Extract requestMediaPermissions (#9568)

src/utils/media/requestMediaPermissions.tsx

@@ -0,0 +1,59 @@
+/*
+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 { logger } from "matrix-js-sdk/src/logger";
+
+import ErrorDialog from "../../components/views/dialogs/ErrorDialog";
+import { _t } from "../../languageHandler";
+import Modal from "../../Modal";
+import SdkConfig from "../../SdkConfig";
+
+export const requestMediaPermissions = async (video = true): Promise<MediaStream | undefined> => {
+    let stream: MediaStream | undefined;
+    let error: any;
+
+    try {
+        stream = await navigator.mediaDevices.getUserMedia({
+            audio: true,
+            video,
+        });
+    } catch (err: any) {
+        // user likely doesn't have a webcam,
+        // we should still allow to select a microphone
+        if (video && err.name === "NotFoundError") {
+            try {
+                stream = await navigator.mediaDevices.getUserMedia({ audio: true });
+            } catch (err) {
+                error = err;
+            }
+        } else {
+            error = err;
+        }
+    }
+    if (error) {
+        logger.log("Failed to list userMedia devices", error);
+        const brand = SdkConfig.get().brand;
+        Modal.createDialog(ErrorDialog, {
+            title: _t('No media permissions'),
+            description: _t(
+                'You may need to manually permit %(brand)s to access your microphone/webcam',
+                { brand },
+            ),
+        });
+    }
+
+    return stream;
+};