/**
 * 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 {AuthGuard} from './auth-guard.service';
import {ActivatedRouteSnapshot, Router, RouterStateSnapshot} from '@angular/router';
import {inject, TestBed} from '@angular/core/testing';
import {Observable} from 'rxjs/Observable';
import {Store} from '@ngrx/store';
import * as fromRoot from '../../../store';

describe('Test Auth Guard Service', () => {

  const route: ActivatedRouteSnapshot = undefined;

  const state: RouterStateSnapshot = undefined;

  const mockRouter = {
    navigate() {
    }
  };

  describe('when logged in', () => {

    beforeEach(() => {
      TestBed.configureTestingModule({
        providers: [
          AuthGuard,
          {provide: Router, useValue: mockRouter},
          {
            provide: Store, useClass: class {
            select = jasmine.createSpy('select').and.callFake(selector => {
              if (selector === fromRoot.getAuthenticationLoading) {
                return Observable.of(false);
              }
              if (selector === fromRoot.getAuthentication) {
                return Observable.of({});
              }
            });
          }
          }
        ]
      });
    });

    it('should test if route is active', (done: DoneFn) => {
      inject([AuthGuard], (authGuard: AuthGuard) => {
        authGuard.canActivate(route, state).subscribe(canActivate => {
          expect(canActivate).toBeTruthy();
          done();
        });
      })();
    });
  });

  describe('when not logged in', () => {

    beforeEach(() => {
      TestBed.configureTestingModule({
        providers: [
          AuthGuard,
          {provide: Router, useValue: mockRouter},
          {
            provide: Store, useClass: class {
            select = jasmine.createSpy('select').and.callFake(selector => {
              if (selector === fromRoot.getAuthenticationLoading) {
                return Observable.of(false);
              }
              if (selector === fromRoot.getAuthentication) {
                return Observable.of(null);
              }
            });
          }
          }
        ]
      });
    });

    it('should test if route gets deactivated when user is not logged in', (done: DoneFn) => {
      inject([AuthGuard], (authGuard: AuthGuard) => {
        authGuard.canActivate(route, state).subscribe(canActivate => {
          expect(canActivate).toBeFalsy();
          done();
        });
      })();
    });

    it('should test if guard redirects to login page when user is not logged in', (done: DoneFn) => {
      inject([AuthGuard, Router], (authGuard: AuthGuard, router: Router) => {
        spyOn(router, 'navigate');
        authGuard.canActivate(route, state).subscribe(canActivate => {
          expect(router.navigate).toHaveBeenCalledWith(['/login']);
          done();
        });
      })();
    });
  });

});