feat: 중복 닉네임 검증 api 추가

src/main/java/com/example/solidconnection/custom/exception/ErrorCode.java

@@ -5,7 +5,7 @@
 import org.springframework.http.HttpStatus;
 
 import static com.example.solidconnection.application.service.ApplicationSubmissionService.APPLICATION_UPDATE_COUNT_LIMIT;
-import static com.example.solidconnection.siteuser.service.SiteUserService.MIN_DAYS_BETWEEN_NICKNAME_CHANGES;
+import static com.example.solidconnection.siteuser.service.MyPageService.MIN_DAYS_BETWEEN_NICKNAME_CHANGES;
 
 @Getter
 @AllArgsConstructor

src/main/java/com/example/solidconnection/siteuser/controller/MyPageController.java

@@ -0,0 +1,40 @@
+package com.example.solidconnection.siteuser.controller;
+
+import com.example.solidconnection.custom.resolver.AuthorizedUser;
+import com.example.solidconnection.siteuser.domain.SiteUser;
+import com.example.solidconnection.siteuser.dto.MyPageResponse;
+import com.example.solidconnection.siteuser.service.MyPageService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+@RequiredArgsConstructor
+@RequestMapping("/my")
+@RestController
+class MyPageController {
+
+    private final MyPageService myPageService;
+
+    @GetMapping
+    public ResponseEntity<MyPageResponse> getMyPageInfo(
+            @AuthorizedUser SiteUser siteUser
+    ) {
+        MyPageResponse myPageResponse = myPageService.getMyPageInfo(siteUser);
+        return ResponseEntity.ok(myPageResponse);
+    }
+
+    @PatchMapping
+    public ResponseEntity<Void> updateMyPageInfo(
+            @AuthorizedUser SiteUser siteUser,
+            @RequestParam("file") MultipartFile imageFile,
+            @RequestParam("nickname") String nickname
+    ) {
+        myPageService.updateMyPageInfo(siteUser, imageFile, nickname);
+        return ResponseEntity.ok().build();
+    }
+}

src/main/java/com/example/solidconnection/siteuser/controller/SiteUserController.java

@@ -1,40 +1,26 @@
 package com.example.solidconnection.siteuser.controller;
 
-import com.example.solidconnection.custom.resolver.AuthorizedUser;
-import com.example.solidconnection.siteuser.domain.SiteUser;
-import com.example.solidconnection.siteuser.dto.MyPageResponse;
+import com.example.solidconnection.siteuser.dto.NicknameExistsResponse;
 import com.example.solidconnection.siteuser.service.SiteUserService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PatchMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.multipart.MultipartFile;
 
 @RequiredArgsConstructor
-@RequestMapping("/my")
+@RequestMapping("/users")
 @RestController
-class SiteUserController {
+public class SiteUserController {
 
     private final SiteUserService siteUserService;
 
-    @GetMapping
-    public ResponseEntity<MyPageResponse> getMyPageInfo(
-            @AuthorizedUser SiteUser siteUser
+    @GetMapping("/exists")
+    public ResponseEntity<NicknameExistsResponse> checkNicknameExists(
+            @RequestParam("nickname") String nickname
     ) {
-        MyPageResponse myPageResponse = siteUserService.getMyPageInfo(siteUser);
-        return ResponseEntity.ok(myPageResponse);
-    }
-
-    @PatchMapping
-    public ResponseEntity<Void> updateMyPageInfo(
-            @AuthorizedUser SiteUser siteUser,
-            @RequestParam(value = "file", required = false) MultipartFile imageFile,
-            @RequestParam(value = "nickname", required = false) String nickname
-    ) {
-        siteUserService.updateMyPageInfo(siteUser, imageFile, nickname);
-        return ResponseEntity.ok().build();
+        NicknameExistsResponse nicknameExistsResponse = siteUserService.checkNicknameExists(nickname);
+        return ResponseEntity.ok(nicknameExistsResponse);
     }
 }

src/main/java/com/example/solidconnection/siteuser/dto/NicknameExistsResponse.java

