HesamGhazi/WS-10-Database
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WS-10 is complete

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HesamGhazi
2026-07-17 10:56:41 +03:30
parent 00f990c653
commit c93d1b89a2
20 changed files with 587 additions and 247 deletions
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.idea/.gitignore
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+10
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# Default ignored files
/shelf/
/workspace.xml
# Ignored default folder with query files
/queries/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml
# Editor-based HTTP Client requests
/httpRequests/
.idea/compiler.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CompilerConfiguration">
<annotationProcessing>
<profile name="Maven default annotation processors profile" enabled="true">
<sourceOutputDir name="target/generated-sources/annotations" />
<sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
<outputRelativeToContentRoot value="true" />
<module name="WS-10-Database" />
</profile>
</annotationProcessing>
</component>
</project>
.idea/encodings.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Encoding">
<file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
</component>
</project>
.idea/jarRepositories.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="RemoteRepositoriesConfiguration">
<remote-repository>
<option name="id" value="central" />
<option name="name" value="Central Repository" />
<option name="url" value="https://repo.maven.apache.org/maven2" />
</remote-repository>
<remote-repository>
<option name="id" value="central" />
<option name="name" value="Maven Central repository" />
<option name="url" value="https://repo1.maven.org/maven2" />
</remote-repository>
<remote-repository>
<option name="id" value="jboss.community" />
<option name="name" value="JBoss Community repository" />
<option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
</remote-repository>
</component>
</project>
.idea/misc.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ExternalStorageConfigurationManager" enabled="true" />
<component name="MavenProjectsManager">
<option name="originalFiles">
<list>
<option value="$PROJECT_DIR$/pom.xml" />
</list>
</option>
</component>
<component name="ProjectRootManager" version="2" project-jdk-name="25" project-jdk-type="JavaSDK" />
</project>
.idea/vcs.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="" vcs="Git" />
</component>
</project>
database.sql
+35 -122
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@@ -1,141 +1,54 @@
-- Restaurant Database Management System
--
-- Instructions:
-- 1. Create all required tables.
-- 2. Design appropriate PRIMARY KEY and FOREIGN KEY relationships.
-- 3. Add suitable constraints based on the requirements.
-- 4. Insert initial mock data.
-- 5. Insert at least 3 menu items.
-- 6. The script should be executable from start to finish without errors.
-- =======================================================
-- USER TABLE
-- =======================================================
--
-- Represents customers using the system.
--
-- Required information:
-- - Unique identifier
-- - Username
-- - Password
-- - Email (optional)
--
-- Requirements:
-- - Each user must have a unique identifier.
-- - Usernames must be unique.
-- - Username and password are required.
-- - Passwords should not be stored in plain text.
--
-- CREATE TABLE ...
CREATE TABLE IF NOT EXISTS users (
id SERIAL PRIMARY KEY,
username VARCHAR(50) NOT NULL UNIQUE,
password VARCHAR(256) NOT NULL,
email VARCHAR(100)
);
-- =======================================================
-- MENU ITEM TABLE
-- =======================================================
--
-- Represents available food and drink items.
--
-- Required information:
-- - Unique identifier
-- - Name
-- - Description (optional)
-- - Price
-- - Category (optional)
--
-- Requirements:
-- - Each menu item must have a unique identifier.
-- - Name is required.
-- - Price must always be positive.
--
-- CREATE TABLE ...
CREATE TABLE IF NOT EXISTS menu_items (
id SERIAL PRIMARY KEY,
name VARCHAR(100) NOT NULL,
description TEXT,
price DECIMAL(10, 2) NOT NULL CHECK (price > 0),
category VARCHAR(50)
);
-- =======================================================
-- ORDER TABLE
-- =======================================================
--
-- Represents orders placed by customers.
--
-- Required information:
-- - Unique identifier
-- - Reference to customer
-- - Creation date and time
-- - Total price
--
-- Requirements:
-- - Each order must belong to exactly one user.
-- - A user can have multiple orders.
-- - The relationship between User and Order must be implemented.
--
-- Note:
-- Avoid using reserved SQL keywords as table names.
-- Consider using a name such as "orders" or "customer_orders".
--
-- CREATE TABLE ...
