async listAndSelectDevices()

in src/providers/MeetingProvider/MeetingManager.ts [519:593]
69 lines of code
21 McCabe index (conditional complexity)

  async listAndSelectDevices(
    deviceLabels: DeviceLabels | DeviceLabelTrigger = DeviceLabels.AudioAndVideo
  ): Promise<void> {
    await this.updateDeviceLists();

    // If `deviceLabels` is of `DeviceLabelTrigger` type, no device will be selected.
    // In this case, you need to handle the device selection yourself.
    if (typeof deviceLabels === 'function') return;

    let isAudioDeviceRequested: boolean = false;
    let isVideoDeviceRequested: boolean = false;

    switch (deviceLabels) {
      case DeviceLabels.None:
        break;
      case DeviceLabels.Audio:
        isAudioDeviceRequested = true;
        break;
      case DeviceLabels.Video:
        isVideoDeviceRequested = true;
        break;
      case DeviceLabels.AudioAndVideo:
        isAudioDeviceRequested = true;
        isVideoDeviceRequested = true;
        break;
    }

    if (
      isAudioDeviceRequested &&
      !this.selectedAudioInputDevice &&
      this.audioInputDevices &&
      this.audioInputDevices.length
    ) {
      this.selectedAudioInputDevice = this.audioInputDevices[0].deviceId;
      this.selectedAudioInputTransformDevice = this.selectedAudioInputDevice;
      try {
        await this.audioVideo?.chooseAudioInputDevice(
          this.audioInputDevices[0].deviceId
        );
      } catch (error) {
        console.error(`Error in selecting audio input device - ${error}`);
      }
      this.publishSelectedAudioInputDevice();
      this.publishSelectedAudioInputTransformDevice();
    }
    if (
      isAudioDeviceRequested &&
      !this.selectedAudioOutputDevice &&
      this.audioOutputDevices &&
      this.audioOutputDevices.length
    ) {
      this.selectedAudioOutputDevice = this.audioOutputDevices[0].deviceId;
      if (supportsSetSinkId()) {
        try {
          await this.audioVideo?.chooseAudioOutputDevice(
            this.audioOutputDevices[0].deviceId
          );
        } catch (error) {
          console.error('Failed to choose audio output device.', error);
        }
      }
      this.publishSelectedAudioOutputDevice();
    }
    if (
      isVideoDeviceRequested &&
      !this.selectedVideoInputDevice &&
      this.videoInputDevices &&
      this.videoInputDevices.length
    ) {
      this.selectedVideoInputDevice = this.videoInputDevices[0].deviceId;
      this.selectedVideoInputTransformDevice = this.selectedVideoInputDevice;
      this.publishSelectedVideoInputDevice();
      this.publishSelectedVideoInputTransformDevice();
    }
  }