[refactor] Order 검증 분리

- Order 생성 시 필요한 검증 및 처리를 팩토리패턴으로 분리해 처리하도록 수정

src/main/java/camp/woowak/lab/order/domain/Order.java

@@ -5,18 +5,9 @@
 import java.util.Collections;
 import java.util.List;
 
-import camp.woowak.lab.cart.domain.vo.CartItem;
 import camp.woowak.lab.customer.domain.Customer;
-import camp.woowak.lab.menu.exception.NotEnoughStockException;
 import camp.woowak.lab.order.domain.vo.OrderItem;
-import camp.woowak.lab.order.exception.EmptyCartException;
-import camp.woowak.lab.order.exception.MinimumOrderPriceNotMetException;
-import camp.woowak.lab.order.exception.MultiStoreOrderException;
-import camp.woowak.lab.order.exception.NotFoundMenuException;
-import camp.woowak.lab.payaccount.exception.InsufficientBalanceException;
-import camp.woowak.lab.payaccount.exception.NotFoundAccountException;
 import camp.woowak.lab.store.domain.Store;
-import camp.woowak.lab.store.exception.NotFoundStoreException;
 import camp.woowak.lab.vendor.domain.Vendor;
 import jakarta.persistence.CollectionTable;
 import jakarta.persistence.ElementCollection;
@@ -54,37 +45,12 @@ public class Order {
 
 	private LocalDateTime createdAt;
 
-	/**
-	 * @throws EmptyCartException 카트가 비어 있는 경우
-	 * @throws NotFoundStoreException 가게가 조회되지 않는 경우
-	 * @throws MultiStoreOrderException 여러 가게의 메뉴를 주문한 경우
-	 * @throws NotEnoughStockException 메뉴의 재고가 부족한 경우
-	 * @throws NotFoundMenuException 주문한 메뉴가 조회되지 않는 경우
-	 * @throws MinimumOrderPriceNotMetException 가게의 최소 주문금액보다 적은 금액을 주문한 경우
-	 * @throws NotFoundAccountException 구매자의 계좌가 조회되지 않는 경우
-	 * @throws InsufficientBalanceException 구매자의 계좌에 잔액이 충분하지 않은 경우
-	 */
-	public Order(Customer requester, List<CartItem> cartItems,
-				 SingleStoreOrderValidator singleStoreOrderValidator,
-				 StockRequester stockRequester, PriceChecker priceChecker, WithdrawPointService withdrawPointService,
-				 LocalDateTime createdAt) {
-		Store store = singleStoreOrderValidator.check(cartItems);
-
-		List<CartItem> stockDecreaseSuccessCartItems = null;
-		try {
-			stockDecreaseSuccessCartItems = stockRequester.request(cartItems);
-			List<OrderItem> orderItems = priceChecker.check(store, cartItems);
-			withdrawPointService.withdraw(requester, orderItems);
-			this.requester = requester;
-			this.store = store;
-			this.orderItems = orderItems;
-			this.createdAt = createdAt;
-		} catch (Exception e) {
-			if (stockDecreaseSuccessCartItems != null) {
-				stockRequester.rollback(stockDecreaseSuccessCartItems);
-			}
-			throw e;
-		}
+	public Order(Customer requester
+		, Store store, List<OrderItem> orderItems, LocalDateTime createdAt) {
+		this.requester = requester;
+		this.store = store;
+		this.orderItems = orderItems;
+		this.createdAt = createdAt;
 	}
 
