using UnityEngine;
using UnityEditor;
using UnityEngine.UI;
using GameFramework;

/// <summary>
/// 一键搭建游戏 UI：HUD Canvas + 游戏结果 Canvas + 主菜单标题。
/// 菜单路径：Tools > 搭建游戏UI
/// </summary>
public static class UIBuilder
{
    [MenuItem("Tools/搭建游戏UI (HUD + ResultScreen + MainMenu标题)")]
    public static void BuildAll()
    {
        BuildHUD();
        BuildResultScreen();
        Debug.Log("[UIBuilder] 全部 UI 搭建完成！请在 Inspector 中检查引用是否正确。");
    }

    /// <summary>
    /// 在 Gameplay 场景中搭建 HUD Canvas。
    /// </summary>
    [MenuItem("Tools/搭建 HUD Canvas")]
    public static void BuildHUD()
    {
        // 创建 HUD Canvas
        var hudCanvasObj = new GameObject("HUD_Canvas");
        var canvas = hudCanvasObj.AddComponent<Canvas>();
        canvas.renderMode = RenderMode.ScreenSpaceOverlay;
        canvas.sortingOrder = 10001;
        hudCanvasObj.AddComponent<CanvasScaler>().uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
        hudCanvasObj.GetComponent<CanvasScaler>().referenceResolution = new Vector2(1920, 1080);
        hudCanvasObj.AddComponent<GraphicRaycaster>();

        // 添加 GameHUD 脚本
        var hud = hudCanvasObj.AddComponent<GameHUD>();

        // ===== 左上角：血量区域 =====
        var healthArea = CreateChild(hudCanvasObj, "HealthArea", new Vector2(20, -20));
        var healthLayout = healthArea.AddComponent<VerticalLayoutGroup>();
        healthLayout.spacing = 5;
        healthLayout.childForceExpandWidth = false;
        healthLayout.childForceExpandHeight = false;
        healthArea.AddComponent<ContentSizeFitter>().verticalFit = ContentSizeFitter.FitMode.PreferredSize;

        // 血量 Slider
        var sliderObj = new GameObject("HealthSlider");
        sliderObj.transform.SetParent(healthArea.transform, false);
        var slider = sliderObj.AddComponent<Slider>();
        slider.minValue = 0;
        slider.maxValue = 1;
        slider.value = 1;
        slider.interactable = false;
        var sliderRect = sliderObj.GetComponent<RectTransform>();
        sliderRect.sizeDelta = new Vector2(200, 20);

        // Slider 背景
        var sliderBg = new GameObject("Background");
        sliderBg.transform.SetParent(sliderObj.transform, false);
        var bgImage = sliderBg.AddComponent<Image>();
        bgImage.color = new Color(0.2f, 0.2f, 0.2f, 0.8f);
        var bgRect = sliderBg.GetComponent<RectTransform>();
        bgRect.anchorMin = Vector2.zero;
        bgRect.anchorMax = Vector2.one;
        bgRect.sizeDelta = Vector2.zero;

        // Slider 填充区域
        var fillArea = new GameObject("Fill Area");
        fillArea.transform.SetParent(sliderObj.transform, false);
        var fillAreaRect = fillArea.AddComponent<RectTransform>();
        fillAreaRect.anchorMin = new Vector2(0, 0);
        fillAreaRect.anchorMax = new Vector2(1, 1);
        fillAreaRect.sizeDelta = Vector2.zero;

        var fill = new GameObject("Fill");
        fill.transform.SetParent(fillArea.transform, false);
        var fillImage = fill.AddComponent<Image>();
        fillImage.color = new Color(0.8f, 0.1f, 0.1f, 0.9f);
        var fillRect = fill.GetComponent<RectTransform>();
        fillRect.anchorMin = Vector2.zero;
        fillRect.anchorMax = Vector2.one;
        fillRect.sizeDelta = Vector2.zero;

        slider.fillRect = fillRect;

        // 血量文字
        var healthTextObj = CreateText(healthArea.transform, "HealthText", "100/100", 14, TextAnchor.MiddleLeft);
        healthTextObj.GetComponent<RectTransform>().sizeDelta = new Vector2(200, 20);

        // ===== 左上角下方：灵灯区域 =====
        var lanternArea = CreateChild(hudCanvasObj, "LanternArea", new Vector2(20, -80));
        var lanternLayout = lanternArea.AddComponent<VerticalLayoutGroup>();
        lanternLayout.spacing = 3;
        lanternLayout.childForceExpandWidth = false;
        lanternLayout.childForceExpandHeight = false;
        lanternArea.AddComponent<ContentSizeFitter>().verticalFit = ContentSizeFitter.FitMode.PreferredSize;

        var lanternCountObj = CreateText(lanternArea.transform, "LanternCount", "灵灯: 5", 16, TextAnchor.MiddleLeft);
        lanternCountObj.GetComponent<RectTransform>().sizeDelta = new Vector2(200, 24);

        var lanternCDObj = CreateText(lanternArea.transform, "LanternCD", "就绪", 14, TextAnchor.MiddleLeft);
        lanternCDObj.GetComponent<RectTransform>().sizeDelta = new Vector2(200, 20);

