feat: 어드민 멤버 조회하기 API 구현

src/main/java/com/gdschongik/gdsc/domain/member/api/AdminMemberController.java

@@ -0,0 +1,30 @@
+package com.gdschongik.gdsc.domain.member.api;
+
+import com.gdschongik.gdsc.domain.member.application.MemberService;
+import com.gdschongik.gdsc.domain.member.dto.response.AdminMemberFindAllResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/admin/members")
+@RequiredArgsConstructor
+public class AdminMemberController {
+
+    private final MemberService memberService;
+
+    @GetMapping
+    public ResponseEntity<Page<AdminMemberFindAllResponse>> getMembers(
+            @RequestParam(value = "keyword", required = false) String keyword,
+            @RequestParam(value = "type", required = false) String type,
+            Pageable pageable) {
+
+        Page<AdminMemberFindAllResponse> response = memberService.findAll(keyword, type, pageable);
+        return ResponseEntity.ok().body(response);
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/member/application/MemberService.java

@@ -0,0 +1,21 @@
+package com.gdschongik.gdsc.domain.member.application;
+
+import com.gdschongik.gdsc.domain.member.dao.MemberRepository;
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.domain.member.dto.response.AdminMemberFindAllResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class MemberService {
+
+    private final MemberRepository memberRepository;
+
+    public Page<AdminMemberFindAllResponse> findAll(String keyword, String type, Pageable pageable) {
+        Page<Member> members = memberRepository.findAll(keyword, type, pageable);
+        return members.map(AdminMemberFindAllResponse::of);
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/member/dao/MemberCustomRepository.java

@@ -0,0 +1,9 @@
+package com.gdschongik.gdsc.domain.member.dao;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface MemberCustomRepository {
+    Page<Member> findAll(String keyword, String type, Pageable pageable);
+}

src/main/java/com/gdschongik/gdsc/domain/member/dao/MemberCustomRepositoryImpl.java

@@ -0,0 +1,53 @@
+package com.gdschongik.gdsc.domain.member.dao;
+
+import static com.gdschongik.gdsc.domain.member.domain.QMember.*;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+import com.gdschongik.gdsc.global.exception.CustomException;
+import com.gdschongik.gdsc.global.exception.ErrorCode;
+import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.jpa.impl.JPAQuery;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.support.PageableExecutionUtils;
+
+@RequiredArgsConstructor
+public class MemberCustomRepositoryImpl implements MemberCustomRepository {
+
+    private final JPAQueryFactory queryFactory;
+
+    @Override
+    public Page<Member> findAll(String keyword, String type, Pageable pageable) {
+        List<Member> fetch = queryFactory
+                .selectFrom(member)
+                .where(queryOption(keyword, type))
+                .offset(pageable.getOffset())
+                .limit(pageable.getPageSize())
+                .fetch();
+
+        JPAQuery<Long> countQuery =
+                queryFactory.select(member.count()).from(member).where(queryOption(keyword, type));
+
+        return PageableExecutionUtils.getPage(fetch, pageable, countQuery::fetchOne);
+    }
+
+    private BooleanExpression queryOption(String keyword, String type) {
+        if (keyword != null && type != null) {
+            return switch (type) {
+                case "student-id" -> member.studentId.containsIgnoreCase(keyword);
+                case "name" -> member.name.containsIgnoreCase(keyword);
+                case "phone" -> member.phone.containsIgnoreCase(keyword);
+                case "department" -> member.department.containsIgnoreCase(keyword);
+                case "email" -> member.email.containsIgnoreCase(keyword);
+                case "discord-username" -> member.discordUsername.containsIgnoreCase(keyword);
+                case "discord-nickname" -> member.nickname.containsIgnoreCase(keyword);
+                default -> throw new CustomException(ErrorCode.INVALID_QUERY_PARAMETER);
+            };
+        }
+
+        return null;
+    }
+}

src/main/java/com/gdschongik/gdsc/domain/member/dao/MemberRepository.java

@@ -4,7 +4,7 @@
 import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface MemberRepository extends JpaRepository<Member, Long> {
+public interface MemberRepository extends JpaRepository<Member, Long>, MemberCustomRepository {
 
     Optional<Member> findByOauthId(String oauthId);
 }

src/main/java/com/gdschongik/gdsc/domain/member/dto/response/AdminMemberFindAllResponse.java

@@ -0,0 +1,26 @@
+package com.gdschongik.gdsc.domain.member.dto.response;
+
+import com.gdschongik.gdsc.domain.member.domain.Member;
+
+public record AdminMemberFindAllResponse(
+        Long memberId,
+        String studentId,
+        String name,
+        String phone,
+        String department,
+        String email,
+        String discordUsername,
+        String nickname) {
+
+    public static AdminMemberFindAllResponse of(Member member) {
+        return new AdminMemberFindAllResponse(
+                member.getId(),
+                member.getStudentId(),
+                member.getName(),
+                member.getPhone(),
+                member.getDepartment(),
+                member.getEmail(),
+                member.getDiscordUsername(),
+                member.getNickname());
+    }
+}

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

@@ -11,7 +11,10 @@ public enum ErrorCode {
 
     // Jwt
     INVALID_JWT_TOKEN(HttpStatus.UNAUTHORIZED, "유효하지 않은 JWT 토큰입니다."),
-    EXPIRED_JWT_TOKEN(HttpStatus.UNAUTHORIZED, "만료된 JWT 토큰입니다.");
+    EXPIRED_JWT_TOKEN(HttpStatus.UNAUTHORIZED, "만료된 JWT 토큰입니다."),
+
+    // Parameter
+    INVALID_QUERY_PARAMETER(HttpStatus.BAD_REQUEST, "잘못된 쿼리 파라미터입니다.");
 
     private final HttpStatus status;
     private final String message;

src/test/java/com/gdschongik/gdsc/domain/member/dao/MemberRepositoryTest.java

@@ -0,0 +1,29 @@
+package com.gdschongik.gdsc.domain.member.dao;
+
+import static org.assertj.core.api.Assertions.*;
+
+import com.gdschongik.gdsc.config.TestQuerydslConfig;
+import com.gdschongik.gdsc.global.exception.CustomException;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.data.domain.Pageable;
+
+@DataJpaTest
+@Import(TestQuerydslConfig.class)
+class MemberRepositoryTest {
+
+    @Autowired
+    private MemberRepository memberRepository;
+
+    @Test
+    void 유효하지_않은_type이면_예외_발생() {
+        // given
+        Pageable pageable = Pageable.ofSize(20);
+
+        // when, then
+        assertThatThrownBy(() -> memberRepository.findAll("keyword", "invalid type", pageable))
+                .isInstanceOf(CustomException.class);
+    }
+}