MAGA Meme PAC

/*

Web: https://www.magamemepac.com/
TG: https://t.me/JoinMAGAMEMEPAC
X: https://x.com/TheMagaboyz
TikTok: https://www.tiktok.com/@themagaboyz

*/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.16;

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        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 nonces(address owner) external view returns (uint256);


    event Mint(address indexed sender, uint256 amount0, uint256 amount1);
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);


    function factory() external view returns (address);


    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 IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {

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

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    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 decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

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);
    }
}

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 symbol() external view virtual override returns (string memory) {
        return _symbol;
    }

    function name() external view virtual override returns (string memory) {
        return _name;
    }

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

    function decimals() public view virtual override returns (uint8) {
        return 9;
    }

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

    function allowance(address owner, address spender)
        public
        view
        virtual
        override
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    function transfer(address to, uint256 amount)
        external
        virtual
        override
        returns (bool)
    {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    function approve(address spender, uint256 amount)
        external
        virtual
        override
        returns (bool)
    {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

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

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



    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, 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 _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");

        uint256 fromBalance = _balances[from];
        require(
            fromBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);
    }
}


 contract Magpac is ERC20, Ownable {
    string private _name = "MAGA Meme PAC";
    string private _symbol = "MAGPAC";
    uint8 private _decimals = 9;
    uint256 private _supply = 47000000;
    uint256 public taxForMarketing = 5;
    uint256 public maxTxAmount = 235000 * 10**_decimals;
    uint256 public maxWalletAmount = 235000 * 10**_decimals;
    address public marketingWallet = 0x8689BC58795198F40e2d312312094b4cf967d071;

    IUniswapV2Router02 public immutable uniswapV2Router;
    address public immutable uniswapV2Pair;

    uint256 private _marketingReserves = 0;
    mapping(address => bool) private _isExcludedFromFee;

    uint256 private _numTokensSellToAddToETH = 235000 * 10**_decimals;
    bool inSwapAndLiquify;


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


    constructor() ERC20(_name, _symbol) {
        _mint(msg.sender, (_supply * 10**_decimals));
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());

        uniswapV2Router = _uniswapV2Router;

        _isExcludedFromFee[address(uniswapV2Router)] = true;
        _isExcludedFromFee[msg.sender] = true;
        _isExcludedFromFee[marketingWallet] = true;
    }


    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(balanceOf(from) >= amount, "ERC20: transfer amount exceeds balance");

        if ((from == uniswapV2Pair || to == uniswapV2Pair) && !inSwapAndLiquify) {
            if (from != uniswapV2Pair) {
                if ((_marketingReserves) >= _numTokensSellToAddToETH) {
                    _swapTokensForEth(_numTokensSellToAddToETH);
                    _marketingReserves -= _numTokensSellToAddToETH;
                    bool sent = payable(marketingWallet).send(address(this).balance);
                    require(sent, "Failed to send ETH");
                }
            }

            uint256 transferAmount;
            if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
                transferAmount = amount;
            } 
            else {
                require(amount <= maxTxAmount, "ERC20: transfer amount exceeds the max transaction amount");
                if(from == uniswapV2Pair){
                    require((amount + balanceOf(to)) <= maxWalletAmount, "ERC20: balance amount exceeded max wallet amount limit");
                }

                uint256 marketingShare = ((amount * taxForMarketing) / 100);
                transferAmount = amount - marketingShare;
                _marketingReserves += marketingShare;

                super._transfer(from, address(this), marketingShare);
            }
            super._transfer(from, to, transferAmount);
        } 
        else {
            super._transfer(from, to, amount);
        }
    }


    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 + 300)
        );
    }



    function changeMarketingWallet(address newWallet)
        public
        onlyOwner
        returns (bool)
    {
        marketingWallet = newWallet;
        return true;
    }

    function changeTax(uint256 _taxForMarketing)
        public
        onlyOwner
        returns (bool)
    {
        require(_taxForMarketing <= 100, "ERC20: total tax must not be greater than 100");
        taxForMarketing = _taxForMarketing;

        return true;
    }

    function changeMaxTxAmount(uint256 _maxTxAmount)
        public
        onlyOwner
        returns (bool)
    {
        maxTxAmount = _maxTxAmount;

        return true;
    }

    function changeMaxWalletAmount(uint256 _maxWalletAmount)
        public
        onlyOwner
        returns (bool)
    {
        maxWalletAmount = _maxWalletAmount;

        return true;
    }

    receive() external payable {}
}

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