Merge branch 'flutter_app'

flutter/android/app/build.gradle

@@ -37,6 +37,7 @@ android {
     ndkVersion flutter.ndkVersion
 
     compileOptions {
+        coreLibraryDesugaringEnabled true
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
@@ -55,6 +56,7 @@ android {
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+        multiDexEnabled true
     }
 
     signingConfigs {
@@ -77,4 +79,9 @@ flutter {
     source '../..'
 }
 
-dependencies {}
+dependencies {
+    implementation 'androidx.window:window:1.0.0'
+    implementation 'androidx.window:window-java:1.0.0'
+
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.2.2'
+}

flutter/android/app/proguard-rules.pro

@@ -0,0 +1,27 @@
+## Gson rules
+# Gson uses generic type information stored in a class file when working with fields. Proguard
+# removes such information by default, so configure it to keep all of it.
+-keepattributes Signature
+
+# For using GSON @Expose annotation
+-keepattributes *Annotation*
+
+# Gson specific classes
+-dontwarn sun.misc.**
+#-keep class com.google.gson.stream.** { *; }
+
+# Prevent proguard from stripping interface information from TypeAdapter, TypeAdapterFactory,
+# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
+-keep class * extends com.google.gson.TypeAdapter
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
+
+# Prevent R8 from leaving Data object members always null
+-keepclassmembers,allowobfuscation class * {
+  @com.google.gson.annotations.SerializedName <fields>;
+}
+
+# Retain generic signatures of TypeToken and its subclasses with R8 version 3.0 and higher.
+-keep,allowobfuscation,allowshrinking class com.google.gson.reflect.TypeToken
+-keep,allowobfuscation,allowshrinking class * extends com.google.gson.reflect.TypeToken

flutter/android/app/src/main/AndroidManifest.xml

@@ -31,6 +31,9 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+
+        <receiver android:exported="false" android:name="com.dexterous.flutterlocalnotifications.ActionBroadcastReceiver" />
+
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data

flutter/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeColor="#00000000"
+        android:strokeWidth="1">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeColor="#00000000"
+        android:strokeWidth="1" />
+</vector>

flutter/android/app/src/main/res/raw/keep.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools" tools:keep="@drawable/*" />

flutter/android/build.gradle

@@ -6,6 +6,7 @@ buildscript {
     }
 
     dependencies {
+        classpath 'com.android.tools.build:gradle:7.3.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

flutter/ios/Runner/AppDelegate.swift

@@ -1,13 +1,27 @@
 import UIKit
 import Flutter
+import flutter_local_notifications
 
 @UIApplicationMain
 @objc class AppDelegate: FlutterAppDelegate {
+
   override func application(
     _ application: UIApplication,
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
+    
+    // This is required to make any communication available in the action isolate.
+    FlutterLocalNotificationsPlugin.setPluginRegistrantCallback { (registry) in
+      GeneratedPluginRegistrant.register(with: registry)
+    }
+    
+    if #available(iOS 10.0, *) {
+      UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
+    }
+    
     GeneratedPluginRegistrant.register(with: self)
+    
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
+
 }

flutter/lib/api/api_client.dart

@@ -7,11 +7,12 @@ import 'package:simplecloudnotifier/models/client.dart';
 import 'package:simplecloudnotifier/models/keytoken.dart';
 import 'package:simplecloudnotifier/models/subscription.dart';
 import 'package:simplecloudnotifier/models/user.dart';
+import 'package:simplecloudnotifier/state/app_auth.dart';
 import 'package:simplecloudnotifier/state/application_log.dart';
 import 'package:simplecloudnotifier/state/globals.dart';
 import 'package:simplecloudnotifier/state/request_log.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
 import 'package:simplecloudnotifier/state/token_source.dart';
 import 'package:simplecloudnotifier/utils/toaster.dart';
 
@@ -211,7 +212,21 @@ class APIClient {
     );
   }
 
-  static Future<(String, List<Message>)> getMessageList(TokenSource auth, String pageToken, {int? pageSize, List<String>? channelIDs}) async {
+  static Future<ChannelWithSubscription> updateChannel(AppAuth auth, String cid, {String? displayName, String? descriptionName}) async {
+    return await _request(
+      name: 'updateChannel',
+      method: 'PATCH',
+      relURL: 'users/${auth.getUserID()}/channels/${cid}',
+      jsonBody: {
+        if (displayName != null) 'display_name': displayName,
+        if (descriptionName != null) 'description_name': descriptionName,
+      },
+      fn: ChannelWithSubscription.fromJson,
+      authToken: auth.getToken(),
+    );
+  }
+
+  static Future<(String, List<SCNMessage>)> getMessageList(TokenSource auth, String pageToken, {int? pageSize, List<String>? channelIDs}) async {
     return await _request(
       name: 'getMessageList',
       method: 'GET',
@@ -221,18 +236,18 @@ class APIClient {
         if (pageSize != null) 'page_size': pageSize.toString(),
         if (channelIDs != null) 'channel_id': channelIDs.join(","),
       },
-      fn: (json) => Message.fromPaginatedJsonArray(json, 'messages', 'next_page_token'),
+      fn: (json) => SCNMessage.fromPaginatedJsonArray(json, 'messages', 'next_page_token'),
       authToken: auth.getToken(),
     );
   }
 
-  static Future<Message> getMessage(TokenSource auth, String msgid) async {
+  static Future<SCNMessage> getMessage(TokenSource auth, String msgid) async {
     return await _request(
       name: 'getMessage',
       method: 'GET',
       relURL: 'messages/$msgid',
       query: {},
-      fn: Message.fromJson,
+      fn: SCNMessage.fromJson,
       authToken: auth.getToken(),
     );
   }
@@ -247,6 +262,16 @@ class APIClient {
     );
   }
 
+  static Future<List<Subscription>> getChannelSubscriptions(TokenSource auth, String cid) async {
+    return await _request(
+      name: 'getChannelSubscriptions',
+      method: 'GET',
+      relURL: 'users/${auth.getUserID()}/channels/${cid}/subscriptions',
+      fn: (json) => Subscription.fromJsonArray(json['subscriptions'] as List<dynamic>),
+      authToken: auth.getToken(),
+    );
+  }
+
   static Future<List<Client>> getClientList(TokenSource auth) async {
     return await _request(
       name: 'getClientList',

flutter/lib/components/bottom_fab/fab_with_icons.dart

@@ -1,81 +0,0 @@
-import 'package:flutter/material.dart';
-
-// https://stackoverflow.com/questions/46480221/flutter-floating-action-button-with-speed-dail
-
-class FabWithIcons extends StatefulWidget {
-  FabWithIcons({super.key, required this.icons, required this.onIconTapped});
-  final List<IconData> icons;
-  final ValueChanged<int> onIconTapped;
-
-  @override
-  State createState() => FabWithIconsState();
-}
-
-class FabWithIconsState extends State<FabWithIcons> with TickerProviderStateMixin {
-  late AnimationController _controller;
-
-  @override
-  void initState() {
-    super.initState();
-    _controller = AnimationController(
-      vsync: this,
-      duration: const Duration(milliseconds: 250),
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Column(
-      mainAxisAlignment: MainAxisAlignment.center,
-      mainAxisSize: MainAxisSize.min,
-      children: List.generate(widget.icons.length, (int index) {
-        return _buildChild(index);
-      }).toList()
-        ..add(
-          _buildFab(),
-        ),
-    );
-  }
-
-  Widget _buildChild(int index) {
-    Color backgroundColor = Theme.of(context).cardColor;
-    Color foregroundColor = Theme.of(context).secondaryHeaderColor;
-    return Container(
-      height: 70.0,
-      width: 56.0,
-      alignment: FractionalOffset.topCenter,
-      child: ScaleTransition(
-        scale: CurvedAnimation(
-          parent: _controller,
-          curve: Interval(0.0, 1.0 - index / widget.icons.length / 2.0, curve: Curves.easeOut),
-        ),
-        child: FloatingActionButton(
-          backgroundColor: backgroundColor,
-          mini: true,
-          child: Icon(widget.icons[index], color: foregroundColor),
-          onPressed: () => _onTapped(index),
-        ),
-      ),
-    );
-  }
-
-  Widget _buildFab() {
-    return FloatingActionButton(
-      onPressed: () {
-        if (_controller.isDismissed) {
-          _controller.forward();
-        } else {
-          _controller.reverse();
-        }
-      },
-      tooltip: 'Increment',
-      elevation: 2.0,
-      child: const Icon(Icons.add),
-    );
-  }
-
-  void _onTapped(int index) {
-    _controller.reverse();
-    widget.onIconTapped(index);
-  }
-}

flutter/lib/components/hidable_fab/hidable_fab.dart

@@ -3,17 +3,20 @@ import 'package:flutter/material.dart';
 class HidableFAB extends StatelessWidget {
   final VoidCallback? onPressed;
   final IconData icon;
+  final Object heroTag;
 
   const HidableFAB({
     super.key,
     this.onPressed,
     required this.icon,
+    required this.heroTag,
   });
 
   Widget build(BuildContext context) {
     return Visibility(
       visible: MediaQuery.viewInsetsOf(context).bottom == 0.0, // hide when keyboard is shown
       child: FloatingActionButton(
+        heroTag: this.heroTag,
         onPressed: onPressed,
         shape: const RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(17))),
         elevation: 2.0,

flutter/lib/components/layout/app_bar.dart

@@ -1,18 +1,20 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:provider/provider.dart';
+import 'package:simplecloudnotifier/components/layout/app_bar_filter_dialog.dart';
 import 'package:simplecloudnotifier/components/layout/app_bar_progress_indicator.dart';
 import 'package:simplecloudnotifier/pages/debug/debug_main.dart';
+import 'package:simplecloudnotifier/settings/app_settings.dart';
+import 'package:simplecloudnotifier/state/app_bar_state.dart';
+import 'package:simplecloudnotifier/state/app_events.dart';
 import 'package:simplecloudnotifier/state/app_theme.dart';
 import 'package:simplecloudnotifier/utils/navi.dart';
 
-class SCNAppBar extends StatelessWidget implements PreferredSizeWidget {
+class SCNAppBar extends StatefulWidget implements PreferredSizeWidget {
-  const SCNAppBar({
+  SCNAppBar({
     Key? key,
     required this.title,
     required this.showThemeSwitch,
-    required this.showDebug,
     required this.showSearch,
     required this.showShare,
     this.onShare = null,
@@ -20,16 +22,33 @@ class SCNAppBar extends StatelessWidget implements PreferredSizeWidget {
 
   final String? title;
   final bool showThemeSwitch;
-  final bool showDebug;
   final bool showSearch;
   final bool showShare;
   final void Function()? onShare;
 
+  @override
+  Size get preferredSize => const Size.fromHeight(kToolbarHeight);
+
+  @override
+  State<SCNAppBar> createState() => _SCNAppBarState();
+}
+
+class _SCNAppBarState extends State<SCNAppBar> {
+  final TextEditingController _ctrlSearchField = TextEditingController();
+
+  @override
+  void dispose() {
+    _ctrlSearchField.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
+    final cfg = Provider.of<AppSettings>(context);
+
     var actions = <Widget>[];
 
-    if (showDebug) {
+    if (cfg.showDebugButton) {
       actions.add(IconButton(
         icon: const Icon(FontAwesomeIcons.solidSpiderBlackWidow),
         tooltip: 'Debug',
@@ -39,7 +58,7 @@ class SCNAppBar extends StatelessWidget implements PreferredSizeWidget {
       ));
     }
 
-    if (showThemeSwitch) {
+    if (widget.showThemeSwitch) {
       actions.add(Consumer<AppTheme>(
         builder: (context, appTheme, child) => IconButton(
           icon: Icon(appTheme.darkMode ? FontAwesomeIcons.solidSun : FontAwesomeIcons.solidMoon),
@@ -48,54 +67,116 @@ class SCNAppBar extends StatelessWidget implements PreferredSizeWidget {
         ),
       ));
     } else {
-      actions.add(Visibility(
+      actions.add(_buildSpacer());
-        visible: false,
-        maintainSize: true,
-        maintainAnimation: true,
-        maintainState: true,
-        child: IconButton(
-          icon: const Icon(FontAwesomeIcons.square),
-          onPressed: () {/*TODO*/},
-        ),
-      ));
     }
 
-    if (showSearch) {
+    if (widget.showSearch) {
+      actions.add(IconButton(
+        icon: const Icon(FontAwesomeIcons.solidFilter),
+        tooltip: 'Filter',
+        onPressed: () => _showFilterDialog(context),
+      ));
       actions.add(IconButton(
         icon: const Icon(FontAwesomeIcons.solidMagnifyingGlass),
         tooltip: 'Search',
-        onPressed: () {/*TODO*/},
+        onPressed: () => AppBarState().setShowSearchField(true),
       ));
-    } else if (showShare) {
+    } else if (widget.showShare) {
+      actions.add(_buildSpacer());
       actions.add(IconButton(
         icon: const Icon(FontAwesomeIcons.solidShareNodes),
         tooltip: 'Share',
-        onPressed: onShare ?? () {},
+        onPressed: widget.onShare ?? () {},
       ));
     } else {
-      actions.add(Visibility(
+      actions.add(_buildSpacer());
-        visible: false,
+      actions.add(_buildSpacer());
-        maintainSize: true,
-        maintainAnimation: true,
-        maintainState: true,
-        child: IconButton(
-          icon: const Icon(FontAwesomeIcons.square),
-          onPressed: () {/*TODO*/},
-        ),
-      ));
     }
 
+    return Consumer<AppBarState>(builder: (context, value, child) {
+      if (value.showSearchField) {
         return AppBar(
-      title: Text(title ?? 'Simple Cloud Notifier 2.0'),
+          leading: IconButton(
+            icon: const Icon(FontAwesomeIcons.solidArrowLeft),
+            onPressed: () {
+              value.setShowSearchField(false);
+            },
+          ),
+          title: _buildSearchTextField(context),
+          actions: [
+            IconButton(
+              icon: const Icon(FontAwesomeIcons.solidMagnifyingGlass),
+              onPressed: () {
+                value.setShowSearchField(false);
+                AppEvents().notifySearchListeners(_ctrlSearchField.text);
+                _ctrlSearchField.clear();
+              },
+            ),
+          ],
+          backgroundColor: Theme.of(context).secondaryHeaderColor,
+          bottom: PreferredSize(
+            preferredSize: Size(double.infinity, 1.0),
+            child: AppBarProgressIndicator(show: value.loadingIndeterminate),
+          ),
+        );
+      } else {
+        return AppBar(
+          title: Text(widget.title ?? 'SCN'),
           actions: actions,
           backgroundColor: Theme.of(context).secondaryHeaderColor,
           bottom: PreferredSize(
             preferredSize: Size(double.infinity, 1.0),
-        child: AppBarProgressIndicator(),
+            child: AppBarProgressIndicator(show: value.loadingIndeterminate),
+          ),
+        );
+      }
+    });
+  }
+
+  Visibility _buildSpacer() {
+    return Visibility(
+      visible: false,
+      maintainSize: true,
+      maintainAnimation: true,
+      maintainState: true,
+      child: IconButton(
+        icon: const Icon(FontAwesomeIcons.square),
+        onPressed: () {/* NO-OP */},
       ),
     );
   }
 
