Show a lobby screen in video rooms (#8287)

* Show a lobby screen in video rooms

* Add connecting state

* Test VideoRoomView

* Test VideoLobby

* Get the local video stream with useAsyncMemo

* Clean up code review nits

* Explicitly state what !important is overriding

* Use spacing variables

* Wait for video channel messaging

* Update join button copy

* Show frame on both the lobby and widget

* Force dark theme for video lobby

* Wait for the widget to be ready

* Make VideoChannelStore constructor private

* Allow video lobby to shrink

* Add invite button to video room header

* Show connected members on lobby screen

* Make avatars in video lobby clickable

* Increase video channel store timeout

* Fix Jitsi Meet getting wedged on startup in Chrome and Safari

* Revert "Fix Jitsi Meet getting wedged on startup in Chrome and Safari"

This reverts commit 9f77b8c227.

* Disable device buttons while connecting

* Factor RoomFacePile into a separate file

* Fix i18n lint

* Fix switching video channels while connected

* Properly limit number of connected members in face pile

* Fix CSS lint

test/components/structures/VideoRoomView-test.tsx

@@ -0,0 +1,78 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from "react";
+import { mount } from "enzyme";
+import { act } from "react-dom/test-utils";
+import { MatrixWidgetType } from "matrix-widget-api";
+
+import { stubClient, stubVideoChannelStore, mkRoom, wrapInMatrixClientContext } from "../../test-utils";
+import { MatrixClientPeg } from "../../../src/MatrixClientPeg";
+import { VIDEO_CHANNEL } from "../../../src/utils/VideoChannelUtils";
+import WidgetStore from "../../../src/stores/WidgetStore";
+import _VideoRoomView from "../../../src/components/structures/VideoRoomView";
+import VideoLobby from "../../../src/components/views/voip/VideoLobby";
+import AppTile from "../../../src/components/views/elements/AppTile";
+
+const VideoRoomView = wrapInMatrixClientContext(_VideoRoomView);
+
+describe("VideoRoomView", () => {
+    stubClient();
+    jest.spyOn(WidgetStore.instance, "getApps").mockReturnValue([{
+        id: VIDEO_CHANNEL,
+        eventId: "$1:example.org",
+        roomId: "!1:example.org",
+        type: MatrixWidgetType.JitsiMeet,
+        url: "https://example.org",
+        name: "Video channel",
+        creatorUserId: "@alice:example.org",
+        avatar_url: null,
+    }]);
+    Object.defineProperty(navigator, "mediaDevices", {
+        value: { enumerateDevices: () => [] },
+    });
+
+    const cli = MatrixClientPeg.get();
+    const room = mkRoom(cli, "!1:example.org");
+
+    let store;
+    beforeEach(() => {
+        store = stubVideoChannelStore();
+    });
+
+    afterEach(() => {
+        jest.clearAllMocks();
+    });
+
+    it("shows lobby and keeps widget loaded when disconnected", async () => {
+        const view = mount(<VideoRoomView room={room} resizing={false} />);
+        // Wait for state to settle
+        await act(async () => Promise.resolve());
+
+        expect(view.find(VideoLobby).exists()).toEqual(true);
+        expect(view.find(AppTile).exists()).toEqual(true);
+    });
+
+    it("only shows widget when connected", async () => {
+        store.connect("!1:example.org");
+        const view = mount(<VideoRoomView room={room} resizing={false} />);
+        // Wait for state to settle
+        await act(async () => Promise.resolve());
+
+        expect(view.find(VideoLobby).exists()).toEqual(false);
+        expect(view.find(AppTile).exists()).toEqual(true);
+    });
+});