package be.re.app.davbox;

import be.re.webdav.Client;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.w3c.dom.Document;
import org.w3c.dom.Node;



/**
 * Performs a search on Pincette.
 * @author Werner Donn\u00e9
 */

public class PincettePlugin implements Plugin

{

  private Set<URL>	notSupported = new HashSet<URL>();



  private static Document
  createQuery(long time)
  {
    Document	document = be.re.webdav.Util.createReDocument("simple-search");

    document.getDocumentElement().appendChild
    (
      document.createElementNS(be.re.webdav.Constants.URI, "field")
    ).appendChild(document.createTextNode("getlastmodified"));

    document.getDocumentElement().appendChild
    (
      document.createElementNS(be.re.webdav.Constants.URI, "op")
    ).appendChild(document.createTextNode(">"));

    document.getDocumentElement().appendChild
    (
      document.createElementNS(be.re.webdav.Constants.URI, "value")
    ).appendChild
      (
        document.createTextNode(be.re.util.Util.createTimestamp(time))
      );

    return document;
  }



  public long
  getInterval()
  {
    return 0;
  }



  public URL[]
  getModified(URL url, long lastSynchronization) throws IOException
  {
    if (notSupported.contains(url))
    {
      return null;
    }

    Client		client = new Client();
    Client.Response	response =
      client.report(url, createQuery(lastSynchronization), null, null);

    try
    {
      if
      (
        response.getStatusCode() == 405	||
        response.getStatusCode() == 409	||
        response.getStatusCode() == 501
      )
      {
        notSupported.add(url);

        return null;
      }

      if (response.getStatusCode() == 207)
      {
        final List<URL>	result = new ArrayList<URL>();

        be.re.webdav.Util.readUrlList
        (
          url,
          response,
          new be.re.webdav.Util.UrlHandler()
          {
            public boolean
            handle(URL href)
            {
              result.add(href);

              return true;
            }
          },
          true
        );

        return result.toArray(new URL[0]);
      }

      return null;
    }

    finally
    {
      response.close();
    }
  }



  public static void
  main(String[] args) throws Exception
  {
    Plugins.register(new PincettePlugin());
  }

} // PincettePlugin