UUVPN/source/lib/channels/vpn_manager.dart

import 'package:flutter/services.dart';
import 'package:uuvpn/channels/Platform.dart';
import 'package:uuvpn/utils/common_util.dart';

enum VpnStatus {
  connected(code: 2),
  connecting(code: 1),
  reasserting(code: 4),
  disconnecting(code: 5),
  disconnected(code: 0),
  invalid(code: 3);

  const VpnStatus({required this.code});

  final int code;
}

class VpnManager {
  Future<VpnStatus> getStatus() async {
    // Native channel
    const platform = MethodChannel("com.vpntunnel.vpnzeus/vpn_manager");
    if (Platform.isAndroid || Platform.isMacOS) {
      bool? result = await platform.invokeMethod("getStatus");
      // print("${result}");
      return (result ?? false) ? VpnStatus.connected : VpnStatus.disconnected;
    }

    int result;
    try {
      // bool xxx = await platform.invokeMethod("getStatus");
      // result = xxx ? 1 : 0;
      result = await platform.invokeMethod("getStatus");
    } on PlatformException catch (e) {
      print(e.toString());

      rethrow;
    }
    return VpnStatus.values.firstWhere((e) => e.code == result);
  }

  Future<DateTime> getConnectedDate() async {
    // Native channel
    const platform = MethodChannel("com.vpntunnel.vpnzeus/vpn_manager");
    double result;
    try {
      if (Platform.isAndroid || Platform.isMacOS) {
        // bool? result = await platform.invokeMethod("getConnectedDate");
        return DateTime.fromMillisecondsSinceEpoch((1 * 1000).toInt());
      }
      result = await platform.invokeMethod("getConnectedDate");
    } on PlatformException catch (e) {
      print(e.toString());

      rethrow;
    }
    return DateTime.fromMillisecondsSinceEpoch((result * 1000).toInt());
  }

  Future<bool> toggle() async {
    // Native channel
    const platform = MethodChannel("com.vpntunnel.vpnzeus/vpn_manager");
    bool result = false;
    try {
      result = await platform.invokeMethod("toggle");
    } on PlatformException catch (e) {
      print(e.toString());

      rethrow;
    }
    return result;
  }

  Future<String> getTunnelLog() async {
    // Native channel
    const platform = MethodChannel("com.vpntunnel.vpnzeus/vpn_manager");
    String result;
    try {
      result = await platform.invokeMethod("getTunnelLog");
    } on PlatformException catch (e) {
      print(e.toString());

      rethrow;
    }
    return result;
  }

  Future<String> getTunnelConfiguration() async {
    // Native channel
    const platform = MethodChannel("com.vpntunnel.vpnzeus/vpn_manager");
    String result;
    try {
      result = await platform.invokeMethod("getTunnelConfiguration");
    } on PlatformException catch (e) {
      print(e.toString());

      rethrow;
    }
    return result;
  }

  Future<String> setTunnelConfiguration(String conf) async {
    // Native channel
    const platform = MethodChannel("com.vpntunnel.vpnzeus/vpn_manager");
    String result;
    try {
      result = await platform.invokeMethod("setTunnelConfiguration", conf);
    } on PlatformException catch (e) {
      print(e.toString());

      rethrow;
    }
    return result;
  }
}