Device Info Service

deviceInfo.service.dart

class DeviceInfoData {
  final String deviceModel;
  final String deviceId;
  final String appVersion;

  const DeviceInfoData(
      {@required this.deviceModel,
      @required this.deviceId,
      @required this.appVersion});
}

class DeviceInfoService {
  DeviceInfoData _deviceInfo;
  final _deviceInfoPlugin = DeviceInfoPlugin();

  DeviceInfoService._();
  static final instance = DeviceInfoService._();

  Future<DeviceInfoData> get data async {
    if (_deviceInfo == null) {
      _deviceInfo = await _getDeviceInfo();
    }
    return _deviceInfo;
  }

  Future<DeviceInfoData> _getDeviceInfo() async {
    final packageInfo = await PackageInfo.fromPlatform();
    final _androidInfo = await _deviceInfoPlugin.androidInfo;
    final _iosDeviceInfo = await _deviceInfoPlugin.iosInfo;
    final _versionNumber = packageInfo.version;

    if (Platform.isAndroid) {
      _deviceInfo = DeviceInfoData(
        deviceModel: _androidInfo.model,
        deviceId: _androidInfo.id,
        appVersion: _versionNumber,
      );
    } else if (Platform.isIOS) {
      _deviceInfo = DeviceInfoData(
        deviceModel: _iosDeviceInfo.name,
        deviceId: _iosDeviceInfo.identififerForVendor,
        appVersion: _versionNumber,
      );
    } else {
      _deviceInfo = DeviceInfoData(
        deviceModel: "NA",
        deviceId: "NA",
        appVersion: _versionNumber,
      );
    }
    return _deviceInfo;
  }
}


/// So now you can do this in the header
Future<Map<String, String>> requestHeaders({bool useToken = true}) async {
  final deviceInfoData = await DeviceInfoService.instance.data
  //.... other code in the function
    
  final headers = <String, String>{
      'Content-Type': 'application/json',
      'app-version': deviceInfoData.appVersion,
      'phone-model': deviceInfoData.deviceModel,
      'mobile-id': deviceInfoData.deviceId,
      if (token != null && (useToken ?? true))
        'Authorization': 'Bearer ${jsonDecode(token)}',
    };  
  
}