Answers for "jwt token authourize guard in angular"

jwt token authourize guard in angular

import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs'; 
import { JWTTokenService } from './jwt-token.service';
import { LocalStorageService } from './storage.service';
import { LoginService } from './login.service';
 
@Injectable({
  providedIn: 'root'
})
export class AuthorizeGuard implements CanActivate {
  constructor(private loginService: LoginService,
              private authStorageService: LocalStorageService,
              private jwtService: JWTTokenService) {
  }
  canActivate(
    next: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable | Promise | boolean {
      if (this.jwtService.getUser()) {
          if (this.jwtService.isTokenExpired()) {
            // Should Redirect Sig-In Page
          } else {
            return true;
          }
      } else {
        return new Promise((resolve) => {
          this.loginService.signIncallBack().then((e) => {
             resolve(true);
          }).catch((e) => {
            // Should Redirect Sign-In Page
          });
        });
      }
  }
}

/*** code for routing***/
{
    path: 'app',
    component: AppComponent,
    canActivate: [AuthorizeGuard]
}