const parseMessageFromString = (message) => {
  try {
    return JSON.parse(message);
  } catch {
    return {};
  }
}

/**
* @typedef {Object} MessageLike
* @property {string} action - every string valid for JS function name.
* @property {Object} data - The user's last name.
*/

/**
 * @param {string|MessageLike} data - Message itself of JSON representation of Message
 */
function Message(data = {}) {
  switch(Object.prototype.toString.call(data)) {
  case "[object String]":
    const parsedMessage = parseMessageFromString(data);

    this.action = parsedMessage?.action;
    this.data = parsedMessage?.data;

    break;
  case "[object Object]":
    this.action = data?.action;
    this.data = data?.data;

    break;
  }
}

Message.prototype.isValid = function() {
  return (
    this?.action !== undefined
  );
}

export { Message }