Stop reading URL parameters from inside the call path

The view models reached for getUrlParams() — and so window.location —
from deep inside the call path: CallViewModel, MediaDevices, Publisher,
LocalMember and the footer view model. An embedded Element Call has no URL
of its own, so these values have to arrive as arguments instead.

Add the relevant options to CallViewModelOptions, to the MediaDevices and
Publisher constructors, to createLocalMembership$ and enterRTCSession, and
to createCallFooterViewModel. The remaining React consumers read the
context added in the previous commit. AppViewModel now takes its audio
output options too, moving that URL read out to main.tsx, where the app
shell can act as the adapter.

The new CallViewModelOptions fields are optional, defaulting to what the
URL parameters resolve to outside widget mode; the MediaDevices and
Publisher arguments are required, so that every construction site has to
be explicit.

useTheme.test.ts mocked the UrlParams module with a factory, so it needed
updating to mock the hook rather than getUrlParams.

No functional change.

src/state/CallViewModel/localMember/LocalMember.ts

@@ -20,6 +20,8 @@ import {
   type LivekitTransport,
   type LivekitTransportConfig,
   type MatrixRTCSession,
+  type RTCCallIntent,
+  type RTCNotificationType,
 } from "matrix-js-sdk/lib/matrixrtc";
 import {
   BehaviorSubject,
@@ -52,7 +54,7 @@ import {
   UnknownCallError,
 } from "../../../utils/errors.ts";
 import { ElementWidgetActions, widget } from "../../../widget.ts";
-import { getUrlParams } from "../../../UrlParams.ts";
+
 import { PosthogAnalytics } from "../../../analytics/PosthogAnalytics.ts";
 import {
   advancedScreenShare,
@@ -141,6 +143,8 @@ interface Props {
     MatrixRTCSession,
     "updateCallIntent" | "leaveRoomSession"
   >;
+  /** Whether to hide the screen-sharing button. */
+  hideScreensharing: boolean;
   logger: Logger;
 }
 
@@ -160,6 +164,7 @@ interface Props {
  * @param props.muteStates The mute states for video and audio.
  * @param props.matrixRTCSession The matrix RTC session to join.
  * @param props.roomId The room ID used as the call identifier in analytics events.
+ * @param props.hideScreensharing Whether to hide the screen-sharing button.
  * @returns
  *  - publisher: The handle to create tracks and publish them to the room.
  *  - connected$: the current connection state. Including matrix server and livekit server connection. (only considering the livekit server we are using for our own media publication)
@@ -178,6 +183,7 @@ export const createLocalMembership$ = ({
   muteStates,
   matrixRTCSession,
   roomId,
+  hideScreensharing,
 }: Props): {
   /**
    * This request to start audio and video tracks.
@@ -709,7 +715,7 @@ export const createLocalMembership$ = ({
   let toggleScreenSharing: (() => void) | null = null;
   if (
     "getDisplayMedia" in (navigator.mediaDevices ?? {}) &&
-    !getUrlParams().hideScreensharing
+    !hideScreensharing
   ) {
     toggleScreenSharing = (): void => {
       const screenshareSettings: ScreenShareCaptureOptions = {
@@ -820,6 +826,10 @@ export function observeSharingScreen$(p: Participant): Observable<boolean> {
 interface EnterRTCSessionOptions {
   encryptMedia: boolean;
   matrixRTCMode: MatrixRTCMode;
+  /** Whether and what kind of notification to send when joining. */
+  sendNotificationType?: RTCNotificationType;
+  /** The kind of call being placed. */
+  callIntent?: RTCCallIntent;
 }
 
 /**
@@ -832,7 +842,9 @@ interface EnterRTCSessionOptions {
  * @param rtcSession - The MatrixRTCSession to join.
  * @param ownMembershipIdentity - Options for entering the RTC session.
  * @param transport - The LivekitTransport to use for this session.
- * @param options - `encryptMedia`: Whether to encrypt media `matrixRTCMode`: The Matrix RTC mode to use.
+ * @param options - `encryptMedia`: Whether to encrypt media. `matrixRTCMode`: The
+ *   Matrix RTC mode to use. `sendNotificationType`: Whether and what kind of
+ *   notification to send on join. `callIntent`: The kind of call being placed.
  * @throws If the widget could not send ElementWidgetActions.JoinCall action.
  */
 // Exported for unit testing
@@ -842,7 +854,12 @@ export function enterRTCSession(
   transport: LivekitTransportConfig,
   options: EnterRTCSessionOptions,
 ): void {
-  const { encryptMedia, matrixRTCMode } = options;
+  const {
+    encryptMedia,
+    matrixRTCMode,
+    sendNotificationType: notificationType,
+    callIntent,
+  } = options;
   PosthogAnalytics.instance.eventCallEnded.cacheStartCall(new Date());
   PosthogAnalytics.instance.eventCallStarted.track(rtcSession.room.roomId);
 
@@ -851,7 +868,6 @@ export function enterRTCSession(
   // groupCallOTelMembership?.onJoinCall();
 
   const { matrix_rtc_session: matrixRtcSessionConfig } = Config.get();
-  const { sendNotificationType: notificationType, callIntent } = getUrlParams();
   const multiSFU =
     matrixRTCMode === MatrixRTCMode.Compatibility ||
     matrixRTCMode === MatrixRTCMode.Matrix_2_0;