CREATE TABLE IF NOT EXISTS orders (
id SERIAL PRIMARY KEY,
user_id INT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
total_price DECIMAL(10, 2) NOT NULL CHECK (total_price >= 0),
CONSTRAINT fk_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);
-- =======================================================
-- ORDER DETAIL TABLE
-- =======================================================
--
-- Represents items inside an order.
--
-- Required information:
-- - Unique identifier
-- - Reference to an order
-- - Reference to a menu item
-- - Quantity
-- - Item price at purchase time
--
-- Requirements:
-- - Each detail record must belong to one order.
-- - Each detail record must reference one menu item.
-- - Quantity must always be greater than zero.
-- - Store the item's price at the moment of purchase.
--
-- CREATE TABLE ...
CREATE TABLE IF NOT EXISTS order_details (
id SERIAL PRIMARY KEY,
order_id INT NOT NULL,
menu_item_id INT NOT NULL,
quantity INT NOT NULL CHECK (quantity > 0),
price DECIMAL(10, 2) NOT NULL CHECK (price >= 0),
CONSTRAINT fk_order FOREIGN KEY (order_id) REFERENCES orders(id) ON DELETE CASCADE,
CONSTRAINT fk_menu_item FOREIGN KEY (menu_item_id) REFERENCES menu_items(id) ON DELETE RESTRICT
);
-- =======================================================
-- INITIAL MENU DATA
-- =======================================================
--
-- Insert at least 3 food or drink items.
--
-- Example categories:
-- - Pizza
-- - Burger
-- - Pasta
-- - Drink
--
-- INSERT INTO ...
-- =======================================================
-- OPTIONAL TEST DATA
-- =======================================================
--
-- You may insert sample users and orders for testing.
-- This section is optional.
--
-- INSERT INTO ...
-- =======================================================
-- VERIFICATION QUERIES
-- =======================================================
--
-- Uncomment these queries to verify your database.
--
-- SELECT * FROM ...;
-- SELECT * FROM ...;
-- SELECT * FROM ...;
-- SELECT * FROM ...;
INSERT INTO menu_items (name, description, price, category) VALUES
('Margherita Pizza', 'Classic tomato sauce, fresh mozzarella, and basil', 10.00, 'Pizza'),
('Cheeseburger', 'Beef patty, cheddar cheese, lettuce, tomato, and burger sauce', 8.00, 'Burger'),
('Fettuccine Alfredo', 'Rich and creamy parmesan sauce over pasta', 12.00, 'Pasta'),
('Coca Cola', 'Chilled carbonated soft drink', 2.50, 'Drink')
ON CONFLICT DO NOTHING;
src/main/java/dev/dao/MenuItemDao.java
+39 -11
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@@ -1,25 +1,53 @@
package dev.dao;
import dev.database.DatabaseConnection;
import dev.model.MenuItem;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class MenuItemDao {
public List<MenuItem> findAll() {
// TODO:
// Retrieve all menu items
return null;
List<MenuItem> items = new ArrayList<>();
String sql = "SELECT * FROM menu_items ORDER BY id";
try (Connection conn = DatabaseConnection.getConnection();
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(sql)) {
while (rs.next()) {
items.add(new MenuItem(
rs.getInt("id"),
rs.getString("name"),
rs.getString("description"),
rs.getDouble("price"),
rs.getString("category")
));
}
} catch (SQLException e) {
System.err.println("Database error while fetching menu items: " + e.getMessage());
}
return items;
}
public MenuItem findById(int id) {
// TODO:
// Find menu item by id
String sql = "SELECT * FROM menu_items WHERE id = ?";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setInt(1, id);
try (ResultSet rs = stmt.executeQuery()) {
if (rs.next()) {
return new MenuItem(
rs.getInt("id"),
rs.getString("name"),
rs.getString("description"),
rs.getDouble("price"),
rs.getString("category")
);
}
}
} catch (SQLException e) {
System.err.println("Database error while finding menu item: " + e.getMessage());
}
return null;
}
}
src/main/java/dev/dao/OrderDao.java
+36 -9
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@@ -1,25 +1,52 @@
package dev.dao;
import dev.database.DatabaseConnection;
import dev.model.Order;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class OrderDao {
public int save(Order order) {
// TODO:
// Insert order and return generated id
String sql = "INSERT INTO orders (user_id, total_price) VALUES (?, ?)";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
stmt.setInt(1, order.getUserId());
