feat:[kakao-tech-campus-2nd-step3#79]- add feed

임시로 랜덤한 페이징을 반환하는 api 구현

src/main/java/com/helpmeCookies/product/controller/ProductController.java

@@ -14,6 +14,7 @@
 import com.helpmeCookies.product.util.ProductSort;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -78,4 +79,12 @@ public ResponseEntity<ProductPage.Paging> getProductsByPage(
 
         return ResponseEntity.ok(productService.getProductsByPage(query, pageable));
     }
+
+    @GetMapping("/feed")
+    public ResponseEntity<ProductPage.Paging> getProductsWithRandomPaging(
+        @RequestParam(name = "size", required = false, defaultValue = "20") int size
+    ) {
+        Pageable pageable = PageRequest.of(0, size);
+        return ResponseEntity.ok(productService.getProductsWithRandomPaging(pageable));
+    }
 }

src/main/java/com/helpmeCookies/product/repository/ProductRepository.java

@@ -20,4 +20,8 @@ public interface ProductRepository extends JpaRepository<Product, Long> {
             "WHERE MATCH(p.name) AGAINST (:query IN BOOLEAN MODE)",
         nativeQuery = true) // Index 사용
     Page<ProductSearch> findByNameWithIdx(@Param("query") String query, Pageable pageable);
+
+
+    @Query("SELECT p FROM Product p ORDER BY FUNCTION('RAND')")
+    Page<ProductSearch> findAllRandom(Pageable pageable);
 }

src/main/java/com/helpmeCookies/product/service/ProductService.java

@@ -10,6 +10,7 @@
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.GetMapping;
 
 @Service
 @RequiredArgsConstructor
@@ -23,6 +24,13 @@ public ProductPage.Paging getProductsByPage(String query, Pageable pageable) {
         return ProductPage.Paging.from(productPage);
     }
 
+    @Transactional
+    @GetMapping
+    public ProductPage.Paging getProductsWithRandomPaging(Pageable pageable) {
+        var productPage = productRepository.findAllRandom(pageable);
+        return ProductPage.Paging.from(productPage);
+    }
+
     public Product save(ProductRequest productSaveRequest) {
         //TODO ArtistInfo 코드 병합시 수정 예정
         Product product = productSaveRequest.toEntity(null);