update cart/favorite

lib/features/cart/data/repositories/cart_repository_impl.dart

@@ -36,6 +36,7 @@ class CartRepositoryImpl implements CartRepository {
     required List<String> itemIds,
     required List<double> quantities,
     required List<double> prices,
+    List<double?>? conversionFactors,
   }) async {
     try {
       // Validate input
@@ -48,11 +49,16 @@ class CartRepositoryImpl implements CartRepository {
       // Build API request items
       final items = <Map<String, dynamic>>[];
       for (int i = 0; i < itemIds.length; i++) {
-        items.add({
+        final item = <String, dynamic>{
           'item_id': itemIds[i],
           'quantity': quantities[i],
           'amount': prices[i],
-        });
+        };
+        // Add conversion_of_sm if provided
+        if (conversionFactors != null && i < conversionFactors.length) {
+          item['conversion_of_sm'] = conversionFactors[i] ?? 0.0;
+        }
+        items.add(item);
       }
 
       // Try API first
@@ -66,6 +72,7 @@ class CartRepositoryImpl implements CartRepository {
               productId: itemIds[i],
               quantity: quantities[i],
               unitPrice: prices[i],
+              conversionOfSm: conversionFactors?[i],
             );
             await _localDataSource.addCartItem(cartItemModel);
           }
@@ -80,6 +87,7 @@ class CartRepositoryImpl implements CartRepository {
               productId: itemIds[i],
               quantity: quantities[i],
               unitPrice: prices[i],
+              conversionOfSm: conversionFactors?[i],
             );
             await _localDataSource.addCartItem(cartItemModel);
           }
@@ -176,6 +184,7 @@ class CartRepositoryImpl implements CartRepository {
     required String itemId,
     required double quantity,
     required double price,
+    double? conversionFactor,
   }) async {
     try {
       // API doesn't have update endpoint, use add with new quantity
@@ -184,6 +193,7 @@ class CartRepositoryImpl implements CartRepository {
         itemIds: [itemId],
         quantities: [quantity],
         prices: [price],
+        conversionFactors: conversionFactor != null ? [conversionFactor] : null,
       );
     } catch (e) {
       throw UnknownException('Failed to update cart item quantity', e);
@@ -268,6 +278,9 @@ class CartRepositoryImpl implements CartRepository {
       unitPrice: model.unitPrice,
       subtotal: model.subtotal,
       addedAt: model.addedAt,
+      itemName: model.itemName,
+      image: model.image,
+      conversionOfSm: model.conversionOfSm,
     );
   }
 
@@ -276,6 +289,7 @@ class CartRepositoryImpl implements CartRepository {
     required String productId,
     required double quantity,
     required double unitPrice,
+    double? conversionOfSm,
   }) {
     return CartItemModel(
       cartItemId: DateTime.now().millisecondsSinceEpoch.toString(),
@@ -285,6 +299,7 @@ class CartRepositoryImpl implements CartRepository {
       unitPrice: unitPrice,
       subtotal: quantity * unitPrice,
       addedAt: DateTime.now(),
+      conversionOfSm: conversionOfSm,
     );
   }
 }