import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, UrlTree, Router } from '@angular/router';
import { Observable } from 'rxjs';
import {AuthService} from '@app/auth/services/auth.service';

@Injectable({
  providedIn: 'root'
})

export class AuthGuard implements CanActivate {

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

  canActivate(
    route: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {

    const currentUser = this.authService.currentUserValue;
    if (currentUser) {
      return true;
    }

    this.router.navigate(['login'], { queryParams: { returnUrl: state.url } });
    return false;
  }
}