<?php
/**
 * Tag converter
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package wb
 * @subpackage Markup
 */

WBClass::load('WBMarkup_Converter');

/**
 * Tag converter
 *
 * Convert node to node
 *
 * @version 0.1.0
 * @package wb
 * @subpackage Markup
 */
class WBMarkup_Converter_Cf_Fetcher extends WBMarkup_Converter
{
    /**
     * URL dictionary 
     * @var WBDictionary_Url
     */
    protected $dict;
    
    /**
    * transform Xinha Tags to XML
    *
    * @todo implement this method
    * @param array $node to be modified document node
    * @return bool true on success
    */
    public function toXml(&$node)
    {
    }

   /**
    * transform Xml to WXml (html) tags
    *
    * @todo implement this method
    * @param array $node to be modified document node
    * @return bool true on success
    */
    public function toWxml(&$node)
    {
        $xinha  =   array(
                            'ns'            =>  '',
                            'tag'           =>  'a',
                            'attributes'    =>  array(),
                            'isEmpty'       =>  false,
                            'cData'         =>  $node['cData']
                        );

        
        list($type, $uri)   =   explode('://', $node['attributes']['url']);
        $type   =   strtolower($type);
        
        if ('link' != $type) {
            WBClass::load('WBException_Xml');
            throw new WBException_Xml('Unkonwn type "' . $type . '" to convert!', 1, __CLASS__);
            $node   =   $xinha;
            return false;
        }
                    
        $this->dict   =   WBClass::create('WBDictionary_URL');        
        list($proto, $url, $cData)  =   explode('/', $uri);
        $proto              =   strtolower($proto);
        $url                =   htmlspecialchars_decode(str_replace('|', '/', $url));
        $xinha['cData'][]   =   $cData;
                
        switch ($proto) {
            case 'wikipedia':
                $url    =   'http://' . $url;
                $p      =   parse_url($url);
                parse_str($p['query'], $query);
                if (isset($query[`title`])) {
                    $title  =   'Wikipedia Article &quot;' . $query[`title`] . '&quot;';
                } else {
                    $title  =   'Wikipedia Article';
                }

                break;

            case 'path':
                /**
                 * @todo do something useful
                 */
                $title  =   htmlspecialchars($cData);
                $url    =   '#' . $url;
                break;

            default:
                $title  =   htmlspecialchars($url);
                $url    =   $proto . '://' . $url;
                break;

        }

        $this->dict->addWord($url);
        $atts   =   array(
                    'wb:dialog' =>  'url',
                    'wb:value'  =>  $title,
                    'href'      =>  $this->dict->getWord(),
                    'urlid'     =>  $this->dict->getid(),
                    'title'     =>  'Double click to edit',
                    'target'    =>  '_blank'
                    );
                    
        $xinha['attributes']    =   $atts;
        $node   =   $xinha;
        return true;
    }
    
   /**
    * transform XML to Html
    *
    * @param array $node to be modified document node
    * @return bool true on success
    */
    public function toHtml(&$node)
    {
        list($type, $uri)   =   explode('://', $node['attributes']['url']);
        $type   =   strtolower($type);
        $copy   =   $node;
        $node   =   array(
                        'ns'            =>  null,
                        'tag'           =>  null,
                        'attributes'    =>  array(),
                        'isEmpty'       =>  $copy['isEmpty'],
                        'cData'         =>  $copy['cData']
        );

        switch ($type) {
            case 'link':
                $node['tag']    =   'a';
                list($proto, $url, $cData)  =   explode('/', $uri);
                $proto  =   strtolower($proto);
                $url    =   htmlspecialchars_decode(str_replace('|', '/', $url));

                $node['isEmpty']    =   false;
                $node['cData'][]    =   $cData;

                switch ($proto) {
                    case 'wikipedia':
                        $url    =   'http://' . $url;
                        $p      =   parse_url($url);
                        parse_str($p['query'], $query);
                        if (isset($query[`title`])) {
                            $title  =   $query[`title`];
                        }

                        $node['attributes']['title']    =   'Wikipedia Article &quot;' . $title . '&quot;';
                        $node['attributes']['target']   =   '_blank';
                        break;

                    case 'http';
                        $url    =   'http://' . $url;
                        $node['attributes']['title']    =   'Visit site &quot;' . htmlspecialchars($url) . '&quot;';
                        $node['attributes']['target']   =   '_blank';
                        break;

                    case 'ftp':
                        $url    =   'ftp://' . $url;
                        $node['attributes']['title']    =   'FTP download &quot;' . htmlspecialchars($url) . '&quot;';
                        $node['attributes']['target']   =   '_blank';
                        break;


                    case 'path':
                        /**
                         * @todo do something useful
                         */
                        $url    =   '#' . $url;
                        $node['attributes']['title']    =   htmlspecialchars($cData);
                        break;

                    default:
                        echo $proto . "<pre>" . var_export( $copy, true ) . "</pre>\n";
                        break;
                }


                $node['attributes']['href']     =   $url;
                break;

            default:
                WBClass::load('WBException_Xml');
                throw new WBException_Xml('Unkonwn type "' . $type . '" to convert!', 1, __CLASS__);
                break;

        }
    }
}