package backend;

import windowInterface.MyInterface;
import java.util.List;

public class Game extends Thread {
    private final AutoPlayer aiPlayer;
    private Board board;
    private final MyInterface ui;
    private final boolean[] aiOn = new boolean[2];  // [0]=black, [1]=white

    private int whiteCaptures = 0, blackCaptures = 0;
    private boolean gameOver = false;
    private int loopDelay = 250; // ms

    public Game(MyInterface ui) {
        this.ui       = ui;
        this.board    = new Board(8, 8);
        this.aiPlayer = new AutoPlayer();
    }

    public int getWidth()         { return board.getWidth(); }
    public int getHeight()        { return board.getHeight(); }
    public int getWhiteCaptures() { return whiteCaptures; }
    public int getBlackCaptures() { return blackCaptures; }

    @Override
    public void run() {
        while (!gameOver) {
            if (aiOn[board.isTurnWhite() ? 1 : 0]) {
                Move m = aiPlayer.computeBestMove(new Board(board));
                board.playMove(m);
                recordCapture(m);
                checkEnd();
            }
            ui.update(board.getTurnNumber(), board.isTurnWhite());
            try { Thread.sleep(loopDelay); }
            catch (InterruptedException e) { }
        }
    }

    private void recordCapture(Move m) {
        if (m != null && m.getCapturedPiece() != null) {
            if (m.isWhite()) whiteCaptures++;
            else              blackCaptures++;
        }
    }

    public void clickCoords(int x, int y) {
        if (gameOver) return;
        if (!aiOn[board.isTurnWhite() ? 1 : 0]) {
            board.userTouch(x, y);
            Move last = board.getLastMove();
            recordCapture(last);
            checkEnd();
        }
    }

    private void checkEnd() {
        boolean side = board.isTurnWhite();
        List<Move> replies = board.generateLegalMoves(side);
        if (replies.isEmpty()) {
            String msg;
            if (board.isInCheck(side)) {
                msg = (side ? "White" : "Black")
                    + " is checkmated. "
                    + (!side ? "White" : "Black")
                    + " wins!";
            } else {
                msg = "Stalemate—draw.";
            }
            ui.gameOver(msg);
            gameOver = true;
        }
    }

    // ─── simple forwards to Board ─────────────────────────────────────────

    public void setPiece(boolean w, PieceType t, int x, int y) {
        board.setPiece(w, t, x, y);
    }

    public void setDefaultSetup() {
        board.cleanBoard();
        board.populateBoard();
    }

    public void setBoard(String[] rows) {
        board = new Board(rows);
    }

    public String[] getFileRepresentation() {
        return board.toFileRep();
    }

    public Iterable<Piece> getPieces() {
        return board.getPieces();
    }

    public boolean isSelected(int x, int y) {
        return board.isSelected(x, y);
    }

    public boolean isHighlighted(int x, int y) {
        return board.isHighlighted(x, y);
    }

    public void undoLastMove() {
        board.undoLastMove();
    }

    public void toggleAI(boolean isWhite) {
        aiOn[isWhite ? 1 : 0] = !aiOn[isWhite ? 1 : 0];
    }

    public Board getBoard() { return board; }

    public void setLoopDelay(int ms) {
        this.loopDelay = ms;
    }
}