stmt.setDouble(2, order.getTotalPrice());
stmt.executeUpdate();
try (ResultSet generatedKeys = stmt.getGeneratedKeys()) {
if (generatedKeys.next()) {
return generatedKeys.getInt(1);
}
}
} catch (SQLException e) {
System.err.println("Database error while saving order: " + e.getMessage());
}
return -1;
}
public List<Order> findByUserId(int userId) {
// TODO:
// Retrieve all orders of a user
return null;
List<Order> orders = new ArrayList<>();
String sql = "SELECT * FROM orders WHERE user_id = ? ORDER BY created_at DESC";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setInt(1, userId);
try (ResultSet rs = stmt.executeQuery()) {
while (rs.next()) {
orders.add(new Order(
rs.getInt("id"),
rs.getInt("user_id"),
rs.getTimestamp("created_at").toLocalDateTime(),
rs.getDouble("total_price")
));
}
}
} catch (SQLException e) {
System.err.println("Database error while searching history: " + e.getMessage());
}
return orders;
}
}
src/main/java/dev/dao/OrderDetailDao.java
+34 -11
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@@ -1,24 +1,47 @@
package dev.dao;
import dev.database.DatabaseConnection;
import dev.model.OrderDetail;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class OrderDetailDao {
public void save(OrderDetail detail) {
// TODO:
// Insert order detail
String sql = "INSERT INTO order_details (order_id, menu_item_id, quantity, price) VALUES (?, ?, ?, ?)";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setInt(1, detail.getOrderId());
stmt.setInt(2, detail.getMenuItemId());
stmt.setInt(3, detail.getQuantity());
stmt.setDouble(4, detail.getPrice());
stmt.executeUpdate();
} catch (SQLException e) {
System.err.println("Database error while saving order details: " + e.getMessage());
}
}
public List<OrderDetail> findByOrderId(int orderId) {
// TODO:
// Retrieve order details
return null;
List<OrderDetail> details = new ArrayList<>();
String sql = "SELECT * FROM order_details WHERE order_id = ?";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setInt(1, orderId);
try (ResultSet rs = stmt.executeQuery()) {
while (rs.next()) {
details.add(new OrderDetail(
rs.getInt("id"),
rs.getInt("order_id"),
rs.getInt("menu_item_id"),
rs.getInt("quantity"), // <-- Use rs.getInt("quantity") here
rs.getDouble("price")
));
}
}
} catch (SQLException e) {
System.err.println("Database error retrieving order details: " + e.getMessage());
}
return details;
}
}
src/main/java/dev/dao/UserDao.java
+29 -9
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@@ -1,23 +1,43 @@
package dev.dao;
import dev.database.DatabaseConnection;
import dev.model.User;
import java.sql.*;
public class UserDao {
public boolean save(User user) {
// TODO:
// Insert user into database
String sql = "INSERT INTO users (username, password, email) VALUES (?, ?, ?)";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setString(1, user.getUsername());
stmt.setString(2, user.getPassword());
stmt.setString(3, user.getEmail());
return stmt.executeUpdate() > 0;
} catch (SQLException e) {
System.err.println("Database error while registering: " + e.getMessage());
return false;
}
}
public User findByUsername(String username) {
// TODO:
// Find a user by username
String sql = "SELECT * FROM users WHERE username = ?";
try (Connection conn = DatabaseConnection.getConnection();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setString(1, username);
try (ResultSet rs = stmt.executeQuery()) {
if (rs.next()) {
return new User(
rs.getInt("id"),
rs.getString("username"),
rs.getString("password"),
rs.getString("email")
);
}
}
} catch (SQLException e) {
System.err.println("Database error while finding user: " + e.getMessage());
}
return null;
}
}
src/main/java/dev/database/DatabaseConnection.java
+6 -14
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@@ -1,27 +1,19 @@
package dev.database;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DatabaseConnection {
private static final String URL = "jdbc:postgresql://localhost:5432/restaurant_db"; // DB Server
private static final String USER = "postgres"; // Your Username
private static final String PASSWORD = "password"; // Your Password
private static final String URL = "jdbc:postgresql://localhost:5432/restaurant_db";
private static final String USER = "postgres";
private static final String PASSWORD = "2357";
private DatabaseConnection() {
}
public static Connection getConnection()
