using SK.Framework;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class UIToolDragView : UIView
{

    public Transform categoryParent;
    public Transform toolParent;

    public GameObject categoryTogglePrefab;
    public GameObject toolItemPrefab;

    public Transform dragLayer;
    private string rootPath;
    private string currentModel;

    void Awake()
    {
        rootPath = Path.Combine(Application.dataPath, "Resources/UITool");
        Init("模型");
        
    }

    /// <summary>
    /// 外部调用：设置模型并生成工具类 Toggle
    /// </summary>
    public void Init(string modelName)
    {
        currentModel = modelName;
        CreateCategoryToggles();
    }

    /// <summary>
    /// 生成工具类 Toggle
    /// </summary>
    void CreateCategoryToggles()
    {
        foreach (Transform c in categoryParent)
            Destroy(c.gameObject);

        string modelPath = Path.Combine(rootPath, currentModel);
        if (!Directory.Exists(modelPath))
        {
            Debug.LogError($"模型目录不存在: {currentModel}");
            return;
        }

        var classDirs = Directory.GetDirectories(modelPath);

        Toggle firstToggle = null;

        foreach (var dir in classDirs)
        {
            string toolClassName = Path.GetFileName(dir);

            Toggle toggle = Instantiate(categoryTogglePrefab, categoryParent).GetComponent<Toggle>();
            toggle.GetComponentInChildren<TextMeshProUGUI>().text = toolClassName;
            toggle.group = categoryParent.GetComponent<ToggleGroup>();
            toggle.onValueChanged.AddListener(isOn =>
            {
                if (isOn)
                    LoadTools(toolClassName);
            });

            if (firstToggle == null)
                firstToggle = toggle;
        }

        // 默认选中第一个
        if (firstToggle != null)
            firstToggle.isOn = true;
    }

    /// <summary>
    /// 加载指定工具类下的工具
    /// </summary>
    void LoadTools(string toolClass)
    {
        foreach (Transform t in toolParent)
            Destroy(t.gameObject);

        Debug.Log("加载工具");
        string toolPath = Path.Combine(rootPath, currentModel, toolClass);
        Debug.Log(toolPath);
        var pngFiles = Directory.GetFiles(toolPath, "*.png");
        Debug.Log(pngFiles.Length);
        foreach (var png in pngFiles)
        {
            Debug.Log("加载工具1");
            string toolName = Path.GetFileNameWithoutExtension(png);
            string resPath = $"UITool/{currentModel}/{toolClass}/{toolName}";
            Debug.Log($"加载工具{resPath}");
            Texture2D tex = Resources.Load<Texture2D>(resPath);
            Sprite sprite = Sprite.Create(
                tex,
                new Rect(0, 0, tex.width, tex.height),
                new Vector2(0.5f, 0.5f)
            );
            //Sprite sprite = Resources.Load<Sprite>(resPath);
            if (sprite == null) continue;

            GameObject item = Instantiate(toolItemPrefab, toolParent);
            item.GetComponent<Image>().sprite = sprite;
            item.transform.Find("name").GetComponent<TextMeshProUGUI>().text = toolName;

            ToolItemData data = item.AddComponent<ToolItemData>();
            data.category = currentModel;
            data.group = toolClass;
            data.toolName = toolName;

            item.GetComponent<ToolDragSpawner>().dragLayer=dragLayer;
        }
    }
}