package test.testLoadProfile;

import java.io.File;
import java.io.IOException;

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;


public class LoadCalendarUpdater {
	
	private static Log logger = LogFactory.getLog(LoadCalendarUpdater.class);

	private static final String DEFAULT_UPDATE_TRANSFORMATION_FILE_NAME = "simulator/xslt/debb/LoadCalendarUpdater.xsl";
	private static final String DEFAULT_SCHEDULERS_AND_ESTIMATORS_FILE_NAME = "coolemallPlugins.xml";
	
	private static String resourceFileName;
	private static String loadCalendarFileName ;

	public LoadCalendarUpdater() {
		// TODO Auto-generated constructor stub
	}


	public static void main(String[] args) throws Exception {
		LoadCalendarUpdater loadCalendarUpdater = new LoadCalendarUpdater() ;
		loadCalendarUpdater.update(args);
	}
	
	public String update (String[] args) throws Exception {
		
		String inputFileName = null;
		String estimatorsFileName = DEFAULT_SCHEDULERS_AND_ESTIMATORS_FILE_NAME;
		
		if (args == null || args.length < 2) {
			String errorMessage = "No arguments specified. Please specify at least input files paths.";
			logger.error(errorMessage);
			throw new IOException(errorMessage);
		}

		inputFileName = args[0];
		if (inputFileName == null
				|| (inputFileName != null && inputFileName.isEmpty() == true)) {

			String errorMessage = "Input file not specified!";
			logger.error(errorMessage);
			
			throw new IOException(errorMessage);
		}
		File inputFile = new File(inputFileName);
		resourceFileName = inputFile.getAbsolutePath();

		if (args.length > 1) {
			loadCalendarFileName = args[1];
			if (loadCalendarFileName == null
					|| (loadCalendarFileName != null && loadCalendarFileName.isEmpty() == true)) {
				String errorMessage = "Input file not specified!";
				logger.error(errorMessage);
				
				throw new IOException(errorMessage);
			}
		}
		inputFileName = args[1];
		File inputFile2 = new File(inputFileName);
		loadCalendarFileName = inputFile2.getAbsolutePath();

		try {
			TransformerFactory tFactory = TransformerFactory.newInstance();
			
			String debbUpdateTransformationFileName = DEFAULT_UPDATE_TRANSFORMATION_FILE_NAME;
			
			Transformer updateTransformer = tFactory.newTransformer(new javax.xml.transform.stream.StreamSource(
							debbUpdateTransformationFileName ));
			updateTransformer.setParameter("additionalInformationFileName", loadCalendarFileName);
			updateTransformer.setParameter("estimatorsInformationFileName", estimatorsFileName);
			updateTransformer.transform(new javax.xml.transform.stream.StreamSource(resourceFileName), 
					new javax.xml.transform.stream.StreamResult(resourceFileName));
			logger.debug("File " + resourceFileName + " has been updated");
		} catch (Exception e) {
			e.printStackTrace();
		}
		return resourceFileName;
	}
}