Initial commit

wp-content/plugins/activitypub/includes/peer/class-followers.php

@@ -0,0 +1,80 @@
+<?php
+namespace Activitypub\Peer;
+
+/**
+ * ActivityPub Followers DB-Class
+ *
+ * @author Matthias Pfefferle
+ */
+class Followers {
+
+	public static function get_followers( $author_id ) {
+		$followers = \get_user_option( 'activitypub_followers', $author_id );
+
+		if ( ! $followers ) {
+			return array();
+		}
+
+		foreach ( $followers as $key => $follower ) {
+			if (
+				\is_array( $follower ) &&
+				isset( $follower['type'] ) &&
+				'Person' === $follower['type'] &&
+				isset( $follower['id'] ) &&
+				false !== \filter_var( $follower['id'], FILTER_VALIDATE_URL )
+			) {
+				$followers[ $key ] = $follower['id'];
+			}
+		}
+
+		return $followers;
+	}
+
+	public static function count_followers( $author_id ) {
+		$followers = self::get_followers( $author_id );
+
+		return \count( $followers );
+	}
+
+	public static function add_follower( $actor, $author_id ) {
+		$followers = \get_user_option( 'activitypub_followers', $author_id );
+
+		if ( ! \is_string( $actor ) ) {
+			if (
+				\is_array( $actor ) &&
+				isset( $actor['type'] ) &&
+				'Person' === $actor['type'] &&
+				isset( $actor['id'] ) &&
+				false !== \filter_var( $actor['id'], FILTER_VALIDATE_URL )
+			) {
+				$actor = $actor['id'];
+			}
+
+			return new \WP_Error( 'invalid_actor_object', \__( 'Unknown Actor schema', 'activitypub' ), array(
+				'status' => 404,
+			) );
+		}
+
+		if ( ! \is_array( $followers ) ) {
+			$followers = array( $actor );
+		} else {
+			$followers[] = $actor;
+		}
+
+		$followers = \array_unique( $followers );
+
+		\update_user_meta( $author_id, 'activitypub_followers', $followers );
+	}
+
+	public static function remove_follower( $actor, $author_id ) {
+		$followers = \get_user_option( 'activitypub_followers', $author_id );
+
+		foreach ( $followers as $key => $value ) {
+			if ( $value === $actor ) {
+				unset( $followers[ $key ] );
+			}
+		}
+
+		\update_user_meta( $author_id, 'activitypub_followers', $followers );
+	}
+}