130 lines
3.9 KiB
PHP
130 lines
3.9 KiB
PHP
<?php
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/**
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* YouTube
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*
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* This plugin embeds YouTube video from markdown URLs
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*
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* Licensed under MIT, see LICENSE.
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*/
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namespace Grav\Plugin;
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use Grav\Common\Data\Data;
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use Grav\Common\Plugin;
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use Grav\Common\Page\Page;
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use Grav\Common\Twig\Twig;
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use Grav\Plugin\Youtube\Twig\YoutubeTwigExtension;
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use RocketTheme\Toolbox\Event\Event;
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class YoutubePlugin extends Plugin
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{
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const YOUTUBE_REGEX = '(?:https?:\/{2}(?:(?:www.youtube(?:-nocookie)?\.com\/(?:[^\/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|\S*?[?&]v=))|(?:youtu\.be\/)))([a-zA-Z0-9_-]{11})';
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/**
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* Return a list of subscribed events.
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*
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* @return array The list of events of the plugin of the form
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* 'name' => ['method_name', priority].
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*/
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public static function getSubscribedEvents()
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{
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return [
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'onPluginsInitialized' => ['onPluginsInitialized', 0],
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];
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}
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/**
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* Initialize configuration.
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*/
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public function onPluginsInitialized()
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{
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if ($this->isAdmin()) {
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$this->enable([
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'onTwigSiteVariables' => ['onTwigSiteVariables', 0],
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]);
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return;
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}
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$this->enable([
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'onPageContentRaw' => ['onPageContentRaw', 0],
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'onTwigExtensions' => ['onTwigExtensions', 0],
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'onTwigSiteVariables' => ['onTwigSiteVariables', 0],
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'onTwigTemplatePaths' => ['onTwigTemplatePaths', 0],
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]);
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}
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/**
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* Add content after page content was read into the system.
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*
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* @param Event $event An event object, when `onPageContentRaw` is fired.
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*/
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public function onPageContentRaw(Event $event)
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{
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/** @var Page $page */
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$page = $event['page'];
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/** @var Twig $twig */
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$twig = $this->grav['twig'];
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/** @var Data $config */
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$config = $this->mergeConfig($page, TRUE);
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if ($config->get('enabled')) {
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// Get raw content and substitute all formulas by a unique token
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$raw = $page->getRawContent();
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// build an anonymous function to pass to `parseLinks()`
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$function = function ($matches) use ($twig, $config) {
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$search = $matches[0];
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// double check to make sure we found a valid YouTube video ID
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if (!isset($matches[1])) {
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return $search;
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}
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// build the replacement embed HTML string
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$replace = $twig->processTemplate('partials/youtube.html.twig', array(
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'player_parameters' => $config->get('player_parameters'),
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'privacy_enhanced_mode' => $config->get('privacy_enhanced_mode'),
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'video_id' => $matches[1],
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));
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// do the replacement
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return str_replace($search, $replace, $search);
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};
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// set the parsed content back into as raw content
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$page->setRawContent($this->parseLinks($raw, $function, $this::YOUTUBE_REGEX));
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}
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}
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/**
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* Add Twig Extensions.
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*/
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public function onTwigExtensions()
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{
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require_once __DIR__ . '/classes/Twig/YoutubeTwigExtension.php';
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$this->grav['twig']->twig->addExtension(new YoutubeTwigExtension());
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}
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/**
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* Set needed variables to display breadcrumbs.
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*/
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public function onTwigSiteVariables()
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{
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if (!$this->isAdmin() && $this->config->get('plugins.youtube.built_in_css')) {
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$this->grav['assets']->add('plugin://youtube/css/youtube.css');
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}
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if ($this->isAdmin() && $this->config->get('plugins.youtube.add_editor_button')) {
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$this->grav['assets']->add('plugin://youtube/admin/editor-button/js/button.js');
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}
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}
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/**
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* Add current directory to twig lookup paths.
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*/
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public function onTwigTemplatePaths()
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{
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$this->grav['twig']->twig_paths[] = __DIR__ . '/templates';
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}
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}
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