Transform CallProvider into 'CallManager' hook, review WebSocket messages for calls

- These changes allowed to remove more cascading effects. It is now possible to reactivate StrictMode. Downside is we lost the 'optional context' of CallProvider: the call logic will be loaded even if there is no call.
- The WebSocket messages have been changed so the client does not have to know the conversation members before a call. Previously, the client had to fetch the conversation members for a call, which was causing cascading effects.
- Accidentally, moving the handling of conversation members to the server added some logic for calls with more than two participants, but it is still not ready to work.

* CallProvider.tsx will be renamed in next commit in order to make it easier to track its file history

Change-Id: Iae711009adafce065ac3defc1c91c7ca0f37898c
diff --git a/client/src/components/CallButtons.tsx b/client/src/components/CallButtons.tsx
index d853cc1..0ee463e 100644
--- a/client/src/components/CallButtons.tsx
+++ b/client/src/components/CallButtons.tsx
@@ -20,7 +20,8 @@
 import { styled } from '@mui/material/styles';
 import { ChangeEvent, useMemo } from 'react';
 
-import { CallStatus, useCallContext, VideoStatus } from '../contexts/CallProvider';
+import { useCallManagerContext } from '../contexts/CallManagerProvider';
+import { CallStatus, VideoStatus } from '../contexts/CallProvider';
 import { useUserMediaContext } from '../contexts/UserMediaProvider';
 import {
   ColoredRoundButton,
@@ -58,7 +59,7 @@
 });
 
 export const CallingChatButton = (props: ExpandableButtonProps) => {
-  const { setIsChatShown } = useCallContext();
+  const { setIsChatShown } = useCallManagerContext();
   return (
     <CallButton
       aria-label="chat"
@@ -72,7 +73,7 @@
 };
 
 export const CallingEndButton = (props: ExpandableButtonProps) => {
-  const { endCall } = useCallContext();
+  const { endCall } = useCallManagerContext();
   return (
     <ColoredRoundButton
       paletteColor={(theme) => theme.palette.error}
@@ -91,7 +92,7 @@
 };
 
 export const CallingFullScreenButton = (props: ExpandableButtonProps) => {
-  const { setIsFullscreen } = useCallContext();
+  const { setIsFullscreen } = useCallManagerContext();
   return (
     <CallButton
       aria-label="full screen"
@@ -123,7 +124,7 @@
 };
 
 const ToggleScreenShareIconButton = (props: IconButtonProps) => {
-  const { videoStatus, updateVideoStatus } = useCallContext();
+  const { videoStatus, updateVideoStatus } = useCallManagerContext();
 
   return (
     <ToggleIconButton
@@ -194,7 +195,7 @@
 };
 
 const ToggleAudioCameraIconButton = (props: IconButtonProps) => {
-  const { isAudioOn, setIsAudioOn } = useCallContext();
+  const { isAudioOn, setIsAudioOn } = useCallManagerContext();
   return (
     <ToggleIconButton
       IconOn={MicroIcon}
@@ -220,7 +221,7 @@
 };
 
 const ToggleVideoCameraIconButton = (props: IconButtonProps) => {
-  const { videoStatus, updateVideoStatus } = useCallContext();
+  const { videoStatus, updateVideoStatus } = useCallManagerContext();
   return (
     <ToggleIconButton
       IconOn={VideoCameraIcon}
@@ -236,7 +237,7 @@
 
 // Calling pending/receiving interface
 export const CallingCancelButton = (props: IconButtonProps) => {
-  const { endCall } = useCallContext();
+  const { endCall } = useCallManagerContext();
 
   return (
     <ColoredRoundButton
@@ -252,7 +253,7 @@
 };
 
 export const CallingAnswerAudioButton = (props: IconButtonProps) => {
-  const { acceptCall, callStatus } = useCallContext();
+  const { acceptCall, callStatus } = useCallManagerContext();
 
   return (
     <ColoredRoundButton
@@ -269,7 +270,7 @@
 };
 
 export const CallingAnswerVideoButton = (props: IconButtonProps) => {
-  const { acceptCall, callStatus } = useCallContext();
+  const { acceptCall, callStatus } = useCallManagerContext();
   return (
     <ColoredRoundButton
       disabled={callStatus === CallStatus.Connecting || callStatus === CallStatus.Loading}
@@ -285,7 +286,7 @@
 };
 
