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package sixthfall16leapyear;

import java.util.Scanner;

/**
 *
 * @author jcmtiernan
 */
public class SixthFall16LeapYear
{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        
        int year = 0; 
        boolean leap = false;  //isALeapYear
        System.out.print("Please input a 4 digit year greater than 1201: "); 
        Scanner input = new Scanner(System.in);
        boolean invalidYear = true;
        
        while ( invalidYear)
        {
            if (input.hasNextInt())  // is the user input an integer?
            {
                year = input.nextInt();  // read the input year
                invalidYear = isValidYear(year);
            }
            else
            {
                System.out.print("Your input is not an integer. Please re-enter: ");
                input.next();
                System.out.println();
            }
        }

      //  year = input.nextInt();
        
        leap = isLeapYear(year);  

    // no else condition needed because not action is needed  
        //If false, year is NOT a leap year
         //  ( test condition ?  true result : false result )
         //   ( a > b ? a : b )
         
       System.out.println("Your input year "+year+" is "+(leap ? "" : "NOT ")+"a leap year");
       
       if (leap)
       {
           System.out.println("February has 29 days in "+year);
       }
       else
                  {
           System.out.println("February has 28 days in "+year);
       }

    }
    public static boolean isLeapYear(int yr)
    {
        boolean lp = false;
        //If the remainder of year divided by 4 is equal to 0  //might be a leap year if true
        if ((yr % 4) == 0)    
        {
            System.out.println("Year is divisible by 4 ");
            //If true, then if year divided by 100 has a remainder of 0
            if ((yr % 100) == 0)
            {
                System.out.println("Year is divisible by 100 ");
                //If true, then if year divided by 400 has a remainder of 0
                if ((yr % 400) == 0)
                {
                    System.out.println("Year is divisible by 400 ");            
                        //If true,  year is a leap year
                    lp = true;
                }
                        //If false,  year is NOT a leap year
            }
            else  // remainder of year / 100 is not 0
            {
                System.out.println("Year is NOT divisible by 100 ");
                //If false, year is a leap year
                lp = true;
            }
        } 
        yr = 0;
        
        return lp;
    }
    public static boolean isValidYear(int year)
    {
        boolean invalidYear = true;
                System.out.println();
                if (year > 1201)
                {
                    invalidYear = false;
                }
                else
                {
                    System.out.print("Your input is invalid. Please re-enter: ");
                }
        return invalidYear;
    }
    
    
}