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/*
* Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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;
import java.util.Calendar;
import java.util.Formatter;
import java.util.Locale;
import java.util.TimeZone;
import org.traccar.helper.Crc;
import org.traccar.model.Device;
import org.traccar.model.Position;
public class WebDataHandler extends BaseDataHandler {
private final String url;
public WebDataHandler(String url) {
this.url = url;
}
private static String formatSentence(Position position) {
StringBuilder s = new StringBuilder("$GPRMC,");
try (Formatter f = new Formatter(s, Locale.ENGLISH)) {
Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"), Locale.ENGLISH);
calendar.setTimeInMillis(position.getFixTime().getTime());
f.format("%1$tH%1$tM%1$tS.%1$tL,A,", calendar);
double lat = position.getLatitude();
double lon = position.getLongitude();
f.format("%02d%07.4f,%c,", (int) Math.abs(lat), Math.abs(lat) % 1 * 60, lat < 0 ? 'S' : 'N');
f.format("%03d%07.4f,%c,", (int) Math.abs(lon), Math.abs(lon) % 1 * 60, lon < 0 ? 'W' : 'E');
f.format("%.2f,%.2f,", position.getSpeed(), position.getCourse());
f.format("%1$td%1$tm%1$ty,,", calendar);
}
s.append(Crc.nmeaChecksum(s.toString()));
return s.toString();
}
@Override
protected Position handlePosition(Position position) {
Device device = Context.getIdentityManager().getDeviceById(position.getDeviceId());
String request = url.
replace("{uniqueId}", device.getUniqueId()).
replace("{deviceId}", String.valueOf(device.getId())).
replace("{fixTime}", String.valueOf(position.getFixTime().getTime())).
replace("{latitude}", String.valueOf(position.getLatitude())).
replace("{longitude}", String.valueOf(position.getLongitude())).
replace("{gprmc}", formatSentence(position));
Context.getAsyncHttpClient().prepareGet(request).execute();
return position;
}
}
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