add angular material project

jambotron-ui/src/app/helpers/auth.interceptor.ts

@@ -0,0 +1,26 @@
+import { HTTP_INTERCEPTORS, HttpEvent } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
+
+import { TokenStorageService } from '../services/token-storage.service';
+import { Observable } from 'rxjs';
+
+const TOKEN_HEADER_KEY = 'Authorization';       // for Spring Boot back-end
+
+@Injectable()
+export class AuthInterceptor implements HttpInterceptor {
+  constructor(private token: TokenStorageService) { }
+
+  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
+    let authReq = req;
+    const token = this.token.getToken();
+    if (token != null) {
+      authReq = req.clone({ headers: req.headers.set(TOKEN_HEADER_KEY, 'Bearer ' + token) });
+    }
+    return next.handle(authReq);
+  }
+}
+
+export const authInterceptorProviders = [
+  { provide: HTTP_INTERCEPTORS, useClass: AuthInterceptor, multi: true }
+];