openfoodnetwork/app/services/orders/fetch_tax_adjustments_service.rb

# frozen_string_literal: true

# Collects Tax Adjustments related to an order, and returns a hash with a total for each rate.

module Orders
  class FetchTaxAdjustmentsService
    def initialize(order)
      @order = order
    end

    def totals(tax_adjustments = order.all_adjustments.tax)
      tax_adjustments.each_with_object({}) do |adjustment, hash|
        tax_rate = adjustment.originator
        hash[tax_rate] = hash[tax_rate].to_f + adjustment.amount
      end
    end

    private

    attr_reader :order
  end
end