using UnityEngine;
using UnityEngine.UI;

/// <summary>
/// 快速Canvas层级测试工具
/// 可以直接添加到场景中进行快速测试
/// </summary>
public class QuickCanvasTest : MonoBehaviour
{
    [Header("快速测试")]
    [SerializeField] private Button testButton;
    [SerializeField] private Text statusText;
    
    private int testCanvasCount = 0;
    private MainPanel mainPanel;
    
    void Start()
    {
        mainPanel = FindObjectOfType<MainPanel>();
        
        if (testButton == null)
        {
            CreateTestButton();
        }
        
        if (testButton != null)
        {
            testButton.onClick.AddListener(QuickTest);
        }
        
        UpdateStatus();
    }
    
    void CreateTestButton()
    {
        // 创建测试按钮
        GameObject buttonObj = new GameObject("QuickTestButton");
        buttonObj.transform.SetParent(transform, false);
        
        testButton = buttonObj.AddComponent<Button>();
        Image buttonImg = buttonObj.AddComponent<Image>();
        buttonImg.color = Color.cyan;
        
        RectTransform buttonRect = buttonObj.GetComponent<RectTransform>();
        buttonRect.sizeDelta = new Vector2(200, 50);
        buttonRect.anchoredPosition = new Vector2(0, 100);
        
        // 添加按钮文字
        GameObject textObj = new GameObject("Text");
        textObj.transform.SetParent(buttonObj.transform, false);
        
        Text buttonText = textObj.AddComponent<Text>();
        buttonText.text = "快速测试覆盖";
        buttonText.font = Resources.GetBuiltinResource<Font>("Arial.ttf");
        buttonText.fontSize = 16;
        buttonText.color = Color.black;
        buttonText.alignment = TextAnchor.MiddleCenter;
        
        RectTransform textRect = textObj.GetComponent<RectTransform>();
        textRect.anchorMin = Vector2.zero;
        textRect.anchorMax = Vector2.one;
        textRect.offsetMin = Vector2.zero;
        textRect.offsetMax = Vector2.zero;
    }
    
    public void QuickTest()
    {
        testCanvasCount++;
        
        // 创建一个简单的覆盖Canvas
        GameObject overlayObj = new GameObject($"QuickTest_{testCanvasCount}");
        Canvas overlay = overlayObj.AddComponent<Canvas>();
        overlay.renderMode = RenderMode.ScreenSpaceOverlay;
        overlay.sortingOrder = 10; // 确保覆盖MainPanel
        
        overlayObj.AddComponent<GraphicRaycaster>();
        
        // 添加半透明背景
        GameObject bg = new GameObject("Background");
        bg.transform.SetParent(overlayObj.transform, false);
        
        Image bgImg = bg.AddComponent<Image>();
        bgImg.color = new Color(1f, 0f, 0f, 0.3f); // 半透明红色
        
        RectTransform bgRect = bg.GetComponent<RectTransform>();
        bgRect.anchorMin = Vector2.zero;
        bgRect.anchorMax = Vector2.one;
        bgRect.offsetMin = Vector2.zero;
        bgRect.offsetMax = Vector2.zero;
        
        // 添加提示文字
        GameObject label = new GameObject("Label");
        label.transform.SetParent(overlayObj.transform, false);
        
        Text labelText = label.AddComponent<Text>();
        labelText.text = $"测试覆盖层 {testCanvasCount}\n点击关闭";
        labelText.font = Resources.GetBuiltinResource<Font>("Arial.ttf");
        labelText.fontSize = 32;
        labelText.color = Color.white;
        labelText.alignment = TextAnchor.MiddleCenter;
        
        RectTransform labelRect = label.GetComponent<RectTransform>();
        labelRect.anchorMin = new Vector2(0.5f, 0.5f);
        labelRect.anchorMax = new Vector2(0.5f, 0.5f);
        labelRect.sizeDelta = new Vector2(400, 200);
        
        // 添加点击关闭功能
        Button closeBtn = bg.AddComponent<Button>();
        closeBtn.onClick.AddListener(() => {
            Debug.Log($"关闭快速测试Canvas: {overlayObj.name}");
            Destroy(overlayObj);
            UpdateStatus();
        });
        
        Debug.Log($"创建快速测试Canvas，SortingOrder: {overlay.sortingOrder}");
        UpdateStatus();
    }
    
    void UpdateStatus()
    {
        if (statusText != null)
        {
            string status = "Canvas测试状态:\n";
            
            if (mainPanel != null && mainPanel.BodyAndOrgans != null)
            {
                bool visible = mainPanel.BodyAndOrgans.activeInHierarchy;
                status += $"模型状态: {(visible ? "显示" : "隐藏")}\n";
            }
            
            Canvas[] allCanvas = FindObjectsOfType<Canvas>();
            status += $"Canvas总数: {allCanvas.Length}";
            
            statusText.text = status;
        }
    }
    
    void Update()
    {
        // 每秒更新状态
        if (Time.frameCount % 60 == 0)
        {
            UpdateStatus();
        }
    }
}