automatic updating of last timestamp for bloc cache

lib/app.dart

@@ -96,6 +96,7 @@ class _AppState extends State<App> with WidgetsBindingObserver {
       controller: App.bottomNavigator,
       navBarOverlap: const NavBarOverlap.none(),
       backgroundColor: Theme.of(context).colorScheme.primary,
+      handleAndroidBackButtonPress: false,
 
       screenTransitionAnimation: const ScreenTransitionAnimation(curve: Curves.easeOutQuad, duration: Duration(milliseconds: 200)),
       tabs: [

lib/state/app/infrastructure/loadableState/bloc/loadable_state_bloc.dart

@@ -37,6 +37,10 @@ class LoadableStateBloc extends Bloc<LoadableStateEvent, LoadableStateState> {
         : Icons.signal_wifi_connected_no_internet_4
       : Icons.device_unknown;
 
+  Color connectionColor(BuildContext context) => connectivityStatusKnown() && !isConnected()
+      ? Colors.grey.shade600
+      : Theme.of(context).primaryColor;
+
   String connectionText({int? lastUpdated}) => connectivityStatusKnown()
       ? isConnected()
         ? 'Verbindung fehlgeschlagen'

lib/state/app/infrastructure/loadableState/view/loadable_state_error_bar.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
@@ -31,14 +33,6 @@ class LoadableStateErrorBar extends StatelessWidget {
             child: Builder(
               builder: (context) {
                 var bloc = context.watch<LoadableStateBloc>();
-                var status = (
-                  icon: bloc.connectionIcon(),
-                  text: bloc.connectionText(lastUpdated: lastUpdated),
-                  color: bloc.connectivityStatusKnown() && !bloc.isConnected()
-                    ? Colors.grey.shade600
-                    : Theme.of(context).primaryColor
-                );
-
                 return InkWell(
                   onTap: () {
                     if(!bloc.isConnected()) return;
@@ -47,16 +41,9 @@ class LoadableStateErrorBar extends StatelessWidget {
                   child: Container(
                     height: 20,
                     decoration: BoxDecoration(
-                      color: status.color,
-                    ),
-                    child: Row(
-                      mainAxisAlignment: MainAxisAlignment.center,
-                      children: [
-                        Icon(status.icon, size: 14),
-                        const SizedBox(width: 10),
-                        Text(status.text, style: const TextStyle(fontSize: 12))
-                      ],
+                      color: bloc.connectionColor(context),
                     ),
+                    child: LoadableStateErrorBarText(lastUpdated: lastUpdated),
                   ),
                 );
               },
@@ -65,3 +52,41 @@ class LoadableStateErrorBar extends StatelessWidget {
     ),
   );
 }
+
+class LoadableStateErrorBarText extends StatefulWidget {
+  final int? lastUpdated;
+  const LoadableStateErrorBarText({required this.lastUpdated, super.key});
+
+  @override
+  State<LoadableStateErrorBarText> createState() => _LoadableStateErrorBarTextState();
+}
+
+class _LoadableStateErrorBarTextState extends State<LoadableStateErrorBarText> {
+  late Timer _rebuildTimer;
+  @override
+  void initState() {
+    _rebuildTimer = Timer.periodic(const Duration(seconds: 10), (timer) => setState(() {}));
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    var bloc = context.watch<LoadableStateBloc>();
+
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        Icon(bloc.connectionIcon(), size: 14),
+        const SizedBox(width: 10),
+        Text(bloc.connectionText(lastUpdated: widget.lastUpdated), style: const TextStyle(fontSize: 12))
+      ],
+    );
+  }
+
+  @override
+  void dispose() {
+    _rebuildTimer.cancel();
+    super.dispose();
+  }
+}
+

lib/state/app/modules/marianumMessage/bloc/marianum_message_bloc.dart

@@ -7,12 +7,6 @@ sealed class MarianumMessageEvent extends LoadableHydratedBlocEvent<MarianumMess
 class MessageEvent extends MarianumMessageEvent {}
 
 class MarianumMessageBloc extends LoadableHydratedBloc<MarianumMessageEvent, MarianumMessageState, MarianumMessageRepository> {
-  MarianumMessageBloc() {
-    on<MessageEvent>((event, emit) {
-      add(Emit((state) => state.copyWith.messageList(messages: [])));
-    });
-  }
-
   @override
   Future<void> gatherData() async {
     var messages = await repo.getMessages();