/*
 * Copyright 2014 - 2016 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.protocol;

import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
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.regex.Pattern;

public class TelicProtocolDecoder extends BaseProtocolDecoder {

    public TelicProtocolDecoder(TelicProtocol protocol) {
        super(protocol);
    }

    private static final Pattern PATTERN = new PatternBuilder()
            .number("dddd")
            .number("(d{6})")                    // device id
            .number("(d+),")                     // type
            .number("d{12},")                    // event time
            .number("d+,")
            .number("(dd)(dd)(dd)")              // date
            .number("(dd)(dd)(dd),")             // time
            .groupBegin()
            .number("(ddd)(dd)(dddd),")          // longitude
            .number("(dd)(dd)(dddd),")           // latitude
            .or()
            .number("(-?d+),")                   // longitude
            .number("(-?d+),")                   // latitude
            .groupEnd()
            .number("(d),")                      // validity
            .number("(d+),")                     // speed
            .number("(d+),")                     // course
            .number("(d+),")                     // satellites
            .expression("(?:[^,]*,){7}")
            .number("(d+),")                     // battery
            .expression("[^,]*,")
            .number("(d+),")                     // external
            .any()
            .compile();

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

        Parser parser = new Parser(PATTERN, (String) msg);
        if (!parser.matches()) {
            return null;
        }

        Position position = new Position();
        position.setProtocol(getProtocolName());

        if (!identify(parser.next(), channel, remoteAddress)) {
            return null;
        }
        position.setDeviceId(getDeviceId());

        position.set(Position.KEY_TYPE, parser.next());

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

        if (parser.hasNext(6)) {
            position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_MIN_MIN));
            position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_MIN_MIN));
        }

        if (parser.hasNext(2)) {
            position.setLongitude(parser.nextDouble() / 10000);
            position.setLatitude(parser.nextDouble() / 10000);
        }

        position.setValid(parser.nextInt() != 1);
        position.setSpeed(parser.nextDouble());
        position.setCourse(parser.nextDouble());

        position.set(Position.KEY_SATELLITES, parser.next());
        position.set(Position.KEY_BATTERY, 3.4 + parser.nextInt() * 0.00345);
        position.set(Position.KEY_POWER, 6.0 + parser.nextInt() * 0.125);

        return position;
    }

}