refactor: 产品页与产品列表的API重构

- 将产品页与产品列表的API由REST重构为GraphQL
- 修改Mapper与单元测试

app/models/mappers/productMapper.ts

@@ -33,12 +33,14 @@ export function toProductListView(raw: Product): ProductListView {
     ? toProductTypeView(raw.product_type)
     : undefined;
 
+  const cover = isObject<DirectusFile>(raw.cover) ? raw.cover.id : '';
+
   return {
     id: raw.id,
     product_type: type,
     name: trans.name,
     summary: trans.summary,
-    cover: raw.cover.toString(),
+    cover: cover,
   };
 }
 
@@ -110,9 +112,10 @@ export function toProductView(raw: Product): ProductView {
     .map((item) => item.product_images_id)
     .filter(isObject<ProductImage>)
     .map((item) => {
+      const image = isObject<DirectusFile>(item.image) ? item.image.id : '';
       return {
         id: item.id,
-        image: item.image.toString(),
+        image: image,
         caption: item.translations?.[0]?.caption || '',
       };
     });