fix #200

lib/app.dart

@@ -3,6 +3,7 @@ import 'package:twonly/globals.dart';
 import 'package:twonly/src/localization/generated/app_localizations.dart';
 import 'package:twonly/src/providers/connection.provider.dart';
 import 'package:twonly/src/providers/settings.provider.dart';
+import 'package:twonly/src/services/api/media_send.dart';
 import 'package:twonly/src/services/notification.service.dart';
 import 'package:twonly/src/utils/storage.dart';
 import 'package:twonly/src/views/onboarding.view.dart';
@@ -71,7 +72,9 @@ class _AppState extends State<App> with WidgetsBindingObserver {
 
   Future initAsync() async {
     setUserPlan();
-    apiService.connect();
+    await apiService.connect();
+    // call this function so invalid media files are get purged
+    retryMediaUpload(true);
   }
 
   @override

lib/main.dart

@@ -42,6 +42,7 @@ void main() async {
   apiService = ApiService();
   twonlyDB = TwonlyDatabase();
   await twonlyDB.messagesDao.resetPendingDownloadState();
+  await twonlyDB.messagesDao.handleMediaFilesOlderThan7Days();
 
   // purge media files in the background
   purgeReceivedMediaFiles();

lib/src/database/daos/messages_dao.dart

@@ -69,6 +69,22 @@ class MessagesDao extends DatabaseAccessor<TwonlyDatabase>
         .write(MessagesCompanion(contentJson: Value(null)));
   }
 
+  Future handleMediaFilesOlderThan7Days() {
+    /// media files will be deleted by the server after 7 days, so delete them here also
+    return (update(messages)
+          ..where(
+            (t) => (t.kind.equals(MessageKind.media.name) &
+                t.openedAt.isNull() &
+                t.messageOtherId.isNull() &
+                (t.sendAt.isSmallerThanValue(
+                  DateTime.now().subtract(
+                    Duration(days: 8),
+                  ),
+                ))),
+          ))
+        .write(MessagesCompanion(errorWhileSending: Value(true)));
+  }
+
   Future<List<Message>> getAllMessagesPendingDownloading() {
     return (select(messages)
           ..where(

lib/src/database/tables/messages_table.dart

@@ -13,7 +13,8 @@ enum MessageKind {
   flameSync,
   opened,
   ack,
-  pushKey
+  pushKey,
+  receiveMediaError,
 }
 
 enum DownloadState {

lib/src/localization/app_de.arb

@@ -228,7 +228,7 @@
     "checkoutOptions": "Optionen",
     "checkoutPayYearly": "Jährlich bezahlen",
     "checkoutTotal": "Gesamt",
-    "selectPaymentMethode": "Zahlungsmethode auswählen",
+    "selectPaymentMethod": "Zahlungsmethode auswählen",
     "twonlyCredit": "twonly-Guthaben",
     "notEnoughCredit": "Du hast nicht genügend Guthaben!",
     "chargeCredit": "Guthaben aufladen",

lib/src/localization/app_en.arb

@@ -386,7 +386,7 @@
   "refund": "Refund",
   "checkoutPayYearly": "Pay yearly",
   "checkoutTotal": "Total",
-  "selectPaymentMethode": "Select Payment Method",
+  "selectPaymentMethod": "Select Payment Method",
   "twonlyCredit": "twonly-Credit",
   "notEnoughCredit": "You do not have enough credit!",
   "chargeCredit": "Charge credit",

lib/src/localization/generated/app_localizations.dart

@@ -1382,11 +1382,11 @@ abstract class AppLocalizations {
   /// **'Total'**
   String get checkoutTotal;
 
-  /// No description provided for @selectPaymentMethode.
+  /// No description provided for @selectPaymentMethod.
   ///
   /// In en, this message translates to:
   /// **'Select Payment Method'**
-  String get selectPaymentMethode;
+  String get selectPaymentMethod;
 
   /// No description provided for @twonlyCredit.
   ///

lib/src/localization/generated/app_localizations_de.dart

@@ -725,7 +725,7 @@ class AppLocalizationsDe extends AppLocalizations {
   String get checkoutTotal => 'Gesamt';
 
   @override
-  String get selectPaymentMethode => 'Zahlungsmethode auswählen';
+  String get selectPaymentMethod => 'Zahlungsmethode auswählen';
 
   @override
   String get twonlyCredit => 'twonly-Guthaben';

lib/src/localization/generated/app_localizations_en.dart

@@ -720,7 +720,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get checkoutTotal => 'Total';
 
