feat: 레포지토리 입력 API 추가

src/main/java/com/gdschongik/gdsc/domain/study/api/StudentStudyHistoryController.java

@@ -0,0 +1,31 @@
+package com.gdschongik.gdsc.domain.study.api;
+
+import com.gdschongik.gdsc.domain.study.application.StudyHistoryService;
+import com.gdschongik.gdsc.domain.study.dto.request.RepositoryUpdateRequest;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@Tag(name = "Student Study History", description = "사용자 스터디 수강 이력 API입니다.")
+@RestController
+@RequestMapping("/study-history")
+@RequiredArgsConstructor
+public class StudentStudyHistoryController {
+
+    private final StudyHistoryService studyHistoryService;
+
+    @Operation(summary = "레포지토리 입력", description = "레포지토리를 입력합니다. 이미 제출한 과제가 있다면 수정할 수 없습니다.")
+    @PutMapping("/{studyHistoryId}/repository")
+    public ResponseEntity<Void> updateRepository(
+            @PathVariable Long studyHistoryId, @Valid @RequestBody RepositoryUpdateRequest request) {
+        studyHistoryService.updateRepository(studyHistoryId, request);
+        return ResponseEntity.ok().build();
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/study/application/StudyHistoryService.java

@@ -0,0 +1,60 @@
+package com.gdschongik.gdsc.domain.study.application;
+
+import static com.gdschongik.gdsc.global.common.constant.GithubConstant.*;
+import static com.gdschongik.gdsc.global.exception.ErrorCode.*;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.study.dao.AssignmentHistoryRepository;
+import com.gdschongik.gdsc.domain.study.dao.StudyHistoryRepository;
+import com.gdschongik.gdsc.domain.study.domain.Study;
+import com.gdschongik.gdsc.domain.study.domain.StudyHistory;
+import com.gdschongik.gdsc.domain.study.domain.StudyHistoryValidator;
+import com.gdschongik.gdsc.domain.study.dto.request.RepositoryUpdateRequest;
+import com.gdschongik.gdsc.global.exception.CustomException;
+import com.gdschongik.gdsc.global.util.MemberUtil;
+import com.gdschongik.gdsc.infra.client.github.GithubClient;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class StudyHistoryService {
+
+    private final MemberUtil memberUtil;
+    private final GithubClient githubClient;
+    private final StudyHistoryRepository studyHistoryRepository;
+    private final AssignmentHistoryRepository assignmentHistoryRepository;
+    private final StudyHistoryValidator studyHistoryValidator;
+
+    @Transactional
+    public void updateRepository(Long studyHistoryId, RepositoryUpdateRequest request) {
+        Member currentMember = memberUtil.getCurrentMember();
+        StudyHistory studyHistory = studyHistoryRepository
+                .findById(studyHistoryId)
+                .orElseThrow(() -> new CustomException(STUDY_HISTORY_NOT_FOUND));
+        Study study = studyHistory.getStudy();
+
+        boolean isAnyAssignmentSubmitted =
+                assignmentHistoryRepository.existsSubmittedAssignmentByMemberAndStudy(currentMember, study);
+        studyHistoryValidator.validateUpdateRepository(isAnyAssignmentSubmitted);
+        validateRepositoryLink(request.repositoryLink());
+
+        studyHistory.updateRepositoryLink(request.repositoryLink());
+        studyHistoryRepository.save(studyHistory);
+
+        log.info("[StudyHistoryService] 레포지토리 입력: studyHistoryId={}", studyHistory.getId());
+    }
+
+    private void validateRepositoryLink(String repositoryLink) {
+        String ownerRepo = getOwnerRepo(repositoryLink);
+        githubClient.getRepository(ownerRepo);
+    }
+
+    private String getOwnerRepo(String repositoryLink) {
+        int startIndex = repositoryLink.indexOf(GITHUB_DOMAIN) + GITHUB_DOMAIN.length();
+        return repositoryLink.substring(startIndex);
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/study/application/StudyService.java

@@ -1,5 +1,6 @@
 package com.gdschongik.gdsc.domain.study.application;
 
