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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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 <http://www.gnu.org/licenses/>.
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*/
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/** @file network_survey.h Part of the network protocol handling opt-in survey. */
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#ifndef NETWORK_SURVEY_H
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#define NETWORK_SURVEY_H
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#include <condition_variable>
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#include <mutex>
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#if defined(__MINGW32__)
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#include "../3rdparty/mingw-std-threads/mingw.condition_variable.h"
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#include "../3rdparty/mingw-std-threads/mingw.mutex.h"
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#endif
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#include "core/http.h"
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/**
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* Socket handler for the survey connection
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*/
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class NetworkSurveyHandler : public HTTPCallback {
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protected:
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void OnFailure() override;
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void OnReceiveData(const char *data, size_t length) override;
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bool IsCancelled() const override { return false; }
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public:
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enum class Reason {
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PREVIEW, ///< User is previewing the survey result.
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LEAVE, ///< User is leaving the game (but not exiting the application).
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EXIT, ///< User is exiting the application.
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CRASH, ///< Game crashed.
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};
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void Transmit(Reason reason, bool blocking = false);
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std::string CreatePayload(Reason reason, bool for_preview = false);
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constexpr static bool IsSurveyPossible()
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{
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#if !(defined(WITH_NLOHMANN_JSON) && defined(SURVEY_KEY))
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/* Without JSON library, we cannot send a payload; so we disable the survey. */
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return false;
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#else
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return true;
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#endif /* WITH_NLOHMANN_JSON */
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}
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private:
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std::mutex mutex; ///< Mutex for the condition variable.
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std::condition_variable loaded; ///< Condition variable to wait for the survey to be sent.
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};
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extern NetworkSurveyHandler _survey;
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#endif /* NETWORK_SURVEY_H */
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