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package ee.tlu.htk.dippler.utils;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

/**
 *
 * @author raido
 */
public class XMLHandler {
    
    private Document doc = null;
    
    public XMLHandler(String data) {
        if ( !data.isEmpty() ) {
            try {
                InputStream is = new ByteArrayInputStream(data.getBytes("UTF-8"));
                DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
                doc = builder.parse(is);
            } catch (SAXException ex) {
                Logger.getLogger(XMLHandler.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IOException ex) {
                Logger.getLogger(XMLHandler.class.getName()).log(Level.SEVERE, null, ex);
            } catch(ParserConfigurationException e) {
                
            }
        } 
    }
    
    public boolean parseSuccess() {
        return ( this.doc == null ? false : true );
    }
    
    public String getNodeValue(String node) {
        String nodeValue = null;
        if ( doc != null ) {
            nodeValue = doc.getElementsByTagName(node).item(0).getTextContent();
        }
        return nodeValue;
    }
    
    public Long getNodeValueLong(String node) {
        String nodeValue = null;
        if ( doc != null ) {
            nodeValue = doc.getElementsByTagName(node).item(0).getTextContent();
            if ( nodeValue != null ) {
                return Long.parseLong( nodeValue );
            }
        }
        return 0L;
    }
}