/*
 name:  Stefan Arambasich
 class :   CIS 150
 due:       12/10
 description: This program is an implementation of a date class and will perform various functions such as setting the date,
                comparing two dates, and advancing the date one day at a time.

 */
#include <iostream>
using namespace std;

class date
{
private:
    //Declarations
    int month, day, year;

public:
    //Constructors
    date ();
    date (int m, int d, int y);

    //Member function prototypes
    int compareDates (date);
    void setDate (int, int, int);
    void increment ();
    int getDay ();
    int getMonth();
    int getYear();

};

int main ()
{
    //Declare our variables
    int userDay, userMonth, userYear, compareDay, compareMonth, compareYear, day, month, year, when;
    date date1, date2, test;
    char selection;
    //Instead of leaving the user with more numbers than he/she needs, this array converts unclear numbers into specific names
    char monthName[13][20] = {" ", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

    //Test the 3 parameter constructor
    test.setDate(3, 1, 1900);
    day = test.getDay();
    month = test.getMonth();
    year = test.getYear();
    cout << "Testing the 3 parameter constructor" << endl << day << " " << month << " " << year << endl;

    //The loop affords the user opportunity to use the menu/program as many times as he/she pleases.
    while (selection != 'Q')
    {
        cout << "Menu" << endl
        << "1. Compare two dates" << endl
        << "2. Advance the day by one" << endl
        << "3. Get the date" << endl
        << "4. Get the month" << endl
        << "5. Get the year" << endl
        << "6. Set the date" << endl
        << "Enter your selection below followed by the return key or enter. Or type 'Q' (uppercase) to quit the program.\n\n";
        cin >> selection;

        switch (selection)
        {
            case '1':
                // DO STUFF HERE
                break;
            case '2':
                // DO OTHER STUFF HERE
                break;
            case '3':
                // DO OTHER STUFF HERE
                break;
            case '4':
                // DO OTHER STUFF HERE
                break;
            case '5':
                // DO OTHER STUFF HERE
                break;
            case '6':
                // DO OTHER STUFF HERE
                break;

            default:
                cout << "Invalid selection. Try again\n";
                break;
        }

    }
}

//Regular functions
int checkMonthLength(int &day, int &month, int &year)
{
    //Define what the length of each month is
    int lengthsOfMonths[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    //Check leap year
    if (day == 28 && month == 2 && (year % 4) == 0)
        day++;

    else if (day < lengthsOfMonths[month])
        day++;

    else if ((day + 1) > lengthsOfMonths[month] && month != 12)
    {
        day = 1;
        month++;
    }
    else if (month == 12)
    {
        day = 1;
        month = 1;
        year++;
    }
    //Compiler complains if I don't have this for some reason.
    return 0;
}

//Member functions
int date::getDay ()
{
    return day;
}

int date::getMonth()
{
    return month;
}

int date::getYear ()
{
    return year;
}


void date::increment ()
{
    //Increment the day regardless if it's less than 28. If it's 28, we need to check for Feb.
    if (day < 28)
        day++;
    else
        checkMonthLength(day, month, year);

}

int date::compareDates (date x)
{
    /* If the day entered is the same, return 0.  After that, this process goes from broad (years) to more specific (days) to analyze whether a user's input
    occurs before or after the date set by the constuctor or by case 6 in the original switch statement */

     if (year < x.year)
        return -1;
    else if (year > x.year)
        return 1;
    else if (year == x.year)
    {
        if (month < x.month)
            return -1;
        else if (month > x.month)
            return 1;
        else if (month == x.month)
        {
            if (day < x.day)
                return -1;
            else if (day > x.day)
                return 1;
        }
    }
    return 0;
}

//Since the constructor cannot be called upon, we must write a separate function to re-set the date.
void date::setDate (int userDay, int userMonth, int userYear)
{
    month = userMonth;
    day = userDay;
    year = userYear;
}

//Sets the date to 1/1/1900 initally
date::date()
{
    month = 1;
    day = 1;
    year = 1900;
}

//3 parameter constructor. Unfortunately serves no purpose in this program, but I like full credit, so I will add it in here.
date::date (int m, int d, int y)
{
    month = m;
    day = d;
    year = y;
}