using UnityEngine;
using Lean.Pool;
using AK.Wwise;
using SLSUtilities.LeanPoolAssistance; // 引用 Wwise

namespace SLSUtilities.WwiseAssistance
{
    /// <summary>
    /// 挂载在 AudioPoint 预制体上，负责管理单个音频实例的生命周期
    /// </summary>
    public partial class AudioPoint : PooledObject
    {
        public uint playingID = AkUnitySoundEngine.AK_INVALID_PLAYING_ID;
        public uint eventID = uint.MaxValue;

        /// <summary>
        /// 播放指定 ID 的事件
        /// </summary>
        public uint Play(uint eventID)
        {
            this.eventID = eventID;

            // PostEvent 并注册 EndOfEvent 回调
            playingID = AkUnitySoundEngine.PostEvent(eventID, gameObject, (uint)AkCallbackType.AK_EndOfEvent, OnEventFinished, null);

            // 安全检查：如果 ID 无效（比如Bank没加载），立即回收，防止对象泄漏
            if (playingID == AkUnitySoundEngine.AK_INVALID_PLAYING_ID)
            {
                Debug.LogWarning($"Wwise Event ID [{eventID}] 播放失败，正在回收对象。");
                LeanPool.Despawn(gameObject);
            }
            
            return playingID;
        }

        /// <summary>
        /// 手动停止播放（支持淡出），用于 Loop 音效
        /// </summary>
        /// <param name="fadeOutMs">淡出时间（毫秒）</param>
        public void Stop(int fadeOutMs = 0)
        {
            if (playingID != AkUnitySoundEngine.AK_INVALID_PLAYING_ID)
            {
                // 执行 Stop Action
                AkUnitySoundEngine.ExecuteActionOnPlayingID(AkActionOnEventType.AkActionOnEventType_Stop, playingID, fadeOutMs, AkCurveInterpolation.AkCurveInterpolation_Sine);
                // 注意：这里不调用 DespawnSelf。
                // Wwise 停止并淡出后，会触发 AK_EndOfEvent，由 OnEventFinished 负责回收。
            }
            else
            {
                // 如果没有在播放，直接回收
                LeanPool.Despawn(gameObject);
            }
        }
    
        public void Pause(int fadeOutMs = 0)
        {
            if (playingID != AkUnitySoundEngine.AK_INVALID_PLAYING_ID)
            {
                AkUnitySoundEngine.ExecuteActionOnPlayingID(
                    AkActionOnEventType.AkActionOnEventType_Pause, 
                    playingID, fadeOutMs, 
                    AkCurveInterpolation.AkCurveInterpolation_Linear
                );
            }
        }

        // 【新增】继续
        public void Resume(int fadeInMs = 0)
        {
            if (playingID != AkUnitySoundEngine.AK_INVALID_PLAYING_ID)
            {
                AkUnitySoundEngine.ExecuteActionOnPlayingID(
                    AkActionOnEventType.AkActionOnEventType_Resume, 
                    playingID, fadeInMs, 
                    AkCurveInterpolation.AkCurveInterpolation_Linear
                );
            }
        }
    }

    public partial class AudioPoint
    {
        /// <summary>
        /// Wwise 内部回调
        /// </summary>
        private void OnEventFinished(object in_cookie, AkCallbackType in_type, object in_info)
        {
            if (in_type == AkCallbackType.AK_EndOfEvent)
            {
                // 确保在 Unity 主线程且对象有效时回收
                // (Wwise 回调通常在主线程，但为了防止 Destroy 竞争条件，加个检查)
                if (this != null && gameObject.activeInHierarchy)
                {
                    LeanPool.Despawn(gameObject);
                }
            }
        }

        public override void OnDespawn()
        {
            playingID = AkUnitySoundEngine.AK_INVALID_PLAYING_ID;
            eventID = 0;
            base.OnDespawn();
        }
    }
}