public async Task <CreateMessageGroup> Handle(CreateMessageGroup request, CancellationToken cancellationToken)
{
var messageGroup = _mapper.Map <MessageGroup>(request);
bool hasGroup = await _chatManager.HasMessageGroup(messageGroup.SenderId, messageGroup.ReceiverId);
if (hasGroup)
{
return(null);
}
var result = await _chatManager.CreateNewGroup(messageGroup);
var group = _mapper.Map <CreateMessageGroup>(result);
return(group);
}
