[feat] 게시글과 댓글의 좋아요, 좋아요 취소 api 생성

src/main/java/com/newsnack/www/newsnackserver/common/code/failure/ArticleFailureCode.java

@@ -16,7 +16,13 @@ public enum ArticleFailureCode implements FailureCode{
     /**
      * 404 NOT FOUND
      */
-    ARTICLE_NOT_FOUND(HttpStatus.NOT_FOUND, "뉴스를 찾을 수 없습니다");
+    ARTICLE_NOT_FOUND(HttpStatus.NOT_FOUND, "뉴스를 찾을 수 없습니다"),
+    ARTICLE_HEART_NOT_FOUND(HttpStatus.NOT_FOUND, "기사 좋아요가 없습니다"),
+
+    /**
+     * 409 CONFLICT
+     */
+    ARTICLE_HEART_ALREADY_EXISTS(HttpStatus.CONFLICT, "이미 좋아요한 게시물입니다");
 
     private final HttpStatus httpStatus;
     private final String message;

src/main/java/com/newsnack/www/newsnackserver/common/code/failure/CommentFailureCode.java

@@ -17,7 +17,12 @@ public enum CommentFailureCode implements FailureCode{
     /**
      * 404 Not Found
      **/
-    COMMENT_NOT_FOUND(HttpStatus.NOT_FOUND, "댓글을 찾을 수 없습니다");
+    COMMENT_NOT_FOUND(HttpStatus.NOT_FOUND, "댓글을 찾을 수 없습니다"),
+    COMMENT_LIKE_NOT_FOUND(HttpStatus.NOT_FOUND, "댓글 좋아요가 없습니다."),
+    /**
+     * 409 Conflict
+     **/
+    COMMENT_HEART_ALREADY_EXISTS(HttpStatus.CONFLICT, "이미 좋아요한 댓글입니다");
 
     private final HttpStatus httpStatus;
     private final String message;

src/main/java/com/newsnack/www/newsnackserver/common/code/success/ArticleSuccessCode.java

@@ -11,7 +11,15 @@ public enum ArticleSuccessCode implements SuccessCode{
     /**
      * 200 OK
      **/
-    GET_ARTICLES_SUCCESS(HttpStatus.OK, "기사 조회에 성공했습니다");
+    GET_ARTICLES_SUCCESS(HttpStatus.OK, "기사 조회에 성공했습니다"),
+    /**
+     * 201 Created
+     **/
+    ARTICLE_LIKE_SUCCESS(HttpStatus.OK, "기사 좋아요 성공"),
+    /**
+     * 204 No Content
+     **/
+    ARTICLE_LIKE_CANCEL_SUCCESS(HttpStatus.OK, "기사 좋아요 취소 성공");
 
     private final HttpStatus httpStatus;
     private final String message;

src/main/java/com/newsnack/www/newsnackserver/common/code/success/CommentSuccessCode.java

@@ -15,12 +15,13 @@ public enum CommentSuccessCode implements SuccessCode{
      * 201 Created
      **/
     COMMENT_CREATED(HttpStatus.CREATED, "댓글 작성 성공"),
-
+    COMMENT_LIKE_SUCCESS(HttpStatus.CREATED, "댓글 좋아요 성공"),
     /**
      * 204 No Content
      **/
     COMMENT_DELETED_SUCCESS(HttpStatus.NO_CONTENT, "댓글 삭제 성공"),
-    COMMENT_UPDATED(HttpStatus.NO_CONTENT, "댓글 수정 성공");
+    COMMENT_UPDATED(HttpStatus.NO_CONTENT, "댓글 수정 성공"),
+    COMMENT_LIKE_CANCEL_SUCCESS(HttpStatus.NO_CONTENT, "댓글 좋아요 취소 성공");
 
     private final HttpStatus httpStatus;
     private final String message;

src/main/java/com/newsnack/www/newsnackserver/common/exception/ArticleException.java

@@ -1,13 +1,15 @@
 package com.newsnack.www.newsnackserver.common.exception;
 
 import com.newsnack.www.newsnackserver.common.code.failure.FailureCode;
+import lombok.Getter;
 
