fix (tax-integrations): apply zero tax for unknown tax exemption

app/models/invoice/applied_tax.rb

@@ -16,7 +16,7 @@ class AppliedTax < ApplicationRecord
     validates :amount_cents, numericality: {greater_than_or_equal_to: 0}
 
     TAX_CODES_APPLICABLE_ON_WHOLE_INVOICE = %w[not_collecting juris_not_taxed reverse_charge customer_exempt
-      transaction_exempt].freeze
+      transaction_exempt juris_has_no_tax unknown_taxation].freeze
 
     def applied_on_whole_invoice?
       TAX_CODES_APPLICABLE_ON_WHOLE_INVOICE.include?(tax_code)

app/services/integrations/aggregator/taxes/invoices/base_service.rb

@@ -5,7 +5,7 @@ module Aggregator
     module Taxes
       module Invoices
         class BaseService < Integrations::Aggregator::BaseService
-          SPECIAL_TAXATION_TYPES = %w[exempt notCollecting productNotTaxed jurisNotTaxed].freeze
+          SPECIAL_TAXATION_TYPES = %w[exempt notCollecting productNotTaxed jurisNotTaxed jurisHasNoTax].freeze
           def initialize(invoice:, fees: nil)
             @invoice = invoice
             @fees = fees || invoice.fees
@@ -84,13 +84,20 @@ def tax_breakdown(breakdown)
                   tax_amount: 0,
                   type: b['type']
                 )
-              else
+              elsif b['rate']
                 OpenStruct.new(
                   name: b['name'],
                   rate: b['rate'],
                   tax_amount: b['tax_amount'],
                   type: b['type']
                 )
+              else
+                OpenStruct.new(
+                  name: humanize_tax_name(b['reason'].presence || b['type'] || 'unknown_taxation'),
+                  rate: '0.00',
+                  tax_amount: 0,
+                  type: b['type'] || 'unknown_taxation'
+                )
               end
             end
           end

config/locales/de/invoice.yml

@@ -67,10 +67,12 @@ de:
     tax_name: "%{name} (%{rate}% on %{amount})"
     tax_name_only:
       customer_exempt: Der Kunde ist von der Umsatzsteuer befreit
+      juris_has_no_tax: Keine Steuer
       juris_not_taxed: Keine Steuer
       not_collecting: Keine Steuer
       reverse_charge: Reverse-Charge-Verfahren - Steuerschuldnerschaft auf den Kunden übertragen
       transaction_exempt: Der Kunde ist von der Umsatzsteuer befreit
+      unknown_taxation: Unbekannt
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Steuersatz
     taxes:

config/locales/en/invoice.yml

@@ -67,10 +67,12 @@ en:
     tax_name: "%{name} (%{rate}% on %{amount})"
     tax_name_only:
       customer_exempt: Customer is tax exempt
+      juris_has_no_tax: No tax
       juris_not_taxed: No tax
       not_collecting: No tax
       reverse_charge: Reverse charge - Tax liability shifted to customer
       transaction_exempt: Customer is tax exempt
+      unknown_taxation: Unknown
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Tax rate
     taxes:

config/locales/es/invoice.yml

@@ -66,10 +66,12 @@ es:
     tax_name: "%{name} (%{rate}% sobre %{amount})"
     tax_name_only:
       customer_exempt: El cliente está exento de impuestos
+      juris_has_no_tax: Sin impuesto
       juris_not_taxed: Sin impuesto
       not_collecting: Sin impuesto
       reverse_charge: Inversión del sujeto pasivo - Responsabilidad fiscal trasladada al cliente
       transaction_exempt: El cliente está exento de impuestos
+      unknown_taxation: Desconocido
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Tasas de impuestos
     taxes:

config/locales/fr/invoice.yml

@@ -67,10 +67,12 @@ fr:
     tax_name: "%{name} (%{rate}% sur %{amount})"
     tax_name_only:
       customer_exempt: Le client est exonéré de taxe
+      juris_has_no_tax: Taxe non applicable
       juris_not_taxed: Taxe non applicable
       not_collecting: Pas de taxe
       reverse_charge: Autoliquidation - Responsabilité fiscale transférée au client
       transaction_exempt: Le client est exonéré de taxe
+      unknown_taxation: Inconnu
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Taux de taxe
     taxes:

config/locales/it/invoice.yml

@@ -67,10 +67,12 @@ it:
     tax_name: "%{name} (%{rate}% su %{amount})"
     tax_name_only:
       customer_exempt: Il cliente è esente da tasse
+      juris_has_no_tax: Nessuna tassa
       juris_not_taxed: Nessuna tassa
       not_collecting: Nessuna tassa
       reverse_charge: Inversione contabile - Responsabilità fiscale trasferita al cliente
       transaction_exempt: Il cliente è esente da tasse
+      unknown_taxation: Sconosciuto
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Aliquota fiscale
     taxes:

config/locales/nb/invoice.yml

@@ -67,10 +67,12 @@ nb:
     tax_name: "%{name} (%{rate}% on %{amount})"
     tax_name_only:
       customer_exempt: Kunden er fritatt for avgift
+      juris_has_no_tax: Ingen skatt
       juris_not_taxed: Ingen skatt
       not_collecting: Ingen skatt
       reverse_charge: Omvendt avgiftsplikt - Skatteplikt overført til kunden
       transaction_exempt: Kunden er fritatt for avgift
+      unknown_taxation: Ukjent
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Skattesats
     taxes:

config/locales/sv/invoice.yml

@@ -66,10 +66,12 @@ sv:
     tax_name: "%{name} (%{rate}% på %{amount})"
     tax_name_only:
       customer_exempt: Kunden är befriad från moms
+      juris_has_no_tax: Ingen skatt
       juris_not_taxed: Ingen skatt
       not_collecting: Ingen skatt
       reverse_charge: Omvänd skattskyldighet - Skatteskyldighet överförd till kunden
       transaction_exempt: Kunden är befriad från moms
+      unknown_taxation: Okänd
     tax_name_with_details: "%{name} (%{rate}%)"
     tax_rate: Momssats
     taxes:

spec/services/integrations/aggregator/taxes/invoices/create_draft_service_spec.rb

@@ -150,7 +150,9 @@
             [
               {received_type: 'notCollecting', expected_name: 'Not collecting'},
               {received_type: 'productNotTaxed', expected_name: 'Product not taxed'},
-              {received_type: 'jurisNotTaxed', expected_name: 'Juris not taxed'}
+              {received_type: 'jurisNotTaxed', expected_name: 'Juris not taxed'},
+              {received_type: 'jurisHasNoTax', expected_name: 'Juris has no tax'},
+              {received_type: 'specialUnknownRule', expected_name: 'Special unknown rule'}
             ]
 
           special_rules.each do |specific_rule|