Merge pull request #98 from CSID-DGU/backend/feature/crew

BE: [feat] 공지글 작성하기 #83

src/backend/src/main/java/RunningMachines/R2R/domain/crew/common/repository/CrewUserRepository.java

@@ -1,7 +1,12 @@
 package RunningMachines.R2R.domain.crew.common.repository;
 
+import RunningMachines.R2R.domain.crew.common.entity.Crew;
 import RunningMachines.R2R.domain.crew.common.entity.CrewUser;
+import RunningMachines.R2R.domain.user.entity.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface CrewUserRepository extends JpaRepository<CrewUser, Integer> {
+import java.util.Optional;
+
+public interface CrewUserRepository extends JpaRepository<CrewUser, Long> {
+    Optional<CrewUser> findByCrewAndUser(Crew crew, User user);
 }

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

@@ -0,0 +1,25 @@
+package RunningMachines.R2R.domain.crew.post.notice.controller;
+
+import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostCreateRequestDto;
+import RunningMachines.R2R.domain.crew.post.notice.service.NoticePostCommandService;
+import RunningMachines.R2R.domain.user.entity.User;
+import RunningMachines.R2R.domain.user.service.AuthCommandService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/crew/{crewId}")
+@RequiredArgsConstructor
+public class NoticePostController {
+    private final NoticePostCommandService noticePostCommandService;
+    private final AuthCommandService authCommandService;
+
+    @PostMapping("/notice")
+    public ResponseEntity<Long> createNoticePost(@PathVariable Long crewId, @RequestBody NoticePostCreateRequestDto requestDto) {
+        User currentUser = authCommandService.getCurrentUser();
+        noticePostCommandService.createNoticePost(crewId, currentUser, requestDto);
+        return ResponseEntity.ok(crewId);
+    }
+}

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

@@ -0,0 +1,11 @@
+package RunningMachines.R2R.domain.crew.post.notice.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+public class NoticePostCreateRequestDto {
+    private String title;
+    private String content;
+}

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

@@ -0,0 +1,54 @@
+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.common.entity.CrewRole;
+import RunningMachines.R2R.domain.crew.common.entity.CrewUser;
+import RunningMachines.R2R.domain.crew.common.repository.CrewRepository;
+import RunningMachines.R2R.domain.crew.common.repository.CrewUserRepository;
+import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
+import RunningMachines.R2R.domain.crew.post.notice.dto.NoticePostCreateRequestDto;
+import RunningMachines.R2R.domain.crew.post.repository.CrewPostRepository;
+import RunningMachines.R2R.domain.user.entity.User;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class NoticePostCommandService {
+    private final CrewPostRepository crewPostRepository;
+    private final CrewUserRepository crewUserRepository;
+    private final CrewRepository crewRepository;
+
+    @Transactional
+    public void createNoticePost(Long crewId, User user, NoticePostCreateRequestDto noticePostCreateRequestDto) {
+        Crew crew = validateCrew(crewId);
+        validateLeader(crew, user);
+
+        CrewPost crewPost = CrewPost.builder()
+                .title(noticePostCreateRequestDto.getTitle())
+                .content(noticePostCreateRequestDto.getContent())
+                .board(CrewBoard.NOTICE)
+                .crew(crew)
+                .user(user)
+                .build();
+
+        crewPostRepository.save(crewPost);
+    }
+
+    private Crew validateCrew(Long crewId) {
+        return crewRepository.findById(crewId)
+                .orElseThrow(()-> new IllegalArgumentException("크루를 찾을 수 없습니다."));
+    }
+
+    private void validateLeader(Crew crew, User user) {
+
+        CrewUser crewUser = crewUserRepository.findByCrewAndUser(crew, user)
+                .orElseThrow(() -> new IllegalArgumentException("해당 사용자는 크루에 속해 있지 않습니다."));
+
+        if (crewUser.getRole() != CrewRole.LEADER) {
+            throw new IllegalArgumentException("공지글 작성 권한이 없습니다.");
+        }
+    }
+}

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

@@ -0,0 +1,13 @@
+package RunningMachines.R2R.domain.crew.post.repository;
+
+import RunningMachines.R2R.domain.crew.board.entity.CrewBoard;
+import RunningMachines.R2R.domain.crew.post.entity.CrewPost;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface CrewPostRepository extends JpaRepository<CrewPost, Long> {
+    List<CrewPost> findAllByUserIdAndBoard(Long userId, CrewBoard board);
+    List<CrewPost> findAllByCrewIdAndBoard(Long crewId, CrewBoard board);
+}