dm calls mvp: phase 1: outgoing DM voice call via element-call voiceOnly intent

public/locales/en.json

@@ -382,6 +382,12 @@
     "rate_limited": "Server rate-limited your request for {{minutes}} minutes!",
     "create": "Create"
   },
+  "Call": {
+    "start": "Start call",
+    "join": "Join call",
+    "unavailable": "Calls are unavailable",
+    "busy_other_room": "You are already in a call"
+  },
   "Room": {
     "new_messages": "New Messages",
     "jump_to_unread": "Jump to Unread",

public/locales/ru.json

@@ -382,6 +382,12 @@
     "rate_limited": "Сервер ограничил частоту запросов на {{minutes}} мин.!",
     "create": "Создать"
   },
+  "Call": {
+    "start": "Позвонить",
+    "join": "Присоединиться",
+    "unavailable": "Звонки недоступны",
+    "busy_other_room": "Вы уже в другом звонке"
+  },
   "Room": {
     "new_messages": "Новые сообщения",
     "jump_to_unread": "К непрочитанным",

src/app/components/CallEmbedProvider.tsx

@@ -1,6 +1,5 @@
 import React, { ReactNode, useCallback, useRef } from 'react';
 import { useAtomValue, useSetAtom } from 'jotai';
-import { config } from 'folds';
 import {
   CallEmbedContextProvider,
   CallEmbedRefContextProvider,
@@ -43,7 +42,12 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
 
   const chatOnlyView = chat && screenSize !== ScreenSize.Desktop;
 
-  const callVisible = callEmbed && selectedRoom === callEmbed.roomId && joined && !chatOnlyView;
+  const callVisible =
+    callEmbed &&
+    !callEmbed.voiceOnly &&
+    selectedRoom === callEmbed.roomId &&
+    joined &&
+    !chatOnlyView;
 
   return (
     <CallEmbedContextProvider value={callEmbed}>
@@ -53,6 +57,7 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
         data-call-embed-container
         style={{
           visibility: callVisible ? undefined : 'hidden',
+          pointerEvents: callVisible ? undefined : 'none',
           position: 'fixed',
           top: 0,
           left: 0,

src/app/features/call-status/CallControl.tsx

@@ -185,18 +185,22 @@ export function CallControl({
           onToggle={() => callEmbed.control.toggleSound()}
           disabled={!callJoined}
         />
-        {!compact && <StatusDivider />}
-        <VideoButton
-          enabled={video}
-          onToggle={() => callEmbed.control.toggleVideo()}
-          disabled={!callJoined}
-        />
-        {!compact && (
-          <ScreenShareButton
-            enabled={screenshare}
-            onToggle={() => callEmbed.control.toggleScreenshare()}
-            disabled={!callJoined}
-          />
+        {!callEmbed.voiceOnly && (
+          <>
+            {!compact && <StatusDivider />}
+            <VideoButton
+              enabled={video}
+              onToggle={() => callEmbed.control.toggleVideo()}
+              disabled={!callJoined}
+            />
+            {!compact && (
+              <ScreenShareButton
+                enabled={screenshare}
+                onToggle={() => callEmbed.control.toggleScreenshare()}
+                disabled={!callJoined}
+              />
+            )}
+          </>
         )}
       </Box>
       <StatusDivider />

src/app/features/room/RoomViewHeader.tsx

@@ -1,4 +1,5 @@
 import React, { MouseEventHandler, forwardRef, useState } from 'react';
+import { useAtomValue } from 'jotai';
 import FocusTrap from 'focus-trap-react';
 import {
   Box,
@@ -69,6 +70,10 @@ import { useRoomPermissions } from '../../hooks/useRoomPermissions';
 import { InviteUserPrompt } from '../../components/invite-user-prompt';
 import { ContainerColor } from '../../styles/ContainerColor.css';
 import { RoomSettingsPage } from '../../state/roomSettings';
+import { useLivekitSupport } from '../../hooks/useLivekitSupport';
+import { useCallMembers, useCallSession } from '../../hooks/useCall';
+import { useDmCallStart } from '../../hooks/useDmCallStart';
+import { callEmbedAtom } from '../../state/callEmbed';
 
 type RoomMenuProps = {
   room: Room;
@@ -255,6 +260,59 @@ const RoomMenu = forwardRef<HTMLDivElement, RoomMenuProps>(({ room, requestClose
   );
 });
 
