using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ViewManager2
{
    private class ViewCacheInfo
    {
        public string fullPath;
        public GameObject gameObject;
    }

    private static List<ViewCacheInfo> _ViewCacheInfos = new();

    private static GameObject currentViewParent;

    public static void ShowView(string path)
    {
        InstantiateView(path);
    }

    public static GameObject getGameObjectAndShowView(string path)
    {
        GameObject o = InstantiateView(path);
        return o;
    }

    static GameObject InstantiateView(string path)
    {
        //查找创造的ViewMgr 第一个层级作为ViewManager2的父节点
        if (currentViewParent == null)
        {
            currentViewParent = ViewMgr.Instance.transform.Find("0").gameObject;
        }
        string fullPath = "SmartBow/Prefabs/Views/" + path;
        _DestroyExistViews(fullPath);
        GameObject o = Object.Instantiate(Resources.Load<GameObject>(fullPath), currentViewParent.transform);
        // 根据条件是否设置原来的sorting
        if (path == Path_GameResultView)
        {
            o.GetComponent<Canvas>().overrideSorting = true;
        }
        // 检查并移除 Canvas Scaler 组件
        //UnityEngine.UI.CanvasScaler canvasScaler = o.GetComponent<UnityEngine.UI.CanvasScaler>();
        //if (canvasScaler != null)
        //{
        //    Object.Destroy(canvasScaler);
        //}
        // 返回删除CanvasScaler对象
        // 设置CanvasScaler RectTransform 的属性
        RectTransform rectTransform = RemoveCanvasScaler(o.transform);

        //RectTransform rectTransform = o.GetComponent<RectTransform>();
        //if (rectTransform != null)
        //{
        //    rectTransform.localScale = Vector3.one; // 重置缩放
        //    rectTransform.sizeDelta = ((RectTransform)currentViewParent.transform).rect.size; // 设置大小
        //    rectTransform.anchoredPosition = Vector2.zero; // 重置位置
        //}
        // 设置 RectTransform 全屏适应父级
        if (rectTransform != null)
        {
            if (rectTransform == o.GetComponent<RectTransform>())
            {
                rectTransform.anchorMin = Vector2.zero;      // 左下角对齐父级
                rectTransform.anchorMax = Vector2.one;       // 右上角对齐父级
                rectTransform.offsetMin = Vector2.zero;      // 移除左下角偏移
                rectTransform.offsetMax = Vector2.zero;      // 移除右上角偏移
                rectTransform.localScale = Vector3.one;      // 确保缩放为 1
            }
            else {
                rectTransform.pivot = new Vector2(0.5f, 0.5f);
                rectTransform.localScale = Vector3.one;      // 确保缩放为 1
                rectTransform.sizeDelta = ((RectTransform)currentViewParent.transform).rect.size; // 设置大小
                rectTransform.anchoredPosition = Vector2.zero; // 重置位置
            }
        }
        ViewCacheInfo viewCacheInfo = new ViewCacheInfo();
        viewCacheInfo.fullPath = fullPath;
        viewCacheInfo.gameObject = o;
        _ViewCacheInfos.Add(viewCacheInfo);
        return o;
    }

    static RectTransform RemoveCanvasScaler(Transform parent)
    {
        // 检查自身是否有 Canvas 组件
        Canvas canvas = parent.GetComponent<Canvas>();
        if (canvas != null)
        {
            // 检查并移除 Canvas Scaler 组件
            UnityEngine.UI.CanvasScaler canvasScaler = parent.GetComponent<UnityEngine.UI.CanvasScaler>();
            if (canvasScaler != null)
            {
                Object.Destroy(canvasScaler);
                return parent.GetComponent<RectTransform>(); // 返回删除 CanvasScaler 的 RectTransform
            }
        }
        else
        {
            // 如果没有 Canvas，轮询子物体
            foreach (Transform child in parent)
            {
                RectTransform result = RemoveCanvasScaler(child);
                if (result != null) // 如果找到了被删除的 RectTransform，则返回
                {
                    return result;
                }
            }
        }

        return null; // 如果没有找到，则返回 null
    }

    public static void HideView(string path)
    {
        string fullPath = "SmartBow/Prefabs/Views/" + path;
        _DestroyExistViews(fullPath);
    }

    private static void _DestroyExistViews(string fullPath)
    {
        _ViewCacheInfos.FindAll(e => e.fullPath == fullPath).ForEach(e =>
        {
            if (e.gameObject) Object.Destroy(e.gameObject);
        });
        _ViewCacheInfos.RemoveAll(e => e.fullPath == fullPath);
    }

    public static void RemoveView(string path)
    {
        string fullPath = "SmartBow/Prefabs/Views/" + path;
        _RemoveView(fullPath);
    }
    //仅移除 _ViewCacheInfos
    private static void _RemoveView(string fullPath)
    {
        _ViewCacheInfos.RemoveAll(e => e.fullPath == fullPath);
    }

    public const string Path_SettingsView = "Home/SettingsView";
    public const string Path_SocialView = "Home/SocialView";
    public const string Path_PersonalView = "Home/PersonalView";
    public const string Path_RankingView = "Home/RankingView";
    public const string Path_ConnectGuidanceView = "Home/ConnectGuidanceView";
    public const string Path_GyrGuidanceView = "Home/GyrGuidanceView";
    public const string Path_MagGuidanceView = "Home/MagGuidanceView";

    public const string Path_InfraredView = "Home/InfraredView";
    public const string Path_InfraredScreenPositioningView = "Home/InfraredScreenPositioningView";

    public const string Path_HomeViewTip = "Home/HomeView_Tip";
    public const string Path_GameResultView = "GameResultView";

}