using Godot;
using Godot.Collections;

public partial class ChessGame : Node2D
{
	ChessBoard board;
	Global global;
	ConfirmationDialog dialog;
	private bool isSession = false;
	private Vector2 from;
	private Vector2 to;

	// Called when the node enters the scene tree for the first time.
	public override void _Ready()
	{
		// Init.Call();
		global = GetNode<Global>("/root/Global");
		board = GetNode<ChessBoard>("Chessboard");
        dialog = new ConfirmationDialog {
            DialogAutowrap = true,
            MinSize = new Vector2I(400, 200),
			Position = new Vector2I(200, 400),
        };
		AddChild(dialog);
        // GetNode<Button>("Undo").Connect("pressed", Callable.From(board.Undo));
        // GetNode<Button>("ReInit").Connect("pressed", Callable.From(board.ReInit));
        // GetNode<Button>("Home").Connect("pressed", Callable.From(this.GoHome));

        if (!global.RPClient.GetIsConnected()) {
			return;
		}

		isSession = true;
		GD.Print("ws is connected");
		global.RPClient.OnPRCSessionExit += (cmd, code) => {
			GoHome();
		};
		// board.Set("Hello", Callable.From(() => {GD.PrintErr("hello");}));
		board.board.OnMove += (sender, args) => {
			Vector2 newPos = args.To;
			Vector2 fromPos = args.From;
			if (from.X == fromPos.X && from.Y == fromPos.Y && to.X == newPos.X && to.Y == newPos.Y) {
				return;
			}
			from = fromPos;
			to = newPos;
			var res = global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
					{"type", "move"},
					{"from", fromPos},
					{"to", newPos},
					{"fromX", fromPos.X},
					{"fromY", fromPos.Y},
					{"toX", newPos.X},
					{"toY", newPos.Y},
				});
			GD.Print($"chessMoveFunc Callback {fromPos} -> {newPos} {res}");
		};
		global.RPClient.OnPRCSessionRecv += (msg) => {
			SessionMsgHandle(msg["msg"].AsGodotDictionary());
		};
	}

	// Called every frame. 'delta' is the elapsed time since the previous frame.
	public override void _Process(double delta) {
	}

	private void SessionMsgHandle(Dictionary msg) {
		GD.PrintErr($"session msg: {msg}");
		switch (msg["type"].AsString()) {
			case "over":
				if (global.RPClient.GetUserId() == msg["id"].AsString()) {
					break;
				}
				dialog.Title = "Opponent Finished";
				dialog.DialogText = "Turn On You\n";
				dialog.Visible = true;
				break;
			case "move":
				Vector2 _to = new(GD.StrToVar(msg["toX"].ToString()).AsInt32(),
					GD.StrToVar(msg["toY"].ToString()).AsInt32());

				Vector2 _from = new(GD.StrToVar(msg["fromX"].ToString()).AsInt32(),
					GD.StrToVar(msg["fromY"].ToString()).AsInt32());
				if (_to.X == to.X && _to.Y == to.Y && _from.X == from.X && _from.Y == from.Y) {
					return;
				}
				to = _to;
				from = _from;
				board.playerSelf.MoveAndRecord(to, from);
				break;
			case "undo":
				_Undo();
				break;
			case "reInit":
			 	_ReInit();
				break;
		}
	}

	private void _Undo() {
		board.playerSelf.Undo();
	}

	private void _ReInit() {
		board.playerSelf.ReInit();
		board.InitChessBoard();
	}

	private void BtnOver() {
		GD.PrintErr($"BtnOver {isSession}");
		if (isSession == false) {
			return;
		}
		global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
			{"type", "over"},
			{"id", global.RPClient.GetUserId()},
		});
	}

	public void GoHome() {
		if (global.RPClient.IsOnline()) {
			global.RPClient.ExitServer();
		}
    	global.GotoScene("res://Main.tscn");
	}

	public void Undo() {
		GD.PrintErr($"Undo {isSession}");
		if (isSession == false) {
			_Undo();
		}
		global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
			{"type", "undo"},
		});
	}

	public void ReInit() {
		GD.PrintErr($"ReInit {isSession}");
		if (isSession == false) {
			_ReInit();
		}
		global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
			{"type", "reInit"},
		});
	}
}