getAccessToken static method

Future<String> getAccessToken()

Implementation

static Future<String> getAccessToken() async {
  String accessToken = _accessToken;
  if (_accessToken.isEmpty) {
    accessToken = await _secureStorage.read(key: _accessTokenKey) ?? "";
    if (accessToken.isEmpty) return "";
    _accessToken = accessToken;
  }
  try {
    if (JwtDecoder.getRemainingTime(accessToken).inMinutes > 1) {
      try {
        if (_heraPublicKey == "") {
          throw Exception("missing required Hera public key");
        }
        JWT.verify(accessToken, RSAPublicKey(_heraPublicKey));
        return accessToken; // we have a valid access token with time left
      } catch (e) {
        print("could not verify token with err" + e.toString());
        return "";
      }
    } else {
      String refreshToken = await getRefreshToken();
      if (refreshToken.isEmpty) {
        return "";
      }
      // token is expired - refresh
      HeraRequest req = HeraRequest()
        ..namespace = _namespace
        ..accessToken = accessToken;
      Token _token = Token()
        ..deviceInfo = (await HeraExtenstion.getDeviceInfo())
        ..refreshToken = _refreshToken;
      req.token = _token;
      HeraResponse refreshResp = await _heraClient.refreshToken(req);
      _setAccessToken(refreshResp.token.accessToken);
      _setRefreshToken(refreshResp.token.refreshToken);
      return refreshResp.token.accessToken;
    }
  } catch (e) {
    await _secureStorage.delete(key: _refreshTokenKey);
    print("could not refresh token with err: " + e.toString());
  }
  return "";
}