André Menrath
6c6d9076a8
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135 lines
2.9 KiB
PHP
135 lines
2.9 KiB
PHP
<?php
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namespace Activitypub\Transformer;
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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 object.
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*
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* @var
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*/
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protected $object;
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protected $activitypub_object_type = 'Base_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 stdClass $object The WP_Post object
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*
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* @return void
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*/
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public static function transform( $object ) {
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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 stdClass $object
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*/
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public function __construct( $object=null ) {
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if ( $object ) {
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$this->object = $object;
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}
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}
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/**
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* Transform the WordPress Object into an ActivityPub Object.
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*
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* @return Activitypub\Activity\Base_Object
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*/
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public function to_object() {
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$object = new Base_Object();
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$vars = $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( $object, $setter ), $value );
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}
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}
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}
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return $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( $type );
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$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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* Get the name used for registering the transformer with the ActivityPub plugin.
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*
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* @since version_number_transformer_management_placeholder
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* @return string name
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*/
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abstract public function get_name();
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/**
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* Get the display name for the ActivityPub transformer.
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*
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* @since version_number_transformer_management_placeholder
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* @return string display name
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*/
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abstract public function get_label();
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/**
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* Returns the ActivityStreams 2.0 Object-Type for a Post.
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*
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* @see https://www.w3.org/TR/activitystreams-vocabulary/#activity-types
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*
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* @return string The Object-Type.
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*/
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abstract protected function get_object_type();
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}
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