Merge pull request 'Restaurant Database Management System' (#1) from develop into main

Reviewed-on: Romina/WS-10-Database#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="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>

database.sql

@@ -1,141 +1,85 @@
--- Restaurant Database Management System
---
--- Instructions:
--- 1. Create all required tables.
--- 2. Design appropriate PRIMARY KEY and FOREIGN KEY relationships.
--- 3. Add suitable constraints based on the requirements.
--- 4. Insert initial mock data.
--- 5. Insert at least 3 menu items.
--- 6. The script should be executable from start to finish without errors.
-
-
-
 -- =======================================================
 -- USER TABLE
 -- =======================================================
---
--- Represents customers using the system.
---
--- Required information:
--- - Unique identifier
--- - Username
--- - Password
--- - Email (optional)
---
--- Requirements:
--- - Each user must have a unique identifier.
--- - Usernames must be unique.
--- - Username and password are required.
--- - Passwords should not be stored in plain text.
---
--- CREATE TABLE ...
-
 
+CREATE TABLE users (
+                       id SERIAL PRIMARY KEY,
+                       username VARCHAR(50) NOT NULL UNIQUE,
+                       password VARCHAR(255) NOT NULL,
+                       email VARCHAR(100)
+);
 
 -- =======================================================
 -- MENU ITEM TABLE
 -- =======================================================
---
--- Represents available food and drink items.
---
--- Required information:
--- - Unique identifier
--- - Name
--- - Description (optional)
--- - Price
--- - Category (optional)
---
--- Requirements:
--- - Each menu item must have a unique identifier.
--- - Name is required.
--- - Price must always be positive.
---
--- CREATE TABLE ...
-
 
+CREATE TABLE 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)
+);
 
 -- =======================================================
--- ORDER TABLE
+-- ORDERS TABLE
 -- =======================================================
---
--- Represents orders placed by customers.
---
--- Required information:
--- - Unique identifier
--- - Reference to customer
--- - Creation date and time
--- - Total price
---
--- Requirements:
--- - Each order must belong to exactly one user.
--- - A user can have multiple orders.
--- - The relationship between User and Order must be implemented.
---
--- Note:
--- Avoid using reserved SQL keywords as table names.
--- Consider using a name such as "orders" or "customer_orders".
---
--- CREATE TABLE ...
 
+CREATE TABLE orders (
+                        id SERIAL PRIMARY KEY,
+                        user_id INT NOT NULL,
+                        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                        total_price NUMERIC(10,2) NOT NULL DEFAULT 0,
 
+                        CONSTRAINT fk_orders_user
+                            FOREIGN KEY (user_id)
+                                REFERENCES users(id)
+                                ON DELETE CASCADE
+);
 
 -- =======================================================
 -- ORDER DETAIL TABLE
 -- =======================================================
---
--- Represents items inside an order.
---
--- Required information:
--- - Unique identifier
--- - Reference to an order
--- - Reference to a menu item
--- - Quantity
--- - Item price at purchase time
---
--- Requirements:
--- - Each detail record must belong to one order.
--- - Each detail record must reference one menu item.
--- - Quantity must always be greater than zero.
--- - Store the item's price at the moment of purchase.
---
--- CREATE TABLE ...
 
+CREATE TABLE order_details (
+                               id SERIAL PRIMARY KEY,
+                               order_id INT NOT NULL,
+                               menu_item_id INT NOT NULL,
+                               quantity INT NOT NULL CHECK (quantity > 0),
+                               price_at_purchase NUMERIC(10,2) NOT NULL,
 
+                               CONSTRAINT fk_order_details_order
+                                   FOREIGN KEY (order_id)
+                                       REFERENCES orders(id)
+                                       ON DELETE CASCADE,
+
+                               CONSTRAINT fk_order_details_menu_item
+                                   FOREIGN KEY (menu_item_id)
+                                       REFERENCES menu_items(id)
+);
 
 -- =======================================================
 -- INITIAL MENU DATA
 -- =======================================================
---
--- Insert at least 3 food or drink items.
---
--- Example categories:
--- - Pizza
--- - Burger
--- - Pasta
--- - Drink
---
--- INSERT INTO ...
-
 
