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Merge pull request #39 from rhkr8521/feat/#comment-crud
[FEAT] 댓글 CRUD 및 좋아요 기능 구현
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‎src/main/java/com/rhkr8521/mapping/api/comment/controller/CommentController.java‎

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package com.rhkr8521.mapping.api.comment.controller;
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import com.rhkr8521.mapping.api.comment.dto.CommentCreateDTO;
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import com.rhkr8521.mapping.api.comment.dto.CommentResponseDTO;
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import com.rhkr8521.mapping.api.comment.dto.CommentUpdateDTO;
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import com.rhkr8521.mapping.api.comment.service.CommentService;
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import com.rhkr8521.mapping.api.member.service.MemberService;
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import com.rhkr8521.mapping.common.exception.NotFoundException;
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import io.swagger.v3.oas.annotations.Operation;
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import com.rhkr8521.mapping.common.response.ApiResponse;
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import com.rhkr8521.mapping.common.response.ErrorStatus;
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import com.rhkr8521.mapping.common.response.SuccessStatus;
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import io.swagger.v3.oas.annotations.responses.ApiResponses;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import lombok.RequiredArgsConstructor;
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import org.springframework.http.ResponseEntity;
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import org.springframework.security.core.annotation.AuthenticationPrincipal;
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import org.springframework.security.core.userdetails.UserDetails;
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import org.springframework.web.bind.annotation.*;
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import java.util.List;
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@Tag(name = "Comment", description = "댓글 관련 API 입니다.")
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@RestController
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@RequestMapping("/api/v2/comment")
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@RequiredArgsConstructor
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public class CommentController {
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private final CommentService commentService;
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private final MemberService memberService;
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@Operation(
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summary = "댓글 작성 API",
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description = "메모에 댓글을 작성합니다."
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)
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@ApiResponses({
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "201", description = "댓글 등록 성공"),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "400", description = "댓글이 입력되지 않았습니다. / 메모 ID가 입력되지 않았습니다."),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "404", description = "메모를 찾을 수 없습니다.")
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})
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@PostMapping("/new")
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public ResponseEntity<ApiResponse<Void>> createComment(
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@AuthenticationPrincipal UserDetails userDetails,
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CommentCreateDTO commentCreateDTO
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) {
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// Comment 누락시 예외처리
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if (commentCreateDTO.getComment() == null || commentCreateDTO.getComment().isEmpty()) {
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throw new NotFoundException(ErrorStatus.MISSING_COMMENT.getMessage());
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}
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// 게시글 ID 누락시 예외처리
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if (commentCreateDTO.getMemoId() == null) {
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throw new NotFoundException(ErrorStatus.MISSING_COMMENT_MEMOID.getMessage());
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}
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Long userId = memberService.getUserIdByEmail(userDetails.getUsername());
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commentService.createComment(commentCreateDTO, userId);
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return ApiResponse.success_only(SuccessStatus.CREATE_COMMENT_SUCCESS);
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}
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@Operation(
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summary = "댓글 조회 API",
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description = "메모에 달린 댓글을 조회합니다."
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)
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@ApiResponses({
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "댓글 조회 성공"),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "400", description = "게시글 ID가 입력되지 않았습니다."),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "404", description = "게시글을 찾을 수 없습니다.")
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})
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@GetMapping
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public ResponseEntity<ApiResponse<List<CommentResponseDTO>>> getCommentsByArticleId(
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@RequestParam Long memoId,
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@AuthenticationPrincipal UserDetails userDetails
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) {
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// 메모 ID 누락시 예외처리
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if (memoId == null) {
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throw new NotFoundException(ErrorStatus.MISSING_COMMENT_MEMOID.getMessage());
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}
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List<CommentResponseDTO> comments = commentService.getCommentsByMemoId(memoId,userDetails);
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return ApiResponse.success(SuccessStatus.SEND_COMMENT_SUCCESS, comments);
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}
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@Operation(
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summary = "댓글 수정 API",
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description = "게시글에 달린 댓글을 수정합니다.")
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@ApiResponses({
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "댓글 수정 성공"),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "400", description = "댓글 ID가 입력되지 않았습니다. / 댓글이 입력되지 않았습니다."),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "404", description = "댓글을 찾을 수 없습니다."),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "401", description = "수정 권한이 없습니다.")
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})
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@PatchMapping("/{commentId}")
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public ResponseEntity<ApiResponse<Void>> updateComment(
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@PathVariable Long commentId,
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@RequestBody CommentUpdateDTO commentUpdateDTO,
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@AuthenticationPrincipal UserDetails userDetails
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) {
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//댓글 ID 누락시 예외처리
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if (commentId == null) {
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throw new NotFoundException(ErrorStatus.MISSING_COMMENT_ID.getMessage());
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}
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// Comment 누락시 예외처리
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if (commentUpdateDTO.getComment() == null || commentUpdateDTO.getComment().isEmpty()) {
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throw new NotFoundException(ErrorStatus.MISSING_COMMENT.getMessage());
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}
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Long userId = memberService.getUserIdByEmail(userDetails.getUsername());
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commentService.updateComment(commentId, commentUpdateDTO, userId);
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return ApiResponse.success_only(SuccessStatus.MODIFY_COMMENT_SUCCESS);
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}
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@Operation(
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summary = "댓글 삭제 API",
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description = "메모에 달린 댓글을 삭제합니다.")
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@ApiResponses({
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "댓글 삭제 성공"),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "400", description = "댓글 ID가 입력되지 않았습니다."),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "404", description = "댓글을 찾을 수 없습니다."),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "40₩", description = "삭제 권한이 없습니다.")
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})
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@DeleteMapping("/{commentId}")
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public ResponseEntity<ApiResponse<Void>> deleteComment(
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@PathVariable Long commentId,
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@AuthenticationPrincipal UserDetails userDetails
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) {
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//댓글 ID 누락시 예외처리
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if (commentId == null) {
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throw new NotFoundException(ErrorStatus.MISSING_COMMENT_ID.getMessage());
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}
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Long userId = memberService.getUserIdByEmail(userDetails.getUsername());
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commentService.deleteComment(commentId, userId);
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return ApiResponse.success_only(SuccessStatus.DELETE_COMMENT_SUCCESS);
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}
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@Operation(
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summary = "댓글 좋아요 토글 API",
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description = "특정 댓글에 좋아요를 누르거나 취소합니다."
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)
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@ApiResponses({
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "200", description = "좋아요 토글 성공"),
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@io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "404", description = "해당 게시글을 찾을 수 없습니다."),
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})
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@PostMapping("/like/{commentId}")
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public ResponseEntity<ApiResponse<Void>> toggleLike(
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@PathVariable Long commentId,
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@AuthenticationPrincipal UserDetails userDetails
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) {
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Long userId = memberService.getUserIdByEmail(userDetails.getUsername());
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commentService.toggleLike(commentId, userId);
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return ApiResponse.success_only(SuccessStatus.TOGGLE_LIKE_SUCCESS);
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}
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/dto/CommentCreateDTO.java‎

