MediaWiki-Github-Issues/issues.php at master · aaronpk/MediaWiki-Github-Issues · GitHub

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<?php
require_once(dirname(__FILE__).'/php-markdown/Michelf/MarkdownExtra.inc.php');
use \Michelf\MarkdownExtra;

$wgExtensionFunctions[] = "wikiGithubIssues";
$wgExtensionCredits['parserhook'][] = array(
        'name' => 'Github Issues',
        'author' => 'Aaron Parecki',
        'description' => 'Adds <nowiki><githubissues src=""></nowiki> tag to embed github issues in the wiki',
        'url' => 'https://github.com/aaronpk/MediaWiki-Github-Issues'
);

function wikiGithubIssues() {
    global $wgParser;
    $wgParser->setHook("githubissues", "embedGithubIssues");
}

function embedGithubIssues($input, $args) {
	global $wgParser;

	$wgParser->disableCache();

	ob_start();

	if(!array_key_exists('src', $args)) {
		echo 'Error! Usage: <githubissues src="https://github.com/aaronpk/p3k/issues?labels=priority%3Aitching">';
	} else {

		if(preg_match('/https:\/\/github.com\/([^\/]+)\/([^\/]+)\/issues(\?.+)?/', $args['src'], $match)) {
			$username = $match[1];
			$repo = $match[2];
			$query = $match[3];

			$cacheHours = 2;
			if(array_key_exists('cache', $args)) {
				$cacheHours = $args['cache'];
			}

			$cacheFile = dirname(__FILE__).'/cache/'.md5(implode($args)) . '.html';
			if(file_exists($cacheFile) && filemtime($cacheFile) >= (time() - (60*60*$cacheHours))) {
				echo file_get_contents($cacheFile);
			} else {
				$ch = curl_init();
				curl_setopt($ch, CURLOPT_URL, 'https://api.github.com/repos/'.$username.'/'.$repo.'/issues'.$query);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
				curl_setopt($ch, CURLOPT_USERAGENT, 'MediaWiki Github Issues Extension');
				$response = curl_exec($ch);
				if($response) {
					$issues = json_decode($response);

					if($issues) {
						$headerTag = 'h3';
						if(array_key_exists('header', $args)) {
							$headerTag = $args['header'];
						}

						$html = '';
						foreach($issues as $issue) {
							$html .= '<'.$headerTag.'><a href="' . $issue->html_url . '">' . $issue->title . '</a></'.$headerTag.'>';
							$body = MarkdownExtra::defaultTransform($issue->body);
							$html .= '<p>' . $body . '</p>';
							if($issue->comments) {
								$html .= '<p><a href="' . $issue->html_url . '">';
								$html .= $issue->comments . ' comment' . ($issue->comments == 1 ? '' : 's');
								$html .= '</a></p>';
							}
						}

						file_put_contents($cacheFile, $html);
						echo $html;
					} else {
						echo '<p>Error retrieving content from GitHub. Malformed JSON was returned from the API.</p>';
						echo '<p>URL is: <a href="' . $args['src'] . '">' . $args['src'] . '</a></p>';
					}
				} else {
					echo 'Error retrieving content from GitHub';
					echo '<p>URL is: <a href="' . $args['src'] . '">' . $args['src'] . '</a></p>';
				}
			}

		} else {
			echo 'Error! src must be a URL like the following: https://github.com/aaronpk/p3k/issues?labels=priority%3Aitching';
		}

	}

	return array(ob_get_clean(), 'noparse' => true, 'isHTML' => true);
}