+@Getter
 public class ArticleException extends RuntimeException{
 
     private final FailureCode failureCode;
 
     public ArticleException(FailureCode failureCode) {
-        super("[AuthException] : " + failureCode.getMessage());
+        super("[ArticleException] : " + failureCode.getMessage());
         this.failureCode = failureCode;
     }
 

src/main/java/com/newsnack/www/newsnackserver/common/exception/CommentException.java

@@ -0,0 +1,18 @@
+package com.newsnack.www.newsnackserver.common.exception;
+
+import com.newsnack.www.newsnackserver.common.code.failure.FailureCode;
+import lombok.Getter;
+
+@Getter
+public class CommentException extends RuntimeException {
+    private final FailureCode failureCode;
+
+    public CommentException(FailureCode failureCode) {
+        super("[CommentException] : " + failureCode.getMessage());
+        this.failureCode = failureCode;
+    }
+
+    public int getHttpStatusCode() {
+        return failureCode.getHttpStatus().value();
+    }
+}

src/main/java/com/newsnack/www/newsnackserver/common/handler/NewSnackControllerAdvice.java

@@ -1,8 +1,6 @@
 package com.newsnack.www.newsnackserver.common.handler;
 
-import com.newsnack.www.newsnackserver.common.exception.AuthException;
-import com.newsnack.www.newsnackserver.common.exception.MemberException;
-import com.newsnack.www.newsnackserver.common.exception.NewSnackException;
+import com.newsnack.www.newsnackserver.common.exception.*;
 import com.newsnack.www.newsnackserver.common.response.NewSnackResponse;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
@@ -50,12 +48,28 @@ public ResponseEntity<NewSnackResponse<?>> handleMemberException(MemberException
         return ResponseEntity.status(e.getHttpStatusCode())
                 .body(NewSnackResponse.error(e.getFailureCode()));
     }
+
+    @ExceptionHandler(ArticleException.class)
+    public ResponseEntity<NewSnackResponse<?>> handleMemberException(ArticleException e) {
+        log.info("handleMemberException() in NewSnackControllerAdvice throw MemberException : {}", e.getMessage());
+        return ResponseEntity.status(e.getHttpStatusCode())
+                .body(NewSnackResponse.error(e.getFailureCode()));
+    }
+
+    @ExceptionHandler(CommentException.class)
+    public ResponseEntity<NewSnackResponse<?>> handleCommentException(CommentException e) {
+        log.info("handleCommentException() in NewSnackControllerAdvice throw CommentException : {}", e.getMessage());
+        return ResponseEntity.status(e.getHttpStatusCode())
+                .body(NewSnackResponse.error(e.getFailureCode()));
+    }
+
     @ExceptionHandler(NewSnackException.class)
     public ResponseEntity<NewSnackResponse<?>> handleNewSnackException(NewSnackException e) {
         log.info("handleNewSnackException() in NewSnackControllerAdvice throw NewSnackException : {}", e.getMessage());
         return ResponseEntity.status(e.getHttpStatusCode())
                 .body(NewSnackResponse.error(e.getFailureCode()));
     }
+
     @ExceptionHandler(Exception.class)
     public ResponseEntity<NewSnackResponse<?>> handleException(Exception e) {
         log.error("handleException() in NewSnackControllerAdvice throw Exception : {} ,{}", e.getClass() ,e.getMessage());

src/main/java/com/newsnack/www/newsnackserver/controller/ArticleController.java

@@ -1,16 +1,16 @@
 package com.newsnack.www.newsnackserver.controller;
 
