Support for WP REST Cache

integration/class-wp-rest-cache.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * WP REST Cache integration file.
+ *
+ * @package Activitypub
+ */
+
+namespace Activitypub\Integration;
+
+use Activitypub\Collection\Actors;
+
+/**
+ * Compatibility with the WP REST Cache plugin
+ *
+ * @see https://wordpress.org/plugins/wp-rest-cache/
+ */
+class WP_Rest_Cache {
+	/**
+	 * Initialize the class, registering WordPress hooks.
+	 */
+	public static function init() {
+		\add_filter( 'wp_rest_cache/allowed_endpoints', array( self::class, 'add_activitypub_endpoints' ) );
+	}
+
+	/**
+	 * Add ActivityPub endpoints to the list of allowed endpoints.
+	 *
+	 * @param array $endpoints List of allowed endpoints.
+	 *
+	 * @return array
+	 */
+	public static function add_activitypub_endpoints( $endpoints ) {
+		$endpoints[ ACTIVITYPUB_REST_NAMESPACE ] = array( 'actors', 'users', 'posts' );
+
+		return $endpoints;
+	}
+}

integration/load.php

@@ -122,6 +122,10 @@ function ( $transformer, $data, $object_class ) {
 	if ( \defined( 'ICL_SITEPRESS_VERSION' ) ) {
 		WPML::init();
 	}
+
+	if ( class_exists( 'WP_Rest_Cache_Plugin\Includes\Plugin' ) ) {
+		WP_Rest_Cache::init();
+	}
 }
 \add_action( 'plugins_loaded', __NAMESPACE__ . '\plugin_init' );