<?php

namespace Core;

use Parsedown;

/**
 * Specific Markdown rules for Kanboard
 *
 * @package core
 * @author  norcnorc
 * @author  Frederic Guillot
 */
class Markdown extends Parsedown
{
    private $link;
    private $helper;
    
    public function __construct($link, Helper $helper) 
    {
        $this->link = $link;
        $this->helper = $helper;
        $this->InlineTypes['#'][] = 'TaskLink';
        $this->inlineMarkerList .= '#';
    }

    protected function inlineTaskLink($Excerpt)
    {
        // Replace task #123 by a link to the task
        if (! empty($this->link) && preg_match('!#(\d+)!i', $Excerpt['text'], $matches)) {

            $url = $this->helper->u($this->link['controller'],
                                    $this->link['action'],
                                    $this->link['params'] + array('task_id' => $matches[1]));
            return array(
                'extent' => strlen($matches[0]),
                'element' => array(
                    'name' => 'a',
                    'text' => $matches[0],
                    'attributes' => array('href' => $url)));
        }
    }
}