 import com.newsnack.www.newsnackserver.annotation.MemberId;
+import com.newsnack.www.newsnackserver.common.exception.ArticleException;
 import com.newsnack.www.newsnackserver.dto.response.ArticleIndividualResponse;
 import com.newsnack.www.newsnackserver.dto.response.ArticleMainPageResponse;
 import com.newsnack.www.newsnackserver.dto.response.ArticleResponse;
 import com.newsnack.www.newsnackserver.service.ArticleService;
 import com.newsnack.www.newsnackserver.common.code.failure.ArticleFailureCode;
 import com.newsnack.www.newsnackserver.common.code.success.ArticleSuccessCode;
-import com.newsnack.www.newsnackserver.common.exception.NewSnackException;
 import com.newsnack.www.newsnackserver.common.response.NewSnackResponse;
 import com.newsnack.www.newsnackserver.domain.article.model.LocationCategory;
-import com.newsnack.www.newsnackserver.domain.article.model.SearchOrder;
+import com.newsnack.www.newsnackserver.controller.parameter.SearchOrder;
 import com.newsnack.www.newsnackserver.domain.article.model.SectionCategory;
 import lombok.RequiredArgsConstructor;
 import org.springframework.web.bind.annotation.*;
@@ -30,7 +30,7 @@ public NewSnackResponse<List<ArticleResponse>> getArticles(@RequestParam SearchO
                                                                @RequestParam(required = false)SectionCategory sectionCategory,
                                                                @RequestParam(required = false)LocationCategory locationCategory) {
         if (order == null || page < 0 || (sectionCategory != null && locationCategory != null) ) {
-            throw new NewSnackException(ArticleFailureCode.INVALID_PARAMETER);
+            throw new ArticleException(ArticleFailureCode.INVALID_PARAMETER);
         }
         return NewSnackResponse.success(ArticleSuccessCode.GET_ARTICLES_SUCCESS, articleService.getArticles(order, sectionCategory, locationCategory, page));
     }
@@ -44,4 +44,15 @@ public NewSnackResponse<ArticleIndividualResponse> getArticle(@PathVariable Long
     public NewSnackResponse<List<ArticleMainPageResponse>> getMainArticles() {
         return NewSnackResponse.success(ArticleSuccessCode.GET_ARTICLES_SUCCESS, articleService.getMainArticles());
     }
+
+    @PostMapping("/{articleId}/likes")
+    public NewSnackResponse<?> likeArticle(@PathVariable Long articleId, @MemberId Long memberId) {
+            articleService.likeArticle(articleId, memberId);
+            return NewSnackResponse.success(ArticleSuccessCode.ARTICLE_LIKE_SUCCESS);
+    }
+    @DeleteMapping("/{articleId}/likes")
+    public NewSnackResponse<?> deleteArticleLike(@PathVariable Long articleId, @MemberId Long memberId) {
+        articleService.cancelArticleLike(articleId, memberId);
+        return NewSnackResponse.success(ArticleSuccessCode.ARTICLE_LIKE_CANCEL_SUCCESS);
+    }
 }

src/main/java/com/newsnack/www/newsnackserver/controller/CommentController.java

@@ -3,7 +3,7 @@
 import com.newsnack.www.newsnackserver.annotation.MemberId;
 import com.newsnack.www.newsnackserver.common.code.success.CommentSuccessCode;
 import com.newsnack.www.newsnackserver.common.response.NewSnackResponse;
-import com.newsnack.www.newsnackserver.domain.article.model.SearchOrder;
+import com.newsnack.www.newsnackserver.controller.parameter.SearchOrder;
 import com.newsnack.www.newsnackserver.dto.CommentRequest;
 import com.newsnack.www.newsnackserver.dto.response.CommentResponse;
 import com.newsnack.www.newsnackserver.service.CommentService;
@@ -46,4 +46,14 @@ public NewSnackResponse<?> deleteComment(@PathVariable Long commentId, @MemberId
         return NewSnackResponse.success(CommentSuccessCode.COMMENT_DELETED_SUCCESS);
     }
 
+    @PostMapping("/comments/{commentId}/likes")//comment likecount 갱실 분실 문제 해결하기
+    public NewSnackResponse<?> likeComment(@PathVariable Long commentId, @MemberId Long memberId) {
+        commentService.likeComment(commentId, memberId);
+        return NewSnackResponse.success(CommentSuccessCode.COMMENT_LIKE_SUCCESS);
+    }
+    @DeleteMapping("/comments/{commentId}/likes")//나중에 comment에 likecount 넣게 되면 -> comment.likecount++-- 하고 동시성 해결하기.
+    public NewSnackResponse<?> cancelCommentLike(@PathVariable Long commentId, @MemberId Long memberId) {
+        commentService.cancelCommentLike(commentId, memberId);
+        return NewSnackResponse.success(CommentSuccessCode.COMMENT_LIKE_CANCEL_SUCCESS);
+    }
 }

src/main/java/com/newsnack/www/newsnackserver/domain/article/model/SearchOrder.java → src/main/java/com/newsnack/www/newsnackserver/controller/parameter/SearchOrder.java

