Merge pull request #98 from cvs-go/feature#97

상품 좋아요 태그 조회 추가
cvs-go · Sep 6, 2023 · 86b4bab · 86b4bab
2 parents 446cbbf + 1b0a702
commit 86b4bab
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Showing 11 changed files with 310 additions and 41 deletions.
diff --git a/src/docs/asciidoc/api-doc.adoc b/src/docs/asciidoc/api-doc.adoc
@@ -210,7 +210,23 @@ include::{snippets}/product-controller-test/respond_200_when_read_product_succes
 | `404 NOT FOUND` | `NOT_FOUND_PRODUCT` | 해당하는 상품이 없는 경우
 |===
 
-=== 3-4. 상품 좋아요 생성
+=== 3-4. 특정 상품 좋아요 태그 조회
+==== Path Parameters
+include::{snippets}/product-controller-test/respond_200_when_read_product_like_tags_successfully/path-parameters.adoc[]
+==== Sample Request
+include::{snippets}/product-controller-test/respond_200_when_read_product_like_tags_successfully/http-request.adoc[]
+==== Response Fields
+include::{snippets}/product-controller-test/respond_200_when_read_product_like_tags_successfully/response-fields.adoc[]
+==== Sample Response
+include::{snippets}/product-controller-test/respond_200_when_read_product_like_tags_successfully/http-response.adoc[]
+==== Error Response
+|===
+| HTTP Status | Error Code | Detail
+
+| `404 NOT FOUND` | `NOT_FOUND_PRODUCT` | 해당하는 상품이 없는 경우
+|===
+
+=== 3-5. 상품 좋아요 생성
 ==== Path Parameters
 include::{snippets}/product-controller-test/respond_201_when_create_product_like_succeed/path-parameters.adoc[]
 ==== Sample Request
@@ -225,7 +241,7 @@ include::{snippets}/product-controller-test/respond_201_when_create_product_like
 | `409 CONFLICT` | `DUPLICATE_PRODUCT_LIKE` | 해당하는 상품 좋아요가 이미 있는 경우
 |===
 
-=== 3-5. 상품 좋아요 삭제
+=== 3-6. 상품 좋아요 삭제
 ==== Path Parameters
 include::{snippets}/product-controller-test/respond_200_when_delete_product_like_succeed/path-parameters.adoc[]
 ==== Sample Request
@@ -240,7 +256,7 @@ include::{snippets}/product-controller-test/respond_200_when_delete_product_like
 | `404 NOT FOUND` | `NOT_FOUND_PRODUCT_LIKE` | 해당하는 상품 좋아요가 없는 경우
 |===
 
-=== 3-6. 상품 북마크 생성
+=== 3-7. 상품 북마크 생성
 ==== Path Parameters
 include::{snippets}/product-controller-test/respond_201_when_create_product_bookmark_succeed/path-parameters.adoc[]
 ==== Sample Request
@@ -255,7 +271,7 @@ include::{snippets}/product-controller-test/respond_201_when_create_product_book
 | `409 CONFLICT` | `DUPLICATE_PRODUCT_BOOKMARK` | 해당하는 상품 북마크가 이미 있는 경우
 |===
 
-=== 3-7. 상품 북마크 삭제
+=== 3-8. 상품 북마크 삭제
 ==== Path Parameters
 include::{snippets}/product-controller-test/respond_200_when_delete_product_bookmark_succeed/path-parameters.adoc[]
 ==== Sample Request

diff --git a/src/main/java/com/cvsgo/config/WebConfig.java b/src/main/java/com/cvsgo/config/WebConfig.java
@@ -30,6 +30,6 @@ public void addInterceptors(InterceptorRegistry registry) {
             .addPathPatterns("/**")
             .excludePathPatterns("/", "/docs/**", "/*.ico", "/api/auth/login", "/api/users",
                 "/api/tags", "/api/users/emails/*/exists", "/api/users/nicknames/*/exists",
-                "/api/products", "/api/products/*");
+                "/api/products", "/api/products/*", "/api/products/*/tags");
     }
 }
diff --git a/src/main/java/com/cvsgo/controller/ProductController.java b/src/main/java/com/cvsgo/controller/ProductController.java
@@ -2,12 +2,14 @@
 
