package com.tarisan.chipcard.tpvvs.webservicetrayicon.messages;

/**
 * @author jjrider
 */
import es.chipcard.util.*;
import org.w3c.dom.*;
import java.io.*;

public abstract class Msg {
	public static int TYPE_OF_MESSAGE_ERROR=-1;
	public static int TYPE_OF_MESSAGE_CCREQ=1;
	public static int TYPE_OF_MESSAGE_CCRES=2;
	public static String DEFAULT_XML_DECLARATION="<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>";
	
	private Document xmlDoc=null;
	
	
	public Msg(String sMessage) throws Exception{
		xmlDoc=SerClsXMLUtils.parsearDocumento(new StringReader(DEFAULT_XML_DECLARATION+"<Msg version=\"1.0\">"+sMessage+"</Msg>"));
	}
	
	public Msg(Document doc) throws Exception{
		if(doc==null)
			throw new Exception("El XML dado como argumento no puede ser NULL");
		if(!doc.getDocumentElement().getNodeName().equals("Msg")){
			throw new Exception("El XML dado como argumento no es un Msg");
		}
		xmlDoc=doc;
	}

	public abstract int getTypeOfMessage();
	
	protected Document getDocument(){
		return xmlDoc;
	}
	
	public void setRepeticion(boolean blnValue){
		xmlDoc.getDocumentElement().setAttribute("repeticion",((blnValue)?"true":"false"));
	}
	
	public String toString(){
		return SerClsXMLUtils.dameTextoXml(xmlDoc);
	}
	
	public void saveToOutputStream(OutputStream out) throws Exception{
		SerClsXMLUtils.toOutputStream(getDocument(),out);
	}
	
	/******
	 * Crea un objeto Msg a partir de una cadena
	 * @param sResponse
	 * @return
	 * @throws Exception
	 */
	public static Msg createMsgFromString(String sResponse) throws Exception{
		/**if(sResponse!=null){
			if(!sResponse.trim().startsWith("<?xml")){
				
			}
		}**/
		sResponse=DEFAULT_XML_DECLARATION+sResponse;
		//System.err.println("XML Respuesta:"+sResponse);
		Document xmlResponse=SerClsXMLUtils.parsearDocumentoFromString(sResponse);
		if(SerClsXMLUtils.existeElemento(xmlResponse.getDocumentElement(),"Error")){
			return new Error(xmlResponse); 
		}else if(SerClsXMLUtils.existeElemento(xmlResponse.getDocumentElement(),"CCRes")){
			return new AutRes(xmlResponse); 
		}else{
			return null; 
		}
	}
}