Merge pull request #105 from Seasoning-Today/refactor/reorganize-arti…

…cle-like-services

기록장 좋아요 서비스 로직 분리 및 기록장 좋아요 취소 통합 테스트 작성

src/main/java/today/seasoning/seasoning/article/controller/ArticleController.java

@@ -24,13 +24,14 @@
 import today.seasoning.seasoning.article.dto.FindMyArticlesByYearResponse;
 import today.seasoning.seasoning.article.dto.RegisterArticleRequest;
 import today.seasoning.seasoning.article.dto.UpdateArticleRequest;
-import today.seasoning.seasoning.article.service.ArticleLikeService;
+import today.seasoning.seasoning.article.service.CancelArticleLikeService;
 import today.seasoning.seasoning.article.service.DeleteArticleService;
 import today.seasoning.seasoning.article.service.FindArticleService;
 import today.seasoning.seasoning.article.service.FindCollageService;
 import today.seasoning.seasoning.article.service.FindFriendArticlesService;
 import today.seasoning.seasoning.article.service.FindMyArticlesByTermService;
 import today.seasoning.seasoning.article.service.FindMyArticlesByYearService;
+import today.seasoning.seasoning.article.service.RegisterArticleLikeService;
 import today.seasoning.seasoning.article.service.RegisterArticleService;
 import today.seasoning.seasoning.article.service.UpdateArticleService;
 import today.seasoning.seasoning.common.UserPrincipal;
@@ -47,7 +48,8 @@ public class ArticleController {
     private final DeleteArticleService deleteArticleService;
     private final FindMyArticlesByYearService findMyArticlesByYearService;
     private final FindMyArticlesByTermService findMyArticlesByTermService;
-    private final ArticleLikeService articleLikeService;
+    private final RegisterArticleLikeService registerArticleLikeService;
+    private final CancelArticleLikeService cancelArticleLikeService;
     private final FindCollageService findCollageService;
     private final FindFriendArticlesService findFriendArticlesService;
 
@@ -115,7 +117,7 @@ public ResponseEntity<Void> likeArticle(
         @AuthenticationPrincipal UserPrincipal principal,
         @PathVariable String articleId
     ) {
-        articleLikeService.doLike(principal.getId(), TsidUtil.toLong(articleId));
+        registerArticleLikeService.doService(principal.getId(), TsidUtil.toLong(articleId));
         return ResponseEntity.ok().build();
     }
 
@@ -124,7 +126,7 @@ public ResponseEntity<Void> cancelLikeArticle(
         @AuthenticationPrincipal UserPrincipal principal,
         @PathVariable String articleId
     ) {
-        articleLikeService.cancelLike(principal.getId(), TsidUtil.toLong(articleId));
+        cancelArticleLikeService.doService(principal.getId(), TsidUtil.toLong(articleId));
         return ResponseEntity.ok().build();
     }
 

src/main/java/today/seasoning/seasoning/article/service/CancelArticleLikeService.java

@@ -0,0 +1,24 @@
+package today.seasoning.seasoning.article.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import today.seasoning.seasoning.article.domain.ArticleLikeRepository;
+import today.seasoning.seasoning.common.exception.CustomException;
+
+@Service
+@RequiredArgsConstructor
+public class CancelArticleLikeService {
+
+    private final ArticleLikeRepository articleLikeRepository;
+    private final ValidateArticleLikePolicy validateArticleLikePolicy;
+
+    @Transactional
+    public void doService(Long userId, Long articleId) {
+        if (!validateArticleLikePolicy.validate(userId, articleId)) {
+            throw new CustomException(HttpStatus.FORBIDDEN, "권한 없음");
+        }
+        articleLikeRepository.findByArticleAndUser(articleId, userId).ifPresent(articleLikeRepository::delete);
+    }
+}

src/main/java/today/seasoning/seasoning/article/service/RegisterArticleLikeService.java

@@ -0,0 +1,52 @@
+package today.seasoning.seasoning.article.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import today.seasoning.seasoning.article.domain.Article;
+import today.seasoning.seasoning.article.domain.ArticleLike;
+import today.seasoning.seasoning.article.domain.ArticleLikeRepository;
+import today.seasoning.seasoning.article.domain.ArticleRepository;
+import today.seasoning.seasoning.article.event.ArticleLikedEvent;
+import today.seasoning.seasoning.common.exception.CustomException;
+import today.seasoning.seasoning.user.domain.User;
+import today.seasoning.seasoning.user.domain.UserRepository;
+
+@Service
+@RequiredArgsConstructor
+public class RegisterArticleLikeService {
+
+    private final UserRepository userRepository;
+    private final ArticleRepository articleRepository;
+    private final ArticleLikeRepository articleLikeRepository;
+    private final ValidateArticleLikePolicy validateArticleLikePolicy;
+    private final ApplicationEventPublisher applicationEventPublisher;
+
+    @Transactional
+    public void doService(Long userId, Long articleId) {
+        Article article = articleRepository.findByIdOrElseThrow(articleId);
+        User user = userRepository.findByIdOrElseThrow(userId);
+        User author = article.getUser();
+
+        // 사용자 권한 검증
+        if (!validateArticleLikePolicy.validate(userId, articleId)) {
+            throw new CustomException(HttpStatus.FORBIDDEN, "권한 없음");
+        }
+
+        // 중복 요청의 경우 무시
+        if (articleLikeRepository.findByArticleAndUser(articleId, userId).isPresent()) {
+            return;
+        }
+
+        articleLikeRepository.save(new ArticleLike(article, user));
+
+        // 타인의 글에 좋아요를 누른 경우, 상대방에게 관련 알림 전송
+        if (user != author) {
+            ArticleLikedEvent articleLikedEvent = new ArticleLikedEvent(user.getId(), author.getId(), articleId);
+            applicationEventPublisher.publishEvent(articleLikedEvent);
+        }
+    }
+
+}

src/main/java/today/seasoning/seasoning/article/service/ValidateArticleLikePolicy.java

@@ -0,0 +1,6 @@
+package today.seasoning.seasoning.article.service;
+
+public interface ValidateArticleLikePolicy {
+
+    boolean validate(Long userId, Long articleId);
+}

src/main/java/today/seasoning/seasoning/article/service/ValidateArticleLikePolicyImpl.java

@@ -0,0 +1,32 @@
+package today.seasoning.seasoning.article.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import today.seasoning.seasoning.article.domain.Article;
+import today.seasoning.seasoning.article.domain.ArticleRepository;
+import today.seasoning.seasoning.friendship.domain.FriendshipRepository;
+
+@Component
+@RequiredArgsConstructor
+public class ValidateArticleLikePolicyImpl implements ValidateArticleLikePolicy {
+
+    private final ArticleRepository articleRepository;
+    private final FriendshipRepository friendshipRepository;
+
+    @Override
+    public boolean validate(Long userId, Long articleId) {
+        Article article = articleRepository.findByIdOrElseThrow(articleId);
+        Long authorId = article.getUser().getId();
+
+        // 자신의 글
+        if (authorId.equals(userId)) {
+            return true;
+        }
+        // 공개된 친구의 글
+        if (article.isPublished() && friendshipRepository.existsByUserIdAndFriendId(userId, authorId)) {
+            return true;
+        }
+
+        return false;
+    }
+}