-  @override
+  Widget _buildSearchTextField(BuildContext context) {
-  Size get preferredSize => const Size.fromHeight(kToolbarHeight);
+    return TextField(
+      controller: _ctrlSearchField,
+      autofocus: true,
+      style: TextStyle(fontSize: 20),
+      textInputAction: TextInputAction.search,
+      decoration: InputDecoration(
+        hintText: 'Search',
+      ),
+      onSubmitted: (value) {
+        AppBarState().setShowSearchField(false);
+        AppEvents().notifySearchListeners(_ctrlSearchField.text);
+        _ctrlSearchField.clear();
+      },
+    );
+  }
+
+  void _showFilterDialog(BuildContext context) {
+    showDialog<void>(
+      context: context,
+      barrierDismissible: true,
+      barrierColor: Colors.transparent,
+      builder: (BuildContext context) {
+        return Dialog(
+          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(0)),
+          alignment: Alignment.topCenter,
+          insetPadding: EdgeInsets.fromLTRB(0, this.widget.preferredSize.height, 0, 0),
+          backgroundColor: Colors.transparent,
+          child: AppBarFilterDialog(),
+        );
+      },
+    );
+  }
 }

flutter/lib/components/layout/app_bar_filter_dialog.dart

@@ -0,0 +1,86 @@
+import 'package:flutter/material.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+import 'package:simplecloudnotifier/utils/navi.dart';
+
+class AppBarFilterDialog extends StatefulWidget {
+  @override
+  _AppBarFilterDialogState createState() => _AppBarFilterDialogState();
+}
+
+class _AppBarFilterDialogState extends State<AppBarFilterDialog> {
+  double _height = 0;
+
+  double _targetHeight = 4 + (48 * 6) + (16 * 5) + 4;
+
+  @override
+  void initState() {
+    super.initState();
+    Future.delayed(Duration.zero, () {
+      setState(() {
+        _height = _targetHeight;
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    double vpWidth = MediaQuery.sizeOf(context).width;
+
+    return Container(
+      margin: const EdgeInsets.all(0),
+      width: vpWidth,
+      color: Colors.transparent,
+      child: Column(
+        children: [
+          Container(
+            color: Theme.of(context).secondaryHeaderColor,
+            child: AnimatedContainer(
+              duration: Duration(milliseconds: 350),
+              curve: Curves.easeInCubic,
+              height: _height,
+              child: ClipRect(
+                child: OverflowBox(
+                  alignment: Alignment.topCenter,
+                  maxWidth: vpWidth,
+                  minWidth: vpWidth,
+                  minHeight: 0,
+                  maxHeight: _targetHeight,
+                  child: Column(
+                    children: [
+                      SizedBox(height: 4),
+                      _buildFilterItem(context, FontAwesomeIcons.magnifyingGlass, 'Search'),
+                      Divider(),
+                      _buildFilterItem(context, FontAwesomeIcons.snake, 'Channel'),
+                      Divider(),
+                      _buildFilterItem(context, FontAwesomeIcons.signature, 'Sender'),
+                      Divider(),
+                      _buildFilterItem(context, FontAwesomeIcons.timer, 'Time'),
+                      Divider(),
+                      _buildFilterItem(context, FontAwesomeIcons.bolt, 'Priority'),
+                      Divider(),
+                      _buildFilterItem(context, FontAwesomeIcons.gearCode, 'Key'),
+                      SizedBox(height: 4),
+                    ],
+                  ),
+                ),
+              ),
+            ),
+          ),
+          Expanded(child: GestureDetector(child: Container(width: vpWidth, color: Color(0x88000000)), onTap: () => Navi.popDialog(context))),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildFilterItem(BuildContext context, IconData icon, String label) {
+    return ListTile(
+      visualDensity: VisualDensity.compact,
+      title: Text(label),
+      leading: Icon(icon),
+      onTap: () {
+        Navi.popDialog(context);
+        //TOOD show more...
+      },
+    );
+  }
+}

flutter/lib/components/layout/app_bar_progress_indicator.dart

@@ -1,21 +1,19 @@
 import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
-import 'package:simplecloudnotifier/state/app_bar_state.dart';
 
 class AppBarProgressIndicator extends StatelessWidget implements PreferredSizeWidget {
+  AppBarProgressIndicator({required this.show});
+
+  final bool show;
+
   @override
   Size get preferredSize => Size(double.infinity, 1.0);
 
   @override
   Widget build(BuildContext context) {
-    return Consumer<AppBarState>(
+    if (show) {
-      builder: (context, value, child) {
-        if (value.loadingIndeterminate) {
       return LinearProgressIndicator(value: null);
     } else {
       return SizedBox.square(dimension: 4); // 4 height is the same as the LinearProgressIndicator
     }
-      },
-    );
   }
 }

flutter/lib/components/layout/scaffold.dart

@@ -7,7 +7,6 @@ class SCNScaffold extends StatelessWidget {
     required this.child,
     this.title,
     this.showThemeSwitch = true,
-    this.showDebug = true,
     this.showSearch = true,
     this.showShare = false,
     this.onShare = null,
@@ -16,7 +15,6 @@ class SCNScaffold extends StatelessWidget {
   final Widget child;
   final String? title;
   final bool showThemeSwitch;
-  final bool showDebug;
   final bool showSearch;
   final bool showShare;
   final void Function()? onShare;
@@ -27,7 +25,6 @@ class SCNScaffold extends StatelessWidget {
       appBar: SCNAppBar(
         title: title,
         showThemeSwitch: showThemeSwitch,
-        showDebug: showDebug,
         showSearch: showSearch,
         showShare: showShare,
         onShare: onShare ?? () {},

flutter/lib/main.dart

@@ -2,14 +2,20 @@ import 'dart:io';
 
 import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:provider/provider.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
 import 'package:simplecloudnotifier/models/client.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
 import 'package:simplecloudnotifier/nav_layout.dart';
+import 'package:simplecloudnotifier/pages/channel_view/channel_view.dart';
+import 'package:simplecloudnotifier/pages/message_view/message_view.dart';
+import 'package:simplecloudnotifier/settings/app_settings.dart';
 import 'package:simplecloudnotifier/state/app_bar_state.dart';
+import 'package:simplecloudnotifier/state/app_events.dart';
 import 'package:simplecloudnotifier/state/app_theme.dart';
 import 'package:simplecloudnotifier/state/application_log.dart';
 import 'package:simplecloudnotifier/state/fb_message.dart';
@@ -17,7 +23,9 @@ import 'package:simplecloudnotifier/state/globals.dart';
 import 'package:simplecloudnotifier/state/request_log.dart';
 import 'package:simplecloudnotifier/state/app_auth.dart';
 import 'package:firebase_core/firebase_core.dart';
+import 'package:simplecloudnotifier/state/scn_data_cache.dart';
 import 'package:simplecloudnotifier/utils/navi.dart';
+import 'package:simplecloudnotifier/utils/notifier.dart';
 import 'package:toastification/toastification.dart';
 import 'firebase_options.dart';
 
@@ -39,20 +47,10 @@ void main() async {
   Hive.registerAdapter(SCNRequestAdapter());
   Hive.registerAdapter(SCNLogAdapter());
   Hive.registerAdapter(SCNLogLevelAdapter());
-  Hive.registerAdapter(MessageAdapter());
+  Hive.registerAdapter(SCNMessageAdapter());
   Hive.registerAdapter(ChannelAdapter());
   Hive.registerAdapter(FBMessageAdapter());
 
-  print('[INIT] Load Hive<scn-requests>...');
-
-  try {
-    await Hive.openBox<SCNRequest>('scn-requests');
-  } catch (exc, trace) {
-    Hive.deleteBoxFromDisk('scn-requests');
-    await Hive.openBox<SCNRequest>('scn-requests');
-    ApplicationLog.error('Failed to open Hive-Box: scn-requests: ' + exc.toString(), trace: trace);
-  }
-
   print('[INIT] Load Hive<scn-logs>...');
 
   try {
@@ -63,13 +61,23 @@ void main() async {
     ApplicationLog.error('Failed to open Hive-Box: scn-logs: ' + exc.toString(), trace: trace);
   }
 
+  print('[INIT] Load Hive<scn-requests>...');
+
+  try {
+    await Hive.openBox<SCNRequest>('scn-requests');
+  } catch (exc, trace) {
+    Hive.deleteBoxFromDisk('scn-requests');
+    await Hive.openBox<SCNRequest>('scn-requests');
+    ApplicationLog.error('Failed to open Hive-Box: scn-requests: ' + exc.toString(), trace: trace);
+  }
+
   print('[INIT] Load Hive<scn-message-cache>...');
 
   try {
-    await Hive.openBox<Message>('scn-message-cache');
+    await Hive.openBox<SCNMessage>('scn-message-cache');
   } catch (exc, trace) {
     Hive.deleteBoxFromDisk('scn-message-cache');
-    await Hive.openBox<Message>('scn-message-cache');
+    await Hive.openBox<SCNMessage>('scn-message-cache');
     ApplicationLog.error('Failed to open Hive-Box: scn-message-cache' + exc.toString(), trace: trace);
   }
 
@@ -98,20 +106,19 @@ void main() async {
   final appAuth = AppAuth(); // ensure UserAccount is loaded
 
   if (appAuth.isAuth()) {
+    // load user+client in background
+    () async {
       try {
-      print('[INIT] Load User...');
         await appAuth.loadUser();
-      //TODO fallback to cached user (perhaps event use cached client (if exists) directly and only update/load in background)
       } catch (exc, trace) {
-      ApplicationLog.error('Failed to load user (on startup): ' + exc.toString(), trace: trace);
+        ApplicationLog.error('Failed to load user (background load on startup): ' + exc.toString(), trace: trace);
       }
       try {
-      print('[INIT] Load Client...');
         await appAuth.loadClient();
-      //TODO fallback to cached client (perhaps event use cached client (if exists) directly and only update/load in background)
       } catch (exc, trace) {
-      ApplicationLog.error('Failed to load user (on startup): ' + exc.toString(), trace: trace);
+        ApplicationLog.error('Failed to load user (background load on startup): ' + exc.toString(), trace: trace);
       }
+    }();
   }
 
   if (!Platform.isLinux) {
@@ -147,6 +154,46 @@ void main() async {
     print('[INIT] Skip Firebase init (Platform == Linux)...');
   }
 
+  print('[INIT] Load Notifications...');
+
+  final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
+  final flutterLocalNotificationsPluginImpl = flutterLocalNotificationsPlugin.resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>();
+  if (flutterLocalNotificationsPluginImpl == null) {
+    ApplicationLog.error('Failed to get AndroidFlutterLocalNotificationsPlugin', trace: StackTrace.current);
+  } else {
+    flutterLocalNotificationsPluginImpl.requestNotificationsPermission();
+
+    final initializationSettingsAndroid = AndroidInitializationSettings('ic_notification_white');
+    final initializationSettingsDarwin = DarwinInitializationSettings(
+      requestAlertPermission: true,
+      requestBadgePermission: true,
+      requestSoundPermission: true,
+      onDidReceiveLocalNotification: _receiveLocalDarwinNotification,
+      notificationCategories: getDarwinNotificationCategories(),
+    );
+    final initializationSettingsLinux = LinuxInitializationSettings(defaultActionName: 'Open notification');
+    final initializationSettings = InitializationSettings(
+      android: initializationSettingsAndroid,
+      iOS: initializationSettingsDarwin,
+      linux: initializationSettingsLinux,
+    );
+    flutterLocalNotificationsPlugin.initialize(
+      initializationSettings,
+      onDidReceiveNotificationResponse: _receiveLocalNotification,
+      onDidReceiveBackgroundNotificationResponse: _notificationTapBackground,
+    );
+
+    final appLaunchNotification = await flutterLocalNotificationsPlugin.getNotificationAppLaunchDetails();
+    if (appLaunchNotification != null) {
+      // Use has launched SCN by clicking on a loca notifiaction, if it was a summary or message notifiaction open the corresponding screen
+      // This is android only
+      //TODO same on iOS, somehow??
+      ApplicationLog.info('App launched by notification: ${appLaunchNotification.notificationResponse?.id}');
+
+      _handleNotificationClickAction(appLaunchNotification.notificationResponse?.payload, Duration(milliseconds: 600));
+    }
+  }
+
   ApplicationLog.debug('[INIT] Application started');
 
   runApp(
@@ -155,6 +202,7 @@ void main() async {
         ChangeNotifierProvider(create: (context) => AppAuth(), lazy: false),
         ChangeNotifierProvider(create: (context) => AppTheme(), lazy: false),
         ChangeNotifierProvider(create: (context) => AppBarState(), lazy: false),
+        ChangeNotifierProvider(create: (context) => AppSettings(), lazy: false),
       ],
       child: SCNApp(),
     ),
@@ -164,6 +212,8 @@ void main() async {
 class SCNApp extends StatelessWidget {
   SCNApp({super.key});
 
+  static var materialKey = GlobalKey<NavigatorState>();
+
   @override
   Widget build(BuildContext context) {
     return ToastificationWrapper(
@@ -174,6 +224,7 @@ class SCNApp extends StatelessWidget {
       ),
       child: Consumer<AppTheme>(
         builder: (context, appTheme, child) => MaterialApp(
+          navigatorKey: SCNApp.materialKey,
           title: 'SimpleCloudNotifier',
           navigatorObservers: [Navi.routeObserver, Navi.modalRouteObserver],
           theme: ThemeData(
@@ -188,6 +239,12 @@ class SCNApp extends StatelessWidget {
   }
 }
 
+@pragma('vm:entry-point')
+void _notificationTapBackground(NotificationResponse notificationResponse) {
+  // I think only iOS triggers this, TODO
+  ApplicationLog.info('Received local notification<vm:entry-point>: ${notificationResponse.id}');
+}
+
 void setFirebaseToken(String fcmToken) async {
   final acc = AppAuth();
 
@@ -224,18 +281,129 @@ void setFirebaseToken(String fcmToken) async {
   }
 }
 
+@pragma('vm:entry-point')
 Future<void> _onBackgroundMessage(RemoteMessage message) async {
+  // a firebase message was received while the app was in the background or terminated
   await _receiveMessage(message, false);
 }
 
+@pragma('vm:entry-point')
 void _onForegroundMessage(RemoteMessage message) {
+  // a firebase message was received while the app was in the foreground
   _receiveMessage(message, true);
 }
 
 Future<void> _receiveMessage(RemoteMessage message, bool foreground) async {
-  // ensure init
+  try {
-  Hive.openBox<SCNLog>('scn-logs');
+    // ensure globals init
+    if (!Globals().isInitialized) {
+      print('[LATE-INIT] Init Globals() - to ensure working _receiveMessage($foreground)...');
+      await Globals().init();
+    }
+
+    // ensure hive init
+    if (!Hive.isBoxOpen('scn-logs')) {
+      print('[LATE-INIT] Init Hive - to ensure working _receiveMessage($foreground)...');
+
+      await Hive.initFlutter();
+      Hive.registerAdapter(SCNRequestAdapter());
+      Hive.registerAdapter(SCNLogAdapter());
+      Hive.registerAdapter(SCNLogLevelAdapter());
+      Hive.registerAdapter(SCNMessageAdapter());
+      Hive.registerAdapter(ChannelAdapter());
+      Hive.registerAdapter(FBMessageAdapter());
+    }
+
+    print('[LATE-INIT] Ensure hive boxes are open for _receiveMessage($foreground)...');
+
+    await Hive.openBox<SCNLog>('scn-logs');
+    await Hive.openBox<FBMessage>('scn-fb-messages');
+    await Hive.openBox<SCNMessage>('scn-message-cache');
+    await Hive.openBox<SCNRequest>('scn-requests');
+  } catch (exc, trace) {
+    ApplicationLog.error('Failed to init hive:' + exc.toString(), trace: trace);
+    Notifier.showLocalNotification("", "@ERROR", "@ERROR", 'Error Channel', "Error", "Failed to receive SCN message (init failed)", null);
+    return;
+  }
 
   ApplicationLog.info('Received FB message (${foreground ? 'foreground' : 'background'}): ${message.messageId ?? 'NULL'}');
+
+  String scn_msg_id;
+
+  try {
+    scn_msg_id = message.data['scn_msg_id'] as String;
+
+    final timestamp = DateTime.fromMillisecondsSinceEpoch(int.parse(message.data['timestamp'] as String) * 1000);
+    final title = message.data['title'] as String;
+    final channel = message.data['channel'] as String;
+    final channel_id = message.data['channel_id'] as String;
+    final body = message.data['body'] as String;
+
+    Notifier.showLocalNotification(scn_msg_id, channel_id, channel, 'Channel: ${channel}', title, body, timestamp);
+  } catch (exc, trace) {
+    ApplicationLog.error('Failed to decode received FB message' + exc.toString(), trace: trace);
+    Notifier.showLocalNotification("", "@ERROR", "@ERROR", 'Error Channel', "Error", "Failed to receive SCN message (decode failed)", null);
+    return;
+  }
+
+  try {
     FBMessageLog.insert(message);
+  } catch (exc, trace) {
+    ApplicationLog.error('Failed to persist received FB message' + exc.toString(), trace: trace);
+    Notifier.showLocalNotification("", "@ERROR", "@ERROR", 'Error Channel', "Error", "Failed to receive SCN message (persist failed)", null);
+    return;
+  }
+
+  try {
+    final msg = await APIClient.getMessage(AppAuth(), scn_msg_id);
+    SCNDataCache().addToMessageCache([msg]);
+    if (foreground) AppEvents().notifyMessageReceivedListeners(msg);
+  } catch (exc, trace) {
+    ApplicationLog.error('Failed to query+persist message' + exc.toString(), trace: trace);
+    return;
+  }
+}
+
+void _receiveLocalDarwinNotification(int id, String? title, String? body, String? payload) {
+  //TODO iOS?
+  ApplicationLog.info('Received local notification<darwin>: $id -> [$title]');
+}
+
+void _receiveLocalNotification(NotificationResponse details) {
+  // User has tapped a flutter_local notification, while the app was running
+  ApplicationLog.info('Tapped local notification: [[${details.id} | ${details.actionId} | ${details.input} | ${details.notificationResponseType} | ${details.payload}]]');
+
+  _handleNotificationClickAction(details.payload, Duration.zero);
+}
+
+void _handleNotificationClickAction(String? payload, Duration delay) {
+  final parts = payload?.split('\n') ?? [];
+
+  if (parts.length == 4 && parts[0] == '@SCN_MESSAGE') {
+    final messageID = parts[1];
+    () async {
+      await Future.delayed(delay);
+
+      SchedulerBinding.instance.addPostFrameCallback((_) {
+        ApplicationLog.info('Handle notification action @SCN_MESSAGE --> ${messageID}');
+        Navi.push(SCNApp.materialKey.currentContext!, () => MessageViewPage(messageID: messageID, preloadedData: null));
+      });
+    }();
+  } else if (parts.length == 3 && parts[0] == '@SCN_MESSAGE_SUMMARY') {
+    final channelID = parts[1];
+    () async {
+      await Future.delayed(delay);
+
+      SchedulerBinding.instance.addPostFrameCallback((_) {
+        ApplicationLog.info('Handle notification action @SCN_MESSAGE_SUMMARY --> ${channelID}');
+        Navi.push(SCNApp.materialKey.currentContext!, () => ChannelViewPage(channelID: channelID, preloadedData: null, needsReload: null));
+      });
+    }();
+  }
+}
+
+List<DarwinNotificationCategory> getDarwinNotificationCategories() {
+  return <DarwinNotificationCategory>[
+    //TODO ?!?
+  ];
 }

flutter/lib/models/channel.dart

@@ -70,11 +70,21 @@ class Channel extends HiveObject implements FieldDebuggable {
       ('messagesSent', '${this.messagesSent}'),
     ];
   }
+
+  ChannelPreview toPreview() {
+    return ChannelPreview(
+      channelID: this.channelID,
+      ownerUserID: this.ownerUserID,
+      internalName: this.internalName,
+      displayName: this.displayName,
+      descriptionName: this.descriptionName,
+    );
+  }
 }
 
 class ChannelWithSubscription {
   final Channel channel;
-  final Subscription subscription;
+  final Subscription? subscription;
 
