fix(calls): a finished call no longer rings again after a reload (#312)

After a reload/restart within a ring's lifetime, the catch-up sync replays
the ring together with the caller's hang-up and our own decline, and the
MatrixRTC session can keep the stale join. The client rang again for up to
90 s and showed "1 Live" (call screen instead of chat) for minutes.

- Before ringing, check the room STATE (utils/callRing.ts, unit-tested):
  no ring if we already declined that ring or are in the call; if the
  caller has no active membership yet, re-check after 4 s (a real call's
  membership can land just after its ring) and ring only if they joined.
- The "caller gone" dismissal also consults room state, not only the
  possibly stale session.
- When sync becomes live (startup or reconnect), recompute every active
  RTC session from the current state, clearing a stale "Live".

Verified headless (Bob's membership + ring in an invite-only room):
live ring rings; hang-up stops it; reload within the window: before
rang again + "1 Live", now no ring and no "Live"; a ring that arrives
just before the membership still rings.

Fixes #312

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/app/components/CallEmbedProvider.tsx

@@ -18,8 +18,10 @@ import {
   toRem,
 } from 'folds';
 import {
+  ClientEvent,
   EventTimelineSetHandlerMap,
   EventType,
+  SyncState,
   RelationType,
   Room,
   RoomEvent,
@@ -71,8 +73,8 @@ import { useReducedMotion } from '../hooks/useReducedMotion';
 import { useSetting } from '../state/hooks/settings';
 import { useCallPreferences } from '../state/hooks/callPreferences';
 import { settingsAtom } from '../state/settings';
-import { getStateEvent, getMemberName, isFromFilteredTimelineSet } from '../utils/room';
-import { isRingableRoom } from '../utils/callRing';
+import { getStateEvent, getMemberName } from '../utils/room';
+import { declinedRing, hasActiveCallMembership, isRingableRoom } from '../utils/callRing';
 import { StateEvent } from '../../types/matrix/room';
 import { getPowersLevelFromMatrixEvent } from '../hooks/usePowerLevels';
 import { getRoomCreatorsForRoomId } from '../hooks/useRoomCreators';
@@ -494,7 +496,6 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
 
   const handleTimelineEvent: EventTimelineSetHandlerMap[RoomEvent.Timeline] = useCallback(
     async (event, room, toStartOfTimeline, removed, data) => {
-      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259]
       // only process rtc notification reference events.
       // we do not want to wait to decrypt all events.
       if (event.getRelation()?.rel_type !== RelationType.Reference) return;
@@ -597,11 +598,50 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
         refEventId,
       };
 
-      setCallInfo(info);
+      // [Gitea #312] Don't ring for a call that is already over or handled: after
+      // a reload the first sync replays the ring together with the caller's
+      // hang-up and our own decline. Check the room STATE (not the possibly
+      // stale RTC session). The caller's membership can arrive just after the
+      // ring, so an absent one gets a short grace period before giving up.
+      const myUserId = mx.getSafeUserId();
+      if (declinedRing(room, refEventId, myUserId) || hasActiveCallMembership(room, myUserId)) {
+        return;
+      }
+      if (hasActiveCallMembership(room, sender)) {
+        setCallInfo(info);
+        return;
+      }
+      setTimeout(() => {
+        if (Date.now() >= senderTs + lifetime) return;
+        if (declinedRing(room, refEventId, myUserId) || hasActiveCallMembership(room, myUserId)) {
+          return;
+        }
+        if (hasActiveCallMembership(room, sender)) setCallInfo(info);
+      }, 4000);
     },
     [mx, directs, callEmbed, setToast],
   );
 
