import { inject, PLATFORM_ID } from '@angular/core';
import { isPlatformBrowser } from '@angular/common';
import { CanActivateFn, Router } from '@angular/router';
import { AuthService } from '../auth/auth.service';

export const authGuard: CanActivateFn = (route, state) => {
  const platformId = inject(PLATFORM_ID);

  // During SSR there is no localStorage — skip the guard and let the client enforce auth after hydration
  if (!isPlatformBrowser(platformId)) {
    return true;
  }

  const auth = inject(AuthService);
  const router = inject(Router);

  return auth.currentToken
    ? true
    : router.parseUrl(`login?returnUrl=${state.url}`);
};