Game.java

import java.io.*;
import java.util.ArrayList;

public class Game implements Serializable {
    private Deck deck;
    private ArrayList<Player> players;
    private Card topCard;
    private int currentPlayerIndex;

    public Game(int numPlayers) {
        deck = new Deck();
        players = new ArrayList<>();
        for (int i = 1; i <= numPlayers; i++) {
            players.add(new Player("Player " + i));
        }
        for (Player player : players) {
            for (int j = 0; j < 5; j++) {
                player.addCard(deck.drawCard());
            }
        }
        topCard = deck.drawCard();
        currentPlayerIndex = 0;
    }

    public Card getTopCard() {
        return topCard;
    }

    public void playTurn(Player player, Card card) {
        if (isValidMove(card)) {
            player.removeCard(card);
            topCard = card;
            if (player.hasWon()) {
                System.out.println(player.getName() + " has won the game!");
            }
        } else {
            System.out.println("Invalid move by " + player.getName() + " with card " + card);
        }
    }

    public boolean isValidMove(Card card) {
        return card.getSuit().equals(topCard.getSuit()) || card.getRank().equals(topCard.getRank())
                || card.getRank().equals("8");
    }

    public Player getPlayer(int index) {
        return players.get(index);
    }

    public ArrayList<Player> getPlayers() {
        return players;
    }

    public Deck getDeck() {
        return deck;
    }

    public int getCurrentPlayerIndex() {
        return currentPlayerIndex;
    }

    public void setCurrentPlayerIndex(int index) {
        currentPlayerIndex = index;
    }

    public void saveGame(String filePath) throws IOException {
        File file = new File(filePath);
        if (file.getParentFile() != null && !file.getParentFile().exists()) {
            throw new IOException("Directory does not exist: " + file.getParentFile());
        }
        if (!file.getParentFile().canWrite()) {
            throw new IOException("No write permission to directory: " + file.getParentFile());
        }
        try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(filePath))) {
            oos.writeObject(this);
        } catch (FileNotFoundException e) {
            throw new IOException("File not found: " + filePath, e);
        } catch (IOException e) {
            throw new IOException("Error saving game to file: " + filePath, e);
        }
    }

    public static Game loadGame(String filePath) throws IOException, ClassNotFoundException {
        try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(filePath))) {
            return (Game) ois.readObject();
        } catch (FileNotFoundException e) {
            throw new IOException("File not found: " + filePath, e);
        } catch (IOException e) {
            throw new IOException("Error loading game from file: " + filePath, e);
        } catch (ClassNotFoundException e) {
            throw new ClassNotFoundException("Class not found while loading game from file: " + filePath, e);
        }
    }
}