Merge pull request 'Implement todos for database and management service' (#1) from develop into main

Reviewed-on: saeedjamali/WS-10-Database-Saeed#1

.idea/.gitignore

@@ -0,0 +1,10 @@
+# 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

@@ -0,0 +1,13 @@
+<?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

@@ -0,0 +1,7 @@
+<?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

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <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>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://mirror-maven.runflare.com/maven2" />
+    </remote-repository>
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,12 @@
+<?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="openjdk-25" project-jdk-type="JavaSDK" />
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

database.sql

@@ -8,7 +8,10 @@
 -- 5. Insert at least 3 menu items.
 -- 6. The script should be executable from start to finish without errors.
 
-
+DROP TABLE IF EXISTS order_details CASCADE;
+DROP TABLE IF EXISTS orders CASCADE;
+DROP TABLE IF EXISTS menu_items CASCADE;
+DROP TABLE IF EXISTS users CASCADE;
 
 -- =======================================================
 -- USER TABLE
@@ -28,8 +31,12 @@
 -- - Username and password are required.
 -- - Passwords should not be stored in plain text.
 --
--- CREATE TABLE ...
+CREATE TABLE users (
-
+    id SERIAL PRIMARY KEY,
+    username VARCHAR(50) UNIQUE NOT NULL,
+    password VARCHAR(255) NOT NULL,
+    email VARCHAR(100)
+);
 
 
 -- =======================================================
@@ -50,8 +57,13 @@
 -- - Name is required.
 -- - Price must always be positive.
 --
--- CREATE TABLE ...
+CREATE TABLE menu_items (
-
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(100) NOT NULL,
+    description TEXT,
+    price NUMERIC(10, 2) NOT NULL CHECK (price > 0),
+    category VARCHAR(50)
+);
 
 
 -- =======================================================
@@ -75,8 +87,12 @@
 -- Avoid using reserved SQL keywords as table names.
 -- Consider using a name such as "orders" or "customer_orders".
 --
--- CREATE TABLE ...
+CREATE TABLE orders (
-
+    id SERIAL PRIMARY KEY,
+    user_id INT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TIMESTAMP NOT NULL,
+    total_price NUMERIC(10, 2) NOT NULL DEFAULT 0.00
+);
 
 
 -- =======================================================
@@ -98,8 +114,13 @@
 -- - Quantity must always be greater than zero.
 -- - Store the item's price at the moment of purchase.
 --
--- CREATE TABLE ...
+CREATE TABLE order_details (
-
+    id SERIAL PRIMARY KEY,
+    order_id INT NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
+    menu_item_id INT NOT NULL REFERENCES menu_items(id),
+    quantity INT NOT NULL CHECK (quantity > 0),
+    price NUMERIC(10, 2) NOT NULL
+);
 
 
 -- =======================================================
@@ -114,8 +135,11 @@
 -- - Pasta
 -- - Drink
 --
--- INSERT INTO ...
+INSERT INTO menu_items (name, description, price, category) VALUES
-
+('Pizza', 'Delicious cheese pizza with tomato sauce', 10.00, 'Pizza'),
+('Burger', 'Juicy beef burger with lettuce and tomato', 8.00, 'Burger'),
+('Pasta', 'Rich creamy Alfredo pasta', 12.00, 'Pasta'),
+('Soda', 'Cold carbonated drink', 2.50, 'Drink');
 
 
 -- =======================================================
@@ -125,8 +149,6 @@
 -- You may insert sample users and orders for testing.
 -- This section is optional.
 --
--- INSERT INTO ...
-
 
 
 -- =======================================================
@@ -135,7 +157,7 @@
 --
 -- Uncomment these queries to verify your database.
 --
--- SELECT * FROM ...;
+SELECT * FROM users;
--- SELECT * FROM ...;
+SELECT * FROM menu_items;
--- SELECT * FROM ...;
+SELECT * FROM orders;
--- SELECT * FROM ...;
+SELECT * FROM order_details;

src/main/java/dev/dao/MenuItemDao.java

@@ -1,25 +1,57 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.MenuItem;
 
