<?php 
/**
*
* Responsible for loading the indexed search class and initiating the reindex command.
* @package Utilities
*/
 
defined('C5_EXECUTE') or die("Access Denied.");
class GenerateSitemap extends Job {
 
  public function getJobName() {
	  return t('Generate Sitemap File');
  }
 
  public function getJobDescription() {
	  return t("Generate the sitemap.xml file that search engines use to crawl your site.");
  }
 
  function run() {
 
    $ni = Loader::helper('navigation');
 
    $xmlFile = DIR_BASE.'/sitemap.xml';
    $xmlHead = "<" . "?" . "xml version=\"1.0\" encoding=\"" . APP_CHARSET . "\"?>\n"
	        ."<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
    $home = '';
    $c = Page::getByID(1, "ACTIVE");
    $changefreq = $c->getAttribute('sitemap_changefreq');
    $priority = $c->getAttribute("sitemap_priority");
 
    if ($changefreq == '') {
      $changefreq = 'weekly';
    }
    if ($priority == '') {
      $priority = '1.0';
    }
    $home .= "<url>\n";
    $home .= "<loc>". BASE_URL.DIR_REL."</loc>\n";
    $home .= "  <lastmod> " . date('Y-m-d') . "</lastmod>\n";
    $home .= "  <changefreq>" . $changefreq . "</changefreq>\n";
    $home .= "  <priority>" . $priority . "</priority>\n";
    $home .= "</url>\n";
    $xmlFoot = "</urlset>\n";
 
    if (!file_exists($xmlFile)) @touch($xmlFile);
 
    if (is_writable($xmlFile)) {
      if (!$handle = fopen($xmlFile, 'w')) {
	      throw new Exception(t("Cannot open file %s", $xmlFile));
      }
 
      fwrite($handle, $xmlHead);
      fwrite($handle, $home);
      fflush($handle);
 
      $db = Loader::db();
      $collection_attributes = Loader::model('collection_attributes');
      $r = $db->query("select cID from Pages where cID > 1 order by cID asc");
      $g = Group::getByID(GUEST_GROUP_ID);
      $nh = Loader::helper('navigation');
 
      while ($row = $r->fetchRow()) {
	      $c = Page::getByID($row['cID'], 'ACTIVE');
	      $g->setPermissionsForObject($c);
	      if ($c->isSystemPage()) {
		      continue;
	      }
 
	      if($c->getAttribute("exclude_sitemapxml")) {
		      continue;
	      }
 
	      if($c->isExternalLink()) {
		      continue;
	      } 
 
	      if ($g->canRead()) {			
 
		      $name = ($c->getCollectionName()) ? $c->getCollectionName() : '(No name)';
		      $cPath = $ni->getCollectionURL($c);
		      $changefreq = $c->getAttribute('sitemap_changefreq');
		      $priority = $c->getAttribute("sitemap_priority");
 
		      if ($changefreq == '') {
			      $changefreq = 'weekly';
		      }
		      if ($priority == '') {
			      $priority = '0.' . round(rand(1, 5));
		      }
 
		      $vo = $c->getVersionObject();
 
		      $node = "";		
		      $node .= "<url>\n";
		      $node .= "<loc>" . $cPath . "</loc>\n";
		      $node .= "  <lastmod>". substr($vo->getVersionDateCreated(), 0, 10)."</lastmod>\n";
		      $node .= "  <changefreq>".$changefreq."</changefreq>\n";
		      $node .= "  <priority>".$priority."</priority>\n";
		      $node .= "</url>\n";
 
		      fwrite($handle, $node);
		      fflush($handle);
 
	      }
      }
 
      fwrite($handle, $xmlFoot);
      fflush($handle);
      fclose($handle);
 
      return t("Sitemap XML File Saved.");
 
    } else {
      throw new Exception(t("The file %s is not writable", $xmlFile));
    }
  }
 
}
 
?>