package org.medias.eccad.helpers;

import java.io.InputStream;
import java.io.StringReader;
import java.util.Date;
import java.util.Iterator;
import java.util.Set;


import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.SAXReader;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;

public class XmlHelper {
	
	public static String createNode(String tag, String valeur) {
		String noeud = new String();
		if (valeur == null)
			return "";
		
		valeur = valeur.trim();
		
		if ( valeur.equals("") || valeur.equals("NULL") || valeur.equals("xx")) {
			return "";
		}
		
		noeud = "<" + tag + ">" + valeur + "</" + tag + ">" + "\n";
		
		return noeud;
	}
	
	public static String createNode(String tag, Date valeur) {
		if (valeur != null) {
			return createNode(tag, valeur.toString());
		}
		return "";
	}
	
	public static String createNode(String tag, int valeur) {
		return createNode(tag, Integer.toString(valeur));
	}
	
	public static String createNode(String tag, long valeur) {
		return createNode(tag, Long.toString(valeur));
	}
	
	public static String createNode(String tag, Long valeur) {
		if (valeur != null) {
			return createNode(tag, valeur.toString());
		}
		return "";
	}
	
	public static String objectToString(Object objet) {
		String retour = new String();
		
		if (objet != null)
			retour = objet.toString();
		
		return retour;
	}
	
	public static String listToString(String nom, Set<?> liste) {
		String retour = new String();
		
		if (liste.size()==0)
			return "";
		
		retour += "<" + nom + ">\n";
		
		for (Object object : liste) {
			retour += object.toString();
		}
		
		retour += "</" + nom + ">\n";
		
		return retour;
	}
	
	/**
	 * fonction pour récupérer juste 1 élement...
	 * @param nom
	 * @param liste
	 * @param index
	 * @return
	 */
	public static String listToString(String nom, Set<?> liste, int index) {
		String retour = new String();
		
		if (liste.size()==0)
			return "";
		
		Iterator<?> ite = liste.iterator();
		retour += ite.next().toString();
		

		return retour;
	}
	
public static Document getXMLtoDocument(InputStream is_xml, String identifiant) {

//	LoggerPerso.log(XmlHelper.class, LoggerPerso.WARN, "LECTURE XML");
		Document dom = null;
		InputSource is = null;
		SAXReader reader = new SAXReader();
		
		class NoDTDEntityResolver implements EntityResolver
		
		  {
		     public InputSource resolveEntity(String publicID, String systemID)	
		     {
		    	 return new InputSource(new StringReader(""));
		     }
		
		  }
		
		
		try {
		is = new InputSource(is_xml);
		is.setEncoding("ISO-8859-1"); }
		catch (Exception e) {
			LoggerPerso.log(XmlHelper.class, LoggerPerso.WARN, "Erreur de lecture du xml", e);
			return null;
		}
		
		
		try {

			//Using factory get an instance of document builder
			reader.setEntityResolver(new NoDTDEntityResolver());
			//parse using builder to get DOM representation of the XML file
			 dom = reader.read(is);
		}
		catch(DocumentException etout) {
			LoggerPerso.log(XmlHelper.class, LoggerPerso.WARN, "Document Exception " + identifiant);
			LoggerPerso.log(XmlHelper.class, LoggerPerso.WARN, etout);
			//etout.printStackTrace();
			return null;
		}
		return dom;
	}
}