using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.InputSystem.UI;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine.SceneManagement;

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

    [MenuItem("Tools/Add Pause Menu to SampleScene")]
    public static string Build()
    {
        standardFont = Resources.GetBuiltinResource<Font>("LegacyRuntime.ttf");

        uiResources = new DefaultControls.Resources
        {
            standard = AssetDatabase.GetBuiltinExtraResource<Sprite>("UI/Skin/UISprite.psd"),
            background = AssetDatabase.GetBuiltinExtraResource<Sprite>("UI/Skin/Background.psd"),
            knob = AssetDatabase.GetBuiltinExtraResource<Sprite>("UI/Skin/Knob.psd"),
            checkmark = AssetDatabase.GetBuiltinExtraResource<Sprite>("UI/Skin/Checkmark.psd"),
            dropdown = AssetDatabase.GetBuiltinExtraResource<Sprite>("UI/Skin/DropdownArrow.psd"),
            mask = AssetDatabase.GetBuiltinExtraResource<Sprite>("UI/Skin/UIMask.psd")
        };

        // Открываем сцену геймплея
        Scene gameplayScene = EditorSceneManager.OpenScene("Assets/Scenes/SampleScene.unity", OpenSceneMode.Single);

        // Проверяем, есть ли уже EventSystem
        if (Object.FindAnyObjectByType<EventSystem>() == null)
        {
            GameObject esGo = new GameObject("EventSystem");
            esGo.AddComponent<EventSystem>();
            esGo.AddComponent<InputSystemUIInputModule>();
        }

        // Удаляем старый PauseMenu, если был
        var old = GameObject.Find("PauseCanvas");
        if (old != null) Object.DestroyImmediate(old);

        // Создаем Canvas паузы
        GameObject canvasGo = new GameObject("PauseCanvas");
        Canvas canvas = canvasGo.AddComponent<Canvas>();
        canvas.renderMode = RenderMode.ScreenSpaceOverlay;
        canvas.sortingOrder = 100; // Поверх всего

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

        canvasGo.AddComponent<GraphicRaycaster>();

        PauseMenu pauseMenu = canvasGo.AddComponent<PauseMenu>();

        // 1. Панель паузы (PauseMenuPanel)
        GameObject pausePanel = CreateImage("PauseMenuPanel", canvasGo.transform,
            new Color(0.02f, 0.035f, 0.055f, 0.88f),
            Vector2.zero, Vector2.one, Vector2.zero, Vector2.zero);

        GameObject card = CreateImage("Pause_Card", pausePanel.transform,
            new Color(0.06f, 0.09f, 0.14f, 0.98f),
            new Vector2(0.5f, 0.5f), new Vector2(0.5f, 0.5f),
            new Vector2(460f, 520f), Vector2.zero);

        Outline outline = card.AddComponent<Outline>();
        outline.effectColor = new Color(0.00f, 0.85f, 0.95f, 0.45f);
        outline.effectDistance = new Vector2(2f, -2f);

        CreateText("Pause_Title", card.transform,
            "ПАУЗА",
            34, FontStyle.Bold, TextAnchor.MiddleCenter,
            new Color(0.92f, 0.97f, 1f, 1f),
            new Vector2(0.05f, 0.84f), new Vector2(0.95f, 0.96f), Vector2.zero, Vector2.zero);

        CreateImage("Pause_Divider", card.transform,
            new Color(0.00f, 0.85f, 0.95f, 0.40f),
            new Vector2(0.10f, 0.82f), new Vector2(0.90f, 0.825f), Vector2.zero, Vector2.zero);

        GameObject btnContainer = CreateEmptyRect("Buttons_Container", card.transform,
            new Vector2(0.08f, 0.06f), new Vector2(0.92f, 0.78f), 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;

