some performance improvements and fix #18

lib/src/app.dart

@@ -27,7 +27,7 @@ bool globalIsAppInBackground = true;
 
 // these two callbacks are called on updated to the corresponding database
 Function globalCallBackOnContactChange = () {};
-Future Function(int) globalCallBackOnMessageChange = (a) async {};
+Future Function(int, int?) globalCallBackOnMessageChange = (a, b) async {};
 Function(List<int>, bool) globalCallBackOnDownloadChange = (a, b) {};
 
 /// The Widget that configures your application.
@@ -67,8 +67,10 @@ class _MyAppState extends State<MyApp> with WidgetsBindingObserver {
       context.read<DownloadChangeProvider>().update(token, add);
     };
 
-    globalCallBackOnMessageChange = (userId) async {
+    globalCallBackOnMessageChange = (userId, messageId) async {
-      await context.read<MessagesChangeProvider>().updateLastMessageFor(userId);
+      await context
+          .read<MessagesChangeProvider>()
+          .updateLastMessageFor(userId, messageId);
     };
 
     WidgetsBinding.instance.addPostFrameCallback((_) {
@@ -194,7 +196,7 @@ class _MyAppState extends State<MyApp> with WidgetsBindingObserver {
     globalCallbackConnectionState = (a) {};
     globalCallBackOnDownloadChange = (a, b) {};
     globalCallBackOnContactChange = () {};
-    globalCallBackOnMessageChange = (a) async {};
+    globalCallBackOnMessageChange = (a, b) async {};
     super.dispose();
   }
 

lib/src/model/messages_model.dart

@@ -152,7 +152,7 @@ class DbMessages extends CvModelBase {
     );
     int? fromUserId = await getFromUserIdByMessageId(messageId);
     if (fromUserId != null) {
-      globalCallBackOnMessageChange(fromUserId);
+      globalCallBackOnMessageChange(fromUserId, messageId);
     }
     return fromUserId;
   }
@@ -179,7 +179,7 @@ class DbMessages extends CvModelBase {
         columnOtherUserId: userIdFrom,
         columnSendAt: messageSendAt.toIso8601String()
       });
-      globalCallBackOnMessageChange(userIdFrom);
+      globalCallBackOnMessageChange(userIdFrom, messageId);
       return messageId;
     } catch (e) {
       Logger("messsage_model/insertMyMessage").shout("$e");
@@ -200,7 +200,7 @@ class DbMessages extends CvModelBase {
         columnOtherUserId: userIdFrom,
         columnSendAt: messageSendAt.toIso8601String()
       });
-      globalCallBackOnMessageChange(userIdFrom);
+      globalCallBackOnMessageChange(userIdFrom, messageId);
       return messageId;
     } catch (e) {
       Logger("messsage_model/insertOtherMessage").shout("$e");
@@ -235,6 +235,13 @@ class DbMessages extends CvModelBase {
     return messages;
   }
 
+  static Future<DbMessage?> getMessageById(int messageId) async {
+    var rows = await dbProvider.db!.query(tableName,
+        where: "$columnMessageId = ?", whereArgs: [messageId]);
+    List<DbMessage> messages = await convertToDbMessage(rows);
+    return messages.firstOrNull;
+  }
+
   static Future<List<DbMessage>> getAllMessagesForRetransmitting() async {
     var rows = await dbProvider.db!.query(
       tableName,
@@ -289,7 +296,7 @@ class DbMessages extends CvModelBase {
     if (notifyFlutterState) {
       int? fromUserId = await getFromUserIdByMessageId(messageId);
       if (fromUserId != null) {
-        globalCallBackOnMessageChange(fromUserId);
+        globalCallBackOnMessageChange(fromUserId, messageId);
       }
     }
   }
@@ -302,7 +309,7 @@ class DbMessages extends CvModelBase {
       where: "$columnMessageOtherId = ?",
       whereArgs: [messageId],
     );
-    globalCallBackOnMessageChange(fromUserId);
+    globalCallBackOnMessageChange(fromUserId, messageId);
   }
 