+INSERT INTO menu_items (name, description, price, category) VALUES
+                                                                ('Margherita Pizza', 'Classic cheese pizza', 10.00, 'Pizza'),
+                                                                ('Cheeseburger', 'Beef burger with cheese', 8.50, 'Burger'),
+                                                                ('Spaghetti Bolognese', 'Pasta with meat sauce', 12.00, 'Pasta'),
+                                                                ('Coca Cola', 'Cold soft drink', 2.50, 'Drink');
 
 -- =======================================================
--- OPTIONAL TEST DATA
+-- OPTIONAL TEST USER
 -- =======================================================
---
--- You may insert sample users and orders for testing.
--- This section is optional.
---
--- INSERT INTO ...
-
 
+INSERT INTO users (username, password, email) VALUES
+    ('admin', 'hashed_password_here', 'admin@example.com');
 
 -- =======================================================
 -- VERIFICATION QUERIES
 -- =======================================================
---
+
--- Uncomment these queries to verify your database.
+-- SELECT * FROM users;
---
+-- SELECT * FROM menu_items;
--- SELECT * FROM ...;
+-- SELECT * FROM orders;
--- SELECT * FROM ...;
+-- SELECT * FROM order_details;
--- SELECT * FROM ...;
--- SELECT * FROM ...;

src/main/java/dev/Main.java

@@ -1,14 +1,47 @@
 package dev;
 
+import dev.dao.MenuItemDao;
+import dev.dao.OrderDao;
+import dev.dao.OrderDetailDao;
+import dev.dao.UserDao;
+import dev.database.DatabaseConnection;
+import dev.service.AuthService;
+import dev.service.MenuService;
+import dev.service.OrderService;
 import dev.ui.ConsoleMenu;
 
-public class Main {
+import java.sql.Connection;
 
-    public static void main(String[] args) {
+public class Main
+{
+    public static void main(String[] args)
+    {
+        try
+        {
+            Connection connection = DatabaseConnection.getConnection();
 
-        ConsoleMenu menu = new ConsoleMenu();
+            UserDao userDao = new UserDao(connection);
-        menu.start();
+            MenuItemDao menuItemDao = new MenuItemDao(connection);
+            OrderDao orderDao = new OrderDao(connection);
+            OrderDetailDao orderDetailDao = new OrderDetailDao(connection);
 
+            AuthService authService = new AuthService(userDao);
+            MenuService menuService = new MenuService(menuItemDao);
+            OrderService orderService = new OrderService(
+                    orderDao,
+                    orderDetailDao,
+                    menuItemDao
+            );
+
+            ConsoleMenu menu = new ConsoleMenu(
+                    authService,
+                    menuService,
+                    orderService
+            );
+
+            menu.start();
+
+        }
+        catch (Exception e) {System.out.println("Application error: " + e.getMessage());}
     }
-
 }

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

@@ -2,24 +2,72 @@ package dev.dao;
 
 import dev.model.MenuItem;
 
+import java.sql.*;
+import java.util.ArrayList;
 import java.util.List;
 
-public class MenuItemDao {
+public class MenuItemDao
+{
+    private final Connection connection;
 
-    public List<MenuItem> findAll() {
+    public MenuItemDao(Connection connection) {this.connection = connection;}
 
-        // TODO:
+    public List<MenuItem> findAll()
-        // Retrieve all menu items
+    {
+        List<MenuItem> items = new ArrayList<>();
+
+        String sql = "SELECT id, name, description, price, category FROM menu_items";
+
+        try (PreparedStatement ps = connection.prepareStatement(sql);
+             ResultSet rs = ps.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) {System.out.println("Error fetching menu items: " + e.getMessage());}
+
+        return items;
+    }
+
+    public MenuItem findById(int id)
+    {
+        String sql = "SELECT id, name, description, price, category FROM menu_items WHERE id = ?";
+
+        try (PreparedStatement ps = connection.prepareStatement(sql))
+        {
+
+            ps.setInt(1, id);
+
+            try (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) {System.out.println("Error finding menu item: " + e.getMessage());}
 
         return null;
     }
-
-    public MenuItem findById(int id) {
-
-        // TODO:
-        // Find menu item by id
-
-        return null;
-    }
-
 }

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

@@ -2,24 +2,77 @@ package dev.dao;
 
 import dev.model.Order;
 
