using UnityEngine;
using UnityEngine.UI;
using UnityEditor;
using UnityEditor.SceneManagement;

public static class DeathScreenBuilder
{
    private static Font standardFont;
    private static DefaultControls.Resources uiResources;

    [MenuItem("Tools/Build Death Screen In Scene")]
    public static string Build()
    {
        standardFont = Resources.GetBuiltinResource<Font>("LegacyRuntime.ttf");
        if (standardFont == null)
            standardFont = Resources.GetBuiltinResource<Font>("Arial.ttf");

        uiResources = new DefaultControls.Resources();

        // 1. Находим PauseCanvas или Canvas в сцене
        GameObject canvasGo = GameObject.Find("PauseCanvas");
        if (canvasGo == null)
        {
            canvasGo = GameObject.Find("Canvas");
        }

        if (canvasGo == null)
        {
            // Создаем новый Canvas
            canvasGo = new GameObject("DeathCanvas");
            Canvas canvas = canvasGo.AddComponent<Canvas>();
            canvas.renderMode = RenderMode.ScreenSpaceOverlay;
            canvas.sortingOrder = 100;

            CanvasScaler scaler = canvasGo.AddComponent<CanvasScaler>();
            scaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
            scaler.referenceResolution = new Vector2(1920, 1080);
            scaler.matchWidthOrHeight = 0.5f;

            canvasGo.AddComponent<GraphicRaycaster>();
        }

        Undo.RegisterFullObjectHierarchyUndo(canvasGo, "Build Death Screen");

        // Удаляем старый DeathScreenPanel, если был
        Transform oldPanel = canvasGo.transform.Find("DeathScreenPanel");
        if (oldPanel != null)
        {
            Undo.DestroyObjectImmediate(oldPanel.gameObject);
        }

        // 2. Создаем фоновую панель затемнения (DeathScreenPanel)
        GameObject deathPanel = CreateImage("DeathScreenPanel", canvasGo.transform,
            new Color(0.05f, 0.01f, 0.015f, 0.92f), // Глубокий темно-бордовый фон
            Vector2.zero, Vector2.one, Vector2.zero, Vector2.zero);

        CanvasGroup cg = deathPanel.AddComponent<CanvasGroup>();
        cg.alpha = 1f;

        // 3. Центральная карточка (Death_Card)
        GameObject card = CreateImage("Death_Card", deathPanel.transform,
            new Color(0.10f, 0.03f, 0.045f, 0.98f),
            new Vector2(0.5f, 0.5f), new Vector2(0.5f, 0.5f),
            new Vector2(520f, 440f), Vector2.zero);

        // Кроваво-красная светящаяся рамка
        Outline outline = card.AddComponent<Outline>();
        outline.effectColor = new Color(0.95f, 0.15f, 0.20f, 0.70f);
        outline.effectDistance = new Vector2(2f, -2f);

        Shadow shadow = card.AddComponent<Shadow>();
        shadow.effectColor = new Color(0.5f, 0.0f, 0.05f, 0.5f);
        shadow.effectDistance = new Vector2(6f, -6f);

        // 4. Заголовок "ВЫ ПОГИБЛИ"
        CreateText("Death_Title", card.transform,
            "ВЫ ПОГИБЛИ",
            40, FontStyle.Bold, TextAnchor.MiddleCenter,
            new Color(1f, 0.22f, 0.22f, 1f),
            new Vector2(0.05f, 0.76f), new Vector2(0.95f, 0.95f), Vector2.zero, Vector2.zero);

        // Разделительная линия
        CreateImage("Death_Divider", card.transform,
            new Color(0.95f, 0.20f, 0.25f, 0.55f),
            new Vector2(0.12f, 0.74f), new Vector2(0.88f, 0.745f), Vector2.zero, Vector2.zero);

        // Подзаголовок
        CreateText("Death_Subtitle", card.transform,
            "Биометрические показатели на нуле.\nСвязь с комплексом потеряна.",
            16, FontStyle.Normal, TextAnchor.MiddleCenter,
            new Color(0.90f, 0.78f, 0.80f, 0.90f),
            new Vector2(0.08f, 0.58f), new Vector2(0.92f, 0.72f), Vector2.zero, Vector2.zero);

        // 5. Контейнер кнопок
        GameObject btnContainer = CreateEmptyRect("Buttons_Container", card.transform,
            new Vector2(0.10f, 0.08f), new Vector2(0.90f, 0.54f), Vector2.zero, Vector2.zero);

        VerticalLayoutGroup vLayout = btnContainer.AddComponent<VerticalLayoutGroup>();
        vLayout.spacing = 16f;
        vLayout.childAlignment = TextAnchor.MiddleCenter;
        vLayout.childControlWidth = true;
        vLayout.childControlHeight = false;
        vLayout.childForceExpandWidth = true;
        vLayout.childForceExpandHeight = false;

        // Кнопка "Начать заново"
        Button restartBtn = CreateStyledButton("Btn_Restart", btnContainer.transform,
            "↺   НАЧАТЬ ЗАНОВО",
            new Color(0.38f, 0.08f, 0.10f, 0.95f),
            new Color(0.85f, 0.16f, 0.20f, 1.0f),
            new Color(0.22f, 0.04f, 0.05f, 1.0f),
            Color.white, 54f, 20);

