dd29775ae4
This will prevent the issue of attaching images that don't were uploaded to the post but not used in the post The post needs to be using blocks to get the introspection required.
530 lines
13 KiB
PHP
530 lines
13 KiB
PHP
<?php
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namespace Activitypub\Transformer;
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use WP_Post;
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use Activitypub\Collection\Users;
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use Activitypub\Model\Blog_User;
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use Activitypub\Activity\Base_Object;
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use function Activitypub\esc_hashtag;
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use function Activitypub\is_single_user;
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use function Activitypub\get_rest_url_by_path;
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use function Activitypub\site_supports_blocks;
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/**
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* WordPress Post Transformer
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*
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* The Post Transformer is responsible for transforming a WP_Post object into different othe
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* Object-Types.
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*
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* Currently supported are:
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*
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* - Activitypub\Activity\Base_Object
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*/
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class Post {
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/**
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* The WP_Post object.
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*
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* @var WP_Post
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*/
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protected $wp_post;
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/**
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* The Allowed Tags, used in the content.
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*
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* @var array
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*/
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protected $allowed_tags = array(
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'a' => array(
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'href' => array(),
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'title' => array(),
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'class' => array(),
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'rel' => array(),
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),
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'br' => array(),
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'p' => array(
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'class' => array(),
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),
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'span' => array(
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'class' => array(),
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),
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'div' => array(
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'class' => array(),
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),
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'ul' => array(),
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'ol' => array(
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'reversed' => array(),
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'start' => array(),
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),
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'li' => array(
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'value' => array(),
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),
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'strong' => array(
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'class' => array(),
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),
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'b' => array(
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'class' => array(),
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),
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'i' => array(
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'class' => array(),
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),
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'em' => array(
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'class' => array(),
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),
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'blockquote' => array(),
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'cite' => array(),
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'code' => array(
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'class' => array(),
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),
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'pre' => array(
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'class' => array(),
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),
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);
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/**
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* Static function to Transform a WP_Post Object.
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*
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* This helps to chain the output of the Transformer.
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*
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* @param WP_Post $wp_post The WP_Post object
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*
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* @return void
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*/
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public static function transform( WP_Post $wp_post ) {
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return new static( $wp_post );
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}
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/**
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*
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*
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* @param WP_Post $wp_post
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*/
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public function __construct( WP_Post $wp_post ) {
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$this->wp_post = $wp_post;
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}
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/**
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* Transforms the WP_Post object to an ActivityPub Object
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*
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* @see \Activitypub\Activity\Base_Object
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*
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* @return \Activitypub\Activity\Base_Object The ActivityPub Object
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*/
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public function to_object() {
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$wp_post = $this->wp_post;
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$object = new Base_Object();
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$object->set_id( \esc_url( \get_permalink( $wp_post->ID ) ) );
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$object->set_url( \esc_url( \get_permalink( $wp_post->ID ) ) );
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$object->set_type( $this->get_object_type() );
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$published = \strtotime( $wp_post->post_date_gmt );
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$object->set_published( \gmdate( 'Y-m-d\TH:i:s\Z', $published ) );
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$updated = \strtotime( $wp_post->post_modified_gmt );
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if ( $updated > $published ) {
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$object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', $updated ) );
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}
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$object->set_attributed_to( $this->get_attributed_to() );
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$object->set_content( $this->get_content() );
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$object->set_content_map(
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array(
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\strstr( \get_locale(), '_', true ) => $this->get_content(),
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)
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);
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$path = sprintf( 'users/%d/followers', intval( $wp_post->post_author ) );
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$object->set_to(
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array(
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'https://www.w3.org/ns/activitystreams#Public',
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get_rest_url_by_path( $path ),
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)
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);
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$object->set_cc( $this->get_cc() );
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$object->set_attachment( $this->get_attachments() );
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$object->set_tag( $this->get_tags() );
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return $object;
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}
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/**
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* Returns the User-URL of the Author of the Post.
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*
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* If `single_user` mode is enabled, the URL of the Blog-User is returned.
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*
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* @return string The User-URL.
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*/
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protected function get_attributed_to() {
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if ( is_single_user() ) {
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$user = new Blog_User();
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return $user->get_url();
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}
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return Users::get_by_id( $this->wp_post->post_author )->get_url();
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}
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/**
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* Returns the Image Attachments for this Post, parsed from blocks.
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* @param int $max_images The maximum number of images to return.
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* @param array $image_ids The image IDs to append new IDs to.
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*
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* @return array The image IDs.
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*/
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protected function get_block_image_ids( $max_images, $image_ids = [] ) {
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$blocks = \parse_blocks( $this->wp_post->post_content );
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return self::get_image_ids_from_blocks( $blocks, $image_ids, $max_images );
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}
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/**
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* Recursively get image IDs from blocks.
