user-model-post-save.js

// This post-save hook middleware allows us to publish create and update events
// to which the mediator service can subscribe.
UserSchema.post('save', function (doc) {

    // Determine the current event
    var eventName = (this.wasNew) ? "user:create" : "user:update";
    if (doc.deleted) {eventName = 'user:delete'}

    // Create an authenticate a Firebase ref and update accordingly
    var firebaseRef, userRef;
    if ((process.env.FIREBASE_URL != null) && (process.env.FIREBASE_SECRET != null)) {
      firebaseRef = new Firebase(process.env.FIREBASE_URL);
      firebaseRef.authWithCustomToken(process.env.FIREBASE_SECRET, function(error, authData) {
        var userRef;
        if (error) {
          console.log("Firebase login Failed!", error);
        } else {
          userRef = firebaseRef.child("users").child(doc.id);
          if (eventName === 'user:delete') {
            userRef.remove();
          } else {
            userRef.set(doc.toCompleteJSON());
          }
        }
      });
    }

    JobService.publishEvent(
      eventName,
      {user_id: doc.id, hasChanged: this.hasChanged},
      function (err) {
        if(err) console.log(err);
    });
});