getToken method

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 {
    try {
      _currentToken =
          OAuthToken.fromJson(jsonDecode(_encryptor!.decrypt(jsonToken)));
    } catch (e) {
      await clear();
      SdkLog.e(
          'A previously saved token was deleted due to an error during decryption. Please login again.');
    }
  }
  return _currentToken;
}