@@ -1,4 +1,4 @@
-package com.newsnack.www.newsnackserver.domain.article.model;
+package com.newsnack.www.newsnackserver.controller.parameter;
 
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;

src/main/java/com/newsnack/www/newsnackserver/domain/article/model/Article.java

@@ -5,7 +5,6 @@
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import org.hibernate.annotations.Formula;
 
 @Entity
 @Getter
@@ -30,6 +29,13 @@ public class Article extends BaseTimeEntity {
     @Enumerated(EnumType.STRING)
     private LocationCategory locationCategory;
 
-    @Formula("(select count(*) from article_heart where article_heart.article_id = id)")
     private int heartCount;
+
+    public void increaseHeartCount() {
+        this.heartCount++;
+    }
+
+    public void decreaseHeartCount() {
+        this.heartCount--;
+    }
 }

src/main/java/com/newsnack/www/newsnackserver/domain/articleheart/model/ArticleHeart.java

@@ -4,6 +4,7 @@
 import com.newsnack.www.newsnackserver.domain.member.model.Member;
 import jakarta.persistence.*;
 import lombok.AccessLevel;
+import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
@@ -23,4 +24,10 @@ public class ArticleHeart {
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "article_id")
     private Article article;
+
+    @Builder
+    public ArticleHeart(Member member, Article article) {
+        this.member = member;
+        this.article = article;
+    }
 }

src/main/java/com/newsnack/www/newsnackserver/domain/articleheart/repository/ArticleHeartJpaRepository.java

@@ -1,8 +1,13 @@
 package com.newsnack.www.newsnackserver.domain.articleheart.repository;
 
+import com.newsnack.www.newsnackserver.domain.article.model.Article;
 import com.newsnack.www.newsnackserver.domain.articleheart.model.ArticleHeart;
+import com.newsnack.www.newsnackserver.domain.member.model.Member;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.Optional;
+
 public interface ArticleHeartJpaRepository extends JpaRepository<ArticleHeart, Long> {
     boolean existsByArticleIdAndMemberId(Long articleId, Long memberId);
+    Optional<ArticleHeart> findByArticleAndMember(Article article, Member member);
 }

src/main/java/com/newsnack/www/newsnackserver/domain/comment/model/Comment.java

@@ -9,7 +9,6 @@
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import org.hibernate.annotations.Formula;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -36,7 +35,6 @@ public class Comment extends BaseTimeEntity {
 
     private String content;
 
-    @Formula("(select count(*) from comment_heart where comment_heart.comment_id = id)")
     private int heartCount;
 
     @Builder
@@ -46,6 +44,14 @@ public Comment(Article article, Member member, String content) {
         this.content = content;
     }
 
+    public void increaseHeartCount() {
+        this.heartCount++;
+    }
+
+    public void decreaseHeartCount() {
+        this.heartCount--;
+    }
+
     public void updateContent(String content) {
         this.content = content;
     }

src/main/java/com/newsnack/www/newsnackserver/domain/commentheart/model/CommentHeart.java

@@ -5,6 +5,7 @@
 import com.newsnack.www.newsnackserver.domain.member.model.Member;
 import jakarta.persistence.*;
 import lombok.AccessLevel;
+import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
@@ -24,4 +25,10 @@ public class CommentHeart extends BaseTimeEntity {
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "member_id")
     private Member member;
+
+    @Builder
+    public CommentHeart(Comment comment, Member member) {
+        this.comment = comment;
+        this.member = member;
+    }
 }

src/main/java/com/newsnack/www/newsnackserver/domain/commentheart/repository/CommentHeartJpaRepository.java