        // Кнопка "Главное меню"
        Button mainMenuBtn = CreateStyledButton("Btn_MainMenu", btnContainer.transform,
            "⮌   ГЛАВНОЕ МЕНЮ",
            new Color(0.18f, 0.18f, 0.22f, 0.95f),
            new Color(0.36f, 0.36f, 0.42f, 1.0f),
            new Color(0.10f, 0.10f, 0.12f, 1.0f),
            new Color(0.9f, 0.9f, 0.9f, 1f), 50f, 18);

        // 6. Настраиваем компонент DeathScreenUI
        DeathScreenUI deathUI = canvasGo.GetComponent<DeathScreenUI>();
        if (deathUI == null)
            deathUI = canvasGo.AddComponent<DeathScreenUI>();

        deathUI.deathPanel = deathPanel;
        deathUI.canvasGroup = cg;
        deathUI.restartButton = restartBtn;
        deathUI.mainMenuButton = mainMenuBtn;
        deathUI.fadeDuration = 0.8f;
        deathUI.mainMenuSceneName = "MainMenu";

        // По умолчанию скрываем панель смерти
        deathPanel.SetActive(false);

        // 7. Привязываем к игроку (PlayerHealth)
        GameObject player = GameObject.Find("Player");
        if (player == null) player = GameObject.Find("Capsule");
        if (player != null)
        {
            var ph = player.GetComponent<PlayerHealth>();
            if (ph != null)
            {
                ph.deathScreenUI = deathUI;
                EditorUtility.SetDirty(ph);
            }
        }

        EditorUtility.SetDirty(deathUI);
        EditorUtility.SetDirty(canvasGo);
        EditorSceneManager.MarkSceneDirty(canvasGo.scene);
        EditorSceneManager.SaveScene(canvasGo.scene);

        Debug.Log("<color=green>[DeathScreenBuilder] Экран смерти успешно собран и настроен в сцене!</color>");
        return "SUCCESS: Death screen successfully built and configured in scene!";
    }

    private static GameObject CreateImage(string name, Transform parent, Color color, Vector2 anchorMin, Vector2 anchorMax, Vector2 sizeDelta, Vector2 anchoredPosition)
    {
        GameObject go = CreateEmptyRect(name, parent, anchorMin, anchorMax, sizeDelta, anchoredPosition);
        Image img = go.AddComponent<Image>();
        img.color = color;
        return go;
    }

    private static GameObject CreateEmptyRect(string name, Transform parent, Vector2 anchorMin, Vector2 anchorMax, Vector2 sizeDelta, Vector2 anchoredPosition)
    {
        GameObject go = new GameObject(name);
        go.transform.SetParent(parent, false);
        RectTransform rt = go.AddComponent<RectTransform>();
        rt.anchorMin = anchorMin;
        rt.anchorMax = anchorMax;
        rt.sizeDelta = sizeDelta;
        rt.anchoredPosition = anchoredPosition;
        return go;
    }

    private static GameObject CreateText(string name, Transform parent, string text, int fontSize, FontStyle style, TextAnchor alignment, Color color, Vector2 anchorMin, Vector2 anchorMax, Vector2 sizeDelta, Vector2 anchoredPosition)
    {
        GameObject go = CreateEmptyRect(name, parent, anchorMin, anchorMax, sizeDelta, anchoredPosition);
        Text t = go.AddComponent<Text>();
        t.font = standardFont;
        t.text = text;
        t.fontSize = fontSize;
        t.fontStyle = style;
        t.alignment = alignment;
        t.color = color;
        t.horizontalOverflow = HorizontalWrapMode.Wrap;
        t.verticalOverflow = VerticalWrapMode.Overflow;
        return go;
    }

    private static Button CreateStyledButton(string name, Transform parent, string label, Color normalColor, Color highlightedColor, Color pressedColor, Color textColor, float height, int fontSize)
    {
        GameObject btnObj = DefaultControls.CreateButton(uiResources);
        btnObj.name = name;
        btnObj.transform.SetParent(parent, false);

        LayoutElement layout = btnObj.AddComponent<LayoutElement>();
        layout.minHeight = height;
        layout.preferredHeight = height;

        Image img = btnObj.GetComponent<Image>();
        img.color = normalColor;
        img.type = Image.Type.Sliced;

        Button btn = btnObj.GetComponent<Button>();
        ColorBlock colors = btn.colors;
        colors.normalColor = normalColor;
        colors.highlightedColor = highlightedColor;
        colors.pressedColor = pressedColor;
        colors.selectedColor = highlightedColor;
        colors.colorMultiplier = 1f;
        colors.fadeDuration = 0.12f;
        btn.colors = colors;

        Text text = btnObj.GetComponentInChildren<Text>();
        if (text != null)
        {
            text.font = standardFont;
            text.text = label;
            text.fontSize = fontSize;
            text.fontStyle = FontStyle.Bold;
            text.color = textColor;
            text.alignment = TextAnchor.MiddleCenter;
        }

        return btn;
    }
}