Merge pull request #92 from UMC-7th-A1Grade/refactor/temp

Author: MeongW

src/main/java/com/umc7th/a1grade/domain/question/exception/status/QuestionErrorStatus.java

@@ -20,6 +20,7 @@ public enum QuestionErrorStatus implements BaseErrorCode {
   INVALID_QUESTION_TYPE(HttpStatus.BAD_REQUEST, "QUESTION4009", "유효하지 않은 문제 타입입니다."),
   NO_QUESTIONS_FOUND(HttpStatus.NOT_FOUND, "QUESTION4010", "조건에 맞는 문제가 없습니다."),
   QUESTIONLOG_NOT_FOUND(HttpStatus.NOT_FOUND, "QUESTION4009", "문제 로그가 존재하지 않습니다."),
+  DUPLICATE_QUESTIONS(HttpStatus.BAD_REQUEST, "QUESTION4091", "이미 저장된 문제입니다."),
 
   QUESTION_DATABASE_ERROR(
       HttpStatus.INTERNAL_SERVER_ERROR, "QUESTION5000", "문제 조회 중 데이터베이스 오류가 발생하였습니다.");

src/main/java/com/umc7th/a1grade/domain/question/repository/QuestionRepository.java

@@ -55,4 +55,6 @@ ORDER BY RAND()
   // ID 값만 rand()함수를 적용하여 쿼리 최적화 진행
   // TIMESTAMPDIFF 대신에 INTERVAL을 사용하여 가독성 개선
   List<Question> findQuestionsByUserAndType(@Param("userId") Long userId);
+
+  Optional<Question> findByImageUrlAndMemo(String imageUrl, String memo);
 }

src/main/java/com/umc7th/a1grade/domain/question/repository/UserQuestionRepository.java

@@ -51,4 +51,6 @@ List<UserQuestion> findByUserIdAndOld(
           + "WHERE uq.id = :userQuestionId "
           + "ORDER BY ql.submissionTime DESC")
   Optional<UserQuestion> findUserQuestion(@Param("userQuestionId") Long userQuestionId);
+
+  boolean existsByUserIdAndQuestionImageUrl(Long userId, String imageUrl);
 }

src/main/java/com/umc7th/a1grade/domain/question/service/QuestionServiceImpl.java

@@ -153,14 +153,14 @@ public QuestionResponseDTO.SaveUserQuestionDTO saveQuestion(
       throw new GeneralException(QuestionErrorStatus.INVALID_QUESTION_TYPE);
     }
 
-    Question question = QuestionConverter.toQuestion(requestSaveQuestionDTO);
-
-    try {
-      questionRepository.save(question);
-    } catch (DataAccessException e) {
-      throw new GeneralException(QuestionErrorStatus.QUESTION_DATABASE_ERROR);
+    if (userQuestionRepository.existsByUserIdAndQuestionImageUrl(
+        user.getId(), requestSaveQuestionDTO.getImageUrl())) {
+      throw new GeneralException(QuestionErrorStatus.DUPLICATE_QUESTIONS);
     }
 
+    Question question =
+        questionRepository.save(QuestionConverter.toQuestion(requestSaveQuestionDTO));
+
     UserQuestion userQuestion =
         UserQuestion.builder()
             .user(user)