Nano-GPT (#1336)

* init * updates * nano updates * updates * updates * [skipci] wip deep link changes * fix deep links * minor fix * add reminder message on buy and exchange routes * [skip ci] font fixes * review updates * [skip ci] minor fix * save * fixes * minor code cleanup * minor potential fix
2026-10-20 06:08:34 +02:00 · 2024-05-08 03:00:01 +03:00
parent e5be737236
commit baad7f7469
46 changed files with 486 additions and 195 deletions
@@ -26,6 +26,7 @@ import 'package:cake_wallet/entities/contact.dart';
 import 'package:cake_wallet/entities/contact_record.dart';
 import 'package:cake_wallet/entities/exchange_api_mode.dart';
 import 'package:cake_wallet/entities/parse_address_from_domain.dart';
+import 'package:cake_wallet/view_model/link_view_model.dart';
 import 'package:cake_wallet/tron/tron.dart';
 import 'package:cake_wallet/src/screens/transaction_details/rbf_details_page.dart';
 import 'package:cw_core/receive_page_option.dart';
@@ -268,6 +269,7 @@ Future<void> setup({
  required Box<UnspentCoinsInfo> unspentCoinsInfoSource,
  required Box<AnonpayInvoiceInfo> anonpayInvoiceInfoSource,
  required FlutterSecureStorage secureStorage,
+  required GlobalKey<NavigatorState> navigatorKey,
 }) async {
  _walletInfoSource = walletInfoSource;
  _nodeSource = nodeSource;
@@ -429,68 +431,89 @@ Future<void> setup({
    ),
  );

