/***
    Copyright (C) 2023 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: FSTimes.Unix.cpp
    Date: 2023-2-4
    Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include "FS.hpp"
#include "FSTimes.Unix.hpp"
#include <Source/Time/Time.hpp>
#include <sys/time.h>
#include <utime.h>

namespace Aurora::IO::FS
{
    void ConvertFileTime(timeval *temp,
                         AuInt64 alternative,
                         AuOptionalEx<AuInt64> time)
    {
        timespec ts;

        if (!time)
        {
            time = alternative;
        }

        AuTime::auabsns2ts(&ts, time.value());

        temp->tv_sec  = ts.tv_sec;
        temp->tv_usec = ts.tv_nsec / 1'000ull;
    }

    AUKN_SYM bool UpdateFileTimes(const AuString &path, const UpdateTimes &times)
    {
        if (times.createdNs)
        {
            SysPushErrorArg("Cannot modify a files' created timestamp under UNIX");
            return false;
        }

        auto pathex = NormalizePathRet(path);
        if (pathex.empty())
        {
            return false;
        }

        Stat auStat;
        if (!times.accessedNs ||
            !times.modifiedNs)
        {
            if (!AuFS::StatFile(pathex, auStat))
            {
                SysPushErrorArg("Cannot stat file of a attr-poke suspect");
                return false;
            }
        }
        else
        {
            if (!AuFS::FileExists(pathex))
            {
                SysPushErrorIO("Missing file: {}", path);
                return false;
            }
        }

        timeval timeVals[2];

        ConvertFileTime(&timeVals[0], auStat.accessedNs, times.accessedNs);
        ConvertFileTime(&timeVals[1], auStat.modifiedNs, times.modifiedNs);

        bool bRet = ::utimes(pathex.c_str(), timeVals) == 0;
        if (!bRet)
        {
            SysPushErrorIO();
        }

        return bRet;
    }
}