// SPDX-License-Identifier: MIT

pragma solidity 0.8.28;

contract Kanel42_token {
    string public name = "Kanel42";
    string public symbol = "KNL42";
    uint8 public decimals = 6;
    uint256 public totalSupply = 8000000000; // 8000
    uint256 public totalMinted;
    uint256 public mintCost = 0.01 ether;
    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

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

    function transferFrom(address _from, address _to, uint256 _value)
        public
        returns (bool success)
    {
        allowance[_from][msg.sender] -= _value;
        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;
        emit Transfer(_from, _to, _value);
        success = true;
    }

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

    function mint() public payable {
        uint256 minted = msg.value / mintCost * (10 ** decimals);

        balanceOf[msg.sender] += minted;
        totalMinted += minted;

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

    function burn(uint256 _value) public {
        uint256 sendBack = _value / (10 ** decimals) * mintCost * 1 ether;

        balanceOf[msg.sender] -= _value;
        totalMinted -= _value;

        msg.sender.call{ value: sendBack };

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

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(
        address indexed _owner, address indexed _spender, uint256 _value
    );
}