140 lines
3.7 KiB
PHP
140 lines
3.7 KiB
PHP
<?php
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/**
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* ActivityPub Class
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*
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* @author Matthias Pfefferle
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*/
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class Activitypub {
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/**
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* Return a AS2 JSON version of an author, post or page
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*
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* @param string $template the path to the template object
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*
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* @return string the new path to the JSON template
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*/
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public static function render_json_template( $template ) {
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if ( ! is_author() && ! is_singular() ) {
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return $template;
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}
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if ( is_author() ) {
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$json_template = dirname( __FILE__ ) . '/../templates/json-author.php';
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} elseif ( is_singular() ) {
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$json_template = dirname( __FILE__ ) . '/../templates/json-post.php';
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}
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global $wp_query;
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if ( isset( $wp_query->query_vars['as2'] ) ) {
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return $json_template;
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}
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if ( ! isset( $_SERVER['HTTP_ACCEPT'] ) ) {
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return $template;
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}
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// interpret accept header
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$pos = stripos( $_SERVER['HTTP_ACCEPT'], ';' );
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if ( $pos ) {
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$accept_header = substr( $_SERVER['HTTP_ACCEPT'], 0, $pos );
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} else {
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$accept_header = $_SERVER['HTTP_ACCEPT'];
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}
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// accept header as an array
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$accept = explode( ',', trim( $accept_header ) );
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if (
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! in_array( 'application/activity+json', $accept, true ) &&
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! in_array( 'application/ld+json', $accept, true ) &&
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! in_array( 'application/json', $accept, true )
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) {
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return $template;
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}
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return $json_template;
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}
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/**
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* Add the 'photos' query variable so WordPress
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* won't mangle it.
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*/
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public static function add_query_vars( $vars ) {
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$vars[] = 'as2';
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return $vars;
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}
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/**
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* Add our rewrite endpoint to permalinks and pages.
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*/
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public static function add_rewrite_endpoint() {
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add_rewrite_endpoint( 'as2', EP_AUTHORS | EP_PERMALINK | EP_PAGES );
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}
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/**
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* Marks the post as "no webmentions sent yet"
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*
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* @param int $post_id
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*/
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public static function schedule_post_activity( $new_status, $old_status, $post ) {
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if ( 'publish' === $new_status && 'publish' !== $old_status ) {
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wp_schedule_single_event( time() + wp_rand( 0, 120 ), 'activitypub_send_post_activity', array( $post->ID ) );
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} elseif ( 'publish' === $new_status ) {
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wp_schedule_single_event( time() + wp_rand( 0, 120 ), 'activitypub_send_update_activity', array( $post->ID ) );
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}
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}
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/**
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* Replaces the default avatar
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*
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* @param array $args Arguments passed to get_avatar_data(), after processing.
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* @param int|string|object $id_or_email A user ID, email address, or comment object
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*
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* @return array $args
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*/
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public static function pre_get_avatar_data( $args, $id_or_email ) {
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if ( ! $id_or_email instanceof WP_Comment ||
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! isset( $id_or_email->comment_type ) ||
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$id_or_email->user_id ) {
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return $args;
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}
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$allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) );
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if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types, true ) ) {
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$args['url'] = false;
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/** This filter is documented in wp-includes/link-template.php */
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return apply_filters( 'get_avatar_data', $args, $id_or_email );
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}
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// check if comment has an avatar
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$avatar = self::get_avatar_url( $id_or_email->comment_ID );
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if ( $avatar ) {
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if ( ! isset( $args['class'] ) || ! is_array( $args['class'] ) ) {
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$args['class'] = array( 'u-photo' );
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} else {
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$args['class'][] = 'u-photo';
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$args['class'] = array_unique( $args['class'] );
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}
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$args['url'] = $avatar;
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$args['class'][] = 'avatar-activitypub';
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}
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return $args;
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}
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/**
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* Function to retrieve Avatar URL if stored in meta
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*
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*
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* @param int|WP_Comment $comment
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*
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* @return string $url
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*/
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public static function get_avatar_url( $comment ) {
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if ( is_numeric( $comment ) ) {
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$comment = get_comment( $comment );
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}
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return get_comment_meta( $comment->comment_ID, 'avatar_url', true );
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}
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}
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