<?php
/**
 *
 * @category        framework
 * @package         frontend.functions
 * @author          WebsiteBaker Project
 * @copyright       Ryan Djurovich
 * @copyright       WebsiteBaker Org. e.V.
 * @link            http://websitebaker.org/
 * @license         http://www.gnu.org/licenses/gpl.html
 * @platform        WebsiteBaker 2.8.3
 * @requirements    PHP 5.3.6 and higher
 * @version         $Id: frontend.functions.php 2 2017-07-02 15:14:29Z Manuela $
 * @filesource      $HeadURL: svn://isteam.dynxs.de/wb/2.10.x/trunk/framework/frontend.functions.php $
 * @lastmodified    $Date: 2017-07-02 17:14:29 +0200 (Sun, 02 Jul 2017) $
 *
 */
/* -------------------------------------------------------- */
// Must include code to stop this file being accessed directly
if(!defined('WB_PATH')) {
    require_once(dirname(__FILE__).'/globalExceptionHandler.php');
    throw new IllegalFileException();
}
/* -------------------------------------------------------- */

    $include_head_link_css = '';
    $include_head_links    = '';
    $include_body_links    = '';

    $aAlllowedModules = array();
    $aModules = glob (WB_PATH.'/modules/*', GLOB_ONLYDIR|GLOB_NOSORT);
    foreach ($aModules as $sPath){
        if (is_readable($sPath.'/include.php')){$aAlllowedModules[] = basename($sPath);}
    }
    $sAllowedModules   = implode(', ',
                         array_map(function(&$item) use ($database){
                                       return '\''.$database->escapeString($item) .'\'';
                                   },$aAlllowedModules));

// workout to included frontend.css, fronten.js and frontend_body.js in snippets and tools
    $sql  = 'SELECT `directory`,`function` FROM `'.TABLE_PREFIX.'addons` '
          . 'WHERE `type`=\'module\' '
          .   'AND `function` IN (\'snippet\', \'tool\') '
          .   'AND `directory` IN('.$sAllowedModules.')'
          . '';
    if(($oSnippets = $database->query($sql)))
    {
        while($aSnippet = $oSnippets->fetchRow( MYSQLI_ASSOC))
        {
            $module_dir = $aSnippet['directory'];
            if (is_readable(WB_PATH.'/modules/'.$module_dir.'/include.php'))
            {
                include(WB_PATH.'/modules/'.$module_dir.'/include.php');
            // check if frontend.css file needs to be included into the <head></head> of index.php
                if( is_readable(WB_PATH .'/modules/'.$module_dir.'/frontend.css')) {
                    $include_head_link_css .= "\t".'<link rel="stylesheet" type="text/css" href="'.WB_URL.'/modules/'.$module_dir.'/frontend.css" media="screen" />'."\n";
                    $include_head_file = 'frontend.css';
                }
            // check if frontend.js file needs to be included into the <body></body> of index.php
                if(is_readable(WB_PATH .'/modules/'.$module_dir.'/frontend.js')) {
                    $include_head_links .= "\t".'<script src="'.WB_URL.'/modules/'.$module_dir.'/frontend.js" type="text/javascript" ></script>';
                    $include_head_file = 'frontend.js';
                }
            // check if frontend_body.js file needs to be included into the <body></body> of index.php
                if(is_readable(WB_PATH .'/modules/'.$module_dir.'/frontend_body.js')) {
                    $include_body_links .= "\t".'<script src="'.WB_URL.'/modules/'.$module_dir.'/frontend_body.js" type="text/javascript" ></script>'."\n";
                    $include_body_file   = 'frontend_body.js';
                }
            }
        }
    }
/* ------------------------------------------------------------------------------------------------ */

// Frontend functions
if(!function_exists('page_link')) {
    /**
     * generate full qualified URL from relative link based on pages_dir
     * @param string $link
     * @return string
     */
    function page_link($link) {
        return $GLOBALS['wb']->page_link($link);
    }
}

if (!function_exists('get_page_link')) {
    /**
     * get relative link from database based on pages_dir
     * @global <type> $database
     * @param <type> $id
     * @return <type>
     */
    function get_page_link( $id )
    {
        global $database;
        $sql = 'SELECT `link` FROM `'.TABLE_PREFIX.'pages` WHERE `page_id` = '.intval($id);
        $link = $database->get_one( $sql );
        return $link;
    }
}

