src/app/core/guards/auth.guard.ts
import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, UrlTree, Router } 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(
next: ActivatedRouteSnapshot,
state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
const currentUser = this.authenticationService.currentUserValue;
if (currentUser) {
// authorised so return true
return true;
}
// not logged in so redirect to login page with the return url
this.router.navigate(['/login'], { queryParams: { returnUrl: state.url } });
return false;
}
}