refactor

Co-authored-by: Copilot <copilot@github.com>

lib/features/operations/blocs/operations_cubit.dart

@@ -165,7 +165,7 @@ class OperationsCubit extends Cubit<OperationsState> {
       );
 
       final updatedOperation = await _repository.saveFullOperation(
-        operationToSave,
+        operation: operationToSave,
       );
 
       emit(
@@ -233,6 +233,16 @@ class OperationsCubit extends Cubit<OperationsState> {
 
     // Creiamo il modello aggiornato
     // ATTENZIONE: adatta questa logica in base a come è scritto il tuo copyWith!
+    int? newQuantity;
+    if (clearQuantity) {
+      newQuantity = 1;
+    }
+    if (quantity != null && quantity <= 0) {
+      newQuantity = 0;
+    }
+    if (quantity != null && quantity > 0) {
+      newQuantity = quantity;
+    }
     final updated = current.copyWith(
       customerId: customerId,
       customerDisplayName: customerDisplayName,
@@ -242,7 +252,7 @@ class OperationsCubit extends Cubit<OperationsState> {
       providerDisplayName: clearProvider
           ? null
           : (providerDisplayName ?? current.providerDisplayName),
-      quantity: clearQuantity ? 1 : (quantity ?? current.quantity),
+      quantity: newQuantity,
       type: clearType ? null : (type ?? current.type),
       subtype: clearSubtype ? null : (subtype ?? current.subtype),
       expirationDate: clearExpiration