add entity switch case

Signed-off-by: Brian Fletcher <brian@roadie.io>

packages/app/src/components/catalog/EntityPage.tsx

@@ -60,6 +60,7 @@ import {
   isComponentType,
   isKind,
   isOrphan,
+  hasLabels,
 } from '@internal/plugin-catalog-customized';
 import {
   Direction,
@@ -365,9 +366,13 @@ const overviewContent = (
       <EntityLinksCard />
     </Grid>
 
-    <Grid item md={4} xs={12}>
-      <EntityLabelsCard />
-    </Grid>
+    <EntitySwitch>
+      <EntitySwitch.Case if={hasLabels}>
+        <Grid item md={4} xs={12}>
+          <EntityLabelsCard />
+        </Grid>
+      </EntitySwitch.Case>
+    </EntitySwitch>
 
     {cicdCard}
 

plugins/catalog/src/components/EntityLabelsCard/conditions.ts

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Entity } from '@backstage/catalog-model';
+
+/**
+ * Returns true if the given entity has labels annotation given by the
+ * catalog. For use by EntitySwitch
+ *
+ * @public
+ */
+export function hasLabels(entity: Entity) {
+  return entity?.metadata?.labels
+    ? Object.keys(entity?.metadata?.labels).some(Boolean)
+    : false;
+}

plugins/catalog/src/components/EntityLabelsCard/index.ts

@@ -15,3 +15,4 @@
  */
 
 export { EntityLabelsCard } from './EntityLabelsCard';
+export * from './conditions';

plugins/catalog/src/index.ts

@@ -37,6 +37,7 @@ export * from './components/EntityProcessingErrorsPanel';
 export * from './components/EntitySwitch';
 export * from './components/FilteredEntityLayout';
 export * from './overridableComponents';
+export * from './components/EntityLabelsCard';
 export {
   CatalogEntityPage,
   CatalogIndexPage,