feat: products quantity and total price in deal schemas

services/deal.py

@@ -26,7 +26,7 @@ class DealService(
         sorting: SortingSchema,
         *filters,
     ) -> GetDealsResponse:
-        deals, total_items = await self.repository.get_all(
+        rows, total_items = await self.repository.get_all(
             pagination.page,
             pagination.items_per_page,
             sorting.field,
@@ -38,8 +38,17 @@ class DealService(
         if pagination.items_per_page:
             total_pages = math.ceil(total_items / pagination.items_per_page)
 
+        deals = [
+            DealSchema(
+                **deal.__dict__,
+                products_quantity=products_quantity,
+                total_price=total_price,
+            )
+            for deal, total_price, products_quantity in rows
+        ]
+
         return GetDealsResponse(
-            items=[DealSchema.model_validate(deal) for deal in deals],
+            items=deals,
             pagination_info=PaginationInfoSchema(
                 total_pages=total_pages, total_items=total_items
             ),