When deleting a voice broadcast, also delete related events (#9737)

src/voice-broadcast/index.ts

@@ -48,6 +48,7 @@ export * from "./utils/doMaybeSetCurrentVoiceBroadcastPlayback";
 export * from "./utils/getChunkLength";
 export * from "./utils/getMaxBroadcastLength";
 export * from "./utils/hasRoomLiveVoiceBroadcast";
+export * from "./utils/isVoiceBroadcastStartedEvent";
 export * from "./utils/findRoomLiveVoiceBroadcastFromUserAndDevice";
 export * from "./utils/retrieveStartedInfoEvent";
 export * from "./utils/shouldDisplayAsVoiceBroadcastRecordingTile";

src/voice-broadcast/utils/isVoiceBroadcastStartedEvent.ts

@@ -0,0 +1,25 @@
+/*
+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 { MatrixEvent } from "matrix-js-sdk/src/matrix";
+
+import { VoiceBroadcastInfoEventType, VoiceBroadcastInfoState } from "../types";
+
+export const isVoiceBroadcastStartedEvent = (event: MatrixEvent): boolean => {
+    return (
+        event.getType() === VoiceBroadcastInfoEventType && event.getContent()?.state === VoiceBroadcastInfoState.Started
+    );
+};