package org.xmlsh.aws;

import java.io.IOException;
import java.util.List;
import javax.xml.stream.XMLStreamException;
import org.xmlsh.aws.util.AWSSNSCommand;
import org.xmlsh.core.CoreException;
import org.xmlsh.core.Options;
import org.xmlsh.core.UnexpectedException;
import org.xmlsh.core.XValue;
import org.xmlsh.core.io.OutputPort;
import com.amazonaws.services.sns.model.SubscribeRequest;
import com.amazonaws.services.sns.model.SubscribeResult;
import net.sf.saxon.s9api.SaxonApiException;

public class snsSubscribe extends AWSSNSCommand {

  /**
   * @param args
   * @throws IOException
   */
  @Override
  public int run(List<XValue> args) throws Exception {

    Options opts = getOptions("t=topic:,p=protocol:,e=endpoint-arn:");
    opts.parse(args);

    args = opts.getRemainingArgs();

    setSerializeOpts(this.getSerializeOpts(opts));

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

    }

    int ret;

    ret = subscribe(opts.getOptStringRequired("topic"),
        opts.getOptStringRequired("protocol"),
        opts.getOptStringRequired("endpoint-arn"));

    return ret;

  }

  private int subscribe(String arn, String protocol, String endpoint)
      throws IOException, XMLStreamException, SaxonApiException, CoreException {

    SubscribeRequest request = new SubscribeRequest(arn, protocol, endpoint);
    traceCall("subscribe");

    SubscribeResult result = getAWSClient().subscribe(request);

    OutputPort stdout = this.getStdout();
    mWriter = stdout.asXMLStreamWriter(getSerializeOpts());

    startDocument();
    startElement(getName());

    startElement("subscription");
    attribute("arn", result.getSubscriptionArn());

    endElement();

    endElement();
    endDocument();
    closeWriter();
    stdout.writeSequenceTerminator(getSerializeOpts());

    return 0;

  }

}