using System;
using System.Collections.Generic;
using Spine.Unity;
using UnityEngine;
using UnityEngine.UI;



/// <summary>
/// 特效穿透阻挡器
/// 将此脚本挂在特效游戏对象上，可以防止特效穿透UI界面
/// </summary>
public class EffectPenetrationBlocker : MonoBehaviour
{
    [Tooltip("是否在UI层级下自动调整排序顺序")]
    public bool autoAdjustSorting = true;

    [Tooltip("特效渲染器，如果为空则自动获取")]
    public List<Renderer> effectRenderers = new List<Renderer>();

    [Tooltip("自定义排序顺序，仅在不自动调整时有效")]
    public int customSortingOrder = 0;

    [Tooltip("自定义排序层，为空则使用默认UI层")]
    public string customSortingLayer = "UI";

    [Tooltip("特效所属的Canvas，如果为空则查找父级Canvas")]
    public Canvas parentCanvas;

    [Tooltip("特效在Canvas中的排序偏移量")]
    public int sortingOrderOffset = 1;

    public int canvasSortingOrder = 0;

    public int renderQueue = 3000;//默认值

    public Action<string, int> onSortingChanged;

    private void Awake()
    {
        transform.GetComponentsInChildren(true, effectRenderers);

        // 如果没有指定渲染器，则自动获取
        if (effectRenderers == null || effectRenderers.Count == 0)
        {
            transform.GetComponentsInChildren<Renderer>(true, effectRenderers);
        }

        // 查找父级Canvas
        if (parentCanvas == null)
        {
            parentCanvas = GetComponentInParent<Canvas>();
        }

        if (autoAdjustSorting)
        {
            UpdateSortingOrder();
        }
        else
        {
            // 使用自定义排序
            ApplySortingSettings(customSortingOrder, customSortingLayer);
        }
    }

    private void OnEnable()
    {
        if (autoAdjustSorting)
        {
            UpdateSortingOrder();
        }
    }

    /// <summary>
    /// 更新排序顺序，确保特效显示在当前UI界面上方
    /// </summary>
    public void UpdateSortingOrder()
    {
        if (!autoAdjustSorting) return;

        // 获取父级Canvas的排序顺序
        if (parentCanvas != null)
        {
            canvasSortingOrder = parentCanvas.sortingOrder;
        }
        else
        {
            // 如果没有找到父级Canvas，则使用默认值
            canvasSortingOrder = 0;
        }

        // 将特效的排序顺序设置为Canvas排序顺序加上偏移量
        ApplySortingSettings(canvasSortingOrder + sortingOrderOffset, customSortingLayer);
    }

    /// <summary>
    /// 应用排序设置到所有渲染器和粒子系统
    /// </summary>
    private void ApplySortingSettings(int sortingOrder, string sortingLayer)
    {
        // const int overlayRQ = 4000;

        // 应用到渲染器
        foreach (Renderer renderer in effectRenderers)
        {
            if (renderer != null)
            {
                renderer.sortingOrder = sortingOrder;
                renderer.material.renderQueue = renderQueue; // 设置渲染队列
                // renderer.material.renderQueue = overlayRQ;
                if (!string.IsNullOrEmpty(sortingLayer))
                {
                    renderer.sortingLayerName = sortingLayer;
                }
            }
        }

        onSortingChanged?.Invoke(sortingLayer, sortingOrder);
    }

    /// <summary>
    /// 手动设置排序顺序
    /// </summary>
    public void SetSortingOrder(int sortingOrder, string sortingLayer = null)
    {
        customSortingOrder = sortingOrder;
        if (!string.IsNullOrEmpty(sortingLayer))
        {
            customSortingLayer = sortingLayer;
        }

        autoAdjustSorting = false;
        ApplySortingSettings(customSortingOrder, customSortingLayer);
    }

    /// <summary>
    /// 设置父级Canvas
    /// </summary>
    public void SetParentCanvas(Canvas canvas)
    {
        parentCanvas = canvas;
        if (autoAdjustSorting)
        {
            this.DelayFrame(UpdateSortingOrder);
        }
    }

    /// <summary>
    /// 应用遮罩区域（RectTransform），可用于裁剪特效
    /// </summary>
    public void PerformMask(RectTransform maskRect)
    {
        // 这里只是示例，实际可根据你的Shader或特效材质做裁剪
        foreach (Renderer renderer in effectRenderers)
        {
            if (renderer != null && renderer.material != null && maskRect != null)
            {
                Vector3[] corners = new Vector3[4];
                maskRect.GetWorldCorners(corners);
                Vector4 clipRect = new Vector4(corners[0].x, corners[0].y, corners[2].x, corners[2].y);
                renderer.material.SetVector("_ClipRect", clipRect);
                renderer.material.SetFloat("_UseClipRect", 1);
            }
            else if (renderer != null && renderer.material != null)
            {
                renderer.material.SetFloat("_UseClipRect", 0);
            }
        }
    }


#if UNITY_EDITOR
    [ContextMenu("Apply")]
    public void Apply()
    {
        UpdateSortingOrder();
    }
#endif
}