using Godot;

namespace UI.TileSetEditor;

public partial class TileSetEditorPanel : TileSetEditor
{
    /// <summary>
    /// 是否初始化过纹理
    /// </summary>
    public bool InitTexture { get; private set; }
    
    /// <summary>
    /// 纹理
    /// </summary>
    public ImageTexture Texture { get; private set; }
    
    /// <summary>
    /// 纹理的Image对象
    /// </summary>
    public Image TextureImage { get; private set; }

    /// <summary>
    /// 背景颜色
    /// </summary>
    public Color BgColor { get; private set; }
    
    /// <summary>
    /// Cell 横轴数量
    /// </summary>
    public int CellHorizontal { get; private set; }
    
    /// <summary>
    /// Cell 纵轴数量
    /// </summary>
    public int CellVertical { get; private set; }

    /// <summary>
    /// 页签对象
    /// </summary>
    public UiGrid<Tab, TileSetEditorTabData> TabGrid { get; private set; }

    public override void OnCreateUi()
    {
        Texture = new ImageTexture();
        S_Back.Instance.Visible = PrevUi != null;
        S_Back.Instance.Pressed += OnBackClick;

        TabGrid = new UiGrid<Tab, TileSetEditorTabData>(S_Tab, typeof(TileSetEditorTabCell));
        TabGrid.SetHorizontalExpand(true);
        TabGrid.SetCellOffset(new Vector2I(0, 5));
        TabGrid.Add(new TileSetEditorTabData()
        {
            Text = "纹理",
            UiName = UiManager.UiNames.TileSetEditorImport,
        });
        TabGrid.Add(new TileSetEditorTabData()
        {
            Text = "地形",
            UiName = UiManager.UiNames.TileSetEditorTerrain,
        });
        TabGrid.Add(new TileSetEditorTabData()
        {
            Text = "组合",
            UiName = UiManager.UiNames.TileSetEditorCombination,
        });
        TabGrid.Visible = false;

        S_DeleteButton.Instance.Pressed += OnDeleteSourceClick;
        S_AddButton.Instance.Pressed += OnAddSourceClick;
        S_OptionButton.Instance.ItemSelected += OnOptionChange;
    }

    public override void OnDestroyUi()
    {
        TabGrid.Destroy();
        if (Texture != null)
        {
            Texture.Dispose();
        }

        if (TextureImage != null)
        {
            TextureImage.Dispose();
        }
    }

    /// <summary>
    /// 初始化数据
    /// </summary>
    public void InitData(TileSetInfo tileSetInfo)
    {
        S_Title.Instance.Text = "正在编辑：" + tileSetInfo.Name;
        
        //SetTextureData(Image.LoadFromFile("resource/tileSprite/map1/16x16 dungeon ii wall reconfig v04 spritesheet.png"));
        //TabGrid.SelectIndex = 0;
    }

    /// <summary>
    /// 设置纹理
    /// </summary>
    public void SetTextureData(Image image)
    {
        InitTexture = true;
        Texture.SetImage(image);
        if (TextureImage != null)
        {
            TextureImage.Dispose();
        }
        TextureImage = image;
        CellHorizontal = image.GetWidth() / GameConfig.TileCellSize;
        CellVertical = image.GetHeight() / GameConfig.TileCellSize;
        
        //派发事件
        EventManager.EmitEvent(EventEnum.OnSetTileTexture, Texture);
    }

    /// <summary>
    /// 设置背景颜色
    /// </summary>
    public void SetBgColor(Color color)
    {
        BgColor = color;
        
        //派发事件
        EventManager.EmitEvent(EventEnum.OnSetTileSetBgColor, color);
    }
    
    /// <summary>
    /// 将二维位置转换为索引的函数
    /// </summary>
    public int CellPositionToIndex(Vector2I pos)
    {
        return pos.Y * CellHorizontal + pos.X;
    }
    
    /// <summary>
    /// 返回Cell的坐标是否在纹理区域内
    /// </summary>
    public bool IsCellPositionInTexture(Vector2I cell)
    {
        return cell.X >= 0 && cell.Y >= 0 && cell.X < CellHorizontal && cell.Y < CellVertical;
    }

    //返回上一级按钮点击
    private void OnBackClick()
    {
        OpenPrevUi();
    }

    private void OnDeleteSourceClick()
    {
        var optionButton = S_OptionButton.Instance;
        if (optionButton.Selected >= 0)
        {
            EditorWindowManager.ShowConfirm("提示", "是否需要删除该资源!", v =>
            {
                if (v)
                {
                    Debug.Log("删除资源: ");
                }
            });
        }
        else
        {
            EditorWindowManager.ShowTips("提示", "请选择需要删除的资源！");
        }
    }

    private void OnAddSourceClick()
    {
        EditorWindowManager.ShowInput("创建资源", "资源名称：", null, (value, isClose) =>
        {
            var optionButton = S_OptionButton.Instance;
            optionButton.AddItem(value);
            optionButton.Selected = optionButton.ItemCount - 1;
            return true;
        });
    }

    private void OnOptionChange(long index)
    {
        
    }
}