 import com.cvsgo.argumentresolver.LoginUser;
 import com.cvsgo.dto.SuccessResponse;
+import com.cvsgo.dto.product.ReadProductLikeTagResponseDto;
 import com.cvsgo.dto.product.ReadProductDetailResponseDto;
 import com.cvsgo.dto.product.ReadProductFilterResponseDto;
 import com.cvsgo.dto.product.ReadProductRequestDto;
 import com.cvsgo.dto.product.ReadProductResponseDto;
 import com.cvsgo.entity.User;
 import com.cvsgo.service.ProductService;
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.data.domain.Page;
@@ -42,6 +44,12 @@ public SuccessResponse<ReadProductDetailResponseDto> readProduct(@LoginUser User
         return SuccessResponse.from(productService.readProduct(user, productId));
     }
 
+    @GetMapping("/{productId}/tags")
+    public SuccessResponse<List<ReadProductLikeTagResponseDto>> readProductLikeTags(
+        @PathVariable Long productId) {
+        return SuccessResponse.from(productService.readProductLikeTags(productId));
+    }
+
     @PostMapping("/{productId}/likes")
     @ResponseStatus(HttpStatus.CREATED)
     public SuccessResponse<Void> createProductLike(@LoginUser User user,

diff --git a/src/main/java/com/cvsgo/dto/product/ReadProductLikeTagResponseDto.java b/src/main/java/com/cvsgo/dto/product/ReadProductLikeTagResponseDto.java
@@ -0,0 +1,19 @@
+package com.cvsgo.dto.product;
+
+import com.querydsl.core.annotations.QueryProjection;
+import lombok.Getter;
+
+@Getter
+public class ReadProductLikeTagResponseDto {
+
+    private final Long id;
+    private final String name;
+    private final Long tagCount;
+
+    @QueryProjection
+    public ReadProductLikeTagResponseDto(Long id, String name, Long tagCount) {
+        this.id = id;
+        this.name = name;
+        this.tagCount = tagCount;
+    }
+}
diff --git a/src/main/java/com/cvsgo/repository/TagCustomRepository.java b/src/main/java/com/cvsgo/repository/TagCustomRepository.java
@@ -0,0 +1,11 @@
+package com.cvsgo.repository;
+
+import com.cvsgo.dto.product.ReadProductLikeTagResponseDto;
+import com.cvsgo.entity.Product;
+import java.util.List;
+
+public interface TagCustomRepository {
+
+    List<ReadProductLikeTagResponseDto> findTop3ByProduct(Product product);
+
+}
diff --git a/src/main/java/com/cvsgo/repository/TagCustomRepositoryImpl.java b/src/main/java/com/cvsgo/repository/TagCustomRepositoryImpl.java
@@ -0,0 +1,37 @@
+package com.cvsgo.repository;
+
+import static com.cvsgo.entity.QProductLike.productLike;
+import static com.cvsgo.entity.QTag.tag;
+import static com.cvsgo.entity.QUserTag.userTag;
+
+import com.cvsgo.dto.product.QReadProductLikeTagResponseDto;
+import com.cvsgo.dto.product.ReadProductLikeTagResponseDto;
+import com.cvsgo.entity.Product;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Repository;
+
+@RequiredArgsConstructor
+@Repository
+public class TagCustomRepositoryImpl implements TagCustomRepository {
+
+    private final JPAQueryFactory queryFactory;
+
+    public List<ReadProductLikeTagResponseDto> findTop3ByProduct(Product product) {
+        return queryFactory.select(new QReadProductLikeTagResponseDto(
+                userTag.tag.id,
+                userTag.tag.name,
+                userTag.tag.count()
+            ))
+            .from(userTag)
+            .join(userTag.tag, tag)
+            .join(productLike).on(productLike.user.eq(userTag.user))
+            .where(productLike.product.eq(product))
+            .groupBy(userTag.tag.id, userTag.tag.name)
+            .orderBy(userTag.tag.count().desc())
+            .limit(3)
+            .fetch();
+    }
+
+}
diff --git a/src/main/java/com/cvsgo/repository/TagRepository.java b/src/main/java/com/cvsgo/repository/TagRepository.java
@@ -3,6 +3,6 @@
 import com.cvsgo.entity.Tag;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface TagRepository extends JpaRepository<Tag, Long> {
+public interface TagRepository extends JpaRepository<Tag, Long>, TagCustomRepository {
 
