package eu.dnetlib;

import java.io.StringWriter;

import org.junit.Test;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import eu.dnetlib.miscutils.functional.xml.ApplyXslt;

/**
 * Unit test for simple App.
 */
public class AppTest {

	@Test
	public void testXslt() {
		String res = (new ApplyXslt(getXslt())).evaluate(getXml());
		System.out.println("******************");
		System.out.println(res);
		System.out.println("******************");
	}

	
	public static String javaMethod(NodeList list) {
		System.out.println("******************");
		System.out.println("TYPE   : " + list.toString());
		System.out.println("LENGTH : " + list.getLength());
		for (int i = 0; i<list.getLength(); i++) {
			Node node = list.item(i);
			
			System.out.println("ELEM " + i + ": " + node.getLocalName());
		}
		
		System.out.println("******************");
		return "SUCA";
	}
	

	private String getXml() {
		final StringWriter sw = new StringWriter();
		sw.append("<?xml version='1.0' encoding='UTF-8'?>\n");
		sw.append("<record>\n");
		sw.append("<metadata>\n");
		sw.append("<a>A text value</a>\n");
		sw.append("<b attr='attribute value'/>\n");
		sw.append("</metadata>\n");
		sw.append("</record>\n");

		return sw.toString();
	}

	private String getXslt() {
		final StringWriter sw = new StringWriter();

		sw.append("<?xml version='1.0' encoding='UTF-8'?>\n");
		sw.append("<xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform' xmlns:dnet='eu.dnetlib.AppTest' exclude-result-prefixes='xsl dnet'>\n");
		sw.append("<xsl:output omit-xml-declaration='yes' indent='yes'/>\n");
		sw.append("<xsl:template match='/*'>\n");
		sw.append("<xsl:variable name='metadata' select=\"//*[local-name()='metadata']/*\" />\n");
		sw.append("<ROWS>\n");
		sw.append("<xsl:value-of select='dnet:javaMethod($metadata)'/>\n");
		sw.append("</ROWS>\n");
		sw.append("</xsl:template>\n");
		sw.append("</xsl:stylesheet>\n");
		return sw.toString();
	}
}