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* @param array $blocks The blocks to search for image IDs
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* @param array $image_ids The image IDs to append new IDs to
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* @param int $max_images The maximum number of images to return.
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*
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* @return array The image IDs.
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*/
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protected static function get_image_ids_from_blocks( $blocks, $image_ids, $max_images ) {
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foreach ( $blocks as $block ) {
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// recurse into inner blocks
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if ( ! empty( $block['innerBlocks'] ) ) {
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$image_ids = self::get_image_ids_from_blocks( $block['innerBlocks'], $image_ids, $max_images );
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}
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switch ( $block['blockName'] ) {
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case 'core/image':
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case 'core/cover':
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if ( ! empty( $block['attrs']['id'] ) ) {
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$image_ids[] = $block['attrs']['id'];
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}
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break;
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case 'jetpack/slideshow':
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case 'jetpack/tiled-gallery':
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if ( ! empty( $block['attrs']['ids'] ) ) {
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$image_ids = array_merge( $image_ids, $block['attrs']['ids'] );
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}
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break;
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case 'jetpack/image-compare':
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if ( ! empty( $block['attrs']['beforeImageId'] ) ) {
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$image_ids[] = $block['attrs']['beforeImageId'];
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}
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if ( ! empty( $block['attrs']['afterImageId'] ) ) {
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$image_ids[] = $block['attrs']['afterImageId'];
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}
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break;
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}
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// we could be at or over max, stop unneeded work
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if ( count( $image_ids ) >= $max_images ) {
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break;
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}
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}
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// still need to slice it because one gallery could knock us over the limit
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return \array_slice( $image_ids, 0, $max_images );
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}
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/**
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* Generates all Image Attachments for a Post.
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*
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* @return array The Image Attachments.
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*/
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protected function get_attachments() {
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$max_images = intval( \apply_filters( 'activitypub_max_image_attachments', \get_option( 'activitypub_max_image_attachments', ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS ) ) );
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$images = array();
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// max images can't be negative or zero
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if ( $max_images <= 0 ) {
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return $images;
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}
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$id = $this->wp_post->ID;
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$image_ids = array();
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// list post thumbnail first if this post has one
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if ( \function_exists( 'has_post_thumbnail' ) && \has_post_thumbnail( $id ) ) {
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$image_ids[] = \get_post_thumbnail_id( $id );
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--$max_images;
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}
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if ( $max_images > 0 ) {
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// first try to get images that are actually in the post content
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if ( site_supports_blocks() && \has_blocks( $this->wp_post->post_content ) ) {
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$image_ids = $this->get_block_image_ids( $max_images, $image_ids );
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} else {
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// fallback to images attached to the post
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$query = new \WP_Query(
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array(
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'post_parent' => $id,
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'post_status' => 'inherit',
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'post_type' => 'attachment',
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'post_mime_type' => 'image',
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'order' => 'ASC',
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'orderby' => 'menu_order ID',
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'posts_per_page' => $max_images,
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)
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);
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foreach ( $query->get_posts() as $attachment ) {
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if ( ! \in_array( $attachment->ID, $image_ids, true ) ) {
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$image_ids[] = $attachment->ID;
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}
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}
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}
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}
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$image_ids = \array_unique( $image_ids );
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// get URLs for each image
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foreach ( $image_ids as $id ) {
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$image_size = 'full';
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/**
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* Filter the image URL returned for each post.
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*
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* @param array|false $thumbnail The image URL, or false if no image is available.
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* @param int $id The attachment ID.
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* @param string $image_size The image size to retrieve. Set to 'full' by default.
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*/
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$thumbnail = apply_filters(
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'activitypub_get_image',
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$this->get_image( $id, $image_size ),
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$id,
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$image_size
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);
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if ( $thumbnail ) {
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$mimetype = \get_post_mime_type( $id );
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$alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
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$image = array(
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'type' => 'Image',
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'url' => $thumbnail[0],
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'mediaType' => $mimetype,
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);
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if ( $alt ) {
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$image['name'] = $alt;
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}
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$images[] = $image;
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}
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}
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return $images;
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}
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/**
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* Return details about an image attachment.
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*
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* @param int $id The attachment ID.
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* @param string $image_size The image size to retrieve. Set to 'full' by default.
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*
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* @return array|false Array of image data, or boolean false if no image is available.
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*/
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protected function get_image( $id, $image_size = 'full' ) {
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/**
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* Hook into the image retrieval process. Before image retrieval.
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*
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* @param int $id The attachment ID.
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* @param string $image_size The image size to retrieve. Set to 'full' by default.
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*/
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do_action( 'activitypub_get_image_pre', $id, $image_size );
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$thumbnail = \wp_get_attachment_image_src( $id, $image_size );
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/**
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* Hook into the image retrieval process. After image retrieval.
