/**
* 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.service.services.messaging;
import java.text.MessageFormat;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import org.fenixedu.academic.domain.Person;
import org.fenixedu.academic.domain.messaging.ConversationMessage;
import org.fenixedu.academic.domain.messaging.ConversationThread;
import org.fenixedu.academic.domain.messaging.ForumSubscription;
import org.fenixedu.academic.domain.person.RoleType;
import org.fenixedu.academic.domain.util.email.Message;
import org.fenixedu.academic.domain.util.email.Recipient;
import org.fenixedu.academic.domain.util.email.SystemSender;
import org.fenixedu.academic.util.Bundle;
import org.fenixedu.academic.util.HtmlToTextConverterUtil;
import org.fenixedu.bennu.core.domain.Bennu;
import org.fenixedu.bennu.core.domain.User;
import org.fenixedu.bennu.core.groups.UserGroup;
import org.fenixedu.bennu.core.i18n.BundleUtil;
/**
* @author <a href="mailto:goncalo@ist.utl.pt"> Goncalo Luiz</a><br/>
* Created on May 23, 2006, 3:48:23 PM
*
*/
public abstract class ForumService {
protected static final Locale DEFAULT_LOCALE = new Locale("pt");
private static String getString(final String key) {
return BundleUtil.getString(Bundle.GLOBAL, DEFAULT_LOCALE, key);
}
protected void sendNotifications(ConversationMessage conversationMessage) {
this.notifyEmailSubscribers(conversationMessage);
this.notifyLastReplier(conversationMessage);
}
private void notifyEmailSubscribers(ConversationMessage conversationMessage) {
final Set<User> readers = conversationMessage.getConversationThread().getForum().getReadersGroup().getMembers();
final Set<Person> teachers = new HashSet<Person>();
final Set<Person> students = new HashSet<Person>();
final Set<ForumSubscription> subscriptionsToRemove = new HashSet<ForumSubscription>();
for (final ForumSubscription subscription : conversationMessage.getConversationThread().getForum()
.getForumSubscriptionsSet()) {
Person subscriber = subscription.getPerson();
if (!readers.contains(subscriber.getUser())) {
subscriptionsToRemove.add(subscription);
}
if (subscription.getReceivePostsByEmail()) {
if (subscriber.getEmail() == null) {
subscription.setReceivePostsByEmail(false);
} else {
if (subscriber.hasRole(RoleType.TEACHER)) {
teachers.add(subscriber);
} else {
students.add(subscriber);
}
}
}
}
for (final ForumSubscription subscriptionToRemove : subscriptionsToRemove) {
conversationMessage.getConversationThread().getForum().removeForumSubscriptions(subscriptionToRemove);
subscriptionToRemove.delete();
}
sendEmailWithConversationMessage(teachers, students, conversationMessage);
}
private void notifyLastReplier(ConversationMessage conversationMessage) {
ConversationMessage nextToLastConversationMessage =
conversationMessage.getConversationThread().getNextToLastConversationMessage();
if (nextToLastConversationMessage != null) {
Person nextToLastMessageReplier = nextToLastConversationMessage.getCreator();
if (!conversationMessage.getConversationThread().getForum()
.isPersonReceivingMessagesByEmail(nextToLastMessageReplier)) {
final Set<Person> teachers = new HashSet<Person>();
final Set<Person> students = new HashSet<Person>();
if (nextToLastMessageReplier.hasRole(RoleType.TEACHER)) {
teachers.add(nextToLastMessageReplier);
} else {
students.add(nextToLastMessageReplier);
}
sendEmailWithConversationMessage(teachers, students, conversationMessage);
}
}
}
private void sendEmailToPersons(Set<Person> persons, String personsName, String subject, String body) {
if (!persons.isEmpty()) {
final Recipient recipient = new Recipient(getString("label.teachers"), UserGroup.of(Person.convertToUsers(persons)));
SystemSender systemSender = Bennu.getInstance().getSystemSender();
new Message(systemSender, systemSender.getConcreteReplyTos(), recipient.asCollection(), subject, body, "");
}
}
private void sendEmailWithConversationMessage(Set<Person> teachers, Set<Person> students,
ConversationMessage conversationMessage) {
final String emailSubject = getEmailFormattedSubject(conversationMessage.getConversationThread());
sendEmailToPersons(teachers, getString("label.teachers"), emailSubject, getEmailFormattedBody(conversationMessage, true));
sendEmailToPersons(students, getString("label.students"), emailSubject, getEmailFormattedBody(conversationMessage, false));
}
private String getEmailFormattedSubject(ConversationThread conversationThread) {
String emailSubject = MessageFormat.format(getString("forum.email.subject"), conversationThread.getTitle());
return emailSubject;
}
private String getEmailFormattedBody(ConversationMessage conversationMessage, boolean isForTeacher) {
String emailBodyAsText = HtmlToTextConverterUtil.convertToText(conversationMessage.getBody().getContent());
String emailFormattedBody =
MessageFormat.format(getString("forum.email.body"), conversationMessage.getCreator().getName(),
conversationMessage.getConversationThread().getTitle(), conversationMessage.getConversationThread()
.getForum().getName(), emailBodyAsText);
return emailFormattedBody;
}
}