<?php

// must be run within Dokuwiki
if (!defined('DOKU_INC')) die();
class helper_plugin_approve extends DokuWiki_Plugin {

    /**
     * Check if we should use approve in page
     *
     * @param string $id
     *
     * @return bool
     */
    function use_approve_here($id) {
        $apr_namespaces = $this->getConf('apr_namespaces');
        $no_apr_namespaces = $this->getConf('no_apr_namespaces');

        if ($this->in_namespace($no_apr_namespaces, $id)) {
            return false;
        //use apr_namespaces
        } elseif (trim($apr_namespaces) != '') {
            if ($this->in_namespace($apr_namespaces, $id)) {
                return true;
            }
            return false;
        }

        return true;
    }
     /**
     * checks if an id is within one of the namespaces in $namespace_list
     *
     * @param string $namespace_list
     * @param string $id
     *
     * @return bool
     */
    function in_namespace($namespace_list, $id) {
        // PHP apparantly does not have closures -
        // so we will parse $valid ourselves. Wasteful.
        $namespace_list = preg_split('/\s+/', $namespace_list);
       
        //if(count($valid) == 0) { return true; }//whole wiki matches
        if(count($namespace_list) == 1 && $namespace_list[0] == "") { return false; }//whole wiki matches

        $id = trim($id, ':');
        $id = explode(':', $id);

        // Check against all possible namespaces
        foreach($namespace_list as $namespace) {
            $namespace = explode(':', $namespace);
            $current_ns_depth = 0;
            $total_ns_depth = count($namespace);
            $matching = true;

            // Check each element, untill all elements of $v satisfied
            while($current_ns_depth < $total_ns_depth) {
                if($namespace[$current_ns_depth] != $id[$current_ns_depth]) {
                    // not a match
                    $matching = false;
                    break;
                }
                $current_ns_depth += 1;
            }
            if($matching) { return true; } // a match
        }
        return false;
    }
    
    function page_sum($ID, $REV) {
		$m = p_get_metadata($ID);
		$changelog = new PageChangeLog($ID);

		//sprawdź status aktualnej strony
		if ($REV != 0) {
			$ch = $changelog->getRevisionInfo($REV);
			$sum = $ch['sum'];
		} else {
			$sum = $m['last_change']['sum'];
		}
		return $sum;
	}
}