wordpress-activitypub/includes/model/class-post.php

562 lines
13 KiB
PHP

<?php
namespace Activitypub\Model;
/**
* ActivityPub Post Class
*
* @author Matthias Pfefferle
*/
class Post {
/**
* The WordPress Post Object.
*
* @var WP_Post
*/
private $post;
/**
* The Post Author.
*
* @var string
*/
private $post_author;
/**
* The Object ID.
*
* @var string
*/
private $id;
/**
* The Object Summary.
*
* @var string
*/
private $summary;
/**
* The Object Summary
*
* @var string
*/
private $content;
/**
* The Object Attachments. This is usually a list of Images.
*
* @var array
*/
private $attachments;
/**
* The Object Tags. This is usually the list of used Hashtags.
*
* @var array
*/
private $tags;
/**
* The Object Type
*
* @var string
*/
private $object_type;
/**
* The Allowed Tags, used in the content.
*
* @var array
*/
private $allowed_tags = array(
'a' => array(
'href' => array(),
'title' => array(),
'class' => array(),
'rel' => array(),
),
'br' => array(),
'p' => array(
'class' => array(),
),
'span' => array(
'class' => array(),
),
'div' => array(
'class' => array(),
),
'ul' => array(),
'ol' => array(),
'li' => array(),
'strong' => array(
'class' => array(),
),
'b' => array(
'class' => array(),
),
'i' => array(
'class' => array(),
),
'em' => array(
'class' => array(),
),
'blockquote' => array(),
'cite' => array(),
);
private $delete;
private $updated;
private $replies;
/**
* Constructor
*
* @param WP_Post $post
*/
public function __construct( $post ) {
$this->post = \get_post( $post );
}
/**
* Magic function to implement getter and setter
*
* @param string $method
* @param string $params
*
* @return void
*/
public function __call( $method, $params ) {
$var = \strtolower( \substr( $method, 4 ) );
if ( \strncasecmp( $method, 'get', 3 ) === 0 ) {
if ( empty( $this->$var ) && ! empty( $this->post->$var ) ) {
return $this->post->$var;
}
return $this->$var;
}
if ( \strncasecmp( $method, 'set', 3 ) === 0 ) {
$this->$var = $params[0];
}
}
/**
* Converts this Object into an Array.
*
* @return array
*/
public function to_array() {
$post = $this->post;
$array = array(
'id' => $this->get_id(),
'type' => $this->get_object_type(),
'published' => \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $post->post_date_gmt ) ),
'attributedTo' => \get_author_posts_url( $post->post_author ),
'summary' => $this->get_summary(),
'inReplyTo' => null,
'url' => \get_permalink( $post->ID ),
'content' => $this->get_content(),
'contentMap' => array(
\strstr( \get_locale(), '_', true ) => $this->get_content(),
),
'to' => array( 'https://www.w3.org/ns/activitystreams#Public' ),
'cc' => array( 'https://www.w3.org/ns/activitystreams#Public' ),
'attachment' => $this->get_attachments(),
'tag' => $this->get_tags(),
);
if ( $this->replies ) { //has comments
$array['replies'] = $this->get_replies();
}
if ( $this->deleted ) { //is trash
$array['deleted'] = \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $post->post_modified_gmt ) );
$deleted_post_slug = \get_post_meta( $post->ID, 'activitypub_canonical_url', true );
if ( $deleted_post_slug ) {
$array['id'] = $deleted_post_slug;
}
}
if ( $this->updated ) { //post_modified
$array['updated'] = \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $post->post_modified_gmt ) );
}
return \apply_filters( 'activitypub_post', $array );
}
/**
* Converts this Object into a JSON String
*
* @return string
*/
public function to_json() {
return \wp_json_encode( $this->to_array(), \JSON_HEX_TAG | \JSON_HEX_AMP | \JSON_HEX_QUOT );
}
/**
* Returns the ID of an Activity Object
*
* @return string
*/
public function get_id() {
if ( $this->id ) {
return $this->id;
}
$post = $this->post;
if ( 'trash' === get_post_status( $post ) && \get_post_meta( $post->ID, 'activitypub_canonical_url', true ) ) {
$object_id = \get_post_meta( $post->ID, 'activitypub_canonical_url', true );
} else {
$object_id = \add_query_arg(
array(
'p' => $post->ID,
),
