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[friendica-addons.git] / markdown / markdown.php
1 <?php
2 /**
3  * Name: Markdown
4  * Description: Parse Markdown code when creating new items
5  * Version: 0.1
6  * Author: Michael Vogel <https://pirati.ca/profile/heluecht>
7  */
8 use Friendica\App;
9 use Friendica\Core\Hook;
10 use Friendica\Content\Text\Markdown;
11 use Friendica\Core\Renderer;
12 use Friendica\DI;
13
14 function markdown_install() {
15         Hook::register('post_local_start',      __FILE__, 'markdown_post_local_start');
16         Hook::register('addon_settings',        __FILE__, 'markdown_addon_settings');
17         Hook::register('addon_settings_post',   __FILE__, 'markdown_addon_settings_post');
18 }
19
20 function markdown_addon_settings(App $a, &$s)
21 {
22         if (!local_user()) {
23                 return;
24         }
25
26         $enabled = intval(DI::pConfig()->get(local_user(), 'markdown', 'enabled'));
27
28         $t = Renderer::getMarkupTemplate('settings.tpl', 'addon/markdown/');
29         $s .= Renderer::replaceMacros($t, [
30                 '$title'   => DI::l10n()->t('Markdown'),
31                 '$enabled' => ['enabled', DI::l10n()->t('Enable Markdown parsing'), $enabled, DI::l10n()->t('If enabled, self created items will additionally be parsed via Markdown.')],
32                 '$submit'  => DI::l10n()->t('Save Settings'),
33         ]);
34 }
35
36 function markdown_addon_settings_post(App $a, &$b)
37 {
38         if (!local_user() || empty($_POST['markdown-submit'])) {
39                 return;
40         }
41
42         DI::pConfig()->set(local_user(), 'markdown', 'enabled', intval($_POST['enabled']));
43 }
44
45 function markdown_post_local_start(App $a, &$request) {
46         if (empty($request['body']) || !DI::pConfig()->get(local_user(), 'markdown', 'enabled')) {
47                 return;
48         }
49
50         // Escape elements that shouldn't be parsed
51         $request['body'] = \Friendica\Content\Text\BBCode::performWithEscapedTags(
52                 $request['body'],
53                 ['code', 'noparse', 'nobb', 'pre', 'share', 'url', 'img', 'bookmark',
54                         'audio', 'video', 'youtube', 'vimeo', 'attachment', 'iframe', 'map', 'mail'],
55                 function ($body) {
56                         // Escape mentions which username can contain Markdown-like characters
57                         // See https://github.com/friendica/friendica/issues/9486
58                         return \Friendica\Util\Strings::performWithEscapedBlocks($body, '/[@!][^@\s]+@[^\s]+\w/', function ($text) {
59                                 return Markdown::toBBCode($text);
60                         });
61                 }
62         );
63 }