using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Ichni.RhythmGame.Beatmap;
using SLSUtilities.WwiseAssistance;

namespace Ichni.RhythmGame
{
    public partial class NoteAudioSubmodule : SubmoduleBase
    {
        #region [暴露属性字段] Audio Settings
        public List<string> generalJudgeAudioList;
        public List<string> perfectAudioList;
        public List<string> goodAudioList;
        public List<string> badAudioList;
        public List<string> missAudioList;
        public List<string> holdStartAudioList;
        #endregion
        
        #region [运行时缓存变量] GC-Free Wwise IDs
        // --- 高性能无 GC 的 Wwise 预存 ID 数组 ---
        // 我们利用基础类型数组而不是 List 再次挤压最后一点遍历性能。
        private uint[] _generalJudgeAudioIds;
        private uint[] _perfectAudioIds;
        private uint[] _goodAudioIds;
        private uint[] _badAudioIds;
        private uint[] _missAudioIds;
        private uint[] _holdStartAudioIds;
        
        private NoteBase note => attachedGameElement as NoteBase;
        #endregion

        #region [生命周期] Initialization
        public NoteAudioSubmodule(NoteBase attachedGameElement, string defaultAudio) : base(attachedGameElement)
        {
            generalJudgeAudioList = new List<string>() { defaultAudio };
            perfectAudioList = new List<string>();
            goodAudioList = new List<string>();
            badAudioList = new List<string>();
            missAudioList = new List<string>();
            holdStartAudioList = new List<string>();

            if (!HaveSameSubmodule)
            {
                this.note.NoteAudioSubmodule = this;
            }
            
            InitializeAudio();
        }

        public NoteAudioSubmodule(NoteBase attachedGameElement, List<string> generalJudgeAudioList,
            List<string> perfectAudioList, List<string> goodAudioList, List<string> badAudioList,
            List<string> missAudioList, List<string> holdStartAudioList) : base(attachedGameElement)
        {
            this.generalJudgeAudioList = generalJudgeAudioList ?? new List<string>();
            this.perfectAudioList = perfectAudioList ?? new List<string>();
            this.goodAudioList = goodAudioList ?? new List<string>();
            this.badAudioList = badAudioList ?? new List<string>();
            this.missAudioList = missAudioList ?? new List<string>();
            this.holdStartAudioList = holdStartAudioList ?? new List<string>();

            if (!HaveSameSubmodule)
            {
                this.note.NoteAudioSubmodule = this;
            }

            InitializeAudio();
        }

        public void InitializeAudio()
        {
            // 通过反射，只在生成（或池化取出）时进行一次大写转换与常数查询，彻底摒弃字符串带来的运行时哈希。
            _generalJudgeAudioIds = ParseWwiseEventIDs(generalJudgeAudioList);
            _perfectAudioIds = ParseWwiseEventIDs(perfectAudioList);
            _goodAudioIds = ParseWwiseEventIDs(goodAudioList);
            _badAudioIds = ParseWwiseEventIDs(badAudioList);
            _missAudioIds = ParseWwiseEventIDs(missAudioList);
            _holdStartAudioIds = ParseWwiseEventIDs(holdStartAudioList);
        }
        
        private uint[] ParseWwiseEventIDs(List<string> audioNames)
        {
            if (audioNames == null || audioNames.Count == 0) return new uint[0];
            
            List<uint> ids = new List<uint>(audioNames.Count);
            Type eventsType = typeof(AK.EVENTS);
            
            for (int i = 0; i < audioNames.Count; i++)
            {
                if (string.IsNullOrEmpty(audioNames[i])) continue;
                
                string upperName = audioNames[i].ToUpper();
                FieldInfo field = eventsType.GetField(upperName, BindingFlags.Public | BindingFlags.Static);
                
                if (field != null)
                {
                    ids.Add((uint)field.GetValue(null));
                }
                else
                {
                    UnityEngine.Debug.LogWarning($"[Wwise 注意] 在 AK.EVENTS 中找不到对应的大写事件名称: {upperName}");
                }
            }
            return ids.ToArray();
        }
        #endregion
    }

    #region [播放控制] Audio Playback Methods
    public partial class NoteAudioSubmodule
    {
        public void PlayHoldStartAudio()
        {
            PlayAudioInternal(_holdStartAudioIds);
        }

        public void PlayGeneralJudgeAudios()
        {
            PlayAudioInternal(_generalJudgeAudioIds);
        }
        
        public void PlayNoteJudgeAudios(NoteBase.NoteJudgeType judgeType)
        {
            switch (judgeType)
            {
                case NoteBase.NoteJudgeType.Perfect: PlayAudioInternal(_perfectAudioIds); break;
                case NoteBase.NoteJudgeType.Good: PlayAudioInternal(_goodAudioIds); break;
                case NoteBase.NoteJudgeType.Bad: PlayAudioInternal(_badAudioIds); break;
                case NoteBase.NoteJudgeType.Miss: PlayAudioInternal(_missAudioIds); break;
            }
        }

        private void PlayAudioInternal(uint[] audioIds)
        {
            if (audioIds == null) return;
            for (int i = 0; i < audioIds.Length; i++)
            {
                // 最高性能播放：绕过 AudioManager 那些空物体创建，直接挂载到 AudioManager 的单例底层进行原生播放。
                AkSoundEngine.PostEvent(audioIds[i], AudioManager.Instance.gameObject);
            }
        }
    }
    #endregion

    #region [Beatmap] Executing and Reversing
    
    #endregion

}