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) => !e.isFailed())
          .where((e) => kind == null || e.kind() == kind)
          .whereType<MediaDeviceDetails>()
          .map(DeviceDetails.new)
          .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.id() == 'default',
    );

    if (hasDefault == null) {
      if (PlatformUtils.isDesktop || PlatformUtils.isWeb) {
        final DeviceDetails? device = devices.firstWhereOrNull(
          (e) => e.kind() == MediaDeviceKind.audioInput,
        );

        if (device != null) {
          devices.insert(0, DefaultDeviceDetails(device));
        }
      }
    } else {
      // Sort the default device to the top, as it might be somewhere else.
      if (PlatformUtils.isWeb) {
        devices.removeWhere(
          (e) =>
              e.kind() == MediaDeviceKind.audioInput &&
              e.label() == e.label() &&
              e.id() == hasDefault.id(),
        );
        devices.insert(0, hasDefault);
      }

      // 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.removeWhere(
          (e) =>
              e.kind() == MediaDeviceKind.audioInput &&
              e.label() == e.label() &&
              e.id() == hasDefault.id(),
        );
      }
    }
  }

  if (kind == null || kind == MediaDeviceKind.audioOutput) {
    final DeviceDetails? hasDefault = devices.firstWhereOrNull(
      (d) => d.kind() == MediaDeviceKind.audioOutput && d.id() == 'default',
    );

    if (hasDefault == null) {
      if (!PlatformUtils.isMobile || PlatformUtils.isWeb) {
        final DeviceDetails? device = devices.firstWhereOrNull(
          (e) => e.kind() == MediaDeviceKind.audioOutput,
        );

        if (device != null) {
          devices.insert(0, DefaultDeviceDetails(device));
        }
      }
    } else {
      // Sort the default device to the top, as it might be somewhere else.
      if (PlatformUtils.isWeb) {
        devices.removeWhere(
          (e) =>
              e.kind() == MediaDeviceKind.audioOutput &&
              e.label() == e.label() &&
              e.id() == hasDefault.id(),
        );
        devices.insert(0, hasDefault);
      }
    }
  }

  return devices;
}