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<?php |
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/** |
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* YouTube Live Embed plugin for Craft CMS 3.x |
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* |
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* This plugin allows you to embed a YouTube live stream and/or live chat on your webpage |
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* |
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* @link https://nystudio107.com |
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* @copyright Copyright (c) 2019 nystudio107 |
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*/ |
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namespace nystudio107\youtubeliveembed\services; |
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use nystudio107\youtubeliveembed\YoutubeLiveEmbed; |
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use nystudio107\youtubeliveembed\helpers\PluginTemplate; |
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use Craft; |
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use craft\base\Component; |
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use craft\helpers\UrlHelper; |
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/** @noinspection MissingPropertyAnnotationsInspection */ |
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/** |
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* @author nystudio107 |
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* @package YoutubeLiveEmbed |
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* @since 1.0.0 |
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*/ |
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class Embed extends Component |
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{ |
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// Constants |
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// ========================================================================= |
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const YOUTUBE_STREAM_URL = 'https://www.youtube.com/embed/live_stream'; |
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const YOUTUBE_CHAT_URL = 'https://www.youtube.com/live_chat'; |
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// Public Methods |
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// ========================================================================= |
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/** |
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* Renders the responsive iframe for the live stream video |
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* |
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* @param int $aspectRatioX |
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* @param int $aspectRatioY |
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* |
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* @return \Twig_Markup |
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*/ |
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public function embedStream(int $aspectRatioX = 16, int $aspectRatioY = 9): \Twig_Markup |
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{ |
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$html = PluginTemplate::renderPluginTemplate( |
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'embeds/youtube-live-stream.twig', |
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[ |
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'aspectRatio' => ($aspectRatioY / $aspectRatioX) * 100, |
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'iframeUrl' => $this->getYoutubeStreamUrl(), |
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] |
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); |
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return $html; |
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} |
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/** |
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* Renders the responsive Google AMP iframe for the live stream video |
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* |
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* @param int $aspectRatioX |
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* @param int $aspectRatioY |
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* |
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* @return \Twig_Markup |
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*/ |
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public function embedStreamAmp(int $aspectRatioX = 16, int $aspectRatioY = 9): \Twig_Markup |
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{ |
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$html = PluginTemplate::renderPluginTemplate( |
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'embeds/youtube-live-stream-amp.twig', |
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[ |
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'aspectRatio' => ($aspectRatioY / $aspectRatioX) * 100, |
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'iframeUrl' => $this->getYoutubeStreamUrl(), |
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] |
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); |
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return $html; |
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} |
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/** |
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* Renders the responsive iframe HTML for the live stream chat |
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* |
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* @param int $aspectRatioX |
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* @param int $aspectRatioY |
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* |
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* @return \Twig_Markup |
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*/ |
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public function embedChat(int $aspectRatioX = 16, int $aspectRatioY = 9): \Twig_Markup |
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{ |
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$html = PluginTemplate::renderPluginTemplate( |
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'embeds/youtube-live-chat.twig', |
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[ |
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'aspectRatio' => ($aspectRatioY / $aspectRatioX) * 100, |
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'iframeUrl' => $this->getYoutubeChatUrl(), |
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] |
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); |
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return $html; |
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} |
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/** |
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* Renders the responsive Google AMP iframe HTML for the live stream chat |
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* |
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* @param int $aspectRatioX |
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* @param int $aspectRatioY |
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* |
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* @return \Twig_Markup |
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*/ |
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public function embedChatAmp(int $aspectRatioX = 16, int $aspectRatioY = 9): \Twig_Markup |
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{ |
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$html = PluginTemplate::renderPluginTemplate( |
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'embeds/youtube-live-chat-amp.twig', |
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[ |
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'aspectRatio' => ($aspectRatioY / $aspectRatioX) * 100, |
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'iframeUrl' => $this->getYoutubeChatUrl(), |
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] |
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); |
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return $html; |
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} |
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/** |
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* Sets the YouTube Channel ID to $channelId |
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* |
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* @param string $channelId |
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*/ |
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public function setChannelId(string $channelId) |
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{ |
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YoutubeLiveEmbed::$youtubeChannelId = $channelId; |
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} |
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/** |
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* Returns whether the stream is currently live |
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* |
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* @return bool |
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*/ |
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public function isLive(): bool |
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{ |
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$videoId = $this->getVideoIdFromLiveStream(); |
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if ($videoId) { |
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return true; |
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} |
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return false; |
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} |
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// Protected Methods |
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// ========================================================================= |
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/** |
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* Returns the URL to the live video YouTube page |
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* |
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* @return string |
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*/ |
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protected function getYoutubeStreamUrl(): string |
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{ |
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$url = UrlHelper::urlWithParams(self::YOUTUBE_STREAM_URL, [ |
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'channel' => YoutubeLiveEmbed::$youtubeChannelId, |
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]); |
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return $url; |
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} |
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/** |
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* Returns the URL to the live chat YouTube page |
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* |
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* @return string |
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*/ |
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protected function getYoutubeChatUrl(): string |
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{ |
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$url = ''; |
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$videoId = $this->getVideoIdFromLiveStream(); |
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if ($videoId) { |
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$site = Craft::$app->getSites()->currentSite; |
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$domain = parse_url($site->baseUrl, PHP_URL_HOST); |
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$url = UrlHelper::urlWithParams(self::YOUTUBE_CHAT_URL, [ |
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'v' => $this->getVideoIdFromLiveStream(), |
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'embed_domain' => $domain |
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]); |
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} |
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return $url; |
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} |
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/** |
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* Extracts the Video ID of the current live stream video |
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* |
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* @return null|string |
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*/ |
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protected function getVideoIdFromLiveStream() |
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{ |
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$videoId = null; |
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$liveUrl = $this->getYoutubeStreamUrl(); |
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// Fetch the livestream page |
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if ($data = @file_get_contents($liveUrl)) { |
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// Find the video ID in there |
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if (preg_match('/\'VIDEO_ID\': \"(.*?)\"/', $data, $matches)) { |
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$videoId = $matches[1]; |
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} |
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} |
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return $videoId; |
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} |
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} |
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nystudio107 /
craft-youtubeliveembed
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