/**
 * $Id: $
 * $Date: $
 *
 */

package org.xmlsh.aws;

import java.io.IOException;
import java.util.List;
import javax.xml.stream.XMLStreamException;
import org.xmlsh.aws.util.AWSASCommand;
import org.xmlsh.core.CoreException;
import org.xmlsh.core.Options;
import org.xmlsh.core.SafeXMLStreamWriter;
import org.xmlsh.core.UnexpectedException;
import org.xmlsh.core.XValue;
import org.xmlsh.core.io.OutputPort;
import com.amazonaws.services.autoscaling.model.Activity;
import com.amazonaws.services.autoscaling.model.TerminateInstanceInAutoScalingGroupRequest;
import com.amazonaws.services.autoscaling.model.TerminateInstanceInAutoScalingGroupResult;
import net.sf.saxon.s9api.SaxonApiException;

public class asTerminateInstance extends AWSASCommand {

  @Override
  public int run(List<XValue> args) throws Exception {

    Options opts = getOptions("d=decrement");
    parseOptions(opts, args);
    setSerializeOpts(this.getSerializeOpts(opts));

    args = opts.getRemainingArgs();

    if(args.size() != 1)
      usage("as-terminate-instance -decrement instance-id");

    boolean bDecrement = opts.hasOpt("decrement");
    String instanceId = args.get(0).toString();

    try {
      getASClient(opts);
    } catch (UnexpectedException e) {
      usage(e.getLocalizedMessage());
      return 1;

    }

    int ret = terminate(instanceId, bDecrement);

    return ret;

  }

  private int terminate(String instanceId, boolean bDecrement)
      throws IOException, XMLStreamException, SaxonApiException, CoreException {

    OutputPort stdout = getStdout();
    mWriter = new SafeXMLStreamWriter(
        stdout.asXMLStreamWriter(getSerializeOpts()));

    startDocument();
    startElement(getName());

    traceCall("terminateInstanceInAutoScalingGroup");

    TerminateInstanceInAutoScalingGroupRequest request = new TerminateInstanceInAutoScalingGroupRequest()
        .withInstanceId(instanceId)
        .withShouldDecrementDesiredCapacity(bDecrement);
    TerminateInstanceInAutoScalingGroupResult result = getAWSClient()
        .terminateInstanceInAutoScalingGroup(request);

    writeActivity(result.getActivity());

    endElement();
    endDocument();

    closeWriter();

    stdout.writeSequenceTerminator(getSerializeOpts());

    return 0;

  }

  private void writeActivity(Activity activity) throws XMLStreamException {
    startElement("activity");
    attribute("activity-id", activity.getActivityId());
    attribute("group-name", activity.getAutoScalingGroupName());
    attribute("cause", activity.getCause());
    attribute("description", activity.getDescription());
    attribute("details", activity.getDetails());
    attribute("end-time", activity.getEndTime());
    attribute("progress", activity.getProgress());
    attribute("start-time", activity.getStartTime());
    attribute("status-code", activity.getStatusCode());
    attribute("status-message", activity.getStatusMessage());
    endElement();

  }

}

/*
 * Copyright (C) 2008-2014 David A. Lee.
 * 
 * The contents of this file are subject to the "Simplified BSD License" (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.opensource.org/licenses/bsd-license.php
 * 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied.
 * See the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is: all this file.
 *
 * The Initial Developer of the Original Code is David A. Lee
 *
 * Portions created by (your name) are Copyright (C) (your legal entity). All
 * Rights Reserved.
 *
 * Contributor(s): David A. Lee
 * 
 */