Use native js-sdk group call support (#9625)

* Use native js-sdk group call support

Now that the js-sdk supports group calls natively, our group call implementation can be simplified a bit. Switching to the js-sdk implementation also brings the react-sdk up to date with recent MSC3401 changes, and adds support for joining calls from multiple devices. (So, the previous logic which sent to-device messages to prevent multi-device sessions is no longer necessary.)

* Fix strings

* Fix strict type errors

src/components/views/beacon/RoomCallBanner.tsx

@@ -15,34 +15,34 @@ limitations under the License.
 */
 
 import React, { useCallback } from "react";
-import { MatrixEvent, Room } from "matrix-js-sdk/src/matrix";
+import { EventType } from "matrix-js-sdk/src/@types/event";
+import { Room } from "matrix-js-sdk/src/models/room";
+import { logger } from "matrix-js-sdk/src/logger";
 
 import { _t } from "../../../languageHandler";
 import AccessibleButton, { ButtonEvent } from "../elements/AccessibleButton";
 import dispatcher, { defaultDispatcher } from "../../../dispatcher/dispatcher";
 import { ViewRoomPayload } from "../../../dispatcher/payloads/ViewRoomPayload";
 import { Action } from "../../../dispatcher/actions";
-import { Call, ConnectionState, ElementCall } from "../../../models/Call";
+import { ConnectionState, ElementCall } from "../../../models/Call";
 import { useCall } from "../../../hooks/useCall";
 import { useEventEmitterState } from "../../../hooks/useEventEmitter";
 import {
     OwnBeaconStore,
     OwnBeaconStoreEvent,
 } from "../../../stores/OwnBeaconStore";
-import { CallDurationFromEvent } from "../voip/CallDuration";
+import { GroupCallDuration } from "../voip/CallDuration";
 import { SdkContextClass } from "../../../contexts/SDKContext";
 
 interface RoomCallBannerProps {
     roomId: Room["roomId"];
-    call: Call;
+    call: ElementCall;
 }
 
 const RoomCallBannerInner: React.FC<RoomCallBannerProps> = ({
     roomId,
     call,
 }) => {
-    const callEvent: MatrixEvent | null = (call as ElementCall)?.groupCall;
-
     const connect = useCallback(
         (ev: ButtonEvent) => {
             ev.preventDefault();
@@ -57,15 +57,23 @@ const RoomCallBannerInner: React.FC<RoomCallBannerProps> = ({
     );
 
     const onClick = useCallback(() => {
+        const event = call.groupCall.room.currentState.getStateEvents(
+            EventType.GroupCallPrefix, call.groupCall.groupCallId,
+        );
+        if (event === null) {
+            logger.error("Couldn't find a group call event to jump to");
+            return;
+        }
+
         dispatcher.dispatch<ViewRoomPayload>({
             action: Action.ViewRoom,
             room_id: roomId,
             metricsTrigger: undefined,
-            event_id: callEvent.getId(),
+            event_id: event.getId(),
             scroll_into_view: true,
             highlighted: true,
         });
-    }, [callEvent, roomId]);
+    }, [call, roomId]);
 
     return (
         <div
@@ -74,7 +82,7 @@ const RoomCallBannerInner: React.FC<RoomCallBannerProps> = ({
         >
             <div className="mx_RoomCallBanner_text">
                 <span className="mx_RoomCallBanner_label">{ _t("Video call") }</span>
-                <CallDurationFromEvent mxEvent={callEvent} />
+                <GroupCallDuration groupCall={call.groupCall} />
             </div>
 
             <AccessibleButton
@@ -119,12 +127,11 @@ const RoomCallBanner: React.FC<Props> = ({ roomId }) => {
     }
 
