public JsonNetResult GetNextBall()
        {
            var currentBall = Db.GameBalls.Where(x => x.Game.InProgress).OrderByDescending(x=>x.Id).FirstOrDefault();

            var isCurrentGame = Db.Games.Where(x => x.InProgress).Any();

            try
            {
                // check in attendance
                if (isCurrentGame)
                {
                    var currentGame = Db.Games.Where(a => a.InProgress).FirstOrDefault();

                    var pastattendances = Db.Attandances.Where(a => a.User.Kerb == User.Identity.Name).ToList();
                    foreach (var a in pastattendances) Db.Attandances.Remove(a);

                    var user = Db.Users.Where(a => a.Kerb == User.Identity.Name).FirstOrDefault();
                    var attendance = new Attendance() { User = user, Game = currentGame, InGame = true };

                    Db.Attandances.Add(attendance);
                    Db.SaveChanges();
                }
            }
            catch(Exception){}

            if (currentBall == null)
            {
                return isCurrentGame
                    ? new JsonNetResult(new {ball = new GameBall {Number = -1}, gameover = false})
                    : new JsonNetResult(new { ball = new GameBall { Number = -1 }, gameover = true });
            }

            return new JsonNetResult(new { ball = new GameBall(){Id = currentBall.Id, Letter = currentBall.Letter, Number = currentBall.Number, Picked = currentBall.Picked}, gameover = false });
        }
        public JsonNetResult HasActiveGame()
        {
            var pastattendances = Db.Attandances.Where(a => a.User.Kerb == User.Identity.Name).ToList();
            foreach (var a in pastattendances) Db.Attandances.Remove(a);

            // check in attendance
            var user = Db.Users.Where(a => a.Kerb == User.Identity.Name).FirstOrDefault();
            var attendance = new Attendance() { User = user, Game = null, InGame = false };
            Db.Attandances.Add(attendance);
            Db.SaveChanges();

            return new JsonNetResult(Db.Games.Where(x=>x.InProgress).Any());
        }