<?php
/**
 * Event_Handler_User_Add2Group
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

WBClass::load('WBEvent_Handler'
    , 'WBEvent_Handler_User'
    );

/**
 * Event_Handler_User_Add2Group
 *
 * Add user to group
 *
 * @version 0.1.0
 * @package WB
 * @subpackage base
 */
class WBEvent_Handler_User_Add2Group extends WBEvent_Handler_User
{
    /**
     * Handler config
     *
     * Parameters:
     * - group list of group ids to add
     *
     * @var array
     */
    protected $config   =   array(
                                'group'         =>  array(),
                                );

    /**
     * Conditional Stop Event Processing
     *
     * Stop processing according to values. By default - if there is no "key", event will be stopped.
     * If there is a key, it will check event data values against configured values and stop
     * on match.
     *
     * @see isRecoverable()
     * @param WBEvent $e
     * @return bool true to continue, false to stop processing
     * @throws Exception in case of error
     */
    public function process(WBEvent $e)
    {
        // no group just go on
        if (empty($this->config['group'])) {
            $this->debugPrint('Nothing to do, grouplist ist empty');
            return true;
        }
        if (!is_array($this->config['group'])) {
            $this->config['group']  =   array($this->config['group']);
        }

        // there is no user
        if (!$this->loadUser($e)) {
            $this->debugPrint('Nothing to do, could not load user');
            return true;
        }
        $group  =   $this->user->getGroups();
        if (!empty($group)) {
            $group  =   array_keys($group);
        }

        $save   =   false;
        foreach ($this->config['group'] as $g) {
            if (!in_array($g, $group)) {
                $group[]    =   $g;
                $save       =   true;
            }
        }

        if ($save) {
            $this->user->setGroups($group);
            return true;
        }
        $this->debugPrint('Nothing to do, user is already in groups');
        return true;
    }
}