laipower/wp-content/plugins/activitypub/includes/transformer/class-base.php

124 lines
2.8 KiB
PHP

<?php
namespace Activitypub\Transformer;
use WP_Post;
use WP_Comment;
use Activitypub\Activity\Activity;
use Activitypub\Activity\Base_Object;
/**
* WordPress Base Transformer
*
* Transformers are responsible for transforming a WordPress objects into different ActivityPub
* Object-Types or Activities.
*/
abstract class Base {
/**
* The WP_Post or WP_Comment object.
*
* This is the source object of the transformer.
*
* @var WP_Post|WP_Comment
*/
protected $wp_object;
/**
* Static function to Transform a WordPress Object.
*
* This helps to chain the output of the Transformer.
*
* @param WP_Post|WP_Comment $wp_object The WordPress object
*
* @return Base_Object
*/
public static function transform( $object ) {
return new static( $object );
}
/**
* Base constructor.
*
* @param WP_Post|WP_Comment $wp_object The WordPress object
*/
public function __construct( $wp_object ) {
$this->wp_object = $wp_object;
}
/**
* Transform all properties with available get(ter) functions.
*
* @param Base_Object|object $object
*
* @return Base_Object|object $object
*/
protected function transform_object_properties( $activitypub_object ) {
$vars = $activitypub_object->get_object_var_keys();
foreach ( $vars as $var ) {
$getter = 'get_' . $var;
if ( method_exists( $this, $getter ) ) {
$value = call_user_func( array( $this, $getter ) );
if ( isset( $value ) ) {
$setter = 'set_' . $var;
call_user_func( array( $activitypub_object, $setter ), $value );
}
}
}
return $activitypub_object;
}
/**
* Transform the WordPress Object into an ActivityPub Object.
*
* @return Activitypub\Activity\Base_Object
*/
public function to_object() {
$activitypub_object = new Base_Object();
$activitypub_object = $this->transform_object_properties( $activitypub_object );
return $activitypub_object;
}
/**
* Transforms the ActivityPub Object to an Activity
*
* @param string $type The Activity-Type.
*
* @return \Activitypub\Activity\Activity The Activity.
*/
public function to_activity( $type ) {
$object = $this->to_object();
$activity = new Activity();
$activity->set_type( $type );
// Pre-fill the Activity with data (for example cc and to).
$activity->set_object( $object );
// Use simple Object (only ID-URI) for Like and Announce
if ( in_array( $type, array( 'Like', 'Announce' ), true ) ) {
$activity->set_object( $object->get_id() );
}
return $activity;
}
/**
* Returns the ID of the WordPress Object.
*
* @return int The ID of the WordPress Object
*/
abstract public function get_wp_user_id();
/**
* Change the User-ID of the WordPress Post.
*
* @return int The User-ID of the WordPress Post
*/
abstract public function change_wp_user_id( $user_id );
}