-  getIt.registerFactory<AuthPage>(() {
-    return AuthPage(getIt.get<AuthViewModel>(),
+  getIt.registerLazySingleton<LinkViewModel>(() {
+    return LinkViewModel(
+      appStore: getIt.get<AppStore>(),
+      settingsStore: getIt.get<SettingsStore>(),
+      authenticationStore: getIt.get<AuthenticationStore>(),
+      navigatorKey: navigatorKey,
+    );
+  });
+
+  getIt.registerFactory<AuthPage>(instanceName: 'login', () {
+    return AuthPage(getIt.get<AuthViewModel>(), closable: false,
        onAuthenticationFinished: (isAuthenticated, AuthPageState authPageState) {
      if (!isAuthenticated) {
        return;
-      } else {
-        final authStore = getIt.get<AuthenticationStore>();
-        final appStore = getIt.get<AppStore>();
-        final useTotp = appStore.settingsStore.useTOTP2FA;
-        final shouldUseTotp2FAToAccessWallets =
-            appStore.settingsStore.shouldRequireTOTP2FAForAccessingWallet;
-        if (useTotp && shouldUseTotp2FAToAccessWallets) {
-          authPageState.close(
-            route: Routes.totpAuthCodePage,
-            arguments: TotpAuthArgumentsModel(
-              isForSetup: false,
-              isClosable: false,
-              onTotpAuthenticationFinished: (bool isAuthenticatedSuccessfully,
-                  TotpAuthCodePageState totpAuthPageState) async {
-                if (!isAuthenticatedSuccessfully) {
-                  return;
-                }
-                if (appStore.wallet != null) {
-                  authStore.allowed();
-                  return;
-                }
-
-                totpAuthPageState.changeProcessText('Loading the wallet');
-
-                if (loginError != null) {
-                  totpAuthPageState.changeProcessText('ERROR: ${loginError.toString()}');
-                }
-
-                ReactionDisposer? _reaction;
-                _reaction = reaction((_) => appStore.wallet, (Object? _) {
-                  _reaction?.reaction.dispose();
-                  authStore.allowed();
-                });
-              },
-            ),
-          );
-        } else {
-          if (appStore.wallet != null) {
-            authStore.allowed();
-            return;
-          }
-
-          authPageState.changeProcessText('Loading the wallet');
-
-          if (loginError != null) {
-            authPageState.changeProcessText('ERROR: ${loginError.toString()}');
-          }
-
-          ReactionDisposer? _reaction;
-          _reaction = reaction((_) => appStore.wallet, (Object? _) {
-            _reaction?.reaction.dispose();
-            authStore.allowed();
-          });
-        }
      }
-    }, closable: false);
-  }, instanceName: 'login');
+      final authStore = getIt.get<AuthenticationStore>();
+      final appStore = getIt.get<AppStore>();
+      final useTotp = appStore.settingsStore.useTOTP2FA;
+      final shouldUseTotp2FAToAccessWallets =
+          appStore.settingsStore.shouldRequireTOTP2FAForAccessingWallet;
+      if (useTotp && shouldUseTotp2FAToAccessWallets) {
+        authPageState.close(
+          route: Routes.totpAuthCodePage,
+          arguments: TotpAuthArgumentsModel(
+            isForSetup: false,
+            isClosable: false,
+            onTotpAuthenticationFinished:
+                (bool isAuthenticatedSuccessfully, TotpAuthCodePageState totpAuthPageState) async {
+              if (!isAuthenticatedSuccessfully) {
+                return;
+              }
+              if (appStore.wallet != null) {
+                authStore.allowed();
+                return;
+              }
+
+              totpAuthPageState.changeProcessText('Loading the wallet');
+
+              if (loginError != null) {
+                totpAuthPageState.changeProcessText('ERROR: ${loginError.toString()}');
+              }
+
+              ReactionDisposer? _reaction;
+              _reaction = reaction((_) => appStore.wallet, (Object? _) {
+                _reaction?.reaction.dispose();
+                authStore.allowed();
+              });
+            },
+          ),
+        );
+      } else {
+        // wallet is already loaded:
+        if (appStore.wallet != null) {
+          // goes to the dashboard:
+          authStore.allowed();
+          // trigger any deep links:
+          final linkViewModel = getIt.get<LinkViewModel>();
+          if (linkViewModel.currentLink != null) {
+            linkViewModel.handleLink();
+          }
+          return;
+        }
+
+        // load the wallet:
+
+        authPageState.changeProcessText('Loading the wallet');
+
+        if (loginError != null) {
+          authPageState.changeProcessText('ERROR: ${loginError.toString()}');
+        }
+
+        ReactionDisposer? _reaction;
+        _reaction = reaction((_) => appStore.wallet, (Object? _) {
+          _reaction?.reaction.dispose();
+          authStore.allowed();
+          final linkViewModel = getIt.get<LinkViewModel>();
+          if (linkViewModel.currentLink != null) {
+            linkViewModel.handleLink();
+          }
+        });
+      }
+    });
+  });

  getIt.registerSingleton<BottomSheetService>(BottomSheetServiceImpl());

@@ -849,8 +872,10 @@ Future<void> setup({
      tradesStore: getIt.get<TradesStore>(),
      sendViewModel: getIt.get<SendViewModel>()));

-  getIt.registerFactory(
-      () => ExchangePage(getIt.get<ExchangeViewModel>(), getIt.get<AuthService>()));
+  getIt.registerFactoryParam<ExchangePage, PaymentRequest?, void>(
+      (PaymentRequest? paymentRequest, __) {
+    return ExchangePage(getIt.get<ExchangeViewModel>(), getIt.get<AuthService>(), paymentRequest);
+  });

  getIt.registerFactory(() => ExchangeConfirmPage(tradesStore: getIt.get<TradesStore>()));

