// ... (بخش‌های register_routes و validate_api_key بدون تغییر)

    // ... (متد check_connection بدون تغییر)

    /**
     * EndPoint دریافت و ذخیره محصول همگام‌سازی شده
     */
    public function sync_product( $request ) {
        if ( ! class_exists( 'WC_Product_Simple' ) ) {
            return new WP_REST_Response( array( 'message' => 'WooCommerce is not active' ), 500 );
        }
        
        $data = $request->get_json_params();
        $hub_product_id = $data['hub_product_id']; 
        
        if ( empty( $hub_product_id ) ) {
            return new WP_REST_Response( array( 'message' => 'Hub Product ID is required' ), 400 );
        }

        $product_id = $this->get_client_product_id_by_hub_id( $hub_product_id );

        if ( $product_id ) {
            $product = wc_get_product( $product_id );
            if ( ! $product ) {
                $product = new WC_Product_Simple(); 
            }
        } else {
            $product = new WC_Product_Simple();
        }

        $product->set_name( sanitize_text_field( $data['name'] ) );
        $product->set_regular_price( floatval( $data['price'] ) );
        $product->set_price( floatval( $data['price'] ) ); 
        $product->set_description( wp_kses_post( $data['description'] ) );
        $product->set_status( 'publish' ); 

        $product_id = $product->save();
        
        if ( $product_id ) {
            update_post_meta( $product_id, '_addup_hub_product_id', $hub_product_id );
        }

        return new WP_REST_Response( array( 
            'message' => 'Product sync successful', 
            'hub_id' => $hub_product_id,
            'client_id' => $product_id
        ), 200 );
    }

    private function get_client_product_id_by_hub_id( $hub_product_id ) {
        global $wpdb;
        $product_id = $wpdb->get_var( $wpdb->prepare( 
            "SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key = %s AND meta_value = %s",
            '_addup_hub_product_id', 
            $hub_product_id
        ) );
        return $product_id;
    }

    // ... (بقیه متد update_order_status بدون تغییر)