public DirectChat AddDirectChat(string userId, string interlocutorId)
{
if (GetDirectChatByUserIds(userId, interlocutorId) == null)
{
var chatToAdd = new DirectChat();
var userChatForUser = new UserChat
{
UserId = userId,
Chat = chatToAdd,
};
var userChatForInterlocutor = new UserChat
{
UserId = interlocutorId,
Chat = chatToAdd,
};
context.AddRange(chatToAdd, userChatForUser, userChatForInterlocutor);
context.SaveChanges();
return(chatToAdd);
}
else
{
return(null);
}
}
public DirectChat CreateDirectChat(string participant1, string participant2)
{
var chat = GetDirectChat(participant1, participant2);
if (chat != null)
{
throw new ChatAlreadyExistException();
}
chat = new DirectChat()
{
ChatMembers = new List <ChatMember>()
};
_chatRepo.Add(chat);
chat.ChatMembers.Add(new ChatMember()
{
Chat = chat,
User = _userRepo.GetOne(participant1)
});
chat.ChatMembers.Add(new ChatMember()
{
Chat = chat,
User = _userRepo.GetOne(participant2)
});
_chatRepo.Save(chat);
return(chat);
}
public DirectChat GetDirectChatByUserIds(string userId, string interlocutorId)
{
DirectChat directChat = context.Chats
.OfType <DirectChat>()
.Where(c => c.UserChats.Any(uc => uc.UserId == userId))
.Where(c => c.UserChats.Any(uc => uc.UserId == interlocutorId))
.Include(c => c.UserChats)
.ThenInclude(uc => uc.User)
.SingleOrDefault();
if (directChat != null)
{
UserChat userChat = GetUserChat(userId, directChat.Id);
directChat.UserChats.Remove(userChat);
}
return(directChat);
}
