http-intercept

gistfile1.txt

// Intercept Service
import { NavController, NavParams } from 'ionic-angular';
import { Request, XHRBackend, BrowserXhr, ResponseOptions, XSRFStrategy, Response } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/catch';
import 'rxjs/add/observable/throw';

import { HomePage } from '../pages/home/home';

export class AuthenticatedHttpService extends XHRBackend {

    constructor(
      _browserXhr: BrowserXhr,
      _baseResponseOptions: ResponseOptions,
      _xsrfStrategy: XSRFStrategy,
      public navCtrl: NavController
    ) {
        super(_browserXhr, _baseResponseOptions, _xsrfStrategy);
    }

    createConnection(request: Request) {
      let xhrConnection = super.createConnection(request);
      xhrConnection.response = xhrConnection.response.catch((error: Response) => {
        console.log('HERE IN INTERCEPT', error, this.navCtrl);
          if ((error.status === 401 || error.status === 403) && (window.location.href.match(/\?/g) || []).length < 2) {
          // *********  This is where iam redirecting **************//
            this.navCtrl.setRoot(HomePage);
          }
          return Observable.throw(error);
      });
      return xhrConnection;
    }

}

// ************* Added in the modules ***********//
//**********************************************//

providers: [
    { provide: XHRBackend, useClass: AuthenticatedHttpService },
]