From 3feef1e8cf89181d8273a1a53ee6c342cb0fe740 Mon Sep 17 00:00:00 2001
From: Matthias Pfefferle <pfefferle@users.noreply.github.com>
Date: Thu, 25 May 2023 13:55:18 +0200
Subject: [PATCH] send user and blog activities

and set the blog to "single-mode"
---
 activitypub.php                        |  1 +
 includes/class-activity-dispatcher.php | 25 +++++++++++++++++++++++--
 includes/functions.php                 |  9 +++++++++
 3 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/activitypub.php b/activitypub.php
index 81639b8..7bc4306 100644
--- a/activitypub.php
+++ b/activitypub.php
@@ -28,6 +28,7 @@ function init() {
 	\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]" );
 	\defined( 'ACTIVITYPUB_SECURE_MODE' ) || \define( 'ACTIVITYPUB_SECURE_MODE', apply_filters( 'activitypub_secure_mode', $value = false ) );
+	\defined( 'ACTIVITYPUB_SINGLE_USER_MODE' ) || \define( 'ACTIVITYPUB_SINGLE_USER_MODE', false );
 
 	\define( 'ACTIVITYPUB_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
 	\define( 'ACTIVITYPUB_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );
diff --git a/includes/class-activity-dispatcher.php b/includes/class-activity-dispatcher.php
index ee435a7..811f923 100644
--- a/includes/class-activity-dispatcher.php
+++ b/includes/class-activity-dispatcher.php
@@ -3,6 +3,7 @@ namespace Activitypub;
 
 use Activitypub\Model\Post;
 use Activitypub\Model\Activity;
+use Activitypub\User_Factory;
 use Activitypub\Collection\Followers;
 
 use function Activitypub\safe_remote_post;
@@ -66,12 +67,32 @@ class Activity_Dispatcher {
 		// check if a migration is needed before sending new posts
 		Migration::maybe_migrate();
 
-		// get latest version of post
-		$user_id = $activitypub_post->get_post_author();
+		if ( ! is_single_user_mode() ) {
+			// send User-Activity
+			self::send_user_activity( $activitypub_post, $activity_type );
+		}
+
+		// send Blog-User-Activity
+		self::send_user_activity( $activitypub_post, $activity_type, User_Factory::BLOG_USER_ID );
+	}
+
+	public static function send_user_activity( Post $activitypub_post, $activity_type, $user_id = null ) {
+		if ( $user_id ) {
+			$user  = User_Factory::get_by_id( $user_id );
+			$actor = $user->get_url();
+		} else {
+			// get latest version of post
+			$user_id = $activitypub_post->get_post_author();
+			$actor   = null;
+		}
 
 		$activitypub_activity = new Activity( $activity_type );
 		$activitypub_activity->from_post( $activitypub_post );
 
+		if ( $actor ) {
+			$activitypub_activity->set_actor( $actor );
+		}
+
 		$follower_inboxes = Followers::get_inboxes( $user_id );
 		$mentioned_inboxes = Mention::get_inboxes( $activitypub_activity->get_cc() );
 
diff --git a/includes/functions.php b/includes/functions.php
index 8811d9b..1f25e04 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -267,3 +267,12 @@ function is_activitypub_request() {
 
 	return false;
 }
+
+/**
+ * Check if the current site is in single-user mode.
+ *
+ * @return boolean
+ */
+function is_single_user_mode() {
+	return ACTIVITYPUB_SINGLE_USER_MODE;
+}