        // ===== 右上角：分数 + 暂停 =====
        var topRight = CreateChild(hudCanvasObj, "TopRight", new Vector2(-20, -20));
        var topRightRect = topRight.GetComponent<RectTransform>();
        topRightRect.anchorMin = new Vector2(1, 1);
        topRightRect.anchorMax = new Vector2(1, 1);
        topRightRect.pivot = new Vector2(1, 1);

        var topRightLayout = topRight.AddComponent<VerticalLayoutGroup>();
        topRightLayout.spacing = 8;
        topRightLayout.childForceExpandWidth = false;
        topRightLayout.childForceExpandHeight = false;
        topRightLayout.childAlignment = TextAnchor.UpperRight;
        topRight.AddComponent<ContentSizeFitter>().verticalFit = ContentSizeFitter.FitMode.PreferredSize;

        var scoreObj = CreateText(topRight.transform, "ScoreText", "分数: 0", 20, TextAnchor.MiddleRight);
        scoreObj.GetComponent<RectTransform>().sizeDelta = new Vector2(200, 30);

        // 暂停按钮
        var pauseObj = CreateButton(topRight.transform, "PauseButton", "暂停", new Vector2(100, 35));

        // ===== 连接 GameHUD 引用 =====
        var so = new SerializedObject(hud);
        so.FindProperty("healthSlider").objectReferenceValue = slider;
        so.FindProperty("healthText").objectReferenceValue = healthTextObj.GetComponent<Text>();
        so.FindProperty("lanternCountText").objectReferenceValue = lanternCountObj.GetComponent<Text>();
        so.FindProperty("lanternCDText").objectReferenceValue = lanternCDObj.GetComponent<Text>();
        so.FindProperty("scoreText").objectReferenceValue = scoreObj.GetComponent<Text>();
        so.FindProperty("pauseButton").objectReferenceValue = pauseObj.GetComponent<Button>();
        so.ApplyModifiedProperties();

        Debug.Log("[UIBuilder] HUD Canvas 搭建完成");
    }

    /// <summary>
    /// 在 Gameplay 场景中搭建游戏结果 Canvas。
    /// </summary>
    [MenuItem("Tools/搭建 ResultScreen Canvas")]
    public static void BuildResultScreen()
    {
        // 创建 Result Canvas
        var resultCanvasObj = new GameObject("ResultScreen_Canvas");
        var canvas = resultCanvasObj.AddComponent<Canvas>();
        canvas.renderMode = RenderMode.ScreenSpaceOverlay;
        canvas.sortingOrder = 10002;
        resultCanvasObj.AddComponent<CanvasScaler>().uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
        resultCanvasObj.GetComponent<CanvasScaler>().referenceResolution = new Vector2(1920, 1080);
        resultCanvasObj.AddComponent<GraphicRaycaster>();

        // 添加 GameResultScreen 脚本
        var resultScreen = resultCanvasObj.AddComponent<GameResultScreen>();

        // 半透明黑色背景
        var bgObj = new GameObject("Overlay");
        bgObj.transform.SetParent(resultCanvasObj.transform, false);
        var bgImage = bgObj.AddComponent<Image>();
        bgImage.color = new Color(0, 0, 0, 0.7f);
        var bgRect = bgObj.GetComponent<RectTransform>();
        bgRect.anchorMin = Vector2.zero;
        bgRect.anchorMax = Vector2.one;
        bgRect.sizeDelta = Vector2.zero;

        // ===== 胜利面板 =====
        var winPanel = CreateCenterPanel(resultCanvasObj, "WinPanel", new Color(0.1f, 0.3f, 0.1f, 0.9f));
        var winTitle = CreateText(winPanel.transform, "WinTitle", "胜利！", 40, TextAnchor.MiddleCenter);
        winTitle.GetComponent<Text>().color = new Color(1f, 0.85f, 0.2f);
        winTitle.GetComponent<RectTransform>().anchoredPosition = new Vector2(0, 60);
        var winScore = CreateText(winPanel.transform, "WinScore", "分数: 0", 24, TextAnchor.MiddleCenter);
        winScore.GetComponent<RectTransform>().anchoredPosition = new Vector2(0, 0);
        var winBtn = CreateButton(winPanel.transform, "WinConfirmBtn", "确认", new Vector2(160, 50));
        winBtn.GetComponent<RectTransform>().anchoredPosition = new Vector2(0, -60);

