public async Task <IEnumerable <Participant> > CreateRangeAsync(ParticipantRange range, ApplicationUser user, Action <string, string> AddErrorMessage)
{
if (range.Users == null || range.Users.Count == 0)
{
return(null);
}
if (user == null)
{
AddErrorMessage?.Invoke("General", "Only Logged-in user can perform this operation");
return(null);
}
Chatroom chatroom = await _chatroomService.GetAsync(range.ChatroomID);
if (user.Id != chatroom.OwnerID)
{
AddErrorMessage?.Invoke("General", "Only Owner of a Chatroom can add participants!");
return(null);
}
List <ParticipantEntity> participants = new List <ParticipantEntity>();
foreach (UserShort u in range.Users)
{
ParticipantEntity temp = new ParticipantEntity
{
ChatroomID = range.ChatroomID,
UserID = u.UserID,
User = new ApplicationUser {
Id = u.UserID, UserName = u.UserName
},
};
_context.Entry(temp.User).State = EntityState.Unchanged;
participants.Add(temp);
}
IEnumerable <ParticipantEntity> created = await _repository.CreateRangeAsync(participants);
if (created != null && created.Any())
{
await _context.SaveChangesAsync();
}
IEnumerable <Participant> result = _mappingService.EntitiesToDtos(created);
foreach (Participant p in result)
{
p.Deletable = (p.UserID != user.Id);
}
return(result);
}