Update 'Sources/OpenLibraryWrapper/Program.cs'

Sources/OpenLibraryWrapper/Program.cs

@@ -6,11 +6,23 @@ using MyLibraryManager;
 using OpenLibraryClient;
 using StubbedDTO;
 
+var dto = System.Environment.GetEnvironmentVariable("DTO", System.EnvironmentVariableTarget.Process);
+
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.
 
-builder.Services.AddSingleton<IDtoManager, Stub>();
+switch(dto)
+{
+    case "API":
+        builder.Services.AddSingleton<IDtoManager, OpenLibClientAPI>();
+        break;
+    default:
+        builder.Services.AddSingleton<IDtoManager, Stub>();
+        break;
+}
+
 builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();