fix[member]: 회원 탈퇴 시 연관 데이터 삭제 로직 추가

Author: asowjdan

backend/src/main/java/com/ai/lawyer/domain/member/entity/Member.java

@@ -1,12 +1,17 @@
 package com.ai.lawyer.domain.member.entity;
 
+import com.ai.lawyer.domain.post.entity.Post;
+import com.ai.lawyer.domain.poll.entity.PollVote;
+import com.ai.lawyer.domain.chatbot.entity.History;
 import jakarta.persistence.*;
 import jakarta.validation.constraints.*;
 import lombok.*;
 import org.hibernate.annotations.CreationTimestamp;
 import org.hibernate.annotations.UpdateTimestamp;
 
 import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
 
 @Entity
 @Table(name = "member",
@@ -63,6 +68,19 @@ public class Member implements MemberAdapter {
     @Column(name = "updated_at")
     private LocalDateTime updatedAt;
 
+    // 연관 관계: 회원 탈퇴 시 cascade 삭제
+    @OneToMany(mappedBy = "member", cascade = CascadeType.ALL, orphanRemoval = true)
+    @Builder.Default
+    private List<Post> posts = new ArrayList<>();
+
+    @OneToMany(mappedBy = "member", cascade = CascadeType.ALL, orphanRemoval = true)
+    @Builder.Default
+    private List<PollVote> pollVotes = new ArrayList<>();
+
+    @OneToMany(mappedBy = "memberId", cascade = CascadeType.ALL, orphanRemoval = true)
+    @Builder.Default
+    private List<History> histories = new ArrayList<>();
+
     @Getter
     public enum Gender {
         MALE("남성"), FEMALE("여성"), OTHER("기타");

backend/src/main/java/com/ai/lawyer/domain/member/entity/OAuth2Member.java

@@ -1,12 +1,17 @@
 package com.ai.lawyer.domain.member.entity;
 
+import com.ai.lawyer.domain.post.entity.Post;
+import com.ai.lawyer.domain.poll.entity.PollVote;
+import com.ai.lawyer.domain.chatbot.entity.History;
 import jakarta.persistence.*;
 import jakarta.validation.constraints.*;
 import lombok.*;
 import org.hibernate.annotations.CreationTimestamp;
 import org.hibernate.annotations.UpdateTimestamp;
 
 import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
 
 @Entity
 @Table(name = "oauth2_member",
@@ -74,6 +79,19 @@ public class OAuth2Member implements MemberAdapter {
     @Column(name = "updated_at")
     private LocalDateTime updatedAt;
 
+    // 연관 관계: 회원 탈퇴 시 cascade 삭제
+    @OneToMany(mappedBy = "member", cascade = CascadeType.ALL, orphanRemoval = true)
+    @Builder.Default
+    private List<Post> posts = new ArrayList<>();
+
+    @OneToMany(mappedBy = "member", cascade = CascadeType.ALL, orphanRemoval = true)
+    @Builder.Default
+    private List<PollVote> pollVotes = new ArrayList<>();
+
+    @OneToMany(mappedBy = "memberId", cascade = CascadeType.ALL, orphanRemoval = true)
+    @Builder.Default
+    private List<History> histories = new ArrayList<>();
+
     @Getter
     public enum Provider {
         KAKAO("카카오"), NAVER("네이버");

backend/src/main/java/com/ai/lawyer/domain/member/service/MemberService.java

@@ -186,19 +186,29 @@ public String getLoginIdByMemberId(Long memberId) {
 
     @Transactional
     public void deleteMember(String loginId) {
-        // Member 또는 OAuth2Member 삭제
+        log.info("회원 탈퇴 시작: loginId={}", loginId);
+
+        // 1. Redis 토큰 삭제
+        try {
+            tokenProvider.deleteAllTokens(loginId);
+            log.info("Redis 토큰 삭제 완료: loginId={}", loginId);
+        } catch (Exception e) {
+            log.error("Redis 토큰 삭제 실패: loginId={}, error={}", loginId, e.getMessage());
+        }
+
+        // 2. Member 또는 OAuth2Member 삭제 (cascade로 연관 데이터 자동 삭제)
         java.util.Optional<Member> regularMember = memberRepository.findByLoginId(loginId);
         if (regularMember.isPresent()) {
             memberRepository.delete(regularMember.get());
-            log.info("일반 회원 삭제 완료: loginId={}", loginId);
+            log.info("일반 회원 삭제 완료 (연관 데이터 cascade 삭제): loginId={}", loginId);
             return;
         }
 
         if (oauth2MemberRepository != null) {
             java.util.Optional<OAuth2Member> oauth2Member = oauth2MemberRepository.findByLoginId(loginId);
             if (oauth2Member.isPresent()) {
                 oauth2MemberRepository.delete(oauth2Member.get());
-                log.info("OAuth2 회원 삭제 완료: loginId={}", loginId);
+                log.info("OAuth2 회원 삭제 완료 (연관 데이터 cascade 삭제): loginId={}", loginId);
                 return;
             }
         }

backend/src/test/java/com/ai/lawyer/domain/member/service/MemberServiceTest.java

@@ -300,8 +300,9 @@ void withdraw_Success() {
         memberService.deleteMember(loginId);
 
         // then
+        verify(tokenProvider).deleteAllTokens(loginId); // Redis 토큰 삭제
         verify(memberRepository).findByLoginId(loginId);
-        verify(memberRepository).delete(member);
+        verify(memberRepository).delete(member); // 회원 삭제 (cascade로 연관 데이터 자동 삭제)
     }
 
     @Test