fix: tor switch properly dismisses fullscreen loading dialog

fix: connectToNode after tor startup on app start

lib/src/screens/start_tor/start_tor_page.dart

@@ -27,22 +27,18 @@ class StartTorPage extends BasePage {
         mainAxisAlignment: MainAxisAlignment.center,
         crossAxisAlignment: CrossAxisAlignment.center,
         children: [
-          Observer(
-            builder: (_) {
-              return Column(
-                children: [
-                  SizedBox(width: double.maxFinite),
-                  if (startTorViewModel.isLoading) ...[
-                    CircularProgressIndicator(),
-                    SizedBox(height: 20),
-                    _buildWaitingText(context),
-                  ],
-                  if (startTorViewModel.showOptions) ...[
-                    _buildOptionsButtons(context),
-                  ],
+          Column(
+            children: [
+              SizedBox(width: double.maxFinite),
+              if (startTorViewModel.isLoading) ...[
+                CircularProgressIndicator(),
+                SizedBox(height: 20),
+                _buildWaitingText(context),
                 ],
-              );
-            },
+              if (startTorViewModel.showOptions) ...[
+                _buildOptionsButtons(context),
+              ],
+            ],
           ),
         ],
       ),

lib/utils/tor.dart

@@ -1,6 +1,10 @@
+import 'dart:async';
+import 'dart:isolate';
+
 import 'package:cw_core/utils/proxy_wrapper.dart';
 import 'package:cw_core/utils/print_verbose.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:tor/tor.dart';
 
 bool didTorStart = false;
@@ -9,12 +13,13 @@ Future<void> ensureTorStopped({required BuildContext? context}) async {
     printV("Tor hasn't been initialized yet, so it can't be stopped.");
     return;
   }
-  if (context != null) showFullscreenDialog(context);
+  BuildContext? dialogContext;
+  if (context != null) dialogContext = await showFullscreenDialog(context);
   didTorStart = false;
   printV("Stopping tor");
   await CakeTor.instance.stop();
   printV("Tor stopped");
-  if (context != null) dismissFullscreenDialog(context);
+  if (context != null) dismissFullscreenDialog(dialogContext!);
 }
 
 Future<void> ensureTorStarted({required BuildContext? context}) async {
@@ -22,22 +27,37 @@ Future<void> ensureTorStarted({required BuildContext? context}) async {
     printV("Tor has already started");
     return;
   }
-  if (context != null) showFullscreenDialog(context);
+  BuildContext? dialogContext;
+  if (context != null) dialogContext = await showFullscreenDialog(context);
   didTorStart = true;
   printV("Initializing tor");
   await Tor.init();
   printV("Starting tor");
+  // var rootToken = RootIsolateToken.instance!;
+  // await Isolate.run(() async {
+  //   BackgroundIsolateBinaryMessenger.ensureInitialized(rootToken);
+  //   await CakeTor.instance.start();
+  // });
+  // second start is fast but populates the values on current thread
   await CakeTor.instance.start();
   printV("Tor started");
-  if (context != null) dismissFullscreenDialog(context);
+  while (CakeTor.instance.port == -1) {
+    printV("Waiting for tor to start");
+    await Future.delayed(const Duration(seconds: 1));
+  }
+  printV("Tor started on port ${CakeTor.instance.port}");
+  if (context != null) dismissFullscreenDialog(dialogContext!);
 }
 
-Future<void> showFullscreenDialog(BuildContext context) async {
-  await showDialog(
-    context: context,
-    barrierDismissible: false,
-    builder: (context) {
-      return PopScope(
+Future<BuildContext> showFullscreenDialog(BuildContext context) async {
+  BuildContext? dialogContext;
+  unawaited(
+    showDialog(
+      context: context,
+      barrierDismissible: false,
+      builder: (context) {
+        dialogContext = context;
+        return PopScope(
         canPop: false,
         child: Container(
           color: Colors.transparent,
@@ -45,13 +65,17 @@ Future<void> showFullscreenDialog(BuildContext context) async {
             child: CircularProgressIndicator(
               color: Colors.white,
             ),
+            ),
           ),
-        ),
-      );
-    },
+        );
+      },
+    ),
   );
+  await Future.delayed(const Duration(seconds: 1));
+  return dialogContext!;
 }
 
 Future<void> dismissFullscreenDialog(BuildContext context) async {
+  await Future.delayed(const Duration(seconds: 1));
   Navigator.of(context).pop();
 }

lib/view_model/start_tor_view_model.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 
 import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/routes.dart';
+import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cake_wallet/utils/tor.dart';
 import 'package:flutter/material.dart';
@@ -54,6 +55,8 @@ abstract class StartTorViewModelBase with Store {
     }
     await ensureTorStarted(context: null);
     didStartTor = true;
+    final appStore = getIt.get<AppStore>();
+    appStore.wallet?.connectToNode(node: appStore.settingsStore.getCurrentNode(appStore.wallet!.type));
     Navigator.pushReplacementNamed(context, Routes.login);
   }