   // this ensures that the message id can be spoofed by another person
@@ -314,7 +321,7 @@ class DbMessages extends CvModelBase {
       where: "$columnMessageId = ? AND $columnOtherUserId = ?",
       whereArgs: [messageId, fromUserId],
     );
-    globalCallBackOnMessageChange(fromUserId);
+    globalCallBackOnMessageChange(fromUserId, messageId);
   }
 
   static Future userOpenedOtherMessage(
@@ -351,7 +358,7 @@ class DbMessages extends CvModelBase {
       where: "$messageId = ? AND $columnOtherUserId = ?",
       whereArgs: [messageId, fromUserId],
     );
-    globalCallBackOnMessageChange(fromUserId);
+    globalCallBackOnMessageChange(fromUserId, messageId);
   }
 
   @override
@@ -374,6 +381,7 @@ class DbMessages extends CvModelBase {
       List<dynamic> fromDb) async {
     try {
       List<DbMessage> parsedUsers = [];
+      final box = await getMediaStorage();
       for (int i = 0; i < fromDb.length; i++) {
         dynamic messageOpenedAt = fromDb[i][columnMessageOpenedAt];
 
@@ -397,7 +405,8 @@ class DbMessages extends CvModelBase {
         if (messageOtherId != null) {
           if (content is MediaMessageContent) {
             // when the media was send from the user itself the content is null
-            isDownloaded = await isMediaDownloaded(content.downloadToken);
+            isDownloaded =
+                box.containsKey("${content.downloadToken}_downloaded");
           }
         }
         parsedUsers.add(

lib/src/providers/api/api.dart

@@ -91,7 +91,11 @@ Future sendTextMessage(Int64 target, String message) async {
   DateTime messageSendAt = DateTime.now();
 
   int? messageId = await DbMessages.insertMyMessage(
-      target.toInt(), MessageKind.textMessage, content, messageSendAt);
+    target.toInt(),
+    MessageKind.textMessage,
+    content,
+    messageSendAt,
+  );
   if (messageId == null) return;
 
   Message msg = Message(
@@ -264,13 +268,11 @@ Future sendImage(
   }
 
   // first step encrypt and store the encrypted image
-  for (SendImage task in tasks) {
+  await Future.wait(tasks.map((task) => task.encryptAndStore()));
-    await task.encryptAndStore();
-  }
 
   // after the images are safely stored try do upload them one by one
   for (SendImage task in tasks) {
-    await task.upload();
+    task.upload();
   }
 }
 
@@ -332,11 +334,6 @@ Future<Uint8List?> getDownloadedMedia(
   return media;
 }
 
-Future<bool> isMediaDownloaded(List<int> mediaToken) async {
-  final box = await getMediaStorage();
-  return box.containsKey("${mediaToken}_downloaded");
-}
-
 Future initMediaStorage() async {
   final storage = getSecureStorage();
   var containsEncryptionKey =

lib/src/providers/api/server_messages.dart

@@ -57,15 +57,15 @@ Future<client.Response> handleDownloadData(DownloadData data) async {
   final box = await getMediaStorage();
 
   String boxId = data.uploadToken.toString();
+  int? messageId = box.get("${data.uploadToken}_messageId");
   if (data.fin && data.data.isEmpty) {
     // media file was deleted by the server. remove the media from device
 
-    int? messageId = box.get("${data.uploadToken}_messageId");
     if (messageId != null) {
       int? fromUserId = await DbMessages.deleteMessageById(messageId);
       box.delete(boxId);
       if (fromUserId != null) {
-        globalCallBackOnMessageChange(fromUserId);
+        globalCallBackOnMessageChange(fromUserId, messageId);
       }
       box.delete("${data.uploadToken}_fromUserId");
       box.delete("${data.uploadToken}_downloaded");
@@ -107,7 +107,7 @@ Future<client.Response> handleDownloadData(DownloadData data) async {
       }
 
       box.delete(boxId);
-      await globalCallBackOnMessageChange(fromUserId);
+      await globalCallBackOnMessageChange(fromUserId, messageId);
       globalCallBackOnDownloadChange(data.uploadToken, false);
     }
   } else {

lib/src/providers/messages_change_provider.dart

@@ -17,16 +17,31 @@ class MessagesChangeProvider with ChangeNotifier, DiagnosticableTreeMixin {
   Map<int, int> get changeCounter => _changeCounter;
   Map<int, int> get flamesCounter => _flamesCounter;
 
-  Future updateLastMessageFor(int targetUserId) async {
+  Future updateLastMessageFor(int targetUserId, int? messageId) async {
     DbMessage? last =
         await DbMessages.getLastMessagesForPreviewForUser(targetUserId);
     if (last != null) {
       _lastMessage[last.otherUserId] = last;
     }
     flamesCounter[targetUserId] = await getFlamesForOtherUser(targetUserId);
-    notifyListeners();
+    // notifyListeners();
 