@@ -7,6 +7,7 @@ import 'package:cake_wallet/locales/locale.dart';
 import 'package:cake_wallet/store/yat/yat_store.dart';
 import 'package:cake_wallet/utils/device_info.dart';
 import 'package:cake_wallet/utils/exception_handler.dart';
+import 'package:cake_wallet/view_model/link_view_model.dart';
 import 'package:cw_core/address_info.dart';
 import 'package:cake_wallet/utils/responsive_layout_util.dart';
 import 'package:cw_core/hive_type_ids.dart';
@@ -205,18 +206,20 @@ Future<void> initialSetup(
      nodes: nodes,
      powNodes: powNodes);
  await setup(
-      walletInfoSource: walletInfoSource,
-      nodeSource: nodes,
-      powNodeSource: powNodes,
-      contactSource: contactSource,
-      tradesSource: tradesSource,
-      templates: templates,
-      exchangeTemplates: exchangeTemplates,
-      transactionDescriptionBox: transactionDescriptions,
-      ordersSource: ordersSource,
-      anonpayInvoiceInfoSource: anonpayInvoiceInfo,
-      unspentCoinsInfoSource: unspentCoinsInfoSource,
-      secureStorage: secureStorage);
+    walletInfoSource: walletInfoSource,
+    nodeSource: nodes,
+    powNodeSource: powNodes,
+    contactSource: contactSource,
+    tradesSource: tradesSource,
+    templates: templates,
+    exchangeTemplates: exchangeTemplates,
+    transactionDescriptionBox: transactionDescriptions,
+    ordersSource: ordersSource,
+    anonpayInvoiceInfoSource: anonpayInvoiceInfo,
+    unspentCoinsInfoSource: unspentCoinsInfoSource,
+    secureStorage: secureStorage,
+    navigatorKey: navigatorKey,
+  );
  await bootstrap(navigatorKey);
  monero?.onStartup();
 }
@@ -287,6 +290,7 @@ class AppState extends State<App> with SingleTickerProviderStateMixin {
    return Observer(builder: (BuildContext context) {
      final appStore = getIt.get<AppStore>();
      final authService = getIt.get<AuthService>();
+      final linkViewModel = getIt.get<LinkViewModel>();
      final settingsStore = appStore.settingsStore;
      final statusBarColor = Colors.transparent;
      final authenticationStore = getIt.get<AuthenticationStore>();
@@ -309,6 +313,7 @@ class AppState extends State<App> with SingleTickerProviderStateMixin {
          authenticationStore: authenticationStore,
          navigatorKey: navigatorKey,
          authService: authService,
+          linkViewModel: linkViewModel,
          child: MaterialApp(
            navigatorObservers: [routeObserver],
            navigatorKey: navigatorKey,
@@ -221,7 +221,8 @@ Route<dynamic> createRoute(RouteSettings settings) {
        return CupertinoPageRoute<void>(
          builder: (_) => getIt.get<SetupPinCodePage>(
            param1: (PinCodeState<PinCodeWidget> context, dynamic _) =>
-                Navigator.of(context.context).pushNamed(Routes.restoreWalletFromHardwareWallet, arguments: false),
+                Navigator.of(context.context)
+                    .pushNamed(Routes.restoreWalletFromHardwareWallet, arguments: false),
          ),
          fullscreenDialog: true,
        );
@@ -231,9 +232,9 @@ Route<dynamic> createRoute(RouteSettings settings) {
            builder: (_) => ConnectDevicePage(
                  ConnectDevicePageParams(
                    walletType: availableWalletTypes.first,
-                    onConnectDevice: (BuildContext context, _) =>
-                        Navigator.of(context).pushNamed(Routes.chooseHardwareWalletAccount,
-                            arguments: [availableWalletTypes.first]),
+                    onConnectDevice: (BuildContext context, _) => Navigator.of(context).pushNamed(
+                        Routes.chooseHardwareWalletAccount,
+                        arguments: [availableWalletTypes.first]),
                  ),
                  getIt.get<LedgerViewModel>(),
                ));
@@ -243,9 +244,8 @@ Route<dynamic> createRoute(RouteSettings settings) {
                param1: (BuildContext context, WalletType type) {
                  final arguments = ConnectDevicePageParams(
                    walletType: type,
-                    onConnectDevice: (BuildContext context, _) =>
-                        Navigator.of(context).pushNamed(Routes.chooseHardwareWalletAccount,
-                            arguments: [type]),
+                    onConnectDevice: (BuildContext context, _) => Navigator.of(context)
+                        .pushNamed(Routes.chooseHardwareWalletAccount, arguments: [type]),
                  );

