// SPDX-License-Identifier: MIT

/** 
AstroTurtle on Base - $ASTRO

Website: https://astroturtle.xyz/
AI App: https://app.astroturtle.xyz/
Telegram: https://t.me/AstroTurtleMeme
Twitter: https://x.com/AstroTurtleMeme
**/

pragma solidity ^0.8.0;

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 approve(address spender, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    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);
}

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

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(), "ASTRO Ownable: caller is not the owner.");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
}

contract AstroTurtle is Context, IERC20, Ownable {
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;

    string private _name = "AstroTurtle";
    string private _symbol = "ASTRO";
    uint256 private maxSupply = 1000000000;
    uint8 private _decimals = 18;
    uint256 private _totalSupply;

    constructor() {
        _mint(_msgSender(), maxSupply * (10 ** uint256(_decimals)));
    }

    // Returns name
    function name() public view returns (string memory) {
        return _name;
    }

    // Returns symbol
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    // Returns decimals
    function decimals() public view returns (uint8) {
        return _decimals;
    }

    // Returns totalSupply
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }
    
    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 approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

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

    function _approve(address owner, address spender, uint256 amount) internal {
        require(owner != address(0), "ASTRO ERC20: approve from the zero address.");
        require(spender != address(0), "ASTRO ERC20: approve to the zero address.");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "ASTRO ERC20: transfer from the zero address.");
        require(recipient != address(0), "ASTRO ERC20: transfer to the zero address.");
        require(_balances[sender] >= amount, "ASTRO ERC20: transfer amount exceeds balance.");

        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - amount);
        return true;
    }

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

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }
}

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