352 lines
10 KiB
PHP
Executable File
352 lines
10 KiB
PHP
Executable File
<?php
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/**
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* Manages compatibility with the amp-wp plugin
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*
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* @see https://github.com/Automattic/amp-wp
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*/
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class Jetpack_AMP_Support {
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static function init() {
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if ( ! self::is_amp_request() ) {
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return;
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}
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// enable stats
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if ( Jetpack::is_module_active( 'stats' ) ) {
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add_action( 'amp_post_template_footer', array( 'Jetpack_AMP_Support', 'add_stats_pixel' ) );
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}
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// carousel
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add_filter( 'jp_carousel_maybe_disable', '__return_true' );
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// sharing
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add_filter( 'sharing_enqueue_scripts', '__return_false' );
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add_filter( 'jetpack_sharing_counts', '__return_false' );
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add_filter( 'sharing_js', '__return_false' );
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add_filter( 'jetpack_sharing_display_markup', array( 'Jetpack_AMP_Support', 'render_sharing_html' ), 10, 2 );
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// disable lazy images
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add_filter( 'lazyload_is_enabled', '__return_false' );
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// disable imploding CSS
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add_filter( 'jetpack_implode_frontend_css', '__return_false' );
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// enforce freedom mode for videopress
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add_filter( 'videopress_shortcode_options', array( 'Jetpack_AMP_Support', 'videopress_enable_freedom_mode' ) );
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// include Jetpack og tags when rendering native AMP head
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add_action( 'amp_post_template_head', array( 'Jetpack_AMP_Support', 'amp_post_jetpack_og_tags' ) );
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// Post rendering changes for legacy AMP
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add_action( 'pre_amp_render_post', array( 'Jetpack_AMP_Support', 'amp_disable_the_content_filters' ) );
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// Add post template metadata for legacy AMP
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add_filter( 'amp_post_template_metadata', array( 'Jetpack_AMP_Support', 'amp_post_template_metadata' ), 10, 2 );
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}
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static function admin_init() {
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// disable Likes metabox for post editor if AMP canonical disabled
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add_filter( 'post_flair_disable', array( 'Jetpack_AMP_Support', 'is_amp_canonical' ), 99 );
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}
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static function init_filter_jetpack_widgets() {
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if ( ! self::is_amp_request() ) {
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return;
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}
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// widgets
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add_filter( 'jetpack_widgets_to_include', array( 'Jetpack_AMP_Support', 'filter_available_widgets' ) );
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}
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static function is_amp_canonical() {
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return function_exists( 'amp_is_canonical' ) && amp_is_canonical();
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}
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static function is_amp_request() {
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// can't use is_amp_endpoint() since it's not ready early enough in init.
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// is_amp_endpoint() implementation calls is_feed, which bails with a notice if plugins_loaded isn't finished
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// "Conditional query tags do not work before the query is run"
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$is_amp_request =
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defined( 'AMP__VERSION' )
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&&
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! is_admin() // this is necessary so that modules can still be enabled/disabled/configured as per normal via Jetpack admin
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&&
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function_exists( 'amp_is_canonical' ) // this is really just testing if the plugin exists
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&&
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(
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amp_is_canonical()
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isset( $_GET[ amp_get_slug() ] )
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( version_compare( AMP__VERSION, '1.0', '<' ) && self::has_amp_suffix() ) // after AMP 1.0, the amp suffix will no longer be supported
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);
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/**
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* Returns true if the current request should return valid AMP content.
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*
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* @since 6.2.0
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*
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* @param boolean $is_amp_request Is this request supposed to return valid AMP content?
