// Chessboard.cs
using System;
using Godot;

public partial class ChessBoard : Node2D {
	public VirtualBoard board = null;
	public Player playerSelf = null;

	public delegate bool ChessMoveFunc(Vector2 toPos, Vector2 fromPos);
	// public Callable chessMoveFunc { get; set; }
    public event EventHandler<Vector2> OnMouseClicked;
	public event EventHandler<Vector2> OnPosClicked;

	public override void _Ready() {
		board = new VirtualBoard(9, 10);
		playerSelf = new Player(board);

		board.OnRemove += (sender, piece) => {
			if (piece.data != null) {
				RemoveChild(piece.data as Node);
			}
		};

		board.OnInsert += (sender, piece) => {
			if (piece.data != null) {
				AddChild(piece.data as Node);
			}
		};

		// board.OnMove += (sender, args) => {
		// 	// chessMoveFunc.Call(args.To, args.From);
		// };
	}
	
	public override void _Input(InputEvent @event) {
		if (@event is InputEventMouseButton mouseEvent &&
			mouseEvent.Pressed &&
			mouseEvent.ButtonIndex == MouseButton.Left) {
			// HandleMouseClick(GetGlobalTransformWithCanvas().AffineInverse() * mouseButton.Position);
			
            OnMouseClicked?.Invoke(this, GetLocalMousePosition());
			OnPosClicked?.Invoke(this, (PosTrans.transArrToPix.AffineInverse() *
				GetLocalMousePosition()).Round());
		}
	}

	public void InsertNode(ChessPiece node, Vector2 arrayPos) {
		AddChild(node);
		VirtualPiece piece = node.GetVirtualPiece();
		// piece.Move(vector);
		board.SetPiecePos(piece, arrayPos);
	}
}