throws SQLException {
// TODO:
// Return a valid PostgreSQL connection
return null;
public static Connection getConnection() throws SQLException {
return DriverManager.getConnection(URL, USER, PASSWORD);
}
}
src/main/java/dev/model/MenuItem.java
+20 -5
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@@ -1,15 +1,30 @@
package dev.model;
public class MenuItem {
private int id;
private String name;
private String description;
private double price;
private String category;
public MenuItem() {}
public MenuItem(int id, String name, String description, double price, String category) {
this.id = id;
this.name = name;
this.description = description;
this.price = price;
this.category = category;
}
public int getId() { return id; }
public void setId(int id) { this.id = id; }
public String getName() { return name; }
public void setName(String name) { this.name = name; }
public String getDescription() { return description; }
public void setDescription(String description) { this.description = description; }
public double getPrice() { return price; }
public void setPrice(double price) { this.price = price; }
public String getCategory() { return category; }
public void setCategory(String category) { this.category = category; }
}
src/main/java/dev/model/Order.java
+16 -3
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@@ -5,11 +5,24 @@ import java.time.LocalDateTime;
public class Order {
private int id;
private int userId;
private LocalDateTime createdAt;
private double totalPrice;
public Order() {}
public Order(int id, int userId, LocalDateTime createdAt, double totalPrice) {
this.id = id;
this.userId = userId;
this.createdAt = createdAt;
this.totalPrice = totalPrice;
}
public int getId() { return id; }
public void setId(int id) { this.id = id; }
public int getUserId() { return userId; }
public void setUserId(int userId) { this.userId = userId; }
public LocalDateTime getCreatedAt() { return createdAt; }
public void setCreatedAt(LocalDateTime createdAt) { this.createdAt = createdAt; }
public double getTotalPrice() { return totalPrice; }
public void setTotalPrice(double totalPrice) { this.totalPrice = totalPrice; }
}
src/main/java/dev/model/OrderDetail.java
+20 -5
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@@ -1,15 +1,30 @@
package dev.model;
public class OrderDetail {
private int id;
private int orderId;
private int menuItemId;
private int quantity;
private double price;
public OrderDetail() {}
public OrderDetail(int id, int orderId, int menuItemId, int quantity, double price) {
this.id = id;
this.orderId = orderId;
this.menuItemId = menuItemId;
this.quantity = quantity;
this.price = price;
}
public int getId() { return id; }
public void setId(int id) { this.id = id; }
public int getOrderId() { return orderId; }
public void setOrderId(int orderId) { this.orderId = orderId; }
public int getMenuItemId() { return menuItemId; }
public void setMenuItemId(int menuItemId) { this.menuItemId = menuItemId; }
public int getQuantity() { return quantity; }
public void setQuantity(int quantity) { this.quantity = quantity; }
public double getPrice() { return price; }
public void setPrice(double price) { this.price = price; }
}
src/main/java/dev/model/User.java
+17 -4
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@@ -1,13 +1,26 @@
package dev.model;
public class User {
private int id;
private String username;
private String password;
private String email;
public User() {}
public User(int id, String username, String password, String email) {
this.id = id;
this.username = username;
this.password = password;
this.email = email;
}
public int getId() { return id; }
public void setId(int id) { this.id = id; }
public String getUsername() { return username; }
public void setUsername(String username) { this.username = username; }
public String getPassword() { return password; }
public void setPassword(String password) { this.password = password; }
public String getEmail() { return email; }
public void setEmail(String email) { this.email = email; }
}
src/main/java/dev/service/AuthService.java
+33 -9
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@@ -1,23 +1,47 @@
package dev.service;
import dev.dao.UserDao;
import dev.model.User;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class AuthService {
private final UserDao userDao = new UserDao();
public boolean register(String username, String password, String email) {
