/*
 * Copyright (C) 2005-2012 BetaCONCEPT Limited
 *
 * This file is part of Astroboa.
 *
 * Astroboa is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Astroboa is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Astroboa.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.betaconceptframework.astroboa.test.util;

import java.io.StringReader;
import java.io.StringWriter;
import java.util.UUID;

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Gregory Chomatas (gchomatas@betaconcept.com)
 * @author Savvas Triantafyllou (striantafyllou@betaconcept.com)
 * 
 */
public class TestUtils {
	
	private static Logger logger = LoggerFactory.getLogger(TestUtils.class);

	public static String generateRandomUUID(){
        return UUID.randomUUID().toString();
	}
	
	public static String createValidSystemName(String systemName){
		if (systemName == null){
			return "";
		}
		
		return systemName;
	}
	
	public static String prettyPrintXml(String input) {
		
		if (input == null){
			return "";
		}
		
		int indent = 2;
		
	    try {
	        Source xmlInput = new StreamSource(new StringReader(input));
	        StringWriter stringWriter = new StringWriter();
	        StreamResult xmlOutput = new StreamResult(stringWriter);
	        Transformer transformer = TransformerFactory.newInstance().newTransformer(); 
	        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
	        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", String.valueOf(indent));
	        transformer.transform(xmlInput, xmlOutput);
	        return xmlOutput.getWriter().toString();
	    } catch (Exception e) {
	    	return input;
	    }
	}

}