        Button resumeBtn = CreateStyledButton("Btn_Resume", btnContainer.transform,
            "►   ПРОДОЛЖИТЬ",
            new Color(0.08f, 0.22f, 0.32f, 0.95f),
            new Color(0.00f, 0.65f, 0.85f, 1.0f),
            new Color(0.04f, 0.14f, 0.22f, 1.0f),
            new Color(0.90f, 0.98f, 1.0f, 1.0f),
            60f, 22);

        Button settingsBtn = CreateStyledButton("Btn_Settings", btnContainer.transform,
            "⚙   НАСТРОЙКИ",
            new Color(0.07f, 0.12f, 0.18f, 0.90f),
            new Color(0.18f, 0.38f, 0.52f, 1.0f),
            new Color(0.04f, 0.08f, 0.12f, 1.0f),
            new Color(0.85f, 0.92f, 0.98f, 1.0f),
            56f, 20);

        Button menuBtn = CreateStyledButton("Btn_MainMenu", btnContainer.transform,
            "⌂   ГЛАВНОЕ МЕНЮ",
            new Color(0.07f, 0.12f, 0.18f, 0.90f),
            new Color(0.18f, 0.38f, 0.52f, 1.0f),
            new Color(0.04f, 0.08f, 0.12f, 1.0f),
            new Color(0.85f, 0.92f, 0.98f, 1.0f),
            56f, 20);

        Button quitBtn = CreateStyledButton("Btn_Quit", btnContainer.transform,
            "✖   ВЫХОД ИЗ ИГРЫ",
            new Color(0.18f, 0.08f, 0.10f, 0.90f),
            new Color(0.55f, 0.16f, 0.22f, 1.0f),
            new Color(0.10f, 0.04f, 0.06f, 1.0f),
            new Color(0.95f, 0.85f, 0.85f, 1.0f),
            56f, 20);

        // 2. Панель настроек (SettingsPanel)
        GameObject settingsPanel = CreateEmptyRect("SettingsPanel", canvasGo.transform,
            Vector2.zero, Vector2.one, Vector2.zero, Vector2.zero);

        CreateImage("Backdrop_Dim", settingsPanel.transform,
            new Color(0.01f, 0.02f, 0.03f, 0.80f),
            Vector2.zero, Vector2.one, Vector2.zero, Vector2.zero);

        GameObject settingsCard = CreateImage("Settings_Card", settingsPanel.transform,
            new Color(0.05f, 0.08f, 0.12f, 0.98f),
            new Vector2(0.5f, 0.5f), new Vector2(0.5f, 0.5f),
            new Vector2(880f, 680f), Vector2.zero);

        Outline setOutline = settingsCard.AddComponent<Outline>();
        setOutline.effectColor = new Color(0.00f, 0.85f, 0.95f, 0.50f);
        setOutline.effectDistance = new Vector2(2f, -2f);

        CreateText("Settings_Header", settingsCard.transform,
            "НАСТРОЙКИ",
            28, FontStyle.Bold, TextAnchor.MiddleCenter,
            new Color(0.90f, 0.97f, 1.0f, 1.0f),
            new Vector2(0.05f, 0.90f), new Vector2(0.95f, 0.98f), Vector2.zero, Vector2.zero);

        CreateImage("Settings_Divider", settingsCard.transform,
            new Color(0.00f, 0.85f, 0.95f, 0.35f),
            new Vector2(0.05f, 0.89f), new Vector2(0.95f, 0.895f), Vector2.zero, Vector2.zero);

        GameObject settingsList = CreateEmptyRect("Settings_List", settingsCard.transform,
            new Vector2(0.06f, 0.14f), new Vector2(0.94f, 0.87f), Vector2.zero, Vector2.zero);

        VerticalLayoutGroup sLayout = settingsList.AddComponent<VerticalLayoutGroup>();
        sLayout.spacing = 16f;
        sLayout.childAlignment = TextAnchor.UpperCenter;
        sLayout.childControlWidth = true;
        sLayout.childControlHeight = false;
        sLayout.childForceExpandWidth = true;
        sLayout.childForceExpandHeight = false;

