<?php
/**
 * FriendFeed plugin
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Andreas Gohr <andi@splitbrain.org>
 */
// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();

if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'syntax.php');
require_once(DOKU_INC.'inc/HTTPClient.php');
require_once(DOKU_INC.'inc/JSON.php');
require_once(DOKU_PLUGIN.'friendfeed/friendfeed.php');

class syntax_plugin_friendfeed extends DokuWiki_Syntax_Plugin {

    /**
     * return some info
     */
    function getInfo(){
        return array(
            'author' => 'Andreas Gohr',
            'email'  => 'andi@splitbrain.org',
            'date'   => '2008-03-30',
            'name'   => 'Friendfeed Plugin',
            'desc'   => 'Display data from friendfeed.com',
            'url'    => 'http://wiki.splitbrain.org/plugin:friendfeed',
        );
    }

    /**
     * What kind of syntax are we?
     */
    function getType(){
        return 'substition';
    }

    /**
     * What about paragraphs?
     */
    function getPType(){
        return 'block';
    }

    /**
     * Where to sort in?
     */
    function getSort(){
        return 155;
    }


    /**
     * Connect pattern to lexer
     */
    function connectTo($mode) {
        $this->Lexer->addSpecialPattern('~~friendfeed~~',$mode,'plugin_friendfeed');
    }


    /**
     * Handle the match
     */
    function handle($match, $state, $pos, &$handler){
        return array();
    }

    /**
     * Create output
     */
    function render($format, &$R, $data) {
        global $conf;

        if($format == 'metadata'){
            $this->meta['date']['valid']['age'] = $this->getConf('cachetime');
            return true;
        }

        if($format != 'xhtml') return false;

        $user      = $this->getConf('user');
        $apikey    = $this->getConf('apikey');
        $s_exclude = $this->getConf('serviceexclude');
        $l_exclude = $this->getConf('linkexclude');
        $target    = ($conf['target']['extern'])? 'target="'.$conf['target']['extern'].'"':'';

        $ff = new FriendFeed($user,$pass);
        $feed = $ff->fetch_user_feed($user, null, 0, 60);

        if(is_null($feed)){
            $R->doc .= 'error on fetching friend feed';
            return true;
        }

        $doc = '<ul class="friendfeed_plugin">';
        foreach($feed->entries as $entry){
            // skip excludes
            if($s_exclude && 
                (preg_match('/'.$s_exclude.'/',$entry->service->id) ||
                 preg_match('/'.$s_exclude.'/',$entry->service->name) )) continue;
            if($l_exclude && preg_match('/'.$l_exclude.'/',$entry->link)) continue;

            $doc .= '<li><div class="li">';

            // images?
            if(count($entry->media)){
                $img = ml($entry->media[0]->thumbnails[0]->url,'w=120');
            }else{
                $img = 'http://www.artviper.net/screenshots/screener.php?q=100&amp;w=120&amp;h=90&amp;sdx=1024&amp;sdy=768&amp;url='.
                       rawurlencode($entry->link);
            }
            $doc .= '<a href="'.hsc($entry->link).'" '.$target.'>';
            $doc .= '<img src="'.$img.'" width="120" alt="" align="left" class="media_left" />';
            $doc .= '</a>';


            // the link
            $doc .= '<b><a href="'.hsc($entry->link).'" '.$target.' class="urlextern">'.hsc($entry->title).'</a></b>';

            // use first comment by user as description
            $doc .= '<p>';
            if(count($entry->comments) && $entry->comments[0]->user->nickname == $user){
                $doc .= $entry->comments[0]->body;
                array_shift($entry->comments);
            }
            // add service
            $doc .= ' <i>(shared&nbsp;via&nbsp;<a href="'.hsc($entry->service->profileUrl).'" '.$target.' style="background: transparent url('.$entry->service->iconUrl.') top left no-repeat; padding-left: 18px">'.hsc($entry->service->name).'</a>)</i>';
            $doc .= '</p>';

