using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Sirenix.OdinInspector;
using SLSUtilities.General;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

namespace Ichni
{
    public class PostProcessingManager : Singleton<PostProcessingManager>
    {
        public static Volume GlobalVolume => instance._globalVolume;
        
        [ShowInInspector]
        private Volume _globalVolume;

        protected override void Awake()
        {
            base.Awake();
            //FindAndCacheFeatureWithReflection();
        }

        private void OnDisable()
        {
            //FindAndCacheFeatureWithReflection();
        }

        private void FindAndCacheFeatureWithReflection()
        {
            var pipelineAsset = GraphicsSettings.currentRenderPipeline as UniversalRenderPipelineAsset;
            if (pipelineAsset == null)
            {
                Debug.LogError("当前渲染管线不是 UniversalRenderPipelineAsset。");
                return;
            }

            // 2. 使用反射来获取内部的 m_RendererDataList 字段
            FieldInfo rendererDataListField =
                typeof(UniversalRenderPipelineAsset).GetField("m_RendererDataList", BindingFlags.NonPublic | BindingFlags.Instance);
            if (rendererDataListField == null)
            {
                Debug.LogError("在 UniversalRenderPipelineAsset 中无法通过反射找到 'm_RendererDataList' 字段。API可能已在你的URP版本中更改。");
                return;
            }

            var rendererDataList = rendererDataListField.GetValue(pipelineAsset) as ScriptableRendererData[];
            if (rendererDataList == null)
            {
                Debug.LogError("获取渲染器数据列表失败。");
                return;
            }
        }
    }
}