neon: add make AppsBlocStates supply the active AppImplementation

packages/neon/neon/lib/src/blocs/apps.dart

@@ -13,7 +13,7 @@ abstract class AppsBlocStates {
 
   BehaviorSubject<Result<NotificationsAppInterface?>> get notificationsAppImplementation;
 
-  BehaviorSubject<String> get activeAppID;
+  BehaviorSubject<AppImplementation> get activeApp;
 
   BehaviorSubject get openNotifications;
 
@@ -47,8 +47,8 @@ class AppsBloc extends InteractiveBloc implements AppsBlocEvents, AppsBlocStates
                 initialApp = result.requireData.first.id;
               }
             }
-            if (!activeAppID.hasValue) {
-              await setActiveApp(initialApp!);
+            if (!activeApp.hasValue && initialApp != null) {
+              await setActiveApp(initialApp);
             }
           }),
         );
@@ -132,7 +132,7 @@ class AppsBloc extends InteractiveBloc implements AppsBlocEvents, AppsBlocStates
     unawaited(apps.close());
     unawaited(appImplementations.close());
     unawaited(notificationsAppImplementation.close());
-    unawaited(activeAppID.close());
+    unawaited(activeApp.close());
     unawaited(openNotifications.close());
     unawaited(appVersions.close());
 
@@ -144,7 +144,7 @@ class AppsBloc extends InteractiveBloc implements AppsBlocEvents, AppsBlocStates
   }
 
   @override
-  BehaviorSubject<String> activeAppID = BehaviorSubject<String>();
+  BehaviorSubject<AppImplementation> activeApp = BehaviorSubject<AppImplementation>();
 
   @override
   BehaviorSubject<Result<Iterable<AppImplementation<Bloc, NextcloudAppSpecificOptions>>>> appImplementations =
@@ -176,14 +176,17 @@ class AppsBloc extends InteractiveBloc implements AppsBlocEvents, AppsBlocStates
 
   @override
   Future setActiveApp(final String appID) async {
+    if (appID == 'notifications') {
+      openNotifications.add(null);
+      return;
+    }
+
     final apps = await appImplementations.firstWhere((final a) => a.hasData);
-    if (apps.requireData.tryFind(appID) != null) {
-      // TODO: make activeAppID distinct
-      if (activeAppID.valueOrNull != appID) {
-        activeAppID.add(appID);
+    final app = apps.requireData.tryFind(appID);
+    if (app != null) {
+      if (activeApp.valueOrNull?.id != appID) {
+        activeApp.add(app);
       }
-    } else if (appID == 'notifications') {
-      openNotifications.add(null);
     } else {
       throw Exception('App $appID not found');
     }

packages/neon/neon/lib/src/pages/home.dart

@@ -100,9 +100,9 @@ class _HomePageState extends State<HomePage> {
   @override
   Widget build(final BuildContext context) => ResultBuilder<Iterable<AppImplementation>>.behaviorSubject(
         stream: _appsBloc.appImplementations,
-        builder: (final context, final appImplementations) => StreamBuilder<String>(
-          stream: _appsBloc.activeAppID,
-          builder: (final context, final activeAppIDSnapshot) => OptionBuilder<NavigationMode>(
+        builder: (final context, final appImplementations) => StreamBuilder<AppImplementation>(
+          stream: _appsBloc.activeApp,
+          builder: (final context, final activeAppSnapshot) => OptionBuilder<NavigationMode>(
             option: _globalOptions.navigationMode,
             builder: (final context, final navigationMode) {
               final drawerAlwaysVisible = navigationMode == NavigationMode.drawerAlwaysVisible;
@@ -124,9 +124,9 @@ class _HomePageState extends State<HomePage> {
                           ),
                         ),
                       ] else ...[
-                        if (activeAppIDSnapshot.hasData) ...[
+                        if (activeAppSnapshot.hasData) ...[
                           Expanded(
-                            child: appImplementations.requireData.find(activeAppIDSnapshot.requireData).page,
+                            child: activeAppSnapshot.requireData.page,
                           ),
                         ],
                       ],

packages/neon/neon/lib/src/widgets/app_bar.dart

@@ -23,18 +23,18 @@ class NeonAppBar extends StatelessWidget implements PreferredSizeWidget {
 
     return ResultBuilder<Iterable<AppImplementation>>.behaviorSubject(
       stream: appsBloc.appImplementations,
-      builder: (final context, final appImplementations) => StreamBuilder<String?>(
-        stream: appsBloc.activeAppID,
-        builder: (final context, final activeAppIDSnapshot) => AppBar(
+      builder: (final context, final appImplementations) => StreamBuilder<AppImplementation>(
+        stream: appsBloc.activeApp,
+        builder: (final context, final activeAppSnapshot) => AppBar(
           title: Column(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
               Row(
                 children: [
-                  if (appImplementations.hasData && activeAppIDSnapshot.hasData) ...[
+                  if (activeAppSnapshot.hasData) ...[
                     Flexible(
                       child: Text(
-                        appImplementations.requireData.find(activeAppIDSnapshot.data!).name(context),
+                        activeAppSnapshot.requireData.name(context),
                       ),
                     ),
                   ],

packages/neon/neon/lib/src/widgets/drawer.dart

@@ -61,7 +61,7 @@ class __NeonDrawerState extends State<_NeonDrawer> with SingleTickerProviderStat
     _appsBloc = _accountsBloc.activeAppsBloc;
 
     _apps = widget.apps.toList();
-    _activeApp = _apps.indexWhere((final app) => app.id == _appsBloc.activeAppID.valueOrNull);
+    _activeApp = _apps.indexWhere((final app) => app.id == _appsBloc.activeApp.valueOrNull?.id);
 
     _tabController = TabController(
       vsync: this,