package org.restafarian.core.utils;

 import java.sql.Timestamp;

 import java.text.DateFormat;

 import java.text.ParseException;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 import org.apache.commons.beanutils.ConversionException;

 import org.apache.commons.beanutils.Converter;

 /**

  * <p>Converts java Date objects to ISO8601-compliant String values and back.</p>

  */

 public class ISO8601DateConverter implements Converter {

         private static final DateFormat FORMAT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");

         public Object convert(Class clazz, Object object) throws ConversionException {

                 Object returnValue = null;

                 if (object != null) {

                         if (clazz == null) {

                                 throw new ConversionException("Class parameter cannot be null.");

                         } else {

                                 if (clazz.equals(Date.class) && object.getClass().equals(String.class)) {

                                         returnValue = convertStringToDate((String) object);

                                 } else if (clazz.equals(String.class)) {

                                         if (object.getClass().equals(Date.class) || object.getClass().equals(Timestamp.class)) {

                                                 returnValue = convertDateToString((Date) object);

                                         } else {

                                                 returnValue = object.toString();

                                         }

                                 } else {

                                         returnValue = object;

                                 }

                         }

                 }

                 return returnValue;

         }

         public Date convertStringToDate(String string) throws ConversionException {

                 try {

                         return FORMAT.parse(string);

                 } catch (ParseException e) {

                         throw new ConversionException(e);

                 }

         }

         public String convertDateToString(Date date) throws ConversionException {

                 String string = FORMAT.format(date);

                 return string.substring(0, string.length() - 2) + ":" + string.substring(string.length() - 2);

         }

 }