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
 import java.util.List;
 
 public class MenuItemDao {
 
     public List<MenuItem> findAll() {
-
+        List<MenuItem> items = new ArrayList<>();
-        // TODO:
+        String sql = "SELECT * FROM menu_items";
-        // Retrieve all menu items
+        try (Connection conn = DatabaseConnection.getConnection();
-
+             PreparedStatement stmt = conn.prepareStatement(sql);
-        return null;
+             ResultSet rs = stmt.executeQuery()) {
+            while (rs.next()) {
+                MenuItem item = new MenuItem();
+                item.setId(rs.getInt("id"));
+                item.setName(rs.getString("name"));
+                item.setDescription(rs.getString("description"));
+                item.setPrice(rs.getDouble("price"));
+                item.setCategory(rs.getString("category"));
+                items.add(item);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return items;
     }
 
     public MenuItem findById(int id) {
-
+        String sql = "SELECT * FROM menu_items WHERE id = ?";
-        // TODO:
+        try (Connection conn = DatabaseConnection.getConnection();
-        // Find menu item by id
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
-
+            stmt.setInt(1, id);
+            try (ResultSet rs = stmt.executeQuery()) {
+                if (rs.next()) {
+                    MenuItem item = new MenuItem();
+                    item.setId(rs.getInt("id"));
+                    item.setName(rs.getString("name"));
+                    item.setDescription(rs.getString("description"));
+                    item.setPrice(rs.getDouble("price"));
+                    item.setCategory(rs.getString("category"));
+                    return item;
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
         return null;
     }
-
 }

src/main/java/dev/dao/OrderDao.java

@@ -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) {
-
+        String sql = "INSERT INTO orders (user_id, created_at, total_price) VALUES (?, ?, ?)";
-        // TODO:
+        try (Connection conn = DatabaseConnection.getConnection();
-        // Insert order and return generated id
+             PreparedStatement stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
-
+            stmt.setInt(1, order.getUserId());
+            stmt.setTimestamp(2, Timestamp.valueOf(order.getCreatedAt()));
+            stmt.setDouble(3, order.getTotalPrice());
+            stmt.executeUpdate();
+            try (ResultSet keys = stmt.getGeneratedKeys()) {
+                if (keys.next()) {
+                    return keys.getInt(1);
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
         return -1;
     }
 
     public List<Order> findByUserId(int userId) {
-
+        List<Order> orders = new ArrayList<>();
-        // TODO:
+        String sql = "SELECT * FROM orders WHERE user_id = ? ORDER BY created_at DESC";
-        // Retrieve all orders of a user
+        try (Connection conn = DatabaseConnection.getConnection();
-
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
-        return null;
+            stmt.setInt(1, userId);
+            try (ResultSet rs = stmt.executeQuery()) {
+                while (rs.next()) {
+                    Order order = new Order();
+                    order.setId(rs.getInt("id"));
+                    order.setUserId(rs.getInt("user_id"));
+                    order.setCreatedAt(rs.getTimestamp("created_at").toLocalDateTime());
+                    order.setTotalPrice(rs.getDouble("total_price"));
+                    orders.add(order);
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return orders;
     }
-
 }

src/main/java/dev/dao/OrderDetailDao.java

@@ -1,24 +1,51 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.OrderDetail;
 
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
 import java.util.List;
 
 public class OrderDetailDao {
 
     public void save(OrderDetail detail) {
-
+        String sql = "INSERT INTO order_details (order_id, menu_item_id, quantity, price) VALUES (?, ?, ?, ?)";
-        // TODO:
+        try (Connection conn = DatabaseConnection.getConnection();
-        // Insert order detail
+             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) {
+            e.printStackTrace();
+        }
     }
 
     public List<OrderDetail> findByOrderId(int orderId) {
-
+        List<OrderDetail> details = new ArrayList<>();
-        // TODO:
+        String sql = "SELECT * FROM order_details WHERE order_id = ?";
-        // Retrieve order details
+        try (Connection conn = DatabaseConnection.getConnection();
-
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
-        return null;
+            stmt.setInt(1, orderId);
+            try (ResultSet rs = stmt.executeQuery()) {
+                while (rs.next()) {
+                    OrderDetail detail = new OrderDetail();
+                    detail.setId(rs.getInt("id"));
+                    detail.setOrderId(rs.getInt("order_id"));
+                    detail.setMenuItemId(rs.getInt("menu_item_id"));
+                    detail.setQuantity(rs.getInt("quantity"));
+                    detail.setPrice(rs.getDouble("price"));
+                    details.add(detail);
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return details;
     }
-
 }

src/main/java/dev/dao/UserDao.java

@@ -1,23 +1,47 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.User;
 
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
 public class UserDao {
 
     public boolean save(User user) {
-
+        String sql = "INSERT INTO users (username, password, email) VALUES (?, ?, ?)";
-        // TODO:
+        try (Connection conn = DatabaseConnection.getConnection();
-        // Insert user into database
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
-
+            stmt.setString(1, user.getUsername());
+            stmt.setString(2, user.getPassword());
+            stmt.setString(3, user.getEmail());
+            int affectedRows = stmt.executeUpdate();
+            return affectedRows > 0;
+        } catch (SQLException e) {
             return false;
         }
+    }
 
