<?php
/**
 * wbModule: Del.icio.us
 *
 * @author gERD Schaufelberger <gerd@exit0.net>
 * @copyright 2005 by http://wombat.exit0.net
 * @package wombatModule
 * @subpackage Blogger
 */
 
/**
 * Del.icio.us RSS feed reader
 *
 * @version 1.1.0
 * @package wombatModule
 * @subpackage Blogger
 */
class wbModule_Rss extends wbModule
{
   /**
    * Del.icio.us
    *
    * -tmpldir location of template files
    *
    * @access private
    * @public  array   $_params
    */
    public $_params = array(
                        'tmpldir'   =>  'module/Rss',
                        'url'       =>  'http://del.icio.us/rss',
                        
                    );

   /**
    * some request defaults
    *
    * @access private
    * @public  array   $_params
    */
    public $_requestDefaults = array(
                        'action'    =>  'list',
                    );

   /**
    * location of cache folder 
    * @access private
    * @public  string $_cacheDir
    */
    public $_cacheDir = null;

   /**
    * load required objects
    *
    * @access public
    * @return boolean $result true on success
    */
    function __construct() {
        wbFactory::includeClass( 'wbFile' );
        $this->_cacheDir    =   wbFactory::getParam( 'baseDir' ) . '/' .wbFactory::getParam( 'varDir' ) . '/cache/module/Rss';
    }

   /**
    * constructor wrapper for PHP4
    *
    * @access public
    * @see __construct()
    */
    function wbModule_Delicious() {
        $this->__construct();
    }

   /**
    * recieve content
    *
    *
    * 
    * @return string $html
    */
    function getHtml() {
    
        $check  =   $this->_checkRequiredParams( array( 'url', 'tmpldir' ) );
        if( patErrorManager::isError( $check ) ) {
            return $check;
        }
    
        $url    =   $this->_params['url'];        
        $cache  =   $this->_cacheDir . '/' . md5( $url );
        
        if( wbFile::isNewer( $cache, 3600, false ) ) {
            $data   =   unserialize( wbFile::load( $cache ) );
        }
        else {
            $data   =   $this->_loadRss( $url );
            wbFile::save( $cache, serialize( $data ) );
        }
        
        
        $this->_loadTemplates( 'list' );
        $this->_tmpl->addVars( 'wbModule_Rss', $data['channel'], 'CHANNEL_' );
        $this->_tmpl->addRows( 'item_entry', $data['items'] );
        
        return $this->_tmpl->getParsedTemplate( 'wbModule_Rss' );
        
        return "<pre>" . print_r( $data, true ) . "</pre>";
        
    }

   /**
    * download url
    *
    * @access private
    * @param string $url
    * @return string $html
    */
    function _loadRss( $url ) {
        $data   =   array();
        
        wbFactory::includeClass( 'XML_RSS' );

        $rss = new XML_RSS( $url );
        $rss->parse();
        
        $data['channel']    =   $rss->getChannelInfo();
        $data['items']      =   $rss->getItems();
        // $data['images']         =   $rss->getImages();
        return $data;
    }
    
}