public async Task<IHttpActionResult> CalendarMembers(CalendarMembersDTO model)
{
if (!ModelState.IsValid) return BadRequest();
ValidationResult result = await _memberService.UpdateCalendarMembers(model);
if (result.Success)
return Ok();
return BadRequest(result.Error);
}
public async Task<ValidationResult> UpdateCalendarMembers(CalendarMembersDTO model)
{
try
{
//First load the member ids
List<int> memberIds = await _calendarMemberRepo.Get(x => x.CalendarId == model.CalendarId)
.Select(x => x.UserId)
.ToListAsync();
//Split the Ids string and create list of integers
List<int> ids = model.MemberIds.Split(',').Select(int.Parse).ToList();
//Calculate the members set for removal
List<int> removedMemberIds = memberIds.Except(ids).ToList();
foreach (var id in removedMemberIds)
{
//Get all of the members events for the calendar
var events = await _calendarRepo.Get(x => x.Id == model.CalendarId)
.SelectMany(x => x.Events)
.SelectMany(x => x.Members)
.Where(m => m.UserId == id)
.ToListAsync();
//Remove the member from those events
foreach (var e in events)
{
_eventMemberRepo.Delete(e);
}
//Unlink the member(s) from the calendars
CalendarMember calMem =
await _calendarMemberRepo.Get(x => x.CalendarId == model.CalendarId && x.UserId == id)
.FirstOrDefaultAsync();
_calendarMemberRepo.Delete(calMem);
}
//Check we have at least the owner member
if (removedMemberIds.Count >= memberIds.Count) return AddError("Unable to update calendar members");
await SaveChangesAsync();
Result.Success = true;
return Result;
}
catch (Exception ex)
{
return AddError(ex.Message);
}
}