 export const CallingRefuseButton = (props: IconButtonProps) => {
-  const { endCall } = useCallContext();
+  const { endCall } = useCallManagerContext();
   return (
     <ColoredRoundButton
       aria-label="refuse call"
diff --git a/client/src/components/CallChatDrawer.tsx b/client/src/components/CallChatDrawer.tsx
index d094554..4a58393 100644
--- a/client/src/components/CallChatDrawer.tsx
+++ b/client/src/components/CallChatDrawer.tsx
@@ -17,7 +17,7 @@
  */
 import { Divider, Stack, Typography } from '@mui/material';
 
-import { useCallContext } from '../contexts/CallProvider';
+import { useCallManagerContext } from '../contexts/CallManagerProvider';
 import { useConversationContext } from '../contexts/ConversationProvider';
 import ChatInterface from '../pages/ChatInterface';
 import { CloseButton } from './Button';
@@ -43,7 +43,7 @@
 };
 
 const CallChatDrawerHeader = () => {
-  const { setIsChatShown } = useCallContext();
+  const { setIsChatShown } = useCallManagerContext();
   const { conversationDisplayName } = useConversationContext();
 
   return (
diff --git a/client/src/components/ConversationSummaryList.tsx b/client/src/components/ConversationSummaryList.tsx
index f8e3d22..c50a5f9 100644
--- a/client/src/components/ConversationSummaryList.tsx
+++ b/client/src/components/ConversationSummaryList.tsx
@@ -19,13 +19,13 @@
 import dayjs from 'dayjs';
 import { IConversationSummary } from 'jami-web-common';
 import { QRCodeCanvas } from 'qrcode.react';
-import { useCallback, useContext, useMemo, useState } from 'react';
+import { useCallback, useMemo, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { useNavigate } from 'react-router-dom';
 
 import { useAuthContext } from '../contexts/AuthProvider';
-import { CallManagerContext } from '../contexts/CallManagerProvider';
-import { CallStatus, useCallContext } from '../contexts/CallProvider';
+import { useCallManagerContext } from '../contexts/CallManagerProvider';
+import { CallStatus } from '../contexts/CallProvider';
 import { useConversationDisplayNameShort } from '../hooks/useConversationDisplayName';
 import { useUrlParams } from '../hooks/useUrlParams';
 import { ConversationRouteParams } from '../router';
@@ -108,8 +108,7 @@
 
 const SecondaryText = ({ conversationSummary, isSelected }: SecondaryTextProps) => {
   const { account } = useAuthContext();
-  const callContext = useCallContext(true);
-  const { callData } = useContext(CallManagerContext);
+  const { callData, callStatus, isAudioOn } = useCallManagerContext();
   const { t, i18n } = useTranslation();
 
   const timeIndicator = useMemo(() => {
@@ -123,7 +122,7 @@
   }, [conversationSummary, i18n]);
 
   const lastMessageText = useMemo(() => {
-    if (!callContext || !callData || callData.conversationId !== conversationSummary.id) {
+    if (!callData || callData.conversationId !== conversationSummary.id) {
       const message = conversationSummary.lastMessage;
       switch (message.type) {
         case 'initial': {
@@ -149,16 +148,16 @@
       }
     }
 
-    if (callContext.callStatus === CallStatus.InCall) {
-      return callContext.isAudioOn ? t('ongoing_call_unmuted') : t('ongoing_call_muted');
+    if (callStatus === CallStatus.InCall) {
+      return isAudioOn ? t('ongoing_call_unmuted') : t('ongoing_call_muted');
     }
 
-    if (callContext.callStatus === CallStatus.Connecting) {
+    if (callStatus === CallStatus.Connecting) {
       return t('connecting_call');
     }
 
