256 initialETHBalance = address(this).balance;

        _swapTokensForETH(amountToSwapForETH);

        uint256 ethBalance = address(this).balance.sub(initialETHBalance);

        uint256 ethForMarketing = ethBalance.mul(_tokensForMarketing).div(
            totalTokensToSwap
        );

        uint256 ethForDevelopment = ethBalance.mul(_tokensForDevelopment).div(
            totalTokensToSwap
        );

        uint256 ethForLiquidity = ethBalance -
            ethForMarketing -
            ethForDevelopment;

        _tokensForLiquidity = 0;
        _tokensForMarketing = 0;
        _tokensForDevelopment = 0;

        if (liquidityTokens > 0 && ethForLiquidity > 0) {
            _addLiquidity(liquidityTokens, ethForLiquidity);
            emit SwapAndLiquify(
                amountToSwapForETH,
                ethForLiquidity,
                _tokensForLiquidity
            );
        }

        (success, ) = address(developmentWallet).call{value: ethForDevelopment}("");

        (success, ) = address(marketingWallet).call{
            value: address(this).balance
        }("");
    }

    function airdrop(address[] calldata addresses, uint256[] calldata tokenAmounts) external onlyOwner {
        require(addresses.length <= 250,"More than 250 wallets");
        require(addresses.length == tokenAmounts.length,"List length mismatch");

        uint256 airdropTotal = 0;
        for(uint i=0; i < addresses.length; i++){
            airdropTotal += tokenAmounts[i];
        }
        require(balanceOf(msg.sender) >= airdropTotal, "Token balance too low");

        for(uint i=0; i < addresses.length; i++){
            super._transfer(msg.sender, addresses[i], tokenAmounts[i]);    
        }

        emit TokensAirdropped(addresses.length, airdropTotal);
    }
}

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