Workshop-10

database.sql

@@ -1,141 +1,56 @@
 -- Restaurant Database Management System
---
+
--- Instructions:
+DROP TABLE IF EXISTS order_details CASCADE;
--- 1. Create all required tables.
+DROP TABLE IF EXISTS orders CASCADE;
--- 2. Design appropriate PRIMARY KEY and FOREIGN KEY relationships.
+DROP TABLE IF EXISTS menu_items CASCADE;
--- 3. Add suitable constraints based on the requirements.
+DROP TABLE IF EXISTS users CASCADE;
--- 4. Insert initial mock data.
--- 5. Insert at least 3 menu items.
--- 6. The script should be executable from start to finish without errors.
 
 
-
+CREATE TABLE users (
--- =======================================================
+    id SERIAL PRIMARY KEY,
--- USER TABLE
+    username VARCHAR(50) UNIQUE NOT NULL,
--- =======================================================
+    password VARCHAR(255) NOT NULL,
---
+    email VARCHAR(100)
--- 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 menu_items (
--- =======================================================
+    id SERIAL PRIMARY KEY,
--- MENU ITEM TABLE
+    name VARCHAR(100) NOT NULL,
--- =======================================================
+    description TEXT,
---
+    price NUMERIC(10, 2) NOT NULL CHECK (price > 0),
--- Represents available food and drink items.
+    category VARCHAR(50)
---
+);
--- 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 orders (
--- =======================================================
+    id SERIAL PRIMARY KEY,
--- ORDER TABLE
+    user_id INT NOT NULL,
--- =======================================================
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
---
+    total_price NUMERIC(10, 2) NOT NULL DEFAULT 0.00,
--- Represents orders placed by customers.
+    CONSTRAINT fk_orders_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
---
+);
--- 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 order_details (
--- =======================================================
+    id SERIAL PRIMARY KEY,
--- ORDER DETAIL TABLE
+    order_id INT NOT NULL,
--- =======================================================
+    menu_item_id INT NOT NULL,
---
+    quantity INT NOT NULL CHECK (quantity > 0),
--- Represents items inside an order.
+    price_at_purchase NUMERIC(10, 2) NOT NULL,
---
+    CONSTRAINT fk_details_order FOREIGN KEY (order_id) REFERENCES orders(id) ON DELETE CASCADE,
--- Required information:
+    CONSTRAINT fk_details_menu_item FOREIGN KEY (menu_item_id) REFERENCES menu_items(id) ON DELETE CASCADE
--- - 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 ...
 
 
-
+INSERT INTO menu_items (name, description, price, category) VALUES
--- =======================================================
+    ('Pizza', 'Delicious cheese and tomato stone-baked pizza', 10.00, 'Pizza'),
--- INITIAL MENU DATA
+    ('Burger', 'Juicy beef patty with lettuce, tomato, and house sauce', 8.00, 'Burger'),
--- =======================================================
+    ('Pasta', 'Rich creamy Alfredo pasta with fresh herbs', 12.00, 'Pasta'),
---
+    ('Soda', 'Chilled refreshing carbonated beverage', 2.50, 'Drink');
--- Insert at least 3 food or drink items.
---
--- Example categories:
--- - Pizza
--- - Burger
--- - Pasta
--- - Drink
---
--- INSERT INTO ...
 
 
-
+SELECT * FROM users;
--- =======================================================
+SELECT * FROM menu_items;
--- OPTIONAL TEST DATA
+SELECT * FROM orders;
--- =======================================================
+SELECT * FROM order_details;
---
--- 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 ...;

pom.xml

@@ -4,7 +4,6 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
                              https://maven.apache.org/xsd/maven-4.0.0.xsd">
-
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>dev</groupId>
@@ -16,7 +15,7 @@
         <maven.compiler.target>23</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-        <postgresql.version>42.7.8</postgresql.version>
+        <postgresql.version>42.7.11</postgresql.version>
     </properties>
 