// TODO:
// Validate and register user
if (username == null || username.trim().isEmpty() || password == null || password.trim().isEmpty()) {
return false;
}
if (userDao.findByUsername(username) != null) {
System.out.println("Username already exists!");
return false;
}
String hashedPassword = hashPassword(password);
User user = new User(0, username, hashedPassword, email);
return userDao.save(user);
}
public User login(String username, String password) {
// TODO:
// Authenticate user
User user = userDao.findByUsername(username);
if (user != null && user.getPassword().equals(hashPassword(password))) {
return user;
}
return null;
}
private String hashPassword(String password) {
try {
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] encodedhash = digest.digest(password.getBytes());
StringBuilder hexString = new StringBuilder();
for (byte b : encodedhash) {
String hex = Integer.toHexString(0xff & b);
if (hex.length() == 1) hexString.append('0');
hexString.append(hex);
}
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException("Error securely processing password.", e);
}
}
}
src/main/java/dev/service/MenuService.java
+15 -5
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@@ -1,12 +1,22 @@
package dev.service;
import dev.dao.MenuItemDao;
import dev.model.MenuItem;
import java.util.List;
public class MenuService {
private final MenuItemDao menuItemDao = new MenuItemDao();
public void showMenu() {
// TODO:
// Display menu items
List<MenuItem> items = menuItemDao.findAll();
System.out.println("\n--- MENU ---");
System.out.printf("%-4s | %-20s | %-40s | %-8s | %-10s\n", "ID", "Name", "Description", "Price", "Category");
System.out.println("-".repeat(90));
for (MenuItem item : items) {
System.out.printf("%-4d | %-20s | %-40s | $%-7.2f | %-10s\n",
item.getId(), item.getName(), item.getDescription(), item.getPrice(), item.getCategory());
}
System.out.println("-".repeat(90));
}
}
src/main/java/dev/service/OrderService.java
+109 -8
View File
@@ -1,26 +1,127 @@
package dev.service;
import dev.dao.MenuItemDao;
import dev.dao.OrderDao;
import dev.dao.OrderDetailDao;
import dev.model.MenuItem;
import dev.model.Order;
import dev.model.OrderDetail;
import java.util.*;
public class OrderService {
private final MenuItemDao menuItemDao = new MenuItemDao();
private final OrderDao orderDao = new OrderDao();
private final OrderDetailDao orderDetailDao = new OrderDetailDao();
private final Scanner scanner = new Scanner(System.in);
public void placeOrder(int userId) {
Map<Integer, Integer> cart = new HashMap<>(); // MenuItemID -> Quantity
// TODO:
// Create order
while (true) {
System.out.print("Enter the ID of the item to add (or 0 to complete order): ");
int itemId = scanner.nextInt();
if (itemId == 0) {
break;
}
MenuItem item = menuItemDao.findById(itemId);
if (item == null) {
System.out.println("Invalid Menu Item ID! Try again.");
continue;
}
System.out.print("Enter quantity: ");
int qty = scanner.nextInt();
if (qty <= 0) {
System.out.println("Quantity must be greater than zero!");
continue;
}
cart.put(itemId, cart.getOrDefault(itemId, 0) + qty);
System.out.println("Added " + qty + "x " + item.getName() + " to cart.");
}
if (cart.isEmpty()) {
System.out.println("Cart is empty. Order cancelled.");
return;
}
// Calculate Grand Total
double grandTotal = 0;
List<OrderDetail> details = new ArrayList<>();
for (Map.Entry<Integer, Integer> entry : cart.entrySet()) {
MenuItem item = menuItemDao.findById(entry.getKey());
double subTotal = item.getPrice() * entry.getValue();
grandTotal += subTotal;
OrderDetail detail = new OrderDetail();
detail.setMenuItemId(item.getId());
detail.setQuantity(entry.getValue());
detail.setPrice(item.getPrice()); // Secure current purchase price
details.add(detail);
}
// Persist Order
Order order = new Order();
order.setUserId(userId);
order.setTotalPrice(grandTotal);
int orderId = orderDao.save(order);
if (orderId == -1) {
System.out.println("An issue occurred. Order could not be created.");
return;
}
// Persist Order Details
for (OrderDetail detail : details) {
detail.setOrderId(orderId);
orderDetailDao.save(detail);
}
System.out.println("\nOrder registered successfully!");
printReceipt(orderId);
}
public void printReceipt(int orderId) {
List<OrderDetail> details = orderDetailDao.findByOrderId(orderId);
if (details == null || details.isEmpty()) {
