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modules/edocument_peppol/account.py

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+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.i18n import gettext
+from trytond.model import fields
+from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Eval
+
+from .exceptions import InvoicePeppolRequired
+
+
+class Invoice(metaclass=PoolMeta):
+    __name__ = 'account.invoice'
+
+    peppol = fields.One2Many(
+        'edocument.peppol', 'invoice', "Peppol", readonly=True,
+        states={
+            'invisible': ~Eval('peppol', []),
+            })
+
+    @property
+    def peppol_required(self):
+        def is_be_vat(identifier):
+            return (identifier
+                and (identifier.type == 'be_vat'
+                    or