Refactoring Services (#61)

* Refactoring ViewModels into Razor Pages models

* Cleaning up Basket viewcomponent

* Refactoring services.
Fixed bug in basket item counter.

src/ApplicationCore/Services/OrderService.cs

@@ -0,0 +1,40 @@
+using ApplicationCore.Interfaces;
+using ApplicationCore.Entities.OrderAggregate;
+using System.Threading.Tasks;
+using Microsoft.eShopWeb.ApplicationCore.Entities;
+using System.Collections.Generic;
+
+namespace ApplicationCore.Services
+{
+    public class OrderService : IOrderService
+    {
+        private readonly IAsyncRepository<Order> _orderRepository;
+        private readonly IAsyncRepository<Basket> _basketRepository;
+        private readonly IAsyncRepository<CatalogItem> _itemRepository;
+
+        public OrderService(IAsyncRepository<Basket> basketRepository,
+            IAsyncRepository<CatalogItem> itemRepository,
+            IAsyncRepository<Order> orderRepository)
+        {
+            _orderRepository = orderRepository;
+            _basketRepository = basketRepository;
+            _itemRepository = itemRepository;
+        }
+
+        public async Task CreateOrderAsync(int basketId, Address shippingAddress)
+        {
+            var basket = await _basketRepository.GetByIdAsync(basketId);
+            var items = new List<OrderItem>();
+            foreach (var item in basket.Items)
+            {
+                var catalogItem = await _itemRepository.GetByIdAsync(item.CatalogItemId);
+                var itemOrdered = new CatalogItemOrdered(catalogItem.Id, catalogItem.Name, catalogItem.PictureUri);
+                var orderItem = new OrderItem(itemOrdered, item.UnitPrice, item.Quantity);
+                items.Add(orderItem);
+            }
+            var order = new Order(basket.BuyerId, shippingAddress, items);
+
+            await _orderRepository.AddAsync(order);
+        }
+    }
+}