auth.guard.ts

auth.guard.ts

import { Injectable } from '@angular/core';
import { Router, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthenticationService } from '../_services/authentication/authentication.service';

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

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

  canActivate(
    route: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean {
      const user = this.authenticationService.userValue;
      if (user) {
        return true;
      }

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


}