Merge PR 'Complete the project' (#1) from develop into main

Full Mark 100/100

.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 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$APPLICATION_HOME_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$APPLICATION_HOME_DIR$/src/main/resources" charset="UTF-8" />
+    <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="Central Repository" />
+      <option name="url" value="https://maven.devneeds.ir/" />
+    </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

@@ -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="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>

src/.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/

src/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="25" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

src/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/WS-10-Database.iml" filepath="$PROJECT_DIR$/WS-10-Database.iml" />
+    </modules>
+  </component>
+</project>

src/.idea/vcs.xml

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

src/WS-10-Database.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/main/java" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

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

@@ -1,25 +1,74 @@
 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() {
+    public List<MenuItem> findAll()
+    {
+        List<MenuItem> items = new ArrayList<>();
+        String sql = "SELECT * FROM menu_items";
 
-        // TODO:
-        // Retrieve all menu items
+        try (Connection conn = DatabaseConnection.getConnection();
+             PreparedStatement ps = conn.prepareStatement(sql))
+        {
+            ResultSet rs = ps.executeQuery();
 
-        return null;
+            while (rs.next())
+            {
+                MenuItem menuItem = new MenuItem();
+
+                menuItem.setId(rs.getInt("id"));
+                menuItem.setName(rs.getString("name"));
+                menuItem.setDescription(rs.getString("description"));
+                menuItem.setPrice(rs.getDouble("price"));
+                menuItem.setCategory(rs.getString("category"));
+
+                items.add(menuItem);
+            }
+        }
+        catch (SQLException e)
+        {
+            e.printStackTrace();
+        }
+        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 ps = conn.prepareStatement(sql))
+        {
+            ps.setInt(1,id);
+            ResultSet rs = ps.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 +1,63 @@
 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 ps = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS))
+        {
+            ps.setInt(1,order.getUserId());
+            ps.setDouble(2,order.getTotalPrice());
+            ps.executeUpdate();
+            ResultSet rs = ps.getGeneratedKeys();
+
+            if(rs.next()) return rs.getInt(1);
+        }
+        catch (SQLException e)
+        {
+            e.printStackTrace();
+        }
         return -1;
     }
 
     public List<Order> findByUserId(int userId) {
 
-        // TODO:
-        // Retrieve all orders of a user
+        List<Order> orders = new ArrayList<>();
+        String sql = "SELECT * FROM orders WHERE user_id=?";
 
-        return null;
+        try(Connection conn = DatabaseConnection.getConnection();
+            PreparedStatement ps = conn.prepareStatement(sql))
+        {
+            ps.setInt(1,userId);
+            ResultSet rs = ps.executeQuery();
+
+            while(rs.next())
+            {
+
+                Order order = new Order();
+
+                order.setId(rs.getInt("id"));
+                order.setUserId(rs.getInt("user_id"));
+                order.setTotalPrice(rs.getDouble("total_price"));
+                order.setCreatedAt(rs.getTimestamp("created_at").toLocalDateTime());
+
+                orders.add(order);
+            }
+        }
+        catch (SQLException e)
+        {
+            e.printStackTrace();
+        }
+        return orders;
     }
-
 }

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

@@ -1,24 +1,62 @@
 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) {
+    public void save(OrderDetail detail)
+    {
+        String sql = "INSERT INTO order_details(order_id,menu_item_id,quantity,price) VALUES(?,?,?,?)";
 
-        // TODO:
-        // Insert order detail
+        try(Connection conn = DatabaseConnection.getConnection();
+            PreparedStatement ps = conn.prepareStatement(sql))
+        {
+            ps.setInt(1,detail.getOrderId());
+            ps.setInt(2,detail.getMenuItemId());
+            ps.setInt(3,detail.getQuantity());
+            ps.setDouble(4,detail.getPrice());
 
+            ps.executeUpdate();
+
+        }
+        catch (SQLException e)
+        {
+            e.printStackTrace();
+        }
     }
 
