| 1 | import 'package:cake_wallet/core/auth_service.dart'; |
| 2 | import 'package:cake_wallet/entities/encrypt.dart'; |
| 3 | import 'package:cake_wallet/entities/secret_store_key.dart'; |
| 4 | import 'package:cake_wallet/store/settings_store.dart'; |
| 5 | |
| 6 | class SetupPinCodeViewModel { |
| 7 | SetupPinCodeViewModel(this._authService, this._settingsStore, {this.isDuressPin = false}) |
| 8 | : _pinCodeLength = _settingsStore.pinCodeLength; |
| 9 | |
| 10 | String originalPinCode = ''; |
| 11 | |
| 12 | String repeatedPinCode = ''; |
| 13 | |
| 14 | Future<void> setPinCode(String pinCode) async { |
| 15 | if (!isOriginalPinCodeFull) { |
| 16 | await setOriginalPinCode(pinCode); |
| 17 | return; |
| 18 | } |
| 19 | |
| 20 | repeatedPinCode = pinCode; |
| 21 | } |
| 22 | |
| 23 | int get pinCodeLength => _pinCodeLength; |
| 24 | |
| 25 | set pinCodeLength(int length) { |
| 26 | _pinCodeLength = length; |
| 27 | reset(); |
| 28 | } |
| 29 | |
| 30 | bool get isOriginalPinCodeFull => originalPinCode.length == pinCodeLength; |
| 31 | |
| 32 | bool get isRepeatedPinCodeFull => repeatedPinCode.length == pinCodeLength; |
| 33 | |
| 34 | bool get isPinCodeCorrect => |
| 35 | originalPinCode.length == pinCodeLength && |
| 36 | repeatedPinCode.length == pinCodeLength && |
| 37 | originalPinCode == repeatedPinCode; |
| 38 | |
| 39 | final SettingsStore _settingsStore; |
| 40 | final AuthService _authService; |
| 41 | final bool isDuressPin; |
| 42 | int _pinCodeLength; |
| 43 | |
| 44 | Future<void> setOriginalPinCode(String pin) async { |
| 45 | originalPinCode = pin; |
| 46 | |
| 47 | if (isDuressPin && pin.length == pinCodeLength) { |
| 48 | final regularKey = generateStoreKeyFor(key: SecretStoreKey.pinCodePassword); |
| 49 | final encodedRegularPin = await _authService.secureStorage.read(key: regularKey); |
| 50 | |
| 51 | if (encodedRegularPin != null && encodedRegularPin.isNotEmpty) { |
| 52 | final realPin = decodedPinCode(pin: encodedRegularPin); |
| 53 | |
| 54 | if (pin == realPin) { |
| 55 | reset(); |
| 56 | throw Exception('Duress PIN cannot be the same as regular PIN'); |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | void setRepeatedPinCode(String pinCode) { |
| 63 | if (isRepeatedPinCodeFull) { |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | repeatedPinCode = pinCode; |
| 68 | } |
| 69 | |
| 70 | void reset() { |
| 71 | originalPinCode = ''; |
| 72 | repeatedPinCode = ''; |
| 73 | } |
| 74 | |
| 75 | Future<void> setupPinCode() async { |
| 76 | if (!isPinCodeCorrect) { |
| 77 | return; |
| 78 | } |
| 79 | |
| 80 | if (isDuressPin) { |
| 81 | await _authService.setDuressPin(repeatedPinCode); |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | await _authService.setPassword(repeatedPinCode); |
| 86 | _settingsStore.pinCodeLength = pinCodeLength; |
| 87 | } |
| 88 | } |