class SetShipmentService
  attr_accessor :service_name, :city_code, :q

  def initialize(args = nil)
    @service_name = args[:service_name]
    @city_code = args[:city_code]
    @q = args[:q]
  end

  def get_point
    set_service(:get_point, service_name, q)
  end

  def calculation
    set_service(:calculation, service_name, q)
  end

  def list_cities
    set_service(:list_cities, service_name, q)
  end

  def show_on_map
    set_service(:show_on_map, service_name, q, city_code)
  end

  def get_zip_code
    set_service(:get_zip_code, service_name, q)
  end

  def express_delivery_cities
    set_service(:express_delivery_cities, service_name, q)
  end

  def express
    set_service(:express, service_name, q)
  end

  private def set_service(meth, name, parametres = nil, params = nil)
    case name
    when "boxberry"
      ShipmentService::Boxberry.new(parametres).try(meth)
    when "cdek"
      ShipmentService::Sdek.new(parametres, params).try(meth)
    end
  end
end