package Lect28Debugging;

public class MonthlyCalendarSimpleCorrect {
	private static final int NUMBER_OF_WEEKS = 6;
	private static final int DAYS_PER_WEEK = 7;
	private int numberOfDays;
	private int startingDayNum;  // First day of month (starts at 1)
	private String monthName;
	private Day[][] calendar;
	
	public MonthlyCalendarSimpleCorrect(String theMonthName, int theNumberOfDays, int theStartingDay) {
		monthName = theMonthName;
		numberOfDays = theNumberOfDays;
		startingDayNum = theStartingDay;
		
		// create the two-dimensional array with Day
		// objects.  Each week has an array with a fixed length
		// of days with null days when there aren't any.
		calendar = new Day[NUMBER_OF_WEEKS][];
		int currentDayNumber = 1;
		int dayIndex = 0;
		for (int week=0; week<NUMBER_OF_WEEKS; week++) {
			calendar[week] = new Day[DAYS_PER_WEEK];
			
			// Create the Day objects for the current week
			for (int dayOfWeek=0; dayOfWeek<DAYS_PER_WEEK; dayOfWeek++) {
				if (dayIndex >= (startingDayNum - 1)) {
					calendar[week][dayOfWeek] = new Day(mapIntToDayName(dayOfWeek), currentDayNumber);
					currentDayNumber++;
				}
				dayIndex++;
			}
		}
	}
	
	public String mapIntToDayName(int value) {
		String[] dayNames = {"Sunday", "Monday", "Tuesday", "Wednesday", 
				"Thursday", "Friday", "Saturday"};
		return dayNames[value];
	}
	
	public void addAppointment(int theDayNumber, String description) {
		for (int weekNum=0; weekNum<calendar.length; weekNum++) {
			for (int dayNum=0; dayNum<calendar[weekNum].length; dayNum++) {
				Day day = calendar[weekNum][dayNum];
				if ((day != null) && (day.getDayNumber() == theDayNumber)) {
					day.addAppointment(description);
				}
			}
		}
	}
	
	public String toString() {
		String result = monthName + "\n";
		for (int weekNum=0; weekNum<calendar.length; weekNum++) {
			result += "Week[" + (weekNum+1) + "]\n";
			for (int dayNum=0; dayNum<calendar[weekNum].length; dayNum++) {
				Day day = calendar[weekNum][dayNum];
				if ((day != null) && (day.anyAppointments())) {
					result += "  " + calendar[weekNum][dayNum];
				}
			}
		}
		
		return result;	
	}
	
	public static void main(String[] args) {
		MonthlyCalendarSimpleCorrect monthlyCalendar = new MonthlyCalendarSimpleCorrect("May", 31, 6);
		
		monthlyCalendar.addAppointment(2, "Clean Car");
		monthlyCalendar.addAppointment(2, "Pay Mortgage");
		monthlyCalendar.addAppointment(3, "Parent Meeting");
		monthlyCalendar.addAppointment(28, "Submit project");
		
		System.out.println(monthlyCalendar);
	}
}