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/*
* Copyright 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.protocol;
import io.netty.handler.codec.mqtt.MqttPublishMessage;
import jakarta.json.Json;
import jakarta.json.JsonObject;
import org.apache.kafka.common.utils.ByteBufferInputStream;
import org.traccar.BaseMqttProtocolDecoder;
import org.traccar.Protocol;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import org.traccar.session.DeviceSession;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
public class PuiProtocolDecoder extends BaseMqttProtocolDecoder {
public PuiProtocolDecoder(Protocol protocol) {
super(protocol);
}
@Override
protected Object decode(DeviceSession deviceSession, MqttPublishMessage message) throws Exception {
JsonObject json;
try (ByteBufferInputStream inputStream = new ByteBufferInputStream(message.payload().nioBuffer())) {
json = Json.createReader(inputStream).readObject();
}
String type = json.getString("rpt");
switch (type) {
case "hf":
case "loc":
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setValid(true);
DateFormat dateFormat = new SimpleDateFormat("yyyyMMdd'T'HHmmss.SSS'Z'");
position.setTime(dateFormat.parse(json.getString("ts")));
JsonObject location = json.getJsonObject("location");
position.setLatitude(location.getJsonNumber("lat").doubleValue());
position.setLongitude(location.getJsonNumber("lon").doubleValue());
position.setCourse(json.getInt("bear"));
position.setSpeed(UnitsConverter.knotsFromCps(json.getInt("spd")));
position.set(Position.KEY_IGNITION, json.getString("ign").equals("on"));
return position;
default:
return null;
}
}
}
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