SessionCalendarUpdater.java

public class SessionCalendarUpdater {

    //...

    private SessionCalendarDatabase mSessionCalendarDatabase;
    private SessionCalendarUserPreferences mSessionCalendarUserPreferences;

    public SessionCalendarUpdater(SessionCalendarDatabase sessionCalendarDatabase,
                                  SessionCalendarUserPreferences sessionCalendarUserPreferences) {

        mSessionCalendarDatabase = sessionCalendarDatabase;
        mSessionCalendarUserPreferences = sessionCalendarUserPreferences;
    }

    public void updateCalendar(CalendarUpdateRequest calendarUpdateRequest) {

        boolean isAddEvent = false;

        String action = calendarUpdateRequest.getAction();

        long calendarId = calendarUpdateRequest.getCalendarId();

        if (ACTION_ADD_SESSION_CALENDAR.equals(action)) {
            isAddEvent = true;

        } else if (ACTION_REMOVE_SESSION_CALENDAR.equals(action)) {
            isAddEvent = false;

        } else if (ACTION_UPDATE_ALL_SESSIONS_CALENDAR.equals(action)
                && mSessionCalendarUserPreferences.shouldSyncCalendar()) {

            try {

                mSessionCalendarDatabase.updateAllSessions(calendarId);

            } catch (RemoteException | OperationApplicationException e) {

                LOGE(TAG, "Error adding all sessions to Google Calendar", e);
            }

        } else if (ACTION_CLEAR_ALL_SESSIONS_CALENDAR.equals(action)) {

            try {

                mSessionCalendarDatabase.clearAllSessions(calendarId);

            } catch (RemoteException | OperationApplicationException e) {

                LOGE(TAG, "Error clearing all sessions from Google Calendar", e);
            }

        } else {
            return;
        }


        if (!shouldUpdateCalendarSession(calendarUpdateRequest, mSessionCalendarUserPreferences)) {
            return;
        }

        try {

            CalendarSession calendarSessionToUpdate = calendarUpdateRequest.getCalendarSessionToUpdate();

            if (isAddEvent) {

                mSessionCalendarDatabase.addCalendarSession(calendarId, calendarSessionToUpdate);
            } else {

                mSessionCalendarDatabase.removeCalendarSession(calendarId, calendarSessionToUpdate);
            }

        } catch (RemoteException | OperationApplicationException e) {
            LOGE(TAG, "Error adding session to Google Calendar", e);
        }
    }

    private boolean shouldUpdateCalendarSession(CalendarUpdateRequest calendarUpdateRequest, 
                                                SessionCalendarUserPreferences sessionCalendarUserPreferences) {

        return calendarUpdateRequest.getCalendarSessionToUpdate() == null || !sessionCalendarUserPreferences.shouldSyncCalendar();
    }
}