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