/*
* Copyright (c) 2013-2022, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/

#ifndef TIMESTAMP_H__
#define TIMESTAMP_H__

#include <inttypes.h>
#include <thread>
#include <vector>
#include <string>
#include <boost/asio.hpp>

namespace i2p {
    namespace util {
        uint64_t GetMillisecondsSinceEpoch();

        uint64_t GetSecondsSinceEpoch();

        uint32_t GetMinutesSinceEpoch();

        uint32_t GetHoursSinceEpoch();

        void GetCurrentDate(char *date); // returns date as YYYYMMDD string, 9 bytes
        void GetDateString(uint64_t timestamp,
                           char *date); // timestap is seconds since epoch, returns date as YYYYMMDD string, 9 bytes
        void AdjustTimeOffset(int64_t offset); // in seconds from current

        class NTPTimeSync {
        public:

            NTPTimeSync();

            ~NTPTimeSync();

            void Start();

            void Stop();

        private:

            void Run();

            void Sync();

        private:

            bool m_IsRunning;
            std::unique_ptr <std::thread> m_Thread;
            boost::asio::io_service m_Service;
            boost::asio::deadline_timer m_Timer;
            int m_SyncInterval;
            std::vector <std::string> m_NTPServersList;
        };
    }
}

#endif