public async Task AddToGroup(string roomNumber, string name)
{
await Groups.AddToGroupAsync(Context.ConnectionId, roomNumber);
var tempUser = await _chatRoomService.UserList(roomNumber);
if (tempUser.Contains(name))
{
var r = new Random();
name = name + r.Next(10, 100).ToString();
await Clients.Client(Context.ConnectionId).SendAsync("NewName", name);
}
await _chatRoomService.AddUser(roomNumber, name);
await Clients.Group(roomNumber).SendAsync("Send", $"{name} has joined the group.");
var users = await _chatRoomService.UserList(roomNumber);
await Clients.Group(roomNumber).SendAsync(
"UserJoin", users);
}