   ChannelWithSubscription({
     required this.channel,
@@ -84,7 +94,7 @@ class ChannelWithSubscription {
   factory ChannelWithSubscription.fromJson(Map<String, dynamic> json) {
     return ChannelWithSubscription(
       channel: Channel.fromJson(json),
-      subscription: Subscription.fromJson(json['subscription'] as Map<String, dynamic>),
+      subscription: json['subscription'] == null ? null : Subscription.fromJson(json['subscription'] as Map<String, dynamic>),
     );
   }
 

flutter/lib/models/client.dart

@@ -32,6 +32,19 @@ class Client {
     );
   }
 
+  Map<String, dynamic> toJson() {
+    return {
+      'client_id': clientID,
+      'user_id': userID,
+      'type': type,
+      'fcm_token': fcmToken,
+      'timestamp_created': timestampCreated,
+      'agent_model': agentModel,
+      'agent_version': agentVersion,
+      'name': name,
+    };
+  }
+
   static List<Client> fromJsonArray(List<dynamic> jsonArr) {
     return jsonArr.map<Client>((e) => Client.fromJson(e as Map<String, dynamic>)).toList();
   }

flutter/lib/models/scn_message.dart

@@ -1,10 +1,10 @@
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:simplecloudnotifier/state/interfaces.dart';
 
-part 'message.g.dart';
+part 'scn_message.g.dart';
 
 @HiveType(typeId: 105)
-class Message extends HiveObject implements FieldDebuggable {
+class SCNMessage extends HiveObject implements FieldDebuggable {
   @HiveField(0)
   final String messageID;
 
@@ -33,7 +33,7 @@ class Message extends HiveObject implements FieldDebuggable {
   @HiveField(21)
   final bool trimmed;
 
-  Message({
+  SCNMessage({
     required this.messageID,
     required this.senderUserID,
     required this.channelInternalName,
@@ -49,8 +49,8 @@ class Message extends HiveObject implements FieldDebuggable {
     required this.trimmed,
   });
 
-  factory Message.fromJson(Map<String, dynamic> json) {
+  factory SCNMessage.fromJson(Map<String, dynamic> json) {
-    return Message(
+    return SCNMessage(
       messageID: json['message_id'] as String,
       senderUserID: json['sender_user_id'] as String,
       channelInternalName: json['channel_internal_name'] as String,
@@ -67,10 +67,10 @@ class Message extends HiveObject implements FieldDebuggable {
     );
   }
 
-  static (String, List<Message>) fromPaginatedJsonArray(Map<String, dynamic> data, String keyMessages, String keyToken) {
+  static (String, List<SCNMessage>) fromPaginatedJsonArray(Map<String, dynamic> data, String keyMessages, String keyToken) {
     final npt = data[keyToken] as String;
 
-    final messages = (data[keyMessages] as List<dynamic>).map<Message>((e) => Message.fromJson(e as Map<String, dynamic>)).toList();
+    final messages = (data[keyMessages] as List<dynamic>).map<SCNMessage>((e) => SCNMessage.fromJson(e as Map<String, dynamic>)).toList();
 
     return (npt, messages);
   }

flutter/lib/models/scn_message.g.dart

@@ -1,22 +1,22 @@
 // GENERATED CODE - DO NOT MODIFY BY HAND
 
-part of 'message.dart';
+part of 'scn_message.dart';
 
 // **************************************************************************
 // TypeAdapterGenerator
 // **************************************************************************
 
-class MessageAdapter extends TypeAdapter<Message> {
+class SCNMessageAdapter extends TypeAdapter<SCNMessage> {
   @override
   final int typeId = 105;
 
   @override
-  Message read(BinaryReader reader) {
+  SCNMessage read(BinaryReader reader) {
     final numOfFields = reader.readByte();
     final fields = <int, dynamic>{
       for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
     };
-    return Message(
+    return SCNMessage(
       messageID: fields[0] as String,
       senderUserID: fields[10] as String,
       channelInternalName: fields[11] as String,
@@ -34,7 +34,7 @@ class MessageAdapter extends TypeAdapter<Message> {
   }
 
   @override
-  void write(BinaryWriter writer, Message obj) {
+  void write(BinaryWriter writer, SCNMessage obj) {
     writer
       ..writeByte(13)
       ..writeByte(0)
@@ -71,7 +71,7 @@ class MessageAdapter extends TypeAdapter<Message> {
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
-      other is MessageAdapter &&
+      other is SCNMessageAdapter &&
           runtimeType == other.runtimeType &&
           typeId == other.typeId;
 }

flutter/lib/models/user.dart

@@ -63,6 +63,33 @@ class User {
       maxUserMessageIDLength: json['max_user_message_id_length'] as int,
     );
   }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'user_id': userID,
+      'username': username,
+      'timestamp_created': timestampCreated,
+      'timestamp_lastread': timestampLastRead,
+      'timestamp_lastsent': timestampLastSent,
+      'messages_sent': messagesSent,
+      'quota_used': quotaUsed,
+      'quota_remaining': quotaRemaining,
+      'quota_max': quotaPerDay,
+      'is_pro': isPro,
+      'default_channel': defaultChannel,
+      'max_body_size': maxBodySize,
+      'max_title_length': maxTitleLength,
+      'default_priority': defaultPriority,
+      'max_channel_name_length': maxChannelNameLength,
+      'max_channel_description_length': maxChannelDescriptionLength,
+      'max_sender_name_length': maxSenderNameLength,
+      'max_user_message_id_length': maxUserMessageIDLength,
+    };
+  }
+
+  UserPreview toPreview() {
+    return UserPreview(userID: userID, username: username);
+  }
 }
 
 class UserWithClientsAndKeys {

flutter/lib/nav_layout.dart

@@ -59,8 +59,7 @@ class _SCNNavLayoutState extends State<SCNNavLayout> {
     return Scaffold(
       appBar: SCNAppBar(
         title: null,
-        showDebug: true,
+        showSearch: _selectedIndex == 0,
-        showSearch: _selectedIndex == 0 || _selectedIndex == 1,
         showShare: false,
         showThemeSwitch: true,
       ),
@@ -77,6 +76,7 @@ class _SCNNavLayoutState extends State<SCNNavLayout> {
       bottomNavigationBar: _buildNavBar(context),
       floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
       floatingActionButton: HidableFAB(
+        heroTag: 'fab_main',
         onPressed: _onFABTapped,
         icon: FontAwesomeIcons.solidPaperPlaneTop,
       ),

flutter/lib/pages/channel_list/channel_list.dart

@@ -1,12 +1,15 @@
 import 'package:flutter/material.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 import 'package:provider/provider.dart';
 import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
+import 'package:simplecloudnotifier/pages/channel_view/channel_view.dart';
 import 'package:simplecloudnotifier/state/app_bar_state.dart';
 import 'package:simplecloudnotifier/state/application_log.dart';
 import 'package:simplecloudnotifier/state/app_auth.dart';
 import 'package:simplecloudnotifier/pages/channel_list/channel_list_item.dart';
+import 'package:simplecloudnotifier/utils/navi.dart';
 
 class ChannelRootPage extends StatefulWidget {
   const ChannelRootPage({super.key, required this.isVisiblePage});
@@ -17,11 +20,13 @@ class ChannelRootPage extends StatefulWidget {
   State<ChannelRootPage> createState() => _ChannelRootPageState();
 }
 
-class _ChannelRootPageState extends State<ChannelRootPage> {
+class _ChannelRootPageState extends State<ChannelRootPage> with RouteAware {
-  final PagingController<int, Channel> _pagingController = PagingController.fromValue(PagingState(nextPageKey: null, itemList: [], error: null), firstPageKey: 0);
+  final PagingController<int, ChannelWithSubscription> _pagingController = PagingController.fromValue(PagingState(nextPageKey: null, itemList: [], error: null), firstPageKey: 0);
 
   bool _isInitialized = false;
 
+  bool _reloadEnqueued = false;
+
   @override
   void initState() {
     super.initState();
@@ -31,10 +36,17 @@ class _ChannelRootPageState extends State<ChannelRootPage> {
     if (widget.isVisiblePage && !_isInitialized) _realInitState();
   }
 
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    Navi.modalRouteObserver.subscribe(this, ModalRoute.of(context)!);
+  }
+
   @override
   void dispose() {
     ApplicationLog.debug('ChannelRootPage::dispose');
     _pagingController.dispose();
+    Navi.modalRouteObserver.unsubscribe(this);
     super.dispose();
   }
 
@@ -51,6 +63,24 @@ class _ChannelRootPageState extends State<ChannelRootPage> {
     }
   }
 
+  @override
+  void didPush() {
+    // ...
+  }
+
+  @override
+  void didPopNext() {
+    if (_reloadEnqueued) {
+      ApplicationLog.debug('[ChannelList::RouteObserver] --> didPopNext (will background-refresh) (_reloadEnqueued == true)');
+      () async {
+        _reloadEnqueued = false;
+        AppBarState().setLoadingIndeterminate(true);
+        await Future.delayed(const Duration(milliseconds: 500)); // prevents flutter bug where the whole process crashes ?!?
+        await _backgroundRefresh();
+      }();
+    }
+  }
+
   void _realInitState() {
     ApplicationLog.debug('ChannelRootPage::_realInitState');
     _pagingController.refresh();
@@ -68,9 +98,9 @@ class _ChannelRootPageState extends State<ChannelRootPage> {
     }
 
     try {
-      final items = (await APIClient.getChannelList(acc, ChannelSelector.all)).map((p) => p.channel).toList();
+      final items = (await APIClient.getChannelList(acc, ChannelSelector.all)).toList();
 
-      items.sort((a, b) => -1 * (a.timestampLastSent ?? '').compareTo(b.timestampLastSent ?? ''));
+      items.sort((a, b) => -1 * (a.channel.timestampLastSent ?? '').compareTo(b.channel.timestampLastSent ?? ''));
 
       _pagingController.value = PagingState(nextPageKey: null, itemList: items, error: null);
     } catch (exc, trace) {
@@ -94,13 +124,17 @@ class _ChannelRootPageState extends State<ChannelRootPage> {
 
       AppBarState().setLoadingIndeterminate(true);
 
-      final items = (await APIClient.getChannelList(acc, ChannelSelector.all)).map((p) => p.channel).toList();
+      final items = (await APIClient.getChannelList(acc, ChannelSelector.all)).toList();
 
-      items.sort((a, b) => -1 * (a.timestampLastSent ?? '').compareTo(b.timestampLastSent ?? ''));
+      items.sort((a, b) => -1 * (a.channel.timestampLastSent ?? '').compareTo(b.channel.timestampLastSent ?? ''));
 
+      setState(() {
         _pagingController.value = PagingState(nextPageKey: null, itemList: items, error: null);
+      });
     } catch (exc, trace) {
+      setState(() {
         _pagingController.error = exc.toString();
+      });
       ApplicationLog.error('Failed to list channels: ' + exc.toString(), trace: trace);
     } finally {
       AppBarState().setLoadingIndeterminate(false);
@@ -109,19 +143,35 @@ class _ChannelRootPageState extends State<ChannelRootPage> {
 
   @override
   Widget build(BuildContext context) {
-    return RefreshIndicator(
+    return Scaffold(
+      body: RefreshIndicator(
         onRefresh: () => Future.sync(
           () => _pagingController.refresh(),
         ),
-      child: PagedListView<int, Channel>(
+        child: PagedListView<int, ChannelWithSubscription>(
           pagingController: _pagingController,
-        builderDelegate: PagedChildBuilderDelegate<Channel>(
+          builderDelegate: PagedChildBuilderDelegate<ChannelWithSubscription>(
             itemBuilder: (context, item, index) => ChannelListItem(
-            channel: item,
+              channel: item.channel,
-            onPressed: () {/*TODO*/},
+              subscription: item.subscription,
+              onPressed: () {
+                Navi.push(context, () => ChannelViewPage(channelID: item.channel.channelID, preloadedData: (item.channel, item.subscription), needsReload: _enqueueReload));
+              },
             ),
           ),
         ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        heroTag: 'fab_channel_list_qr',
+        onPressed: () {
+          //TODO scan qr code to subscribe channel
+        },
+        child: const Icon(FontAwesomeIcons.qrcode),
+      ),
     );
   }
+
+  void _enqueueReload() {
+    _reloadEnqueued = true;
+  }
 }

flutter/lib/pages/channel_list/channel_list_item.dart

@@ -1,10 +1,18 @@
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:intl/intl.dart';
 import 'package:provider/provider.dart';
 import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
+import 'package:simplecloudnotifier/models/subscription.dart';
+import 'package:simplecloudnotifier/pages/channel_message_view/channel_message_view.dart';
 import 'package:simplecloudnotifier/state/app_auth.dart';
+import 'package:simplecloudnotifier/state/scn_data_cache.dart';
+import 'package:simplecloudnotifier/utils/navi.dart';
+import 'package:simplecloudnotifier/utils/toaster.dart';
 
 class ChannelListItem extends StatefulWidget {
   static final _dateFormat = DateFormat('yyyy-MM-dd kk:mm');
@@ -12,10 +20,12 @@ class ChannelListItem extends StatefulWidget {
   const ChannelListItem({
     required this.channel,
     required this.onPressed,
+    required this.subscription,
     super.key,
   });
 
   final Channel channel;
+  final Subscription? subscription;
   final Null Function() onPressed;
 
   @override
@@ -23,7 +33,7 @@ class ChannelListItem extends StatefulWidget {
 }
 
 class _ChannelListItemState extends State<ChannelListItem> {
-  Message? lastMessage;
+  SCNMessage? lastMessage;
 
