public async Task <IConversation> JoinUserToConversation(IConversation conversation, long userId, string signalRConnectionId)
{
bool exists = await _conversationRepository.ConversationHasActiveUser(conversation.ConversationId, userId);
if (!exists)
{
var activeUser = await _userSummaryRepository.GetById(userId);
if (activeUser != null && !string.IsNullOrWhiteSpace(activeUser.DisplayName))
{
_conversationRepository.JoinUserToConversation(conversation.ConversationId, userId, signalRConnectionId);
conversation.UserJoined(activeUser);
}
}
return(conversation);
}