Changed Basket API integration

Author: jsuarezruiz

src/Mobile/eShopOnContainers/eShopOnContainers.Core/ViewModels/Base/MessengerKeys.cs

@@ -5,9 +5,6 @@ public class MessengerKeys
         // Add product to basket
         public const string AddProduct = "AddProduct";
 
-        // Update Basket
-        public const string UpdateBasket = "UpdateBasket";
-
         // Filter
         public const string Filter = "Filter";
 

src/Mobile/eShopOnContainers/eShopOnContainers.Core/ViewModels/BasketViewModel.cs

@@ -6,7 +6,6 @@
 using eShopOnContainers.Core.ViewModels.Base;
 using eShopOnContainers.ViewModels.Base;
 using System;
-using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Threading.Tasks;
@@ -66,20 +65,26 @@ public decimal Total
 
         public ICommand CheckoutCommand => new Command(Checkout);
 
-        public override Task InitializeAsync(object navigationData)
+        public override async Task InitializeAsync(object navigationData)
         {
             if (BasketItems == null)
                 BasketItems = new ObservableCollection<BasketItem>();
 
-            MessagingCenter.Unsubscribe<CatalogViewModel, List<BasketItem>>(this, MessengerKeys.UpdateBasket);
-            MessagingCenter.Subscribe<CatalogViewModel, List<BasketItem>>(this, MessengerKeys.UpdateBasket, (sender, arg) =>
+            var authToken = Settings.AuthAccessToken;
+            var userInfo = await _userService.GetUserInfoAsync(authToken);
+
+            // Update Basket
+            var basket = await _basketService.GetBasketAsync(userInfo.UserId, authToken);
+
+            if (basket != null && basket.Items != null && basket.Items.Any())
             {
-                foreach (var basketItem in arg)
+                BasketItems.Clear();
+                foreach (var basketItem in basket.Items)
                 {
                     BadgeCount += basketItem.Quantity;
                     AddBasketItem(basketItem);
                 }
-            });
+            }
 
             MessagingCenter.Unsubscribe<CatalogViewModel, CatalogItem>(this, MessengerKeys.AddProduct);
             MessagingCenter.Subscribe<CatalogViewModel, CatalogItem>(this, MessengerKeys.AddProduct, (sender, arg) =>
@@ -89,7 +94,7 @@ public override Task InitializeAsync(object navigationData)
                 AddCatalogItem(arg);
             });
 
-            return base.InitializeAsync(navigationData);
+            await base.InitializeAsync(navigationData);
         }
 
         private void AddCatalogItem(CatalogItem item)

src/Mobile/eShopOnContainers/eShopOnContainers.Core/ViewModels/CatalogViewModel.cs

@@ -104,17 +104,6 @@ public override async Task InitializeAsync(object navigationData)
             Brands = await _productsService.GetCatalogBrandAsync();
             Types = await _productsService.GetCatalogTypeAsync();
 
-            var authToken = Settings.AuthAccessToken;
-            var userInfo = await _userService.GetUserInfoAsync(authToken);
-
-            // Update Basket
-            var basket = await _basketService.GetBasketAsync(userInfo.UserId, authToken);
-
-            if (basket != null && basket.Items != null && basket.Items.Any())
-            {
-                MessagingCenter.Send(this, MessengerKeys.UpdateBasket, basket.Items);
-            }
-
             IsBusy = false;
         }
 

src/Mobile/eShopOnContainers/eShopOnContainers.Core/Views/MainView.xaml.cs

@@ -32,15 +32,14 @@ protected override async void OnAppearing()
                 }
             });
 
+            var homeViewModel = ViewModelLocator.Instance.Resolve<CatalogViewModel>();
+            await homeViewModel.InitializeAsync(null);
+            HomeView.BindingContext = homeViewModel;
 
             var basketViewModel = ViewModelLocator.Instance.Resolve<BasketViewModel>();
             await basketViewModel.InitializeAsync(null);
             BasketView.BindingContext = basketViewModel;
 
-            var homeViewModel = ViewModelLocator.Instance.Resolve<CatalogViewModel>();
-            await homeViewModel.InitializeAsync(null);
-            HomeView.BindingContext = homeViewModel;
-
             var profileViewModel = ViewModelLocator.Instance.Resolve<ProfileViewModel>();
             await profileViewModel.InitializeAsync(null);
             ProfileView.BindingContext = profileViewModel;