//function to highlight search results
if(!function_exists('search_highlight')) {
    /**
     *
     * @staticvar boolean $string_ul_umlaut
     * @staticvar boolean $string_ul_regex
     * @param string $foo
     * @param array $arr_string
     * @return string
     */
    function search_highlight($foo='', $arr_string=array()) {
        require_once(WB_PATH.'/framework/functions.php');
        static $string_ul_umlaut = FALSE;
        static $string_ul_regex = FALSE;
        if($string_ul_umlaut === FALSE || $string_ul_regex === FALSE) {
            require(WB_PATH.'/search/search_convert.php');
        }
        $foo = entities_to_umlauts($foo, 'UTF-8');
        array_walk($arr_string, create_function('&$v,$k','$v = preg_quote($v, \'~\');'));
        $search_string = implode("|", $arr_string);
        $string = str_replace($string_ul_umlaut, $string_ul_regex, $search_string);
        // the highlighting
        // match $string, but not inside <style>...</style>, <script>...</script>, <!--...--> or HTML-Tags
        // Also droplet tags are now excluded from highlighting.
        // split $string into pieces - "cut away" styles, scripts, comments, HTML-tags and eMail-addresses
        // we have to cut <pre> and <code> as well.
        // for HTML-Tags use <(?:[^<]|<.*>)*> which will match strings like <input ... value="<b>value</b>" >
        $matches = preg_split("~(\[\[.*\]\]|<style.*</style>|<script.*</script>|<pre.*</pre>|<code.*</code>|<!--.*-->|<(?:[^<]|<.*>)*>|\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,8}\b)~iUs",$foo,-1,(PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY));
        if(is_array($matches) && $matches != array()) {
            $foo = "";
            foreach($matches as $match) {
                if($match{0}!="<" && !preg_match('/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,8}$/i', $match) && !preg_match('~\[\[.*\]\]~', $match)) {
                    $match = str_replace(array('&lt;', '&gt;', '&amp;', '&quot;', '&#039;', '&nbsp;'), array('<', '>', '&', '"', '\'', "\xC2\xA0"), $match);
                    $match = preg_replace('~('.$string.')~ui', '_span class=_highlight__$1_/span_',$match);
                    $match = str_replace(array('&', '<', '>', '"', '\'', "\xC2\xA0"), array('&amp;', '&lt;', '&gt;', '&quot;', '&#039;', '&nbsp;'), $match);
                    $match = str_replace(array('_span class=_highlight__', '_/span_'), array('<span class="highlight">', '</span>'), $match);
                }
                $foo .= $match;
            }
        }

        if(DEFAULT_CHARSET != 'utf-8') {
            $foo = umlauts_to_entities($foo, 'UTF-8');
        }
        return $foo;
    }
}

if (!function_exists('page_menu')) {
    /**
     * Old menu generator
     * @deprecated from WB 2.8.x and up
     * @global <type> $wb
     * @param <type> $parent
     * @param <type> $menu_number
     * @param <type> $item_template
     * @param <type> $menu_header
     * @param <type> $menu_footer
     * @param <type> $default_class
     * @param <type> $current_class
     * @param <type> $recurse
     */
    function page_menu($parent = 0, $menu_number = 1, $item_template = '<li[class]>[a] [menu_title] [/a]</li>', $menu_header = '<ul>', $menu_footer = '</ul>', $default_class = ' class="menu_default"', $current_class = ' class="menu_current"', $recurse = LEVEL) {
        global $wb;
        $wb->menu_number=$menu_number;
        $wb->menu_item_template=$item_template;
        $wb->menu_item_footer='';
        $wb->menu_parent = $parent;
        $wb->menu_header = $menu_header;
        $wb->menu_footer = $menu_footer;
        $wb->menu_default_class = $default_class;
        $wb->menu_current_class = $current_class;
        $wb->menu_recurse = $recurse+2;
        $wb->menu();
        unset($wb->menu_parent);
        unset($wb->menu_number);
        unset($wb->menu_item_template);
        unset($wb->menu_item_footer);
        unset($wb->menu_header);
        unset($wb->menu_footer);
        unset($wb->menu_default_class);
        unset($wb->menu_current_class);
        unset($wb->menu_start_level);
        unset($wb->menu_collapse);
        unset($wb->menu_recurse);
    }
}

