AmritaFoodOrderingSystem.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;

public class AmritaFoodOrderingSystem {
    static ArrayList<MenuItem> menu = new ArrayList<>();
    static double dailySales = 0.0;
    static int currentImageIndex = 0; // Initialize image index
    static String[] images = {
        "assets/welcome1.jpg",
        "assets/welcome2.png",
        "assets/welcome3.png",
        "assets/welcome4.jpg"
    };

    public static void main(String[] args) {
        initializeMenu();

        JFrame frame = new JFrame("Amrita Food Ordering System");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(600, 600);
        frame.setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();

        // Header and Image
        JLabel welcomeLabel = new JLabel("Welcome to Amrita Food Ordering System", SwingConstants.CENTER);
        welcomeLabel.setFont(new Font("Arial", Font.BOLD, 16));
        JLabel imageLabel = new JLabel(new ImageIcon(images[currentImageIndex])); // Set initial image

        // Start a timer to update images every 10 seconds
        new javax.swing.Timer(10000, new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                currentImageIndex = (currentImageIndex + 1) % images.length; // Cycle through images
                imageLabel.setIcon(new ImageIcon(images[currentImageIndex])); // Update the image
            }
        }).start();

        // Customer Name Input
        JLabel nameLabel = new JLabel("Customer Name:");
        JTextField nameField = new JTextField(15);

        // Menu and Quantity Select
        JLabel menuLabel = new JLabel("Select Items and Quantity:");
        JPanel menuPanel = new JPanel(new GridLayout(menu.size(), 3, 10, 10));
        ArrayList<JSpinner> quantitySpinners = new ArrayList<>();

        for (MenuItem item : menu) {
            menuPanel.add(new JLabel(item.name + " - Rs. " + item.price));
            JSpinner spinner = new JSpinner(new SpinnerNumberModel(0, 0, 10, 1));
            quantitySpinners.add(spinner);
            menuPanel.add(spinner);
        }

        // Buttons
        JButton placeOrderButton = new JButton("Place Order");
        JButton adminButton = new JButton("Admin Login");

        // Layout the components
        gbc.gridx = 0; gbc.gridy = 0; gbc.fill = GridBagConstraints.HORIZONTAL; frame.add(welcomeLabel, gbc);
        gbc.gridy = 1; frame.add(imageLabel, gbc);
        gbc.gridy = 2; frame.add(nameLabel, gbc);
        gbc.gridy = 3; frame.add(nameField, gbc);
        gbc.gridy = 4; frame.add(menuLabel, gbc);
        gbc.gridy = 5; frame.add(new JScrollPane(menuPanel), gbc);
        gbc.gridy = 6; frame.add(placeOrderButton, gbc);
        gbc.gridy = 7; frame.add(adminButton, gbc);

        frame.setVisible(true);

        // Place Order Action
        placeOrderButton.addActionListener(e -> {
            String customerName = nameField.getText().trim();
            if (customerName.isEmpty()) {
                JOptionPane.showMessageDialog(frame, "Enter customer name!");
                return;
            }

            Order order = new Order(customerName);
            for (int i = 0; i < menu.size(); i++) {
                int quantity = (int) quantitySpinners.get(i).getValue();
                if (quantity > 0) {
                    order.addItem(menu.get(i).name, menu.get(i).price, quantity);
                }
            }

            if (order.orderedItems.isEmpty()) {
                JOptionPane.showMessageDialog(frame, "No items selected!");
                return;
            }

            dailySales += order.getFinalTotal();
            order.saveBill();

            // Display order details with discount
            JOptionPane.showMessageDialog(frame, 
                "Order placed successfully!\n" +
                "Subtotal: Rs. " + order.total + "\n" +
                "Discount: " + (order.calculateDiscount() * 100) + "%\n" +
                "Final Total: Rs. " + order.getFinalTotal()
            );
        });

        // Admin Login Action
        adminButton.addActionListener(e -> {
            String password = JOptionPane.showInputDialog(frame, "Enter Admin Password:");
            if ("admin123".equals(password)) {
                String date = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
                String filePath = "revenue/revenue_" + date + ".txt";

                double savedRevenue = 0.0;

                // Calculate saved revenue from the file
                File revenueFile = new File(filePath);
                if (revenueFile.exists()) {
                    try (BufferedReader reader = new BufferedReader(new FileReader(revenueFile))) {
                        String line;
                        while ((line = reader.readLine()) != null) {
                            if (line.startsWith("Total Revenue for")) {
                                String[] parts = line.split(": Rs. ");
                                if (parts.length > 1) {
                                    savedRevenue += Double.parseDouble(parts[1].trim());
                                }
                            }
                        }
                    } catch (IOException ex) {
                        ex.printStackTrace();
                    }
                }

                // Write updated revenue to the file
                try (BufferedWriter writer = new BufferedWriter(new FileWriter(filePath, true))) {
                    writer.write("Total Revenue for " + date + ": Rs. " + dailySales + "\n");
                } catch (IOException ex) {
                    ex.printStackTrace();
                }

                // Calculate net total revenue (saved + session revenue)
                double netRevenue = savedRevenue + dailySales;

                // Display revenue details
                JOptionPane.showMessageDialog(frame, 
                    "Today's Total Revenue: Rs. " + dailySales + "\n" +
                    "Cumulative Net Revenue: Rs. " + netRevenue
                );
            } else {
                JOptionPane.showMessageDialog(frame, "Invalid Password!");
            }
        });
    }

    private static void initializeMenu() {
        menu.add(new MenuItem("Spring Rolls", 150));
        menu.add(new MenuItem("Samosa", 50));
        menu.add(new MenuItem("Pizza", 300));
        menu.add(new MenuItem("Burger", 200));
        menu.add(new MenuItem("Pasta", 250));
        menu.add(new MenuItem("Coke", 50));
        menu.add(new MenuItem("Ice Cream", 100));
        menu.add(new MenuItem("Brownie", 120));
    }
}

// Class for Menu Item
class MenuItem {
    String name;
    double price;

    MenuItem(String name, double price) {
        this.name = name;
        this.price = price;
    }
}

// Class for Customer Order
class Order {
    String customerName;
    ArrayList<String> orderedItems;
    double total;

    public Order(String customerName) {
        this.customerName = customerName;
        this.orderedItems = new ArrayList<>();
        this.total = 0.0;
    }

    void addItem(String itemName, double price, int quantity) {
        orderedItems.add(itemName + " x" + quantity + " - Rs. " + (price * quantity));
        total += (price * quantity);
    }

    double calculateDiscount() {
        if (total > 1500) return 0.20; // 20% discount
        if (total > 1000) return 0.10; // 10% discount
        if (total > 500) return 0.05;  // 5% discount
        return 0.0;
    }

    double getFinalTotal() {
        return total * (1 - calculateDiscount());
    }

    void saveBill() {
        try {
            String folderPath = "C:\\Users\\Abinash DAS\\Desktop\\New folder\\revenue";
            File folder = new File(folderPath);
            if (!folder.exists()) folder.mkdirs();

            String date = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss").format(new Date());
            String filename = folderPath + "\\" + customerName + "_bill_" + date + ".txt";
            try (BufferedWriter writer = new BufferedWriter(new FileWriter(filename))) {
                writer.write("Bill for: " + customerName + "\n");
                for (String item : orderedItems) {
                    writer.write(item + "\n");
                }
                writer.write("\nSubtotal: Rs. " + total);
                writer.write("\nDiscount: " + (calculateDiscount() * 100) + "%");
                writer.write("\nTotal: Rs. " + getFinalTotal());
                writer.write("\n\nThank you for ordering!");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}