-    return callContext.callRole === 'caller' ? t('outgoing_call') : t('incoming_call');
-  }, [account, conversationSummary, callContext, callData, t, i18n]);
+    return callData.role === 'caller' ? t('outgoing_call') : t('incoming_call');
+  }, [account, conversationSummary, callData, callStatus, isAudioOn, t, i18n]);
 
   return (
     <Stack direction="row" spacing="5px">
@@ -186,7 +185,7 @@
   contextMenuProps,
 }: ConversationMenuProps) => {
   const { t } = useTranslation();
-  const { startCall } = useContext(CallManagerContext);
+  const { startCall } = useCallManagerContext();
   const [isSwarm] = useState(true);
 
   const detailsDialogHandler = useDialogHandler();
@@ -206,10 +205,7 @@
         Icon: AudioCallIcon,
         onClick: () => {
           if (conversationId) {
-            startCall({
-              conversationId,
-              role: 'caller',
-            });
+            startCall(conversationId);
           }
         },
       },
@@ -218,11 +214,7 @@
         Icon: VideoCallIcon,
         onClick: () => {
           if (conversationId) {
-            startCall({
-              conversationId,
-              role: 'caller',
-              withVideoOn: true,
-            });
+            startCall(conversationId, true);
           }
         },
       },
diff --git a/client/src/components/ConversationView.tsx b/client/src/components/ConversationView.tsx
index 5f76add..b636ec3 100644
--- a/client/src/components/ConversationView.tsx
+++ b/client/src/components/ConversationView.tsx
@@ -16,10 +16,8 @@
  * <https://www.gnu.org/licenses/>.
  */
 import { Divider, Stack, Typography } from '@mui/material';
-import { useContext } from 'react';
 
-import { CallManagerContext } from '../contexts/CallManagerProvider';
-import { useCallContext } from '../contexts/CallProvider';
+import { useCallManagerContext } from '../contexts/CallManagerProvider';
 import { useConversationContext } from '../contexts/ConversationProvider';
 import CallInterface from '../pages/CallInterface';
 import ChatInterface from '../pages/ChatInterface';
@@ -27,10 +25,9 @@
 
 const ConversationView = () => {
   const { conversationId } = useConversationContext();
-  const callContext = useCallContext(true);
-  const { callData } = useContext(CallManagerContext);
+  const { callData } = useCallManagerContext();
 
-  if (callContext && callData?.conversationId === conversationId) {
+  if (callData?.conversationId === conversationId) {
     return <CallInterface />;
   }
 
@@ -49,7 +46,7 @@
 
 const ConversationHeader = () => {
   const { conversationId, conversationDisplayName } = useConversationContext();
-  const { startCall } = useContext(CallManagerContext);
+  const { startCall } = useCallManagerContext();
 
   return (
     <Stack direction="row" padding="16px" overflow="hidden">
@@ -59,8 +56,8 @@
         </Typography>
       </Stack>
       <Stack direction="row" spacing="20px">
-        <StartAudioCallButton onClick={() => startCall({ conversationId, role: 'caller' })} />
-        <StartVideoCallButton onClick={() => startCall({ conversationId, role: 'caller', withVideoOn: true })} />
+        <StartAudioCallButton onClick={() => startCall(conversationId)} />
+        <StartVideoCallButton onClick={() => startCall(conversationId, true)} />
         <AddParticipantButton />
         <ShowOptionsMenuButton />
       </Stack>
diff --git a/client/src/components/VideoOverlay.tsx b/client/src/components/VideoOverlay.tsx
index 9307f9b..2093840 100644
--- a/client/src/components/VideoOverlay.tsx
+++ b/client/src/components/VideoOverlay.tsx
@@ -20,7 +20,7 @@
 import Draggable, { DraggableEventHandler } from 'react-draggable';
 import { useNavigate } from 'react-router-dom';
 
-import { useCallContext } from '../contexts/CallProvider';
+import { useCallManagerContext } from '../contexts/CallManagerProvider';
 import { useUserMediaContext } from '../contexts/UserMediaProvider';
 import { VideoElementWithSinkId } from '../utils/utils';
 import VideoStream, { VideoStreamProps } from './VideoStream';
@@ -75,7 +75,7 @@
 };
 
 export const RemoteVideoOverlay = ({ callConversationId }: { callConversationId: string }) => {
-  const { remoteStreams } = useCallContext();
+  const { remoteStreams } = useCallManagerContext();
   const {
     currentMediaDeviceIds: {
       audiooutput: { id: audioOutDeviceId },