-    loadMessagesForUser(targetUserId, force: true);
+    if (messageId == null || _allMessagesFromUser[targetUserId] == null) {
+      loadMessagesForUser(targetUserId, force: true);
+    } else {
+      DbMessage? msg = await DbMessages.getMessageById(messageId);
+      if (msg != null) {
+        int index = _allMessagesFromUser[targetUserId]!
+            .indexWhere((x) => x.messageId == messageId);
+        if (index == -1) {
+          _allMessagesFromUser[targetUserId]!.insert(0, msg);
+        } else {
+          _allMessagesFromUser[targetUserId]![index] = msg;
+        }
+      }
+      _allMessagesFromUser[targetUserId] = allMessagesFromUser[targetUserId]!;
+      notifyListeners();
+    }
   }
 
   Future loadMessagesForUser(int targetUserId, {bool force = false}) async {

lib/src/views/camera_to_share/share_image_editor_view.dart

@@ -373,15 +373,16 @@ class _ShareImageEditorView extends State<ShareImageEditorView> {
                   icon: FaIcon(FontAwesomeIcons.solidPaperPlane),
                   onPressed: () async {
                     if (sendNextMediaToUserId != null) {
-                      Navigator.popUntil(context, (route) => route.isFirst);
                       Uint8List? imageBytes = await getMergedImage();
-                      globalUpdateOfHomeViewPageIndex(1);
                       sendImage(
                         [Int64(sendNextMediaToUserId)],
                         imageBytes!,
                         _isRealTwonly,
                         _maxShowTime,
                       );
+                      Navigator.popUntil(context, (route) => route.isFirst);
+                      globalUpdateOfHomeViewPageIndex(1);
+
                       // send hier...
                       return;
                     }

lib/src/views/camera_to_share/share_image_view.dart

@@ -36,6 +36,7 @@ class _ShareImageView extends State<ShareImageView> {
   List<Contact> _bestFriends = [];
   int maxTotalMediaCounter = 0;
   Uint8List? imageBytes;
+  bool sendingImage = false;
   final HashSet<Int64> _selectedUserIds = HashSet<Int64>();
   final TextEditingController searchUserName = TextEditingController();
   bool showRealTwonlyWarning = false;
@@ -188,7 +189,7 @@ class _ShareImageView extends State<ShareImageView> {
             mainAxisAlignment: MainAxisAlignment.end,
             children: [
               FilledButton.icon(
-                icon: imageBytes == null
+                icon: imageBytes == null || sendingImage
                     ? SizedBox(
                         height: 12,
                         width: 12,
@@ -202,14 +203,19 @@ class _ShareImageView extends State<ShareImageView> {
                   if (imageBytes == null || _selectedUserIds.isEmpty) {
                     return;
                   }
-                  sendImage(
+                  setState(() {
+                    sendingImage = true;
+                  });
+                  await sendImage(
                     _selectedUserIds.toList(),
                     imageBytes!,
                     widget.isRealTwonly,
                     widget.maxShowTime,
                   );
-                  Navigator.popUntil(context, (route) => route.isFirst);
+                  if (context.mounted) {
-                  globalUpdateOfHomeViewPageIndex(1);
+                    Navigator.popUntil(context, (route) => route.isFirst);
+                    globalUpdateOfHomeViewPageIndex(1);
+                  }
                 },
                 style: ButtonStyle(
                     padding: WidgetStateProperty.all<EdgeInsets>(

lib/src/views/chats/chat_item_details_view.dart

@@ -165,6 +165,7 @@ class _ChatItemDetailsViewState extends State<ChatItemDetailsView> {
             .watch<MessagesChangeProvider>()
             .allMessagesFromUser[user.userId.toInt()] ??
         [];
+    print(messages.length);
 
     messages.where((x) => x.messageOpenedAt == null).forEach((message) {
       if (message.messageOtherId != null &&
@@ -219,6 +220,7 @@ class _ChatItemDetailsViewState extends State<ChatItemDetailsView> {
               itemCount: messages.length, // Number of items in the list
               reverse: true,
               itemBuilder: (context, i) {
+                print(i);
                 bool lastMessageFromSameUser = false;
                 if (i > 0) {
                   lastMessageFromSameUser =