#include "ehs/system/User.h"
#include "ehs/Log.h"

#include <unistd.h>
#include <cstring>
#include <cerrno>

namespace ehs
{
    void User::GetId(UInt_32* const real, UInt_32* const effective, UInt_32* const saved)
    {
        if (getresuid(real, effective, saved) == -1)
            EHS_LOG_INT("Error", 0, strerror(errno));
    }

    Str_8 User::GetName()
    {
        SInt_64 max = sysconf(_SC_LOGIN_NAME_MAX);
        if (max == -1)
        {
            EHS_LOG_INT("Error", 0, strerror(errno));
            return {};
        }

        Char_8* name = new Char_8[max];

        if (getlogin_r(name, max) == -1)
        {
            delete[] name;
            EHS_LOG_INT("Error", 1, strerror(errno));
            return {};
        }

        Str_8 result(name);

        delete[] name;

        return result;
    }
}