hotfix: 채팅 푸시알림 형식 수정

Author: YunJaeHoon

src/main/java/com/airfryer/repicka/common/firebase/dto/FCMNotificationReq.java

@@ -15,22 +15,35 @@ public class FCMNotificationReq {
     private NotificationType notificationType;
     private String relatedId;  // appointmentId, chatId 등
     private String relatedName;  // 약속 관련 아이템 이름 또는 채팅 상대 이름
-    
-    // 제목 생성
+
+    private String customTitle;
+    private String customBody;
+
     public String getTitle() {
-        return notificationType.getTitle();
+        return customTitle != null ? customTitle : notificationType.getTitle();
     }
-    
-    // 내용 생성  
+
     public String getBody() {
-        return notificationType.getFormattedBody(relatedName);
+        return customBody != null ? customBody : notificationType.getFormattedBody(relatedName);
     }
 
-    public static FCMNotificationReq of(NotificationType notificationType, String id, String name) {
+    public static FCMNotificationReq of(NotificationType notificationType, String id, String name)
+    {
         return FCMNotificationReq.builder()
             .notificationType(notificationType)
             .relatedId(id)
             .relatedName(name)
             .build();
     }
+
+    // 채팅 메시지 전용 팩토리 메서드
+    public static FCMNotificationReq of(String chatId, String customTitle, String customBody)
+    {
+        return FCMNotificationReq.builder()
+                .notificationType(NotificationType.CHAT_MESSAGE)
+                .relatedId(chatId)
+                .customTitle(customTitle)
+                .customBody(customBody)
+                .build();
+    }
 } 

src/main/java/com/airfryer/repicka/domain/chat/service/ChatWebSocketService.java

@@ -190,7 +190,11 @@ public void sendMessageChat(User user, ChatRoom chatRoom, Chat chat)
             /// 푸시 알림 전송
 
             // 푸시 알림 전송
-            FCMNotificationReq notificationReq = FCMNotificationReq.of(NotificationType.CHAT_MESSAGE, chat.getId().toHexString(), user.getNickname());
+            FCMNotificationReq notificationReq = FCMNotificationReq.of(
+                    chat.getId().toHexString(),
+                    "[" + chatRoom.getItem().getTitle() + "] " + user.getNickname(),
+                    chat.getContent()
+            );
             fcmService.sendNotification(opponent.getFcmToken(), notificationReq);
 
         } catch (Exception e) {