BE: [feat] 크루홈 - 공지 조회 CSID-DGU#83

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/notice/controller/NoticePostController.java

@@ -1,6 +1,7 @@
 package RunningMachines.R2R.domain.crew.post.notice.controller;
 
 import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
+import RunningMachines.R2R.domain.crew.post.notice.dto.CrewMainNoticeResponseDto;
 import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostCreateRequestDto;
 import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostResponseDto;
 import RunningMachines.R2R.domain.crew.post.notice.service.NoticePostCommandService;
@@ -34,4 +35,9 @@ public ResponseEntity<Long> createNoticePost(@PathVariable Long crewId, @Request
     public ResponseEntity<NoticePostResponseDto> getNoticePostDetail(@PathVariable Long crewId, @PathVariable Long crewPostId) {
         return ResponseEntity.ok(noticePostQueryService.getPostDetail(crewId, crewPostId));
     }
+
+    @GetMapping
+    public ResponseEntity<CrewMainNoticeResponseDto> getNoticePostsByCrew(@PathVariable Long crewId) {
+        return ResponseEntity.ok(noticePostQueryService.getNoticePostsByCrew(crewId));
+    }
 }

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/notice/dto/CrewMainNoticeResponseDto.java

@@ -0,0 +1,24 @@
+package RunningMachines.R2R.domain.crew.post.notice.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+@Builder
+public class CrewMainNoticeResponseDto {
+    private String crewTitle;
+    private int postCount;
+    private int memberCount;
+    private List<NoticePostSimpleResponseDto> noticePost;
+
+    public static CrewMainNoticeResponseDto of(String crewTitle, int postCount, int memberCount, List<NoticePostSimpleResponseDto> noticePost) {
+        return CrewMainNoticeResponseDto.builder()
+                .crewTitle(crewTitle)
+                .postCount(postCount)
+                .memberCount(memberCount)
+                .noticePost(noticePost)
+                .build();
+    }
+}

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/notice/dto/NoticePostSimpleResponseDto.java

@@ -0,0 +1,25 @@
+package RunningMachines.R2R.domain.crew.post.notice.dto;
+
+import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Builder
+public class NoticePostSimpleResponseDto {
+    private long crewPostId;
+    private String title;
+    private String author;
+    private LocalDateTime lastModified;
+
+    public static NoticePostSimpleResponseDto fromEntity(CrewPost crewPost) {
+        return NoticePostSimpleResponseDto.builder()
+                .crewPostId(crewPost.getId())
+                .title(crewPost.getTitle())
+                .author(crewPost.getUser().getNickname())
+                .lastModified(crewPost.getUpdatedAt())
+                .build();
+    }
+}

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/notice/service/NoticePostQueryService.java

@@ -2,8 +2,11 @@
 
 import RunningMachines.R2R.domain.crew.board.entity.CrewBoard;
 import RunningMachines.R2R.domain.crew.common.entity.Crew;
+import RunningMachines.R2R.domain.crew.common.repository.CrewRepository;
 import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
+import RunningMachines.R2R.domain.crew.post.notice.dto.CrewMainNoticeResponseDto;
 import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostResponseDto;
+import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostSimpleResponseDto;
 import RunningMachines.R2R.domain.crew.post.repository.CrewPostRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -15,10 +18,32 @@
 @RequiredArgsConstructor
 public class NoticePostQueryService {
     private final CrewPostRepository crewPostRepository;
+    private final CrewRepository crewRepository;
 
     public NoticePostResponseDto getPostDetail(Long crewId, Long crewpostId) {
         CrewPost noticePost = crewPostRepository.findByIdAndCrewIdAndBoard(crewpostId, crewId, CrewBoard.NOTICE)
                 .orElseThrow(() -> new IllegalArgumentException("공지글을 찾을 수 없습니다."));
         return NoticePostResponseDto.fromEntity(noticePost);
     }
+
+    public CrewMainNoticeResponseDto getNoticePostsByCrew(Long crewId) {
+        // 크루 정보 조회
+        Crew crew = crewRepository.findById(crewId)
+                .orElseThrow(() -> new IllegalArgumentException("크루를 찾을 수 없습니다."));
+
+        // 공지글 조회
+        List<CrewPost> noticePosts = crewPostRepository.findAllByCrewIdAndBoard(crewId, CrewBoard.NOTICE);
+
+        // 공지글 미리보기
+        List<NoticePostSimpleResponseDto> noticePostSimpleResponseDtos = noticePosts.stream()
+                .map(NoticePostSimpleResponseDto::fromEntity)
+                .collect(Collectors.toList());
+
+        return CrewMainNoticeResponseDto.of(
+                crew.getTitle(),
+                noticePosts.size(),
+                crew.getCrewUsers().size(),
+                noticePostSimpleResponseDtos
+        );
+    }
 }