add_action('wp_trash_post', 'delete_relationships_on_trashed_product', 101, 2);
function delete_relationships_on_trashed_product($post_id, $previous_status) {
    // Get the post object based on the post ID
    $post = get_post($post_id);
  
    // Ensure we have a valid post object and that it is of type 'product'
    if ($post && $post->post_type === 'product') {
        // Define the relationship slugs to check
        $relationship_slugs = ['post-product', 'post-product-2', 'post-product-3'];
  
        // Loop through each relationship slug and handle the disconnection
        foreach ($relationship_slugs as $relationship_slug) {
            // Get all intermediary posts related to this product for the current relationship slug
            $related_intermediary_posts = toolset_get_related_posts(
                $post_id, // ID of the post to get relationships from
                $relationship_slug, // Relationship slug
                'child', // Role of $post_id in this relationship
                -1, // Limit to get all related posts
                0, // Offset
                [], // Additional arguments
                'post_id', // Return type, we want the post IDs
                'parent' // We want to get the parent posts related to this child
            );
  
            // Loop through each intermediary post and delete the relationship
            if (!empty($related_intermediary_posts)) {
                foreach ($related_intermediary_posts as $intermediary_post_id) {
                    // Disconnect the intermediary post
                    $disconnect_result = toolset_disconnect_posts($relationship_slug, $intermediary_post_id, $post_id);
 
                    // After disconnecting, ensure the parent post remains published
                    // Get the parent post object
                    $parent_post = get_post($intermediary_post_id);
                     
                    // Check if the post status is not 'publish' and update it to 'publish'
                    if ($parent_post && $parent_post->post_status !== 'publish') {
                        wp_update_post([
                            'ID' => $parent_post->ID,
                            'post_status' => 'publish'
                        ]);
                    }
                }
            }
        }
    }
}