// Chesspiece.cs
using Godot;

public partial class ChessPiece : Sprite2D {
    // 文字内容
    [Export]
    public string PieceLabel { get; set; } = null;
    // 文字颜色（可导出以编辑器调整）
    [Export]
    public Color LabelColor { get; set; } = new Color("black");
    private Vector2 textureSize;

    private Label labelOfChessName;
    private VirtualPiece piece;

    public VirtualPiece GetVirtualPiece() {
        return piece;
    }

    private void OnMove(Vector2 newPos) {
        Position = PosTrans.transArrToPix * new Vector2(newPos.X, newPos.Y);
    }

    public void OnSelected(bool isSelected) {
        if (isSelected) {
            GD.Print($"{piece.Pos()} is selected");
            Transform *= transToSeleted;
        } else {
            GD.Print($"{piece.Pos()} is deselected");
            Transform *= transToSeleted.AffineInverse();
        }
    }

    Transform2D transToSeleted = new Transform2D(
		new Vector2(1.2f, 0),
		new Vector2(0, 1.2f),
		new Vector2(0, 0)
	);

    public ChessPiece(string name = "", Vector2 pos = new Vector2()) {
        PieceLabel = name;
        piece = new VirtualPiece(name, pos);
        piece.OnMove +=  OnMove;
        piece.OnSelected += OnSelected;
        piece.data = this;
    }

	// Called when the node enters the scene tree for the first time.
	public override void _Ready() {
        InitLabel();
	}

    private void InitLabel() {
        // this.Texture.ResourcePath = "res://Asserts/ChesspieceBase.tres";
        Texture ??= (Texture2D)ResourceLoader.Load("res://Asserts/ChesspieceBase.tres");
        textureSize = Texture.GetSize();
        Vector2 labalPosition = new(
                -textureSize.X / 2,
                -textureSize.Y / 2);
        labelOfChessName = new Label {
            Text = PieceLabel,
            HorizontalAlignment = HorizontalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center,
            Modulate = LabelColor,
            Position = labalPosition,
            Size = textureSize,
        };
        // labelOfChessName.SetAnchorsPreset(Control.LayoutPreset.FullRect);
        AddChild(labelOfChessName);
    }
}