[Feat] 페이징 그룹 목록 페이징 api 구현완료 (#22-1)

KNU-HAEDAL · Jun 1, 2024 · 68f5c76 · 68f5c76
1 parent 40d78fc
commit 68f5c76
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Showing 5 changed files with 90 additions and 2 deletions.
diff --git a/...er/app/src/main/java/org/haedal/zzansuni/controller/challengegroup/ChallengeGroupRes.java b/...er/app/src/main/java/org/haedal/zzansuni/controller/challengegroup/ChallengeGroupRes.java
@@ -37,6 +37,19 @@ public static ChallengeGroupDto from(
                     .category(challengeGroupDetail.getCategory())
                     .build();
         }
+        public static ChallengeGroupDto from(
+                ChallengeGroupModel.Info challengeGroupInfo
+        ){
+            return ChallengeGroupDto.builder()
+                    .id(challengeGroupInfo.getId())
+                    .title(challengeGroupInfo.getTitle())
+                    .content(challengeGroupInfo.getContent())
+                    .participantCount(challengeGroupInfo.getCumulativeCount())
+                    .startDate(challengeGroupInfo.getMinStartDate())
+                    .endDate(challengeGroupInfo.getMaxEndDate())
+                    .category(challengeGroupInfo.getCategory())
+                    .build();
+        }
 
     }
 

diff --git a/...rver/app/src/main/java/org/haedal/zzansuni/domain/challengegroup/ChallengeGroupModel.java b/...rver/app/src/main/java/org/haedal/zzansuni/domain/challengegroup/ChallengeGroupModel.java
@@ -28,6 +28,48 @@ public static Main from(ChallengeGroup challengeGroup) {
         }
     }
 
+    @Getter
+    @Builder
+    public static class Info {
+        private Long id;
+        private ChallengeCategory category;
+        private String title;
+        private String content;
+        private String guide;
+        private Integer cumulativeCount;
+        private List<ChallengeModel> challenges;
+
+        public LocalDate getMinStartDate() {
+            return challenges.stream()
+                    .map(ChallengeModel::getStartDate)
+                    .min(LocalDate::compareTo)
+                    .orElse(LocalDate.now());
+        }
+
+        public LocalDate getMaxEndDate() {
+            return challenges.stream()
+                    .map(ChallengeModel::getEndDate)
+                    .max(LocalDate::compareTo)
+                    .orElse(LocalDate.now());
+        }
+
+        public static Info from(ChallengeGroup challengeGroup) {
+            var challenges = challengeGroup.getChallenges().stream()
+                    .map(ChallengeModel::from)
+                    .toList();
+            return Info.builder()
+                    .id(challengeGroup.getId())
+                    .category(challengeGroup.getCategory())
+                    .title(challengeGroup.getTitle())
+                    .content(challengeGroup.getContent())
+                    .guide(challengeGroup.getGuide())
+                    .cumulativeCount(challengeGroup.getCumulativeCount())
+                    .challenges(challenges)
+                    .build();
+        }
+    }
+
+
     @Getter
     @Builder
     public static class Detail {

diff --git a/...p/src/main/java/org/haedal/zzansuni/domain/challengegroup/ChallengeGroupQueryService.java b/...p/src/main/java/org/haedal/zzansuni/domain/challengegroup/ChallengeGroupQueryService.java
@@ -15,8 +15,9 @@ public class ChallengeGroupQueryService {
     private final ChallengeGroupImageReader challengeGroupImageReader;
 
     @Transactional(readOnly = true)
-    public Page<ChallengeGroupModel.Detail> getChallengeGroupsPaging(Pageable pageable, ChallengeCategory category) {
-        throw new UnsupportedOperationException("Not implemented yet");
+    public Page<ChallengeGroupModel.Info> getChallengeGroupsPaging(Pageable pageable, ChallengeCategory category) {
+        Page<ChallengeGroup> challengeGroups = challengeGroupReader.getChallengeGroupsPagingByCategory(pageable, category);
+        return challengeGroups.map(ChallengeGroupModel.Info::from);
     }
 
     @Transactional(readOnly = true)

diff --git a/...ver/app/src/main/java/org/haedal/zzansuni/domain/challengegroup/ChallengeGroupReader.java b/...ver/app/src/main/java/org/haedal/zzansuni/domain/challengegroup/ChallengeGroupReader.java
@@ -1,7 +1,12 @@
 package org.haedal.zzansuni.domain.challengegroup;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
 public interface ChallengeGroupReader {
     ChallengeGroup getById(Long challengeGroupId);
 
     ChallengeGroup getByIdWithChallenges(Long challengeGroupId);
+
+    Page<ChallengeGroup> getChallengeGroupsPagingByCategory(Pageable pageable, ChallengeCategory category);
 }
diff --git a/...main/java/org/haedal/zzansuni/infrastructure/challengegroup/ChallengeGroupReaderImpl.java b/...main/java/org/haedal/zzansuni/infrastructure/challengegroup/ChallengeGroupReaderImpl.java
@@ -1,15 +1,23 @@
 package org.haedal.zzansuni.infrastructure.challengegroup;
 
+import com.querydsl.jpa.impl.JPAQueryFactory;
 import lombok.RequiredArgsConstructor;
+import org.haedal.zzansuni.domain.challengegroup.ChallengeCategory;
 import org.haedal.zzansuni.domain.challengegroup.ChallengeGroup;
 import org.haedal.zzansuni.domain.challengegroup.ChallengeGroupReader;
+import org.haedal.zzansuni.domain.challengegroup.QChallengeGroup;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageImpl;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Component;
 
+import java.util.List;
 import java.util.NoSuchElementException;
 
 @Component
 @RequiredArgsConstructor
 public class ChallengeGroupReaderImpl implements ChallengeGroupReader {
+    private final JPAQueryFactory queryFactory;
     private final ChallengeGroupRepository challengeGroupRepository;
     @Override
     public ChallengeGroup getById(Long challengeGroupId) {
@@ -24,4 +32,23 @@ public ChallengeGroup getByIdWithChallenges(Long challengeGroupId) {
                 .findByIdWithChallenges(challengeGroupId)
                 .orElseThrow(NoSuchElementException::new);
     }
+
+    @Override
+    public Page<ChallengeGroup> getChallengeGroupsPagingByCategory(Pageable pageable, ChallengeCategory category) {
+        Long count = queryFactory
+                .select(QChallengeGroup.challengeGroup.count())
+                .from(QChallengeGroup.challengeGroup)
+                .where(QChallengeGroup.challengeGroup.category.eq(category))
+                .fetchOne();
+
+        List<ChallengeGroup> page = queryFactory
+                .selectFrom(QChallengeGroup.challengeGroup)
+                .where(QChallengeGroup.challengeGroup.category.eq(category))
+                .leftJoin(QChallengeGroup.challengeGroup.challenges).fetchJoin()
+                .offset(pageable.getOffset())
+                .limit(pageable.getPageSize())
+                .fetch();
+
+        return new PageImpl<>(page, pageable, count == null ? 0 : count);
+    }
 }