using System;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.UI;
using UnityEditor;
using TMPro;

public static class UIPrefabGenerator
{
    public static void GeneratePrefabFromJson(string jsonPath, string prefabPath = null)
    {
        if (!File.Exists(jsonPath))
        {
            Debug.LogError("JSON file not found: " + jsonPath);
            return;
        }

        string jsonContent = File.ReadAllText(jsonPath);
        UILayoutData layoutData = JsonUtility.FromJson<UILayoutData>(jsonContent);

        if (layoutData == null)
        {
            Debug.LogError("Failed to parse JSON file: " + jsonPath);
            return;
        }

        if (string.IsNullOrEmpty(prefabPath))
        {
            prefabPath = "Assets/Game/GameHFResource/CN/UIWindows/" + layoutData.name + "/" + layoutData.name + ".prefab";
        }

        GameObject root = new GameObject(layoutData.name);
        root.layer = layoutData.layer;

        Canvas canvas = root.AddComponent<Canvas>();
        canvas.renderMode = RenderMode.ScreenSpaceOverlay;
        if (layoutData.canvas != null)
        {
            canvas.pixelPerfect = layoutData.canvas.pixelPerfect;
        }

        root.AddComponent<CanvasScaler>();
        root.AddComponent<GraphicRaycaster>();

        RectTransform rootRect = root.GetComponent<RectTransform>();
        SetRectTransform(rootRect, layoutData.rectTransform);

        foreach (var childData in layoutData.children)
        {
            CreateUIElement(childData, root.transform);
        }

        CreatePrefab(root, prefabPath);
        GameObject.DestroyImmediate(root);

        AssetDatabase.Refresh();
        Debug.Log("UI Prefab generated successfully: " + prefabPath);
    }

    private static void CreateUIElement(UIElementData data, Transform parent)
    {
        GameObject obj = new GameObject(data.name);
        obj.transform.SetParent(parent, false);

        RectTransform rect = obj.AddComponent<RectTransform>();
        SetRectTransform(rect, data.rectTransform);

        switch (data.type)
        {
            case "Image":
            case "SFUI_Image":
                CreateImage(obj, data.image);
                break;
            case "Button":
            case "SFUI_Button":
                CreateButton(obj, data.button, data.image);
                break;
            case "TextMeshProUGUI":
            case "SFUI_TextMeshProUGUI":
                CreateTextMeshPro(obj, data.text);
                break;
            case "RectTransform":
            case "SFUI_Viewport":
            case "SFUI_Content":
                CreateRectTransform(obj, data.layoutGroup);
                break;
            case "ScrollRect":
            case "SFUI_ScrollRect":
                CreateScrollRect(obj, data.scrollRect);
                break;
            case "GridLayoutGroup":
                CreateGridLayoutGroup(obj, data.layoutGroup);
                break;
            case "VerticalLayoutGroup":
                CreateVerticalLayoutGroup(obj, data.layoutGroup);
                break;
            case "HorizontalLayoutGroup":
                CreateHorizontalLayoutGroup(obj, data.layoutGroup);
                break;
            case "Toggle":
            case "SFUI_Toggle":
                CreateToggle(obj, data.toggle);
                break;
            case "Slider":
            case "SFUI_Slider":
                CreateSlider(obj, data.slider);
                break;
            case "InputField":
            case "SFUI_InputField":
                CreateInputField(obj, data.inputField);
                break;
            case "CanvasScaler":
            case "GraphicRaycaster":
                break;
            case "SFUI_ListViewItem":
                CreateListViewItemPlaceholder(obj);
                break;
            case "Canvas":
            case "SFUI_Window":
                break;
            default:
                break;
        }

        if (data.children != null)
        {
            foreach (var childData in data.children)
            {
                CreateUIElement(childData, obj.transform);
            }
        }
    }

    private static void SetRectTransform(RectTransform rect, RectTransformData data)
    {
        if (data == null) return;
        
