public async Task <ActionResult <JsonResult> > GetTopDestination()
{
var topN = 5;
//get all destination count and sort and take top N
var flightDestCount = (await _bookingRepo.GetAllDestinationCount());
//assign topN or flightDestCount count, whichever is higher.
if (flightDestCount.Count() < topN)
{
topN = flightDestCount.Count();
}
flightDestCount = flightDestCount.OrderByDescending(a => a.FreqCount).Take(topN).ToList();
if (flightDestCount != null && flightDestCount.Count() >= topN)
{
return(Json(flightDestCount));
}
//if reach here, means destination is null or not enough number of destination
return(NotFound("null or not enough destination"));
}