        // Разделы
        CreateCategoryHeader("HEADER_AUDIO", settingsList.transform, "— АУДИО —");
        var volumeRow = CreateSliderRow("Row_Volume", settingsList.transform, "Общая громкость", 0f, 1f, 1f, "%");
        Toggle muteToggle = CreateToggleRow("Row_Mute", settingsList.transform, "Отключить звук");

        CreateCategoryHeader("HEADER_GRAPHICS", settingsList.transform, "— ГРАФИКА —");
        Dropdown qualityDropdown = CreateDropdownRow("Row_Quality", settingsList.transform, "Качество графики");
        Toggle fullscreenToggle = CreateToggleRow("Row_Fullscreen", settingsList.transform, "Полноэкранный режим");

        CreateCategoryHeader("HEADER_CONTROLS", settingsList.transform, "— УПРАВЛЕНИЕ —");
        var sensRow = CreateSliderRow("Row_Sensitivity", settingsList.transform, "Чувствительность мыши", 0.2f, 3.0f, 1.0f, "x");

        GameObject botRow = CreateEmptyRect("Settings_BottomButtons", settingsCard.transform,
            new Vector2(0.06f, 0.03f), new Vector2(0.94f, 0.12f), Vector2.zero, Vector2.zero);

        HorizontalLayoutGroup bLayout = botRow.AddComponent<HorizontalLayoutGroup>();
        bLayout.spacing = 30f;
        bLayout.childAlignment = TextAnchor.MiddleCenter;
        bLayout.childControlWidth = true;
        bLayout.childControlHeight = true;

        Button backBtn = CreateStyledButton("Button_Back", botRow.transform,
            "✔   НАЗАД В ПАУЗУ",
            new Color(0.08f, 0.22f, 0.30f, 0.95f),
            new Color(0.00f, 0.65f, 0.85f, 1.0f),
            new Color(0.05f, 0.14f, 0.20f, 1.0f),
            new Color(0.90f, 0.98f, 1.0f, 1.0f),
            48f, 18);

        // Привязываем ссылки
        pauseMenu.pauseMenuPanel = pausePanel;
        pauseMenu.settingsPanel = settingsPanel;

        pauseMenu.volumeSlider = volumeRow.slider;
        pauseMenu.volumeValueText = volumeRow.valueText;
        pauseMenu.muteToggle = muteToggle;

        pauseMenu.qualityDropdown = qualityDropdown;
        pauseMenu.fullscreenToggle = fullscreenToggle;

        pauseMenu.sensitivitySlider = sensRow.slider;
        pauseMenu.sensitivityValueText = sensRow.valueText;

        UnityEditor.Events.UnityEventTools.AddPersistentListener(resumeBtn.onClick, pauseMenu.ResumeGame);
        UnityEditor.Events.UnityEventTools.AddPersistentListener(settingsBtn.onClick, pauseMenu.OpenSettings);
        UnityEditor.Events.UnityEventTools.AddPersistentListener(menuBtn.onClick, pauseMenu.ReturnToMainMenu);
        UnityEditor.Events.UnityEventTools.AddPersistentListener(quitBtn.onClick, pauseMenu.QuitGame);
        UnityEditor.Events.UnityEventTools.AddPersistentListener(backBtn.onClick, pauseMenu.CloseSettings);

        pausePanel.SetActive(false);
        settingsPanel.SetActive(false);

        // Сохраняем сцену геймплея
        EditorSceneManager.SaveScene(gameplayScene);
        Debug.Log("[PauseMenuBuilder] PauseMenu успешно добавлен в SampleScene.unity");

