'use client';
/** Admin token (`X-CA-Admin-Token`) kept in localStorage; entered once on /admin. Never rendered back into the page. */
import { useEffect, useState } from 'react';

export const ADMIN_KEY = 'ca-admin-token';
const EVENT = 'ca-admin-change';

export function readAdminToken(): string | null {
  if (typeof window === 'undefined') return null;
  try {
    return window.localStorage.getItem(ADMIN_KEY) || null;
  } catch {
    return null;
  }
}
export function setAdminToken(t: string | null) {
  try {
    if (t) window.localStorage.setItem(ADMIN_KEY, t);
    else window.localStorage.removeItem(ADMIN_KEY);
  } catch {
    /* ignore */
  }
  window.dispatchEvent(new CustomEvent(EVENT));
}
/** `undefined` while unknown (before mount), `null` when absent. */
export function useAdminToken(): string | null | undefined {
  const [t, setT] = useState<string | null | undefined>(undefined);
  useEffect(() => {
    const read = () => setT(readAdminToken());
    read();
    window.addEventListener(EVENT, read);
    return () => window.removeEventListener(EVENT, read);
  }, []);
  return t;
}

export { ADMIN_MODULES } from './admin-modules';