#include <iostream>
#include <cstdlib>
using namespace std;
#include "Time.h"

ostream& operator <<(ostream &sout, const Time &t) 
{
  sout << t.m_hour;
  
  if (t.m_minute < 10)
    sout << ":0" << t.m_minute;
  else
    sout << ":" << t.m_minute;

  return sout;
}

Time::Time()
  : m_hour(12), m_minute(0)
{ /* empty constructor body */ }

Time::Time(int hour, int minute)
  : m_hour(hour), m_minute(minute)
{
  CheckValidity();
}

void Time::Input() 
{
  cin >> m_hour >> m_minute;

  CheckValidity();
}

int Time::GetHour() const
{
  return m_hour;
}

int Time::GetMinutes() const
{
  return m_minute;
}

void Time::CheckValidity() const 
{

  if (m_hour < 0 || m_hour > 24) {
    cerr << "Error (Time): invalid hour" << endl;
    exit(1);
  }

  if (m_minute < 0 || m_minute > 59) {
    cerr << "Error (Time): invalid minutes" << endl;
    exit(1);
  }
}

const Time operator +(const Time &t, int deltaMinutes)
{
  int newMinutes = t.GetMinutes() + deltaMinutes;
  int deltaHours = newMinutes / 60;
  int newHours = t.GetHour() + deltaHours;

  int minute = newMinutes % 60;
  int hour = newHours % 24;

  return Time(hour, minute);
}

bool operator ==(const Time &t1, const Time &t2)
{
  return( t1.GetHour() == t2.GetHour() && t1.GetMinutes() == t2.GetMinutes() );
}

bool operator >(const Time &t1, const Time &t2)
{
  if ( t1.GetHour() > t2.GetHour() )
    return true;
  else if ( t1.GetHour() == t2.GetHour() )
    if ( t1.GetMinutes() > t2.GetMinutes() )
      return true;
    else
      return false;
  else
    return false;
}

bool operator <(const Time &t1, const Time &t2) 
{
  return (t2 > t1);
}

bool operator >=(const Time &t1, const Time &t2)
{
  return ( t1 > t2 || t1 == t2 );
}

bool operator <=(const Time &t1, const Time &t2)
{
  return ( t1 < t2 || t1 == t2 );
}

bool operator !=(const Time &t1, const Time &t2)
{
  return !(t1 == t2);
}