Merge branch 'Shared-Local-Storage-frag-jetzt-antworte-jetzt' into 'staging'

Adds basic service to respond with localStorage info

See merge request arsnova/frag.jetzt!706

src/app/app.config.ts

@@ -2,10 +2,12 @@ import { Injectable } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { environment } from '../environments/environment';
 import { IAppConfig } from './models/app-config.model';
+
 @Injectable()
 export class AppConfig {
     static settings: IAppConfig;
-    constructor(private http: HttpClient) {}
+    constructor(private http: HttpClient) {
+    }
     load() {
         const jsonFile = `assets/config/config.${environment.name}.json`;
         return new Promise<void>((resolve, reject) => {

src/app/app.module.ts

-import { NgModule } from '@angular/core';
+import { NgModule, APP_INITIALIZER } from '@angular/core';
 import { AppComponent } from './app.component';
 import { RegisterComponent } from './components/home/_dialogs/register/register.component';
 import { PasswordResetComponent } from './components/home/_dialogs/password-reset/password-reset.component';
@@ -62,6 +62,7 @@ import { SpacyService } from './services/http/spacy.service';
 import { QuizNowComponent } from './components/shared/quiz-now/quiz-now.component';
 import { JoyrideModule } from 'ngx-joyride';
 import { QuillModule } from 'ngx-quill';
+import { LocalStorageShareService } from './services/http/local-storage-share.service';
 
 import 'prismjs';
 import 'prismjs/plugins/line-numbers/prism-line-numbers.js';
@@ -149,11 +150,11 @@ export function initializeApp(appConfig: AppConfig) {
     QuillModule.forRoot()
   ],
   providers: [
-    /*AppConfig,
+    AppConfig,
     { provide: APP_INITIALIZER,
       useFactory: initializeApp,
-      deps: [AppConfig], multi: true
-    },*/
+      deps: [AppConfig, LocalStorageShareService], multi: true
+    },
     {
       provide: HTTP_INTERCEPTORS,
       useClass: AuthenticationInterceptor,

src/app/services/http/local-storage-share.service.spec.ts

+/*import { TestBed } from '@angular/core/testing';
+
+import { LocalStorageShareService } from './local-storage-share.service';
+
+describe('LocalStorageShareService', () => {
+  let service: LocalStorageShareService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(LocalStorageShareService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});*/

src/app/services/http/local-storage-share.service.ts

+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class LocalStorageShareService {
+
+  constructor() {
+    window.addEventListener('message', this.messageHandler, false);
+  }
+
+  messageHandler(event) {
+    const { action, key, value} = event.data;
+    if (action === 'save') {
+      window.localStorage.setItem(key, JSON.stringify(value));
+    } else if (action === 'get') {
+      const obj = JSON.parse(window.localStorage.getItem(key));
+      if(obj !== null) {
+        event.source.postMessage({
+          action: 'returnData',
+          key,
+          obj
+        }, '*');
+      }
+    }
+  }
+}