{ "rules_auto_add_shipping_service" : {
    "LABEL" : "Auto-add shipping service",
    "PLUGIN" : "reaction rule",
    "REQUIRES" : [ "rules", "commerce_shipping", "entity" ],
    "ON" : [ "commerce_order_update" ],
    "IF" : [
      { "data_is" : { "data" : [ "commerce-order:status" ], "value" : "checkout_review" } },
      { "data_is" : { "data" : [ "commerce-order:type" ], "value" : "commerce_order" } },
      { "NOT commerce_shipping_compare_shipping_service" : { "commerce_order" : [ "commerce_order" ], "service" : "-any-" } },
      { "NOT data_is_empty" : { "data" : [ "commerce-order:commerce-customer-shipping" ] } }
    ],
    "DO" : [
      { "commerce_shipping_method_collect_rates" : {
          "shipping_method_name" : "flat_rate",
          "commerce_order" : [ "commerce_order" ]
        }
      },
      { "commerce_shipping_rate_apply" : {
          "commerce_order" : [ "commerce_order" ],
          "shipping_service_name" : [ "" ]
        }
      }
    ]
  }
}