 	public Customer getRequester() {

src/main/java/camp/woowak/lab/order/domain/OrderFactory.java

@@ -0,0 +1,49 @@
+package camp.woowak.lab.order.domain;
+
+import java.util.List;
+
+import org.springframework.stereotype.Component;
+
+import camp.woowak.lab.cart.domain.vo.CartItem;
+import camp.woowak.lab.customer.domain.Customer;
+import camp.woowak.lab.infra.date.DateTimeProvider;
+import camp.woowak.lab.order.domain.vo.OrderItem;
+import camp.woowak.lab.store.domain.Store;
+
+@Component
+public class OrderFactory {
+	private final SingleStoreOrderValidator singleStoreOrderValidator;
+	private final StockRequester stockRequester;
+	private final PriceChecker priceChecker;
+	private final WithdrawPointService withdrawPointService;
+	private final DateTimeProvider dateTimeProvider;
+
+	public OrderFactory(SingleStoreOrderValidator singleStoreOrderValidator,
+						StockRequester stockRequester,
+						PriceChecker priceChecker,
+						WithdrawPointService withdrawPointService, DateTimeProvider dateTimeProvider) {
+		this.singleStoreOrderValidator = singleStoreOrderValidator;
+		this.stockRequester = stockRequester;
+		this.priceChecker = priceChecker;
+		this.withdrawPointService = withdrawPointService;
+		this.dateTimeProvider = dateTimeProvider;
+	}
+
+	public Order createOrder(Customer requester, List<CartItem> cartItems) {
+		Store store = singleStoreOrderValidator.check(cartItems);
+
+		List<CartItem> stockDecreaseSuccessCartItems = null;
+		try {
+			stockDecreaseSuccessCartItems = stockRequester.request(cartItems);
+			List<OrderItem> orderItems = priceChecker.check(store, cartItems);
+			withdrawPointService.withdraw(requester, orderItems);
+
+			return new Order(requester, store, orderItems, dateTimeProvider.now());
+		} catch (Exception e) {
+			if (stockDecreaseSuccessCartItems != null) {
+				stockRequester.rollback(stockDecreaseSuccessCartItems);
+			}
+			throw e;
+		}
+	}
+}

src/main/java/camp/woowak/lab/order/service/OrderCreationService.java

@@ -12,13 +12,9 @@
 import camp.woowak.lab.customer.domain.Customer;
 import camp.woowak.lab.customer.repository.CustomerRepository;
 import camp.woowak.lab.infra.aop.DistributedLock;
-import camp.woowak.lab.infra.date.DateTimeProvider;
 import camp.woowak.lab.menu.exception.NotEnoughStockException;
 import camp.woowak.lab.order.domain.Order;
-import camp.woowak.lab.order.domain.PriceChecker;
-import camp.woowak.lab.order.domain.SingleStoreOrderValidator;
-import camp.woowak.lab.order.domain.StockRequester;
-import camp.woowak.lab.order.domain.WithdrawPointService;
+import camp.woowak.lab.order.domain.OrderFactory;
 import camp.woowak.lab.order.exception.DuplicatedOrderException;
 import camp.woowak.lab.order.exception.EmptyCartException;
 import camp.woowak.lab.order.exception.MinimumOrderPriceNotMetException;
@@ -41,13 +37,9 @@ public class OrderCreationService {
 	private final OrderRepository orderRepository;
 	private final CartRepository cartRepository;
 	private final CustomerRepository customerRepository;
-	private final SingleStoreOrderValidator singleStoreOrderValidator;
-	private final StockRequester stockRequester;
-	private final WithdrawPointService withdrawPointService;
-	private final PriceChecker priceChecker;
 	private final OrderPaymentRepository orderPaymentRepository;
 
-	private final DateTimeProvider dateTimeProvider;
+	private final OrderFactory orderFactory;
 
 	/**
 	 * @throws EmptyCartException               카트가 비어 있는 경우
@@ -68,8 +60,7 @@ public Long create(final OrderCreationCommand cmd) {
 		List<CartItem> cartItems = cart.getCartItems();
 
 		Order savedOrder = orderRepository.save(
-			new Order(requester, cartItems, singleStoreOrderValidator, stockRequester, priceChecker,
-				withdrawPointService, dateTimeProvider.now())
+			orderFactory.createOrder(requester, cartItems)
 		);
 
 		saveOrderPayment(savedOrder);