import { Injectable } from '@angular/core';
import { CanActivate } from '@angular/router';
import { Store, select } from '@ngrx/store';
import { Observable } from 'rxjs';

import { selectIsAuthenticated } from './auth.selectors';
import { AppState } from '../core.state';
import { map, take } from 'rxjs/operators';

@Injectable({
  providedIn: 'root'
})
export class AuthGuardService implements CanActivate {
  constructor(private store: Store<AppState>) {}

  canActivate(): Observable<boolean> {
    return this.store.pipe(select(selectIsAuthenticated)).pipe(
      map((data: any) => !!data),
      take(1)
    );
  }
}