Merge pull request #28 from jeondain/feat/#27

jeondain · web-flow · commit 5290bb7abdd2 · 2025-11-19T14:56:41.000+09:00
[feat #27] 댓글 작성 API 구현
diff --git a/src/main/java/com/fromm/leafmap/domain/comment/controller/CommentController.java b/src/main/java/com/fromm/leafmap/domain/comment/controller/CommentController.java
@@ -0,0 +1,33 @@
+package com.fromm.leafmap.domain.comment.controller;
+
+import com.fromm.leafmap.domain.comment.dto.CommentRequestDTO;
+import com.fromm.leafmap.domain.comment.dto.CommentResponseDTO;
+import com.fromm.leafmap.domain.comment.service.CommentService;
+import com.fromm.leafmap.domain.member.entity.Member;
+import com.fromm.leafmap.global.annotation.CurrentMember;
+import com.fromm.leafmap.global.apiPayload.ApiResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.*;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("api/posts/{postId}/comments")
+public class CommentController {
+
+    private final CommentService commentService;
+
+    @PostMapping
+    @Operation(summary = "댓글 작성", description = "상위 댓글이 있을 경우 parentId로 전달해주세요.")
+    public ApiResponse<CommentResponseDTO.AddCommentResultDTO> addComment(
+            @PathVariable Long postId,
+            @RequestBody CommentRequestDTO.AddCommentDTO addCommentDTO,
+            @CurrentMember Member member) {
+
+        CommentResponseDTO.AddCommentResultDTO addCommentResultDTO = commentService.addComment(postId, addCommentDTO, member);
+        return ApiResponse.onSuccess(addCommentResultDTO);
+    }
+}
+
diff --git a/src/main/java/com/fromm/leafmap/domain/comment/dto/CommentRequestDTO.java b/src/main/java/com/fromm/leafmap/domain/comment/dto/CommentRequestDTO.java
@@ -0,0 +1,18 @@
+package com.fromm.leafmap.domain.comment.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+public class CommentRequestDTO {
+
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class AddCommentDTO {
+        private String content;
+        private Long parentId;
+    }
+}
diff --git a/src/main/java/com/fromm/leafmap/domain/comment/dto/CommentResponseDTO.java b/src/main/java/com/fromm/leafmap/domain/comment/dto/CommentResponseDTO.java
@@ -14,10 +14,19 @@ public class CommentResponseDTO {
     @NoArgsConstructor
     @AllArgsConstructor
     public static class CommentDTO {
-        private Long id;
+        private Long commentId;
+        private Long parentId;
         private String content;
         private String nickname;
         private Boolean isWriter;
         private LocalDateTime createdAt;
     }
+
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class AddCommentResultDTO {
+        private Long commentId;
+    }
 }
diff --git a/src/main/java/com/fromm/leafmap/domain/comment/repository/CommentRepository.java b/src/main/java/com/fromm/leafmap/domain/comment/repository/CommentRepository.java
@@ -0,0 +1,7 @@
+package com.fromm.leafmap.domain.comment.repository;
+
+import com.fromm.leafmap.domain.comment.entity.Comment;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface CommentRepository extends JpaRepository<Comment, Long> {
+}
diff --git a/src/main/java/com/fromm/leafmap/domain/comment/service/CommentService.java b/src/main/java/com/fromm/leafmap/domain/comment/service/CommentService.java
@@ -0,0 +1,9 @@
+package com.fromm.leafmap.domain.comment.service;
+
+import com.fromm.leafmap.domain.comment.dto.CommentRequestDTO;
+import com.fromm.leafmap.domain.comment.dto.CommentResponseDTO;
+import com.fromm.leafmap.domain.member.entity.Member;
+
+public interface CommentService {
+    public CommentResponseDTO.AddCommentResultDTO addComment(Long postId, CommentRequestDTO.AddCommentDTO request, Member member);
+}
diff --git a/src/main/java/com/fromm/leafmap/domain/comment/service/CommentServiceImpl.java b/src/main/java/com/fromm/leafmap/domain/comment/service/CommentServiceImpl.java
@@ -0,0 +1,53 @@
+package com.fromm.leafmap.domain.comment.service;
+
+import com.fromm.leafmap.domain.comment.dto.CommentRequestDTO;
+import com.fromm.leafmap.domain.comment.dto.CommentResponseDTO;
+import com.fromm.leafmap.domain.comment.entity.Comment;
+import com.fromm.leafmap.domain.comment.repository.CommentRepository;
+import com.fromm.leafmap.domain.member.entity.Member;
+import com.fromm.leafmap.domain.post.entity.Post;
+import com.fromm.leafmap.domain.post.repository.PostRepository;
+import com.fromm.leafmap.global.apiPayload.code.status.ErrorStatus;
+import com.fromm.leafmap.global.apiPayload.exception.handler.ErrorHandler;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class CommentServiceImpl implements CommentService {
+
+    private final PostRepository postRepository;
+    private final CommentRepository commentRepository;
+
+    @Override
+    @Transactional
+    public CommentResponseDTO.AddCommentResultDTO addComment(Long postId, CommentRequestDTO.AddCommentDTO request, Member member) {
+        Post post = postRepository.findById(postId)
+                .orElseThrow(() -> new ErrorHandler(ErrorStatus.POST_NOT_FOUND));
+
+        // 부모 댓글 조회 (대댓글인 경우)
+        Comment parent = null;
+        if (request.getParentId() != 0) {
+            parent = commentRepository.findById(request.getParentId())
+                    .orElseThrow(() -> new ErrorHandler(ErrorStatus.COMMENT_NOT_FOUND));
+
+            // 부모 댓글이 해당 게시글에 속하지 않으면 예외
+            if (!parent.getPost().getId().equals(postId)) {
+                throw new ErrorHandler(ErrorStatus.INVALID_COMMENT_PARENT);
+            }
+        }
+
+        Comment comment = Comment.builder()
+                .content(request.getContent())
+                .post(post)
+                .member(member)
+                .parent(parent)
+                .build();
+
+        commentRepository.save(comment);
+        return CommentResponseDTO.AddCommentResultDTO.builder()
+                .commentId(comment.getId())
+                .build();
+    }
+}
diff --git a/src/main/java/com/fromm/leafmap/domain/post/controller/PostController.java b/src/main/java/com/fromm/leafmap/domain/post/controller/PostController.java
@@ -21,7 +21,7 @@
 @Slf4j
 @RestController
 @RequiredArgsConstructor
-@RequestMapping("/api/posts")
+@RequestMapping("/api/boards")
 public class PostController {
 
