LILPEPE

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

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;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    constructor() { _owner = _msgSender(); emit OwnershipTransferred(address(0), _owner); }
    function owner() public view returns (address) { return _owner; }
    modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; }
    function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); }
}

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

interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
}

contract LILPEPE is Context, IERC20, Ownable {
    // ERC20 storage
    string private _name = unicode"Little Pepe";
    string private _symbol = unicode"LILPEPE";
    uint8 private constant _decimals = 12;
    uint256 private constant _tTotal = 100_000_000_000 * 10**_decimals;

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

    // Trading & Uniswap
    bool public tradingOpen = true; // open by default, no enableTrading()
    IUniswapV2Router02 private immutable _router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // Uniswap V2
    address public uniswapV2Pair; // lazily set from factory when available

    constructor() payable {
        _balances[_msgSender()] = _tTotal;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    // ERC20 view functions
    function name() public view returns (string memory) { return _name; }
    function symbol() public view returns (string memory) { return _symbol; }
    function decimals() public pure returns (uint8) { return _decimals; }
    function totalSupply() public pure override returns (uint256) { return _tTotal; }
    function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
    function allowance(address owner_, address spender) public view override returns (uint256) { return _allowances[owner_][spender]; }

    // ERC20 write functions
    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        uint256 current = _allowances[sender][_msgSender()];
        require(current >= amount, "ERC20: insufficient allowance");
        unchecked { _approve(sender, _msgSender(), current - amount); }
        return true;
    }

    // Internal helpers
    function _approve(address owner_, address spender, uint256 amount) private {
        require(owner_ != address(0) && spender != address(0), "ERC20: zero addr");
        _allowances[owner_][spender] = amount;
        emit Approval(owner_, spender, amount);
    }

    function _initPairIfNeeded() private {
        if (uniswapV2Pair == address(0)) {
            address pair = IUniswapV2Factory(_router.factory()).getPair(address(this), _router.WETH());
            if (pair != address(0)) { uniswapV2Pair = pair; }
        }
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0) && to != address(0), "ERC20: zero addr");
        require(amount > 0, "ERC20: zero amount");

        _initPairIfNeeded();

        uint256 fromBal = _balances[from];
        require(fromBal >= amount, "ERC20: balance");
        unchecked { _balances[from] = fromBal - amount; _balances[to] += amount; }
        emit Transfer(from, to, amount);
    }

    receive() external payable {}
}