multi: misc improvements for swapping chains

lib/config/dependencies.dart

@@ -1,5 +1,4 @@
 import 'package:get_it/get_it.dart';
-import 'package:sidesail/app.dart';
 import 'package:sidesail/config/sidechains.dart';
 import 'package:sidesail/providers/balance_provider.dart';
 import 'package:sidesail/providers/transactions_provider.dart';
@@ -13,21 +12,15 @@ import 'package:sidesail/storage/secure_store.dart';
 
 // register all global dependencies, for use in views, or in view models
 // each dependency can only be registered once
-Future<void> initGetitDependencies(Sidechain chain) async {
+Future<void> initGetitDependencies(Sidechain initialChain) async {
   final mainFuture = MainchainRPCLive.create();
-  final ethFuture = EthereumRPCLive.create();
-  await setSidechainRPC(chain);
+  await _initSidechainRPC(initialChain);
   final mainRPC = await mainFuture;
-  final ethRPC = await ethFuture;
 
   GetIt.I.registerLazySingleton<MainchainRPC>(
     () => mainRPC,
   );
 
-  GetIt.I.registerLazySingleton<EthereumRPC>(
-    () => ethRPC,
-  );
-
   GetIt.I.registerLazySingleton<AppRouter>(
     () => AppRouter(),
   );
@@ -46,31 +39,51 @@ Future<void> initGetitDependencies(Sidechain chain) async {
   );
 }
 
-// register all global dependencies, for use in views, or in view models
-// each dependency can only be registered once
-Future<void> setSidechainRPC(Sidechain chain) async {
+// register all rpc connections. We attempt to create all
+// rpcs in parallell, so they're ready instantly when swapping
+// we can also query the balance
+Future<void> _initSidechainRPC(Sidechain chain) async {
+  final ethFuture = EthereumRPCLive.create();
+  final testFuture = TestchainRPCLive.create();
+
+  final ethRPC = await ethFuture;
+  final testRPC = await testFuture;
+
+  GetIt.I.registerLazySingleton<TestchainRPC>(
+    () => testRPC,
+  );
+  GetIt.I.registerLazySingleton<EthereumRPC>(
+    () => ethRPC,
+  );
+
   SidechainRPC sidechainRPC;
   switch (chain.type) {
     case SidechainType.testChain:
-      final testchainRPC = await TestchainRPCLive.create();
-      if (GetIt.I.isRegistered<TestchainRPC>()) {
-        GetIt.I.unregister<TestchainRPC>();
-      }
-      GetIt.I.registerLazySingleton<TestchainRPC>(
-        () => testchainRPC,
-      );
-      sidechainRPC = testchainRPC;
+      sidechainRPC = testRPC;
       break;
 
     case SidechainType.ethereum:
-      final ethRPC = await EthereumRPCLive.create();
-      if (GetIt.I.isRegistered<EthereumRPC>()) {
-        GetIt.I.unregister<EthereumRPC>();
-      }
-      GetIt.I.registerLazySingleton<EthereumRPC>(
-        () => ethRPC,
-      );
+      sidechainRPC = ethRPC;
+      break;
+  }
+
+  GetIt.I.registerLazySingleton<SidechainRPC>(
+    () => sidechainRPC,
+  );
+}
 
+// swap out the SidechainRPC type in GetIt with the appropriate
+// rpc. All of them are already registered, so this is pretty quick
+void swapSidechainRPC(Sidechain chain) async {
+  SidechainRPC sidechainRPC;
+  switch (chain.type) {
+    case SidechainType.testChain:
+      final testchainRPC = GetIt.I.get<TestchainRPC>();
+      sidechainRPC = testchainRPC;
+      break;
+
+    case SidechainType.ethereum:
+      final ethRPC = GetIt.I.get<EthereumRPC>();
       sidechainRPC = ethRPC;
       break;
   }
@@ -81,6 +94,4 @@ Future<void> setSidechainRPC(Sidechain chain) async {
   GetIt.I.registerLazySingleton<SidechainRPC>(
     () => sidechainRPC,
   );
-
-  SailApp.sailAppKey.currentState?.rebuildUI();
 }

lib/pages/tabs/ethereum/ethereum_rpc_tab_page.dart

@@ -16,8 +16,7 @@ class EthereumRPCTabPage extends StatelessWidget {
     return const SailPage(
       scrollable: true,
       title: 'Ethereum RPC',
-      subtitle:
-          'Here you can call eth rpcs directly to the eth-sidechain. Try typing in "eth_blockNumber" in the input below.',
+      subtitle: 'Call RPCs directly to the Ethereum sidechain. Try typing in "eth_blockNumber" in the input below.',
       body: Padding(
         padding: EdgeInsets.only(bottom: SailStyleValues.padding30),
         child: Column(

lib/pages/tabs/home_page.dart

@@ -16,20 +16,32 @@ import 'package:stacked/stacked.dart';
 
 @RoutePage()
 class HomePage extends StatelessWidget {
-  SidechainRPC get _sideRPC => GetIt.I.get<SidechainRPC>();
-
   const HomePage({super.key});
 