+import java.sql.*;
+import java.util.ArrayList;
 import java.util.List;
 
-public class OrderDao {
+public class OrderDao
+{
+    private final Connection connection;
 
-    public int save(Order order) {
+    public OrderDao(Connection connection) {this.connection = connection;}
 
-        // TODO:
+    public int save(Order order)
-        // Insert order and return generated id
+    {
+        String sql = """
+            INSERT INTO orders (user_id, created_at, total_price)
+            VALUES (?, ?, ?)
+        """;
+
+        try (PreparedStatement ps = connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS))
+        {
+            ps.setInt(1, order.getUserId());
+            ps.setTimestamp(2, Timestamp.valueOf(order.getCreatedAt()));
+            ps.setDouble(3, order.getTotalPrice());
+
+            int affectedRows = ps.executeUpdate();
+
+            if (affectedRows == 0) {return -1;}
+
+            try (ResultSet generatedKeys = ps.getGeneratedKeys())
+            {
+                if (generatedKeys.next()) {return generatedKeys.getInt(1);}
+            }
+
+        }
+        catch (SQLException e) {System.out.println("Error saving order: " + e.getMessage());}
 
         return -1;
     }
 
-    public List<Order> findByUserId(int userId) {
+    public List<Order> findByUserId(int userId)
+    {
+        List<Order> orders = new ArrayList<>();
 
-        // TODO:
+        String sql = """
-        // Retrieve all orders of a user
+            SELECT id, user_id, created_at, total_price
+            FROM orders
+            WHERE user_id = ?
+            ORDER BY created_at DESC
+        """;
 
-        return null;
+        try (PreparedStatement ps = connection.prepareStatement(sql))
+        {
+            ps.setInt(1, userId);
+
+            try (ResultSet rs = ps.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) {System.out.println("Error fetching orders: " + e.getMessage());}
+
+        return orders;
     }
-
 }

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

@@ -2,23 +2,69 @@ package dev.dao;
 
 import dev.model.OrderDetail;
 
+import java.sql.*;
+import java.util.ArrayList;
 import java.util.List;
 
-public class OrderDetailDao {
+public class OrderDetailDao
+{
+    private final Connection connection;
 
-    public void save(OrderDetail detail) {
+    public OrderDetailDao(Connection connection) {this.connection = connection;}
 
-        // TODO:
+    public void save(OrderDetail detail)
-        // Insert order detail
+    {
+        String sql = """
+            INSERT INTO order_details (order_id, menu_item_id, quantity, price_at_purchase)
+            VALUES (?, ?, ?, ?)
+        """;
 
+        try (PreparedStatement ps = connection.prepareStatement(sql))
+        {
+            ps.setInt(1, detail.getOrderId());
+            ps.setInt(2, detail.getMenuItemId());
+            ps.setInt(3, detail.getQuantity());
+            ps.setDouble(4, detail.getPrice()); // درست
+
+            ps.executeUpdate();
+
+        }
+        catch (SQLException e) {System.out.println("Error saving order detail: " + e.getMessage());}
     }
 
-    public List<OrderDetail> findByOrderId(int orderId) {
+    public List<OrderDetail> findByOrderId(int orderId)
+    {
+        List<OrderDetail> details = new ArrayList<>();
 
-        // TODO:
+        String sql = """
-        // Retrieve order details
+            SELECT id, order_id, menu_item_id, quantity, price_at_purchase
+            FROM order_details
+            WHERE order_id = ?
+        """;
 
-        return null;
+        try (PreparedStatement ps = connection.prepareStatement(sql))
+        {
+            ps.setInt(1, orderId);
+
+            try (ResultSet rs = ps.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("Error fetching order details: " + e.getMessage());}
+
+        return details;
     }
-
 }

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

@@ -2,22 +2,69 @@ package dev.dao;
 
 import dev.model.User;
 
-public class UserDao {
+import java.sql.*;
 
-    public boolean save(User user) {
+public class UserDao
+{
+    private final Connection connection;
 
-        // TODO:
+    public UserDao(Connection connection) {this.connection = connection;}
-        // Insert user into database
 