   @override
   void initState() {
@@ -32,6 +42,8 @@ class _ChannelListItemState extends State<ChannelListItem> {
     final acc = Provider.of<AppAuth>(context, listen: false);
 
     if (acc.isAuth()) {
+      lastMessage = SCNDataCache().getMessagesSorted().where((p) => p.channelID == widget.channel.channelID).firstOrNull;
+
       () async {
         final (_, channelMessages) = await APIClient.getMessageList(acc, '@start', pageSize: 1, channelIDs: [widget.channel.channelID]);
         setState(() {
@@ -49,10 +61,14 @@ class _ChannelListItemState extends State<ChannelListItem> {
       shape: BeveledRectangleBorder(borderRadius: BorderRadius.circular(0)),
       color: Theme.of(context).cardTheme.color,
       child: InkWell(
-        splashColor: Theme.of(context).splashColor,
         onTap: widget.onPressed,
         child: Padding(
           padding: const EdgeInsets.all(8),
+          child: Row(
+            children: [
+              _buildIcon(context),
+              SizedBox(width: 8),
+              Expanded(
                 child: Column(
                   crossAxisAlignment: CrossAxisAlignment.stretch,
                   children: [
@@ -76,7 +92,7 @@ class _ChannelListItemState extends State<ChannelListItem> {
                       children: [
                         Expanded(
                           child: Text(
-                      lastMessage?.title ?? '...',
+                            _preformatTitle(lastMessage),
                             style: TextStyle(color: Theme.of(context).textTheme.bodyLarge?.color?.withAlpha(160)),
                           ),
                         ),
@@ -86,7 +102,37 @@ class _ChannelListItemState extends State<ChannelListItem> {
                   ],
                 ),
               ),
+              SizedBox(width: 4),
+              GestureDetector(
+                onTap: () {
+                  Navi.push(context, () => ChannelMessageViewPage(channel: this.widget.channel));
+                },
+                child: Padding(
+                  padding: const EdgeInsets.all(8),
+                  child: Icon(FontAwesomeIcons.solidEnvelopes, color: Theme.of(context).colorScheme.onPrimaryContainer.withAlpha(128), size: 24),
+                ),
+              ),
+            ],
+          ),
+        ),
       ),
     );
   }
+
+  String _preformatTitle(SCNMessage? message) {
+    if (message == null) return '...';
+    return message.title.replaceAll('\n', '').replaceAll('\r', '').replaceAll('\t', ' ');
+  }
+
+  Widget _buildIcon(BuildContext context) {
+    if (widget.subscription == null) {
+      return Icon(FontAwesomeIcons.solidSquareDashed, color: Theme.of(context).colorScheme.outline, size: 32); // not-subscribed
+    } else if (widget.subscription!.confirmed && widget.channel.ownerUserID == widget.subscription!.subscriberUserID) {
+      return Icon(FontAwesomeIcons.solidSquareRss, color: Theme.of(context).colorScheme.onPrimaryContainer, size: 32); // subscribed (own channel)
+    } else if (widget.subscription!.confirmed) {
+      return Icon(FontAwesomeIcons.solidSquareShareNodes, color: Theme.of(context).colorScheme.onPrimaryContainer, size: 32); // subscribed (foreign channel)
+    } else {
+      return Icon(FontAwesomeIcons.solidSquareEnvelope, color: Theme.of(context).colorScheme.tertiary, size: 32); // requested
+    }
+  }
 }

flutter/lib/pages/channel_message_view/channel_message_view.dart

@@ -0,0 +1,105 @@
+import 'package:flutter/material.dart';
+import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
+import 'package:simplecloudnotifier/api/api_client.dart';
+import 'package:simplecloudnotifier/components/layout/scaffold.dart';
+import 'package:simplecloudnotifier/models/channel.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
+import 'package:simplecloudnotifier/pages/message_list/message_list_item.dart';
+import 'package:simplecloudnotifier/pages/message_view/message_view.dart';
+import 'package:simplecloudnotifier/settings/app_settings.dart';
+import 'package:simplecloudnotifier/state/app_auth.dart';
+import 'package:simplecloudnotifier/state/application_log.dart';
+import 'package:simplecloudnotifier/state/scn_data_cache.dart';
+import 'package:simplecloudnotifier/utils/navi.dart';
+import 'package:provider/provider.dart';
+
+class ChannelMessageViewPage extends StatefulWidget {
+  const ChannelMessageViewPage({
+    required this.channel,
+    super.key,
+  });
+
+  final Channel channel;
+
+  @override
+  State<ChannelMessageViewPage> createState() => _ChannelMessageViewPageState();
+}
+
+class _ChannelMessageViewPageState extends State<ChannelMessageViewPage> {
+  PagingController<String, SCNMessage> _pagingController = PagingController.fromValue(PagingState(nextPageKey: null, itemList: [], error: null), firstPageKey: '@start');
+
+  @override
+  void initState() {
+    super.initState();
+
+    _pagingController.addPageRequestListener(_fetchPage);
+
+    _pagingController.refresh();
+  }
+
+  @override
+  void dispose() {
+    _pagingController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _fetchPage(String thisPageToken) async {
+    final acc = Provider.of<AppAuth>(context, listen: false);
+    final cfg = Provider.of<AppSettings>(context, listen: false);
+
+    ApplicationLog.debug('Start ChannelMessageViewPage::_pagingController::_fetchPage [ ${thisPageToken} ]');
+
+    if (!acc.isAuth()) {
+      _pagingController.error = 'Not logged in';
+      return;
+    }
+
+    try {
+      final (npt, newItems) = await APIClient.getMessageList(acc, thisPageToken, pageSize: cfg.messagePageSize, channelIDs: [this.widget.channel.channelID]);
+
+      SCNDataCache().addToMessageCache(newItems); // no await
+
+      if (npt == '@end') {
+        _pagingController.appendLastPage(newItems);
+      } else {
+        _pagingController.appendPage(newItems, npt);
+      }
+    } catch (exc, trace) {
+      _pagingController.error = exc.toString();
+      ApplicationLog.error('Failed to list channel-messages: ' + exc.toString(), trace: trace);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SCNScaffold(
+      title: this.widget.channel.displayName,
+      showSearch: false,
+      showShare: false,
+      child: _buildMessageList(context),
+    );
+  }
+
+  Widget _buildMessageList(BuildContext context) {
+    return Padding(
+      padding: EdgeInsets.fromLTRB(8, 4, 8, 4),
+      child: RefreshIndicator(
+        onRefresh: () => Future.sync(
+          () => _pagingController.refresh(),
+        ),
+        child: PagedListView<String, SCNMessage>(
+          pagingController: _pagingController,
+          builderDelegate: PagedChildBuilderDelegate<SCNMessage>(
+            itemBuilder: (context, item, index) => MessageListItem(
+              message: item,
+              allChannels: {this.widget.channel.channelID: this.widget.channel},
+              onPressed: () {
+                Navi.push(context, () => MessageViewPage(messageID: item.messageID, preloadedData: (item,)));
+              },
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

flutter/lib/pages/channel_view/channel_view.dart

@@ -0,0 +1,611 @@
+import 'package:flutter/material.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+import 'package:qr_flutter/qr_flutter.dart';
+import 'package:share_plus/share_plus.dart';
+import 'package:simplecloudnotifier/api/api_client.dart';
+import 'package:simplecloudnotifier/components/layout/scaffold.dart';
+import 'package:simplecloudnotifier/models/channel.dart';
+import 'package:simplecloudnotifier/models/subscription.dart';
+import 'package:simplecloudnotifier/models/user.dart';
+import 'package:simplecloudnotifier/pages/channel_message_view/channel_message_view.dart';
+import 'package:simplecloudnotifier/state/app_auth.dart';
+import 'package:simplecloudnotifier/state/app_bar_state.dart';
+import 'package:simplecloudnotifier/state/application_log.dart';
+import 'package:simplecloudnotifier/types/immediate_future.dart';
+import 'package:simplecloudnotifier/utils/navi.dart';
+import 'package:simplecloudnotifier/utils/toaster.dart';
+import 'package:simplecloudnotifier/utils/ui.dart';
+import 'package:provider/provider.dart';
+
+class ChannelViewPage extends StatefulWidget {
+  const ChannelViewPage({
+    required this.channelID,
+    required this.preloadedData,
+    required this.needsReload,
+    super.key,
+  });
+
+  final String channelID;
+  final (Channel, Subscription?)? preloadedData;
+
+  final void Function()? needsReload;
+
+  @override
+  State<ChannelViewPage> createState() => _ChannelViewPageState();
+}
+
+enum EditState { none, editing, saving }
+
+enum ChannelViewPageInitState { loading, okay, error }
+
+class _ChannelViewPageState extends State<ChannelViewPage> {
+  late ImmediateFuture<String?> _futureSubscribeKey;
+  late ImmediateFuture<List<(Subscription, UserPreview?)>> _futureSubscriptions;
+  late ImmediateFuture<UserPreview> _futureOwner;
+
+  final TextEditingController _ctrlDisplayName = TextEditingController();
+  final TextEditingController _ctrlDescriptionName = TextEditingController();
+
+  int _loadingIndeterminateCounter = 0;
+
+  EditState _editDisplayName = EditState.none;
+  String? _displayNameOverride = null;
+
+  EditState _editDescriptionName = EditState.none;
+  String? _descriptionNameOverride = null;
+
+  ChannelPreview? channelPreview;
+  Channel? channel;
+  Subscription? subscription;
+
+  ChannelViewPageInitState loadingState = ChannelViewPageInitState.loading;
+  String errorMessage = '';
+
+  @override
+  void initState() {
+    _initStateAsync();
+
+    super.initState();
+  }
+
+  @override
+  void _initStateAsync() async {
+    final userAcc = Provider.of<AppAuth>(context, listen: false);
+
+    if (widget.preloadedData != null) {
+      channelPreview = widget.preloadedData!.$1.toPreview();
+      channel = widget.preloadedData!.$1;
+      subscription = widget.preloadedData!.$2;
+    } else {
+      try {
+        var p = await APIClient.getChannelPreview(userAcc, widget.channelID);
+        channelPreview = p;
+        if (p.ownerUserID == userAcc.userID) {
+          var r = await APIClient.getChannel(userAcc, widget.channelID);
+          channel = r.channel;
+          subscription = r.subscription;
+        } else {
+          channel = null;
+          subscription = null; //TODO get own subscription on this channel, even though its foreign channel
+        }
+      } catch (exc, trace) {
+        ApplicationLog.error('Failed to load data: ' + exc.toString(), trace: trace);
+        Toaster.error("Error", 'Failed to load data');
+        this.errorMessage = 'Failed to load data: ' + exc.toString();
+        this.loadingState = ChannelViewPageInitState.error;
+        return;
+      }
+    }
+
+    this.loadingState = ChannelViewPageInitState.okay;
+
+    assert(channelPreview != null);
+
+    if (this.channelPreview!.ownerUserID == userAcc.userID) {
+      if (this.channel != null && this.channel!.subscribeKey != null) {
+        _futureSubscribeKey = ImmediateFuture<String?>.ofValue(this.channel!.subscribeKey);
+      } else {
+        _futureSubscribeKey = ImmediateFuture<String?>.ofFuture(_getSubscribeKey(userAcc));
+      }
+      _futureSubscriptions = ImmediateFuture<List<(Subscription, UserPreview?)>>.ofFuture(_listSubscriptions(userAcc));
+    } else {
+      _futureSubscribeKey = ImmediateFuture<String?>.ofValue(null);
+      _futureSubscriptions = ImmediateFuture<List<(Subscription, UserPreview?)>>.ofValue([]);
+    }
+
+    if (this.channelPreview!.ownerUserID == userAcc.userID) {
+      var cacheUser = userAcc.getUserOrNull();
+      if (cacheUser != null) {
+        _futureOwner = ImmediateFuture<UserPreview>.ofValue(cacheUser.toPreview());
+      } else {
+        _futureOwner = ImmediateFuture<UserPreview>.ofFuture(_getOwner(userAcc));
+      }
+    } else {
+      _futureOwner = ImmediateFuture<UserPreview>.ofFuture(APIClient.getUserPreview(userAcc, this.channelPreview!.ownerUserID));
+    }
+  }
+
+  @override
+  void dispose() {
+    _ctrlDisplayName.dispose();
+    _ctrlDescriptionName.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final userAcc = Provider.of<AppAuth>(context, listen: false);
+
+    Widget child;
+
+    if (loadingState == ChannelViewPageInitState.loading) {
+      child = Center(child: CircularProgressIndicator());
+    } else if (loadingState == ChannelViewPageInitState.error) {
+      child = Center(child: Text('Error: ' + errorMessage)); //TODO better error
+    } else if (loadingState == ChannelViewPageInitState.okay && channelPreview!.ownerUserID == userAcc.userID) {
+      child = _buildOwnedChannelView(context, this.channel!);
+    } else {
+      child = _buildForeignChannelView(context, this.channelPreview!);
+    }
+
+    return SCNScaffold(
+      title: 'Channel',
+      showSearch: false,
+      showShare: false,
+      child: child,
+    );
+  }
+
+  Widget _buildOwnedChannelView(BuildContext context, Channel channel) {
+    final isSubscribed = (subscription != null && subscription!.confirmed);
+
+    return SingleChildScrollView(
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(24, 16, 24, 16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            _buildQRCode(context),
+            SizedBox(height: 8),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidIdCardClip,
+              title: 'ChannelID',
+              values: [channel.channelID],
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidInputNumeric,
+              title: 'InternalName',
+              values: [channel.internalName],
+            ),
+            _buildDisplayNameCard(context, true),
+            _buildDescriptionNameCard(context, true),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidDiagramSubtask,
+              title: 'Subscription (own)',
+              values: [_formatSubscriptionStatus(this.subscription)],
+              iconActions: isSubscribed ? [(FontAwesomeIcons.solidSquareXmark, _unsubscribe)] : [(FontAwesomeIcons.solidSquareRss, _subscribe)],
+            ),
+            _buildForeignSubscriptions(context),
+            _buildOwnerCard(context, true),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidEnvelope,
+              title: 'Messages',
+              values: [channel.messagesSent.toString()],
+              mainAction: () {
+                Navi.push(context, () => ChannelMessageViewPage(channel: channel));
+              },
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildForeignChannelView(BuildContext context, ChannelPreview channel) {
+    final isSubscribed = (subscription != null && subscription!.confirmed);
+
+    return SingleChildScrollView(
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(24, 16, 24, 16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            SizedBox(height: 8),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidIdCardClip,
+              title: 'ChannelID',
+              values: [channel.channelID],
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidInputNumeric,
+              title: 'InternalName',
+              values: [channel.internalName],
+            ),
+            _buildDisplayNameCard(context, false),
+            _buildDescriptionNameCard(context, false),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidDiagramSubtask,
+              title: 'Subscription (own)',
+              values: [_formatSubscriptionStatus(subscription)],
+              iconActions: isSubscribed ? [(FontAwesomeIcons.solidSquareXmark, _unsubscribe)] : [(FontAwesomeIcons.solidSquareRss, _subscribe)],
+            ),
+            _buildForeignSubscriptions(context),
+            _buildOwnerCard(context, false),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildForeignSubscriptions(BuildContext context) {
+    return FutureBuilder(
+      future: _futureSubscriptions.future,
+      builder: (context, snapshot) {
+        if (snapshot.hasData) {
+          return Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              for (final (sub, user) in snapshot.data!.where((v) => v.$1.subscriptionID != subscription?.subscriptionID))
+                UI.metaCard(
+                  context: context,
+                  icon: FontAwesomeIcons.solidDiagramSuccessor,
+                  title: 'Subscription (' + (user?.username ?? user?.userID ?? 'other') + ')',
+                  values: [_formatSubscriptionStatus(sub)],
+                  iconActions: _getForeignSubActions(sub),
+                ),
+            ],
+          );
+        } else {
+          return SizedBox();
+        }
+      },
+    );
+  }
+
+  Widget _buildOwnerCard(BuildContext context, bool isOwned) {
+    return FutureBuilder(
+      future: _futureOwner.future,
+      builder: (context, snapshot) {
+        if (snapshot.hasData) {
+          return UI.metaCard(
+            context: context,
+            icon: FontAwesomeIcons.solidUser,
+            title: 'Owner',
+            values: [channelPreview!.ownerUserID + (isOwned ? ' (you)' : ''), if (snapshot.data?.username != null) snapshot.data!.username!],
+          );
+        } else {
+          return UI.metaCard(
+            context: context,
+            icon: FontAwesomeIcons.solidUser,
+            title: 'Owner',
+            values: [channelPreview!.ownerUserID + (isOwned ? ' (you)' : '')],
+          );
+        }
+      },
+    );
+  }
+
+  Widget _buildQRCode(BuildContext context) {
+    return FutureBuilder(
+      future: _futureSubscribeKey.future,
+      builder: (context, snapshot) {
+        if (snapshot.hasData && snapshot.data != null) {
+          var text = 'TODO' + '\n' + channel!.channelID + '\n' + snapshot.data!; //TODO deeplink-y (also perhaps just bas64 everything together?)
+          return GestureDetector(
+            onTap: () {
+              Share.share(text, subject: _displayNameOverride ?? channel!.displayName);
+            },
+            child: Center(
+              child: QrImageView(
+                data: text,
+                version: QrVersions.auto,
+                size: 300.0,
+                eyeStyle: QrEyeStyle(
+                  eyeShape: QrEyeShape.square,
+                  color: Theme.of(context).textTheme.bodyLarge?.color,
+                ),
+                dataModuleStyle: QrDataModuleStyle(
+                  dataModuleShape: QrDataModuleShape.square,
+                  color: Theme.of(context).textTheme.bodyLarge?.color,
+                ),
+              ),
+            ),
+          );
+        } else if (snapshot.hasData && snapshot.data == null) {
+          return const SizedBox(
+            width: 300.0,
+            height: 300.0,
+            child: Center(child: Icon(FontAwesomeIcons.solidSnake, size: 64)),
+          );
+        } else {
+          return const SizedBox(
+            width: 300.0,
+            height: 300.0,
+            child: Center(child: CircularProgressIndicator()),
+          );
+        }
+      },
+    );
+  }
+
+  Widget _buildDisplayNameCard(BuildContext context, bool isOwned) {
+    if (_editDisplayName == EditState.editing) {
+      return Padding(
+        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
+        child: UI.box(
+          context: context,
+          padding: EdgeInsets.fromLTRB(16, 2, 4, 2),
+          child: Row(
+            children: [
+              Container(child: Center(child: FaIcon(FontAwesomeIcons.solidInputText, size: 18)), height: 43),
+              SizedBox(width: 16),
+              Expanded(
+                child: TextField(
+                  autofocus: true,
+                  controller: _ctrlDisplayName,
+                  decoration: new InputDecoration.collapsed(hintText: 'DisplayName'),
+                ),
+              ),
+              SizedBox(width: 12),
+              SizedBox(width: 4),
+              IconButton(icon: FaIcon(FontAwesomeIcons.solidFloppyDisk), onPressed: _saveDisplayName),
+            ],
+          ),
+        ),
+      );
+    } else if (_editDisplayName == EditState.none) {
+      return UI.metaCard(
+        context: context,
+        icon: FontAwesomeIcons.solidInputText,
+        title: 'DisplayName',
+        values: [_displayNameOverride ?? channelPreview!.displayName],
+        iconActions: isOwned ? [(FontAwesomeIcons.penToSquare, _showEditDisplayName)] : [],
+      );
+    } else if (_editDisplayName == EditState.saving) {
+      return Padding(
+        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
+        child: UI.box(
+          context: context,
+          padding: EdgeInsets.fromLTRB(16, 2, 4, 2),
+          child: Row(
+            children: [
+              Container(child: Center(child: FaIcon(FontAwesomeIcons.solidInputText, size: 18)), height: 43),
+              SizedBox(width: 16),
+              Expanded(child: SizedBox()),
+              SizedBox(width: 12),
+              SizedBox(width: 4),
+              Padding(padding: const EdgeInsets.all(8.0), child: SizedBox(width: 18, height: 18, child: CircularProgressIndicator())),
+            ],
+          ),
+        ),
+      );
+    } else {
+      throw 'Invalid EditDisplayNameState: $_editDisplayName';
+    }
+  }
+
+  Widget _buildDescriptionNameCard(BuildContext context, bool isOwned) {
+    if (_editDescriptionName == EditState.editing) {
+      return Padding(
+        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
+        child: UI.box(
+          context: context,
+          padding: EdgeInsets.fromLTRB(16, 2, 4, 2),
+          child: Row(
+            children: [
+              Container(child: Center(child: FaIcon(FontAwesomeIcons.solidInputPipe, size: 18)), height: 43),
+              SizedBox(width: 16),
+              Expanded(
+                child: TextField(
+                  autofocus: true,
+                  controller: _ctrlDescriptionName,
+                  decoration: new InputDecoration.collapsed(hintText: 'Description'),
+                ),
+              ),
+              SizedBox(width: 12),
+              SizedBox(width: 4),
+              IconButton(icon: FaIcon(FontAwesomeIcons.solidFloppyDisk), onPressed: _saveDescriptionName),
+            ],
+          ),
+        ),
+      );
+    } else if (_editDescriptionName == EditState.none) {
+      return UI.metaCard(
+        context: context,
+        icon: FontAwesomeIcons.solidInputPipe,
+        title: 'Description',
+        values: [_descriptionNameOverride ?? channelPreview?.descriptionName ?? ''],
+        iconActions: isOwned ? [(FontAwesomeIcons.penToSquare, _showEditDescriptionName)] : [],
+      );
+    } else if (_editDescriptionName == EditState.saving) {
+      return Padding(
+        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
+        child: UI.box(
+          context: context,
+          padding: EdgeInsets.fromLTRB(16, 2, 4, 2),
+          child: Row(
+            children: [
+              Container(child: Center(child: FaIcon(FontAwesomeIcons.solidInputPipe, size: 18)), height: 43),
+              SizedBox(width: 16),
+              Expanded(child: SizedBox()),
+              SizedBox(width: 12),
+              SizedBox(width: 4),
+              Padding(padding: const EdgeInsets.all(8.0), child: SizedBox(width: 18, height: 18, child: CircularProgressIndicator())),
+            ],
+          ),
+        ),
+      );
+    } else {
+      throw 'Invalid EditDescriptionNameState: $_editDescriptionName';
+    }
+  }
+
+  void _subscribe() {
+    //TODO
+  }
+
+  void _unsubscribe() {
+    //TODO
+  }
+
+  void _showEditDisplayName() {
+    setState(() {
+      _ctrlDisplayName.text = _displayNameOverride ?? channelPreview?.displayName ?? '';
+      _editDisplayName = EditState.editing;
+      if (_editDescriptionName == EditState.editing) _editDescriptionName = EditState.none;
+    });
+  }
+
+  void _saveDisplayName() async {
+    final userAcc = Provider.of<AppAuth>(context, listen: false);
+
+    final newName = _ctrlDisplayName.text;
+
+    try {
+      setState(() {
+        _editDisplayName = EditState.saving;
+      });
+
+      final newChannel = await APIClient.updateChannel(userAcc, widget.channelID, displayName: newName);
+
+      setState(() {
+        _editDisplayName = EditState.none;
+        _displayNameOverride = newChannel.channel.displayName;
+      });
+
+      widget.needsReload?.call();
+    } catch (exc, trace) {
+      ApplicationLog.error('Failed to save DisplayName: ' + exc.toString(), trace: trace);
+      Toaster.error("Error", 'Failed to save DisplayName');
+    }
+  }
+
+  void _showEditDescriptionName() {
+    setState(() {
+      _ctrlDescriptionName.text = _descriptionNameOverride ?? channelPreview?.descriptionName ?? '';
+      _editDescriptionName = EditState.editing;
+      if (_editDisplayName == EditState.editing) _editDisplayName = EditState.none;
+    });
+  }
+
+  void _saveDescriptionName() async {
+    final userAcc = Provider.of<AppAuth>(context, listen: false);
+
+    final newName = _ctrlDescriptionName.text;
+
+    try {
+      setState(() {
+        _editDescriptionName = EditState.saving;
+      });
+
+      final newChannel = await APIClient.updateChannel(userAcc, widget.channelID, descriptionName: newName);
+
+      setState(() {
+        _editDescriptionName = EditState.none;
+        _descriptionNameOverride = newChannel.channel.descriptionName ?? '';
+      });
+
+      widget.needsReload?.call();
+    } catch (exc, trace) {
+      ApplicationLog.error('Failed to save DescriptionName: ' + exc.toString(), trace: trace);
+      Toaster.error("Error", 'Failed to save DescriptionName');
+    }
+  }
+
+  void _cancelForeignSubscription(Subscription sub) {
+    //TODO
+  }
+
+  void _confirmForeignSubscription(Subscription sub) {
+    //TODO
+  }
+
+  void _denyForeignSubscription(Subscription sub) {
+    //TODO
+  }
+
+  String _formatSubscriptionStatus(Subscription? subscription) {
+    if (subscription == null) {
+      return 'Not Subscribed';
+    } else if (subscription.confirmed) {
+      return 'Subscribed';
+    } else {
+      return 'Requested';
+    }
+  }
+
+  Future<String?> _getSubscribeKey(AppAuth auth) async {
+    try {
+      await Future.delayed(const Duration(seconds: 0), () {}); // this is annoyingly important - otherwise we call setLoadingIndeterminate directly in initStat() and get an exception....
+
+      _incLoadingIndeterminateCounter(1);
+
+      var channel = await APIClient.getChannel(auth, widget.channelID);
+
+      //await Future.delayed(const Duration(seconds: 10), () {});
+
+      return channel.channel.subscribeKey;
+    } finally {
+      _incLoadingIndeterminateCounter(-1);
+    }
+  }
+
+  Future<List<(Subscription, UserPreview?)>> _listSubscriptions(AppAuth auth) async {
+    try {
+      await Future.delayed(const Duration(seconds: 0), () {}); // this is annoyingly important - otherwise we call setLoadingIndeterminate directly in initStat() and get an exception....
+
+      _incLoadingIndeterminateCounter(1);
+
+      var subs = await APIClient.getChannelSubscriptions(auth, widget.channelID);
+
+      var userMap = {for (var v in (await Future.wait(subs.map((e) => e.subscriberUserID).toSet().map((e) => APIClient.getUserPreview(auth, e)).toList()))) v.userID: v};
+
+      //await Future.delayed(const Duration(seconds: 10), () {});
+
+      return subs.map((e) => (e, userMap[e.subscriberUserID] ?? null)).toList();
+    } finally {
+      _incLoadingIndeterminateCounter(-1);
+    }
+  }
+
+  Future<UserPreview> _getOwner(AppAuth auth) async {
+    try {
+      await Future.delayed(const Duration(seconds: 0), () {}); // this is annoyingly important - otherwise we call setLoadingIndeterminate directly in initStat() and get an exception....
+
+      _incLoadingIndeterminateCounter(1);
+
+      final owner = APIClient.getUserPreview(auth, channelPreview!.ownerUserID);
+
+      //await Future.delayed(const Duration(seconds: 10), () {});
+
+      return owner;
+    } finally {
+      _incLoadingIndeterminateCounter(-1);
+    }
+  }
+
+  List<(IconData, void Function())> _getForeignSubActions(Subscription sub) {
+    if (sub.confirmed) {
+      return [(FontAwesomeIcons.solidSquareXmark, () => _cancelForeignSubscription(sub))];
+    } else {
+      return [
+        (FontAwesomeIcons.solidSquareCheck, () => _confirmForeignSubscription(sub)),
+        (FontAwesomeIcons.solidSquareXmark, () => _denyForeignSubscription(sub)),
+      ];
+    }
+  }
+
+  void _incLoadingIndeterminateCounter(int delta) {
+    setState(() {
+      _loadingIndeterminateCounter += delta;
+      AppBarState().setLoadingIndeterminate(_loadingIndeterminateCounter > 0);
+    });
+  }
+}

