package net.sourceforge.fenixedu.domain.notifications;

import java.text.MessageFormat;
import java.util.ResourceBundle;

import net.sourceforge.fenixedu.domain.RootDomainObject;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;

import org.joda.time.DateTime;
import org.joda.time.DurationFieldType;
import org.joda.time.Minutes;
import org.joda.time.Period;

import pt.utl.ist.fenix.tools.util.i18n.Language;

public class SystemNotifier extends SystemNotifier_Base {

	public SystemNotifier() {
		super();
		if (RootDomainObject.getInstance().getSystemNotifier() != null) {
			throw new DomainException("There's already a system notifier");
		}

		setRootDomainObject(RootDomainObject.getInstance());
	}

	public Integer getEstimateMinutesForDeploy() {
		DateTime now = new DateTime();
		DateTime timeStamp = getTimeStamp();

		return now.isBefore(timeStamp) ? new Period(now, timeStamp)
				.get(DurationFieldType.minutes()) : Minutes.ZERO.getMinutes();
	}

	public boolean isActive() {
		return Boolean.TRUE.equals(getNotifyUsers());
	}

	public String getMessage() {
		Integer estimateMinutesForDeploy = getEstimateMinutesForDeploy();
		StringBuilder notifyString = new StringBuilder();

		if (estimateMinutesForDeploy > 0) {
			notifyString.append(getResourceBundle().getString(
					"label.deploy.warning"));
			MessageFormat messageFormat = new MessageFormat(notifyString
					.toString());
			return messageFormat.format(new Object[] {
					estimateMinutesForDeploy, estimateMinutesForDeploy + 1 });
		} else {
			notifyString.append(getResourceBundle().getString(
					"label.deploy.warning.moment"));
			return notifyString.toString();
		}

	}

	private ResourceBundle getResourceBundle() {
		return ResourceBundle.getBundle("resources.ApplicationResources",
				Language.getLocale());
	}

}