public void SaveUserConnection(string userId, string connectionId)
{
var user = GetUserOrThrow(userId);
if (user.LobbyParticipation == null)
{
throw new InvalidOperationException("User does not participate in any lobby");
}
user.LobbyParticipation.ConnectionIds.Add(connectionId);
_dbContext.SaveChanges();
var chatId = user.LobbyParticipation.LobbyID.ToString();
_chatService.AddConnectionToChat(connectionId, chatId);
if (user.LobbyParticipation.ConnectionIds.Count == 1)
{
_chatService.OnUserJoined(user.UserName, chatId);
}
}
