#include <iostream>
#include <iomanip>
#include <array>
using namespace std;


/*---- Class time definition. Contains only the list of members and the prototypes of the member functions -----*/
/*This part usually goes in a different file with extension ".h" (h is for header). "Time.h" for example*/

class Time //Class time definition - note that functions are defined later, outside of the class
{
  friend Time addTime(Time &t1, Time &t2);
  friend Time operator+(Time&, Time&);
  friend Time operator-(Time &t1, Time &t2);
public:
  Time(int =0, int =0, int =0);//Constructor which defaults to 00:00:00 when no arguments are given
  ~Time();


  void setHour(int &ho);//Prototype of function to set hour.
  void setMinute(int &mi);//Prototype of function to set minute
  void setSecond(int &se);//Prototype of function to set second
  
  void setTime(int ho, int mi, int se);//Prototype of function to set time all at once.

  int getHour() const;//Function that returns hour stored in object
  int getMinute() const;//Function that returns minute stored in object
  int getSecond() const;//Function that returns second stored in object

  void showTime24() const;//Function to output the time. 
  void showTime12() const;//Function to output the time. 

  void addTime(int ho, int mi, int se);//Prototype of function that adds ho, mi, se to a time object.
   void operator+=(int );
   void operator+=(Time );
   bool operator==(Time );
   bool operator<(Time );
   bool operator>(Time );

private://Here are the private members
  int hour; //Should be between 0 and 23.
  int minute;//Should be between 0 and 59
  int second;//Should be between 0 and 59
  int toSec() const;//Utility function that converts time to seconds.
};
  

Time addTime(Time&, Time&);

Time operator+(Time&, Time&);

Time::Time(int ho, int mi, int se)//Custom constructor
  :hour(ho),minute(mi),second(se)
{
   setTime(ho, mi, se);
}

Time::~Time()
  {   
   }  

void Time::setHour(int &ho)//Function to set hour
  {
   if(ho>=0 && ho<24)
      hour=ho;
   else
      hour=0;
  }

void Time::setMinute(int &mi)//Function to set minute
  {
   if(mi>=0 && mi<60)
      minute=mi;
   else
      minute=0;
  }

void Time::setSecond(int &se)//Function to set second
  {
   if(se>= 0 && se<60)      
      second=se;
   else
      second=0;
  }

void Time::setTime(int ho, int mi, int se)
   {
      setHour(ho);//you can also write hour=ho;
      setMinute(mi);//you can also write minute=mi;
      setSecond(se);//you can also write second=se;
   }

int Time::getHour() const//Function that returns hour stored in object
  {
     return hour;
  }

int Time::getMinute() const//Function that returns minute stored in object
  {
      return minute;
  }

int Time::getSecond() const//Function that returns second stored in object
  {
      return second;
  }

void Time::showTime24() const//shows time in 24 h format
  {
     cout << setfill('0') << setw(2) << getHour() << ":" << setw(2) << minute << ":" << setw(2) << second << endl;
  }

void Time::showTime12() const//shows time in 12 hour format
  {
     cout << setfill('0') << setw(2) 
     << 
     ( (hour  < 13) ? getHour() : getHour()-12 )
     << ":" << setw(2) << getMinute() << ":" << setw(2) << getSecond() 
     << ( (getHour()  < 12) ? " AM" : " PM" ) << endl;
  }

void Time::addTime(int ho, int mi, int se)
{
  int totsec1=toSec();//time of calling object in seconds
  int totsec2=ho*3600 + mi*60 + se;//time of added time in seconds
  int addsec=totsec1+totsec2;
  //Now we need to convert addsec to hours, minutes, seconds.
  hour = (addsec/3600)%24; //Gives number of hours in addsec seconds.
  addsec = addsec%3600;//Gives number of remaining seconds.
  minute = addsec/60;//Gives number of minutes.
  second = addsec%60;//Remainder seconds
}

void Time::operator+=(int sec)//
{
   int addsec = toSec() + sec;
   hour = (addsec/3600)%24; //Gives number of hours in addsec seconds.
   addsec = addsec%3600;//Gives number of remaining seconds.
   minute = addsec/60;//Gives number of minutes.
   second = addsec%60;//Remainder seconds
}

void Time::operator+=(Time t1)//Adds t1 to calling time
{
    (*this) = (*this) + t1;//Just adding the two times
   // int totsec1=toSec();//time of calling object in seconds
   // int totsec2=t1.toSec(); //time of t1 in seconds
   // int addsec=totsec1+totsec2;
   // //Now we need to convert addsec to hours, minutes, seconds.
   // hour = (addsec/3600)%24; //Gives number of hours in addsec seconds.
   // addsec = addsec%3600;//Gives number of remaining seconds.
   // minute = addsec/60;//Gives number of minutes.
   // second = addsec%60;//Remainder seconds
}

  bool Time::operator==(Time t2)
  {
     return (toSec()==t2.toSec());
  }

  bool Time::operator<(Time t2)
  {
     return (toSec()<t2.toSec());
  }

  bool Time::operator>(Time t2)
  {
     return (toSec()>t2.toSec());
  }

// 4 < 5

int Time::toSec() const 
{
   return hour*3600 + minute*60 + second;
}


Time addTime(Time &t1, Time &t2)
{
  int totsec1=t1.toSec();
  int totsec2=t2.toSec();
  int addsec=totsec1+totsec2;
  //Now we need to convert addsec to hours, minutes, seconds.
  int ho = (addsec/3600)%24; //Gives number of hours in addsec seconds.
  addsec = addsec%3600;//Gives number of remaining seconds.
  int mi = addsec/60;//Gives number of minutes.
  int se = addsec%60;//Remainder seconds

  return Time(ho,mi,se);
}

Time operator+(Time &t1, Time &t2)
{
   int totsec1=t1.toSec();
   int totsec2=t2.toSec();
   int addsec=totsec1+totsec2;
   //Now we need to convert addsec to hours, minutes, seconds.
   int ho = (addsec/3600)%24; //Gives number of hours in addsec seconds.
   addsec = addsec%3600;//Gives number of remaining seconds.
   int mi = addsec/60;//Gives number of minutes.
   int se = addsec%60;//Remainder seconds

   return Time(ho,mi,se);
}

Time operator-(Time &t1, Time &t2)
{
   int totsec1=t1.toSec();
   int totsec2=t2.toSec();
   int addsec=totsec1-totsec2;
   ((addsec < 0)? addsec += 24*3600 : addsec+=0);
   //Now we need to convert addsec to hours, minutes, seconds.
   int ho = (addsec/3600)%24; //Gives number of hours in addsec seconds.
   addsec = addsec%3600;//Gives number of remaining seconds.
   int mi = addsec/60;//Gives number of minutes.
   int se = addsec%60;//Remainder seconds

   return Time(ho,mi,se);
}





/*-----------------main part of the program---------------------*/

int main()
{
   Time now{13,14,15};
   cout << "now is: ";
   now.showTime24();
   Time now2{15,56,45};
   cout << "now2 is: ";
   now2.showTime24();
   

   cout << "(now2 == now2) gives " << (now2 == now2) << endl << endl;

   cout << "(now2 == now1) gives " << (now2 == now) << endl << endl;

   cout << "(now2 < now)  gives " << (now2 < now) << endl << endl;

   cout << "now + now2 gives ";
   (now + now2).showTime24();
   cout << endl;

   cout << "now - now2 gives ";
   (now - now2).showTime24();
   cout << endl;


}

/*---------------- End of main part --------------------*/