/*
 * Copyright 2019 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.NetworkMessage;
import org.traccar.Protocol;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;

import java.net.SocketAddress;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Pattern;

public class RaceDynamicsProtocolDecoder extends BaseProtocolDecoder {

    public RaceDynamicsProtocolDecoder(Protocol protocol) {
        super(protocol);
    }

    public static final int MSG_LOGIN = 12;
    public static final int MSG_LOCATION = 15;

    private static final Pattern PATTERN_LOGIN = new PatternBuilder()
            .text("$GPRMC,")
            .number("d+,")                       // type
            .number("d{6},")                     // date
            .number("d{6},")                     // time
            .number("(d{15}),")
            .compile();

    private static final Pattern PATTERN_LOCATION = new PatternBuilder()
            .number("(dd)(dd)(dd),")             // time (hhmmss)
            .expression("([AV]),")               // validity
            .number("(dd)(dd.d+),")              // latitude
            .expression("([NS]),")
            .number("(ddd)(dd.d+),")             // longitude
            .expression("([EW]),")
            .number("(d+),")                     // speed
            .number("(dd)(dd)(dd),")             // date (ddmmyy)
            .number("(-?d+),")                   // altitude
            .number("(d+),")                     // satellites
            .number("([01]),")                   // ignition
            .number("(d+),")                     // index
            .text("%,")
            .number("([^,]+),")                  // ibutton
            .number("d+,")                       // acceleration
            .number("d+,")                       // deceleration
            .number("[01],")                     // cruise control
            .number("[01],")                     // seat belt
            .number("[01],")                     // wrong ibutton
            .number("(d+),")                     // power
            .number("[01],")                     // power status
            .number("(d+),")                     // battery
            .any()
            .compile();

    @Override
    protected Object decode(
            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

        String sentence = (String) msg;

        int type = Integer.parseInt(sentence.substring(7, 9));

        if (type == MSG_LOGIN) {

            Parser parser = new Parser(PATTERN_LOGIN, sentence);
            if (parser.matches()) {
                getDeviceSession(channel, remoteAddress, parser.next());
                if (channel != null) {
                    channel.writeAndFlush(new NetworkMessage(sentence + "\r\n", remoteAddress));
                }
            }

        } else if (type == MSG_LOCATION) {

            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
            if (deviceSession == null) {
                return null;
            }

            List<Position> positions = new LinkedList<>();

            for (String data : sentence.substring(17, sentence.length() - 3).split(",#,#,")) {
                Parser parser = new Parser(PATTERN_LOCATION, data);
                if (parser.matches()) {

                    Position position = new Position(getProtocolName());
                    position.setDeviceId(deviceSession.getDeviceId());

                    DateBuilder dateBuilder = new DateBuilder()
                            .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());

                    position.setValid(parser.next().equals("A"));
                    position.setLatitude(parser.nextCoordinate());
                    position.setLongitude(parser.nextCoordinate());
                    position.setSpeed(parser.nextDouble());

                    dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
                    position.setTime(dateBuilder.getDate());

                    position.setAltitude(parser.nextInt());
                    position.set(Position.KEY_SATELLITES, parser.nextInt());
                    position.set(Position.KEY_IGNITION, parser.nextInt() == 1);
                    position.set(Position.KEY_INDEX, parser.nextInt());
                    position.set(Position.KEY_DRIVER_UNIQUE_ID, parser.next());
                    position.set(Position.KEY_POWER, parser.nextInt() * 0.01);
                    position.set(Position.KEY_BATTERY, parser.nextInt() * 0.01);

                    positions.add(position);

                }
            }

            return positions;

        }

        return null;
    }

}

@@ -995,16 +995,39 @@
 ddress;%0A
+import java.util.Date;%0A
 import j
@@ -1043,24 +1043,24 @@
 LinkedList;%0A
-
 import java.
@@ -3078,24 +3078,413 @@
 compile();%0A%0A
+    private String imei;%0A%0A    private void sendResponse(Channel channel, SocketAddress remoteAddress, int type) %7B%0A        if (channel != null) %7B%0A            String response = String.format(%0A                    %22$GPRMC,%251$d,%252$td%252$tm%252$ty,%252$tH%252$tM%252$tS,%253$s,%5Cr%5Cn%22, type, new Date(), imei);%0A            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));%0A        %7D%0A    %7D%0A%0A
     @Overrid
@@ -3864,48 +3864,14 @@
     
-getDeviceSession(channel, remoteAddress,
+imei =
  par
@@ -3872,33 +3872,32 @@
  = parser.next()
-)
 ;%0A              
@@ -3902,145 +3902,115 @@
     
-if (channel != null) %7B%0A                    channel.writeAndFlush(new NetworkMessage(sentence + %22%5Cr%5Cn%22, remoteAddress));%0A                %7D
+getDeviceSession(channel, remoteAddress, imei);%0A                sendResponse(channel, remoteAddress, type);
 %0A   
@@ -5816,24 +5816,24 @@
           %7D%0A
-
             
@@ -5827,32 +5827,89 @@
 %0A            %7D%0A%0A
+            sendResponse(channel, remoteAddress, type);%0A%0A
             retu

Add missing response