wordpress-activitypub/includes/model/class-post.php
2023-01-23 23:51:27 +01:00

319 lines
8.4 KiB
PHP

<?php
namespace Activitypub\Model;
/**
* ActivityPub Post Class
*
* @author Matthias Pfefferle
*/
class Post {
private $post;
private $post_author;
private $id;
private $summary;
private $content;
private $attachments;
private $tags;
private $object_type;
public function __construct( $post ) {
$this->post = \get_post( $post );
$this->post_author = $this->post->post_author;
$this->id = $this->generate_id();
$this->summary = $this->generate_the_title();
$this->content = $this->generate_the_content();
$this->attachments = $this->generate_attachments();
$this->tags = $this->generate_tags();
$this->object_type = $this->generate_object_type();
}
public function __call( $method, $params ) {
$var = \strtolower( \substr( $method, 4 ) );
if ( \strncasecmp( $method, 'get', 3 ) === 0 ) {
return $this->$var;
}
if ( \strncasecmp( $method, 'set', 3 ) === 0 ) {
$this->$var = $params[0];
}
}
public function to_array() {
$post = $this->post;
$array = array(
'id' => $this->id,
'type' => $this->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->summary,
'inReplyTo' => null,
'content' => $this->content,
'contentMap' => array(
\strstr( \get_locale(), '_', true ) => $this->content,
),
'to' => array( 'https://www.w3.org/ns/activitystreams#Public' ),
'cc' => array( 'https://www.w3.org/ns/activitystreams#Public' ),
'attachment' => $this->attachments,
'tag' => $this->tags,
);
return \apply_filters( 'activitypub_post', $array );
}
public function to_json() {
return \wp_json_encode( $this->to_array(), \JSON_HEX_TAG | \JSON_HEX_AMP | \JSON_HEX_QUOT );
}
public function generate_id() {
$post = $this->post;
if ( 'trash' === get_post_status( $post ) ) {
$permalink = \get_post_meta( $post->ID, 'activitypub_canonical_url', true );
} else {
$permalink = \get_permalink( $post );
}
return $permalink;
}
public function generate_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;
}
}
return $images;
}
public function generate_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;
}
}
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 generate_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;
}
return $object_type;
}
/**
* Generates the content for the activitypub item.
*
* @return string the content
*/
public function generate_the_content() {
$post = $this->post;
$content = $this->get_post_content_template();
// Fill in the shortcodes.
setup_postdata( $post );
$content = do_shortcode( $content );
wp_reset_postdata();
$content = \trim( \preg_replace( '/[\r\n]{2,}/', '', $content ) );
$filtered_content = \apply_filters( 'activitypub_the_content', $content, $this->post );
$decoded_content = \html_entity_decode( $filtered_content, \ENT_QUOTES, 'UTF-8' );
$allowed_html = \apply_filters( 'activitypub_allowed_html', \get_option( 'activitypub_allowed_html', ACTIVITYPUB_ALLOWED_HTML ) );
if ( $allowed_html ) {
return \strip_tags( $decoded_content, $allowed_html );
}
return $decoded_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<p>[ap_permalink]</p>";
}
if ( 'title' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
return "<p>[ap_title]</p>\n\n<p>[ap_permalink]</p>";
}
if ( 'content' === \get_option( 'activitypub_post_content_type', 'content' ) ) {
return "[ap_content]\n\n<p>[ap_hashtags]</p>\n\n<p>[ap_permalink]</p>";
}
// 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;
}
}