MarkdownviewerController.php

<?php
namespace Plugins\markdownviewer;

use Psr\Http\Message\ServerRequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use Typemill\Models\Navigation;
use Typemill\Models\Content;
use Typemill\Models\StorageWrapper;
use Typemill\Controllers\Controller;

class MarkdownviewerController extends Controller
{
    public function index(Request $request, Response $response, $args)
    {
        $url = isset($args['path']) ? '/' . $args['path'] : '/';
        
        $urlinfo = $this->c->get('urlinfo');
        $langattr = $this->settings['langattr'];
        
        // Also strip .md from urlinfo paths
        $urlinfo['currentpath'] = substr($urlinfo['currentpath'], 0, -3);
        $urlinfo['route'] = substr($urlinfo['route'], 0, -3);
        $urlinfo['currenturl'] = substr($urlinfo['currenturl'], 0, -3);
		
        // Use Navigation to find the page
        $navigation = new Navigation();
        $draftNavigation = $navigation->getFullDraftNavigation($urlinfo, $langattr);
        $pageinfo = $navigation->getPageInfoForUrl($url, $urlinfo, $langattr);
        
        if (!$pageinfo) {
            $response->getBody()->write('Page not found');
            return $response->withStatus(404);
        }
        
        $keyPathArray = explode(".", $pageinfo['keyPath']);
        $item = $navigation->getItemWithKeyPath($draftNavigation, $keyPathArray);
        
        if (!$item) {
            $response->getBody()->write('Item not found');
            return $response->withStatus(404);
        }
        
        // Use Content to get the markdown
        $content = new Content($urlinfo['baseurl'], $this->settings, $this->c->get('dispatcher'));
        $liveMarkdown = $content->getLiveMarkdown($item);
        
        $response->getBody()->write($liveMarkdown);
        
        return $response
            ->withHeader('Content-Type', 'text/markdown; charset=utf-8')
            ->withHeader('Content-Disposition', 'inline')
            ->withStatus(200);
    }
}