feat: DELETE /users/withdraw 추가

src/main/java/gg/agit/konect/domain/chat/repository/ChatMessageRepository.java

@@ -4,6 +4,7 @@
 
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.query.Param;
@@ -31,4 +32,11 @@ public interface ChatMessageRepository extends Repository<ChatMessage, Integer>
         AND cm.isRead = false
         """)
     List<ChatMessage> findUnreadMessages(@Param("chatRoomId") Integer chatRoomId, @Param("receiverId") Integer receiverId);
+
+    @Modifying
+    @Query("""
+        DELETE FROM ChatMessage cm
+        WHERE cm.sender.id = :userId OR cm.receiver.id = :userId
+        """)
+    void deleteByUserId(@Param("userId") Integer userId);
 }

src/main/java/gg/agit/konect/domain/chat/repository/ChatRoomRepository.java

@@ -3,6 +3,7 @@
 import java.util.List;
 import java.util.Optional;
 
+import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.query.Param;
@@ -40,4 +41,11 @@ public interface ChatRoomRepository extends Repository<ChatRoom, Integer> {
            OR (cr.sender.id = :userId2 AND cr.receiver.id = :userId1)
         """)
     Optional<ChatRoom> findByTwoUsers(@Param("userId1") Integer userId1, @Param("userId2") Integer userId2);
+
+    @Modifying
+    @Query("""
+        DELETE FROM ChatRoom cr
+        WHERE cr.sender.id = :userId OR cr.receiver.id = :userId
+        """)
+    void deleteByUserId(@Param("userId") Integer userId);
 }

src/main/java/gg/agit/konect/domain/club/repository/ClubApplyRepository.java

@@ -9,4 +9,6 @@ public interface ClubApplyRepository extends Repository<ClubApply, Integer> {
     boolean existsByClubIdAndUserId(Integer clubId, Integer userId);
 
     ClubApply save(ClubApply clubApply);
+
+    void deleteByUserId(Integer userId);
 }

src/main/java/gg/agit/konect/domain/club/repository/ClubMemberRepository.java

@@ -33,4 +33,8 @@ public interface ClubMemberRepository extends Repository<ClubMember, ClubMemberI
     Optional<ClubMember> findPresidentByClubId(@Param("clubId") Integer clubId);
 
     boolean existsByClubIdAndUserId(Integer clubId, Integer userId);
+
+    List<ClubMember> findByUserId(Integer userId);
+
+    void deleteByUserId(Integer userId);
 }

src/main/java/gg/agit/konect/domain/notice/repository/CouncilNoticeReadRepository.java

@@ -26,4 +26,6 @@ WHERE NOT EXISTS (
                 )
         """)
     Long countUnreadNoticesByUserId(@Param("userId") Integer userId);
+
+    void deleteByUserId(Integer userId);
 }

src/main/java/gg/agit/konect/domain/user/controller/UserApi.java

@@ -1,6 +1,7 @@
 package gg.agit.konect.domain.user.controller;
 
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.PutMapping;
@@ -57,4 +58,8 @@ ResponseEntity<Void> updateMyInfo(
     @PostMapping("/logout")
     @PublicApi
     ResponseEntity<Void> logout(HttpServletRequest request);
+
+    @Operation(summary = "회원탈퇴를 한다.")
+    @DeleteMapping("/withdraw")
+    ResponseEntity<Void> logout(@UserId Integer userId);
 }

src/main/java/gg/agit/konect/domain/user/controller/UserController.java

@@ -1,6 +1,7 @@
 package gg.agit.konect.domain.user.controller;
 
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -77,4 +78,10 @@ public ResponseEntity<Void> logout(HttpServletRequest request) {
 
         return ResponseEntity.ok().build();
     }
+
+    @DeleteMapping("/withdraw")
+    public ResponseEntity<Void> logout(@UserId Integer userId) {
+        userService.deleteUser(userId);
+        return ResponseEntity.notFound().build();
+    }
 }

src/main/java/gg/agit/konect/domain/user/repository/UserRepository.java

@@ -27,4 +27,6 @@ default User getById(Integer id) {
     boolean existsByPhoneNumberAndIdNot(String phoneNumber, Integer id);
 
     User save(User user);
+
+    void delete(User user);
 }

src/main/java/gg/agit/konect/domain/user/service/UserService.java

@@ -1,9 +1,17 @@
 package gg.agit.konect.domain.user.service;
 
+import static gg.agit.konect.global.code.ApiResponseCode.CANNOT_DELETE_CLUB_PRESIDENT;
+
+import java.util.List;
+
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.StringUtils;
 
+import gg.agit.konect.domain.chat.repository.ChatMessageRepository;
+import gg.agit.konect.domain.chat.repository.ChatRoomRepository;
+import gg.agit.konect.domain.club.model.ClubMember;
+import gg.agit.konect.domain.club.repository.ClubApplyRepository;
 import gg.agit.konect.domain.club.repository.ClubMemberRepository;
 import gg.agit.konect.domain.notice.repository.CouncilNoticeReadRepository;
 import gg.agit.konect.domain.university.model.University;
@@ -30,6 +38,9 @@ public class UserService {
     private final UniversityRepository universityRepository;
     private final ClubMemberRepository clubMemberRepository;
     private final CouncilNoticeReadRepository councilNoticeReadRepository;
+    private final ClubApplyRepository clubApplyRepository;
+    private final ChatMessageRepository chatMessageRepository;
+    private final ChatRoomRepository chatRoomRepository;
 
     @Transactional
     public Integer signup(String email, Provider provider, SignupRequest request) {
@@ -117,4 +128,23 @@ private void validatePhoneNumberDuplication(User user, UserUpdateRequest request
             throw CustomException.of(ApiResponseCode.DUPLICATE_PHONE_NUMBER);
         }
     }
+
+    @Transactional
+    public void deleteUser(Integer userId) {
+        User user = userRepository.getById(userId);
+
+        List<ClubMember> clubMembers = clubMemberRepository.findByUserId(userId);
+        boolean isPresident = clubMembers.stream().anyMatch(ClubMember::isPresident);
+        if (isPresident) {
+            throw CustomException.of(CANNOT_DELETE_CLUB_PRESIDENT);
+        }
+
+        // TODO. 메시지 데이터 히스토리 테이블로 이관 로직 추가
+        chatMessageRepository.deleteByUserId(userId);
+        chatRoomRepository.deleteByUserId(userId);
+        councilNoticeReadRepository.deleteByUserId(userId);
+        clubApplyRepository.deleteByUserId(userId);
+        clubMemberRepository.deleteByUserId(userId);
+        userRepository.delete(user);
+    }
 }

src/main/java/gg/agit/konect/global/code/ApiResponseCode.java

@@ -21,6 +21,7 @@ public enum ApiResponseCode {
     FAILED_EXTRACT_EMAIL(HttpStatus.BAD_REQUEST, "OAuth 로그인 과정에서 이메일 정보를 가져올 수 없습니다."),
     CANNOT_CREATE_CHAT_ROOM_WITH_SELF(HttpStatus.BAD_REQUEST, "자기 자신과는 채팅방을 만들 수 없습니다."),
     REQUIRED_CLUB_APPLY_ANSWER_MISSING(HttpStatus.BAD_REQUEST, "필수 가입 답변이 누락되었습니다."),
+    CANNOT_DELETE_CLUB_PRESIDENT(HttpStatus.BAD_REQUEST, "동아리 회장인 경우 회장을 양도하고 탈퇴해야 합니다."),
 
     // 401 Unauthorized
     INVALID_SESSION(HttpStatus.UNAUTHORIZED, "올바르지 않은 인증 정보 입니다."),