Feature / admin / dashboard

src/main/java/redot/redot_server/domain/admin/controller/AdminDashboardController.java

@@ -0,0 +1,24 @@
+package redot.redot_server.domain.admin.controller;
+
+import lombok.RequiredArgsConstructor;
+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.RestController;
+import redot.redot_server.domain.admin.controller.docs.AdminDashboardControllerDocs;
+import redot.redot_server.domain.admin.dto.response.AdminDashboardStatsResponse;
+import redot.redot_server.domain.admin.service.AdminDashboardService;
+
+@RestController
+@RequestMapping("/api/v1/redot/admin/dashboard")
+@RequiredArgsConstructor
+public class AdminDashboardController implements AdminDashboardControllerDocs {
+
+    private final AdminDashboardService adminDashboardService;
+
+    @GetMapping("/stats")
+    @Override
+    public ResponseEntity<AdminDashboardStatsResponse> getDashboardStats() {
+        return ResponseEntity.ok(adminDashboardService.getDashboardStats());
+    }
+}

src/main/java/redot/redot_server/domain/admin/controller/docs/AdminDashboardControllerDocs.java

@@ -0,0 +1,18 @@
+package redot.redot_server.domain.admin.controller.docs;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.ResponseEntity;
+import redot.redot_server.domain.admin.dto.response.AdminDashboardStatsResponse;
+
+@Tag(name = "Admin Dashboard", description = "관리자 대시보드 통계 API")
+public interface AdminDashboardControllerDocs {
+
+    @Operation(summary = "대시보드 통계 조회", description = "관리자 대시보드에 필요한 요약 통계를 제공합니다.")
+    @ApiResponse(responseCode = "200", description = "조회 성공",
+            content = @Content(schema = @Schema(implementation = AdminDashboardStatsResponse.class)))
+    ResponseEntity<AdminDashboardStatsResponse> getDashboardStats();
+}

src/main/java/redot/redot_server/domain/admin/dto/response/AdminDashboardStatsResponse.java

@@ -0,0 +1,11 @@
+package redot.redot_server.domain.admin.dto.response;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record AdminDashboardStatsResponse(
+        @Schema(description = "전체 Redot 회원 수") long totalRedotMembers,
+        @Schema(description = "전일까지 누적된 Redot 회원 수") long redotMembersUntilYesterday,
+        @Schema(description = "상태가 PENDING 인 상담 요청 수") long pendingConsultationCount,
+        @Schema(description = "등록된 관리자 수") long adminCount
+) {
+}

src/main/java/redot/redot_server/domain/admin/service/AdminDashboardService.java

@@ -0,0 +1,45 @@
+package redot.redot_server.domain.admin.service;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import redot.redot_server.domain.admin.dto.response.AdminDashboardStatsResponse;
+import redot.redot_server.domain.admin.repository.AdminRepository;
+import redot.redot_server.domain.redot.consultation.entity.ConsultationStatus;
+import redot.redot_server.domain.redot.consultation.repository.ConsultationRepository;
+import redot.redot_server.domain.redot.member.repository.RedotMemberRepository;
+
+@Service
+@RequiredArgsConstructor
+@Transactional(readOnly = true)
+public class AdminDashboardService {
+
+    private final RedotMemberRepository redotMemberRepository;
+    private final ConsultationRepository consultationRepository;
+    private final AdminRepository adminRepository;
+
+    public AdminDashboardStatsResponse getDashboardStats() {
+        ZoneId kstZone = ZoneId.of("Asia/Seoul");
+        LocalDateTime startOfTodayKst = LocalDate.now(kstZone).atStartOfDay();
+        LocalDateTime startOfTodayUtc = startOfTodayKst.atZone(kstZone)
+                .withZoneSameInstant(ZoneOffset.UTC)
+                .toLocalDateTime();
+
+        long totalRedotMembers = redotMemberRepository.count();
+        long redotMembersUntilYesterday = redotMemberRepository.countByCreatedAtBefore(startOfTodayUtc);
+
+        long pendingConsultationCount = consultationRepository.countByStatus(ConsultationStatus.PENDING);
+        long adminCount = adminRepository.count();
+
+        return new AdminDashboardStatsResponse(
+                totalRedotMembers,
+                redotMembersUntilYesterday,
+                pendingConsultationCount,
+                adminCount
+        );
+    }
+}

src/main/java/redot/redot_server/domain/redot/consultation/repository/ConsultationRepository.java

@@ -2,6 +2,9 @@
 
 import org.springframework.data.jpa.repository.JpaRepository;
 import redot.redot_server.domain.redot.consultation.entity.Consultation;
+import redot.redot_server.domain.redot.consultation.entity.ConsultationStatus;
 
 public interface ConsultationRepository extends JpaRepository<Consultation, Long>, ConsultationRepositoryCustom {
+
+    long countByStatus(ConsultationStatus status);
 }

src/main/java/redot/redot_server/domain/redot/member/repository/RedotMemberRepository.java

@@ -1,5 +1,6 @@
 package redot.redot_server.domain.redot.member.repository;
 
+import java.time.LocalDateTime;
 import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 import redot.redot_server.domain.redot.member.entity.RedotMember;
@@ -11,4 +12,6 @@ public interface RedotMemberRepository extends JpaRepository<RedotMember, Long>,
     Optional<RedotMember> findByEmail(String email);
 
     Optional<RedotMember> findBySocialProviderAndSocialProviderId(SocialProvider provider, String socialProviderId);
+
+    long countByCreatedAtBefore(LocalDateTime before);
 }

src/main/resources/db/migration/V7__add_index_to_redot_members_created_at.sql

@@ -0,0 +1 @@
+CREATE INDEX IF NOT EXISTS idx_redot_members_created_at ON redot_members(created_at);