@@ -0,0 +1,9 @@
+package com.example.solidconnection.siteuser.dto;
+
+public record NicknameExistsResponse(
+        boolean exists
+) {
+    public static NicknameExistsResponse from(boolean exists) {
+        return new NicknameExistsResponse(exists);
+    }
+}

src/main/java/com/example/solidconnection/siteuser/service/MyPageService.java

@@ -0,0 +1,105 @@
+package com.example.solidconnection.siteuser.service;
+
+import com.example.solidconnection.custom.exception.CustomException;
+import com.example.solidconnection.s3.S3Service;
+import com.example.solidconnection.s3.UploadedFileUrlResponse;
+import com.example.solidconnection.siteuser.domain.SiteUser;
+import com.example.solidconnection.siteuser.dto.MyPageResponse;
+import com.example.solidconnection.siteuser.repository.LikedUniversityRepository;
+import com.example.solidconnection.siteuser.repository.SiteUserRepository;
+import com.example.solidconnection.type.ImgType;
+import com.example.solidconnection.university.domain.LikedUniversity;
+import com.example.solidconnection.university.dto.UniversityInfoForApplyPreviewResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+
+import static com.example.solidconnection.custom.exception.ErrorCode.CAN_NOT_CHANGE_NICKNAME_YET;
+import static com.example.solidconnection.custom.exception.ErrorCode.NICKNAME_ALREADY_EXISTED;
+import static com.example.solidconnection.custom.exception.ErrorCode.PROFILE_IMAGE_NEEDED;
+
+@RequiredArgsConstructor
+@Service
+public class MyPageService {
+
+    public static final int MIN_DAYS_BETWEEN_NICKNAME_CHANGES = 7;
+    public static final DateTimeFormatter NICKNAME_LAST_CHANGE_DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+
+    private final SiteUserRepository siteUserRepository;
+    private final LikedUniversityRepository likedUniversityRepository;
+    private final S3Service s3Service;
+
+    /*
+     * 마이페이지 정보를 조회한다.
+     * */
+    @Transactional(readOnly = true)
+    public MyPageResponse getMyPageInfo(SiteUser siteUser) {
+        int likedUniversityCount = likedUniversityRepository.countBySiteUser_Id(siteUser.getId());
+        return MyPageResponse.of(siteUser, likedUniversityCount);
+    }
+
+    /*
+     * 마이페이지 정보를 수정한다.
+     * */
+    @Transactional
+    public void updateMyPageInfo(SiteUser siteUser, MultipartFile imageFile, String nickname) {
+        validateNicknameUnique(nickname);
+        validateNicknameNotChangedRecently(siteUser.getNicknameModifiedAt());
+        validateProfileImageNotEmpty(imageFile);
+
+        if (!isDefaultProfileImage(siteUser.getProfileImageUrl())) {
+            s3Service.deleteExProfile(siteUser);
+        }
+        UploadedFileUrlResponse uploadedFile = s3Service.uploadFile(imageFile, ImgType.PROFILE);
+        String profileImageUrl = uploadedFile.fileUrl();
+
+        siteUser.setProfileImageUrl(profileImageUrl);
+        siteUser.setNickname(nickname);
+        siteUser.setNicknameModifiedAt(LocalDateTime.now());
+        siteUserRepository.save(siteUser);
+    }
+
+    private void validateNicknameUnique(String nickname) {
+        if (siteUserRepository.existsByNickname(nickname)) {
+            throw new CustomException(NICKNAME_ALREADY_EXISTED);
+        }
+    }
+
+    private void validateNicknameNotChangedRecently(LocalDateTime lastModifiedAt) {
+        if (lastModifiedAt == null) {
+            return;
+        }
+        if (LocalDateTime.now().isBefore(lastModifiedAt.plusDays(MIN_DAYS_BETWEEN_NICKNAME_CHANGES))) {
+            String formatLastModifiedAt
+                    = String.format("(마지막 수정 시간 : %s)", NICKNAME_LAST_CHANGE_DATE_FORMAT.format(lastModifiedAt));
+            throw new CustomException(CAN_NOT_CHANGE_NICKNAME_YET, formatLastModifiedAt);
+        }
+    }
+
+    private void validateProfileImageNotEmpty(MultipartFile imageFile) {
+        if (imageFile == null || imageFile.isEmpty()) {
+            throw new CustomException(PROFILE_IMAGE_NEEDED);
+        }
+    }
+
+    private boolean isDefaultProfileImage(String profileImageUrl) {
+        String prefix = "profile/";
+        return profileImageUrl == null || !profileImageUrl.startsWith(prefix);
+    }
+
+    /*
+     * 관심 대학교 목록을 조회한다.
+     * */
+    @Transactional(readOnly = true)
+    public List<UniversityInfoForApplyPreviewResponse> getWishUniversity(SiteUser siteUser) {
+        List<LikedUniversity> likedUniversities = likedUniversityRepository.findAllBySiteUser_Id(siteUser.getId());
+        return likedUniversities.stream()
+                .map(likedUniversity -> UniversityInfoForApplyPreviewResponse.from(likedUniversity.getUniversityInfoForApply()))
+                .toList();
+    }
+}

