async initializeMeetingSession()

in src/providers/MeetingProvider/MeetingManager.ts [273:339]
52 lines of code
7 McCabe index (conditional complexity)

  async initializeMeetingSession(
    configuration: MeetingSessionConfiguration,
    deviceLabels: DeviceLabels | DeviceLabelTrigger = DeviceLabels.AudioAndVideo
  ): Promise<any> {
    const {
      simulcastEnabled,
      enableWebAudio,
      logger: configLogger,
      videoUplinkBandwidthPolicy,
      videoDownlinkBandwidthPolicy,
      reconnectTimeoutMs,
      keepLastFrameWhenPaused,
    } = this.meetingManagerConfig;

    // We are assigning the values from the `meetingManagerConfig` to preserve backward compatibility.
    // Please use `this.meetingManagerConfig` for any values going forward.
    if (simulcastEnabled) {
      configuration.enableUnifiedPlanForChromiumBasedBrowsers = true;
      configuration.enableSimulcastForUnifiedPlanChromiumBasedBrowsers = true;
    }
    const logger = configLogger
      ? configLogger
      : this.createLogger(configuration);

    if (videoUplinkBandwidthPolicy) {
      configuration.videoUplinkBandwidthPolicy = videoUplinkBandwidthPolicy;
    }

    if (videoDownlinkBandwidthPolicy) {
      configuration.videoDownlinkBandwidthPolicy = videoDownlinkBandwidthPolicy;
    }

    if (reconnectTimeoutMs) {
      configuration.reconnectTimeoutMs = reconnectTimeoutMs;
    }

    if (keepLastFrameWhenPaused) {
      configuration.keepLastFrameWhenPaused = keepLastFrameWhenPaused;
    }

    const deviceController = new DefaultDeviceController(logger, {
      enableWebAudio,
    });
    this.meetingSession = new DefaultMeetingSession(
      configuration,
      logger,
      deviceController,
      this.eventReporter
    );

    this.audioVideo = this.meetingSession.audioVideo;

    // When an attendee leaves, we remove AudioVideoObservers and nullify AudioVideoFacade and MeetingSession object.
    // This results into missing few meeting events triggered with audioVideoDidStop such as meetingEnded, meetingFailed and meetingStartFailed.
    // We may also loose audioInputUnselected and videoInputUnselected events as we choose null devices when an attendee leaves.
    // When a new AudioVideoFacade object is created remove and re-add the eventDidReceive observer which wont leak.
    this.audioVideo.removeObserver(this.eventDidReceiveRef);
    this.audioVideo.addObserver(this.eventDidReceiveRef);

    this.setupAudioVideoObservers();
    this.setupDeviceLabelTrigger(deviceLabels);
    await this.listAndSelectDevices(deviceLabels);
    this.publishAudioVideo();
    this.setupActiveSpeakerDetection();
    this.meetingStatus = MeetingStatus.Loading;
    this.publishMeetingStatus();
  }