<?
/**
 * @file
 * Generates a sitemap
 * @todo reuse functionality from InputParser
 */

/// The final output variable
$out = '<?xml version="1.0" encoding="UTF-8"?>';
$out .= "\n";
$out .= '<urlset
      xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
            http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
';
include_once 'CacheTimeCheck.inc';

/// @cond
$baseDir = dirname(__FILE__);
$cache = CacheTimeCheck::instance(__FILE__);
$cache->includeOnce('common-functions.inc', $baseDir);


$cache = CacheTimeCheck::instance(__FILE__);
$cache->includeOnce('Options.inc', dirname(__FILE__));
/// @endcond

$master = new DOMDocument();
$master->load("master.xml");

$options = new Options($master);

$base = 'http://' . $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
$base = substr($base, 0, strrpos($base, '/'));

$acceptedLanguages = $options->getAcceptedLanguages();

foreach($options->getAcceptedLanguages() as $lang) {
  if ($handle = opendir("${lang}")) {
    while (false !== ($entry = readdir($handle))) {
      if (endsWith($entry, '.xml')) {
	$fentry = "${lang}/${entry}";
	$doc = new DOMDocument();

	if (file_exists($fentry)) {
	  $doc->load($fentry);

	  $opts = array();
	  if (count($acceptedLanguages) > 1) {
	    $opts['lang'] = $lang;
	  }

	  $toplevel = $doc->getElementsByTagName("toplevel");

	  if($toplevel->length) {
	    $name = substr($entry, 0, -4);

	    if ($name != $options->getInputDefault('name')) {
	      $opts['name'] = $name;
	    }

	    $optstring = opttostring($opts);

	    $location = "${base}/${optstring}";
	    $headers = getHeaders($location);

	    $location = htmlentities($location);

	    $lastmod = $headers["Last-Modified"];
	    $lastmod = strtotime($lastmod);
	    $lastmod = date(DateTime::W3C, $lastmod);

	    $out .= "<url>\n";
	    $out .= "<loc>${location}</loc>\n";
	    $out .= "<lastmod>${lastmod}</lastmod>\n";
	    $out .= "</url>\n";
	  }
	}
      }
    }
    closedir($handle);
  }
}

$out .= '</urlset>';

header('Content-type: application/xml');
print $out;
?>