From c4255f340a2c028aede31bb4cb353772a94b71d3 Mon Sep 17 00:00:00 2001
From: Henry-Hiles <henry@henryhiles.com>
Date: Tue, 19 May 2026 21:54:21 -0400
Subject: [PATCH] Support for loading history and marking read

---
 lib/widgets/room_chat.dart | 43 ++++++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 18 deletions(-)

diff --git a/lib/widgets/room_chat.dart b/lib/widgets/room_chat.dart
index 3dcea9b..7d28838 100644
--- a/lib/widgets/room_chat.dart
+++ b/lib/widgets/room_chat.dart
@@ -7,6 +7,7 @@ import "package:nexus/controllers/account_data_controller.dart";
 import "package:nexus/controllers/client_controller.dart";
 import "package:nexus/controllers/client_state_controller.dart";
 import "package:nexus/controllers/power_level_controller.dart";
+import "package:nexus/controllers/rooms_controller.dart";
 import "package:nexus/controllers/selected_room_controller.dart";
 import "package:nexus/controllers/room_chat_controller.dart";
 import "package:nexus/controllers/via_controller.dart";
@@ -45,13 +46,6 @@ class RoomChat extends HookConsumerWidget {
 
     final memberListOpened = useState<bool>(showMembersByDefault);
 
-    final listController = useRef(ListController());
-    final scrollController = useScrollController(
-      onAttach: (position) => position.addListener(() {
-        // TODO: Do things on scroll to top or bottom
-      }),
-    );
-
     final userId = ref.watch(ClientStateController.provider)?.userId;
     final roomId = ref.watch(
       SelectedRoomController.provider.select((value) => value?.metadata?.id),
@@ -78,6 +72,21 @@ class RoomChat extends HookConsumerWidget {
     final controllerProvider = RoomChatController.provider(roomId);
     final notifier = ref.watch(controllerProvider.notifier);
 
+    final client = ref.watch(ClientController.provider.notifier);
+
+    final listController = useRef(ListController());
+    final scrollController = useScrollController();
+    scrollController.addListener(() async {
+      if (!scrollController.position.atEdge) return;
+
+      if (scrollController.position.pixels == 0) {
+        final room = ref.watch(RoomsController.provider)[roomId];
+        if (room != null) client.markRead(room);
+      } else {
+        await notifier.loadOlder();
+      }
+    });
+
     final composerNode = useFocusNode(
       onKeyEvent: (_, event) {
         if (event is KeyDownEvent &&
@@ -269,17 +278,15 @@ class RoomChat extends HookConsumerWidget {
                     ),
                     TextButton(
                       onPressed: () {
-                        ref
-                            .watch(ClientController.provider.notifier)
-                            .reportEvent(
-                              ReportRequest(
-                                roomId: roomId,
-                                eventId: event.eventId,
-                                reason: reasonController.text.isEmpty
-                                    ? null
-                                    : reasonController.text,
-                              ),
-                            );
+                        client.reportEvent(
+                          ReportRequest(
+                            roomId: roomId,
+                            eventId: event.eventId,
+                            reason: reasonController.text.isEmpty
+                                ? null
+                                : reasonController.text,
+                          ),
+                        );
                         Navigator.of(context).pop();
                       },
                       child: Text("Report"),