if (!function_exists('show_menu')) {
    /**
     * Old menu generator
     * @deprecated from WB 2.8.x and up
     * @global  $wb
     * @param <type> $menu_number
     * @param <type> $start_level
     * @param <type> $recurse
     * @param <type> $collapse
     * @param <type> $item_template
     * @param <type> $item_footer
     * @param <type> $menu_header
     * @param <type> $menu_footer
     * @param <type> $default_class
     * @param <type> $current_class
     * @param <type> $parent
     */
    function show_menu($menu_number = NULL, $start_level=NULL, $recurse = NULL, $collapse = NULL, $item_template = NULL, $item_footer = NULL, $menu_header = NULL, $menu_footer = NULL, $default_class = NULL, $current_class = NULL, $parent = NULL) {
        global $wb;
        if (isset($menu_number))
            $wb->menu_number=$menu_number;
        if (isset($start_level))
            $wb->menu_start_level=$start_level;
        if (isset($recurse))
            $wb->menu_recurse=$recurse;
        if (isset($collapse))
            $wb->menu_collapse=$collapse;
        if (isset($item_template))
            $wb->menu_item_template=$item_template;
        if (isset($item_footer))
            $wb->menu_item_footer=$item_footer;
        if (isset($menu_header))
            $wb->menu_header=$menu_header;
        if (isset($menu_footer))
            $wb->menu_footer=$menu_footer;
        if (isset($default_class))
            $wb->menu_default_class=$default_class;
        if (isset($current_class))
            $wb->menu_current_class=$current_class;
        if (isset($parent))
            $wb->menu_parent=$parent;
        $wb->menu();
        unset($wb->menu_recurse);
        unset($wb->menu_parent);
        unset($wb->menu_start_level);
    }
}

if (!function_exists('page_content')) {
    /**
     *
     * @global array $TEXT
     * @global array $MENU
     * @global array $HEADING
     * @global array $MESSAGE
     * @global array $globals several global vars
     * @global datadase $database
     * @global wb $wb
     * @global string $global_name
     * @param int $block
     * @return void
     */
    function page_content($block = 1) {
        // Get outside objects
        global $TEXT,$MENU,$HEADING,$MESSAGE;
        global $globals;
        global $database;
        global $wb;
        $admin = $wb;

