network_survey.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef NETWORK_SURVEY_H
#define NETWORK_SURVEY_H
 
#include <condition_variable>
#include <mutex>
#include "core/http.h"

class NetworkSurveyHandler : public HTTPCallback {
protected:
  void OnFailure() override;
  void OnReceiveData(std::unique_ptr<char[]> data, size_t length) override;
  bool IsCancelled() const override { return false; }
 
public:
  enum class Reason : uint8_t {
    Preview, 
    Leave, 
    Exit, 
    Crash, 
  };
 
  void Transmit(Reason reason, bool blocking = false);
  std::string CreatePayload(Reason reason, bool for_preview = false);

  constexpr static bool IsSurveyPossible()
  {
    return true;
  }
 
private:
  std::mutex mutex; 
  std::atomic<bool> transmitted; 
  std::condition_variable transmitted_cv; 
};

extern NetworkSurveyHandler _survey;
 
#endif /* NETWORK_SURVEY_H */