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/*
* Copyright 2013 - 2017 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 org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.model.Position;
import java.text.ParseException;
import java.net.SocketAddress;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
import org.traccar.helper.UnitsConverter;
public class SviasProtocolDecoder extends BaseProtocolDecoder {
public SviasProtocolDecoder(SviasProtocol protocol) {
super(protocol);
}
private void sendResponse(Channel channel, String prefix) {
if (channel != null) {
channel.write(prefix);
}
}
private double convertCoordinates(long v) {
float a = (float) v / 1.0E7F;
int b = (int) (v / 10000000L);
float c = a - b;
float d = (float) (c * 1.6666666666666667D);
int e = (int) (v / 10000000L);
float f = d + e;
return Double.valueOf(f);
}
private Position decodePosition(Channel channel, SocketAddress remoteAddress, String substring)
throws ParseException {
int index = 0;
String[] values = substring.split(",");
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, values[3]);
if (deviceSession == null) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
String versionHw = values[index++].replaceAll("[^0-9]", "");
String versionSw = values[index++];
position.set(Position.KEY_INDEX, Integer.valueOf(values[index++]));
String imei = values[index++];
position.set(Position.KEY_TYPE, values[index++]);
DateFormat dateFormat = new SimpleDateFormat("ddMMyyHHmmss");
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
String date = String.format("%06d", Integer.parseInt(values[index++]));
String time = String.format("%06d", Integer.parseInt(values[index++]));
position.setTime(dateFormat.parse(date + time));
position.setLatitude(convertCoordinates(Long.valueOf(values[index++])));
position.setLongitude(convertCoordinates(Long.valueOf(values[index++])));
position.setSpeed(UnitsConverter.knotsFromKph(Integer.valueOf(values[index++]) / 100));
position.setCourse(Integer.valueOf(values[index++]) / 100);
position.set(Position.KEY_ODOMETER, Integer.valueOf(values[index++]));
String input = new StringBuilder(String.format("%08d",
Integer.parseInt(values[index++]))).reverse().toString();
String output = new StringBuilder(String.format("%08d",
Integer.parseInt(values[index++]))).reverse().toString();
if (input.substring(0).equals("1")) {
position.set(Position.KEY_ALARM, Position.ALARM_SOS);
}
position.set(Position.KEY_IGNITION, input.substring(4).equals("1"));
position.setValid(output.substring(0).equals("1"));
position.set(Position.KEY_POWER, Integer.valueOf(values[index++]) / 100);
position.set(Position.KEY_BATTERY_LEVEL, Double.parseDouble(values[index++]));
position.set(Position.KEY_RSSI, Integer.valueOf(values[index++]));
if (values.length == 22) {
String driverUniqueId = values[index++];
if (!driverUniqueId.isEmpty()) {
position.set(Position.KEY_DRIVER_UNIQUE_ID, driverUniqueId);
}
}
return position;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
String sentence = (String) msg;
if (sentence.contains(":")) {
String[] values = sentence.substring(1).split(":");
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, values[1]);
if (deviceSession != null) {
sendResponse(channel, "@");
}
} else {
Position position = decodePosition(channel, remoteAddress, sentence.substring(1));
if (position != null) {
sendResponse(channel, "@");
return position;
}
}
return null;
}
}
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