                  Navigator.of(context).pushNamed(Routes.connectDevices, arguments: arguments);
@@ -308,8 +308,7 @@ Route<dynamic> createRoute(RouteSettings settings) {
    case Routes.bumpFeePage:
      return CupertinoPageRoute<void>(
          fullscreenDialog: true,
-          builder: (_) =>
-              getIt.get<RBFDetailsPage>(param1: settings.arguments as TransactionInfo));
+          builder: (_) => getIt.get<RBFDetailsPage>(param1: settings.arguments as TransactionInfo));

    case Routes.newSubaddress:
      return CupertinoPageRoute<void>(
@@ -461,7 +460,9 @@ Route<dynamic> createRoute(RouteSettings settings) {

    case Routes.exchange:
      return CupertinoPageRoute<void>(
-          fullscreenDialog: true, builder: (_) => getIt.get<ExchangePage>());
+        fullscreenDialog: true,
+        builder: (_) => getIt.get<ExchangePage>(param1: settings.arguments as PaymentRequest?),
+      );

    case Routes.exchangeTemplate:
      return CupertinoPageRoute<void>(builder: (_) => getIt.get<ExchangeTemplatePage>());
@@ -59,12 +59,15 @@ class MarketPlacePage extends StatelessWidget {
                    // ),
                    SizedBox(height: 20),
                    DashBoardRoundedCardWidget(
-                      onTap: () => launchUrl(
-                        Uri.https("buy.cakepay.com"),
-                        mode: LaunchMode.externalApplication,
-                      ),
                      title: S.of(context).cake_pay_web_cards_title,
                      subTitle: S.of(context).cake_pay_web_cards_subtitle,
+                      onTap: () => _launchMarketPlaceUrl("buy.cakepay.com"),
+                    ),
+                    const SizedBox(height: 20),
+                    DashBoardRoundedCardWidget(
+                      title: "NanoGPT",
+                      subTitle: S.of(context).nanogpt_subtitle,
+                      onTap: () => _launchMarketPlaceUrl("cake.nano-gpt.com"),
                    ),
                  ],
                ),
@@ -76,6 +79,17 @@ class MarketPlacePage extends StatelessWidget {
    );
  }

+  void _launchMarketPlaceUrl(String url) async {
+    try {
+      launchUrl(
+        Uri.https(url),
+        mode: LaunchMode.externalApplication,
+      );
+    } catch (e) {
+      print(e);
+    }
+  }
+
  // TODO: Remove ionia flow/files if we will discard it
  void _navigatorToGiftCardsPage(BuildContext context) {
    final walletType = dashboardViewModel.type;
@@ -10,6 +10,7 @@ import 'package:cake_wallet/src/widgets/add_template_button.dart';
 import 'package:cake_wallet/themes/extensions/send_page_theme.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
 import 'package:cake_wallet/utils/debounce.dart';
+import 'package:cake_wallet/utils/payment_request.dart';
 import 'package:cake_wallet/utils/responsive_layout_util.dart';
 import 'package:cw_core/sync_status.dart';
 import 'package:cw_core/wallet_type.dart';
@@ -43,7 +44,7 @@ import 'package:cake_wallet/src/screens/exchange/widgets/present_provider_picker
 import 'package:cake_wallet/src/screens/dashboard/widgets/sync_indicator_icon.dart';

 class ExchangePage extends BasePage {
-  ExchangePage(this.exchangeViewModel, this.authService) {
+  ExchangePage(this.exchangeViewModel, this.authService, this.initialPaymentRequest) {
    depositWalletName = exchangeViewModel.depositCurrency == CryptoCurrency.xmr
        ? exchangeViewModel.wallet.name
        : null;
@@ -54,6 +55,7 @@ class ExchangePage extends BasePage {

  final ExchangeViewModel exchangeViewModel;
  final AuthService authService;
+  final PaymentRequest? initialPaymentRequest;
  final depositKey = GlobalKey<ExchangeCardState>();
  final receiveKey = GlobalKey<ExchangeCardState>();
  final _formKey = GlobalKey<FormState>();
@@ -543,6 +545,12 @@ class ExchangePage extends BasePage {
      //   amount: depositAmountController.text);
    });

