<?php
/**
 * Copyright 2002-2017 Horde LLC (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (GPL). If you
 * did not receive this file, see http://www.horde.org/licenses/gpl.
 *
 * @category  Horde
 * @copyright 2002-2017 Horde LLC
 * @license   http://www.horde.org/licenses/gpl GPL
 * @package   IMP
 */

/**
 * Implementation of IMP_Quota API for a generic hook function.  This
 * requires the quota hook to be set in config/hooks.php.
 *
 * You must configure this driver in imp/config/backends.php.  The driver
 * supports the following parameters:
 *   - params: (array) Parameters to pass to the quota function.
 *
 * @author    Michael Redinger <Michael.Redinger@uibk.ac.at>
 * @category  Horde
 * @copyright 2002-2017 Horde LLC
 * @license   http://www.horde.org/licenses/gpl GPL
 * @package   IMP
 */
class IMP_Quota_Hook extends IMP_Quota
{
    /**
     */
    public function getQuota($mailbox = null)
    {
        try {
            $quota = $GLOBALS['injector']->getInstance('Horde_Core_Hooks')->callHook(
                'quota',
                'imp',
                array($this->_params)
            );
        } catch (Horde_Exception_HookNotSet $e) {
            throw new IMP_Exception($e->getMessage());
        }

        if (count($quota) != 2) {
            Horde::log('Incorrect number of return values from quota hook.', 'ERR');
            throw new IMP_Exception(_("Unable to retrieve quota"));
        }

        return array(
            'limit' => $quota[1],
            'usage' => $quota[0]
        );
    }

}