🐛 Bug fixes and optimization

lib/models/notification.dart

@@ -28,9 +28,9 @@ class Notification {
   });
 
   factory Notification.fromJson(Map<String, dynamic> json) => Notification(
-        id: json['id'],
-        createdAt: DateTime.parse(json['created_at']),
-        updatedAt: DateTime.parse(json['updated_at']),
+        id: json['id'] ?? 0,
+        createdAt: json['created_at'] == null ? DateTime.now() : DateTime.parse(json['created_at']),
+        updatedAt: json['updated_at'] == null ? DateTime.now() : DateTime.parse(json['updated_at']),
         deletedAt: json['deleted_at'],
         subject: json['subject'],
         content: json['content'],

lib/providers/chat.dart

@@ -33,7 +33,11 @@ class ChatProvider extends ChangeNotifier {
 
   IOWebSocketChannel? _channel;
 
-  Future<IOWebSocketChannel?> connect(AuthProvider auth, {noRetry = false}) async {
+  Future<IOWebSocketChannel?> connect(
+    AuthProvider auth, {
+    Function(bool status)? onStateUpdated,
+    noRetry = false,
+  }) async {
     if (auth.client == null) await auth.loadClient();
     if (!await auth.isAuthorized()) return null;
 
@@ -52,7 +56,9 @@ class ChatProvider extends ChangeNotifier {
 
     try {
       _channel = IOWebSocketChannel.connect(uri);
+      if (onStateUpdated != null) onStateUpdated(true);
       await _channel!.ready;
+      if (onStateUpdated != null) onStateUpdated(false);
     } catch (e) {
       if (!noRetry) {
         await auth.client!.refreshToken(auth.client!.currentRefreshToken!);

lib/providers/keypair.dart

@@ -43,6 +43,7 @@ class KeypairProvider extends ChangeNotifier {
   }
 
   void receiveKeypair(Keypair kp) {
+    print('received ${kp.id}');
     keys[kp.id] = kp;
     requestingKeys.remove(kp.id);
     notifyListeners();
@@ -94,6 +95,11 @@ class KeypairProvider extends ChangeNotifier {
     ));
 
     requestingKeys.add(id);
+    Future.delayed(const Duration(seconds: 3), () {
+      requestingKeys.remove(id);
+      notifyListeners();
+    });
+
     notifyListeners();
   }
 

lib/providers/notify.dart

@@ -66,9 +66,11 @@ class NotifyProvider extends ChangeNotifier {
 
   IOWebSocketChannel? _channel;
 
-  Future<IOWebSocketChannel?> connect(AuthProvider auth, {
+  Future<IOWebSocketChannel?> connect(
+    AuthProvider auth, {
     Keypair? Function(String id)? onKexRequest,
     Function(Keypair kp)? onKexProvide,
+    Function(bool status)? onStateUpdated,
     bool noRetry = false,
   }) async {
     if (auth.client == null) await auth.loadClient();
@@ -88,7 +90,9 @@ class NotifyProvider extends ChangeNotifier {
 
     try {
       _channel = IOWebSocketChannel.connect(uri);
+      if (onStateUpdated != null) onStateUpdated(true);
       await _channel!.ready;
+      if (onStateUpdated != null) onStateUpdated(false);
     } catch (e) {
       if (!noRetry) {
         await auth.client!.refreshToken(auth.client!.currentRefreshToken!);
@@ -99,15 +103,16 @@ class NotifyProvider extends ChangeNotifier {
     }
 
     _channel!.stream.listen(
-          (event) {
+      (event) {
         final result = NetworkPackage.fromJson(jsonDecode(event));
         switch (result.method) {
           case 'notifications.new':
-            final result = model.Notification.fromJson(jsonDecode(event));
+            if (result.payload == null) break;
+            final notification = model.Notification.fromJson(result.payload!);
             unreadAmount++;
-            notifications.add(result);
+            notifications.add(notification);
             notifyListeners();
-            notifyMessage(result.subject, result.content);
+            notifyMessage(notification.subject, notification.content);
             break;
           case 'kex.request':
             if (onKexRequest == null || result.payload == null) break;

lib/widgets/provider_init.dart

@@ -19,6 +19,21 @@ class ProviderInitializer extends StatefulWidget {
 }
 
 class _ProviderInitializerState extends State<ProviderInitializer> {
+  void showConnectionStatus(bool status) {
+    if (status) {
+      showConnectionSnackbar();
+    } else {
+      ScaffoldMessenger.of(context).clearSnackBars();
+    }
+  }
+
+  void showConnectionSnackbar() {
+    ScaffoldMessenger.of(context).showSnackBar(SnackBar(
+      content: Text(AppLocalizations.of(context)!.connectingServer),
+      duration: const Duration(minutes: 1),
+    ));
+  }
+
   void connect() async {
     final auth = context.read<AuthProvider>();
     final nty = context.read<NotifyProvider>();
@@ -28,7 +43,7 @@ class _ProviderInitializerState extends State<ProviderInitializer> {
     final notify = ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(
         content: Text(AppLocalizations.of(context)!.connectingServer),
-        duration: const Duration(minutes: 1),
+        duration: const Duration(seconds: 3),
       ),
     );
 
@@ -38,17 +53,21 @@ class _ProviderInitializerState extends State<ProviderInitializer> {
           await auth.loadClient();
         }
 
-        nty.fetch(auth);
-        chat.connect(auth);
-        keypair.channel = await nty.connect(
+        nty.connect(
           auth,
           onKexRequest: keypair.provideKeypair,
           onKexProvide: keypair.receiveKeypair,
-        );
+            onStateUpdated: showConnectionStatus
+        ).then((value) {
+          keypair.channel = value;
+        });
+        chat.connect(auth, onStateUpdated: showConnectionStatus);
+
+        nty.fetch(auth);
 
         Timer.periodic(const Duration(seconds: 1), (timer) {
-          nty.connect(auth);
-          chat.connect(auth);
+          nty.connect(auth, onStateUpdated: showConnectionStatus);
+          chat.connect(auth, onStateUpdated: showConnectionStatus);
         });
       }
     } catch (e) {