src/app/services/http-response-interceptor.service.ts

/*
******************************************************************************
* Copyright © 2018 PTA GmbH.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
*
*     http://www.eclipse.org/legal/epl-v10.html
*
******************************************************************************
*/
import { Injectable } from '@angular/core';
import { Router, ActivatedRoute } from '@angular/router';
import { ToasterMessage } from '../common/banner-message';
import { ErrorType } from '../common/enums';
import { ToasterMessageService, MessageDefines } from './toaster-message.service';

@Injectable()
export class HttpResponseInterceptorService {

  constructor(
    private messageService: ToasterMessageService,
    private router: Router,
    private activatedRoute: ActivatedRoute) { this.init(); }

  private init(): void {
    this.subscribeToMessageService();
  }

  private subscribeToMessageService() {
    this.messageService.errorOccured$.subscribe((errorMessage: ToasterMessage) => {
      if ((errorMessage.errorType === ErrorType.authentication)) {
        if (this.router.url.includes('loggedout')) {
          return;
        }

        const fwdUrl = this.activatedRoute.snapshot.queryParams['fwdUrl'];
        if (fwdUrl) {
          window.location.href = fwdUrl;
        } else {
          this.router.navigate(['/loggedout']);
        }
        this.messageService.loginLogoff$.emit(MessageDefines.MSG_LOG_OFF);
      }
    });
  }
}