build method

Implementation

@override
FutureOr<ActivityRepository> build() {
  final repository = ActivityRepository();
  final stream =
      ref.read(firestoreServiceProvider).activityStream().asBroadcastStream();
  // Wait for the first event. This contains all the activities from this
  // month onward.
  return stream.first.then((dynamicActivitiesSnapshot) {
    // After the first event, listen to events. These events are changes to
    // activities.
    _subscription =
        stream.listen((querySnapshot) => _parseQuerySnapShot(querySnapshot));
    // Parse all the activities and add them to the repository.
    final dynamicActivities = dynamicActivitiesSnapshot.docChanges
        .map((doc) => doc.doc.data()!)
        .toList();
    // Check if the local notification should be updated
    _checkIfLocalNotificationShouldBeUpdated(dynamicActivities);
    // Start fetching the static activities from the MyAEGEE API.
    // This is done in the background, so the user can already see the
    // activities from the Firestore database.
    _getStaticActivities().then((staticActivities) {
      update((repository) {
        return updateRepoWithNewActivities(
          repository,
          staticActivities,
        );
      });
    });
    // Return the respository
    return updateRepoWithNewActivities(
      repository,
      dynamicActivities,
    );
  });
}