<?php // -*- mode:php; tab-width:4; indent-tabs-mode:t; c-basic-offset:4; -*-
#CMS - CMS Made Simple
#(c)2004-2008 by Ted Kulp (ted@cmsmadesimple.org)
#This project's homepage is: http://cmsmadesimple.org
#
#This program is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#BUT withOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#$Id$
 
/**
 * Represents a user group in the database.
 *
 * @author Ted Kulp
 * @since 2.0
 * @version $Revision$
 * @modifiedby $LastChangedBy$
 * @lastmodified $Date$
 * @license GPL
 **/
class CmsGroup extends CmsObjectRelationalMapping
{
  var $params = array('id' => -1, 'name' => '', 'active' => true);
  var $field_maps = array('group_name' => 'name');
  var $table = 'groups';
  
  public function __construct()
  {
    parent::__construct();
  }
  
  public function setup()
  {
    $this->create_has_and_belongs_to_many_association('users', 'user', 'user_groups', 'user_id', 'group_id');
  }
  
  public function validate()
  {
    $this->validate_not_blank('name', lang('nofieldgiven',array(lang('username'))));
    
    // Username validation
    if ($this->name != '')
    {
      // Make sure the name is unique
      $result = $this->find_by_name($this->name);
      if ($result)
      {
        if ($result->id != $this->id)
        {
          $this->add_validation_error(lang('The group name is already in use'));
        }
      }
      
      // Make sure the name has no illegal characters
      if ( !preg_match("/^[a-zA-Z0-9\.]+$/", $this->name) ) 
      {
        $this->add_validation_error(lang('illegalcharacters', array(lang('groupname'))));
      }
    }
  }
 
  public function add_user($user)
  {
    if ($this->id > -1)
    {
      $date = cms_db()->DBTimeStamp(time());
      return cms_db()->Execute('INSERT INTO ' . cms_db_prefix() . "user_groups (user_id, group_id, create_date, modified_date) VALUES (?,?,{$date},{$date})", array($user->id, $this->id));
    }
    
    return false;
  }
 
  public function remove_user($user)
  {
    if ($this->id > -1)
    {
      return cms_db()->Execute('DELETE FROM '.cms_db_prefix().'user_groups WHERE user_id = ? AND group_id = ?', array($user->id, $this->id));
    }
 
    return false;
  }
  
  //Callback handlers
  public function before_save()
  {
    CmsEvents::send_event( 'Core', ($this->id == -1 ? 'AddGroupPre' : 'EditGroupPre'), array('group' => &$this));
  }
  
  public function after_save()
  {
    //Add the group to the aro table so we can do acls on it
    //Only happens on a new insert
    if ($this->create_date == $this->modified_date)
    {
      //CmsAcl::add_aro($this->id, 'Group');
    }
    CmsEvents::send_event( 'Core', ($this->create_date == $this->modified_date ? 'AddGroupPost' : 'EditGroupPost'), array('group' => &$this));
  }
  
  public function before_delete()
  {
    cms_db()->Execute('DELETE FROM '.cms_db_prefix().'user_groups WHERE group_id = ?',
              array($this->id));
    CmsEvents::send_event('Core', 'DeleteGroupPre', array('group' => &$this));
  }
  
  public function after_delete()
  {
    //CmsAcl::delete_aro($this->id, 'Group');
    CmsEvents::send_event('Core', 'DeleteGroupPost', array('group' => &$this));
  }
  
  public static function get_groups_for_dropdowm($add_everyone = false)
  {
    $result = array();
    
    if ($add_everyone)
    {
      $result[-1] = lang('Everyone');
    }
    
 
    $groups = cmsms()->group->find_all(array('order' => 'name ASC'));
    foreach ($groups as $group)
    {
      $result[$group->id] = $group->name;
    }
    
    return $result;
  }
}
 
# vim:ts=4 sw=4 noet
?>