package Calendar;

import java.util.Iterator;
import java.util.TreeSet;


public class Year implements Comparable<Year>,Iterable<Year> {
	private int year;
	private Days firstDay;
	private TreeSet<Month> YMonths = new TreeSet<>();
	public Year (int year, Days firstDay) {
		this.year = year;
		this.firstDay = firstDay;
		Month tmpMonth = new Month(year,1,firstDay);
		YMonths.add(tmpMonth);
		while (tmpMonth.getName().ordinal() < Months.December.ordinal()) {
			
			tmpMonth = tmpMonth.iterator().next();
			YMonths.add(tmpMonth);
		}
	}
	@Override
	public Iterator<Year> iterator() {
		// TODO Auto-generated method stub
		return new Iterator<Year>() {

			@Override
			public boolean hasNext() {
				// there's always a next year
				return true;
			}

			@Override
			public Year next() {
				// TODO Auto-generated method stub
				return new Year(nextYear(),Days.values()[(YMonths.last().getWeeks().last().getWeekDays().last().getName().ordinal()+1)%7]);
			}
		};
	}

	@Override
	public int compareTo(Year o) {
		// TODO Auto-generated method stub
		if (year-o.year < 0) {
			return -1;
		} else if (year-o.year > 0) {
			return 1;
		} else return 0;
	}
	
	public int nextYear() {
		return year+1;
	}
	
	public String toString() {
		String out = year + " :\n";
		for (Month M : YMonths) {
			out += "\t" + M.toString()+ "\n";
		}
		return out;
	}
	public TreeSet<Month> getMonths() {
		return YMonths;
	}
	public int getYear() {
		return year;
	}

}