Add Reviews to product service and product details VM

samples/Commerce/Commerce.Shared/App.xaml.cs

@@ -65,7 +65,7 @@ namespace Commerce
 			.ConfigureServices(services =>
 			{
 				services
-				.AddSingleton<IProductService>(sp => new ProductService("products.json"))
+				.AddSingleton<IProductService>(sp => new ProductService("products.json", "reviews.json"))
 				.AddSingleton<ICartService>(sp => new CartService("products.json"))
 				.AddSingleton<IProfileService>(sp => new ProfileService());
 			})

samples/Commerce/Commerce.Shared/Commerce.Shared.projitems

@@ -167,6 +167,7 @@
     <Content Include="$(MSBuildThisFileDirectory)Assets\Products\isochill-armourvent-hat.png" />
     <Content Include="$(MSBuildThisFileDirectory)Assets\Products\profile-michael-scott.png" />
     <Content Include="$(MSBuildThisFileDirectory)Assets\Products\the-absolute-freedom.png" />
+    <Content Include="$(MSBuildThisFileDirectory)reviews.json" />
     <None Include="$(MSBuildThisFileDirectory)Assets\SharedAssets.md" />
   </ItemGroup>
   <ItemGroup>

samples/Commerce/Commerce.Shared/Services/IProductService.cs

@@ -8,4 +8,6 @@ namespace Commerce.Services;
 public interface IProductService
 {
 	Task<IEnumerable<Product>> GetProducts(string? term, CancellationToken ct);
+
+	Task<Review[]> GetReviews(int productId, CancellationToken ct);
 }

samples/Commerce/Commerce.Shared/Services/ProductServices.cs

@@ -9,8 +9,10 @@ namespace Commerce.Services;
 
 public class ProductService : JsonDataService<Product>, IProductService
 {
-	public ProductService(string dataFile) : base(dataFile)
+	private readonly JsonDataService<Review> _reviewDataService;
+	public ProductService(string productDataFile, string reviewDataFile) : base(productDataFile)
 	{
+		_reviewDataService = new JsonDataService<Review>(reviewDataFile);
 	}
 
 	public async Task<IEnumerable<Product>> GetProducts(string? term, CancellationToken ct)
@@ -23,4 +25,10 @@ public class ProductService : JsonDataService<Product>, IProductService
 
 		return products;
 	}
+
+	public async Task<Review[]> GetReviews(int productId, CancellationToken ct)
+	{
+		var reviews = await _reviewDataService.GetEntities();
+		return reviews;
+	}
 }

samples/Commerce/Commerce.Shared/ViewModels/ProductDetailsViewModel.cs

@@ -21,6 +21,8 @@ public partial class ProductDetailsViewModel
 
 	public IFeed<Product> Product => Feed.Async(Load);
 
+	public IFeed<Review[]> Reviews => Product.SelectAsync(async (p, ct) => await _productService.GetReviews(p.ProductId, ct));
+
 	private async ValueTask<Product> Load(CancellationToken ct)
 		=> _product;
 }

samples/Commerce/Commerce.Shared/ViewModels/ProductDetailsViewModel.g.cs

@@ -25,11 +25,13 @@ partial class ProductDetailsViewModel : IAsyncDisposable
 
 			Model = vm;
 			Product = ctx.GetOrCreateState(vm.Product);
+			Reviews = ctx.GetOrCreateState(vm.Reviews);
 		}
 
 		public ProductDetailsViewModel Model { get; }
 
 		public IFeed<Product> Product { get; }
+		public IFeed<Review[]> Reviews { get; }
 	}
 
 	/// <inheritdoc />

samples/Commerce/Commerce.Shared/reviews.json

@@ -0,0 +1,17 @@
+[
+  {
+    "Name": "Jean-Ralphio",
+    "Message": "Really good shoes. Love them",
+    "Photo": "https://loremflickr.com/360/360/face?random=1"
+  },
+  {
+    "Name": "Eric",
+    "Message": "Instant buy, instant classic",
+    "Photo": "https://loremflickr.com/360/360/face?random=2"
+  },
+  {
+    "Name": "Lisa Kudrow",
+    "Message": "I feel like walking on clouds with these shoes. Never experienced somthing simliar",
+    "Photo": "https://loremflickr.com/360/360/face?random=3"
+  }
+]