-        return false;
+    public boolean save(User user)
+    {
+        String sql = """
+            INSERT INTO users (username, password, email)
+            VALUES (?, ?, ?)
+        """;
+
+        try (PreparedStatement ps = connection.prepareStatement(sql))
+        {
+            ps.setString(1, user.getUsername());
+            ps.setString(2, user.getPassword());
+            ps.setString(3, user.getEmail());
+
+            int rowsAffected = ps.executeUpdate();
+
+            return rowsAffected > 0;
+
+        }
+        catch (SQLException e)
+        {
+            System.out.println("Error saving user: " + e.getMessage());
+            return false;
+        }
     }
 
-    public User findByUsername(String username) {
+    public User findByUsername(String username)
+    {
+        String sql = """
+            SELECT id, username, password, email
+            FROM users
+            WHERE username = ?
+        """;
 
-        // TODO:
+        try (PreparedStatement ps = connection.prepareStatement(sql))
-        // Find a user by username
+        {
+            ps.setString(1, username);
+
+            try (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("password"));
+                    user.setEmail(rs.getString("email"));
+
+                    return user;
+                }
+            }
+
+        }
+        catch (SQLException e) {System.out.println("Error finding user: " + e.getMessage());}
 
         return null;
     }
-
 }

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

@@ -1,27 +1,26 @@
 package dev.database;
 
 import java.sql.Connection;
+import java.sql.DriverManager;
 import java.sql.SQLException;
 
-public class DatabaseConnection {
+public class DatabaseConnection
+{
+    private static final String URL =
+            "jdbc:postgresql://localhost:5432/restaurant_db";
 
-    private static final String URL = "jdbc:postgresql://localhost:5432/restaurant_db"; // DB Server
+    private static final String USER = "postgres";
 
-    private static final String USER = "postgres"; // Your Username
+    private static final String PASSWORD = "Romina85";
 
-    private static final String PASSWORD = "password"; // Your Password
+    private DatabaseConnection() {}
 
-    private DatabaseConnection() {
+    public static Connection getConnection() throws SQLException
+    {
+        try {Class.forName("org.postgresql.Driver");}
 
+        catch (ClassNotFoundException e) {throw new RuntimeException("PostgreSQL Driver not found!", e);}
+
+        return DriverManager.getConnection(URL, USER, PASSWORD);
     }
-
-    public static Connection getConnection()
-            throws SQLException {
-
-        // TODO:
-        // Return a valid PostgreSQL connection
-
-        return null;
-    }
-
 }

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

@@ -1,15 +1,43 @@
 package dev.model;
 
-public class MenuItem {
+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;}
+
+    @Override
+    public String toString()
+    {
+        return "MenuItem{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", description='" + description + '\'' +
+                ", price=" + price +
+                ", category='" + category + '\'' +
+                '}';
+    }
 }

src/main/java/dev/model/Order.java

@@ -2,14 +2,26 @@ package dev.model;
 
 import java.time.LocalDateTime;
 
-public class Order {
+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 +1,30 @@
 package dev.model;
 
-public class OrderDetail {
+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 +1,25 @@
 package dev.model;
 
-public class User {
+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 +1,53 @@
 package dev.service;
 
+import dev.dao.UserDao;
 import dev.model.User;
 
-public class AuthService {
+public class AuthService
+{
+    private final UserDao userDao;
 
-    public boolean register(String username, String password, String email) {
+    public AuthService(UserDao userDao) {this.userDao = userDao;}
 
-        // TODO:
+    public boolean register(String username, String password, String email)
-        // Validate and register user
+    {
+        if (username == null || username.isBlank()) return false;
+        if (password == null || password.length() < 4) return false;
 
-        return false;
+        if (userDao.findByUsername(username) != null)
+        {
+            System.out.println("Username already exists!");
+            return false;
+        }
+
+        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)
+    {
+        if (username == null || password == null) return null;
 
-        // TODO:
+        User user = userDao.findByUsername(username);
-        // Authenticate user
 
-        return null;
+        if (user == null)
+        {
+            System.out.println("User not found!");
+            return null;
+        }
+
+        if (!user.getPassword().equals(password))
+        {
+            System.out.println("Wrong password!");
+            return null;
+        }
+
+        return user;
     }
-
 }

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

@@ -1,12 +1,41 @@
 package dev.service;
 
-public class MenuService {
+import dev.dao.MenuItemDao;
+import dev.model.MenuItem;
 
