/**
 * @file    wipe.cpp
 * @brief   wipe drive
 * @author  hendrik schutter
 * @date    03.05.2020
 */

#include "../include/reHDD.h"

//#define DRYRUN //if defined the drive will not be wiped, a ping cmd is attempted instead

/**
 * \brief   wipe drive with shred
 * \param	pointer of Drive instance
 * \return  void
 */
void Wipe::wipeDrive(Drive* drive)
{
    size_t len = 0; //lenght of found line
    char* cLine = NULL; //found line

#ifndef DRYRUN
    string sCMD = ("./bin_util/shred -v ");
    sCMD.append(drive->getPath());
#endif
#ifdef DRYRUN
    cout << "dryrun for " << drive->getPath() << endl;
    string sCMD = ("ping ::1 -c 5");
#endif
    const char* cpComand = sCMD.c_str();

    cout << "wipe: " << cpComand << endl;

    auto t_start = chrono::high_resolution_clock::now();

    FILE* outputfileSmart = popen(cpComand, "r");

    while ((getline(&cLine, &len, outputfileSmart)) != -1)
    {
        string sLine = string(cLine);
        cout << sLine;
    }
    fclose(outputfileSmart);

    auto t_end = chrono::high_resolution_clock::now();

    uint64_t u64TimeMS = chrono::duration<double, std::milli>(t_end-t_start).count();

    uint64_t u64hours = 0U;
    uint64_t u64minutes = 0U;
    uint64_t u64seconds = 0U;

    while(u64TimeMS >= 1000) 
    {
        u64seconds++;
        u64TimeMS = u64TimeMS - 1000;
    }

    while(u64seconds >= 60) 
    {
        u64minutes++;
        u64seconds = u64seconds - 60;
    }

    while(u64minutes >= 60) 
    {
        u64hours++;
        u64minutes = u64minutes - 60;
    }

    cout << "Elapsed time: " << u64hours << " h - " << u64minutes << " min - " << u64seconds << " sec" << endl;
}