//import 'dart:async';
//import 'package:flutter/foundation.dart';
//import 'package:shared_preferences/shared_preferences.dart';
//import 'package:mobx/mobx.dart';
//import 'package:cake_wallet/src/domain/services/user_service.dart';
//import 'package:cake_wallet/src/domain/services/wallet_service.dart';
//import 'package:cake_wallet/view_model/auth_state.dart';
//import 'package:cake_wallet/generated/i18n.dart';
//
//part 'auth_store.g.dart';
//
//class AuthStore = AuthStoreBase with _$AuthStore;
//
//abstract class AuthStoreBase with Store {
//  AuthStoreBase(
//      {@required this.userService,
//      @required this.walletService,
//      @required this.sharedPreferences}) {
//    state = AuthenticationStateInitial();
//    _failureCounter = 0;
//  }
//
//  static const maxFailedLogins = 3;
//  static const banTimeout = 180; // 3 mins
//  final banTimeoutKey = S.current.auth_store_ban_timeout;
//
//  final UserService userService;
//  final WalletService walletService;
//
//  final SharedPreferences sharedPreferences;
//
//  @observable
//  AuthState state;
//
//  @observable
//  int _failureCounter;
//
//  @action
//  Future auth({String password}) async {
//    state = AuthenticationStateInitial();
//    final _banDuration = banDuration();
//
//    if (_banDuration != null) {
//      state = AuthenticationBanned(
//          error: S.current.auth_store_banned_for + '${_banDuration.inMinutes}' + S.current.auth_store_banned_minutes);
//      return;
//    }
//
//    state = AuthenticationInProgress();
//    final isAuth = await userService.authenticate(password);
//
//    if (isAuth) {
//      state = AuthenticatedSuccessfully();
//      _failureCounter = 0;
//    } else {
//      _failureCounter += 1;
//
//      if (_failureCounter >= maxFailedLogins) {
//        final banDuration = await ban();
//        state = AuthenticationBanned(
//            error: S.current.auth_store_banned_for + '${banDuration.inMinutes}' + S.current.auth_store_banned_minutes);
//        return;
//      }
//
//      state = AuthenticationFailure(error: S.current.auth_store_incorrect_password);
//    }
//  }
//
//  Duration banDuration() {
//    final unbanTimestamp = sharedPreferences.getInt(banTimeoutKey);
//
//    if (unbanTimestamp == null) {
//      return null;
//    }
//
//    final unbanTime = DateTime.fromMillisecondsSinceEpoch(unbanTimestamp);
//    final now = DateTime.now();
//
//    if (now.isAfter(unbanTime)) {
//      return null;
//    }
//
//    return Duration(milliseconds: unbanTimestamp - now.millisecondsSinceEpoch);
//  }
//
//  Future<Duration> ban() async {
//    final multiplier = _failureCounter - maxFailedLogins + 1;
//    final timeout = (multiplier * banTimeout) * 1000;
//    final unbanTimestamp = DateTime.now().millisecondsSinceEpoch + timeout;
//    await sharedPreferences.setInt(banTimeoutKey, unbanTimestamp);
//
//    return Duration(milliseconds: timeout);
//  }
//
//  @action
//  void biometricAuth() {
//    state = AuthenticatedSuccessfully();
//  }
//}