   @override
-  String get selectPaymentMethode => 'Select Payment Method';
+  String get selectPaymentMethod => 'Select Payment Method';
 
   @override
   String get twonlyCredit => 'twonly-Credit';

lib/src/model/json/message.dart

@@ -39,11 +39,12 @@ class MessageJson {
   final int? messageId;
   DateTime timestamp;
 
-  MessageJson(
+  MessageJson({
-      {required this.kind,
+    required this.kind,
     this.messageId,
     required this.content,
-      required this.timestamp});
+    required this.timestamp,
+  });
 
   @override
   String toString() {

lib/src/services/api.service.dart

@@ -51,7 +51,7 @@ class ApiService {
 
   // reconnection params
   Timer? reconnectionTimer;
-  // int _reconnectionDelay = 5;
+  int _reconnectionDelay = 5;
 
   final HashMap<Int64, server.ServerToClient?> messagesV0 = HashMap();
   IOWebSocketChannel? _channel;
@@ -81,7 +81,7 @@ class ApiService {
     if (!globalIsAppInBackground) {
       retransmitRawBytes();
       tryTransmitMessages();
-      retryMediaUpload();
+      retryMediaUpload(false);
       tryDownloadAllMediaFiles();
       notifyContactsAboutProfileChange();
       twonlyDB.markUpdated();
@@ -92,6 +92,7 @@ class ApiService {
 
   Future onConnected() async {
     await authenticate();
+    _reconnectionDelay = 5;
     globalCallbackConnectionState(true);
   }
 
@@ -100,6 +101,12 @@ class ApiService {
     isAuthenticated = false;
     globalCallbackConnectionState(false);
     await twonlyDB.messagesDao.resetPendingDownloadState();
+    reconnectionTimer ??= Timer(Duration(seconds: _reconnectionDelay), () {
+      Log.info("starting with reconnection.");
+      reconnectionTimer = null;
+      connect();
+    });
+    _reconnectionDelay += 5;
   }
 
   Future close(Function callback) async {
@@ -113,11 +120,13 @@ class ApiService {
     callback();
   }
 
-  Future<bool> connect() async {
+  Future<bool> connect({bool force = false}) async {
+    if (reconnectionTimer != null && !force) {
+      return false;
+    }
+    reconnectionTimer?.cancel();
     final user = await getUser();
     if (user != null && user.isDemoUser) {
-      print("DEMO user");
-      // the demo user should not be able to connect to the API server...
       globalCallbackConnectionState(true);
       return false;
     }
@@ -126,9 +135,7 @@ class ApiService {
         return true;
       }
       // ensure that the connect function is not called again by the timer.
-      if (reconnectionTimer != null) {
+      reconnectionTimer?.cancel();
-        reconnectionTimer!.cancel();
-      }
 
       isAuthenticated = false;
 

lib/src/services/api/media_received.dart

@@ -12,8 +12,7 @@ import 'package:http/http.dart' as http;
 // import 'package:twonly/src/providers/api/api_utils.dart';
 import 'package:twonly/src/services/api/media_send.dart';
 import 'package:cryptography_plus/cryptography_plus.dart';
-import 'package:twonly/src/model/protobuf/api/client_to_server.pb.dart'
+import 'package:twonly/src/services/api/utils.dart';
-    as client;
 import 'package:twonly/src/utils/log.dart';
 import 'package:twonly/src/utils/storage.dart';
 
@@ -75,7 +74,8 @@ Future<bool> isAllowedToDownload(bool isVideo) async {
   return false;
 }
 
-Future startDownloadMedia(Message message, bool force) async {
+Future startDownloadMedia(Message message, bool force,
+    {int retryCounter = 0}) async {
   if (message.contentJson == null) return;
   if (downloadStartedForMediaReceived[message.messageId] != null) {
     DateTime started = downloadStartedForMediaReceived[message.messageId]!;
@@ -151,12 +151,10 @@ Future startDownloadMedia(Message message, bool force) async {
     }, onDone: () async {
       if (r.statusCode != 200) {
         Log.error("Download error: $r");
-        await twonlyDB.messagesDao.updateMessageByMessageId(
+        if (r.statusCode == 418) {
-          message.messageId,
+          Log.error("Got custom error code: ${chunks.toList()}");
-          MessagesCompanion(
+          handleMediaError(message);
-            errorWhileSending: Value(true),
+        }
-          ),
-        );
         return;
       }
 