+    if (initialPaymentRequest != null) {
+      exchangeViewModel.receiveCurrency = CryptoCurrency.fromString(initialPaymentRequest!.scheme);
+      exchangeViewModel.depositAmount = initialPaymentRequest!.amount;
+      exchangeViewModel.receiveAddress = initialPaymentRequest!.address;
+    }
+
    _isReactionsSet = true;
  }

@@ -5,6 +5,7 @@ import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/reactions/wallet_connect.dart';
 import 'package:cake_wallet/utils/device_info.dart';
 import 'package:cake_wallet/utils/payment_request.dart';
+import 'package:cake_wallet/view_model/link_view_model.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:flutter/material.dart';
 import 'package:cake_wallet/routes.dart';
@@ -25,6 +26,7 @@ class Root extends StatefulWidget {
    required this.child,
    required this.navigatorKey,
    required this.authService,
+    required this.linkViewModel,
  }) : super(key: key);

  final AuthenticationStore authenticationStore;
@@ -32,6 +34,7 @@ class Root extends StatefulWidget {
  final GlobalKey<NavigatorState> navigatorKey;
  final AuthService authService;
  final Widget child;
+  final LinkViewModel linkViewModel;

  @override
  RootState createState() => RootState();
@@ -53,7 +56,6 @@ class RootState extends State<Root> with WidgetsBindingObserver {
  StreamSubscription<Uri?>? stream;
  ReactionDisposer? _walletReactionDisposer;
  ReactionDisposer? _deepLinksReactionDisposer;
-  Uri? launchUri;

  @override
  void initState() {
@@ -98,7 +100,7 @@ class RootState extends State<Root> with WidgetsBindingObserver {
  void handleDeepLinking(Uri? uri) async {
    if (uri == null || !mounted) return;

-    launchUri = uri;
+    widget.linkViewModel.currentLink = uri;

    bool requireAuth = await widget.authService.requireAuth();

@@ -112,7 +114,7 @@ class RootState extends State<Root> with WidgetsBindingObserver {
      (AuthenticationState state) {
        if (state == AuthenticationState.allowed) {
          if (widget.appStore.wallet == null) {
-            waitForWalletInstance(context, launchUri!);
+            waitForWalletInstance(context);
          } else {
            _navigateToDeepLinkScreen();
          }
@@ -150,6 +152,8 @@ class RootState extends State<Root> with WidgetsBindingObserver {

