// 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 += OnRemove;
		board.OnInsert += OnInsert;
		board.OnMove += OnMove;
		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);
	}
	
	void OnMove(Vector2 from, Vector2 to) {
		chessMoveFunc.Call(to, from);
	}

	void OnRemove(VirtualPiece piece) {
		// (piece.data as Node).QueueFree();
		if (piece?.data != null)
			RemoveChild(piece.data as Node);
	}

	void OnInsert(VirtualPiece piece) {
		ChessPiece chess = piece.data as ChessPiece;
		AddChild(chess);
	}

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


    // 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...
    // }

	public void InitChessBoard() {
		InsertNode(new ChessPiece
		{
			PieceLabel = "车",
			LabelColor = new Color("black"),
		}, new Vector2(0, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "马",
			LabelColor = new Color("black"),
		}, new Vector2(1, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "象",
			LabelColor = new Color("black"),
		}, new Vector2(2, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "士",
			LabelColor = new Color("black"),
		}, new Vector2(3, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "将",
			LabelColor = new Color("black"),
		}, new Vector2(4, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "士",
			LabelColor = new Color("black"),
		}, new Vector2(5, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "象",
			LabelColor = new Color("black"),
		}, new Vector2(6, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "马",
			LabelColor = new Color("black"),
		}, new Vector2(7, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "车",
			LabelColor = new Color("black"),
		}, new Vector2(8, 0));

		InsertNode(new ChessPiece
		{
			PieceLabel = "炮",
			LabelColor = new Color("black"),
		}, new Vector2(1, 2));

		InsertNode(new ChessPiece
		{
			PieceLabel = "炮",
			LabelColor = new Color("black"),
		}, new Vector2(7, 2));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("black"),
		}, new Vector2(0, 3));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("black"),
		}, new Vector2(2, 3));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("black"),
		}, new Vector2(4, 3));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("black"),
		}, new Vector2(6, 3));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("black"),
		}, new Vector2(8, 3));

		// -----------------------------------

		InsertNode(new ChessPiece
		{
			PieceLabel = "车",
			LabelColor = new Color("red"),
		}, new Vector2(0, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "马",
			LabelColor = new Color("red"),
		}, new Vector2(1, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "象",
			LabelColor = new Color("red"),
		}, new Vector2(2, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "士",
			LabelColor = new Color("red"),
		}, new Vector2(3, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "将",
			LabelColor = new Color("red"),
		}, new Vector2(4, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "士",
			LabelColor = new Color("red"),
		}, new Vector2(5, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "象",
			LabelColor = new Color("red"),
		}, new Vector2(6, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "马",
			LabelColor = new Color("red"),
		}, new Vector2(7, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "车",
			LabelColor = new Color("red"),
		}, new Vector2(8, 9));

		InsertNode(new ChessPiece
		{
			PieceLabel = "炮",
			LabelColor = new Color("red"),
		}, new Vector2(1, 7));

		InsertNode(new ChessPiece
		{
			PieceLabel = "炮",
			LabelColor = new Color("red"),
		}, new Vector2(7, 7));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("red"),
		}, new Vector2(0, 6));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("red"),
		}, new Vector2(2, 6));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("red"),
		}, new Vector2(4, 6));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("red"),
		}, new Vector2(6, 6));

		InsertNode(new ChessPiece
		{
			PieceLabel = "卒",
			LabelColor = new Color("red"),
		}, new Vector2(8, 6));
	}
}