// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract MyToken {
    string public name;
    string public symbol;
    uint8 public decimals;
    uint256 public totalSupply;
    address public owner;
    bool public paused;

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event Paused();
    event Unpaused();
    event Burn(address indexed burner, uint256 value);

    modifier onlyOwner() {
        require(msg.sender == owner, "Not the contract owner");
        _;
    }

    modifier whenNotPaused() {
        require(!paused, "Contract is paused");
        _;
    }

    modifier whenPaused() {
        require(paused, "Contract is not paused");
        _;
    }

    constructor() {
        name = "wrapped PURR";
        symbol = "wPURR";
        decimals = 18;
        owner = msg.sender;
    }

    function transfer(address _to, uint256 _value) public whenNotPaused returns (bool success) {
        require(balanceOf[msg.sender] >= _value, "Insufficient balance");
        balanceOf[msg.sender] -= _value;
        balanceOf[_to] += _value;
        emit Transfer(msg.sender, _to, _value);
        return true;
    }

    function approve(address _spender, uint256 _value) public whenNotPaused returns (bool success) {
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool success) {
        require(_value <= balanceOf[_from], "Insufficient balance");
        require(_value <= allowance[_from][msg.sender], "Allowance exceeded");
        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;
        allowance[_from][msg.sender] -= _value;
        emit Transfer(_from, _to, _value);
        return true;
    }

    function mint(uint256 _value) public onlyOwner {
        totalSupply += _value;
        balanceOf[owner] += _value;
        emit Transfer(address(0), owner, _value);
    }

    function burn(uint256 _value) public whenNotPaused {
        require(balanceOf[msg.sender] >= _value, "Insufficient balance");
        balanceOf[msg.sender] -= _value;
        totalSupply -= _value;
        emit Burn(msg.sender, _value);
        emit Transfer(msg.sender, address(0), _value);
    }

    function pause() public onlyOwner whenNotPaused {
        paused = true;
        emit Paused();
    }

    function unpause() public onlyOwner whenPaused {
        paused = false;
        emit Unpaused();
    }
}

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