<?php

/** DokuWiki Plugin rating (Syntax Component)
 *
 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
 * @author  Andreas Gohr <gohr@cosmocode.de>
 */

// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();

class syntax_plugin_rating extends DokuWiki_Syntax_Plugin {

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

    /**
     * Where to sort in?
     */
    function getSort() {
        return 200;
    }

    /**
     * Connect pattern to lexer
     */
    function connectTo($mode) {
        $this->Lexer->addSpecialPattern('\\{\\{rating(?:.*?)\\}\\}', $mode, 'plugin_rating');
    }

    /**
     * Handle the match
     */
    function handle($match, $state, $pos, Doku_Handler $handler) {
        if ($state==DOKU_LEXER_SPECIAL) {
            $options = array('lang' => null, 'startdate' => null, 'tag' => 'ul', 'score' => 'false' );
            $match = rtrim($match,'\}');
            $match = substr($match,8);
            if ($match != '') {
                $match = ltrim($match,'\|');
                $match = explode(",", $match);
                foreach($match as $option) {
                    list($key, $val) = explode('=', $option);
                    $options[$key] = $val;
                }
            }
            return array($state, $options);
        } else {
            return array($state, '');
        }
    }

    /**
     * Create output
     *
     * @param string $format Renderer mode (supported modes: xhtml)
     * @param Doku_Renderer $renderer The renderer
     * @param array $data The data from the handler() function
     * @return bool If rendering was successful.
     */
    function render($format, Doku_Renderer $renderer, $data) {
        if($format == 'metadata') return false;
        if($data[0] != DOKU_LEXER_SPECIAL) return false;

        $hlp  = plugin_load('helper', 'rating');
        $list = $hlp->best($data[1]['lang'],$data[1]['startdate'], 20);

        if($data[1]['tag'] == 'ol') {
            $renderer->listo_open();
        } else {
            $renderer->listu_open();
        }

        $num_items=0;
        foreach($list as $item) {
            if (auth_aclcheck($item['page'],'',null) < AUTH_READ) continue;
            if (!page_exists($item['page'])) continue;
            $num_items = $num_items +1;
            $renderer->listitem_open(1);
            if (strpos($item['page'],':') === false) {
                $item['page'] = ':' . $item['page'];
            }
            $renderer->internallink($item['page']);
            if ($data[1]['score'] === 'true') $renderer->cdata(' (' . $item['val'] . ')');

            $renderer->listitem_close();
            if ($num_items >= 10) break;
        }

        if($data[1]['tag'] == 'ol') {
            $renderer->listo_close();
        } else {
            $renderer->listu_close();
        }
        return true;
    }

}