cmail\src\app\guards\auth2.guard.ts

auth2.guard.ts

import { Injectable } from '@angular/core';
import { CanActivate, Router } from '@angular/router';
import { catchError, map } from 'rxjs/operators';
import { LoginService } from '../services/login.service';

@Injectable({
  providedIn: 'root'
})
export class Auth2Guard implements CanActivate {

  constructor(private roteador: Router, private loginService: LoginService) { }

  canActivate() {
    return this.loginService.validaToken()
      .pipe(
        map(response => response.ok),
        catchError(() => {
          localStorage.removeItem('cmail-token');
          this.roteador.navigate(['login']);
          return [false];
        })
      );
  }

}