        // ===== 失败面板 =====
        var losePanel = CreateCenterPanel(resultCanvasObj, "LosePanel", new Color(0.3f, 0.1f, 0.1f, 0.9f));
        var loseTitle = CreateText(losePanel.transform, "LoseTitle", "游戏结束", 40, TextAnchor.MiddleCenter);
        loseTitle.GetComponent<Text>().color = new Color(1f, 0.3f, 0.3f);
        loseTitle.GetComponent<RectTransform>().anchoredPosition = new Vector2(0, 60);
        var loseScore = CreateText(losePanel.transform, "LoseScore", "分数: 0", 24, TextAnchor.MiddleCenter);
        loseScore.GetComponent<RectTransform>().anchoredPosition = new Vector2(0, 0);
        var loseBtn = CreateButton(losePanel.transform, "LoseConfirmBtn", "确认", new Vector2(160, 50));
        loseBtn.GetComponent<RectTransform>().anchoredPosition = new Vector2(0, -60);

        // 初始隐藏两个面板
        winPanel.SetActive(false);
        losePanel.SetActive(false);

        // ===== 连接 GameResultScreen 引用 =====
        var so = new SerializedObject(resultScreen);
        so.FindProperty("resultCanvas").objectReferenceValue = canvas;
        so.FindProperty("winPanel").objectReferenceValue = winPanel;
        so.FindProperty("winConfirmButton").objectReferenceValue = winBtn.GetComponent<Button>();
        so.FindProperty("winTitleText").objectReferenceValue = winTitle.GetComponent<Text>();
        so.FindProperty("winScoreText").objectReferenceValue = winScore.GetComponent<Text>();
        so.FindProperty("losePanel").objectReferenceValue = losePanel;
        so.FindProperty("loseConfirmButton").objectReferenceValue = loseBtn.GetComponent<Button>();
        so.FindProperty("loseTitleText").objectReferenceValue = loseTitle.GetComponent<Text>();
        so.FindProperty("loseScoreText").objectReferenceValue = loseScore.GetComponent<Text>();
        so.ApplyModifiedProperties();

        Debug.Log("[UIBuilder] ResultScreen Canvas 搭建完成");
    }

    // ===== 辅助方法 =====

    private static GameObject CreateChild(GameObject parent, string name, Vector2 pos)
    {
        var obj = new GameObject(name);
        obj.transform.SetParent(parent.transform, false);
        var rect = obj.AddComponent<RectTransform>();
        rect.anchorMin = new Vector2(0, 1);
        rect.anchorMax = new Vector2(0, 1);
        rect.pivot = new Vector2(0, 1);
        rect.anchoredPosition = pos;
        return obj;
    }

    private static GameObject CreateText(Transform parent, string name, string content, int fontSize, TextAnchor alignment)
    {
        var obj = new GameObject(name);
        obj.transform.SetParent(parent, false);
        obj.AddComponent<RectTransform>();
        var text = obj.AddComponent<Text>();
        text.text = content;
        text.fontSize = fontSize;
        text.alignment = alignment;
        text.color = Color.white;
        text.font = Resources.GetBuiltinResource<Font>("LegacyRuntime.ttf");
        if (text.font == null) text.font = Font.CreateDynamicFontFromOSFont("Arial", fontSize);
        text.horizontalOverflow = HorizontalWrapMode.Overflow;
        text.verticalOverflow = VerticalWrapMode.Overflow;
        return obj;
    }

    private static GameObject CreateButton(Transform parent, string name, string label, Vector2 size)
    {
        var btnObj = new GameObject(name);
        btnObj.transform.SetParent(parent, false);
        var rect = btnObj.AddComponent<RectTransform>();
        rect.sizeDelta = size;
        var img = btnObj.AddComponent<Image>();
        img.color = new Color(0.3f, 0.3f, 0.3f, 0.9f);
        var btn = btnObj.AddComponent<Button>();

        var textObj = CreateText(btnObj.transform, "Text", label, 18, TextAnchor.MiddleCenter);
        var textRect = textObj.GetComponent<RectTransform>();
        textRect.anchorMin = Vector2.zero;
        textRect.anchorMax = Vector2.one;
        textRect.sizeDelta = Vector2.zero;

        return btnObj;
    }

    private static GameObject CreateCenterPanel(GameObject parent, string name, Color bgColor)
    {
        var panel = new GameObject(name);
        panel.transform.SetParent(parent.transform, false);
        var rect = panel.AddComponent<RectTransform>();
        rect.anchorMin = new Vector2(0.5f, 0.5f);
        rect.anchorMax = new Vector2(0.5f, 0.5f);
        rect.pivot = new Vector2(0.5f, 0.5f);
        rect.sizeDelta = new Vector2(400, 250);
        var img = panel.AddComponent<Image>();
        img.color = bgColor;
        return panel;
    }
}