-    public void showMenu() {
+import java.util.List;
 
-        // TODO:
+public class MenuService
-        // Display menu items
+{
+    private final MenuItemDao menuItemDao;
 
+    public MenuService(MenuItemDao menuItemDao) {this.menuItemDao = menuItemDao;}
+
+    public void showMenu()
+    {
+        List<MenuItem> items = menuItemDao.findAll();
+
+        if (items == null || items.isEmpty())
+        {
+            System.out.println("No menu items available.");
+            return;
+        }
+
+        System.out.println("=================================");
+        System.out.println("          🍽️ MENU");
+        System.out.println("=================================");
+
+        for (MenuItem item : items)
+        {
+            System.out.println(
+                    item.getId() + ". " +
+                            item.getName() + " - $" +
+                            item.getPrice()
+            );
+
+            if (item.getDescription() != null) {System.out.println("   " + item.getDescription());}
+        }
+
+        System.out.println("=================================");
     }
-
 }

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

@@ -1,26 +1,152 @@
 package dev.service;
 
-public class OrderService {
+import dev.dao.MenuItemDao;
+import dev.dao.OrderDao;
+import dev.dao.OrderDetailDao;
+import dev.model.MenuItem;
+import dev.model.Order;
+import dev.model.OrderDetail;
 
-    public void placeOrder(int userId) {
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Scanner;
 
-        // TODO:
+public class OrderService
-        // Create order
+{
+    private final OrderDao orderDao;
+    private final OrderDetailDao orderDetailDao;
+    private final MenuItemDao menuItemDao;
 
+    public OrderService(OrderDao orderDao,
+                        OrderDetailDao orderDetailDao,
+                        MenuItemDao menuItemDao) {
+        this.orderDao = orderDao;
+        this.orderDetailDao = orderDetailDao;
+        this.menuItemDao = menuItemDao;
     }
 
-    public void printReceipt(int orderId) {
+    public void placeOrder(int userId)
+    {
+        Scanner scanner = new Scanner(System.in);
 
-        // TODO:
+        double totalPrice = 0;
-        // Print order receipt
 
+        Order order = new Order();
+        order.setUserId(userId);
+        order.setCreatedAt(LocalDateTime.now());
+        order.setTotalPrice(0);
+
+        int orderId = orderDao.save(order);
+
+        if (orderId == -1)
+        {
+            System.out.println("Failed to create order!");
+            return;
+        }
+
+        System.out.println("Available Menu:");
+        List<MenuItem> items = menuItemDao.findAll();
+
+        for (MenuItem item : items)
+        {
+            System.out.println(item.getId() + ". " +
+                    item.getName() + " - $" +
+                    item.getPrice());
+        }
+
+        while (true)
+        {
+            System.out.print("Enter item id (0 to finish): ");
+            int itemId = scanner.nextInt();
+
+            if (itemId == 0) break;
+
+            MenuItem menuItem = menuItemDao.findById(itemId);
+
+            if (menuItem == null)
+            {
+                System.out.println("Invalid item!");
+                continue;
+            }
+
+            System.out.print("Enter quantity: ");
+            int qty = scanner.nextInt();
+
+            double itemTotal = menuItem.getPrice() * qty;
+            totalPrice += itemTotal;
+
+            OrderDetail detail = new OrderDetail();
+            detail.setOrderId(orderId);
+            detail.setMenuItemId(itemId);
+            detail.setQuantity(qty);
+            detail.setPrice(menuItem.getPrice());
+
+            orderDetailDao.save(detail);
+
+            System.out.println("Added: " + qty + " x " + menuItem.getName());
+        }
+
+        System.out.println("=================================");
+        System.out.println("Final Total: $" + totalPrice);
+        System.out.println("Order placed successfully!");
     }
 
-    public void showOrderHistory(int userId) {
+    public void printReceipt(int orderId)
+    {
+        List<OrderDetail> details = orderDetailDao.findByOrderId(orderId);
 
-        // TODO:
+        if (details.isEmpty())
-        // Display user's order history
+        {
+            System.out.println("No order found!");
+            return;
+        }
 
