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.UnsubscribeRequest;
import net.sf.saxon.s9api.SaxonApiException;

public class snsUnsubscribe extends AWSSNSCommand {

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

    Options opts = getOptions("t=topic:");
    opts.parse(args);

    args = opts.getRemainingArgs();
    String topic = opts.getOptString("topic", null);

    if(topic == null) {
      if(args.size() != 1) {
        usage();
        return 1;
      }
      topic = args.get(0).toString();
    }

    setSerializeOpts(this.getSerializeOpts(opts));

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

    }

    int ret;

    ret = unsubscribe(topic);

    return ret;

  }

  private int unsubscribe(String arn)
      throws IOException, XMLStreamException, SaxonApiException, CoreException {

    UnsubscribeRequest request = new UnsubscribeRequest(arn);
    traceCall("unsubscribe");

    getAWSClient().unsubscribe(request);

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

    startDocument();
    startElement(getName());
    endElement();
    endDocument();
    closeWriter();
    stdout.writeSequenceTerminator(getSerializeOpts());

    return 0;

  }

}