        // Открываем обратно сцену MainMenu
        EditorSceneManager.OpenScene("Assets/Scenes/MainMenu.unity", OpenSceneMode.Single);

        return "SUCCESS: PauseMenu added to SampleScene and MainMenu restored!";
    }

    #region Хелперы UI

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

    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;
        img.sprite = uiResources.background;
        img.type = Image.Type.Sliced;
        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;
    }

    private static void CreateCategoryHeader(string name, Transform parent, string text)
    {
        GameObject go = CreateEmptyRect(name, parent, Vector2.zero, Vector2.one, new Vector2(0f, 30f), Vector2.zero);
        LayoutElement layout = go.AddComponent<LayoutElement>();
        layout.minHeight = 30f;
        layout.preferredHeight = 30f;

        Text t = go.AddComponent<Text>();
        t.font = standardFont;
        t.text = text;
        t.fontSize = 16;
        t.fontStyle = FontStyle.Bold;
        t.alignment = TextAnchor.MiddleLeft;
        t.color = new Color(0.00f, 0.85f, 0.95f, 0.95f);
    }

    private struct SliderRow
    {
        public Slider slider;
        public Text valueText;
    }

    private static SliderRow CreateSliderRow(string name, Transform parent, string label, float min, float max, float def, string unit)
    {
        GameObject row = CreateEmptyRect(name, parent, Vector2.zero, Vector2.one, new Vector2(0f, 40f), Vector2.zero);
        LayoutElement layout = row.AddComponent<LayoutElement>();
        layout.minHeight = 40f;
        layout.preferredHeight = 40f;

        HorizontalLayoutGroup hLayout = row.AddComponent<HorizontalLayoutGroup>();
        hLayout.spacing = 18f;
        hLayout.childAlignment = TextAnchor.MiddleLeft;
        hLayout.childControlWidth = false;
        hLayout.childControlHeight = true;
        hLayout.childForceExpandWidth = false;
        hLayout.childForceExpandHeight = true;

        GameObject lblGo = CreateEmptyRect("Label", row.transform, Vector2.zero, Vector2.one, new Vector2(260f, 40f), Vector2.zero);
        LayoutElement lblLayout = lblGo.AddComponent<LayoutElement>();
        lblLayout.minWidth = 260f;
        lblLayout.preferredWidth = 260f;
        Text lbl = lblGo.AddComponent<Text>();
        lbl.font = standardFont;
        lbl.text = label;
        lbl.fontSize = 17;
        lbl.alignment = TextAnchor.MiddleLeft;
        lbl.color = new Color(0.85f, 0.92f, 0.98f, 1f);

        GameObject sliderObj = DefaultControls.CreateSlider(uiResources);
        sliderObj.name = "Slider";
        sliderObj.transform.SetParent(row.transform, false);
        LayoutElement sliderLayout = sliderObj.AddComponent<LayoutElement>();
        sliderLayout.minWidth = 360f;
        sliderLayout.preferredWidth = 360f;

        Slider slider = sliderObj.GetComponent<Slider>();
        slider.minValue = min;
        slider.maxValue = max;
        slider.value = def;

        GameObject valGo = CreateEmptyRect("ValueText", row.transform, Vector2.zero, Vector2.one, new Vector2(80f, 40f), Vector2.zero);
        LayoutElement valLayout = valGo.AddComponent<LayoutElement>();
        valLayout.minWidth = 80f;
        valLayout.preferredWidth = 80f;
        Text valText = valGo.AddComponent<Text>();
        valText.font = standardFont;
        valText.text = unit == "%" ? $"{Mathf.RoundToInt(def * 100)}%" : $"{def:F1}{unit}";
        valText.fontSize = 17;
        valText.fontStyle = FontStyle.Bold;
        valText.alignment = TextAnchor.MiddleCenter;
        valText.color = new Color(0.00f, 0.85f, 0.95f, 1f);

        return new SliderRow { slider = slider, valueText = valText };
    }

    private static Toggle CreateToggleRow(string name, Transform parent, string label)
    {
        GameObject row = CreateEmptyRect(name, parent, Vector2.zero, Vector2.one, new Vector2(0f, 38f), Vector2.zero);
        LayoutElement layout = row.AddComponent<LayoutElement>();
        layout.minHeight = 38f;
        layout.preferredHeight = 38f;