 }
diff --git a/src/main/java/com/cvsgo/service/ProductService.java b/src/main/java/com/cvsgo/service/ProductService.java
@@ -12,6 +12,7 @@
 import com.cvsgo.dto.product.ConvenienceStoreEventDto;
 import com.cvsgo.dto.product.ConvenienceStoreEventQueryDto;
 import com.cvsgo.dto.product.EventTypeDto;
+import com.cvsgo.dto.product.ReadProductLikeTagResponseDto;
 import com.cvsgo.dto.product.ReadUserProductRequestDto;
 import com.cvsgo.dto.product.ReadProductDetailQueryDto;
 import com.cvsgo.dto.product.ReadProductDetailResponseDto;
@@ -31,6 +32,7 @@
 import com.cvsgo.repository.ProductBookmarkRepository;
 import com.cvsgo.repository.ProductLikeRepository;
 import com.cvsgo.repository.ProductRepository;
+import com.cvsgo.repository.TagRepository;
 import com.cvsgo.repository.UserRepository;
 import java.util.Arrays;
 import java.util.List;
@@ -50,6 +52,7 @@ public class ProductService {
     private final ProductRepository productRepository;
     private final CategoryRepository categoryRepository;
     private final ConvenienceStoreRepository convenienceStoreRepository;
+    private final TagRepository tagRepository;
     private final ProductLikeRepository productLikeRepository;
     private final ProductBookmarkRepository productBookmarkRepository;
     private final UserRepository userRepository;
@@ -89,6 +92,21 @@ public ReadProductDetailResponseDto readProduct(User user, Long productId) {
             getConvenienceStoreEvents(convenienceStoreEvents));
     }
 
+    /**
+     * 상품 ID를 통해 특정 상품에 좋아요 한 유저의 상위 3개 태그를 조회한다.
+     *
+     * @param productId 상품 ID
+     * @return 태그 정보
+     * @throws NotFoundException 해당하는 아이디를 가진 상품이 없는 경우
+     */
+    @Transactional(readOnly = true)
+    public List<ReadProductLikeTagResponseDto> readProductLikeTags(Long productId) {
+        Product product = productRepository.findById(productId)
+            .orElseThrow(() -> NOT_FOUND_PRODUCT);
+
+        return tagRepository.findTop3ByProduct(product);
+    }
+
     /**
      * 상품 좋아요를 생성한다.
      *

diff --git a/src/test/java/com/cvsgo/controller/ProductControllerTest.java b/src/test/java/com/cvsgo/controller/ProductControllerTest.java
@@ -35,6 +35,7 @@
 import com.cvsgo.dto.product.ReadProductDetailQueryDto;
 import com.cvsgo.dto.product.ReadProductDetailResponseDto;
 import com.cvsgo.dto.product.ReadProductFilterResponseDto;
+import com.cvsgo.dto.product.ReadProductLikeTagResponseDto;
 import com.cvsgo.dto.product.ReadProductQueryDto;
 import com.cvsgo.dto.product.ReadProductRequestDto;
 import com.cvsgo.dto.product.ReadProductResponseDto;
@@ -49,6 +50,7 @@
 import com.cvsgo.entity.Product;
 import com.cvsgo.entity.ProductBookmark;
 import com.cvsgo.entity.ProductLike;
+import com.cvsgo.entity.Tag;
 import com.cvsgo.entity.User;
 import com.cvsgo.interceptor.AuthInterceptor;
 import com.cvsgo.service.ProductService;
@@ -188,6 +190,40 @@ void respond_404_when_read_product_but_product_does_not_exist() throws Exception
             .andDo(print());
     }
 