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*/
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return apply_filters( 'jetpack_is_amp_request', $is_amp_request );
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}
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static function has_amp_suffix() {
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$request_path = wp_parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH );
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return $request_path && preg_match( '#/amp/?$#i', $request_path );
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}
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static function filter_available_widgets( $widgets ) {
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if ( self::is_amp_request() ) {
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$widgets = array_filter( $widgets, array( 'Jetpack_AMP_Support', 'is_supported_widget' ) );
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}
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return $widgets;
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}
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static function is_supported_widget( $widget_path ) {
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return substr( $widget_path, -14 ) !== '/milestone.php';
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}
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static function amp_disable_the_content_filters() {
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if ( defined( 'WPCOM') && WPCOM ) {
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add_filter( 'videopress_show_2015_player', '__return_true' );
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add_filter( 'protected_embeds_use_form_post', '__return_false' );
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remove_filter( 'the_title', 'widont' );
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}
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remove_filter( 'pre_kses', array( 'Filter_Embedded_HTML_Objects', 'filter' ), 11 );
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remove_filter( 'pre_kses', array( 'Filter_Embedded_HTML_Objects', 'maybe_create_links' ), 100 );
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}
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/**
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* Add Jetpack stats pixel.
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*
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* @since 6.2.1
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*/
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static function add_stats_pixel() {
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if ( ! has_action( 'wp_footer', 'stats_footer' ) ) {
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return;
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}
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stats_render_amp_footer( stats_build_view_data() );
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}
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/**
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* Add publisher and image metadata to legacy AMP post.
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*
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* @since 6.2.0
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*
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* @param array $metadata Metadata array.
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* @param WP_Post $post Post.
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* @return array Modified metadata array.
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*/
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static function amp_post_template_metadata( $metadata, $post ) {
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if ( isset( $metadata['publisher'] ) && ! isset( $metadata['publisher']['logo'] ) ) {
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$metadata = self::add_site_icon_to_metadata( $metadata );
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}
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if ( ! isset( $metadata['image'] ) ) {
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$metadata = self::add_image_to_metadata( $metadata, $post );
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}
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return $metadata;
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}
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/**
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* Add blavatar to legacy AMP post metadata.
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*
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* @since 6.2.0
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*
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* @param array $metadata Metadata.
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* @return array Metadata.
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*/
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static function add_site_icon_to_metadata( $metadata ) {
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$size = 60;
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if ( function_exists( 'blavatar_domain' ) ) {
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$metadata['publisher']['logo'] = array(
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'@type' => 'ImageObject',
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'url' => blavatar_url( blavatar_domain( site_url() ), 'img', $size, self::staticize_subdomain( 'https://wordpress.com/i/favicons/apple-touch-icon-60x60.png' ) ),
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'width' => $size,
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'height' => $size,
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);
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} else if ( $site_icon_url = Jetpack_Sync_Functions::site_icon_url( $size ) ) {
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$metadata['publisher']['logo'] = array(
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'@type' => 'ImageObject',
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'url' => $site_icon_url,
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'width' => $size,
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'height' => $size,
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);
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}
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return $metadata;
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}
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/**
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* Add image to legacy AMP post metadata.
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*
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* @since 6.2.0
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*
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* @param array $metadata Metadata.
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* @param WP_Post $post Post.
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* @return array Metadata.
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*/
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static function add_image_to_metadata( $metadata, $post ) {
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$image = Jetpack_PostImages::get_image( $post->ID, array(
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'fallback_to_avatars' => true,
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'avatar_size' => 200,
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// AMP already attempts these.
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'from_thumbnail' => false,
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'from_attachment' => false,
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) );
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if ( empty( $image ) ) {
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return self::add_fallback_image_to_metadata( $metadata );
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}
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if ( ! isset( $image['src_width'] ) ) {
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$dimensions = self::extract_image_dimensions_from_getimagesize( array(
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$image['src'] => false,
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) );
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if ( false !== $dimensions[ $image['src'] ] ) {
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$image['src_width'] = $dimensions['width'];
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$image['src_height'] = $dimensions['height'];
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}
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}
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$metadata['image'] = array(
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'@type' => 'ImageObject',
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'url' => $image['src'],
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'width' => $image['src_width'],
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'height' => $image['src_height'],
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);
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return $metadata;
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}
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/**
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* Add fallback image to legacy AMP post metadata.
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*
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* @since 6.2.0
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*
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* @param array $metadata Metadata.