        if ($wb->page_access_denied==true) {
            echo $MESSAGE['FRONTEND_SORRY_NO_VIEWING_PERMISSIONS'];
            return;
        }
        if ($wb->page_no_active_sections==true) {
            echo $MESSAGE['FRONTEND_SORRY_NO_ACTIVE_SECTIONS'];
            return;
        }
        if(isset($globals) AND is_array($globals)) {
            foreach($globals AS $global_name) {
                global $$global_name;
            }
        }
        // Make sure block is numeric
        if (($block = intval($block)) == 0 ) { $block = 1;}
        // Include page content
        if (!defined('PAGE_CONTENT') OR $block!=1)
        {
            $page_id = intval($wb->page_id);
            if (($wb instanceof frontend) && !$wb->page_is_visible($wb->page)) { // SOLVED dw2015
             return ;
            }
        // First get all sections for this page
            $sql  = 'SELECT `section_id`, `module`, `publ_start`, `publ_end` ';
            $sql .= 'FROM `'.TABLE_PREFIX.'sections` ';
            $sql .= 'WHERE `page_id`='.$page_id.' AND `block`='.$block.' ';
            $sql .= 'ORDER BY `position`';
            if( !($query_sections = $database->query($sql)) ) { return; }
        // If none were found, check if default content is supposed to be shown
            if($query_sections->numRows() == 0) {
                if($wb->default_block_content == 'none') { return; }
                if (is_numeric($wb->default_block_content)) {
                    $page_id = $wb->default_block_content;
                } else {
                    $page_id = $wb->default_page_id;
                }
                $sql  = 'SELECT `section_id`, `module`, `publ_start`, `publ_end` ';
                $sql .= 'FROM `'.TABLE_PREFIX.'sections` ';
                $sql .= 'WHERE `page_id`='.$page_id.' AND `block`='.$block.' ';
                $sql .= 'ORDER BY `position`';
                if( !($query_sections = $database->query($sql)) ) { return; }
                // Still no cotent found? Give it up, there's just nothing to show!
                if($query_sections->numRows() == 0) { return; }
            }
            // Loop through them and include their module file
            while($section = $query_sections->fetchRow(MYSQLI_ASSOC)) {
                // skip this section if it is out of publication-date
                $now = time();
                if( !(($now<=$section['publ_end'] || $section['publ_end']==0) && ($now>=$section['publ_start'] || $section['publ_start']==0)) ) {
                    continue;
                }
                $section_id = $section['section_id'] ;
                $module = $section['module'] ;
                // check if module exists - feature: write in errorlog
                if(is_readable(WB_PATH.'/modules/'.$module.'/view.php')) {
                 // fetch content -- this is where to place possible output-filters (before highlighting)
                 ob_start() ; // fetch original content<div id="Sec103" class="section  m_modulename user-defined-class" >
                 $sSectionIdPrefix = (defined('SEC_ANCHOR') && SEC_ANCHOR != '') ? SEC_ANCHOR : 'Sec' ;
                 require (WB_PATH.'/modules/'.$module.'/view.php') ;
                 $content = ob_get_clean() ;
                 if($content != '') {
                   $sBeforeContent = ($sSectionIdPrefix == 'none') ? '' : "\n".'<div id="'.$sSectionIdPrefix.$section_id.'" class="section m_'.$module.'" >'."\n" ;
                   $sAfterContent = ($sSectionIdPrefix == 'none') ? '' : "\n".'</div><!-- '.$module.$section_id.' -->'."\n" ;
                   $content = $sBeforeContent.$content.$sAfterContent ;
                 }
                } else {
                    continue;
                }
                // highlights searchresults
                if (isset($_GET['searchresult']) && is_numeric($_GET['searchresult'])
                          && !isset($_GET['nohighlight'])
                          && isset($_GET['sstring'])
                          && !empty($_GET['sstring'])
                          ) {
                    $arr_string = explode(" ", $_GET['sstring']);
                    if($_GET['searchresult']==2) { // exact match
                        $arr_string[0] = str_replace("_", " ", $arr_string[0]);
                    }
                    echo search_highlight($content, $arr_string);
                } else {
                    echo $content;
                }
            }
        } else {   // Searchresults! But also some special pages,
         // e.g. guestbook (add entry), news (add comment) uses this
            ob_start(); // fetch original content
            require(PAGE_CONTENT);
            $content = ob_get_clean();
            // Apply Filters
            if(function_exists('OutputFilterApi')) {
                $content = OutputFilterApi('OpF?arg=special', $content);
            }
            echo $content;
        }
    }
}

if (!function_exists('show_content')) {
    function show_content($block=1) {
        page_content($block);
    }
}

if (!function_exists('show_breadcrumbs'))
{
    function show_breadcrumbs($sep = ' &raquo; ',$level = 0, $links = true, $depth = -1, $title = '', $print=true)
    {
        global $wb,$database,$MENU;
        $retVal = '';
        $page_id = $wb->page_id;
        $title = (trim($title) == '') ? $MENU['BREADCRUMB'] : $title;
        if ($page_id != 0)
        {
            $counter = 0;
            // get links as array
            $bread_crumbs = $wb->page_trail;
            $count = sizeof($bread_crumbs);
            // level can't be greater than sum of links
            $level = ($count <= $level ) ? $count-1 : $level;
            // set level from which to show, delete indexes in array
            $crumbs = array_slice($bread_crumbs, $level );
            $depth = ($depth <= 0) ? sizeof($crumbs) : $depth;
            // if empty array, set orginal links
            $crumbs = (!empty($crumbs)) ?  $crumbs : $wb->page_trail;
            $total_crumbs = ( ($depth <= 0) || ($depth > sizeof($crumbs)) ) ? sizeof($crumbs) : $depth;
            $retVal .= '<div class="breadcrumb">'.PHP_EOL.'<span class="title">'.$title.'</span>'.PHP_EOL;
          //  print_r($crumbs);
            foreach ($crumbs as $temp)
            {
                if($counter == $depth) { break; }
                // set links and separator
                    $sql  = 'SELECT * FROM `'.TABLE_PREFIX.'pages` WHERE `page_id`='.(int)$temp;
                    $query_menu = $database->query($sql);
                    $page = $query_menu->fetchRow();
                    $show_crumb = (($links == true) && ($temp != $page_id))
                            ? '<a href="'.page_link($page['link']).'" class="link">'.$page['menu_title'].'</a>'.PHP_EOL
                            : '<span class="crumb">'.$page['menu_title'].'</span>'.PHP_EOL;
                    // Permission
                    switch ($page['visibility'])
                    {
                        case 'none' :
                        case 'hidden' :
                        // if show, you know there is an error in a hidden page
                            $retVal .= $show_crumb.'&nbsp;';
                            break;
                        default :
                            $retVal .= $show_crumb;
                            break;
                    }
                    if ( ( $counter <> $total_crumbs-1 ) )
                    {
                        $retVal .= '<span class="separator">'.$sep.'</span>'.PHP_EOL;
                    }
                $counter++;
            }
            $retVal .=  "</div>".PHP_EOL;
            if ($print) { print $retVal;} else {return $retVal;}
        }
    }
}

