public Jackpot GetJackpotSinceLastWin(WeeklyPlay wp)
        {
            var jackpot = new Jackpot();
            WeeklyPlay lastWin = GetLastWeeklyPlayWin(wp);
            if (lastWin == null)
            {
                var lastStartWeek = GetLastStartWeek(wp.Play_Date);
                jackpot.JackpotBalance = (Decimal)context.Tickets.Where(i => i.Purchase_Date < lastStartWeek).Sum(i => i.TicketAmount.Ticket_Amount) - GetPreviousNonWinningPayouts(wp);
            }
            else
            {
                DateTime lastStartWeek = GetLastStartWeek(lastWin.Play_Date);
                DateTime currentPlayWeek = GetLastStartWeek(wp.Play_Date);
                var de = (Decimal)context.Tickets.Where(i => i.Purchase_Date > lastStartWeek && i.Purchase_Date < currentPlayWeek).Sum(i => i.TicketAmount.Ticket_Amount);
                jackpot.JackpotBalance = de - GetPreviousNonWinningPayouts(wp);
            }

            return jackpot;
        }
 public Jackpot GetJackpotBalance()
 {
     var jackpot = new Jackpot();
     if (context.Tickets.Count() > 0)
     {
         var ticketsSold = context.Tickets.Sum(i => i.TicketAmount.Ticket_Amount);
         var payouts = context.WeeklyPlays.Sum(i => i.Payout_Amount);
         if (payouts == null)
             payouts = 0;
         jackpot.JackpotBalance = (Decimal)(ticketsSold - payouts);
     }
     else
         jackpot.JackpotBalance = 0;
     return jackpot;
 }