Add conditional logic to use OpenAPI

Author: sander1095

src/ProjectTemplates/Web.ProjectTemplates/content/WebApiAot-CSharp/Program.Main.cs

@@ -24,11 +24,22 @@ public static void Main(string[] args)
         };
 
         var todosApi = app.MapGroup("/todos");
-        todosApi.MapGet("/", () => sampleTodos);
+        todosApi.MapGet("/", () => sampleTodos)
+                #if (EnableOpenAPI)
+                .WithName("GetTodos");
+                #elif
+                ;
+                #endif
+
         todosApi.MapGet("/{id}", (int id) =>
             sampleTodos.FirstOrDefault(a => a.Id == id) is { } todo
                 ? Results.Ok(todo)
-                : Results.NotFound());
+                : Results.NotFound())
+            #if (EnableOpenAPI)
+            .WithName("GetTodoById");
+            #elif
+            ;
+            #endif
 
         app.Run();
     }

src/ProjectTemplates/Web.ProjectTemplates/content/WebApiAot-CSharp/Program.cs

@@ -7,8 +7,20 @@
     options.SerializerOptions.TypeInfoResolverChain.Insert(0, AppJsonSerializerContext.Default);
 });
 
+#if (EnableOpenAPI)
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+#endif
+
 var app = builder.Build();
 
+#if (EnableOpenAPI)
+if (app.Environment.IsDevelopment())
+{
+    app.MapOpenApi();
+}
+#endif
+
 var sampleTodos = new Todo[] {
     new(1, "Walk the dog"),
     new(2, "Do the dishes", DateOnly.FromDateTime(DateTime.Now)),
@@ -18,11 +30,22 @@
 };
 
 var todosApi = app.MapGroup("/todos");
-todosApi.MapGet("/", () => sampleTodos);
+todosApi.MapGet("/", () => sampleTodos)
+    #if (EnableOpenAPI)
+        .WithName("GetTodos");
+    #elif
+    ;
+    #endif
+
 todosApi.MapGet("/{id}", (int id) =>
     sampleTodos.FirstOrDefault(a => a.Id == id) is { } todo
         ? Results.Ok(todo)
-        : Results.NotFound());
+        : Results.NotFound())
+    #if (EnableOpenAPI)
+    .WithName("GetTodoById");
+    #elif
+    ;
+    #endif
 
 app.Run();