Trigger Actor updates on (un)setting a post as sticky. (#1982)

Author: pfefferle

.github/changelog/1982-from-description

@@ -0,0 +1,4 @@
+Significance: minor
+Type: added
+
+Trigger Actor updates on (un)setting a post as sticky.

includes/scheduler/class-actor.php

@@ -48,6 +48,9 @@ public static function init() {
 		\add_action( 'update_option_activitypub_actor_mode', array( self::class, 'blog_user_update' ) );
 
 		\add_action( 'transition_post_status', array( self::class, 'schedule_post_activity' ), 33, 3 );
+
+		\add_action( 'post_stuck', array( self::class, 'sticky_post_update' ) );
+		\add_action( 'post_unstuck', array( self::class, 'sticky_post_update' ) );
 	}
 
 	/**
@@ -143,4 +146,19 @@ public static function schedule_profile_update( $user_id ) {
 
 		add_to_outbox( $actor, 'Update', $user_id );
 	}
+
+	/**
+	 * Detect sticky posts update.
+	 *
+	 * @param int $post_id The post ID.
+	 */
+	public static function sticky_post_update( $post_id ) {
+		$post = \get_post( $post_id );
+
+		if ( ! $post ) {
+			return;
+		}
+
+		self::schedule_profile_update( $post->post_author );
+	}
 }

tests/includes/scheduler/class-test-actor.php

@@ -9,6 +9,7 @@
 
 use Activitypub\Collection\Actors;
 use Activitypub\Collection\Extra_Fields;
+use Activitypub\Collection\Outbox;
 use Activitypub\Scheduler\Actor;
 
 /**
@@ -320,4 +321,34 @@ public function test_actor_profile_update_sets_updated_attribute() {
 		// Verify the updated attribute is set and matches the post's modified date.
 		$this->assertEqualsWithDelta( strtotime( $post->post_modified ), strtotime( $activity['updated'] ), 2, 'Updated attribute does not match post modified date.' );
 	}
+
+	/**
+	 * Test that sticky posts are detected.
+	 *
+	 * @covers ::sticky_post_update
+	 */
+	public function test_sticky_post_update() {
+		$user_id = self::factory()->user->create( array( 'role' => 'author' ) );
+
+		$last_item = $this->get_latest_outbox_item();
+
+		$this->assertNull( $last_item );
+
+		$post_id = self::factory()->post->create( array( 'post_author' => $user_id ) );
+		\stick_post( $post_id );
+
+		$last_item_stick = $this->get_latest_outbox_item();
+
+		$this->assertNotNull( $last_item_stick );
+
+		\unstick_post( $post_id );
+
+		$last_item_unstick = $this->get_latest_outbox_item();
+
+		$this->assertNotEquals( $last_item_stick->ID, $last_item_unstick->ID );
+		$this->assertEquals( $last_item_stick->post_author, $last_item_unstick->post_author );
+
+		\wp_delete_post( $post_id );
+		\wp_delete_user( $user_id );
+	}
 }