implement OrderService.java

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

@@ -1,25 +1,118 @@
 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 {
 
+    MenuItemDao menuItemDao = new MenuItemDao();
+    OrderDetailDao orderDetailDao = new OrderDetailDao();
+    OrderDao orderDao = new OrderDao();
+
+    Scanner in = new Scanner(System.in);
+
     public void placeOrder(int userId) {
 
-        // TODO:
-        // Create order
+        List<OrderDetail> details = new ArrayList<>();
+        int totalPrice = 0;
 
+        // Create order
+        while (true) {
+            System.out.println("Enter the id of your order (-1 to exit) : ");
+            int id = in.nextInt();
+
+            if(id==-1) break;
+
+            MenuItem menuItem = menuItemDao.findById(id);
+
+            if(menuItem != null) {
+
+                System.out.println("Enter quantity: ");
+                int quantity = in.nextInt();
+
+                if(quantity<=0) {
+                    System.out.println("Quantity can't be negative");
+                    continue;
+                }
+
+                OrderDetail orderDetail = new OrderDetail();
+
+                orderDetail.setPrice(menuItem.getPrice());
+                orderDetail.setQuantity(quantity);
+                orderDetail.setMenuItemId(id);
+
+                details.add(orderDetail);
+                totalPrice += menuItem.getPrice()*quantity;
+
+                System.out.println(quantity+ " " + menuItem.getName() + "(s) got added to your order.");
+            }
+        }
+
+        if (totalPrice<=0) return;
+
+        Order order = new Order();
+        order.setTotalPrice(totalPrice);
+        order.setUserId(userId);
+        int orderId = orderDao.save(order);
+
+        if (orderId == -1) {
+            System.out.println("Order could not be saved");
+            return;
+        }
+
+        for(OrderDetail orderDetail : details) {
+            orderDetail.setOrderId(orderId);
+            orderDetailDao.save(orderDetail);
+        }
+
+        printReceipt(orderId);
     }
 
     public void printReceipt(int orderId) {
 
-        // TODO:
         // Print order receipt
+        List<OrderDetail> details = orderDetailDao.findByOrderId(orderId);
 
+        if (details.isEmpty()) return;
+
+        double totalPrice = 0;
+
+        System.out.println("\n===== RECEIPT =====");
+
+        for (OrderDetail detail : details) {
+
+            MenuItem item = menuItemDao.findById(detail.getMenuItemId());
+
+            double subtotal = detail.getPrice() * detail.getQuantity();
+            totalPrice += subtotal;
+
+            System.out.println( item.getName() + " | Quantity: " + detail.getQuantity() +
+                            " | Price: " + detail.getPrice() + "$ | Total: " + subtotal + "$");
+        }
+        System.out.println("\nFinal Total: $" + totalPrice);
     }
 
     public void showOrderHistory(int userId) {
 
-        // TODO:
         // Display user's order history
+        List<Order> orders = orderDao.findByUserId(userId);
+
+        if (orders.isEmpty()) return;
+
+        System.out.println("\n===== ORDER HISTORY =====");
+
+        for (Order order : orders) {
+            System.out.println( "Order #" + order.getId() + " | Date: " + order.getCreatedAt() +
+                            " | Total: " + order.getTotalPrice() + "$");
+        }
 
     }