[AAE-19928] Add storage prefix factory (#9303)

* [AAE-19928] Add storage prefix factory

* fix names

* CR

* CR

lib/core/src/lib/app-config/app-config-storage-prefix.factory.spec.ts

@@ -0,0 +1,107 @@
+/*!
+ * @license
+ * Copyright © 2005-2023 Hyland Software, Inc. and its affiliates. All rights reserved.
+ *
+ * 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 { of } from 'rxjs';
+import { StoragePrefixFactory, StoragePrefixFactoryService } from './app-config-storage-prefix.factory';
+import { AppConfigService } from './app-config.service';
+
+type TestAppConfigService = Pick<AppConfigService, 'select'>;
+
+describe('StoragePrefixFactory', () => {
+    it('should get prefix set in app.config.json', () => {
+        const appConfigPrefix = 'prefix-from-app-config-json';
+        const appConfigService: TestAppConfigService = {
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            select(_property: string) {
+                return of(appConfigPrefix);
+            }
+        };
+
+        const prefixFactory = new StoragePrefixFactory(appConfigService as AppConfigService);
+
+        prefixFactory.getPrefix().subscribe((prefix) => {
+            expect(prefix).toBe(appConfigPrefix);
+        });
+    });
+
+    it('should work with NO prefix set in app.config.json', () => {
+        const appConfigPrefix = undefined;
+        const appConfigService: TestAppConfigService = {
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            select(_property: string) {
+                return of(appConfigPrefix);
+            }
+        };
+
+        const prefixFactory = new StoragePrefixFactory(appConfigService as AppConfigService);
+
+        prefixFactory.getPrefix().subscribe((prefix) => {
+            expect(prefix).toBe(appConfigPrefix);
+        });
+    });
+
+    it('should return prefix from provided factory, when NO prefix is set in app.config.json', () => {
+        const appConfigPrefix = undefined;
+        const appConfigService: TestAppConfigService = {
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            select(_property: string) {
+                return of(appConfigPrefix);
+            }
+        };
+
+        const externalPrefixFactory: StoragePrefixFactoryService = {
+            getPrefix() {
+                return of('prefix-from-factory');
+            }
+        };
+
+        const prefixFactory = new StoragePrefixFactory(
+            appConfigService as AppConfigService,
+            externalPrefixFactory
+        );
+
+        prefixFactory.getPrefix().subscribe((prefix) => {
+            expect(prefix).toBe('prefix-from-factory');
+        });
+    });
+
+    it('should return prefix from app.config.json even when factory is provided', () => {
+        const appConfigPrefix = 'prefix-from-app-config-json';
+
+        const appConfigService: TestAppConfigService = {
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            select(_property: string) {
+                return of(appConfigPrefix);
+            }
+        };
+
+        const externalPrefixFactory: StoragePrefixFactoryService = {
+            getPrefix() {
+                return of('prefix-from-factory');
+            }
+        };
+
+        const prefixFactory = new StoragePrefixFactory(
+            appConfigService as AppConfigService,
+            externalPrefixFactory
+        );
+
+        prefixFactory.getPrefix().subscribe((prefix) => {
+            expect(prefix).toBe(appConfigPrefix);
+        });
+    });
+});

lib/core/src/lib/app-config/app-config-storage-prefix.factory.ts

@@ -0,0 +1,52 @@
+/*!
+ * @license
+ * Copyright © 2005-2023 Hyland Software, Inc. and its affiliates. All rights reserved.
+ *
+ * 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 { Inject, Injectable, InjectionToken, Optional } from '@angular/core';
+import { AppConfigService, AppConfigValues } from './app-config.service';
+import { Observable, of } from 'rxjs';
+import { switchMap } from 'rxjs/operators';
+
+export interface StoragePrefixFactoryService {
+    getPrefix(): Observable<string | undefined>;
+}
+
+export const STORAGE_PREFIX_FACTORY_SERVICE = new InjectionToken<StoragePrefixFactoryService>('STORAGE_PREFIX_FACTORY_SERVICE');
+
+@Injectable({
+    providedIn: 'root'
+})
+export class StoragePrefixFactory {
+    constructor(
+        private appConfigService: AppConfigService,
+        @Optional()
+        @Inject(STORAGE_PREFIX_FACTORY_SERVICE) private storagePrefixFactory?: StoragePrefixFactoryService
+    ) {}
+
+    getPrefix(): Observable<string | undefined> {
+        return this.appConfigService.select(AppConfigValues.STORAGE_PREFIX).pipe(
+            switchMap((prefix: string | undefined) => {
+                if (prefix) {
+                    return of(prefix);
+                }
+
+                return this.storagePrefixFactory ?
+                    this.storagePrefixFactory.getPrefix() :
+                    of(prefix);
+            })
+        );
+    }
+}

lib/core/src/lib/app-config/app-config.loader.ts

@@ -18,22 +18,29 @@
 import { AppConfigService, AppConfigValues } from './app-config.service';
 import { StorageService } from '../common/services/storage.service';
 import { AdfHttpClient } from '@alfresco/adf-core/api';
+import { StoragePrefixFactory } from './app-config-storage-prefix.factory';
 
 /**
  * Create a factory to load app configuration
  *
  * @param appConfigService app config service
  * @param storageService storage service
  * @param adfHttpClient http client
+ * @param storagePrefixFactory prefix factory
  * @returns factory function
  */
-export function loadAppConfig(appConfigService: AppConfigService, storageService: StorageService, adfHttpClient: AdfHttpClient) {
+export function loadAppConfig(
+    appConfigService: AppConfigService,
+    storageService: StorageService,
+    adfHttpClient: AdfHttpClient,
+    storagePrefixFactory: StoragePrefixFactory
+    ) {
 
     const init = () => {
         adfHttpClient.disableCsrf = appConfigService.get<boolean>(AppConfigValues.DISABLECSRF, true);
         storageService.prefix = appConfigService.get<string>(AppConfigValues.STORAGE_PREFIX, '');
 
-        appConfigService.select(AppConfigValues.STORAGE_PREFIX).subscribe((property) => {
+        storagePrefixFactory.getPrefix().subscribe((property) => {
             storageService.prefix = property;
         });
     };

lib/core/src/lib/app-config/public-api.ts

@@ -18,5 +18,6 @@
 export * from './app-config.service';
 export * from './debug-app-config.service';
 export * from './app-config.pipe';
+export * from './app-config-storage-prefix.factory';
 
 export * from './app-config.module';

lib/core/src/lib/core.module.ts

@@ -66,6 +66,7 @@ import { AlfrescoApiLoaderService, createAlfrescoApiInstance } from './api-facto
 import { AdfDateFnsAdapter } from './common/utils/date-fns-adapter';
 import { MomentDateAdapter } from './common/utils/moment-date-adapter';
 import { AdfDateTimeFnsAdapter } from './common/utils/datetime-fns-adapter';
+import { StoragePrefixFactory } from './app-config';
 
 @NgModule({
     imports: [
@@ -151,10 +152,17 @@ export class CoreModule {
                 AdfDateFnsAdapter,
                 AdfDateTimeFnsAdapter,
                 MomentDateAdapter,
+                StoragePrefixFactory,
                 {
                     provide: APP_INITIALIZER,
                     useFactory: loadAppConfig,
-                    deps: [ AppConfigService, StorageService, AdfHttpClient ], multi: true
+                    deps: [
+                        AppConfigService,
+                        StorageService,
+                        AdfHttpClient,
+                        StoragePrefixFactory
+                    ],
+                    multi: true
                 },
                 {
                     provide: APP_INITIALIZER,