+  // [Gitea #312] A catch-up sync (after a reload or reconnect) can replay a
+  // call's join and leave in one batch, and the RTC session may keep the join
+  // (stale "1 Live", call screen instead of chat). Once sync is live again,
+  // recompute every active session from the room's current state.
+  useEffect(() => {
+    const onSync = (state: SyncState, prev: SyncState | null) => {
+      if (state !== SyncState.Syncing || prev === SyncState.Syncing) return;
+      mx.getRooms().forEach((r) => {
+        mx.matrixRTC
+          .getActiveRoomSession(r)
+          ?._onRTCSessionMemberUpdate()
+          .catch(() => undefined);
+      });
+    };
+    mx.on(ClientEvent.Sync, onSync);
+    return () => {
+      mx.removeListener(ClientEvent.Sync, onSync);
+    };
+  }, [mx]);
+
   useEffect(() => {
     mx.on(RoomEvent.Timeline, handleTimelineEvent);
     return () => {
@@ -630,7 +670,10 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
       const { memberships } = session;
       if (memberships.some((m) => m.sender === myUserId))
         dismiss(); // answered elsewhere
-      else if (memberships.length === 0) dismiss(); // caller gone
+      else if (memberships.length === 0)
+        dismiss(); // caller gone
+      // [Gitea #312] The session can be stale after a reload; the room state isn't.
+      else if (!hasActiveCallMembership(room, callInfo.sender)) dismiss();
     };
     const onTimeline: EventTimelineSetHandlerMap[RoomEvent.Timeline] = (
       event,
@@ -640,7 +683,6 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
       data,
     ) => {
       if (eventRoom?.roomId !== room.roomId || !data.liveEvent) return;
-      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259]
       if (event.getType() === EventType.RTCDecline && event.getSender() === myUserId) {
         const related = event.getRelation()?.event_id;
         if (!related || related === refEventId) dismiss(); // declined elsewhere

src/app/features/room/RoomTimeline.tsx

@@ -90,7 +90,6 @@ import {
   isMembershipChanged,
   reactionOrEditEvent,
   sendRoomEvent,
-  isFromFilteredTimelineSet,
 } from '../../utils/room';
 import { getLastEditDiff } from '../../utils/editDiff';
 import { tick } from '../../utils/haptics';
@@ -411,9 +410,6 @@ const useLiveEventArrive = (room: Room, onArrive: (mEvent: MatrixEvent) => void)
       data,
     ) => {
       if (eventRoom?.roomId !== room.roomId || !data.liveEvent) return;
-      // [Gitea #259] The media gallery / activity log register filtered timeline
-      // sets whose events the room re-emits as live: don't count them twice.
-      if (isFromFilteredTimelineSet(data)) return;
       onArrive(mEvent);
     };
     const handleRedaction: RoomEventHandlerMap[RoomEvent.Redaction] = (mEvent, eventRoom) => {

src/app/features/room/widgets/RoomWidgetView.tsx

@@ -14,7 +14,6 @@ import { GeneralWidgetDriver } from './GeneralWidgetDriver';
 import { WidgetPermissionRequest, isWidgetUrlSafe } from './widgetUtils';
 import { restrictWidgetMessages } from '../../../plugins/widgetTransport';
 import { WidgetPermissionPrompt } from './WidgetPermissionPrompt';
-import { isFromFilteredTimelineSet } from '../../../utils/room';
 
 type PendingAsk = {
   requests: WidgetPermissionRequest[];
@@ -112,7 +111,6 @@ export function RoomWidgetView({ room, widget }: RoomWidgetViewProps) {
     };
     const onTimeline: RoomEventHandlerMap[RoomEvent.Timeline] = (ev, r, toStart, removed, data) => {
       if (toStart || removed || !data?.liveEvent) return;
-      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259] don't feed widgets each event twice
       if (ev.isBeingDecrypted()) ev.once(MatrixEventEvent.Decrypted, feed);
       else feed(ev);
     };

