From 88bd7ef966ede89bffde162343a886499b759f85 Mon Sep 17 00:00:00 2001
From: mufaddal motiwala <mufaddalmm.52@gmail.com>
Date: Mon, 13 Dec 2021 11:30:57 +0530
Subject: [PATCH] add a function for fetching user owned entities

Signed-off-by: mufaddal motiwala <mufaddalmm.52@gmail.com>
---
 .../OwnedEntityPicker/useOwnedEntities.ts     | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 plugins/scaffolder/src/components/fields/OwnedEntityPicker/useOwnedEntities.ts

diff --git a/plugins/scaffolder/src/components/fields/OwnedEntityPicker/useOwnedEntities.ts b/plugins/scaffolder/src/components/fields/OwnedEntityPicker/useOwnedEntities.ts
new file mode 100644
index 0000000000..ecdfc5c90f
--- /dev/null
+++ b/plugins/scaffolder/src/components/fields/OwnedEntityPicker/useOwnedEntities.ts
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 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 {
+  catalogApiRef,
+  loadCatalogOwnerRefs,
+  loadIdentityOwnerRefs,
+} from '@backstage/plugin-catalog-react';
+import { identityApiRef, useApi } from '@backstage/core-plugin-api';
+import { Entity, RELATION_OWNED_BY } from '@backstage/catalog-model';
+import { CatalogListResponse } from '@backstage/catalog-client';
+import { useAsync } from 'react-use';
+import { useMemo } from 'react';
+
+export function useOwnedEntities(allowedKinds?: string[]): {
+  loading: boolean;
+  ownedEntities: CatalogListResponse<Entity> | undefined;
+} {
+  const identityApi = useApi(identityApiRef);
+  const catalogApi = useApi(catalogApiRef);
+
+  const { loading, value: refs } = useAsync(async () => {
+    const identityRefs = await loadIdentityOwnerRefs(identityApi);
+    const catalogRefs = await loadCatalogOwnerRefs(catalogApi, identityRefs);
+    const catalogs = await catalogApi.getEntities(
+      allowedKinds
+        ? {
+            filter: {
+              kind: allowedKinds,
+              [`relations.${RELATION_OWNED_BY}`]:
+                [...identityRefs, ...catalogRefs] || [],
+            },
+          }
+        : {
+            filter: {
+              [`relations.${RELATION_OWNED_BY}`]:
+                [...identityRefs, ...catalogRefs] || [],
+            },
+          },
+    );
+    return catalogs;
+  }, []);
+  const ownedEntities = useMemo(() => {
+    return refs;
+  }, [refs]);
+
+  return useMemo(() => ({ loading, ownedEntities }), [loading, ownedEntities]);
+}