  @override
  Widget build(BuildContext context) {
+    // this only happens when the app has been in the background for some time
+    // this does NOT trigger when the app is started from the "closed" state!
    if (_isInactive && !_postFrameCallback && _requestAuth) {
      _postFrameCallback = true;
      WidgetsBinding.instance.addPostFrameCallback((_) {
@@ -158,40 +162,38 @@ class RootState extends State<Root> with WidgetsBindingObserver {
          arguments: (bool isAuthenticatedSuccessfully, AuthPageState auth) {
            if (!isAuthenticatedSuccessfully) {
              return;
+            }
+            final useTotp = widget.appStore.settingsStore.useTOTP2FA;
+            final shouldUseTotp2FAToAccessWallets =
+                widget.appStore.settingsStore.shouldRequireTOTP2FAForAccessingWallet;
+            if (useTotp && shouldUseTotp2FAToAccessWallets) {
+              _reset();
+              auth.close(
+                route: Routes.totpAuthCodePage,
+                arguments: TotpAuthArgumentsModel(
+                  onTotpAuthenticationFinished:
+                      (bool isAuthenticatedSuccessfully, TotpAuthCodePageState totpAuth) {
+                    if (!isAuthenticatedSuccessfully) {
+                      return;
+                    }
+                    _reset();
+                    totpAuth.close(
+                      route: widget.linkViewModel.getRouteToGo(),
+                      arguments: widget.linkViewModel.getRouteArgs(),
+                    );
+                    widget.linkViewModel.currentLink = null;
+                  },
+                  isForSetup: false,
+                  isClosable: false,
+                ),
+              );
            } else {
-              final useTotp = widget.appStore.settingsStore.useTOTP2FA;
-              final shouldUseTotp2FAToAccessWallets =
-                  widget.appStore.settingsStore.shouldRequireTOTP2FAForAccessingWallet;
-              if (useTotp && shouldUseTotp2FAToAccessWallets) {
-                _reset();
-                auth.close(
-                  route: Routes.totpAuthCodePage,
-                  arguments: TotpAuthArgumentsModel(
-                    onTotpAuthenticationFinished:
-                        (bool isAuthenticatedSuccessfully, TotpAuthCodePageState totpAuth) {
-                      if (!isAuthenticatedSuccessfully) {
-                        return;
-                      }
-                      _reset();
-                      totpAuth.close(
-                        route: _getRouteToGo(),
-                        arguments:
-                            isWalletConnectLink ? launchUri : PaymentRequest.fromUri(launchUri),
-                      );
-                      launchUri = null;
-                    },
-                    isForSetup: false,
-                    isClosable: false,
-                  ),
-                );
-              } else {
-                _reset();
-                auth.close(
-                  route: _getRouteToGo(),
-                  arguments: isWalletConnectLink ? launchUri : PaymentRequest.fromUri(launchUri),
-                );
-                launchUri = null;
-              }
+              _reset();
+              auth.close(
+                route: widget.linkViewModel.getRouteToGo(),
+                arguments: widget.linkViewModel.getRouteArgs(),
+              );
+              widget.linkViewModel.currentLink = null;
            }
          },
        );
@@ -216,36 +218,7 @@ class RootState extends State<Root> with WidgetsBindingObserver {
    _isInactiveController.add(value);
  }

-  bool _isValidPaymentUri() => launchUri?.path.isNotEmpty ?? false;
-
-  bool get isWalletConnectLink => launchUri?.authority == 'wc';
-
-  String? _getRouteToGo() {
-    if (isWalletConnectLink) {
-      if (isEVMCompatibleChain(widget.appStore.wallet!.type)) {
-        _nonETHWalletErrorToast(S.current.switchToEVMCompatibleWallet);
-        return null;
-      }
-      return Routes.walletConnectConnectionsListing;
-    } else if (_isValidPaymentUri()) {
-      return Routes.send;
-    } else {
-      return null;
-    }
-  }
-
-  Future<void> _nonETHWalletErrorToast(String message) async {
-    Fluttertoast.showToast(
-      msg: message,
-      toastLength: Toast.LENGTH_LONG,
-      gravity: ToastGravity.SNACKBAR,
-      backgroundColor: Colors.black,
-      textColor: Colors.white,
-      fontSize: 16.0,
-    );
-  }
-
-  void waitForWalletInstance(BuildContext context, Uri tempLaunchUri) {
+  void waitForWalletInstance(BuildContext context) {
    WidgetsBinding.instance.addPostFrameCallback((_) {
      if (context.mounted) {
        _walletReactionDisposer = reaction(
@@ -263,14 +236,6 @@ class RootState extends State<Root> with WidgetsBindingObserver {
  }

  void _navigateToDeepLinkScreen() {
-    if (_getRouteToGo() != null) {
-      WidgetsBinding.instance.addPostFrameCallback((_) {
-        widget.navigatorKey.currentState?.pushNamed(
-          _getRouteToGo()!,
-          arguments: isWalletConnectLink ? launchUri : PaymentRequest.fromUri(launchUri),
-        );
-        launchUri = null;
-      });
-    }
+    widget.linkViewModel.handleLink();
  }
 }
@@ -35,6 +35,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
 import 'package:mobx/mobx.dart';
 import 'package:smooth_page_indicator/smooth_page_indicator.dart';
+import 'package:cw_core/crypto_currency.dart';
+import 'package:url_launcher/url_launcher.dart';

 class SendPage extends BasePage {
  SendPage({
@@ -420,12 +422,10 @@ class SendPage extends BasePage {
    }

    reaction((_) => sendViewModel.state, (ExecutionState state) {
-
      if (dialogContext != null && dialogContext?.mounted == true) {
        Navigator.of(dialogContext!).pop();
      }