flutter/lib/pages/debug/debug_actions.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:simplecloudnotifier/utils/notifier.dart';
 import 'package:simplecloudnotifier/utils/toaster.dart';
 import 'package:simplecloudnotifier/utils/ui.dart';
 
@@ -52,6 +53,12 @@ class _DebugActionsPageState extends State<DebugActionsPage> {
                 onPressed: _sendTokenToServer,
                 text: 'Send FCM Token to Server',
               ),
+              SizedBox(height: 20),
+              UI.button(
+                big: false,
+                onPressed: () => Notifier.showLocalNotification('', 'TEST_CHANNEL', "Test Channel", "Channel for testing", "Hello World", "Local Notification test", null),
+                text: 'Show local notification',
+              ),
             ],
           ),
         ),

flutter/lib/pages/debug/debug_main.dart

@@ -30,7 +30,6 @@ class _DebugMainPageState extends State<DebugMainPage> {
     return SCNScaffold(
       title: 'Debug',
       showSearch: false,
-      showDebug: false,
       child: Column(
         children: [
           Padding(

flutter/lib/pages/debug/debug_persistence.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
 import 'package:simplecloudnotifier/pages/debug/debug_persistence_hive.dart';
 import 'package:simplecloudnotifier/pages/debug/debug_persistence_sharedprefs.dart';
 import 'package:simplecloudnotifier/state/application_log.dart';
@@ -36,7 +36,7 @@ class _DebugPersistencePageState extends State<DebugPersistencePage> {
           _buildSharedPrefCard(context),
           _buildHiveCard(context, () => Hive.box<SCNRequest>('scn-requests'), 'scn-requests'),
           _buildHiveCard(context, () => Hive.box<SCNLog>('scn-logs'), 'scn-logs'),
-          _buildHiveCard(context, () => Hive.box<Message>('scn-message-cache'), 'scn-message-cache'),
+          _buildHiveCard(context, () => Hive.box<SCNMessage>('scn-message-cache'), 'scn-message-cache'),
           _buildHiveCard(context, () => Hive.box<Channel>('scn-channel-cache'), 'scn-channel-cache'),
           _buildHiveCard(context, () => Hive.box<FBMessage>('scn-fb-messages'), 'scn-fb-messages'),
         ],
@@ -71,7 +71,7 @@ class _DebugPersistencePageState extends State<DebugPersistencePage> {
         padding: const EdgeInsets.all(8.0),
         child: GestureDetector(
           onTap: () {
-            Navi.push(context, () => DebugHiveBoxPage(boxName: boxname, box: Hive.box<FBMessage>(boxname)));
+            Navi.push(context, () => DebugHiveBoxPage(boxName: boxname, box: boxFunc()));
           },
           child: Row(
             mainAxisAlignment: MainAxisAlignment.spaceBetween,

flutter/lib/pages/debug/debug_persistence_hive.dart

@@ -16,7 +16,6 @@ class DebugHiveBoxPage extends StatelessWidget {
     return SCNScaffold(
       title: 'Hive: ' + boxName,
       showSearch: false,
-      showDebug: false,
       child: ListView.separated(
         itemCount: box.length,
         itemBuilder: (context, listIndex) {
@@ -24,8 +23,9 @@ class DebugHiveBoxPage extends StatelessWidget {
             onTap: () {
               Navi.push(context, () => DebugHiveEntryPage(value: box.getAt(listIndex)!));
             },
-            child: ListTile(
+            child: Container(
-              title: Text(box.getAt(listIndex).toString(), style: TextStyle(fontWeight: FontWeight.bold)),
+              padding: EdgeInsets.fromLTRB(8, 4, 8, 4),
+              child: Text(box.getAt(listIndex).toString(), style: TextStyle(fontWeight: FontWeight.bold, fontSize: 12)),
             ),
           );
         },

flutter/lib/pages/debug/debug_persistence_hiveentry.dart

@@ -13,11 +13,13 @@ class DebugHiveEntryPage extends StatelessWidget {
     return SCNScaffold(
       title: 'HiveEntry',
       showSearch: false,
-      showDebug: false,
       child: ListView.separated(
         itemCount: fields.length,
         itemBuilder: (context, listIndex) {
           return ListTile(
+            dense: true,
+            contentPadding: EdgeInsets.fromLTRB(8, 0, 8, 0),
+            visualDensity: VisualDensity(horizontal: 0, vertical: -4),
             title: Text(fields[listIndex].$1, style: TextStyle(fontWeight: FontWeight.bold)),
             subtitle: Text(fields[listIndex].$2, style: TextStyle(fontFamily: "monospace")),
           );

flutter/lib/pages/debug/debug_persistence_sharedprefs.dart

@@ -13,7 +13,6 @@ class DebugSharedPrefPage extends StatelessWidget {
     return SCNScaffold(
       title: 'SharedPreferences',
       showSearch: false,
-      showDebug: false,
       child: ListView.separated(
         itemCount: sharedPref.getKeys().length,
         itemBuilder: (context, listIndex) {

flutter/lib/pages/debug/debug_request_view.dart

@@ -16,7 +16,6 @@ class DebugRequestViewPage extends StatelessWidget {
     return SCNScaffold(
       title: 'Request',
       showSearch: false,
-      showDebug: false,
       child: SingleChildScrollView(
         child: Padding(
           padding: const EdgeInsets.all(8.0),

flutter/lib/pages/message_list/message_filter_chiplet.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/src/widgets/icon_data.dart';
+import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+
+enum MessageFilterChipletType {
+  search,
+  channel,
+  sender,
+  timeRange,
+  priority,
+  sendkey,
+}
+
+class MessageFilterChiplet {
+  final String label;
+  final String value;
+  final MessageFilterChipletType type;
+
+  MessageFilterChiplet({required this.label, required this.value, required this.type});
+
+  IconData? icon() {
+    switch (type) {
+      case MessageFilterChipletType.search:
+        return FontAwesomeIcons.magnifyingGlass;
+      case MessageFilterChipletType.channel:
+        return FontAwesomeIcons.snake;
+      case MessageFilterChipletType.sender:
+        return FontAwesomeIcons.signature;
+      case MessageFilterChipletType.timeRange:
+        return FontAwesomeIcons.timer;
+      case MessageFilterChipletType.priority:
+        return FontAwesomeIcons.bolt;
+      case MessageFilterChipletType.sendkey:
+        return FontAwesomeIcons.gearCode;
+    }
+  }
+}

flutter/lib/pages/message_list/message_list.dart

@@ -1,15 +1,18 @@
 import 'package:flutter/material.dart';
-import 'package:hive_flutter/hive_flutter.dart';
 import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 import 'package:provider/provider.dart';
 import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
+import 'package:simplecloudnotifier/pages/message_list/message_filter_chiplet.dart';
 import 'package:simplecloudnotifier/pages/message_view/message_view.dart';
+import 'package:simplecloudnotifier/settings/app_settings.dart';
 import 'package:simplecloudnotifier/state/app_bar_state.dart';
+import 'package:simplecloudnotifier/state/app_events.dart';
 import 'package:simplecloudnotifier/state/application_log.dart';
 import 'package:simplecloudnotifier/state/app_auth.dart';
 import 'package:simplecloudnotifier/pages/message_list/message_list_item.dart';
+import 'package:simplecloudnotifier/state/scn_data_cache.dart';
 import 'package:simplecloudnotifier/utils/navi.dart';
 
 class MessageListPage extends StatefulWidget {
@@ -17,28 +20,28 @@ class MessageListPage extends StatefulWidget {
 
   final bool isVisiblePage;
 
