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/*
* Copyright 2022 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.protocol;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.Protocol;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import javax.json.Json;
import javax.json.JsonObject;
import java.io.StringReader;
import java.net.SocketAddress;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
public class TeraTrackProtocolDecoder extends BaseProtocolDecoder {
public TeraTrackProtocolDecoder(Protocol protocol) {
super(protocol);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
JsonObject json = Json.createReader(new StringReader((String) msg)).readObject();
String deviceId = json.getString("MDeviceID");
String imei = json.getString("IMEI");
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, deviceId, imei);
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
position.setTime(dateFormat.parse(json.getString("DateTime")));
position.setValid(true);
double latitude = Double.parseDouble(json.getString("Latitude"));
position.setLatitude(json.getString("LatitudeState").equals("0") ? -latitude : latitude);
double longitude = Double.parseDouble(json.getString("Longitude"));
position.setLongitude(json.getString("LongitudeState").equals("0") ? -longitude : longitude);
position.setSpeed(UnitsConverter.knotsFromKph(Integer.parseInt(json.getString("Speed"))));
position.set(Position.KEY_ODOMETER, Integer.parseInt(json.getString("Mileage")));
return position;
}
}
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