module CorreiosApi
  class ShippingQuotes
    attr_reader :rates
    def initialize rates
      @rates = rates
    end

    def cheaper_rate
      valid_rates.min_by(&:price)
    end

    def faster_rate
      valid_rates.min_by(&:delivery_time_in_days)
    end

    def valid_rates
      @rates.select { |rate| rate.price > 0 && rate.errors.empty? }
    end
  end
end