     // Split into outer/inner to avoid watching various parts if there is no call
-    if (call) {
-        // No banner if the call is connected (or connecting/disconnecting)
-        if (call.connectionState !== ConnectionState.Disconnected) return null;
-
-        return <RoomCallBannerInner call={call} roomId={roomId} />;
+    // No banner if the call is connected (or connecting/disconnecting)
+    if (call !== null && call.connectionState === ConnectionState.Disconnected) {
+        return <RoomCallBannerInner call={call as ElementCall} roomId={roomId} />;
     }
+
     return null;
 };
 

src/components/views/messages/CallEvent.tsx

@@ -18,14 +18,13 @@ import React, { forwardRef, useCallback, useContext, useMemo } from "react";
 
 import type { MatrixEvent } from "matrix-js-sdk/src/models/event";
 import type { RoomMember } from "matrix-js-sdk/src/models/room-member";
-import { Call, ConnectionState } from "../../../models/Call";
+import { ConnectionState, ElementCall } from "../../../models/Call";
 import { _t } from "../../../languageHandler";
 import {
     useCall,
     useConnectionState,
-    useJoinCallButtonDisabled,
-    useJoinCallButtonTooltip,
-    useParticipants,
+    useJoinCallButtonDisabledTooltip,
+    useParticipatingMembers,
 } from "../../../hooks/useCall";
 import defaultDispatcher from "../../../dispatcher/dispatcher";
 import type { ViewRoomPayload } from "../../../dispatcher/payloads/ViewRoomPayload";
@@ -35,38 +34,38 @@ import MemberAvatar from "../avatars/MemberAvatar";
 import { LiveContentSummary, LiveContentType } from "../rooms/LiveContentSummary";
 import FacePile from "../elements/FacePile";
 import MatrixClientContext from "../../../contexts/MatrixClientContext";
-import { CallDuration, CallDurationFromEvent } from "../voip/CallDuration";
+import { CallDuration, GroupCallDuration } from "../voip/CallDuration";
 import AccessibleTooltipButton from "../elements/AccessibleTooltipButton";
 
 const MAX_FACES = 8;
 
 interface ActiveCallEventProps {
     mxEvent: MatrixEvent;
-    participants: Set<RoomMember>;
+    call: ElementCall | null;
+    participatingMembers: RoomMember[];
     buttonText: string;
     buttonKind: string;
-    buttonTooltip?: string;
-    buttonDisabled?: boolean;
+    buttonDisabledTooltip?: string;
     onButtonClick: ((ev: ButtonEvent) => void) | null;
 }
 
 const ActiveCallEvent = forwardRef<any, ActiveCallEventProps>(
     (
         {
             mxEvent,
-            participants,
+            call,
+            participatingMembers,
             buttonText,
             buttonKind,
-            buttonDisabled,
-            buttonTooltip,
+            buttonDisabledTooltip,
             onButtonClick,
         },
         ref,
     ) => {
         const senderName = useMemo(() => mxEvent.sender?.name ?? mxEvent.getSender(), [mxEvent]);
 
-        const facePileMembers = useMemo(() => [...participants].slice(0, MAX_FACES), [participants]);
-        const facePileOverflow = participants.size > facePileMembers.length;
+        const facePileMembers = useMemo(() => participatingMembers.slice(0, MAX_FACES), [participatingMembers]);
+        const facePileOverflow = participatingMembers.length > facePileMembers.length;
 
         return <div className="mx_CallEvent_wrapper" ref={ref}>
             <div className="mx_CallEvent mx_CallEvent_active">
@@ -85,17 +84,17 @@ const ActiveCallEvent = forwardRef<any, ActiveCallEventProps>(
                         type={LiveContentType.Video}
                         text={_t("Video call")}
                         active={false}
-                        participantCount={participants.size}
+                        participantCount={participatingMembers.length}
                     />
                     <FacePile members={facePileMembers} faceSize={24} overflow={facePileOverflow} />
                 </div>
-                <CallDurationFromEvent mxEvent={mxEvent} />
+                { call && <GroupCallDuration groupCall={call.groupCall} /> }
                 <AccessibleTooltipButton
                     className="mx_CallEvent_button"
                     kind={buttonKind}
-                    disabled={onButtonClick === null || buttonDisabled}
+                    disabled={onButtonClick === null || buttonDisabledTooltip !== undefined}
                     onClick={onButtonClick}
-                    tooltip={buttonTooltip}
+                    tooltip={buttonDisabledTooltip}
                 >
                     { buttonText }
                 </AccessibleTooltipButton>
@@ -106,14 +105,13 @@ const ActiveCallEvent = forwardRef<any, ActiveCallEventProps>(
 