     public User findByUsername(String username) {
-
+        String sql = "SELECT * FROM users WHERE username = ?";
-        // TODO:
+        try (Connection conn = DatabaseConnection.getConnection();
-        // Find a user by username
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
-
+            stmt.setString(1, username);
+            try (ResultSet rs = stmt.executeQuery()) {
+                if (rs.next()) {
+                    User user = new User();
+                    user.setId(rs.getInt("id"));
+                    user.setUsername(rs.getString("username"));
+                    user.setPassword(rs.getString("password"));
+                    user.setEmail(rs.getString("email"));
+                    return user;
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
         return null;
     }
-
 }

src/main/java/dev/database/DatabaseConnection.java

@@ -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 URL = "jdbc:postgresql://localhost:5432/restaurant_db";
-
+    private static final String USER = "postgres";
-    private static final String USER = "postgres"; // Your Username
+    private static final String PASSWORD = "password";
-
-    private static final String PASSWORD = "password"; // Your Password
 
     private DatabaseConnection() {
-
     }
 
-    public static Connection getConnection()
+    public static Connection getConnection() throws SQLException {
-            throws SQLException {
+        return DriverManager.getConnection(URL, USER, PASSWORD);
-
-        // TODO:
-        // Return a valid PostgreSQL connection
-
-        return null;
     }
-
 }

src/main/java/dev/model/MenuItem.java

@@ -3,13 +3,59 @@ 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

@@ -5,11 +5,49 @@ 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

@@ -3,13 +3,59 @@ 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

@@ -3,11 +3,49 @@ 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

@@ -1,23 +1,52 @@
 package dev.service;
 
+import dev.dao.UserDao;
 import dev.model.User;
 
+import java.security.MessageDigest;
+import java.nio.charset.StandardCharsets;
+
 public class AuthService {
 
+    private final UserDao userDao = new UserDao();
+
     public boolean register(String username, String password, String email) {
-
+        if (username == null || username.trim().isEmpty() || password == null || password.trim().isEmpty()) {
-        // TODO:
-        // Validate and register user
-
             return false;
         }
+        if (userDao.findByUsername(username) != null) {
+            return false;
+        }
+        User user = new User();
+        user.setUsername(username);
+        user.setPassword(hashPassword(password));
+        user.setEmail(email);
+        return userDao.save(user);
+    }
 
     public User login(String username, String password) {
-
+        User user = userDao.findByUsername(username);
-        // TODO:
+        if (user != null && user.getPassword().equals(hashPassword(password))) {
-        // Authenticate user
+            return user;
-
+        }
         return null;
     }
 
+    private String hashPassword(String password) {
+        try {
+            MessageDigest digest = MessageDigest.getInstance("SHA-256");
+            byte[] hash = digest.digest(password.getBytes(StandardCharsets.UTF_8));
+            StringBuilder hexString = new StringBuilder();
+            for (byte b : hash) {
+                String hex = Integer.toHexString(0xff & b);
+                if (hex.length() == 1) {
+                    hexString.append('0');
+                }
+                hexString.append(hex);
+            }
+            return hexString.toString();
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
 }

src/main/java/dev/service/MenuService.java

@@ -1,12 +1,23 @@
 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() {
-
+        List<MenuItem> items = menuItemDao.findAll();
-        // TODO:
+        System.out.println("\n--- MENU ---");
-        // Display menu items
+        for (MenuItem item : items) {
-
+            System.out.printf("%d. %s - $%.2f (%s)\n", item.getId(), item.getName(), item.getPrice(), item.getCategory());
+            if (item.getDescription() != null && !item.getDescription().isEmpty()) {
+                System.out.println("   " + item.getDescription());
+            }
+        }
+        System.out.println("------------");
     }
-
 }

src/main/java/dev/service/OrderService.java

@@ -1,26 +1,128 @@
 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.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
 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) {
+        List<MenuItem> items = menuItemDao.findAll();
+        if (items.isEmpty()) {
+            System.out.println("No menu items are currently available.");
+            return;
+        }
 
-        // TODO:
+        System.out.println("\n[Placing Order]");
-        // Create order
+        System.out.println("Available Items:");
+        for (MenuItem item : items) {
+            System.out.printf("%d. %s - $%.2f\n", item.getId(), item.getName(), item.getPrice());
+        }
 