        HorizontalLayoutGroup hLayout = row.AddComponent<HorizontalLayoutGroup>();
        hLayout.spacing = 18f;
        hLayout.childAlignment = TextAnchor.MiddleLeft;
        hLayout.childControlWidth = false;
        hLayout.childControlHeight = true;
        hLayout.childForceExpandWidth = false;
        hLayout.childForceExpandHeight = true;

        GameObject lblGo = CreateEmptyRect("Label", row.transform, Vector2.zero, Vector2.one, new Vector2(260f, 38f), Vector2.zero);
        LayoutElement lblLayout = lblGo.AddComponent<LayoutElement>();
        lblLayout.minWidth = 260f;
        lblLayout.preferredWidth = 260f;
        Text lbl = lblGo.AddComponent<Text>();
        lbl.font = standardFont;
        lbl.text = label;
        lbl.fontSize = 17;
        lbl.alignment = TextAnchor.MiddleLeft;
        lbl.color = new Color(0.85f, 0.92f, 0.98f, 1f);

        GameObject toggleObj = DefaultControls.CreateToggle(uiResources);
        toggleObj.name = "Toggle";
        toggleObj.transform.SetParent(row.transform, false);
        LayoutElement toggleLayout = toggleObj.AddComponent<LayoutElement>();
        toggleLayout.minWidth = 50f;
        toggleLayout.preferredWidth = 50f;

        Text toggleLabel = toggleObj.GetComponentInChildren<Text>();
        if (toggleLabel != null) toggleLabel.text = "";

        return toggleObj.GetComponent<Toggle>();
    }

    private static Dropdown CreateDropdownRow(string name, Transform parent, string label)
    {
        GameObject row = CreateEmptyRect(name, parent, Vector2.zero, Vector2.one, new Vector2(0f, 42f), Vector2.zero);
        LayoutElement layout = row.AddComponent<LayoutElement>();
        layout.minHeight = 42f;
        layout.preferredHeight = 42f;

        HorizontalLayoutGroup hLayout = row.AddComponent<HorizontalLayoutGroup>();
        hLayout.spacing = 18f;
        hLayout.childAlignment = TextAnchor.MiddleLeft;
        hLayout.childControlWidth = false;
        hLayout.childControlHeight = true;
        hLayout.childForceExpandWidth = false;
        hLayout.childForceExpandHeight = true;

        GameObject lblGo = CreateEmptyRect("Label", row.transform, Vector2.zero, Vector2.one, new Vector2(260f, 42f), Vector2.zero);
        LayoutElement lblLayout = lblGo.AddComponent<LayoutElement>();
        lblLayout.minWidth = 260f;
        lblLayout.preferredWidth = 260f;
        Text lbl = lblGo.AddComponent<Text>();
        lbl.font = standardFont;
        lbl.text = label;
        lbl.fontSize = 17;
        lbl.alignment = TextAnchor.MiddleLeft;
        lbl.color = new Color(0.85f, 0.92f, 0.98f, 1f);

        GameObject dropdownObj = DefaultControls.CreateDropdown(uiResources);
        dropdownObj.name = "Dropdown";
        dropdownObj.transform.SetParent(row.transform, false);
        LayoutElement ddLayout = dropdownObj.AddComponent<LayoutElement>();
        ddLayout.minWidth = 380f;
        ddLayout.preferredWidth = 380f;

        Dropdown dropdown = dropdownObj.GetComponent<Dropdown>();
        Text caption = dropdown.captionText;
        if (caption != null) caption.font = standardFont;
        Text item = dropdown.itemText;
        if (item != null) item.font = standardFont;

        return dropdown;
    }

    #endregion
}