// Chessboard.cs
using System;
using Godot;

public partial class ChessBoard : Node2D {
    public event EventHandler<Vector2> OnMouseClicked;
	public event EventHandler<Vector2> OnPosClicked;

	public override void _Ready() {
	}

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

		board.OnInsert += (sender, piece) => {
			if (piece.data != null && piece.data is Node) {
				AddChild(piece.data as Node);
			} else {
				ChessPiece chessPiece = new(piece.name, piece);

				if (piece.Pos().Y >= 5) {
					chessPiece.LabelColor = new Color("red");
				} else {
					chessPiece.LabelColor = new Color("black");
				}
				AddChild(chessPiece);
			}
		};
	}
	
	public override void _Input(InputEvent @event) {
		if (@event is InputEventMouseButton mouseEvent &&
				mouseEvent.Pressed &&
				mouseEvent.ButtonIndex == MouseButton.Left) {
            OnMouseClicked?.Invoke(this, GetLocalMousePosition());
			OnPosClicked?.Invoke(this, (PosTrans.transArrToPix.AffineInverse() *
				GetLocalMousePosition()).Round());
		}
	}
}