src/main/java/com/example/solidconnection/siteuser/service/SiteUserService.java

@@ -1,101 +1,18 @@
 package com.example.solidconnection.siteuser.service;
 
-import com.example.solidconnection.custom.exception.CustomException;
-import com.example.solidconnection.s3.S3Service;
-import com.example.solidconnection.s3.UploadedFileUrlResponse;
-import com.example.solidconnection.siteuser.domain.SiteUser;
-import com.example.solidconnection.siteuser.dto.MyPageResponse;
-import com.example.solidconnection.siteuser.repository.LikedUniversityRepository;
+import com.example.solidconnection.siteuser.dto.NicknameExistsResponse;
 import com.example.solidconnection.siteuser.repository.SiteUserRepository;
-import com.example.solidconnection.type.ImgType;
-import com.example.solidconnection.university.domain.LikedUniversity;
-import com.example.solidconnection.university.dto.UniversityInfoForApplyPreviewResponse;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-import org.springframework.web.multipart.MultipartFile;
-
-import java.time.LocalDateTime;
-import java.time.format.DateTimeFormatter;
-import java.util.List;
-
-import static com.example.solidconnection.custom.exception.ErrorCode.CAN_NOT_CHANGE_NICKNAME_YET;
-import static com.example.solidconnection.custom.exception.ErrorCode.NICKNAME_ALREADY_EXISTED;
-import static com.example.solidconnection.custom.exception.ErrorCode.PROFILE_IMAGE_NEEDED;
 
