Feat : UserService 기능 추가 (#19)

- 푼 퀴즈 및 맟춘 퀴즈 업데이트 기능 추가
- findUserById 함수 추가

src/main/java/com/ripple/BE/user/domain/User.java

@@ -135,6 +135,12 @@ public class User extends BaseEntity {
     @Column(length = 100, unique = true, nullable = true)
     private String keyCode; // 카카오 로그인 시 발급되는 고유 코드
 
+    @Column(name = "quiz_count")
+    private int quizCount = 0; // 퀴즈 푼 횟수
+
+    @Column(name = "correct_count")
+    private int correctCount = 0; // 정답 횟수
+
     // 카카오 로그인 시 사용
     @Builder(builderMethodName = "kakaoBuilder", buildMethodName = "buildKakaoUser")
     public User(String keyCode, String accountEmail, String profileImageUrl, LoginType loginType) {
@@ -165,4 +171,12 @@ public void updateProfile(UpdateUserProfileRequest request) {
         this.isCoummunityAlarmAllowed = request.isCommunityAlarmAllowed();
         this.isProfileCompleted = true;
     }
+
+    public void increaseQuizCount(int count) {
+        this.quizCount += count;
+    }
+
+    public void increaseCorrectCount(int count) {
+        this.correctCount += count;
+    }
 }

src/main/java/com/ripple/BE/user/service/UserService.java

@@ -48,12 +48,24 @@ public void updateProfile(UpdateUserProfileRequest request, Long id) {
         user.updateProfile(request);
     }
 
+    @Transactional
+    public void updateQuizAndCorrectCount(User user, int quizCount, int correctCount) {
+        user.increaseQuizCount(quizCount);
+        user.increaseCorrectCount(correctCount);
+    }
+
+    @Transactional(readOnly = true)
     public User findUser(String accountEmail) {
         return userRepository
                 .findByAccountEmail(accountEmail)
                 .orElseThrow(() -> new UserException(USER_NOT_FOUND));
     }
 
+    @Transactional(readOnly = true)
+    public User findUserById(Long id) {
+        return userRepository.findById(id).orElseThrow(() -> new UserException(USER_NOT_FOUND));
+    }
+
     @Transactional
     public void createUser(String accountEmail, String password) {
         // 이미 존재하는 이메일인지 확인