@@ -172,13 +170,18 @@ Future startDownloadMedia(Message message, bool force) async {
         offset += chunk.length;
       }
       await writeMediaFile(message.messageId, "encrypted", bytes);
-      handleEncryptedFile(message, encryptedBytesTmp: bytes);
+      handleEncryptedFile(message,
+          encryptedBytesTmp: bytes, retryCounter: retryCounter);
       return;
     });
   });
 }
 
-Future handleEncryptedFile(Message msg, {Uint8List? encryptedBytesTmp}) async {
+Future handleEncryptedFile(
+  Message msg, {
+  Uint8List? encryptedBytesTmp,
+  int retryCounter = 0,
+}) async {
   Uint8List? encryptedBytes =
       encryptedBytesTmp ?? await readMediaFile(msg.messageId, "encrypted");
 
@@ -211,16 +214,16 @@ Future handleEncryptedFile(Message msg, {Uint8List? encryptedBytesTmp}) async {
 
     await writeMediaFile(msg.messageId, "png", imageBytes);
   } catch (e) {
-    Log.error("Decryption error: $e");
+    if (retryCounter >= 1) {
-    await twonlyDB.messagesDao.updateMessageByMessageId(
+      Log.error(
-      msg.messageId,
+          "could not decrypt the media file in the second try. reporting error to user: $e");
-      MessagesCompanion(
+      handleMediaError(msg);
-        errorWhileSending: Value(true),
+      return;
-      ),
+    }
-    );
+    Log.error("could not decrypt the media file trying again: $e");
-    // answers with ok, so the server will delete the message
+    startDownloadMedia(msg, true, retryCounter: retryCounter + 1);
-    var ok = client.Response_Ok()..none = true;
+    // try downloading again....
-    return client.Response()..ok = ok;
+    return;
   }
 
   await twonlyDB.messagesDao.updateMessageByMessageId(

lib/src/services/api/media_send.dart

@@ -103,7 +103,7 @@ Future<bool> checkForFailedUploads() async {
 }
 
 final lockingHandleMediaFile = Mutex();
-Future retryMediaUpload({int maxRetries = 3}) async {
+Future retryMediaUpload(bool appRestarted, {int maxRetries = 3}) async {
   if (maxRetries == 0) {
     Log.error("retried media upload 3 times. abort retrying");
     return;
@@ -116,16 +116,23 @@ Future retryMediaUpload({int maxRetries = 3}) async {
     Log.info("re uploading ${mediaFiles.length} media files.");
     for (final mediaFile in mediaFiles) {
       if (mediaFile.messageIds == null || mediaFile.metadata == null) {
+        if (appRestarted) {
+          /// When the app got restarted and the messageIds or the metadata is not
+          /// set then the app was closed before the images was send.
+
           // the media upload was canceled,
           if (mediaFile.uploadTokens != null) {
             /// the file was already uploaded.
             /// notify the server to remove the upload
-          apiService.getDownloadTokens(mediaFile.uploadTokens!.uploadToken, 0);
+            apiService.getDownloadTokens(
+                mediaFile.uploadTokens!.uploadToken, 0);
           }
           await twonlyDB.mediaUploadsDao
               .deleteMediaUpload(mediaFile.mediaUploadId);
           Log.info(
-            "upload can be removed, the finalized function was never called...");
+            "upload can be removed, the finalized function was never called...",
+          );
+        }
         continue;
       }
 
@@ -138,7 +145,7 @@ Future retryMediaUpload({int maxRetries = 3}) async {
     return false;
   });
   if (retry) {
-    await retryMediaUpload(maxRetries: maxRetries - 1);
+    await retryMediaUpload(false, maxRetries: maxRetries - 1);
   }
 }
 

lib/src/services/api/messages.dart

@@ -112,6 +112,7 @@ Future<Map<String, dynamic>> getAllMessagesForRetransmitting() async {
 
 Future<Result> sendRetransmitMessage(
     String stateId, RetransmitMessage msg) async {
+  Log.info("Sending ${msg.messageId}");
   Result resp =
       await apiService.sendTextMessage(msg.userId, msg.bytes, msg.pushData);
 
@@ -130,8 +131,8 @@ Future<Result> sendRetransmitMessage(
   }
 
   if (resp.isSuccess) {
-    if (msg.messageId != null) {
     retry = false;
+    if (msg.messageId != null) {
       await twonlyDB.messagesDao.updateMessageByMessageId(
         msg.messageId!,
         MessagesCompanion(acknowledgeByServer: Value(true)),

lib/src/services/api/server_messages.dart

@@ -86,7 +86,19 @@ Future<client.Response> handleNewMessage(int fromUserId, Uint8List body) async {
         }
       }
 
