enumerateDevices method

Implementation

Future<List<DeviceDetails>> enumerateDevices([MediaDeviceKind? kind]) async {
  final List<DeviceDetails> devices =
      (await (await _mediaManager)?.enumerateDevices() ?? [])
          .where((e) => e.deviceId().isNotEmpty)
          .where((e) => kind == null || e.kind() == kind)
          .whereType<MediaDeviceDetails>()
          .map((e) => DeviceDetails(e))
          .toList();

  // Add the [DefaultMediaDeviceDetails] to the retrieved list of devices.
  //
  // Browsers and mobiles already may include their own default devices.
  if (kind == null || kind == MediaDeviceKind.audioInput) {
    final DeviceDetails? hasDefault = devices.firstWhereOrNull(
      (d) =>
          d.kind() == MediaDeviceKind.audioInput && d.deviceId() == 'default',
    );

    if (hasDefault == null) {
      final DeviceDetails? device = devices.firstWhereOrNull(
        (e) => e.kind() == MediaDeviceKind.audioInput,
      );
      if (device != null) {
        devices.insert(0, DefaultDeviceDetails(device));
      }
    } else {
      // Audio input on mobile devices is handled by `medea_jason`, and we
      // should not interfere, as otherwise we may run into
      // [MediaSettingsUpdateException].
      if (PlatformUtils.isMobile && !PlatformUtils.isWeb) {
        devices.remove(hasDefault);
      }
    }
  }

  if (kind == null || kind == MediaDeviceKind.audioOutput) {
    final bool hasDefault = devices.any(
      (d) =>
          d.kind() == MediaDeviceKind.audioOutput &&
          d.deviceId() == 'default',
    );

    if (!hasDefault) {
      final DeviceDetails? device = devices.firstWhereOrNull(
        (e) => e.kind() == MediaDeviceKind.audioOutput,
      );
      if (device != null) {
        devices.insert(0, DefaultDeviceDetails(device));
      }
    }
  }

  return devices;
}