@@ -1,7 +1,12 @@
 package com.newsnack.www.newsnackserver.domain.commentheart.repository;
 
+import com.newsnack.www.newsnackserver.domain.comment.model.Comment;
 import com.newsnack.www.newsnackserver.domain.commentheart.model.CommentHeart;
+import com.newsnack.www.newsnackserver.domain.member.model.Member;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.Optional;
+
 public interface CommentHeartJpaRepository extends JpaRepository<CommentHeart, Long> {
+    Optional<CommentHeart> findByCommentAndMember(Comment comment, Member member);
 }

src/main/java/com/newsnack/www/newsnackserver/service/ArticleService.java

@@ -3,12 +3,15 @@
 import com.newsnack.www.newsnackserver.common.code.failure.ArticleFailureCode;
 import com.newsnack.www.newsnackserver.common.exception.ArticleException;
 import com.newsnack.www.newsnackserver.domain.article.model.Article;
+import com.newsnack.www.newsnackserver.domain.articleheart.model.ArticleHeart;
 import com.newsnack.www.newsnackserver.domain.articleheart.repository.ArticleHeartJpaRepository;
+import com.newsnack.www.newsnackserver.domain.member.model.Member;
+import com.newsnack.www.newsnackserver.domain.member.repository.MemberJpaRepository;
 import com.newsnack.www.newsnackserver.dto.response.ArticleIndividualResponse;
 import com.newsnack.www.newsnackserver.dto.response.ArticleMainPageResponse;
 import com.newsnack.www.newsnackserver.dto.response.ArticleResponse;
 import com.newsnack.www.newsnackserver.domain.article.model.LocationCategory;
-import com.newsnack.www.newsnackserver.domain.article.model.SearchOrder;
+import com.newsnack.www.newsnackserver.controller.parameter.SearchOrder;
 import com.newsnack.www.newsnackserver.domain.article.model.SectionCategory;
 import com.newsnack.www.newsnackserver.domain.article.repository.ArticleRepository;
 import lombok.RequiredArgsConstructor;
@@ -28,6 +31,7 @@ public class ArticleService {
 
     private final ArticleRepository articleRepository;
     private final ArticleHeartJpaRepository articleHeartJpaRepository;
+    private final MemberJpaRepository memberJpaRepository;
 
     public List<ArticleResponse> getArticles(SearchOrder order, SectionCategory sectionCategory, LocationCategory locationCategory, Integer page) {
 
@@ -67,4 +71,35 @@ public List<ArticleMainPageResponse> getMainArticles() {
         LocalDateTime oneWeekAgo = LocalDateTime.now().minusDays(7);
         return articleRepository.findTop5ByCreatedAtAfterOrderByHeartCountDescIdDesc(oneWeekAgo).stream().map(ArticleMainPageResponse::from).collect(Collectors.toList());
     }
+
+    @Transactional
+    public void likeArticle(Long articleId, Long memberId) {
+        Article article = articleRepository.getReferenceById(articleId);
+        Member member = memberJpaRepository.getReferenceById(memberId);
+        articleHeartJpaRepository.findByArticleAndMember(article, member).ifPresentOrElse(
+                (articleHeart) -> {
+                    throw new ArticleException(ArticleFailureCode.ARTICLE_HEART_ALREADY_EXISTS);
+                },
+                () -> {
+                    articleHeartJpaRepository.save(ArticleHeart.builder().member(member).article(article).build());
+                    article.increaseHeartCount();
+                }
+        );
+    }
+
+    @Transactional
+    public void cancelArticleLike(Long articleId, Long memberId) {
+        Article article = articleRepository.getReferenceById(articleId);
+        Member member = memberJpaRepository.getReferenceById(memberId);
+        articleHeartJpaRepository.findByArticleAndMember(article, member).ifPresentOrElse(
+                (articleHeart) -> {
+                    articleHeartJpaRepository.delete(articleHeart);
+                    article.decreaseHeartCount();
+                },
+                () -> {
+                    throw new ArticleException(ArticleFailureCode.ARTICLE_HEART_NOT_FOUND);
+                }
+        );
+    }
 }
+