src/app/pages/client/ClientNonUIFeatures.tsx

@@ -49,7 +49,6 @@ import {
   getNotificationType,
   getUnreadInfo,
   isNotificationEvent,
-  isFromFilteredTimelineSet,
 } from '../../utils/room';
 import { NotificationType } from '../../../types/matrix/room';
 import { mxcUrlToHttp } from '../../utils/matrix';
@@ -680,7 +679,6 @@ function MessageNotifications() {
       data,
     ) => {
       if (mx.getSyncState() !== 'SYNCING') return;
-      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259] no duplicate notifications
       if (document.hasFocus() && (selectedRoomId === room?.roomId || notificationSelected)) return;
       if (
         !room ||
@@ -1120,7 +1118,6 @@ function ClockSkewFeature() {
       data,
     ) => {
       if (!data.liveEvent) return;
-      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259]
       // Only events our homeserver stamped: a federated event's
       // origin_server_ts is the other server's clock.
       const senderServer = mEvent.getSender()?.split(':').slice(1).join(':');

src/app/state/room/roomToUnread.ts

@@ -24,7 +24,6 @@ import {
   getUnreadInfo,
   getUnreadInfos,
   isNotificationEvent,
-  isFromFilteredTimelineSet,
 } from '../../utils/room';
 import { roomToParentsAtom } from './roomToParents';
 import { useStateEventCallback } from '../../hooks/useStateEventCallback';
@@ -237,7 +236,6 @@ export const useBindRoomToUnreadAtom = (mx: MatrixClient, unreadAtom: typeof roo
       data: IRoomTimelineData,
     ) => {
       if (!room || !data.liveEvent || room.isSpaceRoom() || !isNotificationEvent(mEvent)) return;
-      if (isFromFilteredTimelineSet(data)) return; // [Gitea #259]
       // Single-owner rule: thread replies drive the room badge via
       // RoomEvent.UnreadNotifications below — ignore them here so the count is
       // never double-driven / mis-attributed to the main timeline.

src/app/utils/callRing.test.ts

@@ -1,7 +1,7 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import type { Room } from 'matrix-js-sdk';
-import { isRingableRoom } from './callRing';
+import { declinedRing, hasActiveCallMembership, isRingableRoom } from './callRing';
 
 const fakeRoom = (opts: { callRoom?: boolean; joinRule?: string; spaceParent?: boolean }): Room =>
   ({
@@ -27,3 +27,43 @@ test('space channels, public and restricted rooms do not ring', () => {
   assert.equal(isRingableRoom(fakeRoom({ joinRule: 'public' }), false), false);
   assert.equal(isRingableRoom(fakeRoom({ joinRule: 'restricted' }), false), false);
 });
+
+const stateRoom = (
+  members: Array<{ sender: string; content: Record<string, unknown> }>,
+  timeline: unknown[] = [],
+): Room =>
+  ({
+    getLiveTimeline: () => ({
+      getState: () => ({
+        getStateEvents: () =>
+          members.map((m) => ({
+            getSender: () => m.sender,
+            getStateKey: () => `_${m.sender}_DEV_m.call`,
+            getContent: () => m.content,
+          })),
+      }),
+      getEvents: () => timeline,
+    }),
+  }) as unknown as Room;
+
+test('hasActiveCallMembership reads the room state: joined vs left (#312)', () => {
+  const room = stateRoom([
+    { sender: '@bob:x', content: { application: 'm.call', call_id: '' } },
+    { sender: '@carol:x', content: {} },
+  ]);
+  assert.equal(hasActiveCallMembership(room, '@bob:x'), true);
+  assert.equal(hasActiveCallMembership(room, '@carol:x'), false, 'left = empty content');
+  assert.equal(hasActiveCallMembership(room, '@dave:x'), false);
+});
+
+test('declinedRing finds our own decline of that ring only (#312)', () => {
+  const decline = (sender: string, rel: string) => ({
+    getType: () => 'org.matrix.msc4310.rtc.decline',
+    getSender: () => sender,
+    getRelation: () => ({ event_id: rel }),
+  });
+  const room = stateRoom([], [decline('@me:x', '$ring1'), decline('@bob:x', '$ring2')]);
+  assert.equal(declinedRing(room, '$ring1', '@me:x'), true);
+  assert.equal(declinedRing(room, '$ring2', '@me:x'), false, "someone else's decline");
+  assert.equal(declinedRing(room, '$ring3', '@me:x'), false);
+});

