build: use custom url scheme independent from appId

src/app/modules/auth/factories/auth.factory.ts

@@ -21,7 +21,6 @@ import {
 } from '@openid/appauth';
 import {Browser, IAuthConfig} from 'ionic-appauth';
 import {PAIAAuthService} from '../paia/paia-auth.service';
-import config from '../../../../../capacitor.config';
 import {ConfigProvider} from '../../config/config.provider';
 import {
   SCAuthorizationProvider,
@@ -117,6 +116,8 @@ function getEndpointsConfig(
  * Return a URL of the app, depending on the platform where it is running
  */
 function getRedirectUrl(routePath: string): string {
-  const appSchema = Capacitor.isNativePlatform() ? config.appId : 'https';
+  const appSchema = Capacitor.isNativePlatform()
+    ? environment.custom_url_scheme
+    : 'https';
   return `${appSchema}://${environment.app_host}/${routePath}`;
 }

src/environments/environment.ts

@@ -21,6 +21,7 @@ export const environment = {
   backend_url: 'https://mobile.server.uni-frankfurt.de',
   daia_url: 'https://daia.hebis.de/DAIA2/UB_Frankfurt',
   app_host: 'mobile.app.uni-frankfurt.de',
+  custom_url_scheme: 'de.anyschool.app',
   backend_version: '2.0.0',
   use_fake_backend: false,
   production: false,