-    public List<OrderDetail> findByOrderId(int orderId) {
+    public List<OrderDetail> findByOrderId(int orderId)
+    {
+        List<OrderDetail> details = new ArrayList<>();
+        String sql = "SELECT * FROM order_details WHERE order_id=?";
 
-        // TODO:
-        // Retrieve order details
+        try(Connection conn = DatabaseConnection.getConnection();
+            PreparedStatement ps = conn.prepareStatement(sql))
+        {
+            ps.setInt(1,orderId);
+            ResultSet rs = ps.executeQuery();
 
-        return null;
+            while(rs.next())
+            {
+                OrderDetail detail = new OrderDetail();
+
+                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 +1,61 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.User;
 
+import javax.xml.transform.Result;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
 public class UserDao {
 
-    public boolean save(User user) {
+    public boolean save(User user)
+    {
+        String sql = "INSERT INTO users(username,password,email) VALUES(?,?,?)";
 
-        // TODO:
-        // Insert user into database
+        try (Connection conn = DatabaseConnection.getConnection();
+             PreparedStatement ps = conn.prepareStatement(sql))
+        {
+            ps.setString(1, user.getUsername());
+            ps.setString(2, user.getPassword());
+            ps.setString(3, user.getEmail());
 
+            return ps.executeUpdate() > 0;
+        }
+        catch (SQLException e)
+        {
+            e.printStackTrace();
+        }
         return false;
     }
 
-    public User findByUsername(String username) {
+    public User findByUsername(String username)
+    {
+        String sql = "SELECT * FROM users WHERE username=?";
 
-        // TODO:
-        // Find a user by username
+        try (Connection conn = DatabaseConnection.getConnection();
+            PreparedStatement ps = conn.prepareStatement(sql))
+        {
+            ps.setString(1, username);
+            ResultSet rs = ps.executeQuery();
 
+            if (rs.next())
+            {
+                User user = new User();
+                user.setId(rs.getInt("id"));
+                user.setUsername(rs.getString("username"));
+                user.setPassword(rs.getString("email"));
+                user.setPassword(rs.getString("password"));
+
+                return user;
+            }
+        }
+        catch (SQLException e)
+        {
+            throw new RuntimeException(e);
+        }
         return null;
     }
-
 }

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 {
@@ -9,19 +10,14 @@ public class DatabaseConnection {
 
     private static final String USER = "postgres"; // Your Username
 
-    private static final String PASSWORD = "password"; // Your Password
+    private static final String PASSWORD = "bita3773"; // Your Password
 
     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

@@ -12,4 +12,43 @@ public class MenuItem {
 
     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

@@ -12,4 +12,29 @@ public class Order {
 
     private double totalPrice;
 
+    public LocalDateTime getCreatedAt() { return createdAt; }
+
+    public void setCreatedAt(LocalDateTime createdAt) { this.createdAt = createdAt; }
+
+    public int getUserId() {
+        return userId;
+    }
+
+    public void setUserId(int userId) {
+        this.userId = userId;
+    }
+
+    public double getTotalPrice() {
+        return totalPrice;
+    }
+
+    public void setTotalPrice(double totalPrice) {
+        this.totalPrice = totalPrice;
+    }
+
+    public int getId() { return id; }
+
+    public void setId(int id) {
+        this.id = id;
+    }
 }

src/main/java/dev/model/OrderDetail.java

@@ -2,8 +2,6 @@ package dev.model;
 
 public class OrderDetail {
 
-    private int id;
-
     private int orderId;
 
     private int menuItemId;
@@ -12,4 +10,19 @@ public class OrderDetail {
 
     private double price;
 
+    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

@@ -10,4 +10,19 @@ public class User {
 
     private String email;
 
+    public String getUsername() { return username; }
+
+    public void setUsername(String username) { this.username = username; }
+
+    public int getId() { return id; }
+
+    public void setId(int id) { this.id = id; }
+
+    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 +1,38 @@
 package dev.service;
 
+import dev.dao.UserDao;
 import dev.model.User;
 
-public class AuthService {
+public class AuthService
+{
+    private final UserDao userDao = new UserDao();
 
