src/app/teller/teller-login.guard.ts

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import {Injectable} from '@angular/core';
import {ActivatedRoute, ActivatedRouteSnapshot, CanActivate, Router, RouterStateSnapshot} from '@angular/router';
import {Observable} from 'rxjs/Observable';
import * as fromTeller from './store/index';
import {TellerStore} from './store/index';

@Injectable()
export class TellerLoginGuard implements CanActivate {

  constructor(private store: TellerStore, private router: Router, private route: ActivatedRoute) {}

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> {
    return this.store.select(fromTeller.isAuthenticated)
      .map(isAuthenticated => {
        if (!isAuthenticated) {
          this.router.navigate(['/teller/auth'], { relativeTo: this.route });
          return false;
        }
        return true;
      });
  }
}