+import static com.gdschongik.gdsc.global.common.constant.GithubConstant.*;
 import static com.gdschongik.gdsc.global.exception.ErrorCode.*;
 
 import com.gdschongik.gdsc.domain.member.domain.Member;

src/main/java/com/gdschongik/gdsc/domain/study/dao/AssignmentHistoryCustomRepository.java

@@ -0,0 +1,9 @@
+package com.gdschongik.gdsc.domain.study.dao;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.study.domain.Study;
+
+public interface AssignmentHistoryCustomRepository {
+
+    boolean existsSubmittedAssignmentByMemberAndStudy(Member member, Study study);
+}

src/main/java/com/gdschongik/gdsc/domain/study/dao/AssignmentHistoryCustomRepositoryImpl.java

@@ -0,0 +1,39 @@
+package com.gdschongik.gdsc.domain.study.dao;
+
+import static com.gdschongik.gdsc.domain.study.domain.AssignmentSubmissionStatus.*;
+import static com.gdschongik.gdsc.domain.study.domain.QAssignmentHistory.*;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.study.domain.Study;
+import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public class AssignmentHistoryCustomRepositoryImpl implements AssignmentHistoryCustomRepository {
+
+    private final JPAQueryFactory queryFactory;
+
+    @Override
+    public boolean existsSubmittedAssignmentByMemberAndStudy(Member member, Study study) {
+        Integer fetchOne = queryFactory
+                .selectOne()
+                .from(assignmentHistory)
+                .where(eqMember(member), eqStudy(study), isSubmitted())
+                .fetchFirst();
+
+        return fetchOne != null;
+    }
+
+    private BooleanExpression eqMember(Member member) {
+        return member == null ? null : assignmentHistory.member.eq(member);
+    }
+
+    private BooleanExpression eqStudy(Study study) {
+        return study == null ? null : assignmentHistory.studyDetail.study.eq(study);
+    }
+
+    private BooleanExpression isSubmitted() {
+        return assignmentHistory.submissionStatus.in(FAILURE, SUCCESS);
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/study/dao/AssignmentHistoryRepository.java

@@ -0,0 +1,7 @@
+package com.gdschongik.gdsc.domain.study.dao;
+
+import com.gdschongik.gdsc.domain.study.domain.AssignmentHistory;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface AssignmentHistoryRepository
+        extends JpaRepository<AssignmentHistory, Long>, AssignmentHistoryCustomRepository {}

src/main/java/com/gdschongik/gdsc/domain/study/domain/StudyHistory.java

@@ -33,6 +33,8 @@ public class StudyHistory extends BaseEntity {
     @JoinColumn(name = "study_id")
     private Study study;
 
+    private String repositoryLink;
+
     @Builder(access = AccessLevel.PRIVATE)
     private StudyHistory(Member mentee, Study study) {
         this.mentee = mentee;
@@ -43,6 +45,13 @@ public static StudyHistory create(Member mentee, Study study) {
         return StudyHistory.builder().mentee(mentee).study(study).build();
     }
 
+    /**
+     * 레포지토리 링크를 업데이트합니다.
+     */
+    public void updateRepositoryLink(String repositoryLink) {
+        this.repositoryLink = repositoryLink;
+    }
+
     // 데이터 전달 로직
     public boolean isStudyOngoing() {
         return study.isStudyOngoing();

src/main/java/com/gdschongik/gdsc/domain/study/domain/StudyHistoryValidator.java

@@ -37,4 +37,11 @@ public void validateCancelStudyApply(Study study) {
             throw new CustomException(STUDY_NOT_CANCELABLE_APPLICATION_PERIOD);
         }
     }
+
+    public void validateUpdateRepository(boolean isAnyAssignmentSubmitted) {
+        // 이미 제출한 과제가 있는 경우
+        if (isAnyAssignmentSubmitted) {
+            throw new CustomException(STUDY_HISTORY_REPOSITORY_NOT_UPDATABLE);
+        }
+    }
 }

src/main/java/com/gdschongik/gdsc/domain/study/dto/request/RepositoryUpdateRequest.java

