// Copyright (c) 2009-2010 Satoshi Nakamoto

// Copyright (c) 2009-2022 The Bitcoin Core developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <util/time.h>

#include <compat/compat.h>

#include <tinyformat.h>

#include <util/check.h>

#include <atomic>

#include <chrono>

#include <string>

#include <thread>

void UninterruptibleSleep(const std::chrono::microseconds& n) { std::this_thread::sleep_for(n); }

static std::atomic<std::chrono::seconds> g_mock_time{}; //!< For testing

NodeClock::time_point NodeClock::now() noexcept

{

    const auto mocktime{g_mock_time.load(std::memory_order_relaxed)};

    const auto ret{

        mocktime.count() ?

            mocktime :

            std::chrono::system_clock::now().time_since_epoch()};

    assert(ret > 0s);

    return time_point{ret};

};

void SetMockTime(int64_t nMockTimeIn) { SetMockTime(std::chrono::seconds{nMockTimeIn}); }

void SetMockTime(std::chrono::seconds mock_time_in)

{

    Assert(mock_time_in >= 0s);

    g_mock_time.store(mock_time_in, std::memory_order_relaxed);

}

std::chrono::seconds GetMockTime()

{

    return g_mock_time.load(std::memory_order_relaxed);

}

int64_t GetTime() { return GetTime<std::chrono::seconds>().count(); }

std::string FormatISO8601DateTime(int64_t nTime)

{

    const std::chrono::sys_seconds secs{std::chrono::seconds{nTime}};

    const auto days{std::chrono::floor<std::chrono::days>(secs)};

    const std::chrono::year_month_day ymd{days};

    const std::chrono::hh_mm_ss hms{secs - days};

    return strprintf("%04i-%02u-%02uT%02i:%02i:%02iZ", signed{ymd.year()}, unsigned{ymd.month()}, unsigned{ymd.day()}, hms.hours().count(), hms.minutes().count(), hms.seconds().count());

}

std::string FormatISO8601Date(int64_t nTime)

{

    const std::chrono::sys_seconds secs{std::chrono::seconds{nTime}};

    const auto days{std::chrono::floor<std::chrono::days>(secs)};

    const std::chrono::year_month_day ymd{days};

    return strprintf("%04i-%02u-%02u", signed{ymd.year()}, unsigned{ymd.month()}, unsigned{ymd.day()});

}

struct timeval MillisToTimeval(int64_t nTimeout)

{

    struct timeval timeout;

    timeout.tv_sec  = nTimeout / 1000;

    timeout.tv_usec = (nTimeout % 1000) * 1000;

    return timeout;

}

struct timeval MillisToTimeval(std::chrono::milliseconds ms)

{

    return MillisToTimeval(count_milliseconds(ms));

}