package net.ihe.xcpd.init.tools;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;

import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;

import net.ihe.gazelle.simulator.common.model.ApplicationConfiguration;

/**
 * @author abderrazek boufahja
 */
public class XSLTransformer {
    
    public static String resultTransformation(String inDetailedResult, String inXslPath)
    {
        if (inDetailedResult == null ||inDetailedResult.length() == 0)
            return null;
        
        if (inXslPath == null || inXslPath.length() == 0)
            return null;
        
        try {
            TransformerFactory tFactory = TransformerFactory.newInstance();

            Transformer transformer = tFactory.newTransformer(
                    new javax.xml.transform.stream.StreamSource(ApplicationConfiguration.getValueOfVariable("gazelle_bin")+ 
                    File.separatorChar + "xsl" +  File.separatorChar + inXslPath));
            transformer.setOutputProperty(OutputKeys.INDENT, "yes");

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            StreamResult out = new StreamResult(baos);
            ByteArrayInputStream bais = new ByteArrayInputStream(inDetailedResult.getBytes("UTF8"));
            transformer.transform(new javax.xml.transform.stream.StreamSource(bais), out);
            String tmp = new String (baos.toByteArray()) ;
            return tmp;
        } catch (Exception e) {
            e.printStackTrace( );
            return "The document cannot be displayed using this stylesheet";
        }
    }

}