cake_wallet/lib/core/auth_service.dart
2022-12-13 16:19:31 +01:00

69 lines
2.3 KiB
Dart

import 'package:mobx/mobx.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:cake_wallet/entities/preferences_key.dart';
import 'package:cake_wallet/entities/secret_store_key.dart';
import 'package:cake_wallet/entities/encrypt.dart';
import 'package:cake_wallet/di.dart';
import 'package:cake_wallet/store/settings_store.dart';
class AuthService with Store {
AuthService({
required this.secureStorage,
required this.sharedPreferences,
required this.settingsStore,
});
final FlutterSecureStorage secureStorage;
final SharedPreferences sharedPreferences;
final SettingsStore settingsStore;
Future<void> setPassword(String password) async {
final key = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword);
final encodedPassword = encodedPinCode(pin: password);
await secureStorage.write(key: key, value: encodedPassword);
}
Future<bool> canAuthenticate() async {
final key = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword);
final walletName = sharedPreferences.getString(PreferencesKey.currentWalletName) ?? '';
var password = '';
try {
password = await secureStorage.read(key: key) ?? '';
} catch (e) {
print(e);
}
return walletName.isNotEmpty && password.isNotEmpty;
}
Future<bool> authenticate(String pin) async {
final key = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword);
final encodedPin = await secureStorage.read(key: key);
final decodedPin = decodedPinCode(pin: encodedPin!);
return decodedPin == pin;
}
void saveLastAuthTime() {
int timestamp = DateTime.now().millisecondsSinceEpoch;
sharedPreferences.setInt(PreferencesKey.lastAuthTimeMilliseconds, timestamp);
}
bool requireAuth() {
final timestamp = sharedPreferences.getInt(PreferencesKey.lastAuthTimeMilliseconds);
final duration = _durationToRequireAuth(timestamp ?? 0);
final requiredPinInterval = settingsStore.pinTimeOutDuration;
return duration >= requiredPinInterval.value;
}
int _durationToRequireAuth(int timestamp) {
DateTime before = DateTime.fromMillisecondsSinceEpoch(timestamp);
DateTime now = DateTime.now();
Duration timeDifference = now.difference(before);
return timeDifference.inMinutes;
}
}