feat: 회원 탈퇴 로직 추가

src/main/java/com/taba/nimonaemo/member/controller/UserController.java

@@ -101,12 +101,13 @@ public ResponseMemberInfoDto getMemberInfo(AppAuthentication auth) {
         return memberService.getMemberInfo(auth.getUserId());
     }
 
-//    /**
-//     * 회원탈퇴
-//     * <p>회원은 바로 삭제되지 않고, 일정 기간 뒤에 삭제됩니다. 삭제시에도 개인 정보만 삭제됩니다.</p>
-//     */
-//    @DeleteMapping
-//    public void withdraw(AppAuthentication auth) {
-//        memberWithdrawService.withdraw(auth.getUserId());
-//    }
+    /**
+     * 회원탈퇴
+     * <p>회원은 바로 삭제되지 않고(비활성화로 전환), 일정 기간 뒤에 삭제됩니다.</p>
+     */
+    @DeleteMapping
+    @MemberAuth
+    public void withdraw(AppAuthentication auth) {
+        memberWithdrawService.withdraw(auth.getUserId());
+    }
 }

src/main/java/com/taba/nimonaemo/member/repository/MemberRepository.java

@@ -21,4 +21,7 @@ public interface MemberRepository extends JpaRepository<Member, Long> , JpaSpeci
 
     @Query("select m from Member m where m.status = 'ACTIVE' and m.name = :name")
     Optional<Member> findByName(String name);
+
+    @Query("select m from Member m where m.status = 'INACTIVE' and m.phone = :phone")
+    Optional<Member> findByInactiveByPhone(String phone);
 }

src/main/java/com/taba/nimonaemo/member/service/MemberWithdrawService.java

@@ -0,0 +1,22 @@
+package com.taba.nimonaemo.member.service;
+
+import com.taba.nimonaemo.member.exception.UserNotFoundException;
+import com.taba.nimonaemo.member.model.MemberStatus;
+import com.taba.nimonaemo.member.model.entity.Member;
+import com.taba.nimonaemo.member.repository.MemberRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+@Transactional(readOnly = true)
+public class MemberWithdrawService {
+    private final MemberRepository memberRepository;
+
+    @Transactional
+    public void withdraw(Long userId) {
+        Member member = memberRepository.findById(userId).orElseThrow(UserNotFoundException::new);
+        member.changeStatus(MemberStatus.INACTIVE);
+    }
+}