/**
 * Copyright (c) Istituto Nazionale di Fisica Nucleare (INFN). 2006-2016
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.glite.security.voms.admin.view.util;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;

import org.apache.struts2.util.StrutsTypeConverter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.opensymphony.xwork2.conversion.TypeConversionException;

public class FixedLocaleDateTypeConverter extends StrutsTypeConverter {

  public static final Logger log = LoggerFactory
    .getLogger(FixedLocaleDateTypeConverter.class);

  @Override
  public Object convertFromString(Map context, String[] values, Class toClass) {

    String dateString = values[0];
    log.debug("Converting from String {} to date.", dateString);
    Date date = parseDate(dateString);
    return date;
  }

  @Override
  public String convertToString(Map context, Object o) {

    // FIXME: should parse BaseAction.properties for this!
    DateFormat formatter = new SimpleDateFormat("MM/dd/yy");
    Date d = (Date) o;

    log.debug("Converting from Date {} to string.", d.toString());

    return formatter.format(d);
  }

  Date parseDate(String dateString) {

    // FIXME: should parse BaseAction.properties for this!
    DateFormat formatter = new SimpleDateFormat("MM/dd/yy");
    try {
      Date date = formatter.parse(dateString);
      return date;
    } catch (ParseException e) {
      log.warn("Error parsing date: {}", dateString);
      log.debug(e.getMessage(), e);
      throw new TypeConversionException("Error parsing date: " + dateString, e);
    }

  }

}