// Function for page title
if (!function_exists('page_title')) {
    function page_title($spacer = ' - ', $template = '[WEBSITE_TITLE][SPACER][PAGE_TITLE]') {
        $vars = array('[WEBSITE_TITLE]', '[PAGE_TITLE]', '[MENU_TITLE]', '[SPACER]');
        $values = array(WEBSITE_TITLE, PAGE_TITLE, MENU_TITLE, $spacer);
        echo str_replace($vars, $values, $template);
    }
}

// Function for page description
if (!function_exists('page_description')) {
    function page_description() {
        global $wb;
        if ($wb->page_description!='') {
            echo $wb->page_description;
        } else {
            echo WEBSITE_DESCRIPTION;
        }
    }
}

// Function for page keywords
if (!function_exists('page_keywords')) {
    function page_keywords() {
        global $wb;
        if ($wb->page_keywords!='') {
            echo $wb->page_keywords;
        } else {
            echo WEBSITE_KEYWORDS;
        }
    }
}

// Function for page header
if (!function_exists('page_header')) {
    function page_header($date_format = 'Y') {
        echo WEBSITE_HEADER;
    }
}

// Function for page footer
if (!function_exists('page_footer')) {
    function page_footer($date_format = 'Y') {
        global $starttime;
        $vars = array('[YEAR]', '[PROCESS_TIME]');
        $processtime=array_sum(explode(" ",microtime()))-$starttime;
        $values = array(gmdate($date_format),$processtime);
        echo str_replace($vars, $values, WEBSITE_FOOTER);
    }
}
/* ------------------------------------------------------------------------------------------------ */
//  begin register_frontend_files
/* ------------------------------------------------------------------------------------------------ */

    function register_frontend_LoadOnFly ($bInsert=true)
    {
        static $bSriptLoaded=false;
        $sLoadOnFly = '';
        if ($bInsert&&!$bSriptLoaded){
            $sLoadOnFly .= "\t".'<script src="'.WB_URL.'/include/jquery/domReady.js" type="text/javascript"></script>'."\n";
            $sLoadOnFly .= "\t".'<script src="'.WB_URL.'/include/jquery/LoadOnFly.js" type="text/javascript"></script>'."\n";
            $bSriptLoaded = true;
        }
        return $sLoadOnFly;
    }
    function register_frontend_ScriptVars ($bInsert=true)
    {
        static $bSriptLoaded=false;
        $sScriptVars = '';
        if ($bInsert&&!$bSriptLoaded){
            $sScriptVars .= "\t"."<script type=\"text/javascript\">\n"
                ."\t\t".'/* inserted by register_frontend_modfiles */'."\n"
                ."\t\t"."var URL = '".WB_URL."';\n"
                ."\t\t"."var WB_URL = '".WB_URL."';\n"
                ."\t\t"."var THEME_URL = '".THEME_URL."';\n"
                ."\t\t"."var TEMPLATE_DIR = '".TEMPLATE_DIR."';\n"
                ."\t\t"."var TEMPLATE = '".TEMPLATE."';\n"
                ."\t\t"."var EDITOR = '".WYSIWYG_EDITOR."';\n"
                ."\t"."</script>\n";
            $bSriptLoaded = true;
            }
        return $sScriptVars;
    }