+function DmCallButton({ room }: { room: Room }) {
+  const { t } = useTranslation();
+  const mx = useMatrixClient();
+  const startDmCall = useDmCallStart();
+  const livekitSupported = useLivekitSupport();
+  const session = useCallSession(room);
+  const members = useCallMembers(room, session);
+  const currentEmbed = useAtomValue(callEmbedAtom);
+
+  const myUserId = mx.getSafeUserId();
+  const inCallHere = currentEmbed?.roomId === room.roomId;
+  if (inCallHere) return null;
+
+  const inCallElsewhere = !!currentEmbed && currentEmbed.roomId !== room.roomId;
+  const ongoingByOthers = members.length > 0 && !members.some((m) => m.sender === myUserId);
+
+  const disabled = !livekitSupported || inCallElsewhere;
+  let tooltipText: string;
+  if (!livekitSupported) tooltipText = t('Call.unavailable');
+  else if (inCallElsewhere) tooltipText = t('Call.busy_other_room');
+  else if (ongoingByOthers) tooltipText = t('Call.join');
+  else tooltipText = t('Call.start');
+
+  const handleClick = () => {
+    if (disabled) return;
+    startDmCall(room.roomId);
+  };
+
+  return (
+    <TooltipProvider
+      position="Bottom"
+      offset={4}
+      tooltip={
+        <Tooltip>
+          <Text>{tooltipText}</Text>
+        </Tooltip>
+      }
+    >
+      {(triggerRef) => (
+        <IconButton
+          fill="None"
+          ref={triggerRef}
+          onClick={handleClick}
+          disabled={disabled}
+          aria-label={tooltipText}
+        >
+          <Icon size="400" src={Icons.Phone} />
+        </IconButton>
+      )}
+    </TooltipProvider>
+  );
+}
+
 export function RoomViewHeader({ callView }: { callView?: boolean }) {
   const { t } = useTranslation();
   const navigate = useNavigate();
@@ -382,6 +440,7 @@ export function RoomViewHeader({ callView }: { callView?: boolean }) {
         </Box>
 
         <Box shrink="No">
+          {direct && <DmCallButton room={room} />}
           {!encryptedRoom && (
             <TooltipProvider
               position="Bottom"

src/app/hooks/useCallEmbed.ts

@@ -42,22 +42,25 @@ export const createCallEmbed = (
   dm: boolean,
   themeKind: ElementCallThemeKind,
   container: HTMLElement,
-  pref?: CallPreferences
+  pref?: CallPreferences,
+  voiceOnly = false
 ): CallEmbed => {
   const rtcSession = mx.matrixRTC.getRoomSession(room);
   const ongoing =
     MatrixRTCSession.sessionMembershipsForRoom(room, rtcSession.sessionDescription).length > 0;
 
-  const intent = CallEmbed.getIntent(dm, ongoing);
+  const intent = CallEmbed.getIntent(dm, ongoing, voiceOnly);
   const widget = CallEmbed.getWidget(mx, room, intent, themeKind);
-  const controlState = pref && new CallControlState(pref.microphone, pref.video, pref.sound);
+  const controlState =
+    pref &&
+    new CallControlState(pref.microphone, voiceOnly ? false : pref.video, pref.sound);
 
-  const embed = new CallEmbed(mx, room, widget, container, controlState);
+  const embed = new CallEmbed(mx, room, widget, container, controlState, voiceOnly);
 
   return embed;
 };
 
