/***********************************************************************
	The implementation file for the date class including the 
	implementation of overloaded insertion and extraction and
	comparison operators.
	John Dolan			April 1, 2003
//  Author    : John Dolan, edited by Travis Dillon
*************************************************************************/

#include "main.h"
#include "node.h"
#include "bag.h"
#include "date.h"

using namespace std;

Date::Date():day(0),month(0),year(0){ }

Date::Date(int d,int m, int y):day(d),month(m),year(y) { }

ostream& operator <<(ostream& outs, Date d){
    outs<<d.month<<'/'<<d.day<<'/'<<d.year;
    return outs;
}

istream& operator >>(istream& ins, Date& d){
   bool flag = false;
   
   while(!ins.eof() && !isdigit(ins.peek())){
       ins.ignore();
       if(&ins == &cin) cout<<"Use format: mm/dd/yyyy.\n";
   }
   ins>>d.month;
   if(ins.eof()) return ins;
   if(ins.peek() == '/') ins.ignore();
   ins>>d.day;
   if(ins.eof()) return ins;
  if(ins.peek() == '/') ins.ignore();

   ins>>d.year;
   if(ins.eof()) return ins;
   while(d.month < 0 || d.month >12){
	cout<<"Invalid month.\nMonth: ";
	ins>>d.month;
        if(ins.eof()) return ins;
        flag = true;
   }
   while(d.day < 0 || d.day > 31){
       cout<<"Please enter a valid day:";
       ins>>d.day;
       if(ins.eof()) return ins;

       flag = true;
    }
   if(flag) cout<<d<<endl; 
   return ins;
}

bool operator > (const Date& d1, const Date& d2){
      	if(d1.year != d2.year)
	  return (d1.year > d2.year);
	else if(d1.month != d2.month)
	  return(d1.month > d2.month);
 	else
	  return (d1.day > d2.day);
}

bool operator < (const Date& d1, const Date& d2){
        if(d1.year != d2.year)
          return (d1.year < d2.year);
        else if(d1.month != d2.month)
          return(d1.month < d2.month); 
        else
          return (d1.day < d2.day);

}

bool operator == (const Date& d1, const Date& d2){
	return(d1.year == d2.year && d1.month == d2.month &&
	       d1.day == d2.day);
}

bool operator != (const Date& d1, const Date& d2){
        return(!(d1.year == d2.year && d1.month == d2.month &&
               d1.day == d2.day));

}