-
      if (state is FailureState) {
        WidgetsBinding.instance.addPostFrameCallback((_) {
          showPopUp<void>(
@@ -460,10 +460,10 @@ class SendPage extends BasePage {
                      outputs: sendViewModel.outputs,
                      rightButtonText: S.of(_dialogContext).send,
                      leftButtonText: S.of(_dialogContext).cancel,
-                      actionRightButton: () {
+                      actionRightButton: () async {
                        Navigator.of(_dialogContext).pop();
                        sendViewModel.commitTransaction();
-                        showPopUp<void>(
+                        await showPopUp<void>(
                            context: context,
                            builder: (BuildContext _dialogContext) {
                              return Observer(builder: (_) {
@@ -481,12 +481,14 @@ class SendPage extends BasePage {
                                      sendViewModel.selectedCryptoCurrency.toString());

                                  final waitMessage = sendViewModel.walletType == WalletType.solana
-                                      ? '. ${S.of(_dialogContext).waitFewSecondForTxUpdate}' : '';
+                                      ? '. ${S.of(_dialogContext).waitFewSecondForTxUpdate}'
+                                      : '';

                                  final newContactMessage = newContactAddress != null
-                                      ? '\n${S.of(_dialogContext).add_contact_to_address_book}' : '';
+                                      ? '\n${S.of(_dialogContext).add_contact_to_address_book}'
+                                      : '';

-                                  final alertContent =
+                                  String alertContent =
                                      "$successMessage$waitMessage$newContactMessage";

                                  if (newContactAddress != null) {
@@ -509,6 +511,10 @@ class SendPage extends BasePage {
                                          newContactAddress = null;
                                        });
                                  } else {
+                                    if (initialPaymentRequest?.callbackMessage?.isNotEmpty ??
+                                        false) {
+                                      alertContent = initialPaymentRequest!.callbackMessage!;
+                                    }
                                    return AlertWithOneAction(
                                        alertTitle: '',
                                        alertContent: alertContent,
@@ -523,6 +529,20 @@ class SendPage extends BasePage {
                                return Offstage();
                              });
                            });
+                        if (state is TransactionCommitted) {
+                          if (initialPaymentRequest?.callbackUrl?.isNotEmpty ?? false) {
+                            // wait a second so it's not as jarring:
+                            await Future.delayed(Duration(seconds: 1));
+                            try {
+                              launchUrl(
+                                Uri.parse(initialPaymentRequest!.callbackUrl!),
+                                mode: LaunchMode.externalApplication,
+                              );
+                            } catch (e) {
+                              print(e);
+                            }
+                          }
+                        }
                      },
                      actionLeftButton: () => Navigator.of(_dialogContext).pop());
                });
@@ -1,19 +1,29 @@
+import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/nano/nano.dart';

 class PaymentRequest {
-  PaymentRequest(this.address, this.amount, this.note, this.scheme);
+  PaymentRequest(this.address, this.amount, this.note, this.scheme, {this.callbackUrl, this.callbackMessage});

  factory PaymentRequest.fromUri(Uri? uri) {
    var address = "";
    var amount = "";
    var note = "";
    var scheme = "";
+    String? callbackUrl;
+    String? callbackMessage;

    if (uri != null) {
-      address = uri.path;
+      address = uri.queryParameters['address'] ?? uri.path;
      amount = uri.queryParameters['tx_amount'] ?? uri.queryParameters['amount'] ?? "";
      note = uri.queryParameters['tx_description'] ?? uri.queryParameters['message'] ?? "";
      scheme = uri.scheme;
+      callbackUrl = uri.queryParameters['callback'];
+      callbackMessage = uri.queryParameters['callbackMessage'];
+    }
+
+    if (scheme == "nano-gpt") {
+      // treat as nano so filling out the address works:
+      scheme = "nano";
    }

