package pt.ist.fenixframework.plugins.scheduler.domain;

import org.joda.time.DateTime;

import dml-maven-plugin.pt.ist.fenixframework.plugins.scheduler.domain.TaskSchedule_Base;

public class TaskSchedule extends TaskSchedule_Base {

	public TaskSchedule(final Task task, final Integer minute, final Integer hour, final Integer day, final Integer month,
			final Integer dayofweek) {
		super();
		setTask(task);
		setMinute(minute);
		setHour(hour);
		setDay(day);
		setMonth(month);
		setDayofweek(dayofweek);
	}

	public boolean shouldRunNow() {
		return shouldRunNow(new DateTime());
	}

	public boolean shouldRunNow(final DateTime now) {
		final int min = now.getMinuteOfHour();
		final int hour = now.getHourOfDay();
		final int day = now.getDayOfMonth();
		final int month = now.getMonthOfYear();
		final int dayofweek = now.getDayOfWeek();

		if (matchField(getMinute(), min) && matchField(getHour(), hour) && matchField(getDay(), day)
				&& matchField(getMonth(), month) && matchField(getDayofweek(), dayofweek)) {

			final DateTime lastRun = getLastRun();
			return lastRun == null || nowIsAfterLastRun(now, lastRun);
		}

		return false;
	}

	private boolean matchField(final Integer field, final int value) {
		return field == null || field.intValue() == value;
	}

	private DateTime getLastRun() {
		return getTask().getLastRun();
	}

	private boolean nowIsAfterLastRun(final DateTime now, final DateTime lastRun) {
		if (now.getYear() > lastRun.getYear()) {
			return true;
		}
		if (now.getMonthOfYear() > lastRun.getMonthOfYear()) {
			return true;
		}
		if (now.getDayOfMonth() > lastRun.getDayOfMonth()) {
			return true;
		}
		if (now.getHourOfDay() > lastRun.getHourOfDay()) {
			return true;
		}
		if (now.getMinuteOfHour() > lastRun.getMinuteOfHour()) {
			return true;
		}
		return false;
	}

	public void delete() {
		removeTask();
		super.deleteDomainObject();
	}

}