Load focus information from well known and use client config only as a fallback. (#2358)

* Load focus information from well known and use client config only as a fallback.

Signed-off-by: Timo K <toger5@hotmail.de>
Co-authored-by: Andrew Ferrazzutti <andrewf@element.io>

test/rtcSessionHelper-test.ts

@@ -0,0 +1,93 @@
+/*
+Copyright 2024 New Vector Ltd
+
+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 { MatrixRTCSession } from "matrix-js-sdk/src/matrixrtc/MatrixRTCSession";
+
+import { enterRTCSession } from "../src/rtcSessionHelpers";
+import { Config } from "../src/config/Config";
+
+test("It joins the correct Session", async () => {
+  const focusFromOlderMembership = {
+    type: "livekit",
+    livekit_service_url: "http://my-oldest-member-service-url.com",
+    livekit_alias: "my-oldest-member-service-alias",
+  };
+
+  const focusConfigFromWellKnown = {
+    type: "livekit",
+    livekit_service_url: "http://my-well-known-service-url.com",
+  };
+  const focusConfigFromWellKnown2 = {
+    type: "livekit",
+    livekit_service_url: "http://my-well-known-service-url2.com",
+  };
+  const clientWellKnown = {
+    "org.matrix.msc4143.rtc_foci": [
+      focusConfigFromWellKnown,
+      focusConfigFromWellKnown2,
+    ],
+  };
+
+  vi.spyOn(Config, "get").mockReturnValue({
+    livekit: { livekit_service_url: "http://my-default-service-url.com" },
+    eula: "",
+  });
+  const mockedSession = vi.mocked({
+    room: {
+      roomId: "roomId",
+      client: {
+        getClientWellKnown: vi.fn().mockReturnValue(clientWellKnown),
+      },
+    },
+    memberships: [],
+    getFocusInUse: vi.fn().mockReturnValue(focusFromOlderMembership),
+    getOldestMembership: vi.fn().mockReturnValue({
+      getPreferredFoci: vi.fn().mockReturnValue([focusFromOlderMembership]),
+    }),
+    joinRoomSession: vi.fn(),
+  }) as unknown as MatrixRTCSession;
+  await enterRTCSession(mockedSession, false);
+
+  expect(mockedSession.joinRoomSession).toHaveBeenLastCalledWith(
+    [
+      {
+        livekit_alias: "my-oldest-member-service-alias",
+        livekit_service_url: "http://my-oldest-member-service-url.com",
+        type: "livekit",
+      },
+      {
+        livekit_alias: "roomId",
+        livekit_service_url: "http://my-well-known-service-url.com",
+        type: "livekit",
+      },
+      {
+        livekit_alias: "roomId",
+        livekit_service_url: "http://my-well-known-service-url2.com",
+        type: "livekit",
+      },
+      {
+        livekit_alias: "roomId",
+        livekit_service_url: "http://my-default-service-url.com",
+        type: "livekit",
+      },
+    ],
+    {
+      focus_selection: "oldest_membership",
+      type: "livekit",
+    },
+    { manageMediaKeys: false },
+  );
+});