    if (nano != null) {
@@ -26,11 +36,20 @@ class PaymentRequest {
      }
    }

-    return PaymentRequest(address, amount, note, scheme);
+    return PaymentRequest(
+      address,
+      amount,
+      note,
+      scheme,
+      callbackUrl: callbackUrl,
+      callbackMessage: callbackMessage,
+    );
  }

  final String address;
  final String amount;
  final String note;
  final String scheme;
+  final String? callbackUrl;
+  final String? callbackMessage;
 }
@@ -0,0 +1,118 @@
+import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/reactions/wallet_connect.dart';
+import 'package:cake_wallet/routes.dart';
+import 'package:cake_wallet/store/app_store.dart';
+import 'package:cake_wallet/store/authentication_store.dart';
+import 'package:cake_wallet/store/settings_store.dart';
+import 'package:cake_wallet/utils/payment_request.dart';
+import 'package:flutter/material.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+import 'package:mobx/mobx.dart';
+
+part 'link_view_model.g.dart';
+
+class LinkViewModel = LinkViewModelBase with _$LinkViewModel;
+
+abstract class LinkViewModelBase with Store {
+  LinkViewModelBase({
+    required this.settingsStore,
+    required this.appStore,
+    required this.authenticationStore,
+    required this.navigatorKey,
+  }) {}
+
+  final SettingsStore settingsStore;
+  final AppStore appStore;
+  final AuthenticationStore authenticationStore;
+  final GlobalKey<NavigatorState> navigatorKey;
+  Uri? currentLink;
+
+  bool get _isValidPaymentUri => currentLink?.path.isNotEmpty ?? false;
+  bool get isWalletConnectLink => currentLink?.authority == 'wc';
+  bool get isNanoGptLink => currentLink?.scheme == 'nano-gpt';
+
+  String? getRouteToGo() {
+    if (isWalletConnectLink) {
+      if (!isEVMCompatibleChain(appStore.wallet!.type)) {
+        _errorToast(S.current.switchToEVMCompatibleWallet);
+        return null;
+      }
+      return Routes.walletConnectConnectionsListing;
+    }
+
+    if (authenticationStore.state == AuthenticationState.uninitialized) {
+      return null;
+    }
+
+    if (isNanoGptLink) {
+      switch (currentLink?.authority ?? '') {
+        case "exchange":
+          return Routes.exchange;
+        case "send":
+          return Routes.send;
+        case "buy":
+          return Routes.buySellPage;
+      }
+    }
+
+    if (_isValidPaymentUri) {
+      return Routes.send;
+    }
+
+    return null;
+  }
+
+  dynamic getRouteArgs() {
+    if (isWalletConnectLink) {
+      return currentLink;
+    }
+
+    if (isNanoGptLink) {
+      switch (currentLink?.authority ?? '') {
+        case "exchange":
+        case "send":
+          return PaymentRequest.fromUri(currentLink);
+        case "buy":
+          return true;
+      }
+    }
+
+    if (_isValidPaymentUri) {
+      return PaymentRequest.fromUri(currentLink);
+    }
+
+    return null;
+  }
+
+  Future<void> _errorToast(String message, {double fontSize = 16}) async {
+    Fluttertoast.showToast(
+      msg: message,
+      toastLength: Toast.LENGTH_LONG,
+      gravity: ToastGravity.SNACKBAR,
+      backgroundColor: Colors.black,
+      textColor: Colors.white,
+      fontSize: fontSize,
+    );
+  }
+
+  Future<void> handleLink() async {
+    String? route = getRouteToGo();
+    dynamic args = getRouteArgs();
+    if (route != null) {
+      if (appStore.wallet == null) {
+        return;
+      }
+
+      if (isNanoGptLink) {
+        if (route == Routes.buySellPage || route == Routes.exchange) {
+          await _errorToast(S.current.nano_gpt_thanks_message, fontSize: 14);
+        }
+      }
+      currentLink = null;
+      navigatorKey.currentState?.pushNamed(
+        route,
+        arguments: args,
+      );
+    }
+  }
+}