prevent sweeping of followers taxonomies

thanks @akirk

b0db9db87e

activitypub.php

@@ -27,6 +27,7 @@ function init() {
 	\defined( 'ACTIVITYPUB_HASHTAGS_REGEXP' ) || \define( 'ACTIVITYPUB_HASHTAGS_REGEXP', '(?:(?<=\s)|(?<=<p>)|(?<=<br>)|^)#([A-Za-z0-9_]+)(?:(?=\s|[[:punct:]]|$))' );
 	\defined( 'ACTIVITYPUB_USERNAME_REGEXP' ) || \define( 'ACTIVITYPUB_USERNAME_REGEXP', '(?:([A-Za-z0-9_-]+)@((?:[A-Za-z0-9_-]+\.)+[A-Za-z]+))' );
 	\defined( 'ACTIVITYPUB_CUSTOM_POST_CONTENT' ) || \define( 'ACTIVITYPUB_CUSTOM_POST_CONTENT', "<strong>[ap_title]</strong>\n\n[ap_content]\n\n[ap_hashtags]\n\n[ap_shortlink]" );
+
 	\define( 'ACTIVITYPUB_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
 	\define( 'ACTIVITYPUB_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );
 	\define( 'ACTIVITYPUB_PLUGIN_FILE', plugin_dir_path( __FILE__ ) . '/' . basename( __FILE__ ) );
@@ -139,11 +140,25 @@ function plugin_settings_link( $actions ) {
 /**
  * Only load code that needs BuddyPress to run once BP is loaded and initialized.
  */
-function enable_buddypress_features() {
+add_action(
+	'bp_include',
+	function() {
 		require_once \dirname( __FILE__ ) . '/integration/class-buddypress.php';
 		Integration\Buddypress::init();
+	},
+	0
+);
+
+add_action(
+	'plugins_loaded',
+	function() {
+		if ( defined( 'WP_SWEEP_VERSION' ) ) {
+			require_once \dirname( __FILE__ ) . '/integration/class-wp-sweep.php';
+			Integration\Wp_Sweep::init();
 		}
-add_action( 'bp_include', __NAMESPACE__ . '\enable_buddypress_features' );
+	},
+	0
+);
 
 /**
  * `get_plugin_data` wrapper

includes/collection/class-followers.php

@@ -338,6 +338,25 @@ class Followers {
 		return $items;
 	}
 
+	/**
+	 * Get all Followers
+	 *
+	 * @param array $args The WP_Term_Query arguments.
+	 *
+	 * @return array The Term list of Followers.
+	 */
+	public static function get_all_followers( $args = array() ) {
+		$defaults = array(
+			'taxonomy'   => self::TAXONOMY,
+			'hide_empty' => false,
+		);
+
+		$args  = wp_parse_args( $args, $defaults );
+		$terms = new WP_Term_Query( $args );
+
+		return $terms->get_terms();
+	}
+
 	/**
 	 * Count the total number of followers
 	 *

integration/class-wp-sweep.php

@@ -0,0 +1,50 @@
+<?php
+namespace Activitypub\Integration;
+
+use Activitypub\Collection\Followers;
+
+/**
+ * Manages the compatibility with WP Sweep.
+ *
+ * @link https://wordpress.org/plugins/wp-sweep/
+ * @link https://github.com/polylang/polylang/tree/master/integrations/wp-sweep
+ */
+class Wp_Sweep {
+	/**
+	 * Setups actions.
+	 *
+	 * @return void
+	 */
+	public static function init() {
+		add_filter( 'wp_sweep_excluded_taxonomies', array( self::class, 'excluded_taxonomies' ) );
+		add_filter( 'wp_sweep_excluded_termids', array( self::class, 'excluded_termids' ), 0 );
+	}
+
+	/**
+	 * Add 'activitypub-followers' to excluded taxonomies otherwise terms loose their language
+	 * and translation group.
+	 *
+	 * @param array $excluded_taxonomies List of taxonomies excluded from sweeping.
+	 *
+	 * @return array The list of taxonomies excluded from sweeping.
+	 */
+	public static function excluded_taxonomies( $excluded_taxonomies ) {
+		return array_merge( $excluded_taxonomies, array( Followers::TAXONOMY ) );
+	}
+
+	/**
+	 * Add the translation of the default taxonomy terms and our language terms to the excluded terms.
+	 *
+	 * @param array $excluded_term_ids List of term ids excluded from sweeping.
+	 *
+	 * @return array The list of term ids excluded from sweeping.
+	 */
+	public static function excluded_termids( $excluded_term_ids ) {
+		// We got a list of excluded terms (defaults and parents). Let exclude their translations too.
+		$followers = Followers::get_all_followers( array( 'fields' => 'ids' ) );
+
+		$excluded_term_ids = array_merge( $excluded_term_ids, $followers );
+
+		return array_unique( $excluded_term_ids );
+	}
+}