 @RequiredArgsConstructor
 @Service
 public class SiteUserService {
 
-    public static final int MIN_DAYS_BETWEEN_NICKNAME_CHANGES = 7;
-    public static final DateTimeFormatter NICKNAME_LAST_CHANGE_DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
-
     private final SiteUserRepository siteUserRepository;
-    private final LikedUniversityRepository likedUniversityRepository;
-    private final S3Service s3Service;
-
-    /*
-     * 마이페이지 정보를 조회한다.
-     * */
-    @Transactional(readOnly = true)
-    public MyPageResponse getMyPageInfo(SiteUser siteUser) {
-        int likedUniversityCount = likedUniversityRepository.countBySiteUser_Id(siteUser.getId());
-        return MyPageResponse.of(siteUser, likedUniversityCount);
-    }
-
-    /*
-     * 마이페이지 정보를 수정한다.
-     * */
-    @Transactional
-    public void updateMyPageInfo(SiteUser siteUser, MultipartFile imageFile, String nickname) {
-        if (nickname != null) {
-            validateNicknameUnique(nickname);
-            validateNicknameNotChangedRecently(siteUser.getNicknameModifiedAt());
-            siteUser.setNickname(nickname);
-            siteUser.setNicknameModifiedAt(LocalDateTime.now());
-        }
-
-        if (imageFile != null && !imageFile.isEmpty()) {
-            UploadedFileUrlResponse uploadedFile = s3Service.uploadFile(imageFile, ImgType.PROFILE);
-            if (!isDefaultProfileImage(siteUser.getProfileImageUrl())) {
-                s3Service.deleteExProfile(siteUser);
-            }
-            String profileImageUrl = uploadedFile.fileUrl();
-            siteUser.setProfileImageUrl(profileImageUrl);
-        }
-        siteUserRepository.save(siteUser);
-    }
-
-    private void validateNicknameUnique(String nickname) {
-        if (siteUserRepository.existsByNickname(nickname)) {
-            throw new CustomException(NICKNAME_ALREADY_EXISTED);
-        }
-    }
-
-    private void validateNicknameNotChangedRecently(LocalDateTime lastModifiedAt) {
-        if (lastModifiedAt == null) {
-            return;
-        }
-        if (LocalDateTime.now().isBefore(lastModifiedAt.plusDays(MIN_DAYS_BETWEEN_NICKNAME_CHANGES))) {
-            String formatLastModifiedAt
-                    = String.format("(마지막 수정 시간 : %s)", NICKNAME_LAST_CHANGE_DATE_FORMAT.format(lastModifiedAt));
-            throw new CustomException(CAN_NOT_CHANGE_NICKNAME_YET, formatLastModifiedAt);
-        }
-    }
-
-    private boolean isDefaultProfileImage(String profileImageUrl) {
-        String prefix = "profile/";
-        return profileImageUrl == null || !profileImageUrl.startsWith(prefix);
-    }
 
-    /*
-     * 관심 대학교 목록을 조회한다.
-     * */
-    @Transactional(readOnly = true)
-    public List<UniversityInfoForApplyPreviewResponse> getWishUniversity(SiteUser siteUser) {
-        List<LikedUniversity> likedUniversities = likedUniversityRepository.findAllBySiteUser_Id(siteUser.getId());
-        return likedUniversities.stream()
-                .map(likedUniversity -> UniversityInfoForApplyPreviewResponse.from(likedUniversity.getUniversityInfoForApply()))
-                .toList();
+    public NicknameExistsResponse checkNicknameExists(String nickname) {
+        boolean exists = siteUserRepository.existsByNickname(nickname);
+        return NicknameExistsResponse.from(exists);
     }
 }

src/main/java/com/example/solidconnection/university/controller/UniversityController.java

@@ -2,7 +2,7 @@
 
 import com.example.solidconnection.custom.resolver.AuthorizedUser;
 import com.example.solidconnection.siteuser.domain.SiteUser;
-import com.example.solidconnection.siteuser.service.SiteUserService;
+import com.example.solidconnection.siteuser.service.MyPageService;
 import com.example.solidconnection.type.LanguageTestType;
 import com.example.solidconnection.university.dto.IsLikeResponse;
 import com.example.solidconnection.university.dto.LikeResultResponse;
@@ -32,7 +32,7 @@ public class UniversityController {
     private final UniversityQueryService universityQueryService;
     private final UniversityLikeService universityLikeService;
     private final UniversityRecommendService universityRecommendService;
-    private final SiteUserService siteUserService;
+    private final MyPageService myPageService;
 
     @GetMapping("/recommend")
     public ResponseEntity<UniversityRecommendsResponse> getUniversityRecommends(
@@ -49,7 +49,7 @@ public ResponseEntity<UniversityRecommendsResponse> getUniversityRecommends(
     public ResponseEntity<List<UniversityInfoForApplyPreviewResponse>> getMyWishUniversity(
             @AuthorizedUser SiteUser siteUser
     ) {
-        List<UniversityInfoForApplyPreviewResponse> wishUniversities = siteUserService.getWishUniversity(siteUser);
+        List<UniversityInfoForApplyPreviewResponse> wishUniversities = myPageService.getWishUniversity(siteUser);
         return ResponseEntity.ok(wishUniversities);
     }