✨ [OMF-337] 열려있는 설문 수 및 최고 참여 보상 코인 조회 API 추가

src/main/java/OneQ/OnSurvey/domain/survey/controller/SurveyStatsController.java

@@ -1,8 +1,11 @@
 package OneQ.OnSurvey.domain.survey.controller;
 
 import OneQ.OnSurvey.domain.survey.model.dto.GlobalStats;
+import OneQ.OnSurvey.domain.survey.model.dto.OpenSurveyStats;
 import OneQ.OnSurvey.domain.survey.model.response.GlobalStatsResponse;
+import OneQ.OnSurvey.domain.survey.model.response.OpenSurveyStatsResponse;
 import OneQ.OnSurvey.domain.survey.service.SurveyGlobalStatsService;
+import OneQ.OnSurvey.domain.survey.service.query.SurveyQuery;
 import OneQ.OnSurvey.global.common.response.SuccessResponse;
 import io.swagger.v3.oas.annotations.Operation;
 import lombok.RequiredArgsConstructor;
@@ -16,11 +19,19 @@
 public class SurveyStatsController {
 
     private final SurveyGlobalStatsService surveyGlobalStatsService;
+    private final SurveyQuery surveyQuery;
 
     @GetMapping("/global-stats")
     @Operation(summary = "전체 설문 전역 통계 조회", description = "전체 설문에 대한 총 목표 수/참여자 수/프로모션 지급자 수/일간 활성 사용자 수를 반환합니다.")
     public SuccessResponse<GlobalStatsResponse> getGlobalStats() {
         GlobalStats stats = surveyGlobalStatsService.getStats();
         return SuccessResponse.ok(GlobalStatsResponse.from(stats));
     }
+
+    @GetMapping("/open-stats")
+    @Operation(summary = "열린 설문 통계 조회", description = "현재 진행 중인 설문 수와 가장 높은 참여 보상 코인 금액을 반환합니다.")
+    public SuccessResponse<OpenSurveyStatsResponse> getOpenStats() {
+        OpenSurveyStats stats = surveyQuery.getOpenSurveyStats();
+        return SuccessResponse.ok(OpenSurveyStatsResponse.from(stats));
+    }
 }

src/main/java/OneQ/OnSurvey/domain/survey/model/dto/OpenSurveyStats.java

@@ -0,0 +1,13 @@
+package OneQ.OnSurvey.domain.survey.model.dto;
+
+public record OpenSurveyStats(
+    Long openSurveyCount,
+    Integer maxRewardCoin
+) {
+    public static OpenSurveyStats of(Long openSurveyCount, Integer maxRewardCoin) {
+        return new OpenSurveyStats(
+            openSurveyCount != null ? openSurveyCount : 0L,
+            maxRewardCoin != null ? maxRewardCoin : 0
+        );
+    }
+}

src/main/java/OneQ/OnSurvey/domain/survey/model/response/OpenSurveyStatsResponse.java

@@ -0,0 +1,12 @@
+package OneQ.OnSurvey.domain.survey.model.response;
+
+import OneQ.OnSurvey.domain.survey.model.dto.OpenSurveyStats;
+
+public record OpenSurveyStatsResponse(
+    Long openSurveyCount,
+    Integer maxRewardCoin
+) {
+    public static OpenSurveyStatsResponse from(OpenSurveyStats stats) {
+        return new OpenSurveyStatsResponse(stats.openSurveyCount(), stats.maxRewardCoin());
+    }
+}

src/main/java/OneQ/OnSurvey/domain/survey/repository/SurveyRepository.java

@@ -5,6 +5,7 @@
 import OneQ.OnSurvey.domain.survey.entity.Survey;
 import OneQ.OnSurvey.domain.survey.model.SurveyStatus;
 import OneQ.OnSurvey.domain.survey.model.dto.OngoingSurveyStats;
+import OneQ.OnSurvey.domain.survey.model.dto.OpenSurveyStats;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyDetailData;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyListView;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveySearchQuery;
@@ -37,4 +38,5 @@ Slice<SurveyWithEligibility> getSurveyListWithEligibility(
     List<Long> closeDueSurveys();
 
