using System.Collections;
using Godot;
using Godot.Collections;

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

	private Player playerSelf;
	private Player playerOpponent;

	// 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");
		isSession = global.RPClient.IsOnline();

		playerSelf = new Player(board.board, Player.PlayerType.Human);
		playerOpponent = new Player(board.board, Player.PlayerType.Human);
		InitChessBoard();
		GetNode<LineEdit>("Control/VBoxContainer/MarginContainer3/HFlowContainer/LineEdit")
			.Text = global.GlobalData["player_color"].AsString();
		GD.PrintErr("ChessGame ", global.RPClient.GetUserId(), ":",global.GlobalData["player_color"]);

        dialog = new ConfirmationDialog {
            DialogAutowrap = true,
            MinSize = new Vector2I(400, 200),
			Position = new Vector2I(200, 400),
        };
		AddChild(dialog);

		board.OnPosClicked += (sender, pos) => {
			if (isSession) {
				var res = global.RPClient.SendSessionToAll(global.sessionId, new Dictionary {
						{"type", "mouseClicked"},
						{"X", pos.X},
						{"Y", pos.Y},
						{"id", global.RPClient.GetUserId()}
					});
				playerSelf.HandleBoardPosClick(pos);
			} else {
				playerSelf.HandleBoardPosClick(pos);
				playerSelf.SetAllowedPieces(null);
			}
		};

        if (isSession) {
			GD.Print("ws is connected");

			global.RPClient.OnPRCSessionExit += (cmd, code) => {
				GoHome();
			};

			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) {
	}

	public void InitChessBoard() {
        ArrayList black = 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)
    	});

        ArrayList red = 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)
    	});
		if (global.GlobalData["player_color"].AsString() == "red") {
			playerSelf.SetAllowedPieces(red);
			playerOpponent.SetAllowedPieces(black);
		} else {
			playerSelf.SetAllowedPieces(black);
			playerOpponent.SetAllowedPieces(red);
		}
    }

    private ArrayList InitializePieces(string color, int baseY, (string label, int x, int y)[] positions) {
		ArrayList list = new();      
		foreach (var (label, x, y) in positions) {
            ChessPiece piece = new ChessPiece {
                PieceLabel = label,
                LabelColor = new Color(color)
            };
			list.Add(piece.GetVirtualPiece());
            board.InsertNode(piece, new Vector2(x, baseY + y));
        }
		return list;
    }

	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 "mouseClicked":
				if (msg["id"].ToString() == global.RPClient.GetUserId()) {
					break;
				}
				Vector2 mouseClicked = new(GD.StrToVar(msg["X"].ToString()).AsInt32(),
					GD.StrToVar(msg["Y"].ToString()).AsInt32());
				playerOpponent.HandleBoardPosClick(mouseClicked);
				break;
			case "undo":
				if (msg["id"].ToString() == global.RPClient.GetUserId()) {
					break;
				}
				playerOpponent.Undo();
				break;
			case "reInit":
			 	_ReInit();
				break;
		}
	}

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

	private void BtnOver() {
		GD.Print($"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.Print($"Undo {isSession}");

		if (isSession) {
			playerSelf.Undo();
			global.RPClient.SendSessionToAll(global.sessionId, new Dictionary{
				{"type", "undo"},
				{"id", global.RPClient.GetUserId()},
			});
		} else {
			playerSelf.Undo();
		}
	}

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