import { inject } from '@angular/core';
import { CanActivateFn, Router } from '@angular/router';
import { jwtDecode } from 'jwt-decode';

export const authGuard: CanActivateFn = (route, state) => {
  const router = inject(Router);
  const accessToken = localStorage.getItem('access_token');

  if (accessToken) {
    try {
      const decodedToken: any = jwtDecode(accessToken);
      const currentTime = Date.now() / 1000;

      if (decodedToken.exp < currentTime) {
        // Token expired
        localStorage.removeItem('access_token');
        router.navigate(['/login']);
        return false;
      }

      return true;
    } catch (error) {
      // Error decoding token
      localStorage.removeItem('access_token');
      router.navigate(['/login']);
      return false;
    }
  } else {
    router.navigate(['/login']);
    return false;
  }
};