<?php
/**
 * DokuWiki Plugin rndtxt (Syntax Component)
 *
 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
 * @author  Andreas Gohr <andi@splitbrain.org>
 */

class syntax_plugin_rndtxt extends DokuWiki_Syntax_Plugin
{
    /** @inheritDoc */
    public function getType()
    {
        return 'substition';
    }

    /** @inheritDoc */
    public function getPType()
    {
        return 'normal';
    }

    /** @inheritDoc */
    public function getSort()
    {
        return 155;
    }

    /** @inheritDoc */
    public function connectTo($mode)
    {
        $this->Lexer->addSpecialPattern('{\?.*?\?}', $mode, 'plugin_rndtxt');
    }

    /** @inheritDoc */
    public function handle($match, $state, $pos, Doku_Handler $handler)
    {
        $match = substr($match, 2, -2);
        $data = explode('|', $match);
        $data = array_map('trim', $data);
        $data = array_unique($data);
        return $data;
    }

    /** @inheritDoc */
    public function render($mode, Doku_Renderer $renderer, $data)
    {
        if ($mode !== 'xhtml') {
            return false;
        }

        $renderer->nocache();

        $idx = array_rand($data);
        $renderer->cdata($data[$idx]);

        return true;
    }
}