node_helper.js

/* Magic Mirror
 * Node Helper: MMM-GrocyLists
 *
 * By Jordan Welch
 * MIT Licensed.
 */

const NodeHelper = require('node_helper');




module.exports = NodeHelper.create({

  // Override socketNotificationReceived method.

  /* socketNotificationReceived(notification, payload)
     * This method is called when a socket notification arrives.
     *
     * argument notification string - The identifier of the noitication.
     * argument payload mixed - The payload of the notification.
     */
  socketNotificationReceived(notification, payload) {
    if (notification === 'MMM-GrocyLists-NOTIFICATION_TEST') {
      console.log('Working notification system. Notification:', notification, 'payload: ', payload);
      // Send notification
      this.sendNotificationTest(this.anotherFunction()); // Is possible send objects :)
    }
  },

  // Example function send notification test
  sendNotificationTest(payload) {
    this.sendSocketNotification('MMM-GrocyLists-NOTIFICATION_TEST', payload);
  },

  // this you can create extra routes for your module
  extraRoutes() {
    const self = this;
    this.expressApp.get('/MMM-GrocyLists/extra_route', (req, res) => {
      // call another function
      values = self.anotherFunction();
      res.send(values);
    });
  },

  // Test another function
  anotherFunction() {
    return { date: new Date() };
  },
});