Line data    Source code

       1              : import 'package:connectivity_plus/connectivity_plus.dart';
       2              : import 'package:meta/meta.dart';
       3              : 
       4              : import 'vpn_detector_platform_interface.dart';
       5              : 
       6              : /// Status of the VPN connection.
       7              : enum VpnStatus {
       8              :   /// VPN is active.
       9              :   active,
      10              : 
      11              :   /// VPN is not active.
      12              :   notActive,
      13              : }
      14              : 
      15              : /// A utility to detect VPN status and react to connectivity changes.
      16              : class VpnDetector {
      17              :   /// Creates a [VpnDetector] with default dependencies.
      18            2 :   factory VpnDetector() => VpnDetector.withDependencies(
      19            1 :         connectivity: Connectivity(),
      20            1 :         platform: VpnDetectorPlatform.instance,
      21              :       );
      22              : 
      23              :   /// Creates a [VpnDetector] with injected dependencies for testing.
      24            1 :   @visibleForTesting
      25              :   VpnDetector.withDependencies({
      26              :     required Connectivity connectivity,
      27              :     required VpnDetectorPlatform platform,
      28              :   })  : _connectivity = connectivity,
      29              :         _platform = platform;
      30              : 
      31              :   final Connectivity _connectivity;
      32              :   final VpnDetectorPlatform _platform;
      33              : 
      34              :   /// Checks whether VPN is active, returning a [VpnStatus].
      35            1 :   Future<VpnStatus> isVpnActive() async {
      36            2 :     final bool active = await _platform.isVpnActive();
      37              :     return active ? VpnStatus.active : VpnStatus.notActive;
      38              :   }
      39              : 
      40              :   /// A stream of [VpnStatus] that updates whenever the connectivity changes.
      41            1 :   Stream<VpnStatus> get onVpnStatusChanged =>
      42            5 :       _connectivity.onConnectivityChanged.asyncMap((_) => isVpnActive());
      43              : }