채팅방 수정(판매자 또는 구매자 마지막 확인 시간 수정) 및 삭제 API 구현

src/main/java/kr/co/fastcampus/yanabada/domain/chat/controller/ChatController.java

@@ -2,15 +2,19 @@
 
 import java.util.List;
 import kr.co.fastcampus.yanabada.common.response.ResponseBody;
+import kr.co.fastcampus.yanabada.domain.chat.dto.request.ChatRoomModifyRequest;
 import kr.co.fastcampus.yanabada.domain.chat.dto.request.ChatRoomSaveRequest;
 import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatMessageInfoResponse;
 import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatRoomInfoResponse;
+import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatRoomModifyResponse;
 import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatRoomSummaryResponse;
 import kr.co.fastcampus.yanabada.domain.chat.service.ChatService;
 import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -44,4 +48,20 @@ public ResponseBody<List<ChatMessageInfoResponse>> getChatRoom(
         Long memberId = 1L;
         return ResponseBody.ok(chatService.getChatRoomMessages(memberId, chatRoomCode));
     }
+
+    @PutMapping
+    public ResponseBody<ChatRoomModifyResponse> modifyChatRoom(
+        @RequestBody ChatRoomModifyRequest request
+    ) {
+        Long memberId = 1L;
+        return ResponseBody.ok(chatService.updateChatRoom(memberId, request));
+    }
+
+    @DeleteMapping
+    public ResponseBody<ChatRoomModifyResponse> modifyOrDeleteChatRoom(
+        @RequestBody ChatRoomModifyRequest request
+    ) {
+        Long memberId = 1L;
+        return ResponseBody.ok(chatService.modifyOrDeleteChatRoom(memberId, request));
+    }
 }

src/main/java/kr/co/fastcampus/yanabada/domain/chat/dto/request/ChatRoomModifyRequest.java

@@ -0,0 +1,12 @@
+package kr.co.fastcampus.yanabada.domain.chat.dto.request;
+
+
+import jakarta.validation.constraints.Pattern;
+import jakarta.validation.constraints.Size;
+
+public record ChatRoomModifyRequest(
+    @Size(min = 18, max = 18, message = "유효하지 않은 채팅방 코드입니다.")
+    @Pattern(regexp = "^[0-9a-f]+$", message = "유효하지 않은 채팅방 코드입니다.")
+    String chatRoomCode
+) {
+}

src/main/java/kr/co/fastcampus/yanabada/domain/chat/dto/response/ChatRoomModifyResponse.java

@@ -0,0 +1,17 @@
+package kr.co.fastcampus.yanabada.domain.chat.dto.response;
+
+import lombok.Builder;
+
+@Builder
+public record ChatRoomModifyResponse(
+    String chatRoomCode,
+    Long updatedMemberId
+) {
+
+    public static ChatRoomModifyResponse create(String chatRoomCode, Long updatedMemberId) {
+        return ChatRoomModifyResponse.builder()
+            .chatRoomCode(chatRoomCode)
+            .updatedMemberId(updatedMemberId)
+            .build();
+    }
+}

src/main/java/kr/co/fastcampus/yanabada/domain/chat/entity/ChatRoom.java

@@ -103,4 +103,20 @@ public static ChatRoom create(
     public void addChatMessage(ChatMessage message) {
         messages.add(message);
     }
+
+    public void updateSellerLastCheckTime(LocalDateTime lastCheckTime) {
+        this.sellerLastCheckTime = lastCheckTime;
+    }
+
+    public void updateBuyerLastCheckTime(LocalDateTime lastCheckTime) {
+        this.buyerLastCheckTime = lastCheckTime;
+    }
+
+    public void updateHasSellerLeft(Boolean hasLeft) {
+        this.hasSellerLeft = hasLeft;
+    }
+
+    public void updateHasBuyerLeft(Boolean hasLeft) {
+        this.hasBuyerLeft = hasLeft;
+    }
 }

src/main/java/kr/co/fastcampus/yanabada/domain/chat/service/ChatService.java

@@ -7,9 +7,11 @@
 import kr.co.fastcampus.yanabada.common.exception.CannotNegotiateOwnProductException;
 import kr.co.fastcampus.yanabada.common.exception.IncorrectChatRoomMember;
 import kr.co.fastcampus.yanabada.common.exception.NegotiationNotPossibleException;
+import kr.co.fastcampus.yanabada.domain.chat.dto.request.ChatRoomModifyRequest;
 import kr.co.fastcampus.yanabada.domain.chat.dto.request.ChatRoomSaveRequest;
 import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatMessageInfoResponse;
 import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatRoomInfoResponse;
+import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatRoomModifyResponse;
 import kr.co.fastcampus.yanabada.domain.chat.dto.response.ChatRoomSummaryResponse;
 import kr.co.fastcampus.yanabada.domain.chat.entity.ChatMessage;
 import kr.co.fastcampus.yanabada.domain.chat.entity.ChatRoom;
@@ -162,4 +164,58 @@ private void checkChatRoomMember(ChatRoom chatRoom, Member member) {
             throw new IncorrectChatRoomMember();
         }
     }
+
+    @Transactional
+    public ChatRoomModifyResponse updateChatRoom(Long memberId, ChatRoomModifyRequest request) {
+        ChatRoom chatRoom = chatRoomRepository.getChatroom(request.chatRoomCode());
+        Member member = memberRepository.getMember(memberId);
+        updateLastCheckTime(chatRoom, member);
+        return ChatRoomModifyResponse.create(chatRoom.getCode(), memberId);
+    }
+
+    private void updateLastCheckTime(ChatRoom chatRoom, Member member) {
+        checkChatRoomMember(chatRoom, member);
+        LocalDateTime lastCheckTime = LocalDateTime.now();
+        if (isSeller(member, chatRoom)) {
+            chatRoom.updateSellerLastCheckTime(lastCheckTime);
+        } else {
+            chatRoom.updateBuyerLastCheckTime(lastCheckTime);
+        }
+    }
+
+    @Transactional
+    public ChatRoomModifyResponse modifyOrDeleteChatRoom(
+        Long memberId, ChatRoomModifyRequest request
+    ) {
+        ChatRoom chatRoom = chatRoomRepository.getChatroom(request.chatRoomCode());
+        Member member = memberRepository.getMember(memberId);
+        checkChatRoomMember(chatRoom, member);
+
+        if (isSeller(member, chatRoom)) {
+            handleSellerAction(chatRoom);
+        } else {
+            handleBuyerAction(chatRoom);
+        }
+        return ChatRoomModifyResponse.create(chatRoom.getCode(), memberId);
+    }
+
+    private boolean isSeller(Member member, ChatRoom chatRoom) {
+        return member.equals(chatRoom.getSeller());
+    }
+
+    private void handleSellerAction(ChatRoom chatRoom) {
+        if (chatRoom.getHasBuyerLeft()) {
+            chatRoomRepository.delete(chatRoom);
+        } else {
+            chatRoom.updateHasSellerLeft(true);
+        }
+    }
+
+    private void handleBuyerAction(ChatRoom chatRoom) {
+        if (chatRoom.getHasSellerLeft()) {
+            chatRoomRepository.delete(chatRoom);
+        } else {
+            chatRoom.updateHasBuyerLeft(true);
+        }
+    }
 }