// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

contract LunarShiba {
    string private _name;
    string private _symbol;
    uint8 private _decimals;
    address private _owner;
    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    modifier onlyOwner() {
        require(msg.sender == _owner, "Caller is not the owner");
        _;
    }

    constructor() {
        _name = "LunarShiba";
        _symbol = "LSHIBA";
        _decimals = 18;
        _totalSupply = 69000000000 * 10**uint256(_decimals);
        _balances[msg.sender] = _totalSupply;
        _owner = msg.sender;

        emit Transfer(address(0), msg.sender, _totalSupply);
        emit OwnershipTransferred(address(0), _owner);
    }

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

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

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

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

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

    function transfer(address recipient, uint256 amount) public returns (bool) {
        require(recipient != address(0), "Transfer to the zero address");
        require(amount > 0, "Amount must be greater than zero");
        require(amount <= _balances[msg.sender], "Insufficient balance");

        _balances[msg.sender] -= amount;
        _balances[recipient] += amount;

        emit Transfer(msg.sender, recipient, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        require(sender != address(0), "Transfer from the zero address");
        require(recipient != address(0), "Transfer to the zero address");
        require(amount > 0, "Amount must be greater than zero");
        require(amount <= _balances[sender], "Insufficient balance");
        require(amount <= _allowances[sender][msg.sender], "Insufficient allowance");

        _balances[sender] -= amount;
        _balances[recipient] += amount;
        _allowances[sender][msg.sender] -= amount;

        emit Transfer(sender, recipient, amount);
        return true;
    }

    function approve(address spender, uint256 amount) public returns (bool) {
        require(spender != address(0), "Approve to the zero address");

        _allowances[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedAmount) public returns (bool) {
        require(spender != address(0), "Increase allowance to the zero address");

        _allowances[msg.sender][spender] += addedAmount;

        emit Approval(msg.sender, spender, _allowances[msg.sender][spender]);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedAmount) public returns (bool) {
        require(spender != address(0), "Decrease allowance to the zero address");

        if (subtractedAmount > _allowances[msg.sender][spender]) {
            _allowances[msg.sender][spender] = 0;
        } else {
            _allowances[msg.sender][spender] -= subtractedAmount;
        }

        emit Approval(msg.sender, spender, _allowances[msg.sender][spender]);
        return true;
    }

    function burn(uint256 amount) public {
        require(amount > 0, "Amount must be greater than zero");
        require(amount <= _balances[msg.sender], "Insufficient balance");

        _balances[msg.sender] -= amount;
        _totalSupply -= amount;

        emit Transfer(msg.sender, address(0), amount);
    }

    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0), "Transfer ownership to the zero address");

        address previousOwner = _owner;
        _owner = newOwner;

        emit OwnershipTransferred(previousOwner, newOwner);
    }
}

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