fix : 게시글 좋아요/상품 좋아요 api bug 수정

src/docs/asciidoc/post-api.adoc

@@ -378,6 +378,9 @@ include::{snippetsDir}/createProductLike/2/http-response.adoc[]
 ==== Request
 include::{snippetsDir}/loadPostProducts/1/http-request.adoc[]
 
+==== Request Query Parameters
+include::{snippetsDir}/loadPostProducts/1/query-parameters.adoc[]
+
 ==== Request Body Parameters
 include::{snippetsDir}/loadPostProducts/1/request-fields.adoc[]
 

src/main/java/com/ftm/server/adapter/in/web/post/dto/response/LoadPostDetailResponse.java

@@ -4,6 +4,7 @@
 import com.ftm.server.application.vo.post.PostDetailVo;
 import com.ftm.server.domain.enums.PostHashtag;
 import java.time.LocalDateTime;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import lombok.Getter;
@@ -33,7 +34,12 @@ private LoadPostDetailResponse(PostDetailVo postDetailVo) {
         this.postId = postDetailVo.getPostId();
         this.title = postDetailVo.getTitle();
         this.content = postDetailVo.getContent();
-        this.hashtags = Arrays.stream(postDetailVo.getHashtags()).map(PostHashtag::getTag).toList();
+        this.hashtags =
+                postDetailVo.getHashtags() == null || postDetailVo.getHashtags().length == 0
+                        ? new ArrayList<>()
+                        : Arrays.stream(postDetailVo.getHashtags())
+                                .map(PostHashtag::getTag)
+                                .toList();
         this.viewCount = postDetailVo.getViewCount();
         this.likeCount = postDetailVo.getLikeCount();
         this.createdAt = postDetailVo.getCreatedAt();

src/main/java/com/ftm/server/adapter/in/web/post/dto/response/PostProductResponse.java

@@ -2,6 +2,7 @@
 
 import com.ftm.server.application.vo.post.PostProductDetailVo;
 import com.ftm.server.domain.enums.ProductHashtag;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import lombok.Getter;
@@ -12,19 +13,26 @@ public class PostProductResponse {
     private final Long postProductId;
     private final String name;
     private final String brand;
+    private final Long recommendedCount;
     private final List<String> hashtags;
     private final PostProductImageResponse postProductImage;
 
     private PostProductResponse(PostProductDetailVo postProductDetailVo) {
         this.postProductId = postProductDetailVo.getPostProductId();
         this.name = postProductDetailVo.getName();
         this.brand = postProductDetailVo.getBrand();
+        this.recommendedCount = postProductDetailVo.getRecommendedCount();
         this.hashtags =
-                Arrays.stream(postProductDetailVo.getHashtags())
-                        .map(ProductHashtag::getTag)
-                        .toList();
+                postProductDetailVo.getHashtags() == null
+                                || postProductDetailVo.getHashtags().length == 0
+                        ? new ArrayList<>()
+                        : Arrays.stream(postProductDetailVo.getHashtags())
+                                .map(ProductHashtag::getTag)
+                                .toList();
         this.postProductImage =
-                PostProductImageResponse.from(postProductDetailVo.getPostProductImage());
+                postProductDetailVo.getPostProductImage() == null
+                        ? null
+                        : PostProductImageResponse.from(postProductDetailVo.getPostProductImage());
     }
 
     public static PostProductResponse from(PostProductDetailVo postProductDetailVo) {

src/main/java/com/ftm/server/adapter/out/persistence/adapter/post/PostDomainPersistenceAdapter.java

@@ -323,6 +323,19 @@ public void updatePostProducts(List<PostProduct> postProducts) {
         }
     }
 
+    @Override
+    public void updatePostProduct(PostProduct postProduct) {
+        PostProductJpaEntity postProductJpaEntity =
+                postProductRepository
+                        .findById(postProduct.getId())
+                        .orElseThrow(
+                                () ->
+                                        new CustomException(
+                                                ErrorResponseCode.POST_PRODUCT_NOT_FOUND));
+
+        postProductJpaEntity.updatePostProductForDomainEntity(postProduct);
+    }
+
     @Override
     public void updatePostProductImages(List<PostProductImage> postProductImages) {
         List<Long> ids = postProductImages.stream().map(PostProductImage::getId).toList();
@@ -444,7 +457,7 @@ public List<LoadProductAndUserLikeVo> findProductLikeByUser(
 
     @Override
     public void deletePostLike(Long postLikeId) {
-        productLikeRepository.deleteById(postLikeId);
+        postLikeRepository.deleteById(postLikeId);
     }
 
     @Override

src/main/java/com/ftm/server/application/port/out/persistence/post/UpdatePostProductPort.java

@@ -8,4 +8,6 @@
 public interface UpdatePostProductPort {
 
     void updatePostProducts(List<PostProduct> postProducts);
+
+    void updatePostProduct(PostProduct postProducts);
 }

src/main/java/com/ftm/server/application/service/post/LoadProductsByHashTagService.java