     List<OngoingSurveyStats> findOngoingSurveys();
+    OpenSurveyStats findOpenSurveyStats();
 }

src/main/java/OneQ/OnSurvey/domain/survey/repository/SurveyRepositoryImpl.java

@@ -9,6 +9,7 @@
 import OneQ.OnSurvey.domain.survey.model.Residence;
 import OneQ.OnSurvey.domain.survey.model.SurveyStatus;
 import OneQ.OnSurvey.domain.survey.model.dto.OngoingSurveyStats;
+import OneQ.OnSurvey.domain.survey.model.dto.OpenSurveyStats;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyDetailData;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyListView;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveySearchQuery;
@@ -319,4 +320,21 @@ public List<OngoingSurveyStats> findOngoingSurveys() {
             .orderBy(survey.id.desc())
             .fetch();
     }
+
+    @Override
+    public OpenSurveyStats findOpenSurveyStats() {
+        Tuple result = jpaQueryFactory
+            .select(survey.count(), surveyInfo.promotionAmount.max())
+            .from(survey)
+            .leftJoin(surveyInfo).on(survey.id.eq(surveyInfo.surveyId))
+            .where(survey.status.eq(SurveyStatus.ONGOING))
+            .fetchOne();
+
+        if (result == null) {
+            return OpenSurveyStats.of(0L, null);
+        }
+        Long count = result.get(survey.count());
+        Integer maxCoin = result.get(surveyInfo.promotionAmount.max());
+        return OpenSurveyStats.of(count, maxCoin);
+    }
 }

src/main/java/OneQ/OnSurvey/domain/survey/service/query/SurveyQuery.java

@@ -4,6 +4,7 @@
 import OneQ.OnSurvey.domain.survey.entity.Survey;
 import OneQ.OnSurvey.domain.survey.model.SurveyStatus;
 import OneQ.OnSurvey.domain.survey.model.dto.OngoingSurveyStats;
+import OneQ.OnSurvey.domain.survey.model.dto.OpenSurveyStats;
 import OneQ.OnSurvey.domain.survey.model.dto.ScreeningViewData;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyDetailData;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyListView;
@@ -47,6 +48,7 @@ ParticipationScreeningListResponse getScreeningList(
     // 외부 PORT
     Page<SurveyListView> getPagedSurveyListViewByQuery(Pageable pageable, SurveySearchQuery query);
     List<OngoingSurveyStats> getOngoingSurveyStats();
+    OpenSurveyStats getOpenSurveyStats();
     SurveyDetailData getSurveyDetailById(Long surveyId);
     ScreeningViewData getScreeningIntroBySurveyId(Long surveyId);
     List<SectionDto> getSectionDtoListBySurveyId(Long surveyId);

src/main/java/OneQ/OnSurvey/domain/survey/service/query/SurveyQueryService.java

@@ -17,6 +17,7 @@
 import OneQ.OnSurvey.domain.survey.model.Residence;
 import OneQ.OnSurvey.domain.survey.model.SurveyStatus;
 import OneQ.OnSurvey.domain.survey.model.dto.OngoingSurveyStats;
+import OneQ.OnSurvey.domain.survey.model.dto.OpenSurveyStats;
 import OneQ.OnSurvey.domain.survey.model.dto.ScreeningIntroData;
 import OneQ.OnSurvey.domain.survey.model.dto.ScreeningViewData;
 import OneQ.OnSurvey.domain.survey.model.dto.SurveyDetailData;
@@ -531,4 +532,9 @@ public List<SectionDto> getSectionDtoListBySurveyId(Long surveyId) {
     public List<OngoingSurveyStats> getOngoingSurveyStats() {
         return surveyRepository.findOngoingSurveys();
     }
+
+    @Override
+    public OpenSurveyStats getOpenSurveyStats() {
+        return surveyRepository.findOpenSurveyStats();
+    }
 }