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package com.rhkr8521.mapping.api.comment.dto;
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import lombok.Builder;
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import lombok.Getter;
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@Getter
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@Builder
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public class CommentCreateDTO {
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private String comment;
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private Long memoId;
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private int rating;
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/dto/CommentResponseDTO.java‎

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package com.rhkr8521.mapping.api.comment.dto;
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import com.rhkr8521.mapping.api.comment.entity.Comment;
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import lombok.Builder;
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import lombok.Getter;
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import java.time.format.DateTimeFormatter;
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@Getter
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@Builder
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public class CommentResponseDTO {
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private Long id;
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private String comment;
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private int rating;
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private int likeCnt;
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private String nickname;
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private String profileImageUrl;
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private String updatedAt;
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private boolean myLike;
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public static CommentResponseDTO fromEntity(Comment comment, boolean myLike) {
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DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy:MM:dd HH:mm:ss");
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return CommentResponseDTO.builder()
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.id(comment.getId())
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.comment(comment.getComment())
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.rating(comment.getRating())
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.likeCnt(comment.getLikeCnt())
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.nickname(comment.getMember().getNickname())
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.profileImageUrl(comment.getMember().getImageUrl())
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.updatedAt(comment.getUpdatedAt().format(dateTimeFormatter))
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.myLike(myLike)
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.build();
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}
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/dto/CommentUpdateDTO.java‎

