using UnityEngine;

/// <summary>
/// 统一音频管理器——挂在 [Managers] 上，管理所有背景音乐/音效/语音。
/// </summary>
public class AudioManager : MonoBehaviour
{
    public static AudioManager I { get; private set; }

    [Header("背景音乐")]
    [SerializeField] private AudioClip _homeBg;
    [SerializeField] private AudioClip _experimentBg;
    [Range(0,1)] public float BgVolume = 0.5f;

    [Header("音效")]
    [SerializeField] private AudioClip _basketballSfx;
    [SerializeField] private AudioClip _manCallSfx;

    private AudioSource _bgSource;
    private AudioSource _sfxSource;
    private AudioSource _voiceSource;

    void Awake()
    {
        I = this;
        _bgSource = gameObject.AddComponent<AudioSource>();
        _bgSource.loop = true;
        _bgSource.playOnAwake = false;
        _bgSource.spatialBlend = 0f;

        _sfxSource = gameObject.AddComponent<AudioSource>();
        _sfxSource.playOnAwake = false;
        _sfxSource.spatialBlend = 0f;

        _voiceSource = gameObject.AddComponent<AudioSource>();
        _voiceSource.playOnAwake = false;
        _voiceSource.spatialBlend = 0f;

#if UNITY_EDITOR
        if (_homeBg == null) _homeBg = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/homeBackgroundMusic.mp3");
        if (_experimentBg == null) _experimentBg = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/backgroundMusic.mp3");
        if (_basketballSfx == null) _basketballSfx = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/start/basketballSound.wav");
        if (_manCallSfx == null) _manCallSfx = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/start/mancall.wav");
#endif
        Debug.Log($"[AudioManager] 就绪 homeBg={_homeBg!=null} expBg={_experimentBg!=null} sfx={_basketballSfx!=null}/{_manCallSfx!=null}");
    }

    // ────── 背景音乐 ──────
    public void PlayHomeBg()
    {
        if (_homeBg == null) return;
        _bgSource.clip = _homeBg;
        _bgSource.volume = BgVolume;
        _bgSource.Play();
        Debug.Log($"[AudioManager] 首页bg isPlaying={_bgSource.isPlaying}");
    }

    public void PlayExperimentBg()
    {
        if (_experimentBg == null) return;
        _bgSource.clip = _experimentBg;
        _bgSource.volume = BgVolume;
        _bgSource.Play();
        Debug.Log($"[AudioManager] 实验bg isPlaying={_bgSource.isPlaying}");
    }

    public void StopBgMusic()
    {
        _bgSource.Stop();
        Debug.Log("[AudioManager] 停止bg");
    }

    // ────── 音效（可打断） ──────
    public void PlaySfx(AudioClip clip)
    {
        if (clip == null) return;
        _sfxSource.Stop();
        _sfxSource.clip = clip;
        _sfxSource.Play();
    }

    public void StopSfx() { _sfxSource.Stop(); }

    public void PlayBasketballSfx() => PlaySfx(_basketballSfx);
    public void PlayManCallSfx() => PlaySfx(_manCallSfx);

    // ────── 语音（可打断） ──────
    public void PlayVoice(AudioClip clip)
    {
        if (clip == null) return;
        _voiceSource.Stop();
        _voiceSource.clip = clip;
        _voiceSource.Play();
        Debug.Log($"[AudioManager] 播放语音: {clip.name}");
    }

    
    public void StopVoice() { _voiceSource.Stop(); }

    public void SwitchToCamera3Smooth()
    {
        StartCoroutine(Camera3SwitchRoutine());
    }

    System.Collections.IEnumerator Camera3SwitchRoutine()
    {
        var black = GameObject.Find("BlackScreenPanel");
        var blackImg = black != null ? black.GetComponent<UnityEngine.UI.Image>() : null;
        float duration = 0.8f;

        // 渐入黑
        if (black != null && blackImg != null)
        {
            black.SetActive(true);
            for (float t = 0f; t < duration; t += Time.deltaTime)
            {
                blackImg.color = new Color(0, 0, 0, t / duration);
                yield return null;
            }
            blackImg.color = Color.black;
        }

        // 切换摄像机
        var cam2 = GameObject.Find("camera2");
        var cam3 = GameObject.Find("camera3");
        if (cam2 != null) { var c = cam2.GetComponent<Camera>(); if (c != null) c.enabled = false; }
        if (cam3 != null) { var c = cam3.GetComponent<Camera>(); if (c != null) c.enabled = true; }
        Debug.Log("[AudioManager] camera2→camera3 平滑切换完成");

        yield return new WaitForSeconds(0.2f);

        // 渐出黑
        if (black != null && blackImg != null)
        {
            for (float t = 0f; t < duration; t += Time.deltaTime)
            {
                blackImg.color = new Color(0, 0, 0, 1f - t / duration);
                yield return null;
            }
            blackImg.color = new Color(0, 0, 0, 0);
            black.SetActive(false);
        }
    }
}