BE: [feat] 공지글 상세조회 CSID-DGU#83

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

@@ -1,25 +1,37 @@
 package RunningMachines.R2R.domain.crew.post.notice.controller;
 
+import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
 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;
+import RunningMachines.R2R.domain.crew.post.notice.service.NoticePostQueryService;
 import RunningMachines.R2R.domain.user.entity.User;
 import RunningMachines.R2R.domain.user.service.AuthCommandService;
+import RunningMachines.R2R.domain.user.service.UserCommandService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 @RestController
 @RequestMapping("/crew/{crewId}/notice")
 @RequiredArgsConstructor
 public class NoticePostController {
     private final NoticePostCommandService noticePostCommandService;
+    private final NoticePostQueryService noticePostQueryService;
     private final AuthCommandService authCommandService;
 
-    @PostMapping()
+    @PostMapping
     public ResponseEntity<Long> createNoticePost(@PathVariable Long crewId, @RequestBody NoticePostCreateRequestDto requestDto) {
         User currentUser = authCommandService.getCurrentUser();
         noticePostCommandService.createNoticePost(crewId, currentUser, requestDto);
         return ResponseEntity.ok(crewId);
     }
+
+    @GetMapping("/{crewPostId}")
+    public ResponseEntity<NoticePostResponseDto> getNoticePostDetail(@PathVariable Long crewId, @PathVariable Long crewPostId) {
+        return ResponseEntity.ok(noticePostQueryService.getPostDetail(crewId, crewPostId));
+    }
 }

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

@@ -0,0 +1,27 @@
+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 NoticePostResponseDto {
+    private String title;
+    private String content;
+    private String author;
+    private String crewName;
+    private LocalDateTime createdDate;
+
+    public static NoticePostResponseDto fromEntity(CrewPost crewPost) {
+        return NoticePostResponseDto.builder()
+                .title(crewPost.getTitle())
+                .content(crewPost.getContent())
+                .author(crewPost.getUser().getNickname())
+                .crewName(crewPost.getCrew().getTitle())
+                .createdDate(crewPost.getCreatedAt())
+                .build();
+    }
+}

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

@@ -0,0 +1,24 @@
+package RunningMachines.R2R.domain.crew.post.notice.service;
+
+import RunningMachines.R2R.domain.crew.board.entity.CrewBoard;
+import RunningMachines.R2R.domain.crew.common.entity.Crew;
+import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
+import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostResponseDto;
+import RunningMachines.R2R.domain.crew.post.repository.CrewPostRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+@RequiredArgsConstructor
+public class NoticePostQueryService {
+    private final CrewPostRepository crewPostRepository;
+
+    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);
+    }
+}

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/repository/CrewPostRepository.java

@@ -10,4 +10,6 @@
 public interface CrewPostRepository extends JpaRepository<CrewPost, Long> {
     List<CrewPost> findAllByUserIdAndBoard(Long userId, CrewBoard board);
     List<CrewPost> findAllByCrewIdAndBoard(Long crewId, CrewBoard board);
+
+    Optional<CrewPost> findByIdAndCrewIdAndBoard(Long id, Long crewId, CrewBoard board);
 }