/**
* Copyright (c) 2009 - 2012 Red Hat, Inc.
*
* This software is licensed to you under the GNU General Public License,
* version 2 (GPLv2). There is NO WARRANTY for this software, express or
* implied, including the implied warranties of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
* along with this software; if not, see
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* Red Hat trademarks are not licensed under GPLv2. No permission is
* granted to use or replicate Red Hat trademarks that are incorporated
* in this software or its documentation.
*/
package org.candlepin.resource.util;
import org.candlepin.common.exceptions.BadRequestException;
import org.apache.commons.lang.StringUtils;
import java.util.Date;
import javax.xml.bind.DatatypeConverter;
/**
* ResourceDate
*/
public class ResourceDateParser {
private ResourceDateParser() {
}
public static Date getFromDate(String from, String to, String days) {
if (days != null && !days.trim().equals("") &&
(to != null && !to.trim().equals("") ||
from != null && !from.trim().equals(""))) {
throw new BadRequestException("You can use either the to/from " +
"date parameters or the number of " +
"days parameter, but not both");
}
Date daysDate = null;
if (days != null && !days.trim().equals("")) {
long mills = 1000 * 60 * 60 * 24;
int number = Integer.parseInt(days);
daysDate = new Date(new Date().getTime() - (number * mills));
}
Date fromDate = null;
if (daysDate != null) {
fromDate = daysDate;
}
else {
fromDate = parseDateString(from);
}
return fromDate;
}
public static Date parseDateString(String activeOn) {
Date d;
if (StringUtils.isBlank(activeOn)) {
return null;
}
try {
d = DatatypeConverter.parseDateTime(activeOn).getTime();
}
catch (IllegalArgumentException e) {
throw new BadRequestException(
"Invalid date, must use ISO 8601 format");
}
return d;
}
}