/**
 * Spielt einen kurzen "Bereit"-Sound (Airplane Ding-Dong) wenn das Mikrofon
 * nach Wake-Word-Erkennung wirklich offen ist. Datei liegt in
 * android/app/src/main/res/raw/wake_ready_sound.mp3 — wird ueber Android's
 * Resource-System per react-native-sound abgespielt.
 *
 * Toggle: AsyncStorage-Key 'aria_wake_ready_sound_enabled' (default true).
 */

import Sound from 'react-native-sound';
import AsyncStorage from '@react-native-async-storage/async-storage';

export const WAKE_READY_SOUND_STORAGE_KEY = 'aria_wake_ready_sound_enabled';

Sound.setCategory('Playback', false);

let cachedSound: Sound | null = null;
let cachedFailed = false;

function getSound(): Promise<Sound | null> {
  if (cachedFailed) return Promise.resolve(null);
  if (cachedSound) return Promise.resolve(cachedSound);
  return new Promise(resolve => {
    const s = new Sound('wake_ready_sound', Sound.MAIN_BUNDLE, (err) => {
      if (err) {
        console.warn('[WakeReadySound] Konnte nicht geladen werden:', err);
        cachedFailed = true;
        resolve(null);
        return;
      }
      cachedSound = s;
      resolve(s);
    });
  });
}

/** True wenn der User den "Bereit"-Sound aktiviert hat. Default: true. */
export async function isWakeReadySoundEnabled(): Promise<boolean> {
  try {
    const raw = await AsyncStorage.getItem(WAKE_READY_SOUND_STORAGE_KEY);
    if (raw === null) return true;  // Default an
    return raw === 'true';
  } catch {
    return true;
  }
}

export async function setWakeReadySoundEnabled(enabled: boolean): Promise<void> {
  try {
    await AsyncStorage.setItem(WAKE_READY_SOUND_STORAGE_KEY, String(enabled));
  } catch {}
}

/** Spielt den Bereit-Sound einmal ab — non-blocking. Wenn der User ihn
 *  in den Settings deaktiviert hat oder die Datei nicht ladbar ist,
 *  passiert einfach nichts. */
export async function playWakeReadySound(): Promise<void> {
  if (!(await isWakeReadySoundEnabled())) return;
  const s = await getSound();
  if (!s) return;
  try {
    s.stop(() => {
      s.setCurrentTime(0);
      s.play((success) => {
        if (!success) console.warn('[WakeReadySound] Wiedergabe fehlgeschlagen');
      });
    });
  } catch (e) {
    console.warn('[WakeReadySound] play() Exception:', e);
  }
}