constructor(private auth: AngularFireAuth, router: Router, route: ActivatedRoute) {
    router.events.pipe(
      filter(e => e instanceof NavigationEnd),
      map(() => {
        let actualRoute = route;
        while (actualRoute.firstChild) {
          actualRoute = actualRoute.firstChild;
        }
        return actualRoute;
      }),
      filter(actualRoute => actualRoute.outlet === 'primary'),
      switchMap(actualRoute => actualRoute.data),
    );
  }