fixing android build

lib/browser.dart

@@ -0,0 +1,14 @@
+/// Platform-aware browser API abstraction.
+///
+/// On web, provides real browser localStorage and location APIs.
+/// On non-web platforms (Android, iOS, desktop), returns no-op stubs.
+///
+/// Usage:
+/// ```dart
+/// import 'package:qpay/browser.dart';
+/// Browser.localStorage.setItem('key', 'value');
+/// Browser.localStorage.getItem('key');
+/// Browser.location.href = 'https://example.com';
+/// ```
+export 'platform/browser_stub.dart'
+    if (dart.library.html) 'platform/browser_web.dart';

lib/main.dart

@@ -1,8 +1,9 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_web_plugins/flutter_web_plugins.dart';
 import 'package:provider/provider.dart';
 import 'package:qpay/auth_state.dart';
 import 'package:qpay/routes.dart';
+import 'package:qpay/url_strategy.dart';
 import 'package:qpay/screens/transaction_controller.dart';
 import 'package:qpay/screens/onboarding/onboarding_controller.dart';
 import 'package:qpay/theme/app_theme.dart';
@@ -26,7 +27,9 @@ String resolveEnvFile(String env) {
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  usePathUrlStrategy();
+  if (kIsWeb) {
+    usePathUrlStrategy();
+  }
   await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
 
   await dotenv.load(fileName: resolveEnvFile(appEnv));
@@ -70,4 +73,4 @@ class _MyAppState extends State<MyApp> {
       routerConfig: buildRouter(),
     );
   }
-}
+}

lib/platform/browser_stub.dart

@@ -0,0 +1,18 @@
+/// Stub implementation of browser APIs for non-web platforms.
+class BrowserStorage {
+  String? getItem(String key) => null;
+  void setItem(String key, String value) {}
+  void removeItem(String key) {}
+}
+
+/// Stub for window.location
+class BrowserLocation {
+  String get href => '';
+  set href(String value) {}
+}
+
+/// Browser utility class for non-web platforms.
+class Browser {
+  static final BrowserStorage localStorage = BrowserStorage();
+  static final BrowserLocation location = BrowserLocation();
+}

lib/platform/browser_web.dart

@@ -0,0 +1,22 @@
+import 'package:web/web.dart' as web;
+
+/// Web implementation of browser APIs using package:web.
+class BrowserStorage {
+  String? getItem(String key) => web.window.localStorage.getItem(key);
+  void setItem(String key, String value) =>
+      web.window.localStorage.setItem(key, value);
+  void removeItem(String key) =>
+      web.window.localStorage.removeItem(key);
+}
+
+/// Web implementation for window.location
+class BrowserLocation {
+  String get href => web.window.location.href;
+  set href(String value) => web.window.location.href = value;
+}
+
+/// Browser utility class using package:web.
+class Browser {
+  static final BrowserStorage localStorage = BrowserStorage();
+  static final BrowserLocation location = BrowserLocation();
+}

lib/platform/url_strategy_stub.dart

@@ -0,0 +1,3 @@
+/// Stub for path URL strategy on non-web platforms.
+/// Does nothing since URL strategies are web-only.
+void usePathUrlStrategy() {}

lib/platform/url_strategy_web.dart

@@ -0,0 +1,6 @@
+import 'package:flutter_web_plugins/flutter_web_plugins.dart';
+
+/// Web implementation that sets the path URL strategy.
+void usePathUrlStrategy() {
+  flutter_web_plugins.usePathUrlStrategy();
+}

lib/screens/gateway/gateway_web_screen.dart

@@ -3,7 +3,7 @@ import 'package:flutter_dotenv/flutter_dotenv.dart';
 import 'package:go_router/go_router.dart';
 import 'package:qpay/models/responsive_policy.dart';
 import 'package:qpay/screens/gateway/gateway_controller.dart';
-import 'package:web/web.dart' as web;
+import 'package:qpay/browser.dart';
 
 class GatewayWebScreen extends StatefulWidget {
   const GatewayWebScreen({super.key});
@@ -50,7 +50,7 @@ class _GatewayWebScreenState extends State<GatewayWebScreen> {
     final transactionId =
         controller.transactionController.model.confirmationData['id'];
     if (transactionId != null) {
-      web.window.localStorage.setItem(
+      Browser.localStorage.setItem(
         'pendingTransactionId',
         transactionId.toString(),
       );
@@ -60,7 +60,7 @@ class _GatewayWebScreenState extends State<GatewayWebScreen> {
     // After payment, the gateway will redirect back to this app's host.
     // index.html then reads the saved transaction ID and navigates to
     // /poll/:id so the app can immediately start polling for the result.
-    web.window.location.href = url;
+    Browser.location.href = url;
   }
 
   @override

lib/screens/poll/poll_screen.dart

@@ -5,7 +5,7 @@ import 'package:provider/provider.dart';
 import 'package:qpay/screens/gateway/gateway_controller.dart';
 import 'package:qpay/screens/transaction_controller.dart';
 import 'package:qpay/widgets/step_loading_widget.dart';
-import 'package:web/web.dart' as web;
+import 'package:qpay/browser.dart';
 
 class PollScreen extends StatefulWidget {
   final String? transactionId;
@@ -39,8 +39,8 @@ class _PollScreenState extends State<PollScreen> {
     // Priority 2: localStorage (for when gateway redirect causes page reload
     // and the route param path is not available due to hub redirect override)
     if (transactionId == null && kIsWeb) {
-      transactionId = web.window.localStorage.getItem('pendingTransactionId');
-      web.window.localStorage.removeItem('pendingTransactionId');
+      transactionId = Browser.localStorage.getItem('pendingTransactionId');
+      Browser.localStorage.removeItem('pendingTransactionId');
     }
 
     // Priority 3: in-memory confirmation data (normal SPA navigation)

lib/url_strategy.dart

@@ -0,0 +1,6 @@
+/// Platform-aware path URL strategy.
+///
+/// On web, sets the path URL strategy via [usePathUrlStrategy].
+/// On non-web platforms, this is a no-op.
+export 'platform/url_strategy_stub.dart'
+    if (dart.library.html) 'platform/url_strategy_web.dart';