function bind_jquery ($file_id='jquery')
{
    $jquery_links = '';
    /* include the Javascript jquery api  */
    if( $file_id == 'jquery' && file_exists(WB_PATH .'/include/jquery/jquery-min.js'))
    {
        $jquery_links .= "\t".'<script src="'.WB_URL.'/include/jquery/jquery-min.js" type="text/javascript"></script>'."\n";
        $jquery_links .= "\t".'<script src="'.WB_URL.'/include/jquery/jquery-insert.js" type="text/javascript"></script>'."\n";
        $jquery_links .= "\t".'<script src="'.WB_URL.'/include/jquery/jquery-include.js" type="text/javascript"></script>'."\n";
        /* workout to insert ui.css and theme */
        $jquery_theme =  WB_PATH.'/modules/jquery/jquery_theme.js';
        $jquery_links .=  (file_exists($jquery_theme)
            ? "\t".'<script src="'.WB_URL.'/modules/jquery/jquery_theme.js" type="text/javascript"></script>'."\n"
            : "\t".'<script src="'.WB_URL.'/include/jquery/jquery_theme.js" type="text/javascript"></script>'."\n");
        /* workout to insert plugins functions, set in templatedir */
        $jquery_frontend_file = TEMPLATE_DIR.'/jquery_frontend.js';
        $jquery_links .= (file_exists(str_replace( WB_URL, WB_PATH, $jquery_frontend_file))
            ? "\t".'<script src="'.$jquery_frontend_file.'" type="text/javascript"></script>'
            : '');
    }
    return $jquery_links;
}

// Function to add optional module Javascript or CSS stylesheets into the <head> section of the frontend
if(!function_exists('register_frontend_modfiles'))
{
    function register_frontend_modfiles($file_id="css", $bOutput=true)
    {
        global $wb, $database, $include_head_link_css, $include_head_links, $page_id;
        $page_id = (@$page_id?:$wb->page_id);
        $aFilterSettings = getOutputFilterSettings();
        // sanity check of parameter passed to the function
        $file_id = strtolower($file_id);
        $aAllowedAction = array( 'css', 'script', 'js', 'jquery', 'javascript' );
        if (!in_array($file_id, $aAllowedAction)) { return false; }
        // define default baselink and filename for optional module javascript and stylesheet files
        $head_links = "";
        $base_file  = '';
        $base_link  = '';
        switch ($file_id)
        {
            case 'css':
                $base_link = "\t".'<link rel="stylesheet" type="text/css" href="'.WB_URL.'/modules/{MODULE_DIRECTORY}/frontend.css" media="screen" />'."\n";
                $base_file = "frontend.css";
                if(!empty($include_head_link_css))
                {
                  $head_links .=  !strpos($head_links, $include_head_link_css) ? $include_head_link_css : '';
                  $include_head_link_css = '';
                }
                break;
            case 'jquery':
/*----------------------------------------------------------------------------------------------*/
                $key = preg_replace('=^.*?filter([^\.\/\\\\]+)(\.[^\.]+)?$=is', '\1', 'filterScriptVars.php');
                $bLoadScriptVars = (isset($aFilterSettings[$key])&&$aFilterSettings[$key] ?false:true);
                $base_link .= register_frontend_ScriptVars($bLoadScriptVars);
/*----------------------------------------------------------------------------------------------*/
                $key = preg_replace('=^.*?filter([^\.\/\\\\]+)(\.[^\.]+)?$=is', '\1', 'filterLoadOnFly.php');
                $bLoadOnFly = (isset($aFilterSettings[$key])&&$aFilterSettings[$key] ?false:true);
                $base_link .= register_frontend_LoadOnFly($bLoadOnFly);
/*----------------------------------------------------------------------------------------------*/
                $key = preg_replace('=^.*?filter([^\.\/\\\\]+)(\.[^\.]+)?$=is', '\1', 'filterJquery.php');
                $bLoadJquery = (isset($aFilterSettings[$key])&&$aFilterSettings[$key] ?false:true);
                if ($bLoadJquery) {
                    $base_link .= bind_jquery($file_id);
                }
                break;
            case 'js':
                $base_file = "frontend.js";
                $key = preg_replace('=^.*?filter([^\.\/\\\\]+)(\.[^\.]+)?$=is', '\1', 'filterFrontendJs.php');
                $bLoadFrontendJs = (isset($aFilterSettings[$key])&&$aFilterSettings[$key] ?false:true);
                if ($bLoadFrontendJs) {
                    $base_link .= "\t".'<script src="'.WB_URL.'/modules/{MODULE_DIRECTORY}/frontend.js" type="text/javascript"></script>';
                    if (!empty($include_head_links))
                    {
                      $head_links .= !strpos($head_links, $include_head_links) ? $include_head_links."\n" : '';
                      $include_head_links = '';
                    }
                }
                break;
            case 'script_old':
                break;
            default:
                break;
        }
        if( $file_id != 'jquery_old')
        {
            // gather information for all models embedded on actual page
            $sql  = 'SELECT `module` FROM `'.TABLE_PREFIX.'sections` '
                  . 'WHERE `page_id` = '.(int)$page_id;
            if( ($oModules = $database->query($sql)) )
            {
                while($row = $oModules->fetchRow( MYSQLI_ASSOC ))
                {
                    // check if page module directory contains a frontend.js or frontend.css file
                    if(file_exists(WB_PATH ."/modules/" .$row['module'] ."/$base_file"))
                    {
                    // create link with frontend.js or frontend.css source for the current module
                        $tmp_link = str_replace("{MODULE_DIRECTORY}", $row['module'], $base_link);
                        // define constant indicating that the register_frontent_files was invoked
                        if($file_id == 'css')
                        {
                            if(!defined('MOD_FRONTEND_CSS_REGISTERED')) define('MOD_FRONTEND_CSS_REGISTERED', true);
                        } else {
                            if(!defined('MOD_FRONTEND_JAVASCRIPT_REGISTERED')) define('MOD_FRONTEND_JAVASCRIPT_REGISTERED', true);
                        }
                        // ensure that frontend.js or frontend.css is only added once per module type
                        if( $tmp_link && strpos($head_links, $tmp_link) === false)
                        {
                            $head_links .= $tmp_link;
                        }
                    };
                }
            }
        }
        if ($bOutput) { print $head_links."\n";} else {return $head_links."\n";}
    }
}

