void saveWeatherData(WEATHER_DATA data) {
  String jsonData = weatherDataToJson(data);
  Serial.println("Data has been collected");
  Serial.println(jsonData);
  Serial.println("Saving data...");

  HttpClient client = HttpClient(ethernetClient, SERVER_IP, SERVER_PORT);

  String urlAuth = generateAuthenticationUrl("root", "root", "password");
  
  client.beginRequest();
  client.post(urlAuth, "application/json", "");
  client.sendHeader("Authorization", "Basic d2VhdGhlcmxvZ2dlcjp3ZWF0aGVybG9nZ2Vy");
  client.endRequest();

  String token;
  int statusAuth = client.responseStatusCode();

  if(statusAuth == 200) {
      Serial.println("Authentication OK");
      String stringResponse = client.responseBody();

      DynamicJsonBuffer jsonBuffer;
      JsonObject& jsonResponse = jsonBuffer.parseObject(stringResponse);

      token = jsonResponse["access_token"].as<String>();
  } else {
    Serial.write("Error on authentication ");
    Serial.println(statusAuth);
  }

  delay(3000);
  
  String authHeader = "Bearer ";
  authHeader.concat(token);

  client.beginRequest();
  client.post("/", "application/json", jsonData);
  client.sendHeader("Authorization", authHeader);
  client.endRequest();

  int status = client.responseStatusCode();

  if(status == 201) {
    Serial.println("Data has been saved");
  } else {
    Serial.write("Error ");
    Serial.println(status);
  }

  client.stop();
  delay(5000);

}