/*
 * Licensed 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 { CanActivate, Router } from '@angular/router';
import { of, Observable } from 'rxjs';
import { catchError, map } from 'rxjs/operators';

import { TicketService } from '@zeppelin/services';

@Injectable({
  providedIn: 'root'
})
export class LoginGuard implements CanActivate {
  constructor(
    private ticketService: TicketService,
    private router: Router
  ) {}

  canActivate(): Observable<boolean> {
    return this.ticketService.isAuthenticated().pipe(
      map(() => {
        this.router.navigate(['/'], { replaceUrl: true });
        return false;
      }),
      catchError(() => of(true))
    );
  }
}