// Function to add optional module Javascript into the <body> section of the frontend
if(!function_exists('register_frontend_modfiles_body'))
{
    function register_frontend_modfiles_body($file_id="js", $print=true)
    {
        // sanity check of parameter passed to the function
        $file_id = strtolower($file_id);
        $aAllowedAction = array( 'css', 'js', 'jquery', 'javascript' );
        if(!in_array($file_id, $aAllowedAction)) { return false; }

       // define constant indicating that the register_frontent_files was invoked
       if(!defined('MOD_FRONTEND_BODY_JAVASCRIPT_REGISTERED')) define('MOD_FRONTEND_BODY_JAVASCRIPT_REGISTERED', true);
        global $wb, $database, $include_body_links;
        // define default baselink and filename for optional module javascript files
        $body_links = "";

        /* include the Javascript jquery api  */
        $body_links .= bind_jquery($file_id);

        if($file_id !== "css" && $file_id == "js" && $file_id !== "jquery")
        {
            $base_link = "\t".'<script src="'.WB_URL.'/modules/{MODULE_DIRECTORY}/frontend_body.js" type="text/javascript"></script>';
            $base_file = "frontend_body.js";
            // ensure that frontend_body.js is only added once per module type
            if(!empty($include_body_links))
            {
                if(strpos($body_links, $include_body_links) === false)
                {
                    $body_links .= $include_body_links;
                }
                $include_body_links = '';
            }
            // gather information for all models embedded on actual page
            $page_id = $wb->page_id;
            $sql = 'SELECT `module` FROM `'.TABLE_PREFIX.'sections` ';
            $sql .= 'WHERE `page_id` = '.(int)$page_id.' AND `module`<>\'wysiwyg\'';
            if( ($query_modules = $database->query($sql)) )
            {
                while($row = $query_modules->fetchRow(MYSQLI_ASSOC))
                {
                    // check if page module directory contains a frontend_body.js file
                    if(file_exists(WB_PATH ."/modules/" .$row['module'] ."/$base_file"))
                    {
                    // create link with frontend_body.js source for the current module
                        $tmp_link = str_replace("{MODULE_DIRECTORY}", $row['module'], $base_link);
                        // define constant indicating that the register_frontent_files_body was invoked
                            if(!defined('MOD_FRONTEND_BODY_JAVASCRIPT_REGISTERED')) { define('MOD_FRONTEND_BODY_JAVASCRIPT_REGISTERED', true);}
                        // ensure that frontend_body.js is only added once per module type
                        if(strpos($body_links, $tmp_link) === false)
                        {
                            $body_links .= $tmp_link;
                        }
                    }
                }
            }
        }
        if ($print) { print $body_links."\n";} else {return $body_links."\n";}
//        print $body_links."\n"; ;
    }
}

    function moveCssToHead($content) {
       return OutputFilterApi('CssToHead', $sContent);
    }