        rect.anchorMin = new Vector2(data.anchorMin[0], data.anchorMin[1]);
        rect.anchorMax = new Vector2(data.anchorMax[0], data.anchorMax[1]);
        rect.anchoredPosition3D = new Vector3(data.position[0], data.position[1], data.position[2]);
        rect.sizeDelta = new Vector2(data.sizeDelta[0], data.sizeDelta[1]);
        rect.pivot = new Vector2(data.pivot[0], data.pivot[1]);
        
        if (data.localScale != null && data.localScale.Length >= 3)
        {
            rect.localScale = new Vector3(data.localScale[0], data.localScale[1], data.localScale[2]);
        }
        
        if (data.localRotation != null && data.localRotation.Length >= 3)
        {
            rect.localEulerAngles = new Vector3(data.localRotation[0], data.localRotation[1], data.localRotation[2]);
        }
    }

    private static void CreateImage(GameObject obj, ImageData data)
    {
        if (data == null) return;
        
        Image image = obj.AddComponent<Image>();
        if (!string.IsNullOrEmpty(data.sprite))
        {
            Sprite sprite = AssetDatabase.LoadAssetAtPath<Sprite>(data.sprite);
            if (sprite != null)
            {
                image.sprite = sprite;
            }
        }
        
        try
        {
            image.type = (Image.Type)Enum.Parse(typeof(Image.Type), data.type);
        }
        catch
        {
            image.type = Image.Type.Simple;
        }
        
        image.color = new Color(data.color[0], data.color[1], data.color[2], data.color[3]);
        image.raycastTarget = data.raycastTarget;
        image.preserveAspect = data.preserveAspect;
    }

    private static void CreateButton(GameObject obj, ButtonData buttonData, ImageData imageData)
    {
        Button button = obj.AddComponent<Button>();
        if (buttonData != null)
        {
            button.interactable = buttonData.interactable;
            try
            {
                button.transition = (Selectable.Transition)Enum.Parse(typeof(Selectable.Transition), buttonData.transition);
            }
            catch
            {
                button.transition = Selectable.Transition.ColorTint;
            }
        }

        if (imageData != null)
        {
            CreateImage(obj, imageData);
        }
    }

    private static void CreateTextMeshPro(GameObject obj, TextData data)
    {
        if (data == null) return;
        
        TextMeshProUGUI text = obj.AddComponent<TextMeshProUGUI>();
        text.text = data.text;
        text.fontSize = data.fontSize;
        text.color = new Color(data.color[0], data.color[1], data.color[2], data.color[3]);

        if (!string.IsNullOrEmpty(data.font))
        {
            TMP_FontAsset fontAsset = AssetDatabase.LoadAssetAtPath<TMP_FontAsset>(data.font);
            if (fontAsset != null)
            {
                text.font = fontAsset;
            }
        }

        if (!string.IsNullOrEmpty(data.materialPreset))
        {
            Material material = AssetDatabase.LoadAssetAtPath<Material>(data.materialPreset);
            if (material != null)
            {
                text.material = material;
            }
        }

        try
        {
            text.alignment = (TextAlignmentOptions)Enum.Parse(typeof(TextAlignmentOptions), data.alignment);
        }
        catch
        {
            text.alignment = TextAlignmentOptions.Center;
        }
        
        try
        {
            text.verticalAlignment = (VerticalAlignmentOptions)Enum.Parse(typeof(VerticalAlignmentOptions), data.verticalAlignment);
        }
        catch
        {
            text.verticalAlignment = VerticalAlignmentOptions.Middle;
        }
        
        text.richText = data.richText;
        
        try
        {
            text.overflowMode = (TextOverflowModes)Enum.Parse(typeof(TextOverflowModes), data.overflowMode);
        }
        catch
        {
            text.overflowMode = TextOverflowModes.Truncate;
        }
        
        text.enableWordWrapping = data.enableWordWrapping;
    }

    private static void CreateRectTransform(GameObject obj, LayoutGroupData layoutData)
    {
        if (layoutData != null)
        {
            switch (layoutData.type)
            {
                case "GridLayoutGroup":
                    CreateGridLayoutGroup(obj, layoutData);
                    break;
                case "VerticalLayoutGroup":
                    CreateVerticalLayoutGroup(obj, layoutData);
                    break;
                case "HorizontalLayoutGroup":
                    CreateHorizontalLayoutGroup(obj, layoutData);
                    break;
            }
        }
    }

    private static void CreateGridLayoutGroup(GameObject obj, LayoutGroupData layoutData)
    {
        if (layoutData == null) return;
        
