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/*
* Copyright 2016 - 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.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.traccar.BaseProtocolEncoder;
import org.traccar.model.Command;
import org.traccar.Protocol;
import java.nio.charset.StandardCharsets;
public class NoranProtocolEncoder extends BaseProtocolEncoder {
public NoranProtocolEncoder(Protocol protocol) {
super(protocol);
}
private ByteBuf encodeContent(String content) {
ByteBuf buf = Unpooled.buffer(12 + 56);
buf.writeCharSequence("\r\n*KW", StandardCharsets.US_ASCII);
buf.writeByte(0);
buf.writeShortLE(buf.capacity());
buf.writeShortLE(NoranProtocolDecoder.MSG_CONTROL);
buf.writeInt(0); // gis ip
buf.writeShortLE(0); // gis port
buf.writeBytes(content.getBytes(StandardCharsets.US_ASCII));
buf.writerIndex(buf.writerIndex() + 50 - content.length());
buf.writeCharSequence("\r\n", StandardCharsets.US_ASCII);
return buf;
}
@Override
protected Object encodeCommand(Command command) {
return switch (command.getType()) {
case Command.TYPE_POSITION_SINGLE -> encodeContent("*KW,000,000,000000#");
case Command.TYPE_POSITION_PERIODIC -> {
int interval = command.getInteger(Command.KEY_FREQUENCY);
yield encodeContent("*KW,000,002,000000," + interval + "#");
}
case Command.TYPE_POSITION_STOP -> encodeContent("*KW,000,002,000000,0#");
case Command.TYPE_ENGINE_STOP -> encodeContent("*KW,000,007,000000,0#");
case Command.TYPE_ENGINE_RESUME -> encodeContent("*KW,000,007,000000,1#");
default -> null;
};
}
}
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