#include <iostream>
#include <sys/types.h>

#include "stopwatch.hpp"

using namespace std;

StopWatch::StopWatch(): mRounds(0)
{
}

void StopWatch::start()
{
    mStartTime.getCurrentTime();
}

void StopWatch::stop()
{
    mStopTime.getCurrentTime();
    mStopTime.subtract(mStartTime);
    mStopTime.print();
}

void StopWatch::stopRound()
{    
    mStopTime.getCurrentTime();
    Time TotalDiff = mStopTime - mStartTime;
    Time RoundDiff = mStopTime - mLastStopTime;
    mLastStopTime = mStopTime;
    cout << "Round " << mRounds++ <<":\n";
    RoundDiff.print();
    cout << "Total:" << "\n";
    TotalDiff.print();    
}


Time& Time::subtract(const Time& Subtrahent)
{
    mTmsTime.tms_utime -= Subtrahent.mTmsTime.tms_utime;
    mTmsTime.tms_stime -= Subtrahent.mTmsTime.tms_stime;
    mRealTime -= Subtrahent.mRealTime;
    return *this;
}

Time Time::operator-(const Time& Subtrahent) const
{
    Time Result(*this);
    return Result.subtract(Subtrahent);
}


void Time::print()
{
    double UserTime      = static_cast<double>(mTmsTime.tms_utime) / mTicksPerSec;
    double SystemTime    = static_cast<double>(mTmsTime.tms_stime) / mTicksPerSec;
    double  RealTime     = static_cast<double>(mRealTime) / mTicksPerSec;
    cout << "User time      = " << UserTime   << "s\n";
    cout << "System time    = " << SystemTime << "s\n";
    cout << "Real time      = " << RealTime   << "s\n";
}