148 lines
4 KiB
PHP
148 lines
4 KiB
PHP
<?php
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/**
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* Replace the default ActivityPub Transformer
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*
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* @package Activitypub_Event_Extensions
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* @license AGPL-3.0-or-later
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*/
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namespace Activitypub_Event_Extensions\Activitypub\Transformer;
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use Activitypub\Activity\Extended_Object\Event as Event_Object;
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use Activitypub\Transformer\Post;
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use function Activitypub\get_rest_url_by_path;
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/**
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* Base transformer for WordPress event post types to ActivityPub events.
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*
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* Everything that transforming several WordPress post types that represent events
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* have in common, as well as sane defaults for events should be defined here.
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*/
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class Event extends Post {
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/**
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* The WordPress event taxonomy.
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*
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* @var string
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*/
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protected $wp_taxonomy;
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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_actor() {
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return $this->get_attributed_to();
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}
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/**
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* Returns the ActivityStreams 2.0 Object-Type for an Event.
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*
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* @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-event
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*
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* @return string The Event Object-Type.
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*/
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protected function get_type() {
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return 'Event';
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}
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/**
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* Returns the title of the event.
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*
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* @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-name
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*
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* @return string The name.
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*/
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protected function get_name() {
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return $this->wp_object->post_title;
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}
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/**
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* Extend the construction of the Post Transformer to also set the according taxonomy of the event post type.
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*
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* @param WP_Post $wp_object The WordPress post object (event).
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* @param string $wp_taxonomy The taxonomy slug of the event post type.
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*/
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public function __construct( $wp_object, $wp_taxonomy ) {
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parent::__construct( $wp_object );
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$this->wp_taxonomy = $wp_taxonomy;
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}
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/**
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* Extract the join mode.
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*
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* Currently we don't handle joins, we always mark events as external.
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*
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* @return string
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*/
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public function get_join_mode() {
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return 'external';
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}
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/**
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* Extract the external participation url.
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*
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* Currently we don't handle joins, we always mark events as external.
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* We just link back to the events HTML representation on our WordPress site.
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*
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* @return string|null The external participation URL.
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*/
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public function get_external_participation_url(): string|null {
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return 'external' === $this->get_join_mode() ? $this->get_url() : null;
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}
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/**
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* Set the event category, via the mapping setting.
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*/
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public function get_category() {
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$current_category_mapping = \get_option( 'activitypub_event_extensions_event_category_mappings', array() );
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$terms = \get_the_terms( $this->wp_object, $this->wp_taxonomy );
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// Check if the event has a category set and if that category has a specific mapping return that one.
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if ( ! is_wp_error( $terms ) && $terms && array_key_exists( $terms[0]->slug, $current_category_mapping ) ) {
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return sanitize_text_field( $current_category_mapping[ $terms[0]->slug ] );
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} else {
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// Return the default event category.
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return sanitize_text_field( \get_option( 'activitypub_event_extensions_default_event_category', 'MEETING' ) );
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}
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}
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/**
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* Generic function that converts an WP-Event object to an ActivityPub-Event object.
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*
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* @return Event_Object
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*/
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public function to_object() {
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$activitypub_object = new Event_Object();
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$activitypub_object = $this->transform_object_properties( $activitypub_object );
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$published = \strtotime( $this->wp_object->post_date_gmt );
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$activitypub_object->set_published( \gmdate( 'Y-m-d\TH:i:s\Z', $published ) );
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$updated = \strtotime( $this->wp_object->post_modified_gmt );
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if ( $updated > $published ) {
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$activitypub_object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', $updated ) );
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}
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$activitypub_object->set_content_map(
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array(
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$this->get_locale() => $this->get_content(),
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)
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);
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$activitypub_object->set_to(
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array(
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'https://www.w3.org/ns/activitystreams#Public',
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$this->get_actor_object()->get_followers(),
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)
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);
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return $activitypub_object;
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}
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}
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