package de.mpiwg.itgroup.eSciDoc.Tools.Pubman;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.xpath.XPath;

import de.mpiwg.itgroup.eSciDoc.Tools.EScidocBasicHandler;
import de.mpiwg.itgroup.eSciDoc.Tools.EScidocTools;
import de.mpiwg.itgroup.eSciDoc.exceptions.ESciDocXmlObjectException;
import de.mpiwg.itgroup.eSciDoc.utils.eSciDocXmlObject;

public class RepairPublishingInfoDate {

	/**
	 * @param args
	 * @throws ESciDocXmlObjectException
	 * @throws JDOMException
	 * @throws IOException
	 * @throws IllegalStateException
	 */
	public static void main(String[] args) throws IllegalStateException,
			IOException, JDOMException, ESciDocXmlObjectException {

		
		Logger logger = Logger.getRootLogger();
		logger.setLevel(Level.INFO);
	
		if(args.length<5){
			System.out.println("Usage: username password contextID (eg.escidoc:XXX) startrecord maximumrecords");
			System.exit(-1);
		}
		String MAX_REC = args[4];
		String start = args[3];
		String contextId = args[2];
		String username = args[0];
		String password = args[1];
		
		String objectXPath = "//escidocItem:item";

		EScidocBasicHandler connector = new EScidocBasicHandler(
				"escidoc.mpiwg-berlin.mpg.de", 8080, username,password);

		String query = "?maximumRecords=" + String.valueOf(MAX_REC)
				+ "&startRecord=" + String.valueOf(start);
		//String command = "/ir/context/escidoc:38279/resources/members";
		String command = "/ir/context/"+contextId+"/resources/members";
		//String command = "/ir/context/escidoc:79281/resources/members";
		System.out.println("search for:"+command+query);
		Integer i=0;
		for (eSciDocXmlObject obj : connector.getObjectsFromFilterResult(
				command + query, objectXPath)) {
			i++;
			Document doc = obj.getDocument();
			Boolean changed=false;
			XPath publishingInfoContentXPath = EScidocTools.getESciDocXpath("//publication:publication/dcterms:created");
			XPath publishingInfoContentXPathIssued = EScidocTools.getESciDocXpath("//publication:publication/dcterms:issued");
			XPath publishingInfoXPath = EScidocTools.getESciDocXpath("//publication:publication");
			@SuppressWarnings("unchecked")
			HashMap<String,Element> piContentHash = new HashMap<String, Element>();
			System.out.println(i);
			Element issued =(Element)publishingInfoContentXPathIssued.selectSingleNode(doc);
			if (issued==null){
			
			List<Element> piContents =publishingInfoContentXPath.selectNodes(doc);
			for (Element piContent : piContents) {
				
				String creationDate=piContent.getText();
				System.out.println("found  creation and no issue date:"+creationDate);	
				Element node = (Element)publishingInfoXPath.selectSingleNode(doc);
				
				//Element element = new Element("issued",EScidocTools.dcterms);
				//element.setText(creationDate);
				//node.addContent(element);
				piContent.setName("issued");
				String piContentName=piContent.getName();
				changed=true;
			}}
			
			if (changed){
				
				Boolean retVal = connector.updateItem(obj);
				System.out.println("Replaced:"+obj.getESciDocId());
				HttpResponse retValu = connector.submitAnObject(obj, "repairing publishing info (pulisher in bookitem)");
				
				System.out.println(EScidocBasicHandler.convertStreamToString(retValu.getEntity().getContent()));
				HttpResponse resObj = connector.eScidocGet(obj.getESciDocId());
				HttpEntity ent = resObj.getEntity();
				if (ent!=null){
				obj= new eSciDocXmlObject(ent.getContent());
				} else {
					System.out.println("Can not retrieve:" + obj.getESciDocId());
					continue;
				}
				
				HttpResponse reValue2 = connector.releaseAnObject(obj, "repairing publishing info (publisher in bookitem");
				System.out.println(EScidocBasicHandler.convertStreamToString(reValue2.getEntity().getContent()));

			}
		}

	}
}