feat: 멘토링 신규 신청 건수 조회 구현

Author: whqtker

src/main/java/com/example/solidconnection/mentor/controller/MentoringController.java

@@ -6,6 +6,7 @@
 import com.example.solidconnection.mentor.dto.MentoringCheckResponse;
 import com.example.solidconnection.mentor.dto.MentoringConfirmRequest;
 import com.example.solidconnection.mentor.dto.MentoringConfirmResponse;
+import com.example.solidconnection.mentor.dto.MentoringCountResponse;
 import com.example.solidconnection.mentor.dto.MentoringResponse;
 import com.example.solidconnection.mentor.service.MentoringCommandService;
 import com.example.solidconnection.mentor.service.MentoringQueryService;
@@ -70,4 +71,12 @@ public ResponseEntity<MentoringCheckResponse> checkMentoring(
         MentoringCheckResponse response = mentoringCommandService.checkMentoring(siteUser.getId(), mentoringId);
         return ResponseEntity.ok(response);
     }
+
+    @GetMapping("/check")
+    public ResponseEntity<MentoringCountResponse> getNewMentoringsCount(
+            @AuthorizedUser SiteUser siteUser
+    ) {
+        MentoringCountResponse responses = mentoringQueryService.getNewMentoringsCount(siteUser.getId());
+        return ResponseEntity.ok(responses);
+    }
 }

src/main/java/com/example/solidconnection/mentor/dto/MentoringCountResponse.java

@@ -0,0 +1,10 @@
+package com.example.solidconnection.mentor.dto;
+
+public record MentoringCountResponse(
+        int mentoringCount
+) {
+
+    public static MentoringCountResponse from(int mentoringCount) {
+        return new MentoringCountResponse(mentoringCount);
+    }
+}

src/main/java/com/example/solidconnection/mentor/repository/MentoringRepository.java

@@ -8,4 +8,5 @@
 public interface MentoringRepository extends JpaRepository<Mentoring, Long> {
 
     List<Mentoring> findAllByMentorId(Long mentorId);
+    int countByMentorIdAndCheckedAtIsNull(Long mentorId);
 }

src/main/java/com/example/solidconnection/mentor/service/MentoringQueryService.java

@@ -3,6 +3,7 @@
 import com.example.solidconnection.common.exception.CustomException;
 import com.example.solidconnection.mentor.domain.Mentor;
 import com.example.solidconnection.mentor.domain.Mentoring;
+import com.example.solidconnection.mentor.dto.MentoringCountResponse;
 import com.example.solidconnection.mentor.dto.MentoringResponse;
 import com.example.solidconnection.mentor.repository.MentorRepository;
 import com.example.solidconnection.mentor.repository.MentoringRepository;
@@ -33,4 +34,14 @@ public List<MentoringResponse> getMentorings(Long siteUserId) {
                 .map(MentoringResponse::from)
                 .collect(Collectors.toList());
     }
+
+    @Transactional(readOnly = true)
+    public MentoringCountResponse getNewMentoringsCount(Long siteUserId) {
+        Mentor mentor = mentorRepository.findBySiteUserId(siteUserId)
+                .orElseThrow(() -> new CustomException(MENTOR_NOT_FOUND));
+
+        int count = mentoringRepository.countByMentorIdAndCheckedAtIsNull(mentor.getId());
+
+        return MentoringCountResponse.from(count);
+    }
 }