[IMP] account_edi_ubl_cii: add TaxCurrencyCode

refactor TaxCurrencyCode as it is supposed to belong ignored
ubl 2.0 according to the documentation
http://www.datypic.com/sc/ubl20/t-ns19_InvoiceType.html

this also allows future EDI that needs this node so that
they won't need to create their own template

Task-id: 3388222
Part-of: odoo/odoo#130617

addons/account_edi_ubl_cii/data/ubl_20_templates.xml

@@ -277,6 +277,9 @@
             <cbc:DocumentCurrencyCode
                     t-att="vals.get('document_currency_code_attrs', {})"
                     t-out="invoice.currency_id.name.upper()"/>
+            <cbc:TaxCurrencyCode
+                    t-att="vals.get('tax_currency_code_attrs', {})"
+                    t-out="vals.get('tax_currency_code')"/>
             <t t-foreach="vals.get('invoice_period_vals_list', [])" t-as="foreach_vals">
                 <cac:InvoicePeriod>
                     <cbc:StartDate t-out="foreach_vals.get('start_date')"/>

addons/account_edi_ubl_cii/data/ubl_21_templates.xml

@@ -38,7 +38,7 @@
                     t-out="vals.get('credit_note_type_code')"
             />
         </xpath>
-        <xpath expr="//*[local-name()='DocumentCurrencyCode']" position="after">
+        <xpath expr="//*[local-name()='TaxCurrencyCode']" position="after">
             <cbc:BuyerReference
                     xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
                     xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"

addons/l10n_sa_edi/data/ubl_21_zatca.xml

@@ -240,13 +240,6 @@
                 </t>
             </xpath>
 
-            <!-- Add Tax Currency Code in compliance with rules BR-KSA-EN16931-02 and BR-KSA-68 -->
-            <xpath expr="//*[local-name()='DocumentCurrencyCode']" position="after">
-                <cbc:TaxCurrencyCode xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2"
-                                     xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
-                                     t-esc="invoice.company_currency_id.name"/>
-            </xpath>
-
             <!-- Add Previous Invoice Hash & Invoice Counter Value -->
             <xpath expr="//*[local-name()='BillingReference']" position="after">
                 <t xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"

addons/l10n_sa_edi/models/account_edi_xml_ubl_21_zatca.py

@@ -259,6 +259,7 @@ class AccountEdiXmlUBL21Zatca(models.AbstractModel):
             'profile_id': 'reporting:1.0',
             'invoice_type_code_attrs': {'name': self._l10n_sa_get_invoice_transaction_code(invoice)},
             'invoice_type_code': self._l10n_sa_get_invoice_type(invoice),
+            'tax_currency_code': invoice.company_currency_id.name,
             'issue_date': fields.Datetime.context_timestamp(self.with_context(tz='Asia/Riyadh'),
                                                             invoice.l10n_sa_confirmation_datetime),
             'previous_invoice_hash': self._l10n_sa_get_previous_invoice_hash(invoice),