+        List<OrderDetail> cart = new ArrayList<>();
+        double total = 0.0;
+
+        while (true) {
+            System.out.print("\nEnter the ID of the item to add (or 0 to finish): ");
+            int itemId = scanner.nextInt();
+            if (itemId == 0) {
+                break;
+            }
+
+            MenuItem selectedItem = menuItemDao.findById(itemId);
+            if (selectedItem == null) {
+                System.out.println("Invalid item ID.");
+                continue;
+            }
+
+            System.out.print("Enter quantity: ");
+            int quantity = scanner.nextInt();
+            if (quantity <= 0) {
+                System.out.println("Quantity must be greater than zero.");
+                continue;
+            }
+
+            OrderDetail detail = new OrderDetail();
+            detail.setMenuItemId(selectedItem.getId());
+            detail.setQuantity(quantity);
+            detail.setPrice(selectedItem.getPrice());
+
+            cart.add(detail);
+            total += selectedItem.getPrice() * quantity;
+            System.out.printf("Added %dx %s to your cart.\n", quantity, selectedItem.getName());
+        }
+
+        if (cart.isEmpty()) {
+            System.out.println("No items selected. Order canceled.");
+            return;
+        }
+
+        Order order = new Order();
+        order.setUserId(userId);
+        order.setCreatedAt(LocalDateTime.now());
+        order.setTotalPrice(total);
+
+        int orderId = orderDao.save(order);
+        if (orderId != -1) {
+            for (OrderDetail detail : cart) {
+                detail.setOrderId(orderId);
+                orderDetailDao.save(detail);
+            }
+            printReceipt(orderId);
+            System.out.println("Order saved successfully!");
+        } else {
+            System.out.println("An error occurred while saving the order.");
+        }
     }
 
     public void printReceipt(int orderId) {
+        List<OrderDetail> details = orderDetailDao.findByOrderId(orderId);
+        if (details.isEmpty()) {
+            System.out.println("No records found for the requested receipt.");
+            return;
+        }
 
-        // TODO:
+        System.out.println("\n[Order Summary / Receipt]");
-        // Print order receipt
+        System.out.println("---------------------------------------");
-
+        System.out.printf("%-15s %-7s %-9s %-7s\n", "Item", "Qty", "Unit", "Total");
+        System.out.println("---------------------------------------");
+        double grandTotal = 0.0;
+        for (OrderDetail detail : details) {
+            MenuItem item = menuItemDao.findById(detail.getMenuItemId());
+            String name = item != null ? item.getName() : "Unknown";
+            double total = detail.getPrice() * detail.getQuantity();
+            grandTotal += total;
+            System.out.printf("%-15s %-7d $%-8.2f $%-7.2f\n", name, detail.getQuantity(), detail.getPrice(), total);
+        }
+        System.out.println("---------------------------------------");
+        System.out.printf("Final Total: $%.2f\n", grandTotal);
     }
 
     public void showOrderHistory(int userId) {
-
+        List<Order> orders = orderDao.findByUserId(userId);
-        // TODO:
+        if (orders.isEmpty()) {
-        // Display user's order history
+            System.out.println("No past orders found.");
-
+            return;
         }
 
+        System.out.println("\n--- ORDER HISTORY ---");
+        for (Order order : orders) {
+            System.out.printf("Order ID: %d | Date: %s | Total Spent: $%.2f\n",
+                    order.getId(), order.getCreatedAt().toString(), order.getTotalPrice());
+        }
+        System.out.println("---------------------");
+    }
 }

src/main/java/dev/ui/ConsoleMenu.java

@@ -1,44 +1,121 @@
 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 =
+    private final Scanner scanner = new Scanner(System.in);
-            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) {
                 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: ");
 
+                if (!scanner.hasNextInt()) {
+                    scanner.next();
+                    System.out.println("Invalid choice");
+                    continue;
+                }
                 int choice = scanner.nextInt();
+                scanner.nextLine();
 
                 switch (choice) {
-
                     case 1:
-                    // TODO
+                        handleLogin();
                         break;
-
                     case 2:
-                    // TODO
+                        handleRegister();
                         break;
-
                     case 3:
                         return;
-
                     default:
                         System.out.println("Invalid choice");
+                }
+            } else {
+                System.out.println();
+                System.out.println("===== MAIN MENU =====");
+                System.out.println("1. View Menu");
+                System.out.println("2. Place a New Order");
+                System.out.println("3. View Order History");
+                System.out.println("4. Logout");
+                System.out.print("Choose an option: ");
 
+                if (!scanner.hasNextInt()) {
+                    scanner.next();
+                    System.out.println("Invalid choice");
+                    continue;
+                }
+                int choice = scanner.nextInt();
+                scanner.nextLine();
+
+                switch (choice) {
+                    case 1:
+                        menuService.showMenu();
+                        break;
+                    case 2:
+                        orderService.placeOrder(currentUser.getId());
+                        break;
+                    case 3:
+                        orderService.showOrderHistory(currentUser.getId());
+                        break;
+                    case 4:
+                        currentUser = null;
+                        System.out.println("Successfully logged out.");
+                        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, " + currentUser.getUsername());
+        } else {
+            System.out.println("Invalid username or password.");
+        }
     }
 
+    private void handleRegister() {
+        System.out.println("\n[Register New Account]");
+        System.out.print("Enter 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. The username may already exist or input was invalid.");
+        }
+    }
 }