getToken method Null safety

  1. @override
Future<OAuthToken?> getToken()
override

저장되어 있는 OAuthToken 반환

Implementation

@override
Future<OAuthToken?> getToken() async {
  if (_currentToken != null) {
    return _currentToken;
  }

  _encryptor ??= await AESCipher.create();
  _preferences ??= await SharedPreferences.getInstance();
  var version = _preferences!.getString(versionKey);
  var jsonToken = _preferences!.getString(tokenKey);

  if (jsonToken == null || version == null) {
    _currentToken = await _migrateOldToken();
  } else {
    _currentToken =
        OAuthToken.fromJson(jsonDecode(_encryptor!.decrypt(jsonToken)));
  }
  return _currentToken;
}