WS 10

src/main/java/dev/service/AuthService.java

@@ -1,14 +1,27 @@
 package dev.service;
 
+import dev.dao.UserDao;
+import dev.database.DatabaseConnection;
+import dev.model.OrderDetail;
 import dev.model.User;
 
+import java.sql.*;
+import java.util.Objects;
+
 public class AuthService {
 
+    UserDao userDao = new UserDao();
+
     public boolean register(String username, String password, String email) {
 
         // TODO:
         // Validate and register user
 
+        User user = userDao.findByUsername(username);
+        if (user == null) {
+            return userDao.save(new User(-1, username, password, email));
+        }
+        else System.out.println("Username already exists.");
         return false;
     }
 
@@ -16,8 +29,11 @@ public class AuthService {
 
         // TODO:
         // Authenticate user
+        User user = userDao.findByUsername(username);
 
-        return null;
+        if (user == null) System.out.println("Username was not found.");
+
+        return user;
     }
 
 }

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

@@ -1,12 +1,31 @@
 package dev.service;
 
+import dev.dao.MenuItemDao;
+import dev.database.DatabaseConnection;
+import dev.model.MenuItem;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.List;
+
 public class MenuService {
 
+    MenuItemDao menuItemDao = new MenuItemDao();
+
     public void showMenu() {
 
         // TODO:
         // Display menu items
 
+        List<MenuItem> Items = menuItemDao.findAll();
+
+        System.out.println("Available Items:");
+        for (MenuItem i : Items) {
+            System.out.println(i.getId() + " | " + i.getName() + " | " + i.getDescription() + " | " + "$" + i.getPrice());
+        }
+
     }
 
 }

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

@@ -1,12 +1,91 @@
 package dev.service;
 
+import dev.dao.MenuItemDao;
+import dev.dao.OrderDao;
+import dev.dao.OrderDetailDao;
+import dev.database.DatabaseConnection;
+import dev.model.MenuItem;
+import dev.model.Order;
+import dev.model.OrderDetail;
+
+import java.sql.*;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Scanner;
+
 public class OrderService {
 
+    OrderDetailDao orderDetailDao = new OrderDetailDao();
+    OrderDao orderDao = new OrderDao();
+    MenuItemDao menuItemDao = new MenuItemDao();
+
     public void placeOrder(int userId) {
 
         // TODO:
         // Create order
 
+        System.out.println("[Placing Order]");
+
+        int order_id = orderDao.save(new Order(-1, userId, LocalDateTime.now(), 0));
+        if (order_id == -1) {
+            System.out.println("Order id was not found.");
+            return;
+        }
+
+        Scanner scanner = new Scanner(System.in);
+
+        while (true){
+            System.out.print("\nEnter the ID of the item to add (or 0 to finish): ");
+            int itemId = scanner.nextInt();
+
+            if (itemId == 0) {
+
+                try (Connection c = DatabaseConnection.getConnection()) {
+
+                    double total = 0.0;
+                    String selectQuery = "SELECT * FROM order_details";
+                    try (Statement stmt = c.createStatement();
+                         ResultSet rs = stmt.executeQuery(selectQuery)) {
+
+                        while (rs.next()) {
+                            int orderId = rs.getInt("order_id");
+                            if (orderId == order_id) {
+                                double price = rs.getDouble("unit_price");
+                                int quantity = rs.getInt("quantity");
+                                total += price * quantity;
+                            }
+                        }
+                    }
+
+                    String insertQuery = "UPDATE orders SET total_price = ? WHERE id = ? ";
+                    try (PreparedStatement pstmt = c.prepareStatement(insertQuery)) {
+                        pstmt.setDouble(1, total);
+                        pstmt.setInt(2, order_id);
+                        pstmt.executeUpdate();
+                    }
+                }
+                catch (SQLException e) {
+                    //
+                }
+
+                break;
+            }
+
+            System.out.print("\nEnter quantity: ");
+            int quantity = scanner.nextInt();
+            System.out.println();
+
+            orderDetailDao.save(new OrderDetail(-1, order_id, itemId, quantity, 0));
+
+            MenuItem item = menuItemDao.findById(itemId);
+
+            System.out.println("Added " + quantity + "x " + item.getName() + " to your cart. \n");
+        }
+
+        printReceipt(order_id);
+
+        System.out.println("Order saved successfully!");
+
     }
 
     public void printReceipt(int orderId) {
@@ -14,6 +93,47 @@ public class OrderService {
         // TODO:
         // Print order receipt
 
+        System.out.println("[Order Summary / Receipt]");
+
+        try (Connection c = DatabaseConnection.getConnection()) {
+
+            double total_price = 1.0;
+            String selectQuery1 = "SELECT * FROM orders";
+            try (Statement stmt1 = c.createStatement();
+                 ResultSet rs1 = stmt1.executeQuery(selectQuery1)) {
+
+                boolean isInOrders = false;
+                while (rs1.next()) {
+                    int OrderId = rs1.getInt("id");
+                    if (orderId == OrderId) {
+                        isInOrders = true;
+                        total_price = rs1.getDouble("total_price");
+                        break;
+                    }
+                }
+                if (!isInOrders) {
+                    System.out.println("Order was not found.");
+                    return;
+                }
+            }
+
+            List<OrderDetail> orderDetails = orderDetailDao.findByOrderId(orderId);
+
+            System.out.println("Item | Unit Price | Quantity | Total");
+            System.out.println("---------------------------------------");
+            for (OrderDetail od : orderDetails) {
+                MenuItem menuItem = menuItemDao.findById(od.getMenuItemId());
+                System.out.println(menuItem.getName() + " | " + "$" + od.getPrice() +
+                        " | " + od.getQuantity() + " | " + "$" + od.getPrice() * od.getQuantity());
+                System.out.println("---------------------------------------");
+            }
+            System.out.println("Final Total: " + "$" + total_price + "\n");
+
+        }
+        catch (SQLException e) {
+            System.err.println("Error in connection with database: " + e.getMessage());
+            e.printStackTrace();
+        }
     }
 
     public void showOrderHistory(int userId) {
@@ -21,6 +141,13 @@ public class OrderService {
         // TODO:
         // Display user's order history
 
+        List<Order> orders = orderDao.findByUserId(userId);
+
+        System.out.println("Order Id | Date & Time | Total Price");
+        for (Order o : orders) {
+            System.out.println(o.getId() + " | " + o.getCreatedAt() + " | " + "$" + o.getTotalPrice());
+        }
+
     }
 
 }