package org.xmlsh.aws;

import java.io.IOException;
import java.util.List;
import javax.xml.stream.XMLStreamException;
import org.xmlsh.aws.util.AWSS3Command;
import org.xmlsh.aws.util.S3Path;
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.s3.model.GetObjectMetadataRequest;
import com.amazonaws.services.s3.model.ObjectMetadata;
import net.sf.saxon.s9api.SaxonApiException;

public class s3GetObjectMetadata extends AWSS3Command {

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

    Options opts = getOptions();
    parseOptions(opts, args);

    args = opts.getRemainingArgs();

    setSerializeOpts(this.getSerializeOpts(opts));

    try {
      getS3Client(opts);
    } catch (UnexpectedException e) {
      usage(e.getLocalizedMessage());
      return 1;

    }

    S3Path src;

    switch(args.size()){
    case 0:
      src = getS3Path();
    case 1:
      src = getS3Path(args.get(0));
      break;
    default:

      usage();
      return 1;

    }

    OutputPort metaPort = getStdout();

    int ret = 0;
    try {
      ret = getMetadata(src, metaPort);
    } catch (Exception e) {
      mShell.printErr("Exception getting metadata from " + src);
      ret = 1;

    }

    return ret;

  }

  private int getMetadata(S3Path src, OutputPort metaPort)
      throws CoreException, IOException, XMLStreamException, SaxonApiException {

    GetObjectMetadataRequest request = new GetObjectMetadataRequest(
        src.getBucket(), src.getKey());

    traceCall("getObjectMetadata");

    ObjectMetadata data = getAWSClient().getObjectMetadata(request);

    mWriter = metaPort.asXMLStreamWriter(getSerializeOpts());
    startDocument();
    writeMeta(data);
    endDocument();
    mWriter.close();

    return 0;

  }

  @Override
  public void usage() {
    super.usage("Usage: s3get source [target]");
  }

}