feat: Phase 1 — remove Stripe, switch to e-Transfer

- Drop stripe_payment + stripe_sdk deps; delete stripe pay pages/widgets
- New ETransferPay widget: shows payment@wisetronic.com + R#<orderId> remark
- goPayment stripe/native branches now route to e-Transfer
- pay_now widgets: strip saved-cards section & dead nativePay logic
- my_cards pages rewritten as e-Transfer info (route kept)
- models/utils/constants cleaned of stripe; env constraint -> Dart 3

See UPGRADE_NOTES.md. (Null-safety migration is Phase 3; deps upgrade Phase 2.)

lib/utils/util_io.dart

@@ -15,7 +15,6 @@ import 'package:hive/hive.dart';
 import 'package:image_picker/image_picker.dart';
 import 'package:path/path.dart';
 import 'package:path_provider/path_provider.dart';
-import 'package:stripe_payment/stripe_payment.dart';
 
 import '../constants.dart';
 import '../events/eventbus.dart';
@@ -24,12 +23,11 @@ import '../generated/l10n.dart';
 import '../models/comment.dart';
 import '../models/order.dart';
 import '../models/payment_platform.dart';
-import '../models/stripe_payment_method.dart';
 import '../models/user.dart';
 import '../routes.dart';
 import '../store/actions.dart';
 import '../store/store.dart';
-import '../widgets/general/stripe_pay.dart';
+import '../widgets/general/e_transfer_pay.dart';
 import 'http_util.dart';
 import 'utils.dart';
 
@@ -507,62 +505,14 @@ class Util {
   }
 
   Widget getNativePay(BuildContext context, Order order, PaymentPlatform paymentPlatform) {
-    return GestureDetector(
-      child: Container(
-        padding: EdgeInsets.only(top: 16.0, left: 16.0, right: 16.0, bottom: 16.0),
-        child: Center(
-          child: Row(
-            mainAxisAlignment: MainAxisAlignment.start,
-            mainAxisSize: MainAxisSize.min,
-            children: <Widget>[
-              Container(
-                margin: EdgeInsets.only(right: 6.0),
-                child: Text(
-                  Platform.isAndroid ? S.of(context).pay_with : S.of(context).pay_with,
-                  style: TextStyle(
-                    fontSize: 18.0,
-                    fontWeight: FontWeight.bold,
-                  ),
-                ),
-              ),
-              Container(
-                padding: EdgeInsets.only(right: 10.0),
-                child: Platform.isAndroid ? Image.asset(
-                  'assets/images/google_pay.png',
-                  height: 22.0,
-                  fit: BoxFit.fitHeight,
-                ) : Image.asset(
-                  'assets/images/apple_pay.png',
-                  height: 22.0,
-                  fit: BoxFit.fitHeight,
-                ),
-              ),
-            ],
-          ),
-        ),
-        decoration: BoxDecoration(
-          border: Border(
-            bottom: BorderSide(
-              width: 10,
-              color: Colors.black26,
-            ),
-          ),
-        ),
-      ),
-      onTap: () {
-        print(paymentPlatform);
-        PaymentPlatform newPaymentPlatform = PaymentPlatform.fromJson(json.decode(json.encode(paymentPlatform)));
-        newPaymentPlatform.code = Constants.PAYMENT_METHOD_NATIVE_PAY;
-        goPayment(context, order, newPaymentPlatform);
-      },
-    );
+    // Native (Apple/Google) pay removed with Stripe. Web uses e-Transfer.
+    return SizedBox.shrink();
   }
 
   static void goPayment(BuildContext context, Order order,
       PaymentPlatform paymentPlatform, {
         bool googlePay=false,
         bool applePay=false,
-        StripePaymentMethod stripePaymentMethod,
       }) {
     switch(paymentPlatform.code) {
       case Constants.PAYMENT_METHOD_CODE_SQUARE:
@@ -584,102 +534,23 @@ class Util {
 
