public Chat GetChatById(int chatId, Include <Chat> include = null)
{
var chat = ChatProvider.All(include).FirstOrDefault(c => c.ChatId == chatId);
if (chat == null)
{
throw new ServiceException {
Code = StatusCode.ChatNotFoundError
};
}
return(chat);
}
public Chat GetOrCreateChatWithUser(User sender, User receiver, Include <Chat> include = null)
{
var chat = ChatProvider.All(include)
.Include(c => c.UserChats)
.ThenInclude(uc => uc.User)
.FirstOrDefault(c => c.UserChats.Select(uc => uc.User.UserId).Contains(receiver.UserId));
if (chat == null)
{
chat = new Chat {
Type = ChatType.Personal
};
ChatProvider.Add(chat);
AddUserToChat(sender, chat);
AddUserToChat(receiver, chat);
}
return(chat);
}
public IQueryable <Chat> GetUserChats(User user)
{
return(ChatProvider.All().Include(c => c.UserChats)
.Where(c => c.UserChats.Any(uc => uc.UserId == user.UserId)));
}