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/*
* Copyright 2016 - 2023 Anton Tananaev (anton@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.handler.events;
import io.netty.channel.ChannelHandler;
import org.traccar.helper.model.PositionUtil;
import org.traccar.model.Calendar;
import org.traccar.model.Event;
import org.traccar.model.Geofence;
import org.traccar.model.Position;
import org.traccar.session.cache.CacheManager;
import javax.inject.Inject;
import javax.inject.Singleton;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@Singleton
@ChannelHandler.Sharable
public class GeofenceEventHandler extends BaseEventHandler {
private final CacheManager cacheManager;
@Inject
public GeofenceEventHandler(CacheManager cacheManager) {
this.cacheManager = cacheManager;
}
@Override
protected Map<Event, Position> analyzePosition(Position position) {
if (!PositionUtil.isLatest(cacheManager, position)) {
return null;
}
List<Long> oldGeofences = new ArrayList<>();
Position lastPosition = cacheManager.getPosition(position.getDeviceId());
if (lastPosition != null && lastPosition.getGeofenceIds() != null) {
oldGeofences.addAll(lastPosition.getGeofenceIds());
}
List<Long> newGeofences = new ArrayList<>();
if (position.getGeofenceIds() != null) {
newGeofences.addAll(position.getGeofenceIds());
newGeofences.removeAll(oldGeofences);
oldGeofences.removeAll(position.getGeofenceIds());
}
Map<Event, Position> events = new HashMap<>();
for (long geofenceId : oldGeofences) {
Geofence geofence = cacheManager.getObject(Geofence.class, geofenceId);
if (geofence != null) {
long calendarId = geofence.getCalendarId();
Calendar calendar = calendarId != 0 ? cacheManager.getObject(Calendar.class, calendarId) : null;
if (calendar == null || calendar.checkMoment(position.getFixTime())) {
Event event = new Event(Event.TYPE_GEOFENCE_EXIT, position);
event.setGeofenceId(geofenceId);
events.put(event, position);
}
}
}
for (long geofenceId : newGeofences) {
long calendarId = cacheManager.getObject(Geofence.class, geofenceId).getCalendarId();
Calendar calendar = calendarId != 0 ? cacheManager.getObject(Calendar.class, calendarId) : null;
if (calendar == null || calendar.checkMoment(position.getFixTime())) {
Event event = new Event(Event.TYPE_GEOFENCE_ENTER, position);
event.setGeofenceId(geofenceId);
events.put(event, position);
}
}
return events;
}
}
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