     <dependencies>
@@ -29,4 +28,15 @@
 
     </dependencies>
 
+    <repositories>
+        <repository>
+            <id>not-the-central-repo</id>
+            <name>Bypass Mirror Repo</name>
+            <url>https://repo.maven.apache.org/maven2/</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
+    </repositories>
+
 </project>

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

@@ -1,25 +1,62 @@
 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<>();
+        String sql = "SELECT id, name, description, price, category FROM menu_items";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Retrieve all menu items
+             PreparedStatement statement = connection.prepareStatement(sql);
+             ResultSet rs = statement.executeQuery()) {
 
-        return null;
+            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) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
+        return items;
     }
 
     public MenuItem findById(int id) {
+        String sql = "SELECT id, name, description, price, category FROM menu_items WHERE id = ?";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Find menu item by id
+             PreparedStatement statement = connection.prepareStatement(sql)) {
 
+            statement.setInt(1, id);
+
+            try (ResultSet rs = statement.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) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
         return null;
     }
-
 }

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

@@ -1,25 +1,66 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.Order;
-
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
 import java.util.List;
 
 public class OrderDao {
 
     public int save(Order order) {
+        String sql = "INSERT INTO orders (user_id, total_price) VALUES (?, ?)";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Insert order and return generated id
+             PreparedStatement statement = connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
 
+            statement.setInt(1, order.getUserId());
+            statement.setDouble(2, order.getTotalPrice());
+
+            int affectedRows = statement.executeUpdate();
+
+            if (affectedRows > 0) {
+                try (ResultSet generatedKeys = statement.getGeneratedKeys()) {
+                    if (generatedKeys.next()) {
+                        return generatedKeys.getInt(1);
+                    }
+                }
+            }
+        } catch (SQLException e) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
         return -1;
     }
 
     public List<Order> findByUserId(int userId) {
+        List<Order> orders = new ArrayList<>();
+        String sql = "SELECT id, user_id, created_at, total_price FROM orders WHERE user_id = ?";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Retrieve all orders of a user
+             PreparedStatement statement = connection.prepareStatement(sql)) {
 
-        return null;
+            statement.setInt(1, userId);
+
+            try (ResultSet rs = statement.executeQuery()) {
+                while (rs.next()) {
+                    Order order = new Order();
+                    order.setId(rs.getInt("id"));
+                    order.setUserId(rs.getInt("user_id"));
+
+                    order.setCreatedAt(rs.getObject("created_at", LocalDateTime.class));
+                    order.setTotalPrice(rs.getDouble("total_price"));
+
+                    orders.add(order);
+                }
+            }
+        } catch (SQLException e) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
+        return orders;
     }
-
 }

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

@@ -1,24 +1,57 @@
 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_at_purchase) VALUES (?, ?, ?, ?)";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Insert order detail
+             PreparedStatement statement = connection.prepareStatement(sql)) {
 
+            statement.setInt(1, detail.getOrderId());
+            statement.setInt(2, detail.getMenuItemId());
+            statement.setInt(3, detail.getQuantity());
+            statement.setDouble(4, detail.getPrice());
+
+            statement.executeUpdate();
+        } catch (SQLException e) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
     }
 
     public List<OrderDetail> findByOrderId(int orderId) {
+        List<OrderDetail> details = new ArrayList<>();
+        String sql = "SELECT id, order_id, menu_item_id, quantity, price_at_purchase FROM order_details WHERE order_id = ?";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Retrieve order details
+             PreparedStatement statement = connection.prepareStatement(sql)) {
 
-        return null;
+            statement.setInt(1, orderId);
+
+            try (ResultSet rs = statement.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_at_purchase"));
+
+                    details.add(detail);
+                }
+            }
+        } catch (SQLException e) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
+        return details;
     }
-
 }

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

@@ -1,23 +1,69 @@
 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 connection = DatabaseConnection.getConnection();
-        // Insert user into database
+             PreparedStatement statement = connection.prepareStatement(sql)) {
 
