class GpsSignal {
  double hdop;
  List<SvItem> bsv;
  List<SvItem> esv;
  int status;
  int? direction;
  double? speed;
  List<SvItem> gsv;
  double lat;
  double lon;
  int view;
  int use;
  int time;
  List<SvItem> rsv;

  GpsSignal({
    required this.bsv,
    required this.esv,
    required this.gsv,
    required this.rsv,
    this.direction,
    required this.hdop,
    required this.lat,
    required this.lon,
    this.speed,
    required this.status,
    required this.time,
    required this.use,
    required this.view,
  });
  factory GpsSignal.fromJson(Map<dynamic, dynamic> json) {
    return GpsSignal(
      bsv: SVList.fromJson(json['BSV']).data,
      rsv: SVList.fromJson(json['RSV']).data,
      gsv: SVList.fromJson(json['GSV']).data,
      esv: SVList.fromJson(json['ESV']).data,
      direction: json['direction'],
      hdop: json['hdop'],
      lat: json['lat'],
      lon: json['lon'],
      speed: json['speed'],
      status: json['status'],
      time: json['time'],
      use: json['use'],
      view: json['view'],
    );
  }
}

class SvItem {
  int ea;
  int use;
  int sn;
  int aa;
  int l1;
  int l2;
  int l3;
  int l4;
  int l5;
  String name;

  SvItem(
      {required this.aa,
      required this.ea,
      required this.l1,
      required this.l2,
      required this.l3,
      required this.l4,
      required this.l5,
      required this.sn,
      required this.use,
      this.name = ''});
  factory SvItem.fromJson(Map<dynamic, dynamic> json) {
    return SvItem(
        ea: json['EA'],
        aa: json['AA'],
        use: json['use'],
        sn: json['SN'],
        l1: json['L1'],
        name: '',
        l2: json['L2'],
        l3: json['L3'],
        l4: json['L4'],
        l5: json['L5']);
  }
}

class SVList {
  List<SvItem> data;
  SVList(this.data);
  factory SVList.fromJson(List<dynamic> json) {
    List<SvItem> list = [];
    for (int i = 0; i < json.length; i++) {
      var item = json[i];

      list.add(SvItem.fromJson(item));
    }

    return SVList(list);
  }
}