get message of the day into verification app

verification/ios/Runner.xcodeproj/project.pbxproj

@@ -157,7 +157,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {

verification/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

verification/lib/home_page.dart

@@ -6,6 +6,7 @@ import 'dart:typed_data';
 import 'package:connectivity/connectivity.dart';
 import 'package:digital_3g_common/backend_switcher.dart';
 import 'package:digital_3g_common/content_dialog.dart';
+import 'package:digital_3g_common/theme.dart';
 import 'package:digital_3g_common/ui.dart';
 import 'package:digital_3g_common/verification_api.dart';
 import 'package:flutter/material.dart';
@@ -387,21 +388,6 @@ class _HomePageState extends State<HomePage> {
     );
   }
 
-  @override
-  void didChangeDependencies() async {
-    _bloc = BlocProvider.of<VerificationBloc>(context);
-    final connected = await Connectivity().checkConnectivity();
-    setState(() => _disconnected = connected == ConnectivityResult.none);
-    if (_disconnected) {
-      _throwConnectivityResult(connected);
-    }
-
-    final prefs = await SharedPreferences.getInstance();
-    setState(() => _showHelp = prefs.getBool('show_help') ?? true);
-
-    super.didChangeDependencies();
-  }
-
   @override
   void dispose() {
     _clockTimer?.cancel();
@@ -413,6 +399,7 @@ class _HomePageState extends State<HomePage> {
   @override
   void initState() {
     super.initState();
+    _bloc = BlocProvider.of<VerificationBloc>(context);
     _clockTimer = Timer.periodic(const Duration(seconds: 1), (timer) {
       setState(() {
         _currentDate = DateTime.now();
@@ -421,7 +408,9 @@ class _HomePageState extends State<HomePage> {
     _refreshTimer = Timer.periodic(const Duration(seconds: 30), (timer) {
       _bloc!.onCheck();
     });
-    _connectionListener = Connectivity().onConnectivityChanged.listen(_throwConnectivityResult);
+    _initConnectivity();
+    _initPreferences();
+    _loadMotd();
   }
 
   @override
@@ -434,6 +423,40 @@ class _HomePageState extends State<HomePage> {
     }
   }
 
+  Future<void> _initConnectivity() async {
+    final connected = await Connectivity().checkConnectivity();
+    setState(() => _disconnected = connected == ConnectivityResult.none);
+    if (_disconnected) {
+      _throwConnectivityResult(connected);
+    }
+    _connectionListener = Connectivity().onConnectivityChanged.listen(_throwConnectivityResult);
+  }
+
+  Future<void> _initPreferences() async {
+    final prefs = await SharedPreferences.getInstance();
+    setState(() => _showHelp = prefs.getBool('show_help') ?? true);
+  }
+
+  Future<void> _loadMotd() async {
+    final message = await _bloc!.api!.getMotd();
+    if (message.isEmpty) return;
+
+    ScaffoldMessenger.of(context).showSnackBar(SnackBar(
+      content: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            'Systemnachricht',
+            style: Theme.of(context).textTheme.headline5!.copyWith(color: magenta),
+          ),
+          Text(message)
+        ],
+      ),
+      duration: const Duration(seconds: 20),
+    ));
+  }
+
   void _onDeleteTicket() async {
     final result = await showDialog<bool>(
       context: context,

verification/lib/verification_bloc.dart

@@ -31,6 +31,7 @@ class VerificationBloc extends Bloc<VerificationEvent, VerificationState> {
     _initVerificationStore().then((_) => _initTicketFile().then((value) => _loadTicket()));
   }
 
+  VerificationApi? get api => _api;
   VerificationErrorType? get error => _error;
   String? get ticket => _ticket;
   VerificationResponse? get verification => _verification;