+    case MessageKind.receiveMediaError:
+      if (message.messageId != null) {
+        await twonlyDB.messagesDao.updateMessageByOtherUser(
+          fromUserId,
+          message.messageId!,
+          MessagesCompanion(
+            errorWhileSending: Value(true),
+          ),
+        );
+      }
+
     case MessageKind.opened:
+      if (message.messageId != null) {
         final update = MessagesCompanion(openedAt: Value(message.timestamp));
         await twonlyDB.messagesDao.updateMessageByOtherUser(
           fromUserId,
@@ -102,7 +114,7 @@ Future<client.Response> handleNewMessage(int fromUserId, Uint8List body) async {
             fromUserId,
           );
         }
-
+      }
       break;
 
     case MessageKind.rejectRequest:

lib/src/services/api/utils.dart

@@ -1,6 +1,8 @@
+import 'package:drift/drift.dart';
 import 'package:fixnum/fixnum.dart';
 import 'package:twonly/globals.dart';
 import 'package:twonly/src/database/tables/messages_table.dart';
+import 'package:twonly/src/database/twonly_database.dart';
 import 'package:twonly/src/model/json/message.dart';
 import 'package:twonly/src/model/protobuf/api/client_to_server.pb.dart'
     as client;
@@ -66,3 +68,23 @@ Future rejectUser(int contactId) async {
     ),
   );
 }
+
+Future handleMediaError(Message message) async {
+  await twonlyDB.messagesDao.updateMessageByMessageId(
+    message.messageId,
+    MessagesCompanion(
+      errorWhileSending: Value(true),
+    ),
+  );
+  if (message.messageOtherId != null) {
+    encryptAndSendMessageAsync(
+      null,
+      message.contactId,
+      MessageJson(
+          kind: MessageKind.receiveMediaError,
+          timestamp: DateTime.now(),
+          content: MessageContent(),
+          messageId: message.messageOtherId),
+    );
+  }
+}

lib/src/utils/misc.dart

@@ -112,7 +112,7 @@ String formatDuration(int seconds) {
   }
 }
 
-InputDecoration getInputDecoration(context, hintText) {
+InputDecoration getInputDecoration(BuildContext context, String hintText) {
   final primaryColor =
       Theme.of(context).colorScheme.primary; // Get the primary color
   return InputDecoration(
@@ -279,7 +279,7 @@ Future insertDemoContacts() async {
       if (config['accepted'] ?? false) {
         for (var i = 0; i < 20; i++) {
           int chatId = Random().nextInt(chatMessages.length);
-          int? messageId = await twonlyDB.messagesDao.insertMessage(
+          await twonlyDB.messagesDao.insertMessage(
             MessagesCompanion(
               contactId: Value(userId),
               kind: Value(MessageKind.textMessage),

lib/src/utils/storage.dart

@@ -1,7 +1,10 @@
 import 'dart:convert';
+import 'package:flutter/material.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:provider/provider.dart';
 import 'package:twonly/src/model/json/userdata.dart';
+import 'package:twonly/src/providers/connection.provider.dart';
 import 'package:twonly/src/utils/log.dart';
 
 Future<bool> isUserCreated() async {
@@ -28,6 +31,17 @@ Future<UserData?> getUser() async {
   }
 }
 
+Future updateUsersPlan(BuildContext context, String planId) async {
+  context.read<CustomChangeProvider>().plan = planId;
+  var user = await getUser();
+  if (user != null) {
+    user.subscriptionPlan = planId;
+    await updateUser(user);
+  }
+  if (!context.mounted) return;
+  context.read<CustomChangeProvider>().updatePlan(planId);
+}
+
 Future updateUser(UserData userData) async {
   final storage = FlutterSecureStorage();
   storage.write(key: "userData", value: jsonEncode(userData));

lib/src/views/chats/chat_list.view.dart

@@ -173,7 +173,7 @@ class _ChatListViewState extends State<ChatListView> {
                 : RefreshIndicator(
                     onRefresh: () async {
                       await apiService.close(() {});
-                      await apiService.connect();
+                      await apiService.connect(force: true);
                       await Future.delayed(Duration(seconds: 1));
                     },
                     child: ListView.builder(

