* Copyright 2016 KairosDB Authors
 *    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 com.max256.abhot.core.telnet;

import com.google.inject.Inject;
import com.google.inject.name.Named;
import org.jboss.netty.channel.Channel;
import com.max256.abhot.core.DataPoint;
import com.max256.abhot.core.DataPointSet;
import com.max256.abhot.core.datapoints.LongDataPointFactory;
import com.max256.abhot.core.exception.DatastoreException;
import com.max256.abhot.core.reporting.KairosMetricReporter;

import java.util.Collections;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import static com.max256.abhot.util.Preconditions.checkNotNullOrEmpty;

public class VersionCommand implements TelnetCommand, KairosMetricReporter
	private AtomicInteger m_counter = new AtomicInteger();
	private final LongDataPointFactory m_dataPointFactory;
	private String m_hostName;

	public VersionCommand(@Named("HOSTNAME") String hostname, LongDataPointFactory factory)
		m_hostName = hostname;
		m_dataPointFactory = factory;

	public void execute(Channel chan, String[] command) throws DatastoreException
		if (chan.isConnected())
			Package thisPackage = getClass().getPackage();
			String versionString = thisPackage.getImplementationTitle()+" "+thisPackage.getImplementationVersion();

	public String getCommand()
		return ("version");

	public List<DataPointSet> getMetrics(long now)
		DataPointSet dps = new DataPointSet(REPORTING_METRIC_NAME);
		dps.addTag("host", m_hostName);
		dps.addTag("method", "version");
		dps.addDataPoint(m_dataPointFactory.createDataPoint(now, m_counter.getAndSet(0)));

		return (Collections.singletonList(dps));