package de.mpg.mpiwg.berlin.mpdl.externalObjects.app;

import java.util.Date;

import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
import de.mpg.mpiwg.berlin.mpdl.util.XmlUtil;

public class ExtQuery extends ExtObject {
  private String queryType;  // url, fulltext or fulltextMorph
  private String queryName;  // optional: name of the query

  public static ExtQuery parseXmlStr(String xmlStr) throws ApplicationException {
    XmlUtil xmlUtil = XmlUtil.getInstance();
    String uid = xmlUtil.evaluateToString(xmlStr, "/object/@uid", null);
    String dateStr = xmlUtil.evaluateToString(xmlStr, "/object/@modificationDate", null);
    String docId = xmlUtil.evaluateToString(xmlStr, "/object/@documentId", null);
    String queryType = xmlUtil.evaluateToString(xmlStr, "/object/@queryType", null);
    String queryName = xmlUtil.evaluateToString(xmlStr, "/object/@queryName", null);
    String content = xmlUtil.evaluateToXmlString(xmlStr, "/object/content/*", null);
    Date modDate = xmlUtil.toDate(dateStr);
    if (uid == null || docId == null || queryType == null || content == null)
      throw new ApplicationException("one of the required fields could not be read in: " + xmlStr);
    ExtQuery e = new ExtQuery();
    e.setUid(uid);
    e.setModificationDate(modDate);
    e.setDocumentId(docId);
    e.setQueryType(queryType);
    e.setQueryName(queryName);
    e.setContent(content);
    return e;
  }

  public String toString() {
    return getXmlString();
  }
  
  public String getXmlString() {
    String xmlString = "<object";
    xmlString = xmlString + " type=\"" + "query" + "\"";
    if (uid != null)
      xmlString = xmlString + " uid=\"" + uid + "\"";
    if (queryType != null)
      xmlString = xmlString + " queryType=\"" + queryType + "\"";
    if (queryName != null)
      xmlString = xmlString + " queryName=\"" + queryName + "\"";
    if (modificationDate != null) {
      XmlUtil xmlUtil = XmlUtil.getInstance();
      String dateStr = xmlUtil.toXsDate(modificationDate);
      xmlString = xmlString + " modificationDate=\"" + dateStr + "\"";
    }
    if (documentId != null)
      xmlString = xmlString + " documentId=\"" + documentId + "\"";
    xmlString = xmlString + ">";
    if (content != null) {
      // write the uid and modificationDate into the content node
      if (! content.contains("uid")) {
        int firstClose = content.indexOf(">");
        if (firstClose != -1)
          content = content.substring(0, firstClose) + " uid=\"" + uid + "\" modificationDate=\"" + modificationDate + "\" " + content.substring(firstClose);
      }
      xmlString = xmlString + "<content>" + content + "</content>";
    }
    xmlString = xmlString + "</object>";
    return xmlString;
  }
  
  public String getQueryType() {
    return queryType;
  }

  public void setQueryType(String queryType) {
    this.queryType = queryType;
  }

  public String getQueryName() {
    return queryName;
  }

  public void setQueryName(String queryName) {
    this.queryName = queryName;
  }

}