feat(doc): move notifivation

apps/ngrx/notification/src/app/data-access/notification.service.ts

@@ -0,0 +1,40 @@
+import { PushService } from '@angular-challenges/ngrx-notification/backend';
+import {
+  isSchool,
+  isStudent,
+  isTeacher,
+  Push,
+} from '@angular-challenges/ngrx-notification/model';
+import { inject, Injectable } from '@angular/core';
+import { Store } from '@ngrx/store';
+import { filter } from 'rxjs';
+import { studentActions } from '../student/store/student.actions';
+import { teacherActions } from '../teacher/store/teacher.actions';
+
+@Injectable({ providedIn: 'root' })
+export class NotificationService {
+  private pushService = inject(PushService);
+  private store = inject(Store);
+
+  init() {
+    this.pushService.notification$
+      .pipe(filter(Boolean))
+      .subscribe((notification: Push) => {
+        if (isTeacher(notification)) {
+          this.store.dispatch(
+            teacherActions.addOneTeacher({ teacher: notification })
+          );
+        }
+        if (isStudent(notification)) {
+          this.store.dispatch(
+            studentActions.addOneStudent({ student: notification })
+          );
+        }
+        if (isSchool(notification)) {
+          // SchoolStore is not providedin root. thus at initialization, SchoolStore is undefined
+          // Option 1: set SchoolStore in root, but we don't want this to separate our class.
+          // Option 2: your turn
+        }
+      });
+  }
+}