Add basic login, data and authentification handling

webservice/Frontend/Aktienbot/src/app/Services/data.service.ts

@@ -0,0 +1,22 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+const API_URL = 'http://localhost:8080/api/test/';
+@Injectable({
+  providedIn: 'root',
+})
+export class UserService {
+  constructor(private http: HttpClient) {}
+  getPublicContent(): Observable<any> {
+    return this.http.get(API_URL + 'all', { responseType: 'text' });
+  }
+  getUserBoard(): Observable<any> {
+    return this.http.get(API_URL + 'user', { responseType: 'text' });
+  }
+  getModeratorBoard(): Observable<any> {
+    return this.http.get(API_URL + 'mod', { responseType: 'text' });
+  }
+  getAdminBoard(): Observable<any> {
+    return this.http.get(API_URL + 'admin', { responseType: 'text' });
+  }
+}