         break;
       case Constants.PAYMENT_METHOD_NATIVE_PAY:
-        StripePayment.setOptions(
-            StripeOptions(publishableKey: paymentPlatform.publishableKey,
-                merchantId: paymentPlatform.merchantId,
-                androidPayMode: paymentPlatform.publishableKey.contains('_test_')
-                    ? 'test'
-                    : 'production'
-            )
-        );
-        StripePayment.paymentRequestWithNativePay(
-          androidPayOptions: AndroidPayPaymentRequest(
-            totalPrice: order.totalPrice.toStringAsFixed(2),
-            currencyCode: order.businessInfo.currency,
-          ),
-          applePayOptions: ApplePayPaymentOptions(
-            currencyCode: order.businessInfo.currency,
-            countryCode: order.businessInfo.address.country,
-            items: [
-              ApplePayItem(
-                label: order.businessInfo.name,
-                amount: order.totalPrice.toStringAsFixed(2),
-              ),
-            ],
-          ),
-        ).then((token) {
-          print('return native token: ${token.tokenId}');
-          processNativePay(context, token, order);
-        }).catchError((error) {
-          print('native pay error: $error');
-        });
+        // Native (Apple/Google) pay removed with Stripe; route to e-Transfer.
+        Navigator.pushReplacement(context, MaterialPageRoute(
+            builder: (BuildContext context) {
+              return ETransferPay(order: order);
+            }
+        ));
         break;
       case Constants.PAYMENT_METHOD_CODE_STRIPE:
         Navigator.pushReplacement(context, MaterialPageRoute(
             builder: (BuildContext context) {
-              return StripePay(order, paymentPlatform, stripePaymentMethod: stripePaymentMethod,);
+              return ETransferPay(order: order);
             }
         ));
         break;
     }
   }
 
-  static void processNativePay(BuildContext context, Token token, Order order) async {
-    PaymentMethod paymentMethod = await StripePayment.createPaymentMethod(
-      PaymentMethodRequest(
-        card: CreditCard(
-          token: token.tokenId,
-        ),
-      ),
-    );
-    if (paymentMethod != null) {
-      Utils.stripePaymentIntent(order, null, paymentMethod.id, paymentMethod.type, (response) {
-        if (response.data['status'] == Constants.STRIPE_STATUS_REQUIRES_CONFIRMATION) {
-          StripePayment.confirmPaymentIntent(
-            PaymentIntent(
-              clientSecret: response.data[Constants.STRIPE_CLIENT_SECRET],
-              paymentMethodId: response.data['payment_method'],
-            ),
-          ).then((paymentIntentResult) {
-            if (paymentIntentResult.status == Constants.STRIPE_STATUS_SUCCEDED) {
-              Utils.stripeChargedSuccess(order,
-                  paymentMethod.id,
-                  paymentIntentResult.paymentIntentId,
-                      (response) {
-                    StripePayment.completeNativePayRequest().then((_) {
-                      eventBus.fire(OnOrderUpdated());
-                      Routes.router.navigateTo(context, '/orderdetail/${order.id}', replace: true);
-                    }).catchError((error) {
-                      Utils.showMessageDialog(context, error, onOk: () {
-                        Navigator.of(context).pop();
-                      });
-                    });
-                  },
-                      (error) {
-                    Utils.showMessageDialog(context, error, onOk: () {
-                      Navigator.of(context).pop();
-                    });
-                  }
-              );
-            } else {
-              Utils.showMessageDialog(context, Exception('Unknown error'));
-            }
-          }).catchError((error) {
-            Utils.showMessageDialog(context, error, onOk: () {
-              Navigator.of(context).pop();
-            });
-          });
-        }
-      }, (error) {
-        Utils.showMessageDialog(context, error, onOk: () {
-          Navigator.of(context).pop();
-        });
-      });
-    } else {
-
-    }
-  }
-
   static Future<Uint8List> getBytesFromAsset(String path, int width) async {
     ByteData data = await rootBundle.load(path);
     ui.Codec codec = await ui.instantiateImageCodec(data.buffer.asUint8List(), targetWidth: width);

lib/utils/util_web.dart

@@ -16,11 +16,10 @@ import '../generated/l10n.dart';
 import '../models/comment.dart' as mComment;
 import '../models/order.dart';
 import '../models/payment_platform.dart';
-import '../models/stripe_payment_method.dart';
 import '../models/user.dart';
 import '../store/actions.dart';
 import '../store/store.dart';
-import '../pages/stripe_pay_web.dart';
+import '../widgets/general/e_transfer_pay.dart';
 import 'http_util.dart';
 import 'utils.dart';
 
