[site-reviews] set post_author of review to first assigned user

/**
 * This will change the post_author of a review to the first assigned user.
 * This hook is triggered immediately after the review is created but before the reviews details are saved.
 * Note: This will also trigger a post revision.
 * @param int $postId
 * @param \GeminiLabs\SiteReviews\Commands\CreateReview $command
 * @return void
 */
add_action('site-reviews/review/create', function ($postId, $command) {
    $userId = glsr_get($command->assigned_users, 0); // get the first user ID from the assigned_users array
    if (get_user_by('id', $userId)) { // make sure the user exists
        wp_update_post([
            'ID' => $postId,
            'post_author' => $userId,
        ]);
    }
}, 10, 2);