-        return false;
+            statement.setString(1, user.getUsername());
+            statement.setString(2, user.getPassword());
+            statement.setString(3, user.getEmail());
+
+            int rowsInserted = statement.executeUpdate();
+            return rowsInserted > 0;
+
+        } catch (SQLException e) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+            return false;
+        }
     }
 
     public User findByUsername(String username) {
+        String sql = "SELECT id, username, password, email FROM users WHERE username = ?";
 
-        // TODO:
+        try (Connection connection = DatabaseConnection.getConnection();
-        // Find a user by username
+             PreparedStatement statement = connection.prepareStatement(sql)) {
 
+            statement.setString(1, username);
+
+            try (ResultSet rs = statement.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) {
+            System.out.println("Database Error: Unable to connect or execute query.");
+        }
         return null;
     }
 
+    public void deleteUser(int userId) {
+        String sql = "DELETE FROM users WHERE id = ?";
+
+        try (Connection connection = DatabaseConnection.getConnection();
+             PreparedStatement statement = connection.prepareStatement(sql)) {
+
+            statement.setInt(1, userId);
+            statement.executeUpdate();
+            System.out.println("Account Deleted Successfully.");
+
+        } catch (SQLException e) {
+            System.out.println("Error deleting account: " + e.getMessage());
+        }
+    }
 }

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

@@ -1,6 +1,7 @@
 package dev.database;
 
 import java.sql.Connection;
+import java.sql.DriverManager;
 import java.sql.SQLException;
 
 public class DatabaseConnection {
@@ -15,13 +16,7 @@ public class 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

@@ -1,15 +1,24 @@
 package dev.model;
 
 public class MenuItem {
-
     private int id;
-
     private String name;
-
     private String description;
-
     private double price;
-
     private String 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

@@ -3,13 +3,20 @@ package dev.model;
 import java.time.LocalDateTime;
 
 public class Order {
-
     private int id;
-
     private int userId;
-
     private LocalDateTime createdAt;
-
     private double 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

@@ -1,15 +1,24 @@
 package dev.model;
 
 public class OrderDetail {
-
     private int id;
-
     private int orderId;
-
     private int menuItemId;
-
     private int quantity;
-
     private double 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

@@ -1,13 +1,20 @@
 package dev.model;
 
 public class User {
-
     private int id;
-
     private String username;
-
     private String password;
-
     private String 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 +1,31 @@
 package dev.service;
 
+import dev.dao.UserDao;
 import dev.model.User;
 
 public class AuthService {
 
+    private UserDao userDao = new UserDao();
+
     public boolean register(String username, String password, String email) {
+        if (username == null || username.isEmpty() || password == null) {
+            return false;
+        }
 
-        // TODO:
+        User user = new User();
-        // Validate and register user
+        user.setUsername(username);
+        user.setPassword(password);
+        user.setEmail(email);
 
-        return false;
+        return userDao.save(user);
     }
 
     public User login(String username, String password) {
+        User user = userDao.findByUsername(username);
 
-        // TODO:
+        if (user != null && user.getPassword().equals(password)) {
-        // Authenticate user
+            return user;
-
+        }
         return null;
     }
-
 }

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

@@ -1,12 +1,20 @@
 package dev.service;
 
+import dev.dao.MenuItemDao;
+import dev.model.MenuItem;
+import java.util.List;
+
 public class MenuService {
 
+    private MenuItemDao menuItemDao = new MenuItemDao();
+
     public void showMenu() {
+        List<MenuItem> items = menuItemDao.findAll();
 
-        // TODO:
+        System.out.println("Available Items:");
-        // Display menu items
+        for (MenuItem item : items) {
-
+            System.out.println(item.getId() + ". " + item.getName() + " (" + item.getDescription() + ") - $" + item.getPrice());
+        }
+        System.out.println();
     }
-
 }

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

@@ -1,26 +1,152 @@
 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.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
 public class OrderService {
 