        GridLayoutGroup grid = obj.AddComponent<GridLayoutGroup>();
        grid.cellSize = new Vector2(layoutData.cellSize[0], layoutData.cellSize[1]);
        grid.spacing = new Vector2(layoutData.spacing[0], layoutData.spacing[1]);
        grid.constraint = (GridLayoutGroup.Constraint)layoutData.constraint;
        
        try
        {
            grid.childAlignment = (TextAnchor)Enum.Parse(typeof(TextAnchor), layoutData.childAlignment);
        }
        catch
        {
            grid.childAlignment = TextAnchor.UpperLeft;
        }
        
        grid.padding = new RectOffset(layoutData.padding[0], layoutData.padding[1], layoutData.padding[2], layoutData.padding[3]);
    }

    private static void CreateVerticalLayoutGroup(GameObject obj, LayoutGroupData layoutData)
    {
        if (layoutData == null) return;
        
        VerticalLayoutGroup vertical = obj.AddComponent<VerticalLayoutGroup>();
        vertical.spacing = layoutData.spacing[1];
        
        try
        {
            vertical.childAlignment = (TextAnchor)Enum.Parse(typeof(TextAnchor), layoutData.childAlignment);
        }
        catch
        {
            vertical.childAlignment = TextAnchor.UpperLeft;
        }
        
        vertical.padding = new RectOffset(layoutData.padding[0], layoutData.padding[1], layoutData.padding[2], layoutData.padding[3]);
    }

    private static void CreateHorizontalLayoutGroup(GameObject obj, LayoutGroupData layoutData)
    {
        if (layoutData == null) return;
        
        HorizontalLayoutGroup horizontal = obj.AddComponent<HorizontalLayoutGroup>();
        horizontal.spacing = layoutData.spacing[0];
        
        try
        {
            horizontal.childAlignment = (TextAnchor)Enum.Parse(typeof(TextAnchor), layoutData.childAlignment);
        }
        catch
        {
            horizontal.childAlignment = TextAnchor.UpperLeft;
        }
        
        horizontal.padding = new RectOffset(layoutData.padding[0], layoutData.padding[1], layoutData.padding[2], layoutData.padding[3]);
    }

    private static void CreateScrollRect(GameObject obj, ScrollRectData data)
    {
        if (data == null) return;
        
        ScrollRect scrollRect = obj.AddComponent<ScrollRect>();
        scrollRect.horizontal = data.horizontal;
        scrollRect.vertical = data.vertical;
        
        try
        {
            scrollRect.movementType = (ScrollRect.MovementType)Enum.Parse(typeof(ScrollRect.MovementType), data.movementType);
        }
        catch
        {
            scrollRect.movementType = ScrollRect.MovementType.Clamped;
        }
    }

    private static void CreateToggle(GameObject obj, ToggleData data)
    {
        if (data == null) return;
        
        Toggle toggle = obj.AddComponent<Toggle>();
        toggle.isOn = data.isOn;
        
        try
        {
            toggle.toggleTransition = (Toggle.ToggleTransition)Enum.Parse(typeof(Toggle.ToggleTransition), data.toggleTransition);
        }
        catch
        {
            toggle.toggleTransition = Toggle.ToggleTransition.Fade;
        }
        
        try
        {
            toggle.transition = (Selectable.Transition)Enum.Parse(typeof(Selectable.Transition), data.transition);
        }
        catch
        {
            toggle.transition = Selectable.Transition.ColorTint;
        }
    }

    private static void CreateSlider(GameObject obj, SliderData data)
    {
        if (data == null) return;
        
