wcc1

@Injectable()
export class AuthGuardService implements CanActivate {

    constructor(
        private router: Router,
        private authService: AuthService
    ) {}

    canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean |
    Observable<boolean> | Promise<boolean> {
        return this.checkToken(route, state);
      }

      private checkToken(next: ActivatedRouteSnapshot,
        state: RouterStateSnapshot): boolean |
        Observable<boolean> | Promise<boolean> {
        if (this.authService.isAuthenticated()) {
            // check if token will expire soon
            if (this.authService.shouldIGetToken()) {
                console.log('Refresh token');
                return this.authService.refreshToken().pipe(mapTo(true));
            } else {
                console.log('Auth guard return true');
                return true;
            }
        }
        this.authService.clearToken ();
        this.router.navigate(['./login']);
        console.log('Auth guard return false');
        return false;

        }
}