            // add comments
            $doc .= '<ul>';
            if(count($entry->comments)){
                foreach($entry->comments as $com){
                    $doc .= '<li><div class="li">';
                    $doc .= '<a href="'.$com->user->profileUrl.'" '.$target.'>'.hsc($com->user->name).'</a>: ';
                    $doc .= hsc($com->body);
                    $doc .= '</div></li>';
                }
            }
            $doc .= '<li class="add"><div class="li">';
            $doc .= '<a href="http://friendfeed.com/e/'.$entry->id.'?login=1&amp;comment='.$entry->id.'" '.$target.'>Add Comment</a>';
            $doc .= '</div></li>';
            $doc .= '</ul>';

            $doc .= '</div></li>';
        }
        $doc .= '</ul>';

        $R->doc .= $doc;

        return true;
    }


    /**
     * Create Feed output
     *
     * @fixme contains duplicate code from the render method
     */
    function feed() {
        global $conf;

        $user      = $this->getConf('user');
        $apikey    = $this->getConf('apikey');
        $s_exclude = $this->getConf('serviceexclude');
        $l_exclude = $this->getConf('linkexclude');
        $target    = ($conf['target']['extern'])? 'target="'.$conf['target']['extern'].'"':'';

        // prepare caching and handle conditional requests
        $cache = getCacheName($user.$s_exclude.$l_exclude,'.friendfeed');
        header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
        header('Pragma: public');
        header('Content-Type: application/xml; charset=utf-8');
        $cmod = @filemtime($cache);
        if($cmod && $cmod+$this->getConf('cachetime') >time()){
            http_conditionalRequest($cmod);
            if($conf['allowdebug']) header("X-CacheUsed: $cache");
            echo io_readFile($cache);
            exit;
        } else {
            http_conditionalRequest(time());
        }

        $ff = new FriendFeed($user,$pass);
        $feed = $ff->fetch_user_feed($user, null, 0, 60);

        if(is_null($feed)){
            die('error on fetching friendfeed');
        }

        $rss = new DokuWikiFeedCreator();
        $rss->cssStyleSheet  = DOKU_URL.'lib/exe/css.php?s=feed';
        $rss->title = $user."'s FriendFeed";

        foreach($feed->entries as $entry){
            // skip excludes
            if($s_exclude && 
                (preg_match('/'.$s_exclude.'/',$entry->service->id) ||
                 preg_match('/'.$s_exclude.'/',$entry->service->name) )) continue;
            if($l_exclude && preg_match('/'.$l_exclude.'/',$entry->link)) continue;

            $item = new FeedItem();
            $item->date  = date('r',$entry->published);
            $item->link  = $entry->link;
            $item->title = $entry->title;

            $doc = '';
            // images?
            if(count($entry->media)){
                $img = ml($entry->media[0]->thumbnails[0]->url,'w=120',true,'&',true);
            }else{
                $img = 'http://www.artviper.net/screenshots/screener.php?q=100&w=120&h=90&sdx=1024&sdy=768&url='.
                       rawurlencode($entry->link);
            }
            $doc .= '<a href="'.hsc($entry->link).'" '.$target.'>';
            $doc .= '<img src="'.$img.'" width="120" alt="" align="left" class="media_left" />';
            $doc .= '</a>';


            // use first comment by user as description
            $doc .= '<p>';
            if(count($entry->comments) && $entry->comments[0]->user->nickname == $user){
                $doc .= $entry->comments[0]->body;
                array_shift($entry->comments);
            }
            // add service
            $doc .= ' <i>(via&nbsp;<a href="'.hsc($entry->service->profileUrl).'" '.$target.' style="background: transparent url('.$entry->service->iconUrl.') top left no-repeat; padding-left: 18px">'.hsc($entry->service->name).'</a>)</i>';
            $doc .= '</p>';

            $doc .= '<a href="http://friendfeed.com/e/'.$entry->id.'?login=1&comment='.$entry->id.'" '.$target.'>Add Comment</a>';

            $item->description = $doc;

            $rss->addItem($item);
        }

        $feed = $rss->createFeed($conf['rss_type'],'utf-8');
        io_saveFile($cache,$feed);
        echo $feed;
    }


}

//Setup VIM: ex: et ts=4 enc=utf-8 :