public async Task SendMessage(CreateMessageDto createMessageDto)
{
var userName = Context.User.GetUserName();
if (userName == createMessageDto.RecipientUserName.ToLower())
{
throw new Exception("You can't send message to yourself");
}
var recipient = await _unitOfWork.UserRepository.GetUserByNameAsync(createMessageDto.RecipientUserName);
var sender = await _unitOfWork.UserRepository.GetUserByNameAsync(userName);
if (recipient == null)
{
throw new Exception("User not found");
}
var message = new Message
{
SenderId = sender.Id,
SenderUserName = sender.UserName,
RecipientId = recipient.Id,
RecipientUserName = recipient.UserName,
Content = createMessageDto.Content
};
var groupName = GetGroupName(message.SenderUserName, message.RecipientUserName);
var group = await _unitOfWork.MessageRepository.GetMessageGroup(groupName);
if (group.Connections.Any(x => x.userName == recipient.UserName))
{
message.DateRead = DateTime.UtcNow;
}
else
{
var connectionIds = await _presenceTracker.GetConnectionIds(recipient.UserName);
if (connectionIds != null)
{
await _presenceHub.Clients.Clients(connectionIds).SendAsync("NewMessageReceived", new
{
userName = sender.UserName,
nickName = sender.NickName
});
}
}
_unitOfWork.MessageRepository.AddMessage(message);
if (await _unitOfWork.SaveChanges())
{
await Clients.Group(groupName).SendAsync("NewMessage", _mapper.Map <MessageDto>(message));
}
}