-  //TODO reload on switch to tab
-  //TODO reload on app to foreground
-
   @override
   State<MessageListPage> createState() => _MessageListPageState();
 }
 
 class _MessageListPageState extends State<MessageListPage> with RouteAware {
-  static const _pageSize = 128;
-
   late final AppLifecycleListener _lifecyleListener;
 
-  PagingController<String, Message> _pagingController = PagingController.fromValue(PagingState(nextPageKey: null, itemList: [], error: null), firstPageKey: '@start');
+  PagingController<String, SCNMessage> _pagingController = PagingController.fromValue(PagingState(nextPageKey: null, itemList: [], error: null), firstPageKey: '@start');
 
   Map<String, Channel>? _channels = null;
 
   bool _isInitialized = false;
 
+  List<MessageFilterChiplet> _filterChiplets = [];
+
   @override
   void initState() {
     super.initState();
 
+    AppEvents().subscribeSearchListener(_onAppBarSearch);
+    AppEvents().subscribeMessageReceivedListener(_onMessageReceivedViaNotification);
+
     _pagingController.addPageRequestListener(_fetchPage);
 
     if (widget.isVisiblePage && !_isInitialized) _realInitState();
@@ -64,18 +67,12 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
   void _realInitState() {
     ApplicationLog.debug('MessageListPage::_realInitState');
 
-    final chnCache = Hive.box<Channel>('scn-channel-cache');
+    if (SCNDataCache().hasMessagesAndChannels()) {
-    final msgCache = Hive.box<Message>('scn-message-cache');
-
-    if (chnCache.isNotEmpty && msgCache.isNotEmpty) {
       // ==== Use cache values - and refresh in background
 
-      _channels = <String, Channel>{for (var v in chnCache.values) v.channelID: v};
+      _channels = SCNDataCache().getChannelMap();
 
-      final cacheMessages = msgCache.values.toList();
+      _pagingController.value = PagingState(nextPageKey: null, itemList: SCNDataCache().getMessagesSorted(), error: null);
-      cacheMessages.sort((a, b) => -1 * a.timestamp.compareTo(b.timestamp));
-
-      _pagingController.value = PagingState(nextPageKey: null, itemList: cacheMessages, error: null);
 
       _backgroundRefresh(true);
     } else {
@@ -95,6 +92,8 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
   @override
   void dispose() {
     ApplicationLog.debug('MessageListPage::dispose');
+    AppEvents().unsubscribeSearchListener(_onAppBarSearch);
+    AppEvents().unsubscribeMessageReceivedListener(_onMessageReceivedViaNotification);
     Navi.modalRouteObserver.unsubscribe(this);
     _pagingController.dispose();
     _lifecyleListener.dispose();
@@ -108,17 +107,22 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
 
   @override
   void didPopNext() {
+    if (AppSettings().backgroundRefreshMessageListOnPop) {
       ApplicationLog.debug('[MessageList::RouteObserver] --> didPopNext (will background-refresh)');
       _backgroundRefresh(false);
     }
+  }
 
   void _onLifecycleResume() {
+    if (AppSettings().alwaysBackgroundRefreshMessageListOnLifecycleResume && widget.isVisiblePage) {
       ApplicationLog.debug('[MessageList::_onLifecycleResume] --> (will background-refresh)');
       _backgroundRefresh(false);
     }
+  }
 
   Future<void> _fetchPage(String thisPageToken) async {
     final acc = Provider.of<AppAuth>(context, listen: false);
+    final cfg = Provider.of<AppSettings>(context, listen: false);
 
     ApplicationLog.debug('Start MessageList::_pagingController::_fetchPage [ ${thisPageToken} ]');
 
@@ -132,12 +136,12 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
         final channels = await APIClient.getChannelList(acc, ChannelSelector.allAny);
         _channels = <String, Channel>{for (var v in channels) v.channel.channelID: v.channel};
 
-        _setChannelCache(channels); // no await
+        SCNDataCache().setChannelCache(channels); // no await
       }
 
-      final (npt, newItems) = await APIClient.getMessageList(acc, thisPageToken, pageSize: _pageSize);
+      final (npt, newItems) = await APIClient.getMessageList(acc, thisPageToken, pageSize: cfg.messagePageSize);
 
-      _addToMessageCache(newItems); // no await
+      SCNDataCache().addToMessageCache(newItems); // no await
 
       ApplicationLog.debug('Finished MessageList::_pagingController::_fetchPage [ ${newItems.length} items and npt: ${thisPageToken} --> ${npt} ]');
 
@@ -154,6 +158,7 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
 
   Future<void> _backgroundRefresh(bool fullReplaceState) async {
     final acc = Provider.of<AppAuth>(context, listen: false);
+    final cfg = Provider.of<AppSettings>(context, listen: false);
 
     ApplicationLog.debug('Start background refresh of message list (fullReplaceState: $fullReplaceState)');
 
@@ -167,12 +172,12 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
         setState(() {
           _channels = <String, Channel>{for (var v in channels) v.channel.channelID: v.channel};
         });
-        _setChannelCache(channels); // no await
+        SCNDataCache().setChannelCache(channels); // no await
       }
 
-      final (npt, newItems) = await APIClient.getMessageList(acc, '@start', pageSize: _pageSize);
+      final (npt, newItems) = await APIClient.getMessageList(acc, '@start', pageSize: cfg.messagePageSize);
 
-      _addToMessageCache(newItems); // no await
+      SCNDataCache().addToMessageCache(newItems); // no await
 
       if (fullReplaceState) {
         // fully replace/reset state
@@ -221,49 +226,63 @@ class _MessageListPageState extends State<MessageListPage> with RouteAware {
   Widget build(BuildContext context) {
     return Padding(
       padding: EdgeInsets.fromLTRB(8, 4, 8, 4),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          if (_filterChiplets.isNotEmpty)
+            Wrap(
+              alignment: WrapAlignment.start,
+              spacing: 5.0,
+              children: [
+                for (var chiplet in _filterChiplets) _buildFilterChip(context, chiplet),
+              ],
+            ),
+          Expanded(
             child: RefreshIndicator(
               onRefresh: () => Future.sync(
                 () => _pagingController.refresh(),
               ),
-        child: PagedListView<String, Message>(
+              child: PagedListView<String, SCNMessage>(
                 pagingController: _pagingController,
-          builderDelegate: PagedChildBuilderDelegate<Message>(
+                builderDelegate: PagedChildBuilderDelegate<SCNMessage>(
                   itemBuilder: (context, item, index) => MessageListItem(
                     message: item,
                     allChannels: _channels ?? {},
                     onPressed: () {
-                Navi.push(context, () => MessageViewPage(message: item));
+                      Navi.push(context, () => MessageViewPage(messageID: item.messageID, preloadedData: (item,)));
                     },
                   ),
                 ),
               ),
             ),
+          ),
+        ],
+      ),
     );
   }
 
-  Future<void> _setChannelCache(List<ChannelWithSubscription> channels) async {
+  Widget _buildFilterChip(BuildContext context, MessageFilterChiplet chiplet) {
-    final cache = Hive.box<Channel>('scn-channel-cache');
+    return Padding(
-
+      padding: const EdgeInsets.fromLTRB(0, 2, 0, 2),
-    if (cache.length != channels.length) await cache.clear();
+      child: InputChip(
-
+        avatar: Icon(chiplet.icon()),
-    for (var chn in channels) await cache.put(chn.channel.channelID, chn.channel);
+        label: Text(chiplet.label),
+        onDeleted: () => setState(() => _filterChiplets.remove(chiplet)),
+        onPressed: () {/* TODO idk what to do here ? */},
+        visualDensity: VisualDensity(horizontal: -4, vertical: -4),
+      ),
+    );
   }
 
-  Future<void> _addToMessageCache(List<Message> newItems) async {
+  void _onAppBarSearch(String str) {
-    final cache = Hive.box<Message>('scn-message-cache');
+    setState(() {
-
+      _filterChiplets = _filterChiplets.where((element) => false).toList() + [MessageFilterChiplet(label: str, value: str, type: MessageFilterChipletType.search)];
-    for (var msg in newItems) await cache.put(msg.messageID, msg);
+    });
-
-    // delete all but the newest 128 messages
-
-    if (cache.length < _pageSize) return;
-
-    final allValues = cache.values.toList();
-
-    allValues.sort((a, b) => -1 * a.timestamp.compareTo(b.timestamp));
-
-    for (var val in allValues.sublist(_pageSize)) {
-      await cache.delete(val.messageID);
   }
+
+  void _onMessageReceivedViaNotification(SCNMessage msg) {
+    setState(() {
+      _pagingController.itemList = [msg] + (_pagingController.itemList ?? []);
+    });
   }
 }

flutter/lib/pages/message_list/message_list_item.dart

@@ -3,7 +3,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
 import 'package:intl/intl.dart';
 import 'package:simplecloudnotifier/utils/ui.dart';
 
@@ -18,7 +18,7 @@ class MessageListItem extends StatelessWidget {
     super.key,
   });
 
-  final Message message;
+  final SCNMessage message;
   final Map<String, Channel> allChannels;
   final Null Function() onPressed;
 
@@ -176,11 +176,11 @@ class MessageListItem extends StatelessWidget {
     return v;
   }
 
-  String resolveChannelName(Message message) {
+  String resolveChannelName(SCNMessage message) {
     return allChannels[message.channelID]?.displayName ?? message.channelInternalName;
   }
 
-  bool showChannel(Message message) {
+  bool showChannel(SCNMessage message) {
     return message.channelInternalName != 'main';
   }
 }

flutter/lib/pages/message_view/message_view.dart

@@ -8,36 +8,49 @@ import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/components/layout/scaffold.dart';
 import 'package:simplecloudnotifier/models/channel.dart';
 import 'package:simplecloudnotifier/models/keytoken.dart';
-import 'package:simplecloudnotifier/models/message.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
 import 'package:simplecloudnotifier/models/user.dart';
+import 'package:simplecloudnotifier/pages/channel_view/channel_view.dart';
 import 'package:simplecloudnotifier/state/app_auth.dart';
 import 'package:simplecloudnotifier/state/app_bar_state.dart';
+import 'package:simplecloudnotifier/utils/navi.dart';
 import 'package:simplecloudnotifier/utils/toaster.dart';
 import 'package:simplecloudnotifier/utils/ui.dart';
 
 class MessageViewPage extends StatefulWidget {
-  const MessageViewPage({super.key, required this.message});
+  const MessageViewPage({
+    super.key,
+    required this.messageID,
+    required this.preloadedData,
+  });
 
-  final Message message; // Potentially trimmed
+  final String messageID; // Potentially trimmed
+  final (SCNMessage,)? preloadedData; // Message is potentially trimmed, whole object is potentially null
 
   @override
   State<MessageViewPage> createState() => _MessageViewPageState();
 }
 
 class _MessageViewPageState extends State<MessageViewPage> {
-  late Future<(Message, ChannelPreview, KeyTokenPreview, UserPreview)>? mainFuture;
+  late Future<(SCNMessage, ChannelPreview, KeyTokenPreview, UserPreview)>? mainFuture;
-  (Message, ChannelPreview, KeyTokenPreview, UserPreview)? mainFutureSnapshot = null;
+  (SCNMessage, ChannelPreview, KeyTokenPreview, UserPreview)? mainFutureSnapshot = null;
   static final _dateFormat = DateFormat('yyyy-MM-dd kk:mm');
 
   bool _monospaceMode = false;
 
+  SCNMessage? message = null;
+
   @override
   void initState() {
+    if (widget.preloadedData != null) {
+      message = widget.preloadedData!.$1;
+    }
+
     mainFuture = fetchData();
     super.initState();
   }
 
-  Future<(Message, ChannelPreview, KeyTokenPreview, UserPreview)> fetchData() async {
+  Future<(SCNMessage, ChannelPreview, KeyTokenPreview, UserPreview)> fetchData() async {
     try {
       await Future.delayed(const Duration(seconds: 0), () {}); // this is annoyingly important - otherwise we call setLoadingIndeterminate directly in initStat() and get an exception....
 
@@ -45,7 +58,7 @@ class _MessageViewPageState extends State<MessageViewPage> {
 
       final acc = Provider.of<AppAuth>(context, listen: false);
 
-      final msg = await APIClient.getMessage(acc, widget.message.messageID);
+      final msg = await APIClient.getMessage(acc, widget.messageID);
 
       final fut_chn = APIClient.getChannelPreview(acc, msg.channelID);
       final fut_key = APIClient.getKeyTokenPreview(acc, msg.usedKeyID);
@@ -79,7 +92,7 @@ class _MessageViewPageState extends State<MessageViewPage> {
       showSearch: false,
       showShare: true,
       onShare: _share,
-      child: FutureBuilder<(Message, ChannelPreview, KeyTokenPreview, UserPreview)>(
+      child: FutureBuilder<(SCNMessage, ChannelPreview, KeyTokenPreview, UserPreview)>(
         future: mainFuture,
         builder: (context, snapshot) {
           if (snapshot.hasData) {
@@ -87,8 +100,8 @@ class _MessageViewPageState extends State<MessageViewPage> {
             return _buildMessageView(context, msg, chn, tok, usr);
           } else if (snapshot.hasError) {
             return Center(child: Text('${snapshot.error}')); //TODO nice error page
-          } else if (!widget.message.trimmed) {
+          } else if (message != null && !this.message!.trimmed) {
-            return _buildMessageView(context, widget.message, null, null, null);
+            return _buildMessageView(context, this.message!, null, null, null);
           } else {
             return const Center(child: CircularProgressIndicator());
           }
@@ -98,7 +111,9 @@ class _MessageViewPageState extends State<MessageViewPage> {
   }
 
   void _share() async {
-    var msg = widget.message;
+    if (this.message == null) return;
+
+    var msg = this.message!;
     if (mainFutureSnapshot != null) {
       (msg, _, _, _) = mainFutureSnapshot!;
     }
@@ -118,7 +133,7 @@ class _MessageViewPageState extends State<MessageViewPage> {
     }
   }
 
-  Widget _buildMessageView(BuildContext context, Message message, ChannelPreview? channel, KeyTokenPreview? token, UserPreview? user) {
+  Widget _buildMessageView(BuildContext context, SCNMessage message, ChannelPreview? channel, KeyTokenPreview? token, UserPreview? user) {
     final userAccUserID = context.select<AppAuth, String?>((v) => v.userID);
 
     return SingleChildScrollView(
@@ -131,12 +146,58 @@ class _MessageViewPageState extends State<MessageViewPage> {
             SizedBox(height: 8),
             if (message.content != null) ..._buildMessageContent(context, message),
             SizedBox(height: 8),
-            if (message.senderName != null) _buildMetaCard(context, FontAwesomeIcons.solidSignature, 'Sender', [message.senderName!], () => {/*TODO*/}),
+            if (message.senderName != null)
-            _buildMetaCard(context, FontAwesomeIcons.solidGearCode, 'KeyToken', [message.usedKeyID, if (token != null) token.name], () => {/*TODO*/}),
+              UI.metaCard(
-            _buildMetaCard(context, FontAwesomeIcons.solidIdCardClip, 'MessageID', [message.messageID, if (message.userMessageID != null) message.userMessageID!], null),
+                context: context,
-            _buildMetaCard(context, FontAwesomeIcons.solidSnake, 'Channel', [message.channelID, channel?.displayName ?? message.channelInternalName], () => {/*TODO*/}),
+                icon: FontAwesomeIcons.solidSignature,
-            _buildMetaCard(context, FontAwesomeIcons.solidTimer, 'Timestamp', [message.timestamp], null),
+                title: 'Sender',
-            _buildMetaCard(context, FontAwesomeIcons.solidUser, 'User', [if (user != null) user.userID, if (user?.username != null) user!.username!], () => {/*TODO*/}), //TODO
+                values: [message.senderName!],
+                mainAction: () => {/*TODO*/},
+              ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidGearCode,
+              title: 'KeyToken',
+              values: [message.usedKeyID, token?.name ?? '...'],
+              mainAction: () => {/*TODO*/},
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidIdCardClip,
+              title: 'MessageID',
+              values: [message.messageID, message.userMessageID ?? ''],
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidSnake,
+              title: 'Channel',
+              values: [message.channelID, channel?.displayName ?? message.channelInternalName],
+              mainAction: (channel != null)
+                  ? () {
+                      Navi.push(context, () => ChannelViewPage(channelID: channel.channelID, preloadedData: null, needsReload: null));
+                    }
+                  : null,
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidTimer,
+              title: 'Timestamp',
+              values: [message.timestamp],
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidUser,
+              title: 'User',
+              values: [user?.userID ?? '...', user?.username ?? ''],
+              mainAction: () => {/*TODO*/},
+            ),
+            UI.metaCard(
+              context: context,
+              icon: FontAwesomeIcons.solidBolt,
+              title: 'Priority',
+              values: [_prettyPrintPriority(message.priority)],
+              mainAction: () => {/*TODO*/},
+            ),
             if (message.senderUserID == userAccUserID) UI.button(text: "Delete Message", onPressed: () {/*TODO*/}, color: Colors.red[900]),
           ],
         ),
@@ -144,11 +205,11 @@ class _MessageViewPageState extends State<MessageViewPage> {
     );
   }
 