     private final PostService postService;
@@ -35,7 +35,7 @@ public ApiResponse<String> createMajortipsPosts() {
         return ApiResponse.onSuccess("Majortips 게시글 생성 완료");
     }
 
-    @PostMapping(value = "/{boardType}", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
+    @PostMapping(value = "/{boardType}/posts", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
     @Operation(summary = "게시글 작성", description = "게시글 정보는 JSON 형식으로, 이미지는 Multipart(Form-Data) 형식으로 함께 전달해주세요.\n\n" )
     public ApiResponse<PostResponseDTO.AddPostResultDTO> addPost(
             @RequestPart(value = "data") PostRequestDTO.AddPostRequestDTO addPostRequestDTO,
@@ -48,7 +48,7 @@ public ApiResponse<PostResponseDTO.AddPostResultDTO> addPost(
         return ApiResponse.onSuccess(addPostResultDTO);
     }
 
-    @GetMapping(value = "/{boardType}")
+    @GetMapping(value = "/{boardType}/posts")
     @Operation(summary = "게시판 목록 조회", description = "첫 페이지 조회 시 cursor 값으로 0을 전달해주세요.\n\n" +
             "첫 페이지가 아닌 경우 이전 응답의 hasNext가 true일 때, nextCursor 값을 cursor로 전달해주세요.")
     public ApiResponse<PostResponseDTO.PostListResultDTO> getPostList(
@@ -61,7 +61,7 @@ public ApiResponse<PostResponseDTO.PostListResultDTO> getPostList(
         return ApiResponse.onSuccess(postListResultDTO);
     }
 
-    @GetMapping(value = "/{boardType}/{postId}")
+    @GetMapping(value = "/{boardType}/posts/{postId}")
     @Operation(summary = "게시판 상세 조회")
     public ApiResponse<PostResponseDTO.PostDetailResultDTO> getPostDetail(
             @PathVariable BoardType boardType,
@@ -72,7 +72,7 @@ public ApiResponse<PostResponseDTO.PostDetailResultDTO> getPostDetail(
         return ApiResponse.onSuccess(postDetailResultDTO);
     }
 
-    @PostMapping(value ="/{boardType}/{postId}/like")
+    @PostMapping(value ="/{boardType}/posts/{postId}/like")
     @Operation(summary = "게시글 추천 토글", description = "추천하지 않은 상태라면 추천이 추가되고, 이미 추천한 상태라면 추천이 취소됩니다.")
     public ApiResponse<PostLikeResponseDTO.PostLikeResultDTO> toggleLike(
             @PathVariable BoardType boardType,
diff --git a/src/main/java/com/fromm/leafmap/domain/post/service/PostServiceImpl.java b/src/main/java/com/fromm/leafmap/domain/post/service/PostServiceImpl.java
@@ -119,7 +119,8 @@ public PostResponseDTO.PostDetailResultDTO getPostDetail(BoardType boardType, Lo
                             && member.getId().equals(c.getMember().getId());
 
                     return CommentResponseDTO.CommentDTO.builder()
-                            .id(c.getId())
+                            .commentId(c.getId())
+                            .parentId(c.getParent() != null ? c.getParent().getId() : null)
                             .content(c.getContent())
                             .nickname(c.getMember().getNickname())
                             .isWriter(isCommentWriter)
diff --git a/src/main/java/com/fromm/leafmap/global/apiPayload/code/status/ErrorStatus.java b/src/main/java/com/fromm/leafmap/global/apiPayload/code/status/ErrorStatus.java
@@ -25,7 +25,11 @@ public enum ErrorStatus implements BaseErrorCode {
     MAJOR_NOT_FOUND(HttpStatus.NOT_FOUND, "MAJOR404", "해당하는 전공이 존재하지 않습니다."),
 
     // Post
-    POST_NOT_FOUND(HttpStatus.NOT_FOUND, "POST404", "해당하는 게시글이 존재하지 않습니다.")
+    POST_NOT_FOUND(HttpStatus.NOT_FOUND, "POST404", "해당하는 게시글이 존재하지 않습니다."),
+
+    // Comment
+    COMMENT_NOT_FOUND(HttpStatus.NOT_FOUND, "COMMENT404", "해당하는 댓글이 존재하지 않습니다."),
+    INVALID_COMMENT_PARENT(HttpStatus.BAD_REQUEST, "COMMENT400", "부모 댓글이 해당 게시글에 속하지 않습니다.");
     ;
 
     private final HttpStatus httpStatus;
