import { useEffect, useState } from 'react';

// Voice UI is gated on the `voiceEnabled` UI preference (toggled in Quick Settings /
// the Settings modal). This is a lightweight read-only view of that preference so the
// mic/speak controls can hide themselves, kept in sync via the same events
// useUiPreferences emits. No server probe.
const STORAGE_KEY = 'uiPreferences';
const SYNC_EVENT = 'ui-preferences:sync';

function readVoiceEnabled(): boolean {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    if (!raw) return false;
    const parsed = JSON.parse(raw);
    return parsed?.voiceEnabled === true || parsed?.voiceEnabled === 'true';
  } catch {
    return false;
  }
}

export function useVoiceAvailable(): boolean {
  const [enabled, setEnabled] = useState<boolean>(() =>
    typeof window === 'undefined' ? false : readVoiceEnabled(),
  );

  useEffect(() => {
    const update = () => setEnabled(readVoiceEnabled());
    window.addEventListener('storage', update);
    window.addEventListener(SYNC_EVENT, update as EventListener);
    return () => {
      window.removeEventListener('storage', update);
      window.removeEventListener(SYNC_EVENT, update as EventListener);
    };
  }, []);

  return enabled;
}