frontend/src/app/_services/auth-guard.service.ts


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


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

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

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean | UrlTree | Observable<boolean | UrlTree> | Promise<boolean | UrlTree> {
    if (this.auth.isAuthenticated()) {
      return true;
    }
    this.router.navigate(['']);
    return false;
  }
}