+    @Test
+    @DisplayName("상품 좋아요 태그를 정상적으로 조회하면 HTTP 200을 응답한다")
+    void respond_200_when_read_product_like_tags_successfully() throws Exception {
+        given(productService.readProductLikeTags(any())).willReturn(getProductLikeTagsResponse());
+
+        mockMvc.perform(RestDocumentationRequestBuilders.get("/api/products/{productId}/tags", 1L)
+                .contentType(MediaType.APPLICATION_JSON))
+            .andExpect(status().isOk())
+            .andDo(print())
+            .andDo(document(documentIdentifier,
+                getDocumentRequest(),
+                getDocumentResponse(),
+                pathParameters(
+                    parameterWithName("productId").description("상품 ID")
+                ),
+                relaxedResponseFields(
+                    fieldWithPath("data.id").type(JsonFieldType.NUMBER).description("태그 ID").optional(),
+                    fieldWithPath("data.name").type(JsonFieldType.STRING).description("태그 이름").optional(),
+                    fieldWithPath("data.tagCount").type(JsonFieldType.NUMBER).description("태그 수").optional()
+                )
+            ));
+    }
+
+    @Test
+    @DisplayName("상품 좋아요 태그 조회 시 해당 ID를 가진 상품이 존재하지 않으면 HTTP 404를 응답한다")
+    void respond_404_when_read_product_like_tags_but_product_does_not_exist() throws Exception {
+        given(productService.readProductLikeTags(any())).willThrow(NOT_FOUND_PRODUCT);
+
+        mockMvc.perform(get("/api/products/{productId}/tags", 1000L)
+                .contentType(MediaType.APPLICATION_JSON))
+            .andExpect(status().isNotFound())
+            .andDo(print());
+    }
+
     @Test
     @DisplayName("상품 좋아요 생성에 성공하면 HTTP 201을 응답한다")
     void respond_201_when_create_product_like_succeed() throws Exception {
@@ -403,6 +439,21 @@ void respond_200_when_read_product_filter_successfully() throws Exception {
         .name("농심")
         .build();
 
+    Tag tag1 = Tag.builder()
+        .id(1L)
+        .name("맵부심")
+        .build();
+
+    Tag tag2 = Tag.builder()
+        .id(2L)
+        .name("다이어터")
+        .build();
+
+    Tag tag3 = Tag.builder()
+        .id(3L)
+        .name("초코러버")
+        .build();
+
     Product product1 = Product.builder()
         .id(1L)
         .name("아이시스 500ml")
@@ -501,6 +552,20 @@ private ReadProductDetailResponseDto getProductResponse() {
         return ReadProductDetailResponseDto.of(productDetailQueryDto, convenienceStoreEvents);
     }
 
+    private List<ReadProductLikeTagResponseDto> getProductLikeTagsResponse() {
+        ReadProductLikeTagResponseDto productLikeTagResponseDto1 = new ReadProductLikeTagResponseDto(
+            tag1.getId(), tag1.getName(), 215L
+        );
+        ReadProductLikeTagResponseDto productLikeTagResponseDto2 = new ReadProductLikeTagResponseDto(
+            tag2.getId(), tag2.getName(), 163L
+        );
+        ReadProductLikeTagResponseDto productLikeTagResponseDto3 = new ReadProductLikeTagResponseDto(
+            tag3.getId(), tag3.getName(), 71L
+        );
+
+        return List.of(productLikeTagResponseDto1, productLikeTagResponseDto2, productLikeTagResponseDto3);
+    }
+
     private ReadProductFilterResponseDto getProductFilterResponse() {
         List<ConvenienceStoreDto> convenienceStores = List.of(
             ConvenienceStoreDto.from(cvs1), ConvenienceStoreDto.from(cvs2),