+        System.out.println("=================================");
+        System.out.println("           RECEIPT");
+        System.out.println("Order ID: " + orderId);
+        System.out.println("=================================");
+        System.out.println("Item\tQty\tPrice\tTotal");
+
+        double grandTotal = 0;
+
+        for (OrderDetail d : details)
+        {
+            MenuItem item = menuItemDao.findById(d.getMenuItemId());
+
+            double total = d.getQuantity() * d.getPrice();
+            grandTotal += total;
+
+            System.out.println(item.getName() + "\t"
+                    + d.getQuantity() + "\t"
+                    + d.getPrice() + "\t"
+                    + total);
+        }
+
+        System.out.println("=================================");
+        System.out.println("Grand Total: $" + grandTotal);
+        System.out.println("=================================");
     }
 
+    public void showOrderHistory(int userId)
+    {
+        List<Order> orders = orderDao.findByUserId(userId);
+
+        if (orders.isEmpty())
+        {
+            System.out.println("No orders found.");
+            return;
+        }
+
+        System.out.println("=================================");
+        System.out.println("       ORDER HISTORY");
+        System.out.println("=================================");
+
+        for (Order order : orders)
+        {
+            System.out.println("Order ID: " + order.getId());
+            System.out.println("Date: " + order.getCreatedAt());
+            System.out.println("Total: $" + order.getTotalPrice());
+            System.out.println("---------------------------------");
+        }
+    }
 }

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

@@ -1,16 +1,34 @@
 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 Scanner scanner =
+    private final AuthService authService;
-            new Scanner(System.in);
+    private final MenuService menuService;
+    private final OrderService orderService;
 
-    public void start() {
+    private User loggedInUser;
 
-        while (true) {
+    public ConsoleMenu(AuthService authService,
+                       MenuService menuService,
+                       OrderService orderService) {
+        this.authService = authService;
+        this.menuService = menuService;
+        this.orderService = orderService;
+    }
 
+    public void start()
+    {
+        while (true)
+        {
             System.out.println();
             System.out.println("===== JAVA PIZZERIA =====");
             System.out.println("1. Login");
@@ -18,27 +36,91 @@ public class ConsoleMenu {
             System.out.println("3. Exit");
 
             int choice = scanner.nextInt();
+            scanner.nextLine();
 
-            switch (choice) {
+            switch (choice)
+            {
+                case 1 -> login();
 
-                case 1:
+                case 2 -> register();
-                    // TODO
-                    break;
 
-                case 2:
+                case 3 ->
-                    // TODO
+                {
-                    break;
+                    System.out.println("Goodbye!");
-
-                case 3:
                     return;
+                }
 
-                default:
+                default -> System.out.println("Invalid choice");
-                    System.out.println("Invalid choice");
-
             }
-
         }
-
     }
 
+    private void login()
+    {
+        System.out.print("Username: ");
+        String username = scanner.nextLine();
+
+        System.out.print("Password: ");
+        String password = scanner.nextLine();
+
+        User user = authService.login(username, password);
+
+        if (user != null)
+        {
+            loggedInUser = user;
+            System.out.println("Login successful!");
+            userMenu();
+        }
+        else {System.out.println("Login failed!");}
+    }
+
+    private void register()
+    {
+        System.out.print("Username: ");
+        String username = scanner.nextLine();
+
+        System.out.print("Password: ");
+        String password = scanner.nextLine();
+
+        System.out.print("Email: ");
+        String email = scanner.nextLine();
+
+        boolean success = authService.register(username, password, email);
+
+        if (success) {System.out.println("Registration successful!");}
+        else {System.out.println("Registration failed!");}
+    }
+
+    private void userMenu()
+    {
+        while (true)
+        {
+            System.out.println();
+            System.out.println("===== MAIN MENU =====");
+            System.out.println("1. View Menu");
+            System.out.println("2. Place Order");
+            System.out.println("3. Order History");
+            System.out.println("4. Logout");
+
+            int choice = scanner.nextInt();
+            scanner.nextLine();
+
+            switch (choice)
+            {
+                case 1 -> menuService.showMenu();
+
+                case 2 -> orderService.placeOrder(loggedInUser.getId());
+
+                case 3 -> orderService.showOrderHistory(loggedInUser.getId());
+
+                case 4 ->
+                {
+                    loggedInUser = null;
+                    return;
+                }
+
+                default -> System.out.println("Invalid choice");
+            }
+        }
+    }
 }