feat: Order 및 Stock 이벤트에 상품명 필드 추가 및 랭킹 매핑 메서드 확장

- `ProductStockEvent`와 `OrderCreatedEvent`의 상품명(`productName`) 필드 추가로 이벤트 정보를 확장
- 랭킹 엔티티 매핑을 위한 `RankingInfo` 생성 메서드 확장 (주간 및 월간 랭킹 지원)

Author: yeonjiyeon

apps/commerce-api/src/main/java/com/loopers/application/order/event/OrderCreatedEvent.java

@@ -7,7 +7,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
-import java.util.function.Function;
 import java.util.stream.Collectors;
 
 public record OrderCreatedEvent(
@@ -22,7 +21,7 @@ public record OrderCreatedEvent(
     Long couponId
 ) {
 
-  public record OrderItemInfo(Long productId, int quantity, long price, int remainStock) {
+  public record OrderItemInfo(Long productId, String productName, int quantity, long price, int remainStock) {
 
   }
 
@@ -46,6 +45,7 @@ public static OrderCreatedEvent of(
           Product product = productMap.get(item.getProductId());
           return new OrderItemInfo(
               item.getProductId(),
+              product != null ? product.getName() : "Unknown",
               item.getQuantity(),
               product != null ? product.getPrice().getValue() : 0,
               product != null ? product.getStock() : 0

apps/commerce-api/src/main/java/com/loopers/application/order/event/OrderSalesAggregateListener.java

@@ -24,6 +24,7 @@ public void handleOrderCreated(OrderCreatedEvent event) {
 
       ProductStockEvent kafkaEvent = ProductStockEvent.of(
           item.productId(),
+          item.productName(),
           item.quantity(),
           item.remainStock(),
           item.price()

apps/commerce-api/src/main/java/com/loopers/application/rank/RankingInfo.java

@@ -1,6 +1,8 @@
 package com.loopers.application.rank;
 
 import com.loopers.domain.product.Product;
+import com.loopers.domain.rank.monthly.MonthlyRankingMV;
+import com.loopers.domain.rank.weekly.WeeklyRankingMV;
 
 public record RankingInfo(
     Long productId,
@@ -19,4 +21,24 @@ public static RankingInfo of(Product product, int currentRank) {
         currentRank
     );
   }
+
+  public static RankingInfo from(WeeklyRankingMV mv) {
+    return new RankingInfo(
+        mv.getProductId(),
+        mv.getProductName(),
+        mv.getPrice(),
+        mv.isSoldOut(),
+        mv.getCurrentRank()
+    );
+  }
+
+  public static RankingInfo from(MonthlyRankingMV mv) {
+    return new RankingInfo(
+        mv.getProductId(),
+        mv.getProductName(),
+        mv.getPrice(),
+        mv.isSoldOut(),
+        mv.getCurrentRank()
+    );
+  }
 }

modules/kafka/src/main/java/com/loopers/event/ProductStockEvent.java

@@ -6,15 +6,17 @@
 public record ProductStockEvent(
     String eventId,
     Long productId,
+    String productName,
     int sellQuantity,
     int currentStock,
     long price,
     LocalDateTime createdAt
 ) {
-  public static ProductStockEvent of(Long productId, int sellQuantity, int currentStock, long price) {
+  public static ProductStockEvent of(Long productId, String productName, int sellQuantity, int currentStock, long price) {
     return new ProductStockEvent(
         UUID.randomUUID().toString(),
         productId,
+        productName,
         sellQuantity,
         currentStock,
         price,