-  String _resolveChannelName(ChannelPreview? channel, Message message) {
+  String _resolveChannelName(ChannelPreview? channel, SCNMessage message) {
     return channel?.displayName ?? message.channelInternalName;
   }
 
-  List<Widget> _buildMessageHeader(BuildContext context, Message message, ChannelPreview? channel) {
+  List<Widget> _buildMessageHeader(BuildContext context, SCNMessage message, ChannelPreview? channel) {
     return [
       Row(
         children: [
@@ -167,7 +228,7 @@ class _MessageViewPageState extends State<MessageViewPage> {
     ];
   }
 
-  List<Widget> _buildMessageContent(BuildContext context, Message message) {
+  List<Widget> _buildMessageContent(BuildContext context, SCNMessage message) {
     return [
       Row(
         children: [
@@ -213,43 +274,20 @@ class _MessageViewPageState extends State<MessageViewPage> {
     ];
   }
 
-  Widget _buildMetaCard(BuildContext context, IconData icn, String title, List<String> values, void Function()? action) {
+  String _preformatTitle(SCNMessage message) {
-    final container = UI.box(
-      context: context,
-      padding: EdgeInsets.fromLTRB(16, 2, 4, 2),
-      child: Row(
-        children: [
-          FaIcon(icn, size: 18),
-          SizedBox(width: 16),
-          Column(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              Text(title, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
-              for (final val in values) Text(val, style: const TextStyle(fontSize: 14)),
-            ],
-          ),
-        ],
-      ),
-    );
-
-    if (action == null) {
-      return Padding(
-        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
-        child: container,
-      );
-    } else {
-      return Padding(
-        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
-        child: InkWell(
-          splashColor: Theme.of(context).splashColor,
-          onTap: action,
-          child: container,
-        ),
-      );
-    }
-  }
-
-  String _preformatTitle(Message message) {
     return message.title.replaceAll('\n', '').replaceAll('\r', '').replaceAll('\t', ' ');
   }
+
+  String _prettyPrintPriority(int priority) {
+    switch (priority) {
+      case 0:
+        return 'Low (0)';
+      case 1:
+        return 'Normal (1)';
+      case 2:
+        return 'High (2)';
+      default:
+        return 'Unknown ($priority)';
+    }
+  }
 }

flutter/lib/settings/app_settings.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+
+class AppSettings extends ChangeNotifier {
+  bool groupNotifications = true;
+  int messagePageSize = 128;
+  bool showDebugButton = true;
+  bool backgroundRefreshMessageListOnPop = false;
+  bool alwaysBackgroundRefreshMessageListOnLifecycleResume = true;
+
+  static AppSettings? _singleton = AppSettings._internal();
+
+  factory AppSettings() {
+    return _singleton ?? (_singleton = AppSettings._internal());
+  }
+
+  AppSettings._internal() {
+    load();
+  }
+
+  void clear() {
+    //TODO
+
+    notifyListeners();
+  }
+
+  void load() {
+    //TODO
+
+    notifyListeners();
+  }
+
+  Future<void> save() async {
+    //TODO
+  }
+}

flutter/lib/state/app_auth.dart

@@ -1,8 +1,11 @@
+import 'dart:convert';
+
 import 'package:flutter/foundation.dart';
 import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/api/api_exception.dart';
 import 'package:simplecloudnotifier/models/client.dart';
 import 'package:simplecloudnotifier/models/user.dart';
+import 'package:simplecloudnotifier/state/application_log.dart';
 import 'package:simplecloudnotifier/state/globals.dart';
 import 'package:simplecloudnotifier/state/token_source.dart';
 
@@ -12,9 +15,9 @@ class AppAuth extends ChangeNotifier implements TokenSource {
   String? _tokenAdmin;
   String? _tokenSend;
 
-  User? _user;
+  (User, DateTime)? _user;
-  Client? _client;
+
-  DateTime? _clientQueryTime;
+  (Client, DateTime)? _client;
 
   String? get userID => _userID;
   String? get tokenAdmin => _tokenAdmin;
@@ -35,17 +38,21 @@ class AppAuth extends ChangeNotifier implements TokenSource {
   }
 
   void set(User user, Client client, String tokenAdmin, String tokenSend) {
-    _client = client;
+    _client = (client, DateTime.now());
-    _user = user;
+
+    _user = (user, DateTime.now());
+
     _userID = user.userID;
     _clientID = client.clientID;
+
     _tokenAdmin = tokenAdmin;
     _tokenSend = tokenSend;
+
     notifyListeners();
   }
 
   void setClientAndClientID(Client client) {
-    _client = client;
+    _client = (client, DateTime.now());
     _clientID = client.clientID;
     notifyListeners();
   }
@@ -83,6 +90,33 @@ class AppAuth extends ChangeNotifier implements TokenSource {
     _client = null;
     _user = null;
 
+    final userjson = Globals().sharedPrefs.getString('auth.user.obj');
+    final userqdate = Globals().sharedPrefs.getString('auth.user.qdate');
+    final clientjson = Globals().sharedPrefs.getString('auth.client.obj');
+    final clientqdate = Globals().sharedPrefs.getString('auth.client.qdate');
+
+    if (userjson != null && userqdate != null) {
+      try {
+        final ts = DateTime.parse(userqdate);
+        final obj = User.fromJson(jsonDecode(userjson) as Map<String, dynamic>);
+        _user = (obj, ts);
+      } catch (exc, trace) {
+        ApplicationLog.error('failed to parse user object from shared-prefs (auth.user.obj): ' + exc.toString(), additional: 'Data:\n${userjson}\nQDate:\n${userqdate}', trace: trace);
+        _user = null;
+      }
+    }
+
+    if (clientjson != null && clientqdate != null) {
+      try {
+        final ts = DateTime.parse(clientqdate);
+        final obj = Client.fromJson(jsonDecode(clientjson) as Map<String, dynamic>);
+        _client = (obj, ts);
+      } catch (exc, trace) {
+        ApplicationLog.error('failed to parse user object from shared-prefs (auth.client.obj): ' + exc.toString(), additional: 'Data:\n${clientjson}\nQDate:\n${clientqdate}', trace: trace);
+        _client = null;
+      }
+    }
+
     notifyListeners();
   }
 
@@ -94,6 +128,10 @@ class AppAuth extends ChangeNotifier implements TokenSource {
       await Globals().sharedPrefs.remove('auth.tokensend');
       await Globals().sharedPrefs.setString('auth.cdate', "");
       await Globals().sharedPrefs.setString('auth.mdate', DateTime.now().toIso8601String());
+      await Globals().sharedPrefs.remove('auth.user.obj');
+      await Globals().sharedPrefs.remove('auth.user.qdate');
+      await Globals().sharedPrefs.remove('auth.client.obj');
+      await Globals().sharedPrefs.remove('auth.client.qdate');
     } else {
       await Globals().sharedPrefs.setString('auth.userid', _userID!);
       await Globals().sharedPrefs.setString('auth.clientid', _clientID!);
@@ -101,14 +139,34 @@ class AppAuth extends ChangeNotifier implements TokenSource {
       await Globals().sharedPrefs.setString('auth.tokensend', _tokenSend!);
       if (Globals().sharedPrefs.getString('auth.cdate') == null) await Globals().sharedPrefs.setString('auth.cdate', DateTime.now().toIso8601String());
       await Globals().sharedPrefs.setString('auth.mdate', DateTime.now().toIso8601String());
+
+      if (_user != null) {
+        await Globals().sharedPrefs.setString('auth.user.obj', jsonEncode(_user!.$1.toJson()));
+        await Globals().sharedPrefs.setString('auth.user.qdate', _user!.$2.toIso8601String());
+      } else {
+        await Globals().sharedPrefs.remove('auth.user.obj');
+        await Globals().sharedPrefs.remove('auth.user.qdate');
+      }
+
+      if (_client != null) {
+        await Globals().sharedPrefs.setString('auth.client.obj', jsonEncode(_client!.$1.toJson()));
+        await Globals().sharedPrefs.setString('auth.client.qdate', _client!.$2.toIso8601String());
+      } else {
+        await Globals().sharedPrefs.remove('auth.client.obj');
+        await Globals().sharedPrefs.remove('auth.client.qdate');
+      }
     }
 
     Globals().sharedPrefs.setString('auth.mdate', DateTime.now().toIso8601String());
   }
 
-  Future<User> loadUser({bool force = false}) async {
+  Future<User> loadUser({bool force = false, Duration? forceIfOlder = null}) async {
-    if (!force && _user != null && _user!.userID == _userID) {
+    if (forceIfOlder != null && _user != null && _user!.$2.difference(DateTime.now()) > forceIfOlder) {
-      return _user!;
+      force = true;
+    }
+
+    if (!force && _user != null && _user!.$1.userID == _userID) {
+      return _user!.$1;
     }
 
     if (_userID == null || _tokenAdmin == null) {
@@ -117,20 +175,24 @@ class AppAuth extends ChangeNotifier implements TokenSource {
 
     final user = await APIClient.getUser(this, _userID!);
 
-    _user = user;
+    _user = (user, DateTime.now());
 
     await save();
 
     return user;
   }
 
+  User? getUserOrNull() {
+    return _user?.$1;
+  }
+
   Future<Client?> loadClient({bool force = false, Duration? forceIfOlder = null}) async {
-    if (forceIfOlder != null && _clientQueryTime != null && _clientQueryTime!.difference(DateTime.now()) > forceIfOlder) {
+    if (forceIfOlder != null && _client != null && _client!.$2.difference(DateTime.now()) > forceIfOlder) {
       force = true;
     }
 
-    if (!force && _client != null && _client!.clientID == _clientID) {
+    if (!force && _client != null && _client!.$1.clientID == _clientID) {
-      return _client!;
+      return _client!.$1;
     }
 
     if (_clientID == null || _tokenAdmin == null) {
@@ -140,7 +202,7 @@ class AppAuth extends ChangeNotifier implements TokenSource {
     try {
       final client = await APIClient.getClient(this, _clientID!);
 
-      _client = client;
+      _client = (client, DateTime.now());
 
       await save();
 
@@ -154,6 +216,10 @@ class AppAuth extends ChangeNotifier implements TokenSource {
     }
   }
 
+  Client? getClientOrNull() {
+    return _client?.$1;
+  }
+
   @override
   String getToken() {
     return _tokenAdmin!;

flutter/lib/state/app_bar_state.dart

@@ -12,9 +12,18 @@ class AppBarState extends ChangeNotifier {
   bool _loadingIndeterminate = false;
   bool get loadingIndeterminate => _loadingIndeterminate;
 
+  bool _showSearchField = false;
+  bool get showSearchField => _showSearchField;
+
   void setLoadingIndeterminate(bool v) {
     if (_loadingIndeterminate == v) return;
     _loadingIndeterminate = v;
     notifyListeners();
   }
+
+  void setShowSearchField(bool v) {
+    if (_showSearchField == v) return;
+    _showSearchField = v;
+    notifyListeners();
+  }
 }

flutter/lib/state/app_events.dart

@@ -0,0 +1,47 @@
+import 'package:simplecloudnotifier/models/scn_message.dart';
+import 'package:simplecloudnotifier/state/application_log.dart';
+
+class AppEvents {
+  static AppEvents? _singleton = AppEvents._internal();
+
+  factory AppEvents() {
+    return _singleton ?? (_singleton = AppEvents._internal());
+  }
+
+  AppEvents._internal() {}
+
+  List<void Function(String)> _searchListeners = [];
+  List<void Function(SCNMessage)> _messageReceivedListeners = [];
+
+  void subscribeSearchListener(void Function(String) listener) {
+    _searchListeners.add(listener);
+  }
+
+  void unsubscribeSearchListener(void Function(String) listener) {
+    _searchListeners.remove(listener);
+  }
+
+  void notifySearchListeners(String query) {
+    ApplicationLog.debug('[AppEvents] onSearch: $query');
+
+    for (var listener in _searchListeners) {
+      listener(query);
+    }
+  }
+
+  void subscribeMessageReceivedListener(void Function(SCNMessage) listener) {
+    _messageReceivedListeners.add(listener);
+  }
+
+  void unsubscribeMessageReceivedListener(void Function(SCNMessage) listener) {
+    _messageReceivedListeners.remove(listener);
+  }
+
+  void notifyMessageReceivedListeners(SCNMessage msg) {
+    ApplicationLog.debug('[AppEvents] onMessageReceived: ${msg.messageID}');
+
+    for (var listener in _messageReceivedListeners) {
+      listener(msg);
+    }
+  }
+}

flutter/lib/state/application_log.dart

@@ -10,6 +10,7 @@ class ApplicationLog {
   static void debug(String message, {String? additional, StackTrace? trace}) {
     (additional != null && additional != '') ? print('[DEBUG] ${message}: ${additional}') : print('[DEBUG] ${message}');
 
+    if (!Hive.isBoxOpen('scn-logs')) return;
     Hive.box<SCNLog>('scn-logs').add(SCNLog(
       id: Xid().toString(),
       timestamp: DateTime.now(),
@@ -23,6 +24,7 @@ class ApplicationLog {
   static void info(String message, {String? additional, StackTrace? trace}) {
     (additional != null && additional != '') ? print('[INFO] ${message}: ${additional}') : print('[INFO] ${message}');
 
+    if (!Hive.isBoxOpen('scn-logs')) return;
     Hive.box<SCNLog>('scn-logs').add(SCNLog(
       id: Xid().toString(),
       timestamp: DateTime.now(),
@@ -36,6 +38,7 @@ class ApplicationLog {
   static void warn(String message, {String? additional, StackTrace? trace}) {
     (additional != null && additional != '') ? print('[WARN] ${message}: ${additional}') : print('[WARN] ${message}');
 
+    if (!Hive.isBoxOpen('scn-logs')) return;
     Hive.box<SCNLog>('scn-logs').add(SCNLog(
       id: Xid().toString(),
       timestamp: DateTime.now(),
@@ -49,6 +52,7 @@ class ApplicationLog {
   static void error(String message, {String? additional, StackTrace? trace}) {
     (additional != null && additional != '') ? print('[ERROR] ${message}: ${additional}') : print('[ERROR] ${message}');
 
+    if (!Hive.isBoxOpen('scn-logs')) return;
     Hive.box<SCNLog>('scn-logs').add(SCNLog(
       id: Xid().toString(),
       timestamp: DateTime.now(),
@@ -62,6 +66,7 @@ class ApplicationLog {
   static void fatal(String message, {String? additional, StackTrace? trace}) {
     (additional != null && additional != '') ? print('[FATAL] ${message}: ${additional}') : print('[FATAL] ${message}');
 
+    if (!Hive.isBoxOpen('scn-logs')) return;
     Hive.box<SCNLog>('scn-logs').add(SCNLog(
       id: Xid().toString(),
       timestamp: DateTime.now(),

flutter/lib/state/fb_message.dart

@@ -32,8 +32,6 @@ class FBMessage extends HiveObject implements FieldDebuggable {
   final String? messageType;
   @HiveField(8)
   final bool mutableContent;
-  @HiveField(9)
-  final RemoteNotification? notification;
   @HiveField(10)
   final DateTime? sentTime;
   @HiveField(11)
@@ -54,7 +52,7 @@ class FBMessage extends HiveObject implements FieldDebuggable {
   @HiveField(25)
   final String? notificationAndroidLink;
   @HiveField(26)
-  final AndroidNotificationPriority? notificationAndroidPriority;
+  final String? notificationAndroidPriority;
   @HiveField(27)
   final String? notificationAndroidSmallIcon;
   @HiveField(28)
@@ -62,14 +60,14 @@ class FBMessage extends HiveObject implements FieldDebuggable {
   @HiveField(29)
   final String? notificationAndroidTicker;
   @HiveField(30)
-  final AndroidNotificationVisibility? notificationAndroidVisibility;
+  final String? notificationAndroidVisibility;
   @HiveField(31)
   final String? notificationAndroidTag;
 
