update

cmd/cart/mutation_add_request.go

@@ -1,51 +0,0 @@
-package main
-
-// mutation_add_request.go
-//
-// Registers the AddRequest mutation. This mutation is a higher-level intent
-// (add by SKU + quantity) which may translate into either:
-//   - Increasing quantity of an existing line (same SKU), OR
-//   - Creating a new item by performing a product lookup (via getItemData inside CartGrain.AddItem)
-//
-// Behavior:
-//   - Validates non-empty SKU and quantity > 0
-//   - If an item with the SKU already exists: increments its quantity
-//   - Else delegates to CartGrain.AddItem (which itself produces an AddItem mutation)
-//   - Totals recalculated automatically (WithTotals)
-//
-// NOTE:
-//   - This handler purposely avoids duplicating the detailed AddItem logic;
-//     it reuses CartGrain.AddItem which then flows through the AddItem mutation
-//     registry handler.
-//   - Double total recalculation can occur (AddItem has WithTotals too), but
-//     is acceptable for clarity. Optimize later if needed.
-//
-// Potential future improvements:
-//   - Stock validation before increasing quantity
-//   - Reservation logic or concurrency guards around stock updates
-//   - Coupon / pricing rules applied conditionally during add-by-sku
-
-// func HandleAddRequest(g *CartGrain, m *messages.AddRequest) error {
-// 	if m == nil {
-// 		return fmt.Errorf("AddRequest: nil payload")
-// 	}
-// 	if m.Sku == "" {
-// 		return fmt.Errorf("AddRequest: sku is empty")
-// 	}
-// 	if m.Quantity < 1 {
-// 		return fmt.Errorf("AddRequest: invalid quantity %d", m.Quantity)
-// 	}
-
-// 	// Existing line: accumulate quantity only.
-// 	if existing, found := g.FindItemWithSku(m.Sku); found {
-// 		existing.Quantity += int(m.Quantity)
-// 		return nil
-// 	}
-// 	data, err := GetItemAddMessage(m.Sku, int(m.Quantity), m.Country, m.StoreId)
-// 	if err != nil {
-// 		return err
-// 	}
-// 	return AddItem(g, data)
-
-// 	return err
-// }

cmd/cart/pool-server.go

@@ -182,10 +182,15 @@ func (s *PoolServer) HandleAddRequest(w http.ResponseWriter, r *http.Request, id
 	if err != nil {
 		return err
 	}
-	reply, err := s.ApplyLocal(id, &addRequest)
+	msg, err := GetItemAddMessage(addRequest.Sku, int(addRequest.Quantity), addRequest.Country, addRequest.StoreId)
 	if err != nil {
 		return err
 	}
+	reply, err := s.ApplyLocal(id, msg)
+	if err != nil {
+		return err
+	}
+
 	return s.WriteResult(w, reply)
 }
 

proto/messages.proto

@@ -9,8 +9,8 @@ message AddRequest {
 		optional string storeId = 4;
 }
 
-message SetCartRequest {
-		repeated AddRequest items = 1;
+message ClearCartRequest {
+
 }
 
 message AddItem {