public ActionResult <IEnumerable <Sale> > GetSales(DateTime?startDate = null, DateTime?endDate = null)
{
var items = _repository.Filter(x => (!startDate.HasValue && !endDate.HasValue) ||
(!startDate.HasValue && endDate.HasValue && x.SalesDate <= endDate.Value) ||
(startDate.HasValue && !endDate.HasValue && x.SalesDate >= startDate.Value) ||
(startDate.HasValue && endDate.HasValue && x.SalesDate <= endDate.Value && x.SalesDate >= startDate.Value));
if (items != null && items.Count() > 0)
{
return(Ok(items));
}
else
{
return(NotFound());
}
}