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*
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* @param int $id The attachment ID.
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* @param string $image_size The image size to retrieve. Set to 'full' by default.
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*/
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do_action( 'activitypub_get_image_post', $id, $image_size );
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return $thumbnail;
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}
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/**
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* Returns the ActivityStreams 2.0 Object-Type for a Post based on the
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* settings and the Post-Type.
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*
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* @see https://www.w3.org/TR/activitystreams-vocabulary/#activity-types
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*
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* @return string The Object-Type.
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*/
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protected function get_object_type() {
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if ( 'wordpress-post-format' !== \get_option( 'activitypub_object_type', 'note' ) ) {
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return \ucfirst( \get_option( 'activitypub_object_type', 'note' ) );
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}
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$post_type = \get_post_type( $this->wp_post );
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switch ( $post_type ) {
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case 'post':
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$post_format = \get_post_format( $this->wp_post );
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switch ( $post_format ) {
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case 'aside':
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case 'status':
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case 'quote':
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case 'note':
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$object_type = 'Note';
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break;
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case 'gallery':
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case 'image':
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$object_type = 'Image';
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break;
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case 'video':
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$object_type = 'Video';
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break;
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case 'audio':
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$object_type = 'Audio';
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break;
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default:
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$object_type = 'Article';
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break;
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}
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break;
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case 'page':
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$object_type = 'Page';
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break;
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case 'attachment':
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$mime_type = \get_post_mime_type();
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$media_type = \preg_replace( '/(\/[a-zA-Z]+)/i', '', $mime_type );
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switch ( $media_type ) {
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case 'audio':
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$object_type = 'Audio';
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break;
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case 'video':
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$object_type = 'Video';
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break;
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case 'image':
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$object_type = 'Image';
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break;
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}
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break;
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default:
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$object_type = 'Article';
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break;
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}
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return $object_type;
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}
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/**
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* Returns a list of Mentions, used in the Post.
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*
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* @see https://docs.joinmastodon.org/spec/activitypub/#Mention
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*
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* @return array The list of Mentions.
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*/
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protected function get_cc() {
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$cc = array();
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$mentions = $this->get_mentions();
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if ( $mentions ) {
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foreach ( $mentions as $url ) {
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$cc[] = $url;
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}
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}
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return $cc;
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}
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/**
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* Returns a list of Tags, used in the Post.
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*
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* This includes Hash-Tags and Mentions.
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*
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* @return array The list of Tags.
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*/
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protected function get_tags() {
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$tags = array();
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$post_tags = \get_the_tags( $this->wp_post->ID );
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if ( $post_tags ) {
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foreach ( $post_tags as $post_tag ) {
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$tag = array(
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'type' => 'Hashtag',
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'href' => \esc_url( \get_tag_link( $post_tag->term_id ) ),
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'name' => esc_hashtag( $post_tag->name ),
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);
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$tags[] = $tag;
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}
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}
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$mentions = $this->get_mentions();
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if ( $mentions ) {
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foreach ( $mentions as $mention => $url ) {
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$tag = array(
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'type' => 'Mention',
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'href' => \esc_url( $url ),
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'name' => \esc_html( $mention ),
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);
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$tags[] = $tag;
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}
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}
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return $tags;
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}
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/**
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* Returns the content for the ActivityPub Item.
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*
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* The content will be generated based on the user settings.
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*
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* @return string The content.
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*/
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protected function get_content() {
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global $post;
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
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$post = $this->wp_post;
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$content = $this->get_post_content_template();
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// Fill in the shortcodes.
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setup_postdata( $post );
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$content = do_shortcode( $content );
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wp_reset_postdata();
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$content = \wp_kses( $content, $this->allowed_tags );
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$content = \wpautop( $content );
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$content = \preg_replace( '/[\n\r\t]/', '', $content );
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$content = \trim( $content );
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$content = \apply_filters( 'activitypub_the_content', $content, $post );
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$content = \html_entity_decode( $content, \ENT_QUOTES, 'UTF-8' );
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return $content;
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}
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/**
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* Gets the template to use to generate the content of the activitypub item.
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*
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* @return string The Template.
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*/
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protected function get_post_content_template() {
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if ( 'excerpt' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
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return "[ap_excerpt]\n\n[ap_permalink type=\"html\"]";
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}
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if ( 'title' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
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return "[ap_title]\n\n[ap_permalink type=\"html\"]";
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}
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if ( 'content' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
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return "[ap_content]\n\n[ap_hashtags]\n\n[ap_permalink type=\"html\"]";
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}
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return \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
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}
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/**
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* Helper function to get the @-Mentions from the post content.
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*
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* @return array The list of @-Mentions.
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*/
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protected function get_mentions() {
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return apply_filters( 'activitypub_extract_mentions', array(), $this->wp_post->post_content, $this->wp_post );
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}
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}
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