Class: Effective::TaxRateCalculator

Inherits:
Object
  • Object
show all
Defined in:
app/models/effective/tax_rate_calculator.rb

Constant Summary collapse

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' => 15.0,   # Prince Edward Island
    'QC' => 5.00,   # Quebec
    'SK' => 5.00,   # Saskatchewan
    'YT' => 5.00,   # Yukon Territory
    'NU' => 5.00    # Nunavut
  }
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(order: nil, country_code: nil, state_code: nil) ⇒ TaxRateCalculator

Returns a new instance of TaxRateCalculator.



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# File 'app/models/effective/tax_rate_calculator.rb', line 23

def initialize(order: nil, country_code: nil, state_code: nil)
  @order = order
  @country_code = country_code
  @state_code = state_code
end

Instance Attribute Details

#country_code ⇒ Object (readonly)

Returns the value of attribute country_code.



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# File 'app/models/effective/tax_rate_calculator.rb', line 3

def country_code
  @country_code
end

#order ⇒ Object (readonly)

Returns the value of attribute order.



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# File 'app/models/effective/tax_rate_calculator.rb', line 3

def order
  @order
end

#state_code ⇒ Object (readonly)

Returns the value of attribute state_code.



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# File 'app/models/effective/tax_rate_calculator.rb', line 3

def state_code
  @state_code
end

Instance Method Details

#tax_rate ⇒ Object 



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# File 'app/models/effective/tax_rate_calculator.rb', line 29

def tax_rate
  country = country_code
  state = state_code

  if order.present?
    country ||= order.billing_address.try(:country_code)
    country ||= order.organization.try(:billing_address).try(:country_code)
    country ||= order.user.try(:billing_address).try(:country_code)

    state ||= order.billing_address.try(:state_code)
    state ||= order.organization.try(:billing_address).try(:state_code)
    state ||= order.user.try(:billing_address).try(:state_code)
  end

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

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

#unknown_tax_rate ⇒ Object 



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# File 'app/models/effective/tax_rate_calculator.rb', line 50

def unknown_tax_rate
  (order && order.skip_buyer_validations?) ? nil : 0
end