<?php
/* Encapsulation de HtmlPurifier */
require_once (__DIR__ . '/htmlpurifier/HTMLPurifier.auto.php');

class TheliaPurifier {

	private static $instance = false;

	private static $purifier = false;

	private function __construct() {

		ActionsModules::instance()->appel_module("htmlpurifierinit");

		$this->set_front_mode();
	}

	public static function instance() {
		if (self::$instance === false) {
			self::$instance = new TheliaPurifier();
		}

		return self::$instance;
	}

	public function purifier($texte, $config = null) {
		return self::$purifier->purify($texte, $config);
	}

	/*
	 * The standard, restrictive, front-office htmlpurifier configuration
	 */
	public function set_front_mode() {

		$config = HTMLPurifier_Config::createDefault();
		$config->set('Core.Encoding', "UTF-8");

		self::$purifier = new HTMLPurifier($config);
	}

	/*
	 * A more permissive config for htmlpurifier in the back-office
	 */
	public function set_admin_mode() {             
            
            $mask = '#^(http|https)://(%s)#';
            
            $allowURI = Variable::lire('htmlpurifier_whiteList','www.youtube.com/embed/\nplayer.vimeo.com/video/\nmaps.google.*/');
                                    
	    $config = HTMLPurifier_Config::createDefault();
	    $config->set('Core.Encoding', "UTF-8");
	    $config->set('HTML.DefinitionID', 'Thelia back-office content filter');
	    $config->set('HTML.DefinitionRev', 1);
	    $config->set('Attr.EnableID', true);
	    $config->set('CSS.AllowTricky', true);
	    $config->set('HTML.Allowed', 'a,strong,em,div,p,span,img,li,ul,ol,sup,sub,small,big,code,blockquote,h1,h2,h3,h4,h5, iframe');
	    $config->set('HTML.AllowedAttributes', 'a.href,a.title,img.src,img.alt,img.title,img.width,img.height,*.style,*.id,*.class, iframe.width, iframe.height, iframe.src, iframe.frameborder');
	    $config->set('AutoFormat.Linkify', true);
	    $config->set('HTML.Doctype', 'XHTML 1.0 Transitional');
            //Filter.Youtube est déprécié, à remplacer dans thelia 1.5.3.5, voir début de la méthode
//            $config->set('Filter.YouTube', true);
            
            $config->set('HTML.SafeObject',true);
            $config->set('Output.FlashCompat', true);
            $config->set('HTML.SafeIframe', true);
            $config->set('URI.SafeIframeRegexp',  sprintf($mask,str_replace("\n", "|",$allowURI)));

	    $config->set('HTML.TidyLevel', 'medium');
            
	    // Recreate a new instance with this config
	    self::$purifier = new HTMLPurifier($config);
	}
}
?>