public JsonResult SprintBurnDownEstimetedData(long sprintId)
        {
            Decimal sprintEstHour = 0;

            Sprint sprint = unitOfWork.SprintRepository.Find(sprintId);
            List<Task> sprintTasks = unitOfWork.TaskRepository.GetTasksBySprintID(sprintId);
            var chartList = new List<Chart>();

            sprintEstHour = sprintTasks.Sum(p => p.TaskHour);

            int totalDay = (int)(sprint.EndDate - sprint.StartDate).TotalDays;

            decimal y = sprintEstHour;
            for (int x = 0; x < totalDay; x++)
            {
                Chart chart = new Chart { XValue = x, YValue = y };
                chartList.Add(chart);

                y = y - (sprintEstHour / totalDay);
            }

            return Json(chartList, JsonRequestBehavior.AllowGet);
        }
        /// <summary>
        /// Get sprint burndown data against sprint id
        /// Added by Mahedee @19-03-14
        /// </summary>
        /// <param name="sprintId"></param>
        /// <returns></returns>
        public JsonResult SprintBurnDownData(long sprintId)
        {
            Decimal sprintEstHour = 0;

            Sprint sprint = unitOfWork.SprintRepository.Find(sprintId);
            List<Task> sprintTasks = unitOfWork.TaskRepository.GetTasksBySprintID(sprintId);
            var chartList = new List<Chart>();

            sprintEstHour = sprintTasks.Sum(p => p.TaskHour);

            List<TimeLog> expendedTime = unitOfWork.TimeLogRepository.GetTimeLogBySprint(sprintId);

            var SprintTimeLog = from s in expendedTime
                                group s by new { s.EntryDate } into g
                                //select new { g.Key.EntryDate, TotalHour = g.Sum(s => s.TaskHour) };
                                select new { g.Key.EntryDate, TotalRemaingHour = g.Sum(s => s.RemainingHour) };


            int baseValue = 0;
            decimal remainingHour = sprintEstHour;

            for (DateTime dt = sprint.StartDate; dt <= sprint.EndDate && dt <= DateTime.Today; dt = dt.AddDays(1))
            {
                //decimal entryHour = 0;
                //entryHour = SprintTimeLog.Where(p => p.EntryDate == dt).Sum(q=> q.TotalHour);
                decimal? totalRemainingHour = 0;
                totalRemainingHour = SprintTimeLog.Where(p => p.EntryDate == dt).Sum(q => q.TotalRemaingHour);

                //remainingHour = remainingHour - entryHour;
                //List<TimeLog> lstTask = unitOfWork.TimeLogRepository.All.Where(t=>t.SprintID == sprintId

                Chart chart = new Chart { XValue = baseValue, YValue = totalRemainingHour };
                chartList.Add(chart);
                baseValue++;

            }
            return Json(chartList, JsonRequestBehavior.AllowGet);
        }