-export const useCallStart = (dm = false) => {
+export const useCallStart = (dm = false, voiceOnly = false) => {
   const mx = useMatrixClient();
   const theme = useTheme();
   const setCallEmbed = useSetAtom(callEmbedAtom);
@@ -69,11 +72,11 @@ export const useCallStart = (dm = false) => {
       if (!container) {
         throw new Error('Failed to start call, No embed container element found!');
       }
-      const callEmbed = createCallEmbed(mx, room, dm, theme.kind, container, pref);
+      const callEmbed = createCallEmbed(mx, room, dm, theme.kind, container, pref, voiceOnly);
 
       setCallEmbed(callEmbed);
     },
-    [mx, dm, theme, setCallEmbed, callEmbedRef]
+    [mx, dm, voiceOnly, theme, setCallEmbed, callEmbedRef]
   );
 
   return startCall;

src/app/hooks/useDmCallStart.ts

@@ -0,0 +1,24 @@
+import { useCallback } from 'react';
+import { useAtomValue } from 'jotai';
+import { useMatrixClient } from './useMatrixClient';
+import { useCallStart } from './useCallEmbed';
+import { useCallPreferencesAtom } from '../state/hooks/callPreferences';
+
+export const useDmCallStart = () => {
+  const mx = useMatrixClient();
+  const startCall = useCallStart(true, true);
+  const callPref = useAtomValue(useCallPreferencesAtom());
+
+  return useCallback(
+    (roomId: string) => {
+      const room = mx.getRoom(roomId);
+      if (!room) {
+        // eslint-disable-next-line no-console
+        console.warn('[dm-call] room not found', roomId);
+        return;
+      }
+      startCall(room, callPref);
+    },
+    [mx, startCall, callPref]
+  );
+};

src/app/pages/CallStatusRenderer.tsx

@@ -12,7 +12,12 @@ export function CallStatusRenderer() {
 
   if (!callEmbed) return null;
 
-  if (screenSize === ScreenSize.Mobile && callEmbed.roomId === selectedRoom) return null;
+  if (
+    screenSize === ScreenSize.Mobile &&
+    callEmbed.roomId === selectedRoom &&
+    !callEmbed.voiceOnly
+  )
+    return null;
 
   return <CallStatus callEmbed={callEmbed} />;
 }

src/app/plugins/call/CallEmbed.ts

@@ -37,6 +37,8 @@ export class CallEmbed {
 
   public joined = false;
 
+  public readonly voiceOnly: boolean;
+
   public readonly control: CallControl;
 
   private readonly container: HTMLElement;
@@ -55,12 +57,18 @@ export class CallEmbed {
 
   private readonly boundOnToDeviceEvent = this.onToDeviceEvent.bind(this);
 
-  static getIntent(dm: boolean, ongoing: boolean): ElementCallIntent {
+  static getIntent(dm: boolean, ongoing: boolean, voiceOnly = false): ElementCallIntent {
     if (ongoing) {
-      return dm ? ElementCallIntent.JoinExistingDM : ElementCallIntent.JoinExisting;
+      if (dm) {
+        return voiceOnly ? ElementCallIntent.JoinExistingDMVoice : ElementCallIntent.JoinExistingDM;
+      }
+      return ElementCallIntent.JoinExisting;
     }
 
-    return dm ? ElementCallIntent.StartCallDM : ElementCallIntent.StartCall;
+    if (dm) {
+      return voiceOnly ? ElementCallIntent.StartCallDMVoice : ElementCallIntent.StartCallDM;
+    }
+    return ElementCallIntent.StartCall;
   }
 
   static getWidget(
@@ -133,7 +141,8 @@ export class CallEmbed {
     room: Room,
     widget: Widget,
     container: HTMLElement,
-    initialControlState?: CallControlState
+    initialControlState?: CallControlState,
+    voiceOnly = false
   ) {
     const iframe = CallEmbed.getIframe(
       widget.getCompleteUrl({ currentUserId: mx.getSafeUserId() })
@@ -148,6 +157,7 @@ export class CallEmbed {
     this.room = room;
     this.iframe = iframe;
     this.container = container;
+    this.voiceOnly = voiceOnly;
 
     const controlState = initialControlState ?? new CallControlState(true, false, true);
     this.control = new CallControl(controlState, call, iframe);