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/*
* Copyright 2016 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.events;
import java.util.Collection;
import java.util.Collections;
import org.traccar.BaseEventHandler;
import org.traccar.Context;
import org.traccar.model.Device;
import org.traccar.model.DeviceState;
import org.traccar.model.Event;
import org.traccar.model.Position;
import org.traccar.reports.ReportUtils;
import org.traccar.reports.model.TripsConfig;
public class MotionEventHandler extends BaseEventHandler {
private TripsConfig tripsConfig;
public MotionEventHandler() {
if (Context.getConfig() != null) {
tripsConfig = ReportUtils.initTripsConfig();
}
}
public static Event updateMotionState(DeviceState deviceState, Position position, TripsConfig tripsConfig) {
Event result = null;
Boolean oldMotion = deviceState.getMotionState();
long currentTime = position.getFixTime().getTime();
boolean newMotion = position.getBoolean(Position.KEY_MOTION);
if (newMotion != oldMotion) {
if (deviceState.getMotionPosition() == null) {
deviceState.setMotionPosition(position);
}
} else {
deviceState.setMotionPosition(null);
}
Position potentialPosition = deviceState.getMotionPosition();
if (potentialPosition != null) {
long potentialTime = potentialPosition.getFixTime().getTime();
double distance = ReportUtils.calculateDistance(potentialPosition, position, false);
if (newMotion) {
if (potentialTime + tripsConfig.getMinimalTripDuration() <= currentTime
|| distance >= tripsConfig.getMinimalTripDistance()) {
result = new Event(Event.TYPE_DEVICE_MOVING, potentialPosition.getDeviceId(),
potentialPosition.getId());
deviceState.setMotionState(true);
deviceState.setMotionPosition(null);
}
} else {
if (potentialTime + tripsConfig.getMinimalParkingDuration() <= currentTime) {
result = new Event(Event.TYPE_DEVICE_STOPPED, potentialPosition.getDeviceId(),
potentialPosition.getId());
deviceState.setMotionState(false);
deviceState.setMotionPosition(null);
}
}
}
return result;
}
@Override
protected Collection<Event> analyzePosition(Position position) {
Device device = Context.getIdentityManager().getById(position.getDeviceId());
if (device == null) {
return null;
}
if (!Context.getIdentityManager().isLatestPosition(position) || !position.getValid()) {
return null;
}
Event result = null;
long deviceId = position.getDeviceId();
DeviceState deviceState = Context.getDeviceManager().getDeviceState(deviceId);
if (deviceState == null) {
deviceState = new DeviceState();
deviceState.setMotionState(position.getBoolean(Position.KEY_MOTION));
} else if (deviceState.getMotionState() == null) {
deviceState.setMotionState(position.getBoolean(Position.KEY_MOTION));
} else {
result = updateMotionState(deviceState, position, tripsConfig);
}
Context.getDeviceManager().setDeviceState(deviceId, deviceState);
if (result != null) {
return Collections.singleton(result);
}
return null;
}
}
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