 interface ActiveLoadedCallEventProps {
     mxEvent: MatrixEvent;
-    call: Call;
+    call: ElementCall;
 }
 
 const ActiveLoadedCallEvent = forwardRef<any, ActiveLoadedCallEventProps>(({ mxEvent, call }, ref) => {
     const connectionState = useConnectionState(call);
-    const participants = useParticipants(call);
-    const joinCallButtonTooltip = useJoinCallButtonTooltip(call);
-    const joinCallButtonDisabled = useJoinCallButtonDisabled(call);
+    const participatingMembers = useParticipatingMembers(call);
+    const joinCallButtonDisabledTooltip = useJoinCallButtonDisabledTooltip(call);
 
     const connect = useCallback((ev: ButtonEvent) => {
         ev.preventDefault();
@@ -142,11 +140,11 @@ const ActiveLoadedCallEvent = forwardRef<any, ActiveLoadedCallEventProps>(({ mxE
     return <ActiveCallEvent
         ref={ref}
         mxEvent={mxEvent}
-        participants={participants}
+        call={call}
+        participatingMembers={participatingMembers}
         buttonText={buttonText}
         buttonKind={buttonKind}
-        buttonDisabled={joinCallButtonDisabled}
-        buttonTooltip={joinCallButtonTooltip}
+        buttonDisabledTooltip={joinCallButtonDisabledTooltip ?? undefined}
         onButtonClick={onButtonClick}
     />;
 });
@@ -159,7 +157,6 @@ interface CallEventProps {
  * An event tile representing an active or historical Element call.
  */
 export const CallEvent = forwardRef<any, CallEventProps>(({ mxEvent }, ref) => {
-    const noParticipants = useMemo(() => new Set<RoomMember>(), []);
     const client = useContext(MatrixClientContext);
     const call = useCall(mxEvent.getRoomId()!);
     const latestEvent = client.getRoom(mxEvent.getRoomId())!.currentState
@@ -180,12 +177,13 @@ export const CallEvent = forwardRef<any, CallEventProps>(({ mxEvent }, ref) => {
         return <ActiveCallEvent
             ref={ref}
             mxEvent={mxEvent}
-            participants={noParticipants}
+            call={null}
+            participatingMembers={[]}
             buttonText={_t("Join")}
             buttonKind="primary"
             onButtonClick={null}
         />;
     }
 
-    return <ActiveLoadedCallEvent mxEvent={mxEvent} call={call} ref={ref} />;
+    return <ActiveLoadedCallEvent mxEvent={mxEvent} call={call as ElementCall} ref={ref} />;
 });

src/components/views/rooms/LiveContentSummary.tsx

@@ -19,7 +19,7 @@ import classNames from "classnames";
 
 import { _t } from "../../../languageHandler";
 import { Call } from "../../../models/Call";
-import { useParticipants } from "../../../hooks/useCall";
+import { useParticipantCount } from "../../../hooks/useCall";
 
 export enum LiveContentType {
     Video,
@@ -62,13 +62,10 @@ interface LiveContentSummaryWithCallProps {
     call: Call;
 }
 
-export function LiveContentSummaryWithCall({ call }: LiveContentSummaryWithCallProps) {
-    const participants = useParticipants(call);
-
-    return <LiveContentSummary
+export const LiveContentSummaryWithCall: FC<LiveContentSummaryWithCallProps> = ({ call }) =>
+    <LiveContentSummary
         type={LiveContentType.Video}
         text={_t("Video")}
         active={false}
-        participantCount={participants.size}
+        participantCount={useParticipantCount(call)}
     />;
-}

src/components/views/rooms/RoomHeader.tsx

@@ -66,7 +66,7 @@ import IconizedContextMenu, {
     IconizedContextMenuRadio,
 } from "../context_menus/IconizedContextMenu";
 import { ViewRoomPayload } from "../../../dispatcher/payloads/ViewRoomPayload";
-import { CallDurationFromEvent } from "../voip/CallDuration";
+import { GroupCallDuration } from "../voip/CallDuration";
 import { Alignment } from "../elements/Tooltip";
 import RoomCallBanner from '../beacon/RoomCallBanner';
 
