hotfix : 채팅룸 최신순으로 조회

Author: yyytir777

src/main/java/ita/tinybite/domain/chat/repository/ChatRoomMemberRepository.java

@@ -5,8 +5,9 @@
 import ita.tinybite.domain.chat.enums.ChatRoomType;
 import ita.tinybite.domain.party.entity.Party;
 import ita.tinybite.domain.user.entity.User;
-import org.springframework.data.domain.Limit;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import java.util.List;
 import java.util.Optional;
@@ -20,4 +21,13 @@ public interface ChatRoomMemberRepository extends JpaRepository<ChatRoomMember,
     Optional<ChatRoomMember> findByChatRoomAndUserAndChatRoom_Type(ChatRoom chatRoom, User user, ChatRoomType chatRoomType);
 
     Optional<ChatRoomMember> findByUserAndChatRoom_typeAndChatRoom_Party(User user, ChatRoomType chatRoomType, Party chatRoomParty);
+
+    @Query("SELECT cr " +
+            "FROM ChatRoom cr " +
+            "JOIN ChatRoomMember crm ON crm.chatRoom = cr " +
+            "LEFT JOIN ChatMessage cm ON cm.chatRoomId = cr.id " +
+            "WHERE crm.user = :user AND cr.type = :type " +
+            "GROUP BY cr.id " +
+            "ORDER BY MAX(cm.createdAt) DESC")
+    List<ChatRoom> findByUserOrderByLatestMessage(@Param("user") User user, @Param("type") ChatRoomType type);
 }

src/main/java/ita/tinybite/domain/chat/service/ChatRoomService.java

@@ -42,10 +42,7 @@ public class ChatRoomService {
     public List<OneToOneChatRoomResDto> getOneToOneRooms() {
         User currentUser = securityProvider.getCurrentUser();
 
-        // 유저가 참여 중인 chatRoom (이면서 일대일 채팅만)
-        List<ChatRoom> chatRooms = chatRoomMemberRepository.findByUser(currentUser).stream()
-                .map(ChatRoomMember::getChatRoom)
-                .filter(chatRoom -> chatRoom.getType().equals(ChatRoomType.ONE_TO_ONE)).toList();
+        List<ChatRoom> chatRooms = chatRoomMemberRepository.findByUserOrderByLatestMessage(currentUser, ChatRoomType.ONE_TO_ONE);
 
         return chatRooms.stream()
                 .map(chatRoom -> {
@@ -84,8 +81,7 @@ public List<GroupChatRoomResDto> getGroupRooms() {
         User user = securityProvider.getCurrentUser();
 
         // 유저가 참여 중인 chatRoom (이면서 그룹 채팅만)
-        List<ChatRoom> chatRooms = chatRoomMemberRepository.findByUser(user).stream()
-                .map(ChatRoomMember::getChatRoom)
+        List<ChatRoom> chatRooms = chatRoomMemberRepository.findByUserOrderByLatestMessage(user, ChatRoomType.GROUP).stream()
                 .filter(chatRoom -> chatRoom.getType().equals(ChatRoomType.GROUP))
                 .filter(chatRoom -> chatRoom.getParticipants().size() > 1)
                 .toList();