+    private final Scanner scanner = new Scanner(System.in);
+    private MenuItemDao menuItemDao = new MenuItemDao();
+    private OrderDao orderDao = new OrderDao();
+    private OrderDetailDao orderDetailDao = new OrderDetailDao();
+    private MenuService menuService = new MenuService();
+
+    private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
+
     public void placeOrder(int userId) {
+        Scanner scanner = new Scanner(System.in);
+        List<OrderDetail> cart = new ArrayList<>();
+        double grandTotal = 0.0;
 
-        // TODO:
+        System.out.println("\n[Placing Order]");
-        // Create order
 
+        menuService.showMenu();
+
+        while (true) {
+            System.out.print("Enter the ID of the item to add (or 0 to finish): ");
+            int itemId = scanner.nextInt();
+            if (itemId == 0) {
+                break;
+            }
+
+            MenuItem item = menuItemDao.findById(itemId);
+            if (item == null) {
+                System.out.println("Invalid Item ID. Please choose from the list.");
+                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(itemId);
+            detail.setQuantity(quantity);
+            detail.setPrice(item.getPrice());
+            cart.add(detail);
+
+            grandTotal += (item.getPrice() * quantity);
+            System.out.println("Added " + quantity + "x " + item.getName() + " to your cart.\n");
+        }
+
+        if (cart.isEmpty()) {
+            System.out.println("No items selected. Order cancelled.");
+            return;
+        }
+
+        Order order = new Order();
+        order.setUserId(userId);
+        order.setTotalPrice(grandTotal);
+        order.setCreatedAt(LocalDateTime.now());
+
+        int orderId = orderDao.save(order);
+
+        if (orderId != -1) {
+            for (OrderDetail detail : cart) {
+                detail.setOrderId(orderId);
+                orderDetailDao.save(detail);
+            }
+
+            printReceipt(orderId);
+        } else {
+            System.out.println("System Error: Could not process order transaction.");
+        }
     }
 
     public void printReceipt(int orderId) {
+        List<OrderDetail> details = orderDetailDao.findByOrderId(orderId);
 
-        // TODO:
+        System.out.println("\n[Order Summary / Receipt]");
-        // Print order receipt
+        System.out.println("---------------------------------------");
+        System.out.printf("%-18s %-5s %-9s %s\n", "Item", "Qty", "Unit", "Total");
+        System.out.println("---------------------------------------");
 
+        double finalTotal = 0.0;
+        for (OrderDetail detail : details) {
+            MenuItem item = menuItemDao.findById(detail.getMenuItemId());
+            String itemName = (item != null) ? item.getName() : "Unknown Item";
+
+            double lineTotal = detail.getQuantity() * detail.getPrice();
+            finalTotal += lineTotal;
+
+            System.out.printf("%-18s %-5d $%-8.2f $%.2f\n",
+                    itemName,
+                    detail.getQuantity(),
+                    detail.getPrice(),
+                    lineTotal);
+        }
+
+        System.out.println("---------------------------------------");
+        System.out.printf("Final Total: $%.2f\n", finalTotal);
+        System.out.println("Order saved successfully!");
     }
 
     public void showOrderHistory(int userId) {
+        List<Order> orders = orderDao.findByUserId(userId);
 
-        // TODO:
+        System.out.println("\n=======================================");
-        // Display user's order history
+        System.out.println("             ORDER HISTORY             ");
+        System.out.println("=======================================");
 
+        if (orders.isEmpty()) {
+            System.out.println("You have not placed any orders yet.");
+            System.out.println("=======================================");
+            System.out.println("Enter 0 to return to main menu: ");
+            int choice = scanner.nextInt();
+            while (choice != 0) {
+                System.out.println("Invalid choice.");
+                choice = scanner.nextInt();
+            }
+            return;
+
+        }
+
+        for (Order order : orders) {
+            String formattedDate = order.getCreatedAt().format(formatter);
+            System.out.println("Order ID: " + order.getId() +
+                    " | Date: " + formattedDate +
+                    " | Total: $" + order.getTotalPrice());
+        }
+        System.out.println("=======================================");
+        System.out.println("Enter 0 to return to main menu: ");
+        int choice = scanner.nextInt();
+        while (choice != 0) {
+            System.out.println("Invalid choice.");
+            choice = scanner.nextInt();
+        }
     }
 
