feat: Implement private read receipts

assets/l10n/intl_en.arb

@@ -2416,5 +2416,6 @@
         "placeholders": {
             "roomName": {}
         }
-    }
+    },
+    "sendReadReceipts": "Send read receipts"
 }

lib/config/app_config.dart

@@ -47,6 +47,7 @@ abstract class AppConfig {
   static bool separateChatTypes = false;
   static bool autoplayImages = true;
   static bool sendTypingNotifications = true;
+  static bool sendPublicReadReceipts = true;
   static bool? sendOnEnter;
   static bool experimentalVoip = false;
   static const bool hideTypingUsernames = false;

lib/config/setting_keys.dart

@@ -24,6 +24,8 @@ abstract class SettingKeys {
   static const String autoplayImages = 'chat.fluffy.autoplay_images';
   static const String sendTypingNotifications =
       'chat.fluffy.send_typing_notifications';
+  static const String sendPublicReadReceipts =
+      'chat.fluffy.send_public_read_receipts';
   static const String sendOnEnter = 'chat.fluffy.send_on_enter';
   static const String experimentalVoip = 'chat.fluffy.experimental_voip';
 }

lib/pages/chat/chat.dart

@@ -388,7 +388,12 @@ class ChatController extends State<ChatPageWithRoom>
 
     Logs().d('Set read marker...', eventId);
     // ignore: unawaited_futures
-    _setReadMarkerFuture = timeline.setReadMarker(eventId: eventId).then((_) {
+    _setReadMarkerFuture = timeline
+        .setReadMarker(
+      eventId: eventId,
+      public: AppConfig.sendPublicReadReceipts,
+    )
+        .then((_) {
       _setReadMarkerFuture = null;
     });
     if (eventId == null || eventId == timeline.room.lastEvent?.eventId) {

lib/pages/settings_chat/settings_chat_view.dart

@@ -70,6 +70,12 @@ class SettingsChatView extends StatelessWidget {
                 storeKey: SettingKeys.sendTypingNotifications,
                 defaultValue: AppConfig.sendTypingNotifications,
               ),
+              SettingsSwitchListTile.adaptive(
+                title: L10n.of(context)!.sendReadReceipts,
+                onChanged: (b) => AppConfig.sendPublicReadReceipts = b,
+                storeKey: SettingKeys.sendPublicReadReceipts,
+                defaultValue: AppConfig.sendPublicReadReceipts,
+              ),
               SettingsSwitchListTile.adaptive(
                 title: L10n.of(context)!.sendOnEnter,
                 onChanged: (b) => AppConfig.sendOnEnter = b,

lib/widgets/local_notifications_extension.dart

@@ -111,7 +111,11 @@ extension LocalNotificationsExtension on MatrixState {
             .singleWhere((a) => a.name == actionStr);
         switch (action) {
           case DesktopNotificationActions.seen:
-            room.setReadMarker(event.eventId, mRead: event.eventId);
+            room.setReadMarker(
+              event.eventId,
+              mRead: event.eventId,
+              public: AppConfig.sendPublicReadReceipts,
+            );
             break;
           case DesktopNotificationActions.openChat:
             context.go('/rooms/${room.id}');

lib/widgets/matrix.dart

@@ -459,6 +459,10 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
         store.getBool(SettingKeys.sendTypingNotifications) ??
             AppConfig.sendTypingNotifications;
 
+    AppConfig.sendPublicReadReceipts =
+        store.getBool(SettingKeys.sendPublicReadReceipts) ??
+            AppConfig.sendPublicReadReceipts;
+
     AppConfig.sendOnEnter =
         store.getBool(SettingKeys.sendOnEnter) ?? AppConfig.sendOnEnter;