System.out.println("Receipt not found.");
return;
}
// TODO:
// Print order receipt
System.out.println("\n=======================================");
System.out.println(" 🧾 ORDER RECEIPT ");
System.out.println("=======================================");
System.out.printf("%-20s %-5s %-8s %-8s\n", "Item", "Qty", "Unit", "Total");
System.out.println("-".repeat(43));
double total = 0;
for (OrderDetail detail : details) {
MenuItem item = menuItemDao.findById(detail.getMenuItemId());
double lineTotal = detail.getPrice() * detail.getQuantity();
total += lineTotal;
System.out.printf("%-20s %-5d $%-7.2f $%-7.2f\n",
item.getName(), detail.getQuantity(), detail.getPrice(), lineTotal);
}
System.out.println("-".repeat(43));
System.out.printf("Final Total: $%-7.2f\n", total);
System.out.println("=======================================\n");
}
public void showOrderHistory(int userId) {
// TODO:
// Display user's order history
List<Order> orders = orderDao.findByUserId(userId);
if (orders == null || orders.isEmpty()) {
System.out.println("No past orders found.");
return;
}
System.out.println("\n=== PAST ORDERS ===");
for (Order o : orders) {
System.out.printf("Order #%d | Date: %s | Total Spent: $%.2f\n",
o.getId(), o.getCreatedAt().toString(), o.getTotalPrice());
}
System.out.println("===================\n");
}
}
src/main/java/dev/ui/ConsoleMenu.java
+89 -11
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@@ -1,44 +1,122 @@
package dev.ui;
import dev.model.User;
import dev.service.AuthService;
import dev.service.MenuService;
import dev.service.OrderService;
import java.util.Scanner;
public class ConsoleMenu {
private final Scanner scanner =
new Scanner(System.in);
private final Scanner scanner = new Scanner(System.in);
private final AuthService authService = new AuthService();
private final MenuService menuService = new MenuService();
private final OrderService orderService = new OrderService();
private User currentUser = null;
public void start() {
while (true) {
if (currentUser == null) {
showAuthMenu();
} else {
showMainMenu();
}
}
}
private void showAuthMenu() {
System.out.println();
System.out.println("===== JAVA PIZZERIA =====");
System.out.println("1. Login");
System.out.println("2. Register");
System.out.println("3. Exit");
System.out.print("Choose an option: ");
int choice = scanner.nextInt();
scanner.nextLine(); // Clear buffer
switch (choice) {
case 1:
// TODO
handleLogin();
break;
case 2:
// TODO
handleRegister();
break;
case 3:
return;
System.out.println("Goodbye!");
System.exit(0);
default:
System.out.println("Invalid choice");
}
}
private void showMainMenu() {
System.out.println();
System.out.println("===== " + currentUser.getUsername().toUpperCase() + "'S PORTAL =====");
System.out.println("1. View Menu");
System.out.println("2. Place New Order");
System.out.println("3. Order History");
System.out.println("4. Logout");
System.out.print("Choose an option: ");
int choice = scanner.nextInt();
scanner.nextLine(); // Clear buffer
switch (choice) {
case 1:
menuService.showMenu();
break;
case 2:
menuService.showMenu();
orderService.placeOrder(currentUser.getId());
break;
case 3:
orderService.showOrderHistory(currentUser.getId());
break;
case 4:
System.out.println("Logging out...");
currentUser = null;
break;
default:
System.out.println("Invalid choice");
}
}
private void handleLogin() {
System.out.println("\n[Login]");
System.out.print("Enter username: ");
String username = scanner.nextLine();
System.out.print("Enter password: ");
String password = scanner.nextLine();
User user = authService.login(username, password);
if (user != null) {
currentUser = user;
System.out.println("Login successful! Welcome, " + user.getUsername());
} else {
System.out.println("Invalid username or password!");
}
}
private void handleRegister() {
System.out.println("\n[Registration]");
System.out.print("Enter a unique username: ");
String username = scanner.nextLine();
System.out.print("Enter password: ");
String password = scanner.nextLine();
System.out.print("Enter email (Optional, press Enter to skip): ");
String email = scanner.nextLine();
if (email.trim().isEmpty()) {
email = null;
}
boolean success = authService.register(username, password, email);
if (success) {
System.out.println("Registration successful! You can now log in.");
} else {
System.out.println("Registration failed. Try a different username.");
}
}
}