public IHttpActionResult UpdatePurchaseOrder([FromBody] CustomPurchaseOrder purchaseOrder)
        {
            CustomItem[] customItems = purchaseOrder.CustomItems;
            Debug.WriteLine(purchaseOrder.OrderID);
            int orderId = purchaseOrder.OrderID;

            for (int i = 0; i < customItems.Count(); i++)
            {
                CustomItem          customItem          = customItems[i];
                PurchaseOrderDetail purchaseOrderDetail = db.PurchaseOrderDetails.SingleOrDefault(
                    r => r.ItemID == customItem.ItemID && r.OrderID == orderId);
                if (purchaseOrderDetail == null)
                {
                    return(NotFound());
                }
                else
                {
                    purchaseOrderDetail.QuantityReceived = customItem.QuantityReceived;
                    db.SaveChanges();
                }
            }

            PurchaseOrder order = db.PurchaseOrders.SingleOrDefault(p => p.PurchaseOrderID == purchaseOrder.OrderID);
            List <PurchaseOrderDetail> orderDetails = order.PurchaseOrderDetails.ToList();
            bool isCompleted  = true;
            bool isIncomplete = false;

            for (int i = 0; i < orderDetails.Count(); i++)
            {
                if (orderDetails[i].QuantityReceived > 0)
                {
                    isIncomplete = true;
                }
                if (orderDetails[i].QuantityReceived < orderDetails[i].Quantity)
                {
                    isCompleted = false;
                }
            }

            if (isCompleted)
            {
                order.OrderStatus = OrderStatus.Completed;
            }
            else if (isIncomplete)
            {
                order.OrderStatus = OrderStatus.Incompleted;
            }
            db.SaveChanges();
            return(Ok());
        }
        public IHttpActionResult GetPurchaseOrderDetail(int id)
        {
            PurchaseOrder       order = db.PurchaseOrders.SingleOrDefault(p => p.PurchaseOrderID == id);
            CustomPurchaseOrder customPurchaseOrder = new CustomPurchaseOrder
            {
                OrderID      = order.PurchaseOrderID,
                OrderDate    = order.OrderDate.ToString("dd/MM/yyyy"),
                SupplierName = order.Supplier.SupplierName,
                Status       = order.OrderStatus.ToString(),
                CustomItems  = GetItemsForOrder(id)
            };

            return(Ok(customPurchaseOrder));
        }