#include "time.h"
#include <iomanip>

using namespace std;

/**
 * Times in this program are represented by three integers: H, M, & S, representing
 * the hours, minutes, and seconds, respecitvely.
 */



  // Create time objects
Time::Time() // midnight
{
  secondsSinceMidnight = 0;
}


Time::Time (int h, int m, int s)
{
  secondsSinceMidnight = s + 60 * m + 3600*h;
}

  // Access to attributes
int Time::getHours() const
{
  return secondsSinceMidnight / 3600;
}

int Time::getMinutes() const
{
  return (secondsSinceMidnight % 3600) / 60;
}

int Time::getSeconds() const
{
  return secondsSinceMidnight % 60;
}

// Calculations with time
void Time::add (Time delta)
{
  secondsSinceMidnight += delta.secondsSinceMidnight;
}
      

Time Time::difference (Time fromTime)
{
  Time diff;
  diff.secondsSinceMidnight = 
    secondsSinceMidnight - fromTime.secondsSinceMidnight;
}
  
  
/**
 * Read a time (in the format HH:MM:SS) after skipping any
 * prior whitepace.
 */
void Time::read (std::istream& in)
{
  char c;
  int hours, minutes, seconds;
  in >> hours >> c >> minutes >> c >> seconds;
  Time t (hours, minutes, seconds);
  secondsSinceMidnight = t.secondsSinceMidnight;
}


/**
 * Print a time in the format HH:MM:SS (two digits each)
 */
void Time::print (std::ostream& out) const
{
  out << setfill('0') << setw(2) << getHours() << ':' 
      << setfill('0') << setw(2) << getMinutes() << ':' 
      << setfill('0') << setw(2) << getSeconds();
}



// Comparison operators
bool Time::operator< (const Time& time2) const
{
  return secondsSinceMidnight < time2.secondsSinceMidnight;
}

bool Time::operator==(const Time& time2) const
{
  return secondsSinceMidnight == time2.secondsSinceMidnight;
}