wordpress-activitypub/includes/class-activitypub-post.php
Matthias Pfefferle 4e653f5f75 0.1.0
* added basic WebFinger support
* added basic NodeInfo support
* fully functional "follow" activity
* send new posts to your followers
* receive comments from your followers
2018-12-20 11:33:08 +01:00

196 lines
4.4 KiB
PHP

<?php
/**
* ActivityPub Post Class
*
* @author Matthias Pfefferle
*/
class Activitypub_Post {
private $post;
public function __construct( $post = null ) {
$this->post = get_post( $post );
}
public function get_post() {
return $this->post;
}
public function get_post_author() {
return $this->post->post_author;
}
public function to_array() {
$post = $this->post;
setup_postdata( $post );
$array = array(
'id' => get_permalink( $post ),
'type' => $this->get_object_type(),
'published' => date( 'Y-m-d\TH:i:s\Z', strtotime( $post->post_date ) ),
'attributedTo' => get_author_posts_url( $post->post_author ),
'summary' => apply_filters( 'the_excerpt', get_post_field( 'post_excerpt', $post->ID ) ),
'inReplyTo' => null,
'content' => apply_filters( 'the_content', get_post_field( 'post_content', $post->ID ) ),
'contentMap' => array(
strstr( get_locale(), '_', true ) => apply_filters( 'the_content', get_post_field( 'post_content', $post->ID ) ),
),
'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(),
);
wp_reset_postdata();
return apply_filters( 'activitypub_post', $array );
}
public function to_json() {
return wp_json_encode( $this->to_array() );
}
public function get_attachments() {
$max_images = apply_filters( 'activitypub_max_images', 3 );
$images = array();
// max images can't be negative or zero
if ( $max_images <= 0 ) {
$max_images = 1;
}
$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--;
}
// 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 ) ) {
$image_ids[] = $attachment->ID;
}
}
// get URLs for each image
foreach ( $image_ids as $id ) {
$thumbnail = wp_get_attachment_image_src( $id, 'full' );
$mimetype = get_post_mime_type( $id );
if ( $thumbnail ) {
$images[] = array(
'url' => $thumbnail[0],
'type' => $mimetype
);
}
}
$attachments = array();
// add attachments
if ( $images ) {
foreach ( $images as $image ) {
$attachment = array(
"type" => "Image",
"url" => $image['url'],
"mediaType" => $image['type'],
);
$attachments[] = $attachment;
}
}
return $attachments;
}
public function get_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->name,
);
$tags[] = $tag;
}
}
return $tags;
}
/**
* Returns the as2 object-type for a given post
*
* @param string $type the object-type
* @param Object $post the post-object
*
* @return string the object-type
*/
public function get_object_type() {
$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;
}
return $object_type;
}
}