fix (integration-customers): adapt integration customer queries (#2269)

## Context

Improve integration customer queries

## Description

Currently Accounting integrations, Netsuite and Xero, are supported in
Lago but tax integration Anrok is currently being implemented.

This PR improves existing integration customers queries. Customer can
have attached ONLY one accounting integration and ONLY one tax
integration, but we want to avoid case that tax integration customer is
returned in accounting context.

app/graphql/types/credit_notes/object.rb

@@ -58,7 +58,7 @@ def integration_syncable
  end
 
  def external_integration_id
- integration_customer = object.customer&.integration_customers&.first
+ integration_customer = object.customer&.integration_customers&.accounting_kind&.first
 
  return nil unless integration_customer
 

app/graphql/types/invoices/object.rb

@@ -66,7 +66,7 @@ def integration_syncable
  end
 
  def external_integration_id
- integration_customer = object.customer&.integration_customers&.first
+ integration_customer = object.customer&.integration_customers&.accounting_kind&.first
 
  return nil unless integration_customer
 

app/models/credit_note.rb

@@ -106,7 +106,7 @@ def add_on_items
  end
 
  def should_sync_credit_note?
- finalized? && customer.integration_customers.any? { |c| c.integration.sync_credit_notes }
+ finalized? && customer.integration_customers.accounting_kind.any? { |c| c.integration.sync_credit_notes }
  end
 
  def voidable?

app/models/integration_customers/base_customer.rb

@@ -12,6 +12,10 @@ class BaseCustomer < ApplicationRecord
 
  validates :customer_id, uniqueness: {scope: :type}
 
+ scope :accounting_kind, -> do
+ where(type: %w[IntegrationCustomers::NetsuiteCustomer IntegrationCustomers::XeroCustomer])
+ end
+
  settings_accessors :sync_with_provider
 
  def self.customer_type(type)

app/models/invoice.rb

@@ -279,11 +279,11 @@ def mark_as_dispute_lost!(timestamp = Time.current)
  end
 
  def should_sync_invoice?
- finalized? && customer.integration_customers.any? { |c| c.integration.sync_invoices }
+ finalized? && customer.integration_customers.accounting_kind.any? { |c| c.integration.sync_invoices }
  end
 
  def should_sync_sales_order?
- finalized? && customer.integration_customers.any? { |c| c.integration.sync_sales_orders }
+ finalized? && customer.integration_customers.accounting_kind.any? { |c| c.integration.sync_sales_orders }
  end
 
  private

app/models/payment.rb

@@ -13,6 +13,6 @@ class Payment < ApplicationRecord
  delegate :customer, to: :invoice
 
  def should_sync_payment?
- invoice.finalized? && customer.integration_customers.any? { |c| c.integration.sync_payments }
+ invoice.finalized? && customer.integration_customers.accounting_kind.any? { |c| c.integration.sync_payments }
  end
 end

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

@@ -31,7 +31,7 @@ def integration
  end
 
  def integration_customer
- @integration_customer ||= customer&.integration_customers&.first
+ @integration_customer ||= customer&.integration_customers&.accounting_kind&.first
  end
 
  def payload(type)