@@ -0,0 +1,5 @@
+package com.gdschongik.gdsc.domain.study.dto.request;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record RepositoryUpdateRequest(@NotBlank String repositoryLink) {}

src/main/java/com/gdschongik/gdsc/global/common/constant/GithubConstant.java

@@ -0,0 +1,8 @@
+package com.gdschongik.gdsc.global.common.constant;
+
+public class GithubConstant {
+
+    public static final String GITHUB_DOMAIN = "github.com/";
+
+    private GithubConstant() {}
+}

src/main/java/com/gdschongik/gdsc/global/exception/ErrorCode.java

@@ -117,6 +117,7 @@ public enum ErrorCode {
     STUDY_HISTORY_NOT_FOUND(HttpStatus.NOT_FOUND, "존재하지 않는 스터디 수강 기록입니다."),
     STUDY_HISTORY_DUPLICATE(HttpStatus.CONFLICT, "이미 해당 스터디를 신청했습니다."),
     STUDY_HISTORY_ONGOING_ALREADY_EXISTS(HttpStatus.CONFLICT, "이미 진행중인 스터디가 있습니다."),
+    STUDY_HISTORY_REPOSITORY_NOT_UPDATABLE(HttpStatus.CONFLICT, "이미 제출한 과제가 있으므로 레포지토리를 수정할 수 없습니다."),
 
     // Order
     ORDER_NOT_FOUND(HttpStatus.NOT_FOUND, "주문이 존재하지 않습니다."),
@@ -142,7 +143,10 @@ public enum ErrorCode {
 
     // Assignment
     ASSIGNMENT_CAN_NOT_BE_UPDATED(HttpStatus.CONFLICT, "휴강인 과제는 수정할 수 없습니다."),
-    ASSIGNMENT_DEADLINE_INVALID(HttpStatus.CONFLICT, "과제 마감 기한이 현재보다 빠릅니다.");
+    ASSIGNMENT_DEADLINE_INVALID(HttpStatus.CONFLICT, "과제 마감 기한이 현재보다 빠릅니다."),
+
+    // Github
+    GITHUB_REPOSITORY_NOT_FOUND(HttpStatus.NOT_FOUND, "존재하지 않는 레포지토리입니다.");
 
     private final HttpStatus status;
     private final String message;

src/main/java/com/gdschongik/gdsc/infra/client/github/GithubClient.java

@@ -1,6 +1,10 @@
 package com.gdschongik.gdsc.infra.client.github;
 
+import com.gdschongik.gdsc.global.exception.CustomException;
+import com.gdschongik.gdsc.global.exception.ErrorCode;
+import java.io.IOException;
 import lombok.RequiredArgsConstructor;
+import org.kohsuke.github.GHRepository;
 import org.kohsuke.github.GitHub;
 import org.springframework.stereotype.Component;
 
@@ -9,4 +13,12 @@
 public class GithubClient {
 
     private final GitHub github;
+
+    public GHRepository getRepository(String ownerRepo) {
+        try {
+            return github.getRepository(ownerRepo);
+        } catch (IOException e) {
+            throw new CustomException(ErrorCode.GITHUB_REPOSITORY_NOT_FOUND);
+        }
+    }
 }

src/test/java/com/gdschongik/gdsc/domain/study/domain/StudyHistoryValidatorTest.java

@@ -96,4 +96,19 @@ class 스터디_수강신청_취소시 {
                     .hasMessage(STUDY_NOT_CANCELABLE_APPLICATION_PERIOD.getMessage());
         }
     }
+
+    @Nested
+    class 레포지토리_입력시 {
+
+        @Test
+        void 이미_제출한_과제가_있다면_실패한다() {
+            // given
+            boolean isAnyAssignmentSubmitted = true;
+
+            // when & then
+            assertThatThrownBy(() -> studyHistoryValidator.validateUpdateRepository(isAnyAssignmentSubmitted))
+                    .isInstanceOf(CustomException.class)
+                    .hasMessage(STUDY_HISTORY_REPOSITORY_NOT_UPDATABLE.getMessage());
+        }
+    }
 }