        Slider slider = obj.AddComponent<Slider>();
        slider.minValue = data.minValue;
        slider.maxValue = data.maxValue;
        slider.value = data.value;
        slider.wholeNumbers = data.wholeNumbers;
        
        try
        {
            slider.direction = (Slider.Direction)Enum.Parse(typeof(Slider.Direction), data.direction);
        }
        catch
        {
            slider.direction = Slider.Direction.LeftToRight;
        }
    }

    private static void CreateInputField(GameObject obj, InputFieldData data)
    {
        if (data == null) return;
        
        InputField inputField = obj.AddComponent<InputField>();
        inputField.text = data.text;
        inputField.characterLimit = data.characterLimit;
        
        try
        {
            inputField.contentType = (InputField.ContentType)Enum.Parse(typeof(InputField.ContentType), data.contentType);
        }
        catch
        {
            inputField.contentType = InputField.ContentType.Standard;
        }
        
        try
        {
            inputField.inputType = (InputField.InputType)Enum.Parse(typeof(InputField.InputType), data.inputType);
        }
        catch
        {
            inputField.inputType = InputField.InputType.Standard;
        }
    }

    private static void CreateListViewItemPlaceholder(GameObject obj)
    {
    }

    private static void CreatePrefab(GameObject root, string path)
    {
        string directory = Path.GetDirectoryName(path);
        if (!Directory.Exists(directory))
        {
            Directory.CreateDirectory(directory);
        }

        PrefabUtility.SaveAsPrefabAsset(root, path);
    }
}

[Serializable]
public class UILayoutData
{
    public string name;
    public string type;
    public int layer;
    public RectTransformData rectTransform;
    public CanvasData canvas;
    public List<UIElementData> children;
}

[Serializable]
public class UIElementData
{
    public string name;
    public string type;
    public RectTransformData rectTransform;
    public ImageData image;
    public ButtonData button;
    public TextData text;
    public LayoutGroupData layoutGroup;
    public ScrollRectData scrollRect;
    public ToggleData toggle;
    public SliderData slider;
    public InputFieldData inputField;
    public List<CustomComponentData> customComponents;
    public List<UIElementData> children;
}

[Serializable]
public class RectTransformData
{
    public float[] anchorMin;
    public float[] anchorMax;
    public float[] position;
    public float[] sizeDelta;
    public float[] pivot;
    public float[] localScale;
    public float[] localRotation;
}

[Serializable]
public class CanvasData
{
    public string renderMode;
    public bool pixelPerfect;
}

[Serializable]
public class ImageData
{
    public string sprite;
    public string type;
    public float[] color;
    public bool raycastTarget;
    public bool preserveAspect;
}

[Serializable]
public class ButtonData
{
    public bool interactable;
    public string transition;
    public string navigationMode;
}

[Serializable]
public class TextData
{
    public string text;
    public float fontSize;
    public string font;
    public string materialPreset;
    public string alignment;
    public string verticalAlignment;
    public float[] color;
    public bool richText;
    public string overflowMode;
    public bool enableWordWrapping;
}

[Serializable]
public class LayoutGroupData
{
    public string type;
    public float[] cellSize;
    public float[] spacing;
    public int constraint;
    public string childAlignment;
    public int[] padding;
}

[Serializable]
public class ScrollRectData
{
    public bool horizontal;
    public bool vertical;
    public string movementType;
    public string horizontalScrollbarVisibility;
    public string verticalScrollbarVisibility;
}

[Serializable]
public class ToggleData
{
    public bool isOn;
    public string toggleTransition;
    public string transition;
}

[Serializable]
public class SliderData
{
    public float minValue;
    public float maxValue;
    public float value;
    public bool wholeNumbers;
    public string direction;
}

[Serializable]
public class InputFieldData
{
    public string text;
    public string placeholder;
    public int characterLimit;
    public string contentType;
    public string inputType;
}

[Serializable]
public class CustomComponentData
{
    public string typeName;
}