src/app/utils/callRing.ts

@@ -16,3 +16,37 @@ export const isRingableRoom = (room: Room, isDirect: boolean): boolean => {
   const isSpaceChild = getStateEvents(room, StateEvent.SpaceParent).length > 0;
   return !isSpaceChild && room.getJoinRule() === JoinRule.Invite;
 };
+
+/** A call-membership state event that is still "in the call" (left = empty content). */
+const isActiveMembership = (content: Record<string, unknown> | undefined): boolean =>
+  !!content &&
+  (typeof content.application === 'string' ||
+    (Array.isArray(content.memberships) && content.memberships.length > 0));
+
+/**
+ * [Gitea #312] Whether `userId` is in a call in `room` according to the room's
+ * current STATE. After a reload the MatrixRTC session can be stale (a join and
+ * leave replayed in one catch-up batch), but the state is right.
+ */
+export const hasActiveCallMembership = (room: Room, userId: string): boolean =>
+  getStateEvents(room, StateEvent.GroupCallMemberPrefix).some(
+    (ev) =>
+      (ev.getSender() === userId || ev.getStateKey()?.includes(userId)) &&
+      isActiveMembership(ev.getContent()),
+  );
+
+/**
+ * [Gitea #312] Whether we already handled the ring `refEventId` points at:
+ * declined it (our own RTCDecline relates to it) — e.g. replayed together with
+ * the ring in the first sync after a restart, before any dismiss listener.
+ */
+export const declinedRing = (room: Room, refEventId: string, myUserId: string): boolean =>
+  room
+    .getLiveTimeline()
+    .getEvents()
+    .some(
+      (ev) =>
+        ev.getType() === 'org.matrix.msc4310.rtc.decline' &&
+        ev.getSender() === myUserId &&
+        ev.getRelation()?.event_id === refEventId,
+    );

src/app/utils/filteredTimeline.test.ts

@@ -1,20 +0,0 @@
-import { test } from 'node:test';
-import assert from 'node:assert/strict';
-import type { IRoomTimelineData } from 'matrix-js-sdk';
-import { isFromFilteredTimelineSet } from './room';
-
-const data = (filter: unknown): IRoomTimelineData =>
-  ({
-    liveEvent: true,
-    timeline: { getTimelineSet: () => ({ getFilter: () => filter }) },
-  }) as unknown as IRoomTimelineData;
-
-test('isFromFilteredTimelineSet: gallery/activity-log sets are filtered, the main set is not (#259)', () => {
-  assert.equal(isFromFilteredTimelineSet(data({ filterId: 'media' })), true);
-  assert.equal(isFromFilteredTimelineSet(data(undefined)), false);
-  assert.equal(isFromFilteredTimelineSet(undefined), false);
-  assert.equal(
-    isFromFilteredTimelineSet({ liveEvent: true } as unknown as IRoomTimelineData),
-    false,
-  );
-});

src/app/utils/room.ts

@@ -20,7 +20,6 @@ import {
   Room,
   RoomMember,
   TimelineEvents,
-  IRoomTimelineData,
 } from 'matrix-js-sdk';
 import { CryptoBackend } from 'matrix-js-sdk/lib/common-crypto/CryptoBackend';
 import type { RoomMessageEventContent } from 'matrix-js-sdk/lib/@types/events';
@@ -848,14 +847,3 @@ export const guessPerfectParent = (
 
   return perfectParent;
 };
-
-/**
- * [Gitea #259] Whether a RoomEvent.Timeline emit came from a FILTERED timeline
- * set. The media gallery and activity log register filtered sets on the room
- * (getOrCreateFilteredTimelineSet), and the room re-emits their events with
- * liveEvent: true, so listeners that mean "a new event in the room" saw each
- * matching event twice (the timeline window drifted, notifications doubled).
- * The room's main and thread sets have no filter.
- */
-export const isFromFilteredTimelineSet = (data?: IRoomTimelineData): boolean =>
-  !!data?.timeline?.getTimelineSet()?.getFilter();