Contents

module Effective
  class TaxRateCalculator
    attr_reader :order

    RATES = {
      'CA' => {         # Canada
        'AB' => 5.00,   # Alberta
        'BC' => 5.00,   # British Columbia
        'MB' => 5.00,   # Manitoba
        'NB' => 15.0,   # New Brunswick
        'NL' => 15.0,   # Newfoundland and Labrador
        'NT' => 5.00,   # Northwest Territories
        'NS' => 15.0,   # Nova Scotia
        'ON' => 13.0,   # Ontario
        'PE' => 14.0,   # Prince Edward Island
        'QC' => 5.00,   # Quebec
        'SK' => 5.00,   # Saskatchewan
        'YT' => 5.00,   # Yukon Territory
        'NU' => 5.00    # Nunavut
      }
    }

    def initialize(order:)
      @order = order
    end

    def tax_rate
      return nil unless order.billing_address.try(:country_code).present?

      country = order.billing_address.country_code
      state = order.billing_address.state_code

      rate = RATES[country]
      return rate if rate.kind_of?(Numeric)
      return unknown_tax_rate() if rate.nil?

      rate[state].presence || unknown_tax_rate()
    end

    def unknown_tax_rate
      order.skip_buyer_validations? ? nil : 0
    end

  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
effective_orders-2.1.16	app/models/effective/tax_rate_calculator.rb
effective_orders-2.1.15	app/models/effective/tax_rate_calculator.rb