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* @return array Metadata.
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*/
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static function add_fallback_image_to_metadata( $metadata ) {
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/** This filter is documented in functions.opengraph.php */
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$default_image = apply_filters( 'jetpack_open_graph_image_default', 'https://wordpress.com/i/blank.jpg' );
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$metadata['image'] = array(
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'@type' => 'ImageObject',
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'url' => self::staticize_subdomain( $default_image ),
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'width' => 200,
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'height' => 200,
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);
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return $metadata;
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}
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static function staticize_subdomain( $domain ) {
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// deal with WPCOM vs Jetpack
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if ( function_exists( 'staticize_subdomain' ) ) {
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return staticize_subdomain( $domain );
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} else {
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return Jetpack::staticize_subdomain( $domain );
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}
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}
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/**
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* Extract image dimensions via wpcom/imagesize, only on WPCOM
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*
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* @since 6.2.0
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*
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* @param array $dimensions Dimensions.
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* @return array Dimensions.
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*/
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static function extract_image_dimensions_from_getimagesize( $dimensions ) {
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if ( ! ( defined('WPCOM') && WPCOM && function_exists( 'require_lib' ) ) ) {
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return $dimensions;
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}
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require_lib( 'wpcom/imagesize' );
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foreach ( $dimensions as $url => $value ) {
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if ( is_array( $value ) ) {
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continue;
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}
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$result = wpcom_getimagesize( $url );
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if ( is_array( $result ) ) {
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$dimensions[ $url ] = array(
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'width' => $result[0],
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'height' => $result[1],
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);
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}
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}
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return $dimensions;
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}
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static function amp_post_jetpack_og_tags() {
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Jetpack::init()->check_open_graph();
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if ( function_exists( 'jetpack_og_tags' ) ) {
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jetpack_og_tags();
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}
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}
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static function videopress_enable_freedom_mode( $options ) {
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$options['freedom'] = true;
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return $options;
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}
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static function render_sharing_html( $markup, $sharing_enabled ) {
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remove_action( 'wp_footer', 'sharing_add_footer' );
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if ( empty( $sharing_enabled ) ) {
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return $markup;
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}
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$supported_services = array(
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'facebook' => array(
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/** This filter is documented in modules/sharedaddy/sharing-sources.php */
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'data-param-app_id' => apply_filters( 'jetpack_sharing_facebook_app_id', '249643311490' ),
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),
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'twitter' => array(),
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'pinterest' => array(),
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'whatsapp' => array(),
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'google-plus-1' => array(
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'type' => 'gplus',
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),
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'tumblr' => array(),
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'linkedin' => array(),
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);
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$sharing_links = array();
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foreach ( $sharing_enabled['visible'] as $id => $service ) {
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if ( ! isset( $supported_services[ $id ] ) ) {
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$sharing_links[] = "<!-- not supported: $id -->";
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continue;
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}
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$args = array_merge(
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array(
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'type' => $id,
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),
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$supported_services[ $id ]
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);
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$sharing_link = '<amp-social-share';
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foreach ( $args as $key => $value ) {
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$sharing_link .= sprintf( ' %s="%s"', sanitize_key( $key ), esc_attr( $value ) );
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}
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$sharing_link .= '></amp-social-share>';
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$sharing_links[] = $sharing_link;
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}
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return preg_replace( '#(?<=<div class="sd-content">).+?(?=</div>)#s', implode( '', $sharing_links ), $markup );
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}
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}
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add_action( 'init', array( 'Jetpack_AMP_Support', 'init' ), 1 );
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add_action( 'admin_init', array( 'Jetpack_AMP_Support', 'admin_init' ), 1 );
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// this is necessary since for better or worse Jetpack modules and widget files are loaded during plugins_loaded, which means we must
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// take the opportunity to intercept initialisation before that point, either by adding explicit detection into the module,
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// or preventing it from loading in the first place (better for performance)
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add_action( 'plugins_loaded', array( 'Jetpack_AMP_Support', 'init_filter_jetpack_widgets' ), 1 );
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