[FIX] l10n_it_edi: customer outside EU

- Create a partner outside Europe
- Set a VAT number
- Create an invoice for the partner
- Post the invoice

The `IdPaese` and `IdCodice` is obtained from the VAT number, but it is
not correct for partners outside Europe: the VAT number should always be
`OO99999999999`.

A workaround is to set the VAT number of the partner to
`XXOO99999999999`, where `XX` is the country code. However, in case of
multi-company with shared partners, another company might need the
proper VAT number.

In case of a customer outside EU, we:
- get the `IdPaese` from the country of the partner
- set the `IdCodice` to `OO99999999999`

We also add the `IdPaese` to customers without VAT.

opw-2355842

closes odoo/odoo#60404

X-original-commit: 35267c59
Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/l10n_it_edi/data/invoice_it_template.xml

@@ -107,10 +107,14 @@
                     </RappresentanteFiscale>
                     <CessionarioCommittente>
                         <DatiAnagrafici>
-                            <IdFiscaleIVA t-if="record.commercial_partner_id.vat">
+                            <IdFiscaleIVA t-if="record.commercial_partner_id.vat and in_eu(record.commercial_partner_id)">
                                 <IdPaese t-esc="get_vat_country(record.commercial_partner_id.vat)"/>
                                 <IdCodice t-esc="get_vat_number(record.commercial_partner_id.vat)"/>
                             </IdFiscaleIVA>
+                            <IdFiscaleIVA t-if="record.commercial_partner_id.vat and not in_eu(record.commercial_partner_id)">
+                                <IdPaese t-esc="record.commercial_partner_id.country_id.code"/>
+                                <IdCodice t-esc="'OO99999999999'"/>
+                            </IdFiscaleIVA>
                             <IdFiscaleIVA t-if="not record.commercial_partner_id.vat and record.commercial_partner_id.country_id.code != 'IT'">
                                 <IdCodice t-esc="'0000000'"/>
                             </IdFiscaleIVA>

addons/l10n_it_edi/models/account_invoice.py

@@ -219,6 +219,13 @@ class AccountMove(models.Model):
         def get_vat_country(vat):
             return vat[:2].upper()
 
+        def in_eu(partner):
+            europe = self.env.ref('base.europe', raise_if_not_found=False)
+            country = partner.country_id
+            if not europe or not country or country in europe.country_ids:
+                return True
+            return False
+
         formato_trasmissione = "FPR12"
         if len(self.commercial_partner_id.l10n_it_pa_index or '1') == 6:
             formato_trasmissione = "FPA12"
@@ -245,6 +252,7 @@ class AccountMove(models.Model):
             'discount_type': discount_type,
             'get_vat_number': get_vat_number,
             'get_vat_country': get_vat_country,
+            'in_eu': in_eu,
             'abs': abs,
             'formato_trasmissione': formato_trasmissione,
             'document_type': document_type,