Complete OrderService

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

@@ -1,26 +1,141 @@
 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 {
 
+    private final Scanner scanner = new Scanner(System.in);
+
+    private final MenuItemDao menuItemDao = new MenuItemDao();
+    private final OrderDao orderDao = new OrderDao();
+    private final OrderDetailDao orderDetailDao = new OrderDetailDao();
+
     public void placeOrder(int userId) {
 
-        // TODO:
-        // Create order
+        List<OrderDetail> cart = new ArrayList<>();
+        double totalPrice = 0;
 
+        while (true) {
+
+            System.out.print("Enter item id or 0 to finish: ");
+            int itemId = scanner.nextInt();
+
+            if (itemId == 0) {
+                break;
+            }
+
+            MenuItem menuItem = menuItemDao.findById(itemId);
+
+            if (menuItem == null) {
+                System.out.println("Item not found.");
+                continue;
+            }
+
+            System.out.print("Enter quantity: ");
+            int quantity = scanner.nextInt();
+
+            if (quantity <= 0) {
+                System.out.println("Quantity must be greater than 0.");
+                continue;
+            }
+
+            OrderDetail detail = new OrderDetail();
+            detail.setMenuItemId(menuItem.getId());
+            detail.setQuantity(quantity);
+            detail.setPrice(menuItem.getPrice());
+
+            cart.add(detail);
+
+            totalPrice += menuItem.getPrice() * quantity;
+
+            System.out.println("Added " + quantity + "x " + menuItem.getName());
+        }
+
+        if (cart.isEmpty()) {
+            System.out.println("Order cancelled.");
+            return;
+        }
+
+        Order order = new Order();
+        order.setUserId(userId);
+        order.setTotalPrice(totalPrice);
+
+        int orderId = orderDao.save(order);
+
+        if (orderId == -1) {
+            System.out.println("Order could not be saved.");
+            return;
+        }
+
+        for (OrderDetail detail : cart) {
+            detail.setOrderId(orderId);
+            orderDetailDao.save(detail);
+        }
+
+        System.out.println("Order saved successfully.");
+        printReceipt(orderId);
     }
 
     public void printReceipt(int orderId) {
 
-        // TODO:
-        // Print order receipt
+        List<OrderDetail> details = orderDetailDao.findByOrderId(orderId);
 
+        if (details.isEmpty()) {
+            System.out.println("No details found for this order.");
+            return;
+        }
+
+        double finalTotal = 0;
+
+        System.out.println();
+        System.out.println("===== RECEIPT =====");
+
+        for (OrderDetail detail : details) {
+
+            MenuItem item = menuItemDao.findById(detail.getMenuItemId());
+
+            double subtotal = detail.getPrice() * detail.getQuantity();
+            finalTotal += subtotal;
+
+            System.out.println(
+                    item.getName() +
+                            " | Qty: " + detail.getQuantity() +
+                            " | Unit: $" + detail.getPrice() +
+                            " | Total: $" + subtotal
+            );
+        }
+
+        System.out.println("-------------------");
+        System.out.println("Final Total: $" + finalTotal);
     }
 
     public void showOrderHistory(int userId) {
 
-        // TODO:
-        // Display user's order history
+        List<Order> orders = orderDao.findByUserId(userId);
 
+        if (orders.isEmpty()) {
+            System.out.println("No orders found.");
+            return;
+        }
+
+        System.out.println();
+        System.out.println("===== ORDER HISTORY =====");
+
+        for (Order order : orders) {
+            System.out.println(
+                    "Order #" + order.getId() +
+                            " | Date: " + order.getCreatedAt() +
+                            " | Total: $" + order.getTotalPrice()
+            );
+        }
     }
-
 }