Add ResourceScope.ManagementGroup (#53638)

* Add ResourceScope.ManagementGroup

* add test

Author: live1206

eng/packages/http-client-csharp-mgmt/emitter/src/resource-detection.ts

@@ -369,6 +369,8 @@ function getOperationScope(path: string): ResourceScope {
     return ResourceScope.ResourceGroup;
   } else if (path.startsWith("/subscriptions/{subscriptionId}/")) {
     return ResourceScope.Subscription;
+  } else if (path.startsWith("/providers/Microsoft.Management/managementGroups/{managementGroupId}/")) {
+    return ResourceScope.ManagementGroup;
   }
   return ResourceScope.Tenant; // all the templates work as if there is a tenant decorator when there is no such decorator
 }

eng/packages/http-client-csharp-mgmt/emitter/src/resource-metadata.ts

@@ -5,6 +5,7 @@ const ResourceGroupScopePrefix =
   "/subscriptions/{subscriptionId}/resourceGroups";
 const SubscriptionScopePrefix = "/subscriptions";
 const TenantScopePrefix = "/tenants";
+const ManagementGroupScopePrefix = "/providers/Microsoft.Management/managementGroups";
 const Providers = "/providers";
 
 export function calculateResourceTypeFromPath(path: string): string {
@@ -16,6 +17,8 @@ export function calculateResourceTypeFromPath(path: string): string {
       return "Microsoft.Resources/subscriptions";
     } else if (path.startsWith(TenantScopePrefix)) {
       return "Microsoft.Resources/tenants";
+    } else if (path.startsWith(ManagementGroupScopePrefix)) {
+      return "Microsoft.Resources/managementGroups";
     }
     throw `Path ${path} doesn't have resource type`;
   }
@@ -33,7 +36,8 @@ export function calculateResourceTypeFromPath(path: string): string {
 export enum ResourceScope {
   Tenant = "Tenant",
   Subscription = "Subscription",
-  ResourceGroup = "ResourceGroup"
+  ResourceGroup = "ResourceGroup",
+  ManagementGroup = "ManagementGroup"
 }
 
 export interface ResourceMetadata {

eng/packages/http-client-csharp-mgmt/emitter/test/resource-detection.test.ts

@@ -1147,4 +1147,55 @@ interface Employees {
     );
     ok(listByParentEntry);
   });
+
+  it("resource scope as ManagementGroup", async () => {
+    const program = await typeSpecCompile(
+      `
+/** An Employee resource */
+model Employee is TrackedResource<EmployeeProperties> {
+  ...ResourceNameParameter<Employee>;
+}
+
+/** Employee properties */
+model EmployeeProperties {
+  /** Age of employee */
+  age?: int32;
+
+  /** City of employee */
+  city?: string;
+}
+
+interface Operations extends Azure.ResourceManager.Operations {}
+
+@armResourceOperations
+interface Employees {
+    get is Extension.Read<
+    Extension.ManagementGroup<"managementGroupId">,
+    Employee
+  >;
+}
+`,
+      runner
+    );
+    const context = createEmitterContext(program);
+    const sdkContext = await createCSharpSdkContext(context);
+    const root = createModel(sdkContext);
+    updateClients(root, sdkContext);
+    
+    const employeeClient = getAllClients(root).find((c) => c.name === "Employees");
+    ok(employeeClient);
+    
+    const employeeModel = root.models.find((m) => m.name === "Employee");
+    ok(employeeModel);
+
+    // Validate Employee resource metadata should be null (no CRUD operations)
+    const employeeResourceMetadataDecorator = employeeModel.decorators?.find(
+      (d) => d.name === resourceMetadata
+    );
+    ok(employeeResourceMetadataDecorator);
+    strictEqual(
+      employeeResourceMetadataDecorator.arguments.resourceScope,
+      "ManagementGroup"
+    );
+  });
 });