\trailingslashit( \site_url() )
);
}
$this->id = $object_id;
return $object_id;
}
/**
* Returns a list of Image Attachments
*
* @return array
*/
public function get_attachments() {
if ( $this->attachments ) {
return $this->attachments;
}
$max_images = intval( \apply_filters( 'activitypub_max_image_attachments', \get_option( 'activitypub_max_image_attachments', ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS ) ) );
$images = array();
// max images can't be negative or zero
if ( $max_images <= 0 ) {
return $images;
}
$id = $this->post->ID;
$image_ids = array();
// list post thumbnail first if this post has one
if ( \function_exists( 'has_post_thumbnail' ) && \has_post_thumbnail( $id ) ) {
$image_ids[] = \get_post_thumbnail_id( $id );
$max_images--;
}
if ( $max_images > 0 ) {
// then list any image attachments
$query = new \WP_Query(
array(
'post_parent' => $id,
'post_status' => 'inherit',
'post_type' => 'attachment',
'post_mime_type' => 'image',
'order' => 'ASC',
'orderby' => 'menu_order ID',
'posts_per_page' => $max_images,
)
);
foreach ( $query->get_posts() as $attachment ) {
if ( ! \in_array( $attachment->ID, $image_ids, true ) ) {
$image_ids[] = $attachment->ID;
}
}
}
$image_ids = \array_unique( $image_ids );
// get URLs for each image
foreach ( $image_ids as $id ) {
$alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
$thumbnail = \wp_get_attachment_image_src( $id, 'full' );
$mimetype = \get_post_mime_type( $id );
if ( $thumbnail ) {
$image = array(
'type' => 'Image',
'url' => $thumbnail[0],
'mediaType' => $mimetype,
);
if ( $alt ) {
$image['name'] = $alt;
}
$images[] = $image;
}
}
$this->attachments = $images;
return $images;
}
/**
* Returns a list of Tags, used in the Post
*
* @return array
*/
public function get_tags() {
if ( $this->tags ) {
return $this->tags;
}
$tags = array();
$post_tags = \get_the_tags( $this->post->ID );
if ( $post_tags ) {
foreach ( $post_tags as $post_tag ) {
$tag = array(
'type' => 'Hashtag',
'href' => \get_tag_link( $post_tag->term_id ),
'name' => '#' . $post_tag->slug,
);
$tags[] = $tag;
}
}
$mentions = apply_filters( 'activitypub_extract_mentions', array(), $this->post->post_content, $this );
if ( $mentions ) {
foreach ( $mentions as $mention => $url ) {
$tag = array(
'type' => 'Mention',
'href' => $url,
'name' => $mention,
);
$tags[] = $tag;
}
}
$this->tags = $tags;
return $tags;
}
public function get_replies() {
if ( $this->replies ) {
return $this->replies;
}
$replies = null;
if ( $this->post->comment_count > 0 ) {
$args = array(
'post_id' => $this->post->ID,
'hierarchical' => false,
'status' => 'approve',
);
$comments = \get_comments( $args );
$items = array();
foreach ( $comments as $comment ) {
// include self replies
if ( $this->post->post_author === $comment->user_id ) {
$comment_url = \add_query_arg( //
array(
'p' => $this->post->ID,
'replytocom' => $comment->comment_ID,
),
trailingslashit( site_url() )
);
$items[] = $comment_url;
} else {
$ap_object = \unserialize( \get_comment_meta( $comment->comment_ID, 'ap_object', true ) );
$comment_url = \get_comment_meta( $comment->comment_ID, 'source_url', true );
if ( ! empty( $comment_url ) ) {
$items[] = \get_comment_meta( $comment->comment_ID, 'source_url', true );
}
}
}
$replies = (object) array(
'type' => 'Collection',
'id' => \add_query_arg( array( 'replies' => '' ), $this->id ),
'first' => (object) array(
'type' => 'CollectionPage',
'partOf' => \add_query_arg( array( 'replies' => '' ), $this->id ),
'items' => $items,
),
);
}
$this->replies = $replies;
return $replies;
}
/**
* Returns the as2 object-type for a given post
*
* @return string the object-type
*/
public function get_object_type() {
if ( $this->object_type ) {
return $this->object_type;
}
if ( 'wordpress-post-format' !== \get_option( 'activitypub_object_type', 'note' ) ) {
return \ucfirst( \get_option( 'activitypub_object_type', 'note' ) );
}
$post_type = \get_post_type( $this->post );
