<?php
/**
 * Piwik - free/libre analytics platform
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 */

namespace Piwik\Plugins\Marketplace\Input;
use Piwik\Common;

/**
 */
class Sort
{
    const METHOD_POPULAR = 'popular';
    const METHOD_ALPHA = 'alpha';
    const METHOD_LAST_UPDATED = 'lastupdated';
    const METHOD_NEWEST = 'newest';
    const DEFAULT_SORT = self::METHOD_LAST_UPDATED;

    public function getSort()
    {
        $sort = Common::getRequestVar('sort', self::DEFAULT_SORT, 'string');

        if (!$this->isValidSortMethod($sort)) {
            $sort = self::DEFAULT_SORT;
        }

        return $sort;
    }

    private function isValidSortMethod($sortMethod)
    {
        $valid = array(self::METHOD_POPULAR, self::METHOD_NEWEST, self::METHOD_ALPHA);

        return in_array($sortMethod, $valid, $strict = true);
    }

}
