hotfix : 채팅방 목록 조회 시 상대방 데이터 조회 로직 수정

Author: yyytir777

src/main/java/ita/tinybite/domain/chat/dto/res/OneToOneChatRoomDetailResDto.java

@@ -3,7 +3,6 @@
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 import ita.tinybite.domain.chat.entity.ChatRoom;
-import ita.tinybite.domain.chat.entity.ChatRoomMember;
 import ita.tinybite.domain.chat.enums.ParticipantType;
 import ita.tinybite.domain.party.entity.Party;
 import ita.tinybite.domain.party.entity.PartyParticipant;
@@ -24,9 +23,8 @@ public record OneToOneChatRoomDetailResDto(
         String partyTitle
 ) {
 
-    public static OneToOneChatRoomDetailResDto of(Party party, PartyParticipant partyParticipant, User currentUser, ChatRoom groupChatRoom, ChatRoomMember chatRoomMembers) {
+    public static OneToOneChatRoomDetailResDto of(Party party, PartyParticipant partyParticipant, User currentUser, ChatRoom groupChatRoom, User participant) {
         User host = partyParticipant.getParty().getHost();
-        User participant = chatRoomMembers.getUser();
 
         ParticipantType type = currentUser.getUserId().equals(host.getUserId()) ? ParticipantType.HOST : ParticipantType.PARTICIPANT;
         User targetUser = currentUser.getUserId().equals(participant.getUserId()) ? host : participant; // 상대방의 유저 (호스트면 참여자 / 참여자면 호스트)

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

@@ -61,15 +61,15 @@ public List<OneToOneChatRoomResDto> getOneToOneRooms() {
                     PartyParticipant partyParticipant = partyParticipantRepository.findByOneToOneChatRoom(chatRoom).orElseThrow();
                     ParticipantStatus status = partyParticipant.getStatus();
 
-                    // (chatRoom, user)로 채팅참여 엔티티 조회
+                    User targetUser = partyParticipant.getUser();
                     ChatRoomMember chatRoomMember = chatRoomMemberRepository.findByChatRoomAndUser(chatRoom, user).orElseThrow();
 
                     // 마지막으로 읽은 시점을 기점으로 몇 개의 메시지가 안 읽혔는지 확인
                     long unreadCnt = chatMessageRepository.countByChatRoomIdAndCreatedAtAfterAndSenderIdNot(chatRoom.getId(), chatRoomMember.getLastReadAt(), user.getUserId());
 
                     String content = recentMessage != null ? recentMessage.getContent() : "";
                     // dto로 합침
-                    return OneToOneChatRoomResDto.of(chatRoom, user, chatRoom.getParticipants().get(0).getUser(), content, timeAgo, status, unreadCnt);
+                    return OneToOneChatRoomResDto.of(chatRoom, user, targetUser, content, timeAgo, status, unreadCnt);
                 })
                 .toList();
     }
@@ -107,8 +107,7 @@ public OneToOneChatRoomDetailResDto getOneToOneRoom(Long chatRoomId) {
         if(!chatRoom.getType().equals(ChatRoomType.ONE_TO_ONE)) throw BusinessException.of(ChatRoomErrorCode.NOT_ONE_TO_ONE);
 
         PartyParticipant partyParticipant = partyParticipantRepository.findByOneToOneChatRoomAndStatus(chatRoom, ParticipantStatus.PENDING);
-
-        ChatRoomMember participant = chatRoom.getParticipants().stream().findFirst().get();
+        User participant = partyParticipant.getUser();
 
         ChatRoom groupChatRoom = chatRoomRepository.findByPartyAndType(chatRoom.getParty(), ChatRoomType.GROUP).orElseGet(null);
         return OneToOneChatRoomDetailResDto.of(chatRoom.getParty(), partyParticipant, currentUser, groupChatRoom, participant);