import { Injectable } from '@angular/core';
import { ActivatedRouteSnapshot, CanActivate, Router, RouterStateSnapshot } from '@angular/router';

import { AuthService } from '@app/core/services';

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

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

  canActivate( route: ActivatedRouteSnapshot, state: RouterStateSnapshot ) {
    const currentUser = this.authenticationService.currentUserValue;

    if ( currentUser ) {
      // logged in so return true
      return true;
    }

    // not logged in so redirect to login page with the return url
    this.router.navigate( [ '/register' ], { queryParams: { returnUrl: state.url } } );

    return false;
}

}