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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.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.HttpResponseStatus;
import jakarta.json.Json;
import jakarta.json.JsonObject;
import org.traccar.BaseHttpProtocolDecoder;
import org.traccar.Protocol;
import org.traccar.model.Position;
import org.traccar.session.DeviceSession;
import java.io.StringReader;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
public class RamacProtocolDecoder extends BaseHttpProtocolDecoder {
private final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
public RamacProtocolDecoder(Protocol protocol) {
super(protocol);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
FullHttpRequest request = (FullHttpRequest) msg;
String content = request.content().toString(StandardCharsets.UTF_8);
JsonObject json = Json.createReader(new StringReader(content)).readObject();
String deviceId = json.getString("DeviceId");
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, deviceId);
if (deviceSession == null) {
sendResponse(channel, HttpResponseStatus.BAD_REQUEST);
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_TYPE, json.getInt("PacketType"));
position.set(Position.KEY_INDEX, json.getInt("SeqNumber"));
position.setDeviceTime(dateFormat.parse(json.getString("UpdateDate")));
int alert = json.getInt("Alert");
if (alert > 0) {
position.set("alert", alert);
String alertMessage = json.getString("AlertMessage");
if (!alertMessage.isEmpty()) {
position.set("alertMessage", alertMessage);
}
}
if (json.containsKey("GpsEvent")) {
position.set("gpsEvent", json.getInt("GpsEvent"));
if (json.containsKey("GpsEventText")) {
position.set("gpsEventText", json.getString("GpsEventText"));
}
}
if (json.containsKey("Event")) {
position.set(Position.KEY_EVENT, json.getInt("Event"));
}
if (json.containsKey("BatteryPercentage")) {
position.set(Position.KEY_BATTERY_LEVEL, json.getInt("BatteryPercentage"));
}
if (json.containsKey("Battery")) {
position.set(Position.KEY_BATTERY, json.getJsonNumber("Battery").doubleValue());
}
position.set("deviceType", json.getString("DeviceTypeText"));
if (json.containsKey("Latitude") && json.containsKey("Longitude")) {
position.setValid(true);
if (json.containsKey("LocationDateTime")) {
position.setFixTime(dateFormat.parse(json.getString("LocationDateTime")));
} else {
position.setFixTime(position.getDeviceTime());
}
position.setLatitude(json.getJsonNumber("Latitude").doubleValue());
position.setLongitude(json.getJsonNumber("Longitude").doubleValue());
} else {
getLastLocation(position, position.getDeviceTime());
}
sendResponse(
channel, HttpResponseStatus.OK,
Unpooled.copiedBuffer("{\"CaseID\":1,\"EventID\":1}", StandardCharsets.UTF_8));
return position;
}
}
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