Move the pic controller to a minimal API

Author: davidfowl

src/ApiGateways/Web.Bff.Shopping/aggregator/Program.cs

@@ -32,8 +32,6 @@
 app.UseAuthentication();
 app.UseAuthorization();
 
-app.MapGet("/", () => Results.Redirect("/swagger"));
-
 app.MapControllers();
 app.MapReverseProxy();
 

src/Directory.Packages.props

@@ -49,6 +49,7 @@
     <PackageVersion Include="Microsoft.AspNetCore.Identity.UI" Version="7.0.3" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="7.0.3" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.3" />
+    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="7.0.5" />
     <PackageVersion Include="Microsoft.AspNetCore.SignalR.StackExchangeRedis" Version="7.0.3" />
     <PackageVersion Include="Microsoft.AspNetCore.SpaServices.Extensions" Version="7.0.3" />
     <PackageVersion Include="Microsoft.AspNetCore.TestHost" Version="7.0.3" />

src/Services/Basket/Basket.API/Program.cs

@@ -19,8 +19,6 @@
 
 app.UseServiceDefaults();
 
-app.MapGet("/", () => Results.Redirect("/swagger"));
-
 app.MapGrpcService<BasketService>();
 app.MapControllers();
 

src/Services/Catalog/Catalog.API/Apis/PicApi.cs

@@ -0,0 +1,42 @@
+using Microsoft.AspNetCore.Routing;
+
+namespace Catalog.API.Apis;
+
+public static class PicApi
+{
+    public static IEndpointConventionBuilder MapPicApi(this IEndpointRouteBuilder routes)
+    {
+        return routes.MapGet("api/v1/catalog/items/{catalogItemId:int}/pic",
+            async (int catalogItemId, CatalogContext db, IWebHostEnvironment environment) =>
+        {
+            var item = await db.CatalogItems.FindAsync(catalogItemId);
+
+            if (item is null)
+            {
+                return Results.NotFound();
+            }
+
+            var path = Path.Combine(environment.ContentRootPath, "Pics", item.PictureFileName);
+
+            string imageFileExtension = Path.GetExtension(item.PictureFileName);
+            string mimetype = GetImageMimeTypeFromImageFileExtension(imageFileExtension);
+
+            return Results.File(path, mimetype);
+        })
+        .WithTags("Pic")
+        .Produces(404);
+
+        static string GetImageMimeTypeFromImageFileExtension(string extension) => extension switch
+        {
+            ".png" => "image/png",
+            ".gif" => "image/gif",
+            ".jpg" or ".jpeg" => "image/jpeg",
+            ".bmp" => "image/bmp",
+            ".tiff" => "image/tiff",
+            ".wmf" => "image/wmf",
+            ".jp2" => "image/jp2",
+            ".svg" => "image/svg+xml",
+            _ => "application/octet-stream",
+        };
+    }
+}

src/Services/Catalog/Catalog.API/Controllers/PicController.cs

@@ -35,9 +35,9 @@
 global using Microsoft.eShopOnContainers.Services.Catalog.API.ViewModel;
 global using Microsoft.Extensions.Configuration;
 global using Microsoft.Extensions.DependencyInjection;
-global using Microsoft.Extensions.FileProviders;
 global using Microsoft.Extensions.Logging;
 global using Microsoft.Extensions.Options;
 global using Polly;
 global using Polly.Retry;
 global using Services.Common;
+global using Catalog.API.Apis;

src/Services/Catalog/Catalog.API/GlobalUsings.cs

@@ -18,8 +18,7 @@
 
 app.UseServiceDefaults();
 
-app.MapGet("/", () => Results.Redirect("/swagger"));
-
+app.MapPicApi();
 app.MapControllers();
 app.MapGrpcService<CatalogService>();
 

src/Services/Catalog/Catalog.API/Program.cs

@@ -44,8 +44,6 @@
 
 app.UseServiceDefaults();
 
-app.MapGet("/", () => Results.Redirect("/swagger"));
-
 app.MapGrpcService<OrderingService>();
 app.MapControllers();
 

src/Services/Ordering/Ordering.API/Program.cs

@@ -4,6 +4,7 @@
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Routing;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
@@ -100,7 +101,7 @@ public static async Task<bool> CheckHealthAsync(this WebApplication app)
         return true;
     }
 
-    public static IApplicationBuilder UseDefaultOpenApi(this IApplicationBuilder app, IConfiguration configuration)
+    public static IApplicationBuilder UseDefaultOpenApi(this WebApplication app, IConfiguration configuration)
     {
         var openApiSection = configuration.GetSection("OpenApi");
 
@@ -139,6 +140,9 @@ public static IApplicationBuilder UseDefaultOpenApi(this IApplicationBuilder app
             }
         });
 
+        // Add a redirect from the root of the app to the swagger endpoint
+        app.MapGet("/", () => Results.Redirect("/swagger")).ExcludeFromDescription();
+
         return app;
     }
 
@@ -151,6 +155,8 @@ public static IServiceCollection AddDefaultOpenApi(this IServiceCollection servi
             return services;
         }
 
+        services.AddEndpointsApiExplorer();
+
         return services.AddSwaggerGen(options =>
         {
             /// {

src/Services/Services.Common/CommonExtensions.cs

@@ -29,6 +29,7 @@
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.UI" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>