feat(backend): ProductService.detail返回套餐商品组成

cfc-backend/src/main/java/com/etotem/cfc/service/ProductService.java

@@ -10,9 +10,13 @@ import com.etotem.cfc.dto.ProductListQueryDTO;
 import com.etotem.cfc.entity.AssessmentProduct;
 import com.etotem.cfc.entity.GrowthArchiveProduct;
 import com.etotem.cfc.entity.Product;
+import com.etotem.cfc.entity.ProductBundleItem;
 import com.etotem.cfc.entity.ProductGiftRule;
+import com.etotem.cfc.entity.ProductSku;
 import com.etotem.cfc.entity.User;
+import com.etotem.cfc.mapper.ProductBundleItemMapper;
 import com.etotem.cfc.mapper.ProductMapper;
+import com.etotem.cfc.mapper.ProductSkuMapper;
 import com.etotem.cfc.mapper.UserMapper;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -50,6 +54,12 @@ public class ProductService {
     @Resource
     private ProductDeliveryConfigService productDeliveryConfigService;
 
+    @Resource
+    private ProductBundleItemMapper bundleItemMapper;
+
+    @Resource
+    private ProductSkuMapper productSkuMapper;
+
     public Product getById(Long id) {
         return productMapper.selectById(id);
     }
@@ -127,6 +137,29 @@ wrapper.in(Product::getId, productIds)
             return Result.error("商品未上架");
         }
         ProductDTO dto = ProductDTO.from(product);
+        // 套餐商品：填充套餐组成（子商品名称/封面/SKU规格/数量）
+        if ("bundle".equals(product.getProductType())) {
+            List<ProductBundleItem> items = bundleItemMapper.selectList(
+                    new LambdaQueryWrapper<ProductBundleItem>()
+                            .eq(ProductBundleItem::getBundleProductId, id));
+            List<ProductDTO.BundleItemVO> bundleItems = new ArrayList<>();
+            for (ProductBundleItem bi : items) {
+                Product child = productMapper.selectById(bi.getChildProductId());
+                if (child == null) continue;   // 子商品已删除则跳过
+                ProductDTO.BundleItemVO vo = new ProductDTO.BundleItemVO();
+                vo.setChildProductId(child.getId());
+                vo.setChildProductName(child.getName());
+                vo.setCoverImage(child.getCoverImage());
+                vo.setChildSkuId(bi.getChildSkuId());
+                vo.setQuantity(bi.getQuantity());
+                if (bi.getChildSkuId() != null) {
+                    ProductSku sku = productSkuMapper.selectById(bi.getChildSkuId());
+                    if (sku != null) vo.setSpecs(sku.getSpecs());
+                }
+                bundleItems.add(vo);
+            }
+            dto.setBundleItems(bundleItems);
+        }
         ProductGiftRule giftRule = productGiftRuleService.getActiveByProductId(id);
         if (giftRule != null) {
             dto.setGiftLevelCode(giftRule.getLevelCode());