SISC-BE-부모게시판 목록 조회

backend/src/main/java/org/sejongisc/backend/board/controller/BoardController.java

@@ -3,9 +3,11 @@
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
+import java.util.List;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.sejongisc.backend.board.dto.BoardRequest;
+import org.sejongisc.backend.board.dto.BoardResponse;
 import org.sejongisc.backend.board.dto.CommentRequest;
 import org.sejongisc.backend.board.dto.PostRequest;
 import org.sejongisc.backend.board.dto.PostResponse;
@@ -147,6 +149,17 @@ public ResponseEntity<Void> createBoard(
     return ResponseEntity.ok().build();
   }
 
+  // 게시판 생성
+  @Operation(
+      summary = "부모 게시판 목록 조회",
+      description = "최상위 부모 게시판들의 목록을 조회합니다."
+  )
+  @GetMapping("/parents")
+  public ResponseEntity<List<BoardResponse>> getParentBoards(
+      @AuthenticationPrincipal CustomUserDetails customUserDetails) {
+    return ResponseEntity.ok(postService.getParentBoards());
+  }
+
   // 좋아요 토글
   @Operation(
       summary = "좋아요 등록 및 취소",

backend/src/main/java/org/sejongisc/backend/board/dto/BoardResponse.java

@@ -0,0 +1,37 @@
+package org.sejongisc.backend.board.dto;
+
+import java.util.UUID;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import org.sejongisc.backend.board.entity.Board;
+import org.sejongisc.backend.user.entity.User;
+
+@ToString
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+@Setter
+@Builder
+public class BoardResponse {
+
+  private UUID boardId;
+
+  private String boardName;
+
+  private User createdBy;
+
+  private UUID parentBoardId;
+
+  public static BoardResponse of(Board board) {
+    return BoardResponse.builder()
+        .boardId(board.getBoardId())
+        .boardName(board.getBoardName())
+        .createdBy(board.getCreatedBy())
+        .parentBoardId(board.getParentBoard() != null ? board.getParentBoard().getBoardId() : null)
+        .build();
+  }
+}

backend/src/main/java/org/sejongisc/backend/board/repository/BoardRepository.java

@@ -1,9 +1,11 @@
 package org.sejongisc.backend.board.repository;
 
+import java.util.List;
 import java.util.UUID;
 import org.sejongisc.backend.board.entity.Board;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface BoardRepository extends JpaRepository<Board, UUID> {
 
+  List<Board> findAllByParentBoardIsNull();
 }

backend/src/main/java/org/sejongisc/backend/board/service/PostService.java

@@ -1,7 +1,9 @@
 package org.sejongisc.backend.board.service;
 
+import java.util.List;
 import java.util.UUID;
 import org.sejongisc.backend.board.dto.BoardRequest;
+import org.sejongisc.backend.board.dto.BoardResponse;
 import org.sejongisc.backend.board.dto.PostRequest;
 import org.sejongisc.backend.board.dto.PostResponse;
 import org.springframework.data.domain.Page;
@@ -28,4 +30,7 @@ public interface PostService {
 
   // 게시판 생성
   void createBoard(BoardRequest request, UUID userId);
+
+  // 부모 게시판 목록 조회
+  List<BoardResponse> getParentBoards();
 }

backend/src/main/java/org/sejongisc/backend/board/service/PostServiceImpl.java

@@ -5,6 +5,7 @@
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.sejongisc.backend.board.dto.BoardRequest;
+import org.sejongisc.backend.board.dto.BoardResponse;
 import org.sejongisc.backend.board.dto.CommentResponse;
 import org.sejongisc.backend.board.dto.PostAttachmentResponse;
 import org.sejongisc.backend.board.dto.PostRequest;
@@ -265,6 +266,7 @@ public PostResponse getPostDetail(UUID postId, int pageNumber, int pageSize) {
   }
 
   // 게시판 생성
+  @Override
   @Transactional
   public void createBoard(BoardRequest request, UUID userId) {
     User user = userRepository.findById(userId)
@@ -293,6 +295,17 @@ public void createBoard(BoardRequest request, UUID userId) {
     boardRepository.save(board);
   }
 
+  // 부모 게시판 조회
+  @Override
+  @Transactional(readOnly = true)
+  public List<BoardResponse> getParentBoards() {
+    List<Board> parentBoards = boardRepository.findAllByParentBoardIsNull();
+
+    return parentBoards.stream()
+        .map(BoardResponse::of)
+        .toList();
+  }
+
   private PostResponse mapToPostResponse(Post post) {
     return PostResponse.builder()
         .postId(post.getPostId())