✨ Add support for WordPress.tv thumbnails

#204

inc/thumbnail/class-thumbnail.php

@@ -4,6 +4,7 @@
 use epiphyt\Embed_Privacy\thumbnail\provider\SlideShare;
 use epiphyt\Embed_Privacy\thumbnail\provider\Thumbnail_Provider;
 use epiphyt\Embed_Privacy\thumbnail\provider\Vimeo;
+use epiphyt\Embed_Privacy\thumbnail\provider\WordPress_TV;
 use epiphyt\Embed_Privacy\thumbnail\provider\YouTube;
 use WP_Post;
 
@@ -23,6 +24,7 @@ final class Thumbnail {
 	public $providers = [
 		SlideShare::class,
 		Vimeo::class,
+		WordPress_TV::class,
 		YouTube::class,
 	];
 

inc/thumbnail/provider/class-wordpress-tv.php

@@ -0,0 +1,140 @@
+<?php
+namespace epiphyt\Embed_Privacy\thumbnail\provider;
+
+use DOMDocument;
+use DOMXPath;
+use epiphyt\Embed_Privacy\thumbnail\Thumbnail;
+
+/**
+ * WordPress TV thumbnail implementation.
+ * 
+ * @author	Epiphyt
+ * @license	GPL2
+ * @package	epiphyt\Embed_Privacy
+ */
+final class WordPress_TV extends Thumbnail_Provider implements Thumbnail_Provider_Interface {
+	/**
+	 * @inheritDoc
+	 */
+	public static $domains = [
+		'wordpress.tv',
+	];
+
+	/**
+	 * @inheritDoc
+	 */
+	public static $name = 'wordpress-tv';
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function get( $data, $url ) {
+		if ( ! self::is_provider_embed( $url ) ) {
+			return;
+		}
+
+		$id = self::get_id( $data->html );
+
+		if ( $id ) {
+			self::save( $id, $url );
+		}
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function get_id( $content ) {
+		if ( \str_contains( $content, '/video.wordpress.com/embed/' ) ) {
+			$extracted = \preg_replace( '/.*video\.wordpress\.com\/embed\//', '', $content ); // phpcs:ignore WordPress.WP.CapitalPDangit.MisspelledInText
+			$parts = \explode( '?', $extracted );
+			$id = isset( $parts[0] ) ? $parts[0] : '';
+		}
+		else {
+			// get ID from meta key by embed URL
+			$metadata = Thumbnail::get_metadata( self::$name );
+
+			foreach ( $metadata as $meta ) {
+				if ( ! \str_contains( $meta['meta_value'], $content ) ) {
+					continue;
+				}
+
+				$id = \str_replace(
+					[
+						Thumbnail::METADATA_PREFIX . '_' . self::$name . '_',
+						'_url',
+					],
+					'',
+					$meta['meta_key']
+				);
+			}
+		}
+
+		return $id;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function get_title() {
+		return \_x( 'WordPress TV', 'embed provider', 'embed-privacy' );
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function save( $id, $url, $thumbnail_url = '' ) {
+		$post = \get_post();
+
+		if ( ! $post ) {
+			return;
+		}
+
+		require_once ABSPATH . 'wp-admin/includes/file.php';
+
+		$directory = Thumbnail::get_directory();
+		$thumbnail_path = $directory['base_dir'] . '/' . self::$name . '-' . $id . '.jpg';
+
+		if ( ! \file_exists( $thumbnail_path ) ) {
+			$use_errors = \libxml_use_internal_errors( true );
+			$dom = new DOMDocument();
+			// download embedded page
+			$request = \wp_remote_get( $url );
+
+			$dom->loadHTML(
+				\wp_remote_retrieve_body( $request ),
+				LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD
+			);
+			$xpath = new DOMXPath( $dom );
+			// get thumbnail URL from og:image meta
+			$thumbnail_url = $xpath->evaluate( '//meta[@property="og:image"]/@content' )->item( 0 )->value;
+			$file = \download_url( $thumbnail_url );
+
+			\libxml_use_internal_errors( $use_errors );
+
+			if ( \is_wp_error( $file ) ) {
+				return;
+			}
+
+			/** @var \WP_Filesystem_Direct $wp_filesystem */
+			global $wp_filesystem;
+
+			// initialize the WP filesystem if not exists
+			if ( empty( $wp_filesystem ) ) {
+				\WP_Filesystem();
+			}
+
+			$wp_filesystem->move( $file, $thumbnail_path );
+		}
+
+		\update_post_meta(
+			$post->ID,
+			Thumbnail::METADATA_PREFIX . '_' . self::$name . '_' . $id,
+			self::$name . '-' . $id . '.jpg'
+		);
+		\update_post_meta(
+			$post->ID,
+			Thumbnail::METADATA_PREFIX . '_' . self::$name . '_' . $id . '_url',
+			$url
+		);
+	}
+}