Fix initialization for standalone client (#497)

standalone/src/init.ts

@@ -141,7 +141,8 @@ async function fetchChannelData(store: Store, channelID: string) {
     );
 
     if (!resp.call) {
-        throw new Error('call missing from response');
+        // This is expected if the client is starting the call.
+        return;
     }
 
     store.dispatch({
@@ -353,7 +354,13 @@ export default async function init(cfg: InitConfig) {
     const theme = getTheme(store.getState());
     applyTheme(theme);
 
-    await cfg.initCb(store, theme, channelID);
+    try {
+        await cfg.initCb(store, theme, channelID);
+    } catch (err) {
+        logErr('initCb failed', err);
+        window.callsClient?.destroy();
+        return;
+    }
 
     logDebug(`${cfg.name} init completed in ${Math.round(performance.now() - initStartTime)}ms`);
 }

standalone/src/recording/index.tsx

@@ -8,7 +8,7 @@ import {Theme} from 'mattermost-redux/types/themes';
 import {getCurrentUserId} from 'mattermost-webapp/packages/mattermost-redux/src/selectors/entities/users';
 import {logErr} from 'plugin/log';
 import {pluginId} from 'plugin/manifest';
-import {voiceConnectedProfilesInChannel} from 'plugin/selectors';
+import {voiceConnectedProfilesInChannel, voiceChannelCallStartAt} from 'plugin/selectors';
 import {Store} from 'plugin/types/mattermost-webapp';
 import {getProfilesByIds, getPluginPath, fetchTranslationsFile, setCallsGlobalCSSVars} from 'plugin/utils';
 import React from 'react';
@@ -71,6 +71,10 @@ async function initRecordingStore(store: Store, channelID: string) {
 }
 
 async function initRecording(store: Store, theme: Theme, channelID: string) {
+    if (!voiceChannelCallStartAt(store.getState(), channelID)) {
+        throw new Error('call is missing from store');
+    }
+
     await store.dispatch({
         type: VOICE_CHANNEL_USER_CONNECTED,
         data: {