✨ Feat: 회원 탈퇴 시, 해당 유저의 모든 FCM 토큰 지우는 로직 추가

src/main/java/treehouse/server/api/user/business/UserService.java

@@ -16,6 +16,7 @@
 import treehouse.server.global.exception.GlobalErrorCode;
 import treehouse.server.global.exception.ThrowClass.AuthException;
 import treehouse.server.global.exception.ThrowClass.GeneralException;
+import treehouse.server.global.fcm.service.FcmService;
 import treehouse.server.global.redis.service.RedisService;
 import treehouse.server.global.security.jwt.dto.TokenDTO;
 import treehouse.server.global.security.provider.TokenProvider;
@@ -39,6 +40,8 @@ public class UserService {
     private final InvitationQueryAdapter invitationQueryAdapter;
     private final UserRepository userRepository;
 
+    private final FcmService fcmService;
+
     @Transactional(readOnly = true)
     public UserResponseDTO.checkName checkName(UserRequestDTO.checkName request){
         return UserMapper.toCheckNameDTO(userQueryAdapter.checkName(request));

src/main/java/treehouse/server/api/user/presentation/UserApi.java

@@ -72,6 +72,7 @@ public CommonResponse<UserResponseDTO.checkUserStatus> checkPhoneAuth(
     public CommonResponse<UserResponseDTO.withdraw> withdraw(
             @AuthMember @Parameter(hidden = true) User user
     ){
+        fcmService.deleteAllFcmToken(user);
         return CommonResponse.onSuccess(userService.withdraw(user));
     }
 

src/main/java/treehouse/server/global/fcm/service/FcmService.java

@@ -96,4 +96,9 @@ public void sendFcmMessage(User receiver, String title, String body) {
 
 
     }
+
+    @Transactional
+    public void deleteAllFcmToken(User user) {
+        fcmTokenRepository.deleteAllByUser(user);
+    }
 }