Movie Booking

import java.util.*;

class Movie {
    private String id;
    private String title;
    private String genre;
    private int duration; // Duration in minutes

    public Movie(String id, String title, String genre, int duration) {
        this.id = id;
        this.title = title;
        this.genre = genre;
        this.duration = duration;
    }

    // Getters and other methods
}

class Theater {
    private String id;
    private String name;
    private List<Screen> screens;

    public Theater(String id, String name) {
        this.id = id;
        this.name = name;
        this.screens = new ArrayList<>();
    }

    public void addScreen(Screen screen) {
        screens.add(screen);
    }

    // Getters and other methods
}

class Screen {
    private String id;
    private int capacity;
    private List<Seat> seats;
    private List<Show> shows;

    public Screen(String id, int capacity) {
        this.id = id;
        this.capacity = capacity;
        this.seats = new ArrayList<>();
        this.shows = new ArrayList<>();
        createSeats(capacity);
    }

    private void createSeats(int capacity) {
        for (int i = 1; i <= capacity; i++) {
            seats.add(new Seat(i));
        }
    }

    public void addShow(Show show) {
        shows.add(show);
    }

    // Getters and other methods
}

class Show {
    private String id;
    private Movie movie;
    private Date startTime;
    private Screen screen;
    private Map<Integer, Boolean> seatAvailability;

    public Show(String id, Movie movie, Date startTime, Screen screen) {
        this.id = id;
        this.movie = movie;
        this.startTime = startTime;
        this.screen = screen;
        this.seatAvailability = new HashMap<>();
        for (Seat seat : screen.getSeats()) {
            seatAvailability.put(seat.getSeatNumber(), true);
        }
    }

    public boolean isSeatAvailable(int seatNumber) {
        return seatAvailability.get(seatNumber);
    }

    public void bookSeat(int seatNumber) {
        if (isSeatAvailable(seatNumber)) {
            seatAvailability.put(seatNumber, false);
        }
    }
    
    // Don't implement is cancellation is not needed
    
    public void releaseSeat(int seatNumber) {
        if (!isSeatAvailable(seatNumber)) {
            seatAvailability.put(seatNumber, true);
        }
    }

    // Getters and other methods
}

class Seat {
    private int seatNumber;

    public Seat(int seatNumber) {
        this.seatNumber = seatNumber;
    }

    public int getSeatNumber() {
        return seatNumber;
    }
}

class User {
    private String id;
    private String name;

    public User(String id, String name) {
        this.id = id;
        this.name = name;
    }

    public Booking bookShow(Show show, List<Integer> seatNumbers) {
        List<Seat> bookedSeats = new ArrayList<>();
        for (int seatNumber : seatNumbers) {
            if (show.isSeatAvailable(seatNumber)) {
                show.bookSeat(seatNumber);
                bookedSeats.add(new Seat(seatNumber));
            } else {
                System.out.println("Seat " + seatNumber + " is not available");
            }
        }
        return new Booking(UUID.randomUUID().toString(), this, show, bookedSeats);
    }
    
    // Don't implement if cancellation is not needed.
    
    public boolean cancelBooking(Booking booking, Payment payment) {
        if (booking.cancelBooking()) {
            return payment.refundPayment();
        }
        return false;
    }

    // Getters and other methods
}

class Booking {
    private String id;
    private User user;
    private Show show;
    private List<Seat> bookedSeats;
    private Date bookingDate;

    public Booking(String id, User user, Show show, List<Seat> bookedSeats) {
        this.id = id;
        this.user = user;
        this.show = show;
        this.bookedSeats = bookedSeats;
        this.bookingDate = new Date();
    }
    
    // Don't implement if cancellation is not needed
    public boolean cancelBooking() {
        if (isCancelled) {
            System.out.println("Booking is already cancelled.");
            return false;
        }
        for (Seat seat : bookedSeats) {
            show.releaseSeat(seat.getSeatNumber());
        }
        isCancelled = true;
        System.out.println("Booking cancelled successfully.");
        return true;
    }

    // Getters and other methods
}

class Payment {
    private String id;
    private Booking booking;
    private double amount;
    private String paymentMethod; // e.g., credit card, PayPal

    public Payment(String id, Booking booking, double amount, String paymentMethod) {
        this.id = id;
        this.booking = booking;
        this.amount = amount;
        this.paymentMethod = paymentMethod;
    }

    public boolean processPayment() {
        // Implement payment processing logic here
        System.out.println("Payment processed for amount: " + amount);
        return true;
    }
    
    // Don't implement if cancellation is not supported
    
    public boolean refundPayment() {
        if (isRefunded) {
            System.out.println("Payment is already refunded.");
            return false;
        }
        // Implement refund processing logic here
        System.out.println("Payment refunded for amount: " + amount);
        isRefunded = true;
        return true;
    }

    // Getters and other methods
}

public class MovieBookingSystem {
    public static void main(String[] args) {
        // Create movies
        Movie movie1 = new Movie("M1", "Inception", "Sci-Fi", 148);
        Movie movie2 = new Movie("M2", "The Matrix", "Action", 136);

        // Create theater and screens
        Theater theater = new Theater("T1", "Cineplex");
        Screen screen1 = new Screen("S1", 100);
        theater.addScreen(screen1);

        // Create shows
        Show show1 = new Show("Sh1", movie1, new Date(), screen1);
        screen1.addShow(show1);

        // Create a user and book tickets
        User user = new User("U1", "John Doe");
        List<Integer> seatsToBook = Arrays.asList(1, 2, 3);
        Booking booking = user.bookShow(show1, seatsToBook);

        // Process payment
        Payment payment = new Payment("P1", booking, 30.0, "Credit Card");
        payment.processPayment();
        
        
        // Cancel the booking and refund payment
        user.cancelBooking(booking, payment);
    }
}