/***
 * Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
 * All rights reserved.
 *
 * 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 br.com.caelum.vraptor.converter.jodatime;

import static org.joda.time.format.DateTimeFormat.shortDateTime;

import java.text.MessageFormat;
import java.util.ResourceBundle;

import org.joda.time.DateTime;

import br.com.caelum.vraptor.Convert;
import br.com.caelum.vraptor.Converter;
import br.com.caelum.vraptor.converter.ConversionError;
import br.com.caelum.vraptor.core.Localization;

/**
 * VRaptor converter for {@link DateTime}. {@link DateTime} is part of Joda Time library.
 * 
 * @author Lucas Cavalcanti
 * @author Otávio Scherer Garcia
 */
@Convert(DateTime.class)
public class DateTimeConverter implements Converter<DateTime> {

	private final Localization localization;
	
	public DateTimeConverter(Localization localization) {
	this.localization = localization;
	}

	public DateTime convert(String value, Class<? extends DateTime> type, ResourceBundle bundle) {
		try {
			DateTime out = new LocaleBasedJodaTimeConverter(localization).convert(value, shortDateTime());
			if (out == null) {
				return null;
			}
			
			return out.toDateTime();
		} catch (Exception e) {
			throw new ConversionError(MessageFormat.format(bundle.getString("is_not_a_valid_datetime"), value));
		}
	}
}