lib/src/views/chats/media_viewer.view.dart

@@ -8,6 +8,7 @@ import 'package:lottie/lottie.dart';
 import 'package:no_screenshot/no_screenshot.dart';
 import 'package:twonly/globals.dart';
 import 'package:twonly/src/database/daos/contacts_dao.dart';
+import 'package:twonly/src/services/api/utils.dart';
 import 'package:twonly/src/utils/log.dart';
 import 'package:twonly/src/views/camera/share_image_editor_view.dart';
 import 'package:twonly/src/views/components/animate_icon.dart';
@@ -252,13 +253,9 @@ class _MediaViewerViewState extends State<MediaViewerView> {
 
     if ((imageBytes == null && !content.isVideo) ||
         (content.isVideo && videoController == null)) {
+      Log.error("media files are not found...");
       // When the message should be downloaded but imageBytes are null then a error happened
-      await twonlyDB.messagesDao.updateMessageByMessageId(
+      await handleMediaError(current);
-        current.messageId,
-        MessagesCompanion(
-          errorWhileSending: Value(true),
-        ),
-      );
       return nextMediaOrExit();
     }
 

lib/src/views/home.view.dart

@@ -68,7 +68,7 @@ class HomeViewState extends State<HomeView> {
         offsetRatio = offsetFromOne.abs();
       });
     }
-    if (cameraController == null && !initCameraStarted) {
+    if (cameraController == null && !initCameraStarted && offsetRatio < 1) {
       initCameraStarted = true;
       selectCamera(selectedCameraDetails.cameraId, false, false);
     }

lib/src/views/settings/subscription/checkout.view.dart

@@ -135,7 +135,7 @@ class _CheckoutViewState extends State<CheckoutView> {
                       Navigator.pop(context);
                     }
                   },
-                  child: Text(context.lang.selectPaymentMethode)),
+                  child: Text(context.lang.selectPaymentMethod)),
             ),
             SizedBox(height: 20)
           ],

lib/src/views/settings/subscription/select_payment.view.dart

@@ -1,8 +1,6 @@
 import 'package:collection/collection.dart';
 import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
 import 'package:twonly/globals.dart';
-import 'package:twonly/src/providers/connection.provider.dart';
 import 'package:twonly/src/utils/misc.dart';
 import 'package:twonly/src/utils/storage.dart';
 import 'package:twonly/src/views/settings/subscription/subscription.view.dart';
@@ -82,7 +80,7 @@ class _SelectPaymentViewState extends State<SelectPaymentView> {
         (balanceInCents == null || balanceInCents! >= checkoutInCents));
     return Scaffold(
       appBar: AppBar(
-        title: Text(context.lang.selectPaymentMethode),
+        title: Text(context.lang.selectPaymentMethod),
       ),
       body: SafeArea(
         child: Column(
@@ -222,21 +220,12 @@ class _SelectPaymentViewState extends State<SelectPaymentView> {
                             widget.planId!, widget.payMonthly!, tryAutoRenewal);
                         if (!context.mounted) return;
                         if (res.isSuccess) {
-                          context.read<CustomChangeProvider>().plan =
+                          await updateUsersPlan(context, widget.planId!);
-                              widget.planId!;
-                          var user = await getUser();
-                          if (user != null) {
-                            user.subscriptionPlan = widget.planId!;
-                            await updateUser(user);
-                          }
                           if (!context.mounted) return;
-                          context
-                              .read<CustomChangeProvider>()
-                              .updatePlan(widget.planId!);
                           ScaffoldMessenger.of(context).showSnackBar(
                             SnackBar(
-                                content:
+                              content: Text(context.lang.planSuccessUpgraded),
-                                    Text(context.lang.planSuccessUpgraded)),
+                            ),
                           );
                           Navigator.of(context).pop(true);
                         } else {

lib/src/views/settings/subscription/subscription.view.dart

@@ -556,12 +556,12 @@ Future redeemUserInviteCode(BuildContext context, String newPlan) async {
               if (res.isSuccess) {
                 ScaffoldMessenger.of(context).showSnackBar(
                   SnackBar(
-                      content: Text(context.lang.redeemUserInviteCodeSuccess)),
+                    content: Text(context.lang.redeemUserInviteCodeSuccess),
+                  ),
                 );
                 // reconnect to load new plan.
-                apiService.close(() {
+                await apiService.close(() {});
-                  apiService.connect();
+                await apiService.connect();
-                });
               } else {
                 ScaffoldMessenger.of(context).showSnackBar(
                   SnackBar(content: Text(errorCodeToText(context, res.error))),