@@ -512,7 +512,7 @@ export default class RoomHeader extends React.Component<IProps, IState> {
         }
 
         if (this.props.viewingCall && this.props.activeCall instanceof ElementCall) {
-            startButtons.push(<CallLayoutSelector call={this.props.activeCall} />);
+            startButtons.push(<CallLayoutSelector key="layout" call={this.props.activeCall} />);
         }
 
         if (!this.props.viewingCall && this.props.onForgetClick) {
@@ -685,7 +685,7 @@ export default class RoomHeader extends React.Component<IProps, IState> {
                             { _t("Video call") }
                         </div>
                         { this.props.activeCall instanceof ElementCall && (
-                            <CallDurationFromEvent mxEvent={this.props.activeCall.groupCall} />
+                            <GroupCallDuration groupCall={this.props.activeCall.groupCall} />
                         ) }
                         { /* Empty topic element to fill out space */ }
                         <div className="mx_RoomHeader_topic" />

src/components/views/rooms/RoomTileCallSummary.tsx

@@ -18,7 +18,7 @@ import React, { FC } from "react";
 
 import type { Call } from "../../../models/Call";
 import { _t } from "../../../languageHandler";
-import { useConnectionState, useParticipants } from "../../../hooks/useCall";
+import { useConnectionState, useParticipantCount } from "../../../hooks/useCall";
 import { ConnectionState } from "../../../models/Call";
 import { LiveContentSummary, LiveContentType } from "./LiveContentSummary";
 
@@ -27,13 +27,10 @@ interface Props {
 }
 
 export const RoomTileCallSummary: FC<Props> = ({ call }) => {
-    const connectionState = useConnectionState(call);
-    const participants = useParticipants(call);
-
     let text: string;
     let active: boolean;
 
-    switch (connectionState) {
+    switch (useConnectionState(call)) {
         case ConnectionState.Disconnected:
             text = _t("Video");
             active = false;
@@ -53,6 +50,6 @@ export const RoomTileCallSummary: FC<Props> = ({ call }) => {
         type={LiveContentType.Video}
         text={text}
         active={active}
-        participantCount={participants.size}
+        participantCount={useParticipantCount(call)}
     />;
 };

src/components/views/voip/CallDuration.tsx

@@ -14,9 +14,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import React, { FC, useState, useEffect } from "react";
+import React, { FC, useState, useEffect, memo } from "react";
+import { GroupCall } from "matrix-js-sdk/src/webrtc/groupCall";
 
-import type { MatrixEvent } from "matrix-js-sdk/src/models/event";
 import { formatCallTime } from "../../../DateUtils";
 
 interface CallDurationProps {
@@ -26,26 +26,28 @@ interface CallDurationProps {
 /**
  * A call duration counter.
  */
-export const CallDuration: FC<CallDurationProps> = ({ delta }) => {
+export const CallDuration: FC<CallDurationProps> = memo(({ delta }) => {
     // Clock desync could lead to a negative duration, so just hide it if that happens
     if (delta <= 0) return null;
     return <div className="mx_CallDuration">{ formatCallTime(new Date(delta)) }</div>;
-};
+});
 
-interface CallDurationFromEventProps {
-    mxEvent: MatrixEvent;
+interface GroupCallDurationProps {
+    groupCall: GroupCall;
 }
 
 /**
- * A call duration counter that automatically counts up, given the event that
- * started the call.
+ * A call duration counter that automatically counts up, given a live GroupCall
+ * object.
  */
-export const CallDurationFromEvent: FC<CallDurationFromEventProps> = ({ mxEvent }) => {
+export const GroupCallDuration: FC<GroupCallDurationProps> = ({ groupCall }) => {
     const [now, setNow] = useState(() => Date.now());
     useEffect(() => {
         const timer = setInterval(() => setNow(Date.now()), 1000);
         return () => clearInterval(timer);
     }, []);
 
-    return <CallDuration delta={now - mxEvent.getTs()} />;
+    return groupCall.creationTs === null
+        ? null
+        : <CallDuration delta={now - groupCall.creationTs} />;
 };