/**   This class models a date.
 *	  Author:  Linda Crane, updated by Anu Thomas
 *   
 *	  Data fields:  day: int - values of 1-31 
 *                  month: int - values 1-12 for January - December
 *                  year: int - value for year
 *    Methods:  default constructor
 *              initial constructors
 *				getDay: int - return day value
 *              getMonth: int - returns month value
 *              getYear: int - returns year value
 *				setDay (int) - sets day to parameter value
 *				setMonth (int) - sets month to parameter value
 *				setYear (int) - sets year to parameter value
 *			**	isEqual (OurDate): boolean - returns whether current date object has same date as parameter  ** you have to define this method
 *          **  isGreater (OurDate):boolean - compares two OurDate objects and returns true if current object (this) is 
 *                                            greater than the parameter object; else returns false  ** you have to define this method
 *				toString:String - displays values of date to String
 *				readDate (Scanner, char) - prompts user to enter values if the value is k, otherwise read from file                          
 *				addOne - adds one day to the current date object
 */
import java.util.*;

public class OurDate {
	private int day = 1;
	private int month = 1;
	private int year = 2017;

	public OurDate() {
	}

	public OurDate(int day, int month, int year) {
		setMonth(month);
		setYear(year);
		setDay(day);
	}

	public OurDate(OurDate date) {
		this.day = date.day;
		this.month = date.month;
		this.year = date.year;
	}

	// get methods
	public int getDay() {
		return day;
	}

	public int getMonth() {
		return month;
	}

	public int getYear() {
		return year;
	}

	// set methods
	public void setDay(int day) {
		if (day <= 0 || day > 31)
			this.day = 1;
		else if (this.month == 2 && day > 29)
			this.day = 1;
		else if (this.day > 30 && (this.month == 9 || this.month == 4 || this.month == 6 || this.month == 11))
			this.day = 1;
		else
			this.day = day;
	}

	public void setMonth(int month) {
		if (month < 0 || month > 12)
			this.month = 1;
		else
			this.month = month;
	}

	public void setYear(int year) {
		if (year < 0)
			this.year = 2010;
		else
			this.year = year;
	}

	public boolean isEqual(OurDate date) {
		if (this.getDay() == date.getDay() && this.getMonth() == date.getMonth() && this.getYear() == date.getYear()) {
			return true;

		}else

		return false;
	}

	public boolean isGreater(OurDate rhs) {
		if (this.getYear() > rhs.getYear()) {
			return true;
		} else if (this.getMonth() > rhs.getMonth()){

			return true;}
		else if (this.getDay() > rhs.getDay()) {

			return true;
		}else
		return false;
	}

	public String toString() {
		return new String("" + year + "/" + month + "/" + day);
	}

	public boolean readDate(Scanner in, char prompt) {
		month = 0;
		day = 0;
		year = 0;

		do {
			if (prompt == 'k')
				System.out.print("Enter day - between 1 and 31: ");
			if (in.hasNextInt())
				this.day = in.nextInt();
			else {
				System.out.println("Invalid Day input. Reenter day as appropriate.");
				in.next();
				if (prompt != 'k')

					return false;
			}
		} while (this.day <= 0 || this.day > 31 || (this.month == 2 && this.day > 29)
				|| (this.day > 30 && (this.month == 9 || this.month == 4 || this.month == 6 || this.month == 11)));

		do {
			if (prompt == 'k')
				System.out.print("\nEnter month - between 1 and 12: ");
			if (in.hasNextInt())
				this.month = in.nextInt();
			else {
				System.out.println("Invalid Month input. Reenter month as appropriate.");
				in.next();
				if (prompt != 'k')
					return false;
			}
		} while (this.month <= 0 || this.month > 12);

		do {
			if (prompt == 'k')
				System.out.print("Enter year: ");
			if (in.hasNextInt())
				this.year = in.nextInt();
			else {

				System.out.println("Invalid Year input. Reenter year as appropriate.");
				in.next();
				if (prompt != 'k')
					return false;
			}
		} while (this.year <= 0);

		return true;
	}

	public void addOne() {
		this.day++;
		if (this.day > 31 || (this.month == 2 && this.day > 29)
				|| (this.day > 30 && (this.month == 9 || this.month == 4 || this.month == 6 || this.month == 11))) {
			this.day = 1;
			this.month++;
			if (this.month > 12) {
				this.month = 1;
				this.year++;
			}
		}
	}

}