remove favorite

src/main/java/io/spring/api/ArticleFavoriteApi.java

@@ -11,6 +11,7 @@ import io.spring.core.user.User;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -43,8 +44,18 @@ public class ArticleFavoriteApi {
         return responseArticleData(articleQueryService.findBySlug(slug, user).get());
     }
 
+    @DeleteMapping
+    public ResponseEntity unfavoriteArticle(@PathVariable("slug") String slug,
+                                            @AuthenticationPrincipal User user) {
+        Article article = getArticle(slug);
+        articleFavoriteRepository.find(article.getId(), user.getId()).ifPresent(favorite -> {
+            articleFavoriteRepository.remove(favorite);
+        });
+        return responseArticleData(articleQueryService.findBySlug(slug, user).get());
+    }
+
     private ResponseEntity<HashMap<String, Object>> responseArticleData(final ArticleData articleData) {
-        return ResponseEntity.status(201).body(new HashMap<String, Object>() {{
+        return ResponseEntity.ok(new HashMap<String, Object>() {{
             put("article", articleData);
         }});
     }

src/main/java/io/spring/core/favorite/ArticleFavoriteRepository.java

@@ -1,5 +1,11 @@
 package io.spring.core.favorite;
 
+import java.util.Optional;
+
 public interface ArticleFavoriteRepository {
     void save(ArticleFavorite articleFavorite);
+
+    Optional<ArticleFavorite> find(String articleId, String userId);
+
+    void remove(ArticleFavorite favorite);
 }

src/main/java/io/spring/infrastructure/favorite/ArticleFavoriteMapper.java

@@ -8,7 +8,9 @@ import org.springframework.stereotype.Component;
 @Mapper
 @Component
 public interface ArticleFavoriteMapper {
-    boolean find(@Param("articleFavorite") ArticleFavorite articleFavorite);
+    ArticleFavorite find(@Param("articleId") String articleId, @Param("userId") String userId);
 
     void insert(@Param("articleFavorite") ArticleFavorite articleFavorite);
+
+    void delete(@Param("favorite") ArticleFavorite favorite);
 }

src/main/java/io/spring/infrastructure/favorite/MyBatisArticleFavoriteRepository.java

@@ -5,6 +5,8 @@ import io.spring.core.favorite.ArticleFavoriteRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
 
+import java.util.Optional;
+
 @Repository
 public class MyBatisArticleFavoriteRepository implements ArticleFavoriteRepository {
     private ArticleFavoriteMapper mapper;
@@ -16,8 +18,18 @@ public class MyBatisArticleFavoriteRepository implements ArticleFavoriteReposito
 
     @Override
     public void save(ArticleFavorite articleFavorite) {
-        if (!mapper.find(articleFavorite)) {
+        if (mapper.find(articleFavorite.getArticleId(), articleFavorite.getUserId()) != null) {
             mapper.insert(articleFavorite);
         }
     }
+
+    @Override
+    public Optional<ArticleFavorite> find(String articleId, String userId) {
+        return Optional.ofNullable(mapper.find(articleId, userId));
+    }
+
+    @Override
+    public void remove(ArticleFavorite favorite) {
+        mapper.delete(favorite);
+    }
 }