public async Task <IActionResult> CreateTopic(CreateTopicModel model)
{
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
if (!ModelState.IsValid || !_groupsService.IsMember(model.GroupId, userId))
{
return(BadRequest());
}
var topic = _mapper.Map <DetailsTopicModel>(_groupsService.CreateTopic(userId, model.GroupId, model.Name));
await _groupsHubContext.Clients.Group(model.GroupId.ToString()).SendAsync("TopicCreated", model.GroupId, topic.Id, userId);
return(Ok());
}