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package com.rhkr8521.mapping.api.comment.dto;
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import lombok.AllArgsConstructor;
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import lombok.Builder;
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import lombok.Getter;
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import lombok.NoArgsConstructor;
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@Getter
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@Builder
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@NoArgsConstructor
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@AllArgsConstructor
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public class CommentUpdateDTO {
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private String comment;
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private int rating;
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/entity/Comment.java‎

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package com.rhkr8521.mapping.api.comment.entity;
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import com.rhkr8521.mapping.api.member.entity.Member;
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import com.rhkr8521.mapping.api.memo.entity.Memo;
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import com.rhkr8521.mapping.common.entity.BaseTimeEntity;
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import jakarta.persistence.*;
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import lombok.*;
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@Getter
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@Builder(toBuilder = true)
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@NoArgsConstructor(access = AccessLevel.PROTECTED)
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@AllArgsConstructor(access = AccessLevel.PROTECTED)
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@Entity
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@Table(name = "comment")
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public class Comment extends BaseTimeEntity {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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@Column(name = "comment_id")
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private Long id;
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@Column(columnDefinition = "TEXT")
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private String comment;
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private int rating;
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private int likeCnt;
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@ManyToOne(fetch = FetchType.LAZY)
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@JoinColumn(name = "memo_id")
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private Memo memo;
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@ManyToOne(fetch = FetchType.LAZY)
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@JoinColumn(name = "user_id")
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private Member member;
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// 좋아요 증가
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public Comment increaseLikeCnt() {
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return this.toBuilder()
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.likeCnt(this.likeCnt + 1)
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.build();
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}
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// 좋아요 감소
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public Comment decreaseLikeCnt() {
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return this.toBuilder()
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.likeCnt(this.likeCnt - 1)
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.build();
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}
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/entity/CommentLike.java‎

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package com.rhkr8521.mapping.api.comment.entity;
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import com.rhkr8521.mapping.api.member.entity.Member;
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import jakarta.persistence.*;
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import lombok.*;
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@Getter
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@NoArgsConstructor(access = AccessLevel.PROTECTED)
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@AllArgsConstructor
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@Entity
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@Table(name = "comment_like")
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@Builder
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public class CommentLike {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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@Column(name = "comment_like_id")
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private Long id;
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@ManyToOne(fetch = FetchType.LAZY)
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@JoinColumn(name = "comment_id")
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private Comment comment;
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@ManyToOne(fetch = FetchType.LAZY)
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@JoinColumn(name = "user_id")
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private Member member;
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/repository/CommentLikeRepository.java‎

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package com.rhkr8521.mapping.api.comment.repository;
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import com.rhkr8521.mapping.api.comment.entity.CommentLike;
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import org.springframework.data.jpa.repository.JpaRepository;
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import java.util.Optional;
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public interface CommentLikeRepository extends JpaRepository<CommentLike, Long> {
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Optional<CommentLike> findByCommentIdAndMemberId(Long commentId, Long memberId);
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}

‎src/main/java/com/rhkr8521/mapping/api/comment/repository/CommentRepository.java‎

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package com.rhkr8521.mapping.api.comment.repository;
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import com.rhkr8521.mapping.api.comment.entity.Comment;
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import com.rhkr8521.mapping.api.memo.entity.Memo;
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import org.springframework.data.jpa.repository.JpaRepository;
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import java.util.List;
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public interface CommentRepository extends JpaRepository<Comment, Long> {
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List<Comment> findByMemo(Memo memo);
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}

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