(function (root) {
  "use strict";

  const TRACKS = Object.freeze({
    village: "village-theme", forest: "forest-theme", ruins: "forest-theme",
    mountain: "mountain-theme", camp: "mountain-theme",
    fortressExterior: "fortress-theme", fortressInterior: "fortress-theme",
    bossArena: "boss-theme", chamber: "victory-theme"
  });

  function create(getState) {
    let scene = null;
    let ambience = null;
    let voice = null;
    let unlocked = false;
    let ducked = false;

    function attach(nextScene, region) {
      scene = nextScene;
      if (ambience) ambience.stop();
      const key = TRACKS[region] || "village-theme";
      ambience = scene.cache.audio.exists(key) ? scene.sound.add(key, { loop: true }) : null;
      apply();
    }

    function unlock() {
      unlocked = true;
      if (scene && scene.sound.locked && scene.sound.unlock) scene.sound.unlock();
      apply();
    }

    function apply() {
      if (!scene) return;
      const state = getState();
      const enabled = Boolean(unlocked && state && state.settings.soundEnabled);
      scene.sound.mute = !enabled;
      if (ambience) {
        ambience.setVolume(state ? (state.settings.master || 0) * (state.settings.music || 0) * (ducked ? 0.38 : 1) : 0);
        if (enabled && !ambience.isPlaying) ambience.play();
        if (!enabled && ambience.isPlaying) ambience.pause();
      }
    }

    function play(key, volume) {
      const state = getState();
      if (!scene || !unlocked || !state || !state.settings.soundEnabled || !scene.cache.audio.exists(key)) return;
      scene.sound.play(key, { volume: state.settings.master * state.settings.effects * (volume || 1) });
    }

    function playVoice(key) {
      const state = getState();
      stopVoice();
      if (!scene || !unlocked || !state || !state.settings.soundEnabled || !state.settings.narrationEnabled
          || !scene.cache.audio.exists(key)) return null;
      voice = scene.sound.add(key, { volume: state.settings.master * state.settings.voice });
      voice.once("complete", () => { voice = null; });
      voice.play();
      return voice;
    }

    function stopVoice() {
      if (voice) {
        voice.stop();
        voice.destroy();
      }
      voice = null;
    }

    function suspend() {
      if (ambience && ambience.isPlaying) ambience.pause();
    }

    function resume() {
      apply();
    }

    function duck(value) {
      ducked = Boolean(value);
      apply();
    }

    function stop() {
      stopVoice();
      if (ambience) ambience.stop();
      ambience = null;
      scene = null;
    }

    return Object.freeze({ attach, unlock, apply, play, playVoice, stopVoice, suspend, resume, duck, stop, isUnlocked: () => unlocked });
  }

  root.PrincessLimaAudio = Object.freeze({ create, TRACKS });
}(typeof globalThis !== "undefined" ? globalThis : this));