@@ -97,6 +97,9 @@ public LoadProductsByHashTagVoWrapper execute(
         } else {
             loadProductAndUserLikeVos =
                     loadProductLikePort.findProductLikeByUser(userId, productIds);
+            System.out.println("!!!!!!!!!!!!!!\n\n\\n");
+            System.out.println(loadProductAndUserLikeVos.size());
+            System.out.println(loadProductAndUserLikeVos.get(0));
         }
         Map<Long, LoadProductAndUserLikeVo> productLikeMap =
                 loadProductAndUserLikeVos.stream()

src/main/java/com/ftm/server/application/service/post/product/CreateProductLikeService.java

@@ -1,10 +1,13 @@
 package com.ftm.server.application.service.post.product;
 
 import com.ftm.server.application.port.in.post.CreateProductLikeUseCase;
-import com.ftm.server.application.port.out.persistence.post.DeleteProductLikePort;
-import com.ftm.server.application.port.out.persistence.post.LoadProductLikePort;
-import com.ftm.server.application.port.out.persistence.post.SaveProductLikePort;
+import com.ftm.server.application.port.out.persistence.post.*;
+import com.ftm.server.application.query.FindByIdsQuery;
+import com.ftm.server.common.exception.CustomException;
+import com.ftm.server.common.response.enums.ErrorResponseCode;
+import com.ftm.server.domain.entity.PostProduct;
 import com.ftm.server.domain.entity.ProductLike;
+import java.util.List;
 import java.util.Optional;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -15,12 +18,24 @@
 public class CreateProductLikeService implements CreateProductLikeUseCase {
 
     private final LoadProductLikePort loadProductLikePort;
+    private final LoadPostProductPort loadPostProductPort;
     private final SaveProductLikePort saveProductLikePort;
     private final DeleteProductLikePort deleteProductLikePort;
+    private final UpdatePostProductPort updatePostProductPort;
 
     @Transactional
     public Boolean execute(Long userId, Long productId) {
 
+        PostProduct postProduct =
+                loadPostProductPort
+                        .loadPostProductsByIds(FindByIdsQuery.from(List.of(productId)))
+                        .stream()
+                        .findFirst()
+                        .orElseThrow(
+                                () ->
+                                        new CustomException(
+                                                ErrorResponseCode.POST_PRODUCT_NOT_FOUND));
+
         // 이미 등록된 좋아요 있는지 확인
         Optional<Long> optionalProductLikeId =
                 loadProductLikePort.findOneByUserAndProduct(userId, productId);
@@ -29,12 +44,18 @@ public Boolean execute(Long userId, Long productId) {
         if (optionalProductLikeId.isEmpty()) {
             ProductLike productLike = ProductLike.create(productId, userId);
             saveProductLikePort.saveProductLike(productLike);
+
+            postProduct.plusRecommendedCountByOne();
+            updatePostProductPort.updatePostProduct(postProduct);
             return true;
         }
 
         // 있으면 삭제
         else {
             deleteProductLikePort.deleteProductLike(optionalProductLikeId.get());
+
+            postProduct.minusRecommendedCountByOne();
+            updatePostProductPort.updatePostProduct(postProduct);
             return false;
         }
     }

src/main/java/com/ftm/server/application/vo/post/PostProductDetailVo.java

@@ -18,6 +18,7 @@ public class PostProductDetailVo {
     private final LocalDateTime createdAt;
     private final LocalDateTime updatedAt;
     private final PostProductImage postProductImage;
+    private final Long recommendedCount;
 
     private PostProductDetailVo(PostProduct postProduct, PostProductImage postProductImage) {
         this.postProductId = postProduct.getId();
@@ -27,6 +28,7 @@ private PostProductDetailVo(PostProduct postProduct, PostProductImage postProduc
         this.createdAt = postProduct.getCreatedAt();
         this.updatedAt = postProduct.getUpdatedAt();
         this.postProductImage = postProductImage;
+        this.recommendedCount = postProduct.getRecommendedCount();
     }
 
     public static List<PostProductDetailVo> listFrom(

src/main/java/com/ftm/server/domain/entity/PostProduct.java

@@ -85,4 +85,12 @@ public void validatePost(Long postId) {
             throw new CustomException(ErrorResponseCode.UNAUTHORIZED_POST_PRODUCT_ACCESS);
         }
     }
+
+    public void plusRecommendedCountByOne() {
+        this.recommendedCount += 1;
+    }
+
+    public void minusRecommendedCountByOne() {
+        this.recommendedCount -= 1;
+    }
 }

src/test/java/com/ftm/server/post/LoadPostDetailTest.java

@@ -89,6 +89,9 @@ public class LoadPostDetailTest extends BaseTest {
                     fieldWithPath("data.postProducts[].brand")
                             .type(STRING)
                             .description("게시글 상품 브랜드"),
+                    fieldWithPath("data.postProducts[].recommendedCount")
+                            .type(NUMBER)
+                            .description("게시글 상품 추천수"),
                     fieldWithPath("data.postProducts[].hashtags[]")
                             .type(ARRAY)
                             .description("게시글 상품 해시태그 목록"),