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Created: Wed, Oct 8, 7:32 AM

user_groups_eh.php
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	<?php
	/**
	* @version $Id: user_groups_eh.php 16513 2017-01-20 14:10:53Z alex $
	* @package In-Portal
	* @copyright Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
	* @license GNU/GPL
	* In-Portal is Open Source software.
	* This means that this software may have been modified pursuant
	* the GNU General Public License, and as distributed it includes
	* or is derivative of works licensed under the GNU General Public License
	* or other free or open source software licenses.
	* See http://www.in-portal.org/license for copyright notices and details.
	*/

	defined('FULL_PATH') or die('restricted access!');

	class UserGroupsEventHandler extends kDBEventHandler {

	/**
	* Adds user as member for selected groups
	*
	* @param kEvent $event
	*/
	function OnProcessSelected($event)
	{
	if ($event->Prefix == 'u-ug') {
	$new_groups = $this->Application->GetVar('g');
	if (!$new_groups) {
	return ;
	}

	$new_groups = array_keys($new_groups);

	// don't insert duplicate group membership record
	$user_id = $this->Application->GetVar('u_id');
	$table_name = $this->Application->GetTempName(TABLE_PREFIX.'UserGroupRelations', 'prefix:u');

	$sql = 'SELECT GroupId
	FROM '.$table_name.'
	WHERE PortalUserId = '.(int)$user_id;
	$old_groups = $this->Conn->GetCol($sql);

	$new_groups = array_diff($new_groups, $old_groups);

	if ($new_groups) {
	foreach ($new_groups as $new_group) {
	$fields_hash = Array (
	'GroupId' => $new_group,
	'PortalUserId' => $user_id,
	);
	$this->Conn->doInsert($fields_hash, $table_name);
	}
	}
	}
	elseif ($event->Prefix == 'g-ug') {
	$new_users = $this->Application->GetVar('u');

	if (!$new_users) {
	return ;
	}

	$new_users = array_keys($new_users);

	// don't insert duplicate group membership record
	$group_id = $this->Application->GetVar('g_id');
	$table_name = $this->Application->GetTempName(TABLE_PREFIX.'UserGroupRelations', 'prefix:g');

	$sql = 'SELECT PortalUserId
	FROM ' . $table_name . '
	WHERE GroupId = ' . (int)$group_id;
	$old_users = $this->Conn->GetCol($sql);

	$new_users = array_diff($new_users, $old_users);

	if ($new_users) {
	foreach ($new_users as $new_user) {
	$fields_hash = Array (
	'GroupId' => $group_id,
	'PortalUserId' => $new_user,
	);
	$this->Conn->doInsert($fields_hash, $table_name);
	}
	}
	}

	$this->Application->StoreVar($this->Application->GetTopmostPrefix($event->Prefix).'_modified', '1', true); // true for optional
	$event->SetRedirectParam('opener', 'u');
	}

	/**
	* Sets primary group for user (in editing only)
	*
	* @param kEvent $event
	*/
	function OnSetPrimary($event)
	{
	$ids = $this->StoreSelectedIDs($event);

	if ($ids) {
	/** @var kDBItem $user */
	$user = $this->Application->recallObject('u');

	$user->SetDBField('PrimaryGroupId', array_shift($ids));
	$user->Update();
	}

	$this->clearSelectedIDs($event);
	}

	/**
	* Don't allow primary group record deleting
	*
	* @param kEvent $event
	* @param string $type
	* @return void
	* @access protected
	*/
	protected function customProcessing(kEvent $event, $type)
	{
	if ( $event->Name == 'OnMassDelete' && $type == 'before' ) {
	$ids = $event->getEventParam('ids');

	if ( $ids ) {
	$object = $event->getObject(Array ('skip_autoload' => true));

	if ( $event->Prefix == 'u-ug' ) {
	// allow deleting non-primary group of current user ($ids - groups)
	$sql = 'SELECT PrimaryGroupId
	FROM ' . $this->Application->GetTempName(TABLE_PREFIX . 'Users', 'prefix:u') . '
	WHERE PortalUserId = ' . (int)$this->Application->GetVar('u_id');
	$primary_group_id = (int)$this->Conn->GetOne($sql);

	$index = array_search($primary_group_id, $ids);

	if ( $index !== false ) {
	unset($ids[$index]);
	$event->setEventParam('ids', $ids);
	}
	}
	elseif ( $event->Prefix == 'g-ug' ) {
	// allow deleting users from group record, then it's not their primary group ($ids - users)
	$group_id = (int)$this->Application->GetVar('g_id');

	$sql = 'SELECT PortalUserId
	FROM ' . TABLE_PREFIX . 'Users
	WHERE PortalUserId IN (' . implode(',', $ids) . ') AND PrimaryGroupId = ' . $group_id;
	$exclude_users = $this->Conn->GetCol($sql);

	$event->setEventParam('ids', array_diff($ids, $exclude_users));
	}
	}
	}
	}
	}

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