switch ( $post_type ) {
case 'post':
$post_format = \get_post_format( $this->post );
switch ( $post_format ) {
case 'aside':
case 'status':
case 'quote':
case 'note':
$object_type = 'Note';
break;
case 'gallery':
case 'image':
$object_type = 'Image';
break;
case 'video':
$object_type = 'Video';
break;
case 'audio':
$object_type = 'Audio';
break;
default:
$object_type = 'Article';
break;
}
break;
case 'page':
$object_type = 'Page';
break;
case 'attachment':
$mime_type = \get_post_mime_type();
$media_type = \preg_replace( '/(\/[a-zA-Z]+)/i', '', $mime_type );
switch ( $media_type ) {
case 'audio':
$object_type = 'Audio';
break;
case 'video':
$object_type = 'Video';
break;
case 'image':
$object_type = 'Image';
break;
}
break;
default:
$object_type = 'Article';
break;
}
$this->object_type = $object_type;
return $object_type;
}
/**
* Returns the content for the ActivityPub Item.
*
* @return string the content
*/
public function get_content() {
global $post;
if ( $this->content ) {
return $this->content;
}
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
$post = $this->post;
$content = $this->get_post_content_template();
// Fill in the shortcodes.
setup_postdata( $post );
$content = do_shortcode( $content );
wp_reset_postdata();
$content = \wpautop( \wp_kses( $content, $this->allowed_tags ) );
$content = \trim( \preg_replace( '/[\n\r\t]/', '', $content ) );
$content = \apply_filters( 'activitypub_the_content', $content, $post );
$content = \html_entity_decode( $content, \ENT_QUOTES, 'UTF-8' );
$this->content = $content;
return $content;
}
/**
* Gets the template to use to generate the content of the activitypub item.
*
* @return string the template
*/
public function get_post_content_template() {
if ( 'excerpt' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
return "[ap_excerpt]\n\n[ap_permalink type=\"html\"]";
}
if ( 'title' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
return "[ap_title]\n\n[ap_permalink type=\"html\"]";
}
if ( 'content' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
return "[ap_content]\n\n[ap_hashtags]\n\n[ap_permalink type=\"html\"]";
}
// Upgrade from old template codes to shortcodes.
$content = self::upgrade_post_content_template();
return $content;
}
/**
* Updates the custom template to use shortcodes instead of the deprecated templates.
*
* @return string the updated template content
*/
public static function upgrade_post_content_template() {
// Get the custom template.
$old_content = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
// If the old content exists but is a blank string, we're going to need a flag to updated it even
// after setting it to the default contents.
$need_update = false;
// If the old contents is blank, use the defaults.
if ( '' === $old_content ) {
$old_content = ACTIVITYPUB_CUSTOM_POST_CONTENT;
$need_update = true;
}
// Set the new content to be the old content.
$content = $old_content;
// Convert old templates to shortcodes.
$content = \str_replace( '%title%', '[ap_title]', $content );
$content = \str_replace( '%excerpt%', '[ap_excerpt]', $content );
$content = \str_replace( '%content%', '[ap_content]', $content );
$content = \str_replace( '%permalink%', '[ap_permalink type="html"]', $content );
$content = \str_replace( '%shortlink%', '[ap_shortlink type="html"]', $content );
$content = \str_replace( '%hashtags%', '[ap_hashtags]', $content );
$content = \str_replace( '%tags%', '[ap_hashtags]', $content );
// Store the new template if required.
if ( $content !== $old_content || $need_update ) {
\update_option( 'activitypub_custom_post_content', $content );
}
return $content;
}
/**
* Get deleted datetime
*/
public function get_deleted() {
$post = $this->post;
$deleted = null;
if ( 'trash' === $post->post_status ) {
$this->deleted = \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $post->post_modified_gmt ) );
}
return $deleted;
}
}