| /** |
| * 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 {ActivatedRouteSnapshot, CanActivate, RouterStateSnapshot} from '@angular/router'; |
| import * as fromCustomers from '../store/index'; |
| import {CustomersStore} from '../store/index'; |
| import {CatalogService} from '../../services/catalog/catalog.service'; |
| import {ExistsGuardService} from '../../common/guards/exists-guard'; |
| import {Observable} from 'rxjs/Observable'; |
| import {LoadAction} from '../store/catalogs/catalog.actions'; |
| import {of} from 'rxjs/observable/of'; |
| |
| @Injectable() |
| export class CatalogExistsGuard implements CanActivate { |
| |
| constructor(private store: CustomersStore, |
| private catalogService: CatalogService, |
| private existsGuardService: ExistsGuardService) { |
| } |
| |
| hasCatalogInStore(): Observable<boolean> { |
| const timestamp$: Observable<number> = this.store.select(fromCustomers.getCustomerCatalogLoadedAt); |
| |
| return this.existsGuardService.isWithinExpiry(timestamp$); |
| } |
| |
| hasCatalogInApi(id: string): Observable<boolean> { |
| return this.catalogService.findCatalog(id, true) |
| .catch(() => { |
| return Observable.of(null); |
| }) |
| .map(catalogEntity => new LoadAction(catalogEntity)) |
| .do((action: LoadAction) => this.store.dispatch(action)) |
| .map(catalog => !!catalog); |
| } |
| |
| hasCatalog(id: string): Observable<boolean> { |
| return this.hasCatalogInStore() |
| .switchMap(inStore => { |
| if (inStore) { |
| return of(inStore); |
| } |
| return this.hasCatalogInApi(id); |
| }); |
| } |
| |
| canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> { |
| return this.hasCatalog('customers'); |
| } |
| } |