[NO_JIRA] 멤버 수 확인 API 추가 (#200)

* feat : 멤버 수 API 추가

* feat : 멤버가 존재하지 않을 경우 Exception 추가

* feat : 멤버 수 API 화이트 리스트 추가

* refactor : 복수 표현으로 변경

application/src/main/java/org/depromeet/spot/application/common/jwt/JwtAuthenticationFilter.java

@@ -60,6 +60,8 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
                     "/api/v2/GOOGLE",
                     Set.of("GET"),
                     "/api/v2/KAKAO",
+                    Set.of("GET"),
+                    "/api/v1/admin/memberCount",
                     Set.of("GET"));
 
     @Override

application/src/main/java/org/depromeet/spot/application/member/controller/MemberController.java

@@ -117,4 +117,11 @@ public MyHomeResponse findMemberHomeFeed(@Parameter(hidden = true) Long memberId
     public void softDelete(@Parameter(hidden = true) Long memberId) {
         memberUsecase.softDelete(memberId);
     }
+
+    @GetMapping("/admin/membersCount")
+    @ResponseStatus(HttpStatus.OK)
+    @Operation(summary = "(admin) 가입 멤버 수 조회 API")
+    public int membersCount() {
+        return memberUsecase.membersCount();
+    }
 }

common/src/main/java/org/depromeet/spot/common/exception/member/MemberErrorCode.java

@@ -12,7 +12,7 @@ public enum MemberErrorCode implements ErrorCode {
     INVALID_LEVEL(HttpStatus.INTERNAL_SERVER_ERROR, "M003", "잘못된 레벨입니다."),
     INACTIVE_MEMBER(HttpStatus.GONE, "M004", "탈퇴한 유저입니다."),
     MEMBER_CONFLICT(HttpStatus.BAD_REQUEST, "M005", "이미 가입된 유저입니다."),
-    ;
+    MEMBERS_NOT_EXIST(HttpStatus.NOT_FOUND, "M006", "가입한 유저가 없습니다.");
 
     private final HttpStatus status;
     private final String code;

common/src/main/java/org/depromeet/spot/common/exception/member/MemberException.java

@@ -24,6 +24,16 @@ public MemberNicknameConflictException() {
         }
     }
 
+    public static class MembersNotExistException extends MemberException {
+        public MembersNotExistException() {
+            super(MemberErrorCode.MEMBERS_NOT_EXIST);
+        }
+
+        public MembersNotExistException(Object o) {
+            super(MemberErrorCode.MEMBERS_NOT_EXIST.appended(o));
+        }
+    }
+
     public static class InvalidLevelException extends MemberException {
         public InvalidLevelException() {
             super(MemberErrorCode.INVALID_LEVEL);

infrastructure/src/main/java/org/depromeet/spot/infrastructure/jpa/member/repository/MemberJpaRepository.java

@@ -43,4 +43,7 @@ void updateDeletedAt(
             "update MemberEntity m set m.deletedAt = null, m.updatedAt = :updatedAt where m.id = :memberId")
     void updateDeletedAtAndUpdatedAt(
             @Param("memberId") Long memberId, @Param("updatedAt") LocalDateTime updatedAt);
+
+    @Query("select count(*) from MemberEntity m")
+    Optional<Integer> findMemberCount();
 }

infrastructure/src/main/java/org/depromeet/spot/infrastructure/jpa/member/repository/MemberRepositoryImpl.java

@@ -4,6 +4,7 @@
 import java.util.Optional;
 
 import org.depromeet.spot.common.exception.member.MemberException.MemberNotFoundException;
+import org.depromeet.spot.common.exception.member.MemberException.MembersNotExistException;
 import org.depromeet.spot.domain.member.Level;
 import org.depromeet.spot.domain.member.Member;
 import org.depromeet.spot.infrastructure.jpa.member.entity.MemberEntity;
@@ -70,4 +71,9 @@ public void updateDeletedAt(Long memberId, LocalDateTime deletedAt) {
     public void updateDeletedAtAndUpdatedAt(Long memberId, LocalDateTime updatedAt) {
         memberJpaRepository.updateDeletedAtAndUpdatedAt(memberId, updatedAt);
     }
+
+    @Override
+    public int membersCount() {
+        return memberJpaRepository.findMemberCount().orElseThrow(MembersNotExistException::new);
+    }
 }

usecase/src/main/java/org/depromeet/spot/usecase/port/in/member/MemberUsecase.java

@@ -23,6 +23,8 @@ public interface MemberUsecase {
 
     void softDelete(Long memberId);
 
+    int membersCount();
+
     @Getter
     @Builder
     @AllArgsConstructor

usecase/src/main/java/org/depromeet/spot/usecase/port/out/member/MemberRepository.java

@@ -25,4 +25,6 @@ public interface MemberRepository {
     void updateDeletedAt(Long memberId, LocalDateTime deletedAt);
 
     void updateDeletedAtAndUpdatedAt(Long memberId, LocalDateTime updatedAt);
+
+    int membersCount();
 }

usecase/src/main/java/org/depromeet/spot/usecase/service/member/MemberService.java

@@ -117,4 +117,9 @@ public void softDelete(Long memberId) {
 
         memberRepository.updateDeletedAt(memberId, LocalDateTime.now());
     }
+
+    @Override
+    public int membersCount() {
+        return memberRepository.membersCount();
+    }
 }