@@ -252,7 +251,6 @@ class Util {
       PaymentPlatform paymentPlatform, {
         bool googlePay=false,
         bool applePay=false,
-        StripePaymentMethod stripePaymentMethod,
       }) {
     switch(paymentPlatform.code) {
       case Constants.PAYMENT_METHOD_CODE_SQUARE:
@@ -276,7 +274,7 @@ class Util {
       case Constants.PAYMENT_METHOD_CODE_STRIPE:
         Navigator.pushReplacement(context, MaterialPageRoute(
             builder: (BuildContext context) {
-              return StripePayWeb(order, paymentPlatform, stripePaymentMethod: stripePaymentMethod,);
+              return ETransferPay(order: order);
             }
         ));
         break;

lib/utils/utils.dart

@@ -291,39 +291,6 @@ class Utils {
     return amount.toStringAsFixed(decimalPlace);
   }
 
-  static void createOrUpdateStripePaymentMethod(
-    String paymentMethodId,
-    String cardBrand,
-    String paymentMethodType,
-    String cardCountry,
-    int cardExpMonth,
-    int cardExpYear,
-    String cardFunding,
-    String cardLast4,
-  ) {
-    HttpUtil.httpPost(
-      'v1/create-update-stripe-payment-method',
-      (response) {
-        if (response.statusCode == 200) {
-          print(
-              'create or update customer stripe payment method success. ${response.data}');
-        }
-      },
-      body: {
-        'payment_method_id': paymentMethodId,
-        'card_brand': cardBrand,
-        'payment_method_type': paymentMethodType,
-        'card_country': cardCountry,
-        'card_exp_month': cardExpMonth,
-        'card_exp_year': cardExpYear,
-        'card_funding': cardFunding,
-        'card_last4': cardLast4,
-      },
-      isFormData: true,
-    ).catchError((error) {
-      print('Error: ${error}');
-    });
-  }
 
   static showSubmitDialog(BuildContext context) {
     showDialog(
@@ -900,48 +867,7 @@ class Utils {
     }
   }
 
-  static void stripePaymentIntent(Order order, String customerId, String paymentMethodId, String cardType,
-      OnSuccess onSuccess, OnError onError,
-      {
-        String cardBrand,
-        String cardCountry,
-        int cardExpMonth,
-        int cardExpYear,
-        String cardFunding,
-        String cardLast4,
-      }) {
 
-    HttpUtil.httpPost('v1/stripe-payment-intent',
-      onSuccess,
-      body: {
-        'order_id': order.id,
-        'pay_amount': order.totalPrice,
-        'customer_id': customerId == null ? '' : customerId,
-        'payment_method_id': paymentMethodId,
-        'payment_method_type': cardType,
-        'card_brand': cardBrand,
-        'card_country': cardCountry,
-        'card_exp_month': cardExpMonth,
-        'card_exp_year': cardExpYear,
-        'card_funding': cardFunding,
-        'card_last4': cardLast4,
-      },
-      isFormData: true,
-    ).catchError(onError);
-  }
-
-  static void stripeChargedSuccess(Order order, String paymentMethodId,
-      String paymentIntentId, OnSuccess onSuccess, OnError onError) {
-    HttpUtil.httpPost('v1/stripe-charged-success',
-        onSuccess,
-        isFormData: true,
-        body: {
-          'order_id': order.id,
-          'payment_method_id': paymentMethodId,
-          'payment_intent_id': paymentIntentId,
-        }
-    ).catchError(onError);
-  }
 
   static int getProductLineInOrder(CartInfo cartInfo) {
     int qty = 0;