public void Save()
{
TryStartDataOperationAndThenNavigate(async delegate
{
if (StartTime >= EndTime)
{
new PortableMessageDialog("Your end time must be greater than your start time.", "Invalid end time").Show();
return;
}
if (DayOfWeeks.Count == 0)
{
new PortableMessageDialog("You must select at least one day of week. If you want to delete this time, use the delete option in the menu.", "No day of weeks").Show();
return;
}
var updatedAndNewSchedules = new List <DataItemSchedule>();
Guid classId = AddParams != null ? AddParams.Class.Identifier : EditParams.GroupedSchedules.First().Class.Identifier;
// Get the existing schedules
List <ViewItemSchedule> existingSchedules = EditParams != null ? EditParams.GroupedSchedules.ToList() : new List <ViewItemSchedule>();
for (int i = 0; i < DayOfWeeks.Count; i++)
{
DayOfWeek dayOfWeek = DayOfWeeks[i];
// First try to find an existing schedule that already matches this day of week
ViewItemSchedule existingSchedule = existingSchedules.FirstOrDefault(s => s.DayOfWeek == dayOfWeek);
// If we couldn't find one, try picking a schedule that doesn't have any day of week matches
if (existingSchedule == null)
{
existingSchedule = existingSchedules.FirstOrDefault(s => !DayOfWeeks.Contains(s.DayOfWeek));
}
// Remove the schedule we added
if (existingSchedule != null)
{
existingSchedules.Remove(existingSchedule);
}
DataItemSchedule dataItem = new DataItemSchedule()
{
Identifier = existingSchedule != null ? existingSchedule.Identifier : Guid.NewGuid(),
UpperIdentifier = classId,
StartTime = AsUtc(StartTime),
EndTime = AsUtc(EndTime),
Room = Room,
DayOfWeek = dayOfWeek,
ScheduleWeek = ScheduleWeek,
ScheduleType = PowerPlannerSending.Schedule.Type.Normal
};
updatedAndNewSchedules.Add(dataItem);
}
// Deleted schedules are any remaining existing schedules
var deletedScheduleIds = existingSchedules.Select(i => i.Identifier).ToArray();
DataChanges changes = new DataChanges();
foreach (var s in updatedAndNewSchedules)
{
changes.Add(s);
}
foreach (var id in deletedScheduleIds)
{
changes.DeleteItem(id);
}
if (!changes.IsEmpty())
{
await PowerPlannerApp.Current.SaveChanges(changes);
}
}, delegate
{
this.RemoveViewModel();
});
}