   @HiveField(40)
   final String? notificationAppleBadge;
   @HiveField(41)
-  final AppleNotificationSound? notificationAppleSound;
+  final String? notificationAppleSound;
   @HiveField(42)
   final String? notificationAppleImageUrl;
   @HiveField(43)
@@ -109,7 +107,6 @@ class FBMessage extends HiveObject implements FieldDebuggable {
     required this.messageId,
     required this.messageType,
     required this.mutableContent,
-    required this.notification,
     required this.sentTime,
     required this.threadId,
     required this.ttl,
@@ -152,7 +149,6 @@ class FBMessage extends HiveObject implements FieldDebuggable {
         this.messageId = rmsg.messageId,
         this.messageType = rmsg.messageType,
         this.mutableContent = rmsg.mutableContent,
-        this.notification = rmsg.notification,
         this.sentTime = rmsg.sentTime,
         this.threadId = rmsg.threadId,
         this.ttl = rmsg.ttl,
@@ -162,14 +158,14 @@ class FBMessage extends HiveObject implements FieldDebuggable {
         this.notificationAndroidCount = rmsg.notification?.android?.count,
         this.notificationAndroidImageUrl = rmsg.notification?.android?.imageUrl,
         this.notificationAndroidLink = rmsg.notification?.android?.link,
-        this.notificationAndroidPriority = rmsg.notification?.android?.priority,
+        this.notificationAndroidPriority = rmsg.notification?.android?.priority.toString(),
         this.notificationAndroidSmallIcon = rmsg.notification?.android?.smallIcon,
         this.notificationAndroidSound = rmsg.notification?.android?.sound,
         this.notificationAndroidTicker = rmsg.notification?.android?.ticker,
-        this.notificationAndroidVisibility = rmsg.notification?.android?.visibility,
+        this.notificationAndroidVisibility = rmsg.notification?.android?.visibility.toString(),
         this.notificationAndroidTag = rmsg.notification?.android?.tag,
         this.notificationAppleBadge = rmsg.notification?.apple?.badge,
-        this.notificationAppleSound = rmsg.notification?.apple?.sound,
+        this.notificationAppleSound = rmsg.notification?.apple?.sound?.toString(),
         this.notificationAppleImageUrl = rmsg.notification?.apple?.imageUrl,
         this.notificationAppleSubtitle = rmsg.notification?.apple?.subtitle,
         this.notificationAppleSubtitleLocArgs = rmsg.notification?.apple?.subtitleLocArgs,
@@ -195,12 +191,11 @@ class FBMessage extends HiveObject implements FieldDebuggable {
       ('category', this.category ?? ''),
       ('collapseKey', this.collapseKey ?? ''),
       ('contentAvailable', this.contentAvailable.toString()),
-      ('data', this.data.toString()),
+      ('data', this.data.entries.map((e) => '${e.key} := ${e.value}').join('\n')),
       ('from', this.from ?? ''),
       ('messageId', this.messageId ?? ''),
       ('messageType', this.messageType ?? ''),
       ('mutableContent', this.mutableContent.toString()),
-      ('notification', this.notification?.toString() ?? ''),
       ('sentTime', this.sentTime?.toString() ?? ''),
       ('threadId', this.threadId ?? ''),
       ('ttl', this.ttl?.toString() ?? ''),

flutter/lib/state/fb_message.g.dart

@@ -26,7 +26,6 @@ class FBMessageAdapter extends TypeAdapter<FBMessage> {
       messageId: fields[6] as String?,
       messageType: fields[7] as String?,
       mutableContent: fields[8] as bool,
-      notification: fields[9] as RemoteNotification?,
       sentTime: fields[10] as DateTime?,
       threadId: fields[11] as String?,
       ttl: fields[12] as int?,
@@ -36,15 +35,14 @@ class FBMessageAdapter extends TypeAdapter<FBMessage> {
       notificationAndroidCount: fields[23] as int?,
       notificationAndroidImageUrl: fields[24] as String?,
       notificationAndroidLink: fields[25] as String?,
-      notificationAndroidPriority: fields[26] as AndroidNotificationPriority?,
+      notificationAndroidPriority: fields[26] as String?,
       notificationAndroidSmallIcon: fields[27] as String?,
       notificationAndroidSound: fields[28] as String?,
       notificationAndroidTicker: fields[29] as String?,
-      notificationAndroidVisibility:
+      notificationAndroidVisibility: fields[30] as String?,
-          fields[30] as AndroidNotificationVisibility?,
       notificationAndroidTag: fields[31] as String?,
       notificationAppleBadge: fields[40] as String?,
-      notificationAppleSound: fields[41] as AppleNotificationSound?,
+      notificationAppleSound: fields[41] as String?,
       notificationAppleImageUrl: fields[42] as String?,
       notificationAppleSubtitle: fields[43] as String?,
       notificationAppleSubtitleLocArgs: (fields[44] as List?)?.cast<String>(),
@@ -64,7 +62,7 @@ class FBMessageAdapter extends TypeAdapter<FBMessage> {
   @override
   void write(BinaryWriter writer, FBMessage obj) {
     writer
-      ..writeByte(40)
+      ..writeByte(39)
       ..writeByte(0)
       ..write(obj.senderId)
       ..writeByte(1)
@@ -83,8 +81,6 @@ class FBMessageAdapter extends TypeAdapter<FBMessage> {
       ..write(obj.messageType)
       ..writeByte(8)
       ..write(obj.mutableContent)
-      ..writeByte(9)
-      ..write(obj.notification)
       ..writeByte(10)
       ..write(obj.sentTime)
       ..writeByte(11)

flutter/lib/state/globals.dart

@@ -13,6 +13,8 @@ class Globals {
 
   Globals._internal();
 
+  bool _initialized = false;
+
   String appName = '';
   String packageName = '';
   String version = '';
@@ -24,7 +26,11 @@ class Globals {
 
   late SharedPreferences sharedPrefs;
 
+  bool get isInitialized => _initialized;
+
   Future<void> init() async {
+    if (_initialized) return;
+
     PackageInfo packageInfo = await PackageInfo.fromPlatform();
 
     this.appName = packageInfo.appName;
@@ -54,6 +60,8 @@ class Globals {
     }
 
     this.sharedPrefs = await SharedPreferences.getInstance();
+
+    this._initialized = true;
   }
 
   String? getPrefFCMToken() {

flutter/lib/state/scn_data_cache.dart

@@ -0,0 +1,60 @@
+import 'package:hive_flutter/hive_flutter.dart';
+import 'package:simplecloudnotifier/models/channel.dart';
+import 'package:simplecloudnotifier/models/scn_message.dart';
+import 'package:simplecloudnotifier/settings/app_settings.dart';
+
+class SCNDataCache {
+  SCNDataCache._internal();
+  static final SCNDataCache _instance = SCNDataCache._internal();
+  factory SCNDataCache() => _instance;
+
+  Future<void> addToMessageCache(List<SCNMessage> newItems) async {
+    final cfg = AppSettings();
+
+    final cache = Hive.box<SCNMessage>('scn-message-cache');
+
+    for (var msg in newItems) await cache.put(msg.messageID, msg);
+
+    // delete all but the newest 128 messages
+
+    if (cache.length < cfg.messagePageSize) return;
+
+    final allValues = cache.values.toList();
+
+    allValues.sort((a, b) => -1 * a.timestamp.compareTo(b.timestamp));
+
+    for (var val in allValues.sublist(cfg.messagePageSize)) {
+      await cache.delete(val.messageID);
+    }
+  }
+
+  Future<void> setChannelCache(List<ChannelWithSubscription> channels) async {
+    final cache = Hive.box<Channel>('scn-channel-cache');
+
+    if (cache.length != channels.length) await cache.clear();
+
+    for (var chn in channels) await cache.put(chn.channel.channelID, chn.channel);
+  }
+
+  bool hasMessagesAndChannels() {
+    final chnCache = Hive.box<Channel>('scn-channel-cache');
+    final msgCache = Hive.box<SCNMessage>('scn-message-cache');
+
+    return chnCache.isNotEmpty && msgCache.isNotEmpty;
+  }
+
+  Map<String, Channel> getChannelMap() {
+    final chnCache = Hive.box<Channel>('scn-channel-cache');
+
+    return <String, Channel>{for (var v in chnCache.values) v.channelID: v};
+  }
+
+  List<SCNMessage> getMessagesSorted() {
+    final msgCache = Hive.box<SCNMessage>('scn-message-cache');
+
+    final cacheMessages = msgCache.values.toList();
+    cacheMessages.sort((a, b) => -1 * a.timestamp.compareTo(b.timestamp));
+
+    return cacheMessages;
+  }
+}

flutter/lib/utils/navi.dart

@@ -8,15 +8,21 @@ class Navi {
 
   static void push<T extends Widget>(BuildContext context, T Function() builder) {
     Provider.of<AppBarState>(context, listen: false).setLoadingIndeterminate(false);
+    Provider.of<AppBarState>(context, listen: false).setShowSearchField(false);
 
     Navigator.push(context, MaterialPageRoute<T>(builder: (context) => builder()));
   }
 
   static void popToRoot(BuildContext context) {
     Provider.of<AppBarState>(context, listen: false).setLoadingIndeterminate(false);
+    Provider.of<AppBarState>(context, listen: false).setShowSearchField(false);
 
     Navigator.popUntil(context, (route) => route.isFirst);
   }
+
+  static void popDialog(BuildContext dialogContext) {
+    Navigator.pop(dialogContext);
+  }
 }
 
 class SCNRouteObserver extends RouteObserver<PageRoute<dynamic>> {
@@ -25,6 +31,7 @@ class SCNRouteObserver extends RouteObserver<PageRoute<dynamic>> {
     super.didPush(route, previousRoute);
     if (route is PageRoute) {
       AppBarState().setLoadingIndeterminate(false);
+      AppBarState().setShowSearchField(false);
 
       print('[SCNRouteObserver] .didPush()');
     }
@@ -35,6 +42,7 @@ class SCNRouteObserver extends RouteObserver<PageRoute<dynamic>> {
     super.didReplace(newRoute: newRoute, oldRoute: oldRoute);
     if (newRoute is PageRoute) {
       AppBarState().setLoadingIndeterminate(false);
+      AppBarState().setShowSearchField(false);
 
       print('[SCNRouteObserver] .didReplace()');
     }
@@ -45,6 +53,7 @@ class SCNRouteObserver extends RouteObserver<PageRoute<dynamic>> {
     super.didPop(route, previousRoute);
     if (previousRoute is PageRoute && route is PageRoute) {
       AppBarState().setLoadingIndeterminate(false);
+      AppBarState().setShowSearchField(false);
 
       print('[SCNRouteObserver] .didPop()');
     }

flutter/lib/utils/notifier.dart

@@ -0,0 +1,83 @@
+import 'dart:io';
+
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:simplecloudnotifier/settings/app_settings.dart';
+import 'package:simplecloudnotifier/state/application_log.dart';
+import 'package:simplecloudnotifier/state/globals.dart';
+
+class Notifier {
+  static void showLocalNotification(String messageID, String channelID, String channelName, String channelDescr, String title, String body, DateTime? timestamp) async {
+    final nid = Globals().sharedPrefs.getInt('notifier.nextid') ?? 1000;
+    Globals().sharedPrefs.setInt('notifier.nextid', nid + 7);
+
+    final existingSummaryNID = Globals().sharedPrefs.getInt('notifier.summary.$channelID');
+
+    final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
+
+    if (Platform.isAndroid && AppSettings().groupNotifications) {
+      final activeNotifications = (await flutterLocalNotificationsPlugin.getActiveNotifications()).where((p) => p.groupKey == channelID).toList();
+      final summaryNotification = activeNotifications.where((p) => p.id == existingSummaryNID).toList();
+
+      ApplicationLog.debug('found ${activeNotifications.length} active notifications in this group (${summaryNotification.length} summary notifications for channel ${channelID} with nid [${existingSummaryNID}])');
+
+      if (activeNotifications.isNotEmpty && !activeNotifications.any((p) => p.id == existingSummaryNID)) {
+        // ======== SHOW SUMMARY/GROUPING NOTIFICATION ========
+        final newSummaryNID = nid + 1;
+        ApplicationLog.debug('Create new summary notifications for channel ${channelID} with nid [${newSummaryNID}])');
+        Globals().sharedPrefs.setInt('notifier.summary.$channelID', newSummaryNID);
+
+        var payload = '';
+        if (messageID != '') {
+          payload = ['@SCN_MESSAGE_SUMMARY', channelID, newSummaryNID].join("\n");
+        }
+
+        await flutterLocalNotificationsPlugin.show(
+          newSummaryNID,
+          channelName,
+          "(multiple notifications)",
+          NotificationDetails(
+            android: AndroidNotificationDetails(
+              channelID,
+              channelName,
+              importance: Importance.max,
+              priority: Priority.high,
+              groupKey: channelID,
+              setAsGroupSummary: true,
+              subText: (channelName == 'main') ? null : channelName,
+            ),
+          ),
+          payload: payload,
+        );
+      }
+    }
+
+    final newMessageNID = nid + 2;
+
+    ApplicationLog.debug('Create new local notifications for message in channel ${channelID} with nid [${newMessageNID}])');
+
+    var payload = '';
+    if (messageID != '') {
+      payload = ['@SCN_MESSAGE', messageID, channelID, newMessageNID].join("\n");
+    }
+
+    // ======== SHOW NOTIFICATION ========
+    await flutterLocalNotificationsPlugin.show(
+      newMessageNID,
+      title,
+      body,
+      NotificationDetails(
+        android: AndroidNotificationDetails(
+          channelID,
+          channelName,
+          channelDescription: channelDescr,
+          importance: Importance.max,
+          priority: Priority.high,
+          when: timestamp?.millisecondsSinceEpoch,
+          groupKey: channelID,
+          subText: (channelName == 'main') ? null : channelName,
+        ),
+      ),
+      payload: payload,
+    );
+  }
+}

flutter/lib/utils/ui.dart

@@ -106,4 +106,49 @@ class UI {
       child: child,
     );
   }
+
+  static Widget metaCard({required BuildContext context, required IconData icon, required String title, required List<String> values, void Function()? mainAction, List<(IconData, void Function())>? iconActions}) {
+    final container = UI.box(
+      context: context,
+      padding: EdgeInsets.fromLTRB(16, 2, 4, 2),
+      child: Row(
+        children: [
+          FaIcon(icon, size: 18),
+          SizedBox(width: 16),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(title, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+                for (final val in values) Text(val, style: const TextStyle(fontSize: 14)),
+              ],
+            ),
+          ),
+          if (iconActions != null) ...[
+            SizedBox(width: 12),
+            for (final iconAction in iconActions) ...[
+              SizedBox(width: 4),
+              IconButton(icon: FaIcon(iconAction.$1), onPressed: iconAction.$2),
+            ],
+          ],
+        ],
+      ),
+    );
+
+    if (mainAction == null) {
+      return Padding(
+        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
+        child: container,
+      );
+    } else {
+      return Padding(
+        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 0),
+        child: InkWell(
+          splashColor: Theme.of(context).splashColor,
+          onTap: mainAction,
+          child: container,
+        ),
+      );
+    }
+  }
 }

flutter/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -8,6 +8,7 @@ import Foundation
 import device_info_plus
 import firebase_core
 import firebase_messaging
+import flutter_local_notifications
 import package_info_plus
 import path_provider_foundation
 import share_plus
@@ -18,6 +19,7 @@ func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   DeviceInfoPlusMacosPlugin.register(with: registry.registrar(forPlugin: "DeviceInfoPlusMacosPlugin"))
   FLTFirebaseCorePlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseCorePlugin"))
   FLTFirebaseMessagingPlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseMessagingPlugin"))
+  FlutterLocalNotificationsPlugin.register(with: registry.registrar(forPlugin: "FlutterLocalNotificationsPlugin"))
   FPPPackageInfoPlusPlugin.register(with: registry.registrar(forPlugin: "FPPPackageInfoPlusPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   SharePlusMacosPlugin.register(with: registry.registrar(forPlugin: "SharePlusMacosPlugin"))

flutter/pubspec.lock

@@ -209,6 +209,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.6"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      sha256: "365c771ac3b0e58845f39ec6deebc76e3276aa9922b0cc60840712094d9047ac"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.10"
   device_info_plus:
     dependency: "direct main"
     description:
@@ -342,6 +350,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.0.0"
+  flutter_local_notifications:
+    dependency: "direct main"
+    description:
+      name: flutter_local_notifications
+      sha256: "40e6fbd2da7dcc7ed78432c5cdab1559674b4af035fddbfb2f9a8f9c2112fcef"
+      url: "https://pub.dev"
+    source: hosted
+    version: "17.1.2"
+  flutter_local_notifications_linux:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_linux
+      sha256: "33f741ef47b5f63cc7f78fe75eeeac7e19f171ff3c3df054d84c1e38bedb6a03"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0+1"
+  flutter_local_notifications_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_platform_interface
+      sha256: "340abf67df238f7f0ef58f4a26d2a83e1ab74c77ab03cd2b2d5018ac64db30b7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.1.0"
   flutter_staggered_grid_view:
     dependency: transitive
     description:
@@ -916,6 +948,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.6.1"
+  timezone:
+    dependency: transitive
+    description:
+      name: timezone
+      sha256: a6ccda4a69a442098b602c44e61a1e2b4bf6f5516e875bbf0f427d5df14745d5
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3"
   timing:
     dependency: transitive
     description:

flutter/pubspec.yaml

@@ -33,6 +33,7 @@ dependencies:
   toastification: ^2.0.0
   uuid: ^4.4.0
   share_plus: ^9.0.0
+  flutter_local_notifications: ^17.1.2
 
 
 dependency_overrides: