using Cysharp.Threading.Tasks;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;

public class UI_PPTForPracticePanel : BasePanel
{
    public GameObject pptImagePrefab;
    public RectTransform content;
    public ScrollRect scrollRect;

    //public ScrollRect leftscrollRect;

    public UI_TipsForPracticePanelPPTNameItem pptNameItem;
    public RectTransform Left_content;

    public CanvasGroup canvasGroup;

    public string pptFolderName;

    public UI_SelectDevicePanel UI_SelectDevice;

    protected override void Awake()
    {
        canvasGroup.alpha = 1f;

        pptFolderName = Application.streamingAssetsPath + "/PPT";
        PPTManager.Instance.PPTFiles(pptFolderName);

        string[] ppts = PPTManager.Instance.PPTName();
        // 1. 提取文件名并解析数字前缀
        var sortedItems = ppts
            .Select(path => new
            {
                Path = path,
                Name = PPTManager.Instance.PathName(path),
                Order = PPTManager.Instance.ExtractLeadingNumber(PPTManager.Instance.PathName(path)) // 提取数字
            })
            .OrderBy(item => item.Order) // 按数字排序
            .ToList();
        // 2. 生成排序后的按钮
        foreach (var item in sortedItems)
        {
            var buttonItem = Instantiate(pptNameItem, Left_content);
            buttonItem.Init(item.Name);
            buttonItem.PPTName_Tog.gameObject.name = item.Name;
            Debug.Log($"已创建按钮: {item.Name} (排序键: {item.Order})");
        }
        base.Awake();
        //pptConfig = JsonManager.LoadData<PPTConfig>("pptConfig");
        if (ppts == null || ppts.Length == 0)
        {
            Debug.LogError("PPT路径数组未初始化或为空");
            return;
        }
    }

    void Start()
    {
        // 监听单页加载完成事件
        PPTManager.Instance.OnSinglePageLoaded += texture => {
            // 立即显示当前加载的页面
            DisplaySinglePage(texture);
        };
    }

    public override void ShowMe()
    {
        base.ShowMe();
        string pptBtnName = Left_content.GetChild(0).GetComponent<UI_TipsForPracticePanelPPTNameItem>().PPTName_Tog.gameObject.name;
        OnClick(pptBtnName);
        //await ToolManager.CanvasFadeIn(canvasGroup, 0.5f);
    }
    public override void HideMe()
    {
        base.HideMe();
        //await ToolManager.CanvasFadeOut(canvasGroup, 0.5f);
    }

    protected override void OnClick(string btnName)
    {
        Debug.Log(btnName);
        switch (btnName)
        {
            case "retrun_Btn":
                if (GameManager.RunModelMgr.SceneType != E_SceneType.Site)
                {
                    GameManager.UIMgr.ShowPanel<UI_SelectModePanel>(E_UI_Layer.System, (panel) =>
                    {
                        GameManager.UIMgr.ShowPanel<UI_BGPanel>(E_UI_Layer.Bot, (panel) =>
                        {
                            Debug.Log("退出UI_PPTForPracticePanel");
                            GameManager.UIMgr.HidePanel<UI_PPTForPracticePanel>();
                            //GameManager.UIMgr.HidePanel<UI_MainTitlePanel>();
                        });
                    });
                }
                else
                {
                    GameManager.UIMgr.HidePanel<UI_PPTForPracticePanel>();
                    if (GameManager.UIMgr.GetPanel<UI_BGPanel>() != null)
                    {
                        GameManager.UIMgr.HidePanel<UI_BGPanel>();
                    }
                }
                //Bootstrap.Instance.uiManager.HidePanel<UI_TipsForPracticePanel>();
                break;
            case "EnterPracticalTrainingBtn":

                //UI_SelectDevice.Init();
                GameManager.RunModelMgr.schemeID = 2002;
                GameManager.ProcessMgr.Init(GameManager.RunModelMgr.schemeID);
                GameManager.UIMgr.ShowPanel<UI_LoadingPanel>(E_UI_Layer.System, (panel) =>
                {
                    panel.Init();
                    GameManager.EventMgr.EventTrigger<float>(Enum_EventType.UpdateProgress, 0.1f);
                    GameManager.ScenesMgr.LoadSceneAsyn($"{GameManager.Instance.systemId}_2002_{GameManager.Instance.startSceneName}", () =>
                    {
                        GameManager.UIMgr.HidePanel<UI_SelectDevicePanel>();
                        GameManager.UIMgr.HidePanel<UI_BGPanel>();
                        GameManager.UIMgr.HidePanel<UI_PPTForPracticePanel>();
                        GameManager.EventMgr.EventTrigger<float>(Enum_EventType.UpdateProgress, 0.9f);

                    });
                });
                Debug.Log("进入实训");

                break;

        }
        //await ToolManager.RefreshScrollView(content, scrollRect);
    }
    protected override void OnChangeToggle(string togglePath, bool isOn)
    {
        base.OnChangeToggle(togglePath, isOn);
        switch (togglePath)
        {
            default:
                if (isOn)
                {
                    foreach (Transform child in content)//清理之前的图片
                    {
                        DestroyImmediate(child.gameObject);
                    }
                    // 启动协程异步加载PPT
                    StartCoroutine(LoadPPTAsync(togglePath, textures =>
                    {
                        if (textures != null)
                        {
                            DisplayPPT(textures);
                        }
                    }));
                }
                break;
        }
    }

    // 添加异步加载方法
    private IEnumerator LoadPPTAsync(string pptName, Action<List<Texture2D>> callback)
    {
        // 调用PPTManager的异步加载方法
        yield return PPTManager.Instance.LoadPPTAsync(pptName, callback);
    }


    private void DisplayPPT(List<Texture2D> textures)
    {
        foreach (Transform child in content)
        {
            Destroy(child.gameObject);
        }
        Debug.LogError("texturesCount:" + textures.Count);
        foreach (var texture in textures)
        {
            RawImage rawImage = pptImagePrefab.GetComponent<RawImage>();
            RawImage image = Instantiate(rawImage, content);
            image.texture = texture;
            image.rectTransform.sizeDelta = new Vector2(1608, 940);
        }
    }

    private void DisplaySinglePage(Texture2D texture)
    {
        RawImage rawImage = pptImagePrefab.GetComponent<RawImage>();
        RawImage image = Instantiate(rawImage, content);
        image.texture = texture;
        image.rectTransform.sizeDelta = new Vector2(1608, 940);
        //foreach (Transform child in content)
        //{
        //    DestroyImmediate(child.gameObject);
        //}
    }
}