public async Task SaveScheduleAsync(SharedScheduleViewModel scheduleVM)
{
await Task.FromResult(0);
//TODO: Figure out a way to update entities in database (including Schedules)
//await PaulRepository.StoreScheduleInDatabase(scheduleVM.Schedule);
if (!scheduleVM.Users.Any())
{
// Schedule no longer in use -> unload it
_loadedSchedules.Remove(scheduleVM.Id);
}
}
/// <summary>
/// Creates a new empty schedule in the database.
/// </summary>
/// <returns>A ViewModel that represents the new schedule</returns>
public async Task <SharedScheduleViewModel> CreateScheduleAsync(string catalogId, ErrorReporter errorReporter)
{
var catalogs = await PaulRepository.GetCourseCataloguesAsync();
var selectedCatalog = catalogs.FirstOrDefault(o => o.InternalID == catalogId);
if (selectedCatalog == null)
{
errorReporter.Throw(
new ArgumentException($"A CourseCatalog with the specified ID '{catalogId}' does not exist"),
UserErrorsViewModel.GenericErrorMessage);
}
// Create a new schedule in DB
var schedule = await PaulRepository.CreateNewScheduleAsync(selectedCatalog);
var vm = new SharedScheduleViewModel(schedule);
_loadedSchedules.Add(schedule.Id, vm);
return(vm);
}
/// <summary>
/// Loads the schedule with the specified ID either from
/// cache or from the database.
/// </summary>
/// <param name="scheduleId">Schedule ID</param>
/// <returns>
/// A ViewModel representing the schedule or null if no
/// schedule with the specified ID exists
/// </returns>
public SharedScheduleViewModel GetOrLoadSchedule(string scheduleId)
{
SharedScheduleViewModel scheduleVm;
if (_loadedSchedules.TryGetValue(scheduleId, out scheduleVm))
{
return(scheduleVm);
}
else
{
var schedule = PaulRepository.GetSchedule(scheduleId);
if (schedule == null)
{
// Schedule with that ID does not exist
return(null);
}
var vm = new SharedScheduleViewModel(schedule);
_loadedSchedules.Add(scheduleId, vm);
return(vm);
}
}