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

class month
{
private:
	MyString name;
	int num;
public:
	month()
		{	name = "January"; num = 1;}
	month(MyString month)
		{	
			name = month;
			if(!set_name(month))
				cout << "ERROR: INVALID MONTH" << endl;
		}
	month(int number)
		{	
			num = number;
			if(!set_name(number))
				cout << "ERROR: INVALID NUMBER" << endl;
		}
	
	/***************SET******************/
	bool set_name(MyString);
	bool set_name(int);
	bool set_month_num(int);
	bool set_month_num(MyString);

	/***************GET******************/
	MyString get_name()
		{	return name;	}
	int get_month_num()
		{	return num;	}

	/********OVERLOADED OPERATORS********/
	void operator ++ ();
	void operator ++ (int);
	void operator -- ();
	void operator -- (int);
	friend ostream &operator << (ostream &, const month &);
	friend istream &operator >> (istream &, month &);
};

bool month::set_name(MyString str)
{	
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	bool status = false;
	for(int i=0; i<12; i++)
	{	
		if(str == temp[i])
			status = true;
	}
	name = str;
	return status;
}

bool month::set_name(int number)
{
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	bool status = false;
	if (number > 0 && number <13)
	{	
		name = temp[number - 1];
		status = true;
	}
	else 
		status = false;
	
	return status;
}

bool month::set_month_num(int number)
{
	bool status = false;
	if (number > 0 && number <13)
	{	
		num = number;
		status = true;
	}
	else 
		status = false;
	return status;
}

bool month::set_month_num(MyString str)
{
	bool status = false;
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	for(int i=0; i<12; i++)
	{	
		if(str == temp[i])
		{	
			num = (i + 1);
			status = true;
		}
	}
	return status;
}

void month::operator ++ ()
{	
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	int index;
	for(int i=0; i<12; i++)
	{	
		if(name == temp[i])
			index = (i+1);
	}
	if(index == 12)
		index = 0;
	name = temp[index];
	num = index + 1;
}

void month::operator ++(int str)
{
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	int index;
	for(int i=0; i<12; i++)
	{	
		if(name == temp[i])
			index = (i+1);
	}
	if(index == 12)
		index = 0;
	name = temp[index];
	num = index + 1;
}

void month::operator --()
{	
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	int index;
	for(int i=0; i<12; i++)
	{	
		if(name == temp[i])
			index = (i-1);
	}
	if(index == -1)
		index = 11;
	name = temp[index];
	num = index + 1;
}

void month::operator --(int str)
{	
	MyString temp[12] = { "January",
						  "Febuary",
						  "March",
						  "April",
						  "May",
						  "June",
						  "July",
						  "August",
						  "September",
						  "October",
						  "November",
						  "December"
						};
	int index;
	for(int i=0; i<12; i++)
	{	
		if(name == temp[i])
			index = (i-1);
	}
	if(index == -1)
		index = 11;
	name = temp[index];
	num = index + 1;
}

ostream &operator<<(ostream &strm, const month &obj)
{
	strm << obj.name << " -> " << obj.num;
	return strm;
}

istream &operator>>(istream &strm, month &obj)
{
	do
	{
		cout << "Enter the month number: ";
		strm >> obj.num;
	}while(obj.num < 0 && obj.num > 12);
	if(!obj.set_name(obj.num))
		cout << "ERROR: INVALID INPUT" << endl;
	return strm;
}

int main()
{
	month Month;
	cin >> Month;

	cout << "The month is: " << Month << endl << endl;
	cout << "Month++ is equal to: "; Month++;
	cout << Month << endl;
	cout << "++Month is equal to: "; ++Month;
	cout << Month << endl;
	cout << "Month-- is equal to: "; Month--;
	cout << Month << endl;
	cout << "--Month is equal to: "; --Month;
	cout << Month << endl << endl;

	return 0;

}