 }

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

@@ -1,44 +1,138 @@
 package dev.ui;
 
+import dev.dao.UserDao;
+import dev.model.User;
+import dev.service.AuthService;
+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 UserDao userDao = new UserDao();
+    private final AuthService authService = new AuthService();
+    private final OrderService orderService = new OrderService();
+    private boolean printMainMenu = true;
+    private boolean printMenu = true;
 
     public void start() {
-
         while (true) {
-
+            if (printMainMenu) {
-            System.out.println();
+                System.out.println("\n=======================================");
-            System.out.println("===== JAVA PIZZERIA =====");
+                System.out.println("        WELCOME TO JAVA PIZZERIA   ");
-            System.out.println("1. Login");
+                System.out.println("=======================================");
-            System.out.println("2. Register");
+                System.out.println("1. Login");
-            System.out.println("3. Exit");
+                System.out.println("2. Register New Account");
-
+                System.out.println("3. Exit");
-            int choice = scanner.nextInt();
+                System.out.println("=======================================");
-
+                System.out.print("Choose an option: ");
-            switch (choice) {
-
-                case 1:
-                    // TODO
-                    break;
-
-                case 2:
-                    // TODO
-                    break;
-
-                case 3:
-                    return;
-
-                default:
-                    System.out.println("Invalid choice");
-
             }
 
-        }
+            String choice = scanner.nextLine();
 
+            switch (choice) {
+                case "1":
+                    handleLogin();
+                    printMainMenu = true;
+                    break;
+                case "2":
+                    handleRegister();
+                    printMainMenu = true;
+                    break;
+                case "3":
+                    System.out.println("Thank you for visiting Java Pizzeria!");
+                    return;
+                default:
+                    System.out.println("Invalid choice.");
+                    printMainMenu = false;
+            }
+        }
     }
 
+    private void handleLogin() {
+        System.out.println("\n[Logging in]");
+        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) {
+            showMainMenu(user);
+        } else {
+            System.out.println("Invalid username or password.");
+        }
+    }
+
+    private void handleRegister() {
+        System.out.println("\n[Registering 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: ");
+        String email = scanner.nextLine();
+
+        boolean success = authService.register(username, password, email);
+        if (success) {
+            System.out.println("Account registered successfully! You can now log in.");
+        } else {
+            System.out.println("Registration failed. Data may be invalid or username taken.");
+        }
+    }
+
+    private void showMainMenu(User user) {
+        while (true) {
+            if (printMenu) {
+                System.out.println();
+                System.out.println("=======================================");
+                System.out.println("             MAIN MENU                 ");
+                System.out.println("=======================================");
+                System.out.println("1. View Menu");
+                System.out.println("2. View Order History ");
+                System.out.println("3. Logout");
+                System.out.println("4. Delete Account");
+                System.out.println("=======================================");
+                System.out.print("Choose an option: ");
+            }
+
+            String choice = scanner.nextLine();
+
+            switch (choice) {
+                case "1":
+                    orderService.placeOrder(user.getId());
+                    printMenu = true;
+                    break;
+                case "2":
+                    orderService.showOrderHistory(user.getId());
+                    printMenu = true;
+                    break;
+                case "3":
+                    System.out.println("Logging out...");
+                    return;
+                case "4":
+                    while (true) {
+                        System.out.print("Enter your password to confirm (or 0 to cancel): ");
+                        String confirmation = scanner.nextLine();
+
+                        if (confirmation.equals("0")) {
+                            System.out.println("\nDeletion canceled. Returning to safety.");
+                            break;
+                        }
+
+                        if (confirmation.equals(user.getPassword())) {
+                            userDao.deleteUser(user.getId());
+                            return;
+
+                        } else {
+                            System.out.println("Password not correct.");
+                        }
+                    }
+                    break;
+                default:
+                    System.out.println("Invalid choice.");
+                    printMenu = false;
+            }
+        }
+    }
 }