   @override
   Widget build(BuildContext context) {
-    final routes = routesForChain(_sideRPC.chain);
     final theme = SailTheme.of(context);
+    const routes = [
+      // common routes
+      SidechainExplorerTabRoute(),
+      // testchain routes
+      DashboardTabRoute(),
+      TransferMainchainTabRoute(),
+      WithdrawalBundleTabRoute(),
+      BlindMergedMiningTabRoute(),
+
+      // ethereum routes
+      EthereumRPCTabRoute(),
+
+      // trailing common routes
+      NodeSettingsTabRoute(),
+      ThemeSettingsTabRoute(),
+    ];
 
     return auto_router.AutoTabsRouter.builder(
       homeIndex: 1,
       routes: routes,
-      builder: (context, children, _) {
-        final tabsRouter = auto_router.AutoTabsRouter.of(context);
+      builder: (context, children, tabsRouter) {
         return Scaffold(
           backgroundColor: theme.colors.background,
           body: SideNav(
@@ -41,40 +53,6 @@ class HomePage extends StatelessWidget {
       },
     );
   }
-
-  List<auto_router.PageRouteInfo<dynamic>> routesForChain(Sidechain chain) {
-    final preRoutes = [
-      const SidechainExplorerTabRoute(),
-    ];
-    final postRoutes = [
-      const NodeSettingsTabRoute(),
-      const ThemeSettingsTabRoute(),
-    ];
-
-    List<auto_router.PageRouteInfo<dynamic>> chainRoutes = [];
-    switch (chain.type) {
-      case SidechainType.testChain:
-        chainRoutes = [
-          const DashboardTabRoute(),
-          const TransferMainchainTabRoute(),
-          const WithdrawalBundleTabRoute(),
-          const BlindMergedMiningTabRoute(),
-        ];
-        break;
-
-      case SidechainType.ethereum:
-        chainRoutes = [
-          const EthereumRPCTabRoute(),
-        ];
-        break;
-    }
-
-    return [
-      ...preRoutes,
-      ...chainRoutes,
-      ...postRoutes,
-    ];
-  }
 }
 
 class SideNav extends StatefulWidget {
@@ -222,9 +200,9 @@ class _SideNavState extends State<SideNav> {
           NavEntry(
             title: '${viewModel.chain.name} Dashboard',
             icon: SailSVGAsset.iconDashboardTab,
-            selected: tabsRouter.activeIndex == 1,
+            selected: tabsRouter.activeIndex == 5,
             onPressed: () {
-              tabsRouter.setActiveIndex(1);
+              tabsRouter.setActiveIndex(5);
             },
           ),
         ];

lib/pages/tabs/sidechain_explorer_tab_page.dart

@@ -4,13 +4,18 @@ import 'package:get_it/get_it.dart';
 import 'package:sail_ui/sail_ui.dart';
 import 'package:sidesail/config/sidechains.dart';
 import 'package:sidesail/providers/balance_provider.dart';
+import 'package:sidesail/rpc/rpc_ethereum.dart';
 import 'package:sidesail/rpc/rpc_sidechain.dart';
+import 'package:sidesail/rpc/rpc_testchain.dart';
 import 'package:sidesail/widgets/containers/chain_overview_card.dart';
 import 'package:sidesail/widgets/containers/tabs/dashboard_tab_widgets.dart';
 import 'package:stacked/stacked.dart';
 
 @RoutePage()
 class SidechainExplorerTabPage extends StatelessWidget {
+  TestchainRPC get test => GetIt.I.get<TestchainRPC>();
+  EthereumRPC get eth => GetIt.I.get<EthereumRPC>();
+
   const SidechainExplorerTabPage({super.key});
 
   @override
@@ -36,19 +41,15 @@ class SidechainExplorerTabPage extends StatelessWidget {
                           unconfirmedBalance: viewModel.pendingBalance,
                           highlighted: false,
                           currentChain: viewModel.chain.type == SidechainType.testChain,
-                          onPressed: () {
-                            viewModel.setSidechainRPC(TestSidechain());
-                          },
+                          onPressed: () => viewModel.setSidechainRPC(TestSidechain()),
                         ),
                         ChainOverviewCard(
                           chain: EthereumSidechain(),
                           confirmedBalance: viewModel.balance,
                           unconfirmedBalance: viewModel.pendingBalance,
                           highlighted: false,
                           currentChain: viewModel.chain.type == SidechainType.ethereum,
-                          onPressed: () {
-                            viewModel.setSidechainRPC(EthereumSidechain());
-                          },
+                          onPressed: () => viewModel.setSidechainRPC(EthereumSidechain()),
                         ),
                       ],
                     ),
@@ -83,6 +84,7 @@ class SidechainExplorerTabViewModel extends BaseViewModel {
 
   void setSidechainRPC(Sidechain chain) {
     _sideRPC.setChain(chain);
+    notifyListeners();
   }
 
   @override

lib/pages/tabs/testchain/mainchain/withdrawal_bundle_tab_page.dart

@@ -283,6 +283,7 @@ class _UnbundledWithdrawalViewState extends State<UnbundledWithdrawalView> {
                 ),
               ),
               copyable: false,
+              label: '',
               value:
                   '${satoshiToBTC(widget.withdrawal.amountSatoshi).toStringAsFixed(8)} BTC to ${widget.withdrawal.address}',
             ),

lib/providers/balance_provider.dart

@@ -20,6 +20,7 @@ class BalanceProvider extends ChangeNotifier {
   BalanceProvider() {
     fetch();
     _startPolling();
+    _rpc.addListener(fetch);
   }
 
   // call this function from anywhere to refresh the balance
@@ -45,5 +46,6 @@ class BalanceProvider extends ChangeNotifier {
     super.dispose();
     // Cancel timer when provider is disposed (never?)
     _timer.cancel();
+    _rpc.removeListener(notifyListeners);
   }
 }

lib/rpc/rpc_sidechain.dart

@@ -15,7 +15,7 @@ abstract class SidechainRPC extends RPCConnection {
   late Sidechain chain;
   void setChain(Sidechain newChain) {
     chain = newChain;
-    setSidechainRPC(newChain);
+    swapSidechainRPC(newChain);
     notifyListeners();
   }
 }