public static void UpdateNotify(BaseSignalRModel model)
        {
            IHubContext context = GlobalHost.ConnectionManager.GetHubContext<NotificationHub>();

            if (model != null)
            {
                foreach (var userNotificationCounts in model.UsersNotificationCounts)
                {
                    string userId = userNotificationCounts.Item1;
                    int notSeendNorificationCounts = userNotificationCounts.Item2;
                    context.Clients.Group(userId).addMessage(notSeendNorificationCounts);
                }
            }
        }
        public BaseSignalRModel SendNotifications(IEnumerable<string> userIds)
        {
            var tuplesList = new List<Tuple<string, int>>();
            var now = DateTime.Now;
            foreach (var userId in userIds)
            {
                int notSeenNotificationsCount = this.tripNotificationRepos
                   .All()
                   .Where(n => n.ForUserId == userId
                           && DbFunctions.TruncateTime(n.AvailableAfter) < now
                           /*&& DbFunctions.TruncateTime(n.DueTo) > now*/
                           && n.IsDeleted == false
                           && n.Seen == false)
                   .Count();

                tuplesList.Add(new Tuple<string, int>(userId, notSeenNotificationsCount));
            }

            var signalRModel = new BaseSignalRModel()
            {
                UsersNotificationCounts = tuplesList
            };

            return signalRModel;
        }