// Chessboard.cs
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 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);
		// };

		InitChessBoard();
	}
	
	public override void _Input(InputEvent @event) {
		if (@event is InputEventMouseButton mouseEvent &&
			mouseEvent.Pressed &&
			mouseEvent.ButtonIndex == MouseButton.Left) {
			// HandleMouseClick(GetGlobalTransformWithCanvas().AffineInverse() * mouseButton.Position);
			HandleMouseClick(GetLocalMousePosition());
		}
	}
	
	private void HandleMouseClick(Vector2 clickPosition) {
		Vector2 clickBoardPos = (PosTrans.transArrToPix.AffineInverse() *
				clickPosition).Round();
		
		playerSelf.HandleBoardPosClick(clickBoardPos);
	}

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

	public void InitChessBoard() {
        InitializePieces("black", 0, new[] {
        ("车", 0, 0), ("马", 1, 0), ("象", 2, 0),
		("士", 3, 0), ("将", 4, 0), ("士", 5, 0),
		("象", 6, 0), ("马", 7, 0), ("车", 8, 0),
        ("炮", 1, 2), ("炮", 7, 2),
        ("卒", 0, 3), ("卒", 2, 3), ("卒", 4, 3), ("卒", 6, 3), ("卒", 8, 3)
    	});

        InitializePieces("red", 9, new[] {
        ("车", 0, -0), ("马", 1, -0), ("象", 2, -0),
		("士", 3, -0), ("将", 4, -0), ("士", 5, -0),
		("象", 6, -0), ("马", 7, -0), ("车", 8, -0),
        ("炮", 1, -2), ("炮", 7, -2),
        ("卒", 0, -3), ("卒", 2, -3), ("卒", 4, -3), ("卒", 6, -3), ("卒", 8, -3)
    	});
    }

    private void InitializePieces(string color, int baseY, (string label, int x, int y)[] positions) {
        foreach (var (label, x, y) in positions) {
            InsertNode(new ChessPiece {
                PieceLabel = label,
                LabelColor = new Color(color)
            }, new Vector2(x, baseY + y));
        }
    }


    // using Godot;

    // public enum ChessType
    // {
    //     Carriage,
    //     Horse,
    //     Elephant,
    //     Advisor,
    //     General,
    //     Cannon,
    //     Pawn
    // }

    // public class VirtualBoard
    // {
    //     // ...其他原有成员变量...

    //     public VirtualBoard(Node root = null)
    //     {
    //         BoardRoot = root ?? GetTree().CurrentScene; // 如果未提供root，默认为当前场景
    //     }

    //     public void InitChessBoard()
    //     {
    //         // 定义黑色和红色棋子的初始位置和类型
    //         var positions = new (Vector2 position, ChessType type)[]
    //         {
    //             // 黑方棋子初始化...
    //             // 示例省略具体位置和类型，你需要根据实际情况填写
    //             // (new Vector2(x, y), ChessType.Pawn),

    //             // 红方棋子初始化...
    //             // 同上
    //         };

    //         // 初始化棋子
    //         foreach (var (position, type) in positions)
    //         {
    //             var color = position.Y == 0 ? new Color("black") : new Color("red"); // 根据行判断颜色
    //             var piece = CreateChessPiece(type, color);
    //             InsertChess(piece, position);
    //         }
    //     }

    //     private ChessPiece CreateChessPiece(ChessType type, Color labelColor)
    //     {
    //         // 根据ChessType创建对应的棋子实例并设置Label和颜色
    //         // 这里需要你实现具体的逻辑，例如switch case或映射表来决定创建哪种棋子
    //         // 返回创建的棋子实例
    //     }

    //     // ...其他原有方法...
    // }
}