<?php

/**
 * DokuWiki DAVCal PlugIn - Cache component
 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
 * @author  Andreas Böhler <dev@aboehler.at>
 */

if(!defined('DOKU_INC')) die();

class action_plugin_davcard_cache extends DokuWiki_Action_Plugin {

    function __construct() {

    }

    function register(Doku_Event_Handler $controller) {
        $controller->register_hook('PARSER_CACHE_USE', 'BEFORE', $this, 'handle_parser_cache_use');
    }

  function handle_parser_cache_use(Doku_Event $event, $param)
  {
      $cache = &$event->data;
      if(!isset($cache->page)) return;
      //purge only xhtml cache
      if($cache->mode != "xhtml") return;
      
      $meta = p_get_metadata($cache->page, 'plugin_davcard');
      if($meta === null)
        return;
      // Force re-caching if the webdavclient has synced
      if(isset($meta['webdavclient']))
      {
          $wdc =& plugin_load('helper', 'webdavclient');
          if(is_null($wdc))
            return;
          foreach($meta['webdavclient'] as $connectionId)
          {
            $cache->depends['files'][] = $wdc->getLastSyncChangeFileForConnection($connectionId);
          }
      }
      // Disable caching if there is a tabular addressbook
      if(isset($meta['addressbooks']) && in_array($cache->page, $meta['addressbooks']['id']))
      {
            $event->preventDefault();
            $event->stopPropagation();
            $event->result = false;
      }    
  }
 
}