/**
* Copyright © 2002 Instituto Superior Técnico
*
* This file is part of FenixEdu Academic.
*
* FenixEdu Academic is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* FenixEdu Academic is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FenixEdu Academic. If not, see <http://www.gnu.org/licenses/>.
*/
package org.fenixedu.academic.domain.util.icalendar;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.List;
import java.util.Locale;
import net.fortuna.ical4j.model.Calendar;
import net.fortuna.ical4j.model.Date;
import net.fortuna.ical4j.model.DateTime;
import net.fortuna.ical4j.model.TimeZone;
import net.fortuna.ical4j.model.TimeZoneRegistryFactory;
import net.fortuna.ical4j.model.component.VEvent;
import net.fortuna.ical4j.model.component.VTimeZone;
import net.fortuna.ical4j.model.property.CalScale;
import net.fortuna.ical4j.model.property.Description;
import net.fortuna.ical4j.model.property.Location;
import net.fortuna.ical4j.model.property.ProdId;
import net.fortuna.ical4j.model.property.Uid;
import net.fortuna.ical4j.model.property.Url;
import net.fortuna.ical4j.model.property.Version;
import org.fenixedu.academic.domain.organizationalStructure.Unit;
public class CalendarFactory {
public static String PROD_ID_APPLICATION = "Sistema Fenix";
public static TimeZone TIMEZONE = TimeZoneRegistryFactory.getInstance().createRegistry().getTimeZone("Europe/Lisbon");
private static String digest(String obj) {
byte[] defaultBytes = obj.getBytes();
try {
MessageDigest algorithm = MessageDigest.getInstance("MD5");
algorithm.reset();
algorithm.update(defaultBytes);
byte messageDigest[] = algorithm.digest();
StringBuffer hexString = new StringBuffer();
for (byte element : messageDigest) {
hexString.append(Integer.toHexString(0xFF & element));
}
String foo = messageDigest.toString();
obj = hexString + "";
} catch (NoSuchAlgorithmException nsae) {
}
return obj;
}
private static VEvent convertEventBean(EventBean event) {
Date begin;
Date end;
if (event.isAllDay()) {
begin = new Date(event.getBegin().toCalendar(new Locale("pt")).getTime());
end = new Date(event.getEnd().toCalendar(new Locale("pt")).getTime());
} else {
begin = new DateTime(event.getBegin().toCalendar(new Locale("pt")).getTime());
end = new DateTime(event.getEnd().toCalendar(new Locale("pt")).getTime());
}
VEvent vEvent = new VEvent(begin, end, event.getTitle());
vEvent.getStartDate().setTimeZone(TIMEZONE);
vEvent.getEndDate().setTimeZone(TIMEZONE);
if (event.getLocation() != null) {
vEvent.getProperties().add(new Location(event.getLocation()));
}
if (event.getUrl() != null) {
try {
vEvent.getProperties().add(new Url(new URI(event.getUrl())));
} catch (URISyntaxException e) {
}
}
if (event.getNote() != null) {
vEvent.getProperties().add(new Description(event.getNote()));
}
Uid uid = new Uid(digest(event.getTitle() + "-" + begin.toGMTString() + "-" + end.toGMTString()));
vEvent.getProperties().add(uid);
return vEvent;
}
public static Calendar createCalendar(List<EventBean> events) {
final String prodIdCompany = Unit.getInstitutionName().getContent();
Calendar calendar = new Calendar();
calendar.getProperties().add(new ProdId("-//" + prodIdCompany + "//" + PROD_ID_APPLICATION + "//PT"));
calendar.getProperties().add(Version.VERSION_2_0);
calendar.getProperties().add(CalScale.GREGORIAN);
VTimeZone tz = TIMEZONE.getVTimeZone();
calendar.getComponents().add(tz);
for (EventBean eventBean : events) {
calendar.getComponents().add(convertEventBean(eventBean));
}
return calendar;
}
}