fix

lib/features/cart/presentation/widgets/checkout_submit_button.dart

@@ -9,40 +9,29 @@ import 'package:go_router/go_router.dart';
 import 'package:worker/core/constants/ui_constants.dart';
 import 'package:worker/core/router/app_router.dart';
 import 'package:worker/core/theme/colors.dart';
+import 'package:worker/features/account/domain/entities/address.dart';
 
 /// Checkout Submit Button
 ///
 /// Button that changes based on negotiation checkbox state.
 class CheckoutSubmitButton extends StatelessWidget {
-  final GlobalKey<FormState> formKey;
-  final bool needsNegotiation;
-  final bool needsInvoice;
-  final String name;
-  final String phone;
-  final String address;
-  final String? province;
-  final String? ward;
-  final String paymentMethod;
-  final String companyName;
-  final String taxId;
-  final double total;
-
   const CheckoutSubmitButton({
     super.key,
     required this.formKey,
     required this.needsNegotiation,
     required this.needsInvoice,
-    required this.name,
-    required this.phone,
-    required this.address,
-    required this.province,
-    required this.ward,
+    required this.selectedAddress,
     required this.paymentMethod,
-    required this.companyName,
-    required this.taxId,
     required this.total,
   });
 
+  final GlobalKey<FormState> formKey;
+  final bool needsNegotiation;
+  final bool needsInvoice;
+  final Address? selectedAddress;
+  final String paymentMethod;
+  final double total;
+
   @override
   Widget build(BuildContext context) {
     return Padding(
@@ -63,6 +52,18 @@ class CheckoutSubmitButton extends StatelessWidget {
             width: double.infinity,
             child: ElevatedButton(
               onPressed: () {
+                // Validate address is selected
+                if (selectedAddress == null) {
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    const SnackBar(
+                      content: Text('Vui lòng chọn địa chỉ giao hàng'),
+                      backgroundColor: AppColors.danger,
+                      duration: Duration(seconds: 2),
+                    ),
+                  );
+                  return;
+                }
+
                 if (formKey.currentState?.validate() ?? false) {
                   _handlePlaceOrder(context);
                 }