-    public boolean register(String username, String password, String email) {
+    public boolean register(String username, String password, String email)
+    {
+       if (userDao.findByUsername(username) != null)
+       {
+           System.out.println("username exists");
+           return false;
+       }
 
-        // TODO:
-        // Validate and register user
-
-        return false;
+       password = Integer.toHexString(password.hashCode());
+       User user = new User();
+       user.setUsername(username);
+       user.setPassword(password);
+       user.setEmail(email);
+       return userDao.save(user);
     }
 
-    public User login(String username, String password) {
+    public User login(String username, String password)
+    {
+        User user = userDao.findByUsername(username);
 
-        // TODO:
-        // Authenticate user
+        if (user == null) return null;
+
+        String hash = Integer.toHexString(password.hashCode());
+
+        if(user.getPassword().equals(hash)) return user;
 
         return null;
     }
-
 }

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

@@ -1,12 +1,23 @@
 package dev.service;
 
-public class MenuService {
-
-    public void showMenu() {
-
-        // TODO:
-        // Display menu items
+import dev.dao.MenuItemDao;
+import dev.model.MenuItem;
 
+public class MenuService
+{
+    private final MenuItemDao dao = new MenuItemDao();
+    public void showMenu()
+    {
+        System.out.println("\n===================================================================");
+        System.out.println("id     name                 description          price    category");
+        System.out.println("===================================================================");
+        for(MenuItem item : dao.findAll())
+        {
+            System.out.println(item.getId() + ") "
+                    + item.getName() + " - "
+                    + item.getDescription()  + " - $" +item.getPrice()
+                    + " - " + item.getCategory());
+            System.out.println("-------------------------------------------------------------------");
+        }
     }
-
 }

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

@@ -1,26 +1,133 @@
 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.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
 public class OrderService {
 
-    public void placeOrder(int userId) {
+    private final Scanner scanner = new Scanner(System.in);
+    private final MenuItemDao menuDao = new MenuItemDao();
+    private final OrderDao orderDao = new OrderDao();
+    private final OrderDetailDao detailDao = new OrderDetailDao();
 
-        // TODO:
-        // Create order
+    public void placeOrder(int userId)
+    {
+        List<OrderDetail> details = new ArrayList<>();
 
+        double totalPrice = 0;
+
+        while (true)
+        {
+            System.out.println("\nEnter menu item id (0 to finish): ");
+
+            int itemId = scanner.nextInt();
+
+            if (itemId == 0)  break;
+
+            MenuItem item = menuDao.findById(itemId);
+
+            if (item == null)
+            {
+                System.out.println("Item not found.");
+                continue;
+            }
+
+            System.out.println("Quantity: ");
+
+            int quantity = scanner.nextInt();
+
+            OrderDetail detail = new OrderDetail();
+
+            detail.setMenuItemId(itemId);
+            detail.setQuantity(quantity);
+            detail.setPrice(item.getPrice());
+
+            totalPrice += item.getPrice() * quantity;
+
+            details.add(detail);
+        }
+
+        if (details.isEmpty())
+        {
+            System.out.println("No items selected.");
+            return;
+        }
+
+        Order order = new Order();
+
+        order.setUserId(userId);
+        order.setTotalPrice(totalPrice);
+
+        int orderId = orderDao.save(order);
+
+        for (OrderDetail detail : details)
+        {
+            detail.setOrderId(orderId);
+
+            detailDao.save(detail);
+        }
+
+        printReceipt(orderId);
+        System.out.println("Order saved successfully.");
     }
 
-    public void printReceipt(int orderId) {
+    public void printReceipt(int orderId)
+    {
+        List<OrderDetail> details = detailDao.findByOrderId(orderId);
 
-        // TODO:
-        // Print order receipt
+        System.out.println("\n[Order Summary / Receipt]");
+        System.out.println("----------------------------------------------------");
+        System.out.printf("%-15s %-8s %-10s %-10s%n",
+                "Item", "Qty", "Unit", "Total");
+        System.out.println("----------------------------------------------------");
 
+        double finalTotal = 0;
+
+        for(OrderDetail detail : details)
+        {
+            MenuItem item = menuDao.findById(detail.getMenuItemId());
+
+            double subtotal = detail.getPrice() * detail.getQuantity();
+
+            finalTotal += subtotal;
+
+            System.out.printf("%-15s %-8d $%-9.2f $%-9.2f%n",
+                    item.getName(),
+                    detail.getQuantity(),
+                    detail.getPrice(),
+                    subtotal);
+        }
+
+        System.out.println("----------------------------------------------------");
+        System.out.printf("Final Total: $%.2f%n", finalTotal);
     }
 
-    public void showOrderHistory(int userId) {
+    public void showOrderHistory(int userId)
+    {
+        List<Order> orders = orderDao.findByUserId(userId);
 
-        // TODO:
-        // Display user's order history
+        if (orders.isEmpty())
+        {
+            System.out.println("No orders found.");
+            return;
+        }
 
+        System.out.println("\n===== ORDER HISTORY =====");
+
+        for (Order order : orders)
+        {
+            System.out.println("Order ID: " + order.getId()
+                    + " | Total: $" + order.getTotalPrice()
+                    + " | Date: " + order.getCreatedAt()
+            );
+        }
     }
-
 }

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

@@ -1,44 +1,135 @@
 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 {
+public class ConsoleMenu
+{
+    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 final Scanner scanner =
-            new Scanner(System.in);
+    private int userId;
 
-    public void start() {
-
-        while (true) {
-
-            System.out.println();
-            System.out.println("===== JAVA PIZZERIA =====");
+    public void start()
+    {
+        while (true)
+        {
+            System.out.println("\n===== JAVA PIZZERIA =====");
             System.out.println("1. Login");
             System.out.println("2. Register");
             System.out.println("3. Exit");
 
-            int choice = scanner.nextInt();
-
-            switch (choice) {
+            int choice = getIntInput();
 
+            switch (choice)
+            {
                 case 1:
-                    // TODO
+                    login();
                     break;
 
                 case 2:
-                    // TODO
+                    register();
                     break;
 
                 case 3:
+                    System.out.println("Goodbye!");
                     return;
 
                 default:
-                    System.out.println("Invalid choice");
-
+                    System.out.println("Invalid choice.");
             }
-
         }
-
     }
 
+    private void login()
+    {
+        System.out.println("\n[Login]");
+
+        System.out.print("Enter Username: ");
+        String username = scanner.next();
+
+        System.out.print("Enter Password: ");
+        String password = scanner.next();
+
+        User user = authService.login(username, password);
+
+        if (user != null)
+        {
+            userId = user.getId();
+            System.out.println("Welcome " + user.getUsername());
+            showMainMenu();
+        }
+        else System.out.println("Invalid credentials.");
+    }
+
+    private void register()
+    {
+        System.out.print("Username: ");
+        String username = scanner.next();
+
+        System.out.print("Email: ");
+        String email = scanner.next();
+
+        System.out.print("Password: ");
+        String password = scanner.next();
+
+        if (authService.register(username, password, email)) System.out.println("Registred successfully!");
+        else System.out.println("Registration failed.");
+    }
+
+    private void showMainMenu()
+    {
+        while (true)
+        {
+            System.out.println("\n=======================================");
+            System.out.println("          🍽️ MAIN MENU 🍽️");
+            System.out.println("=======================================");
+            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.println("=======================================");
+            System.out.println("Choose an option: ");
+
+            int choice = getIntInput();
+
+            switch (choice)
+            {
+                case 1:
+                    menuService.showMenu();
+                    break;
+
+                case 2:
+                    menuService.showMenu();
+                    orderService.placeOrder(userId);
+                    break;
+
+                case 3:
+                    orderService.showOrderHistory(userId);
+                    break;
+
+                case 4:
+                    return;
+
+                default:
+                    System.out.println("Invalid choice.");
+            }
+        }
+    }
+
+    private int getIntInput()
+    {
+        while (!scanner.hasNextInt())
+        {
+            System.out.println("Please enter a number:");
+            scanner.next();
+        }
+        return scanner.nextInt();
+    }
 }