public async Task <IActionResult> PermanentlyDelete(int id)
{
var topic = _topicService.FindDeletedWithSubTopics(id);
if (topic == null)
{
return(BadRequest());
}
topic.SubTopics.ForEach(t => _topicService.Remove(t));
_topicService.Remove(topic);
await _unitOfWork.SaveChangesAsync();
return(Ok());
}
