Migrating a percentage off shipping script

Par peligroso D16. Este archivo y su pareja parecen casi idénticos y se comportan de forma distinta, así que lee los dos antes de decidir cuál tienes.

# ================================ Customizable Settings ================================
DISCOUNT_TYPE = :percent
DISCOUNT_AMOUNT = 10
DISCOUNT_MESSAGE = '10% off shipping'

# ================================ Script Code (do not edit) ================================
class DiscountApplicator
  def initialize(discount_type, discount_amount, discount_message)
    @discount_type = discount_type
    @discount_message = discount_message

    @discount_amount = if discount_type == :percent
      discount_amount * 0.01
    else
      Money.new(cents: 100) * discount_amount
    end
  end

  def apply(shipping_rate)
    discount_amount = if @discount_type == :percent
      shipping_rate.price * @discount_amount
    else
      @discount_amount > shipping_rate.price ? shipping_rate.price : @discount_amount
    end

    shipping_rate.apply_discount(discount_amount, message: @discount_message)
  end
end

class DiscountRatesCampaign
  def initialize(discount_applicator)
    @discount_applicator = discount_applicator
  end

  def run(cart, shipping_rates)
    shipping_rates.each do |shipping_rate|
      @discount_applicator.apply(shipping_rate)
    end
  end
end

CAMPAIGNS = [
  DiscountRatesCampaign.new(
    DiscountApplicator.new(DISCOUNT_TYPE, DISCOUNT_AMOUNT, DISCOUNT_MESSAGE),
  ),
]

CAMPAIGNS.each do |campaign|
  campaign.run(Input.cart, Input.shipping_rates)
end

Output.shipping_rates = Input.shipping_rates

Reconocido como Shipping discount y reconstruido como una oferta de tipo free_shipping. Estas son las claves de configuración reales con las que se guarda la oferta, así que puedes comparar tu propia reconstrucción campo por campo.

Creado en nuestra tienda de demostración pública, Meridian Goods, para que cada precio de aquí se pueda reproducir en lugar de darlo por bueno. El descuento de abajo es lo que calcula para este carrito exacto el mismo motor que se ejecuta en el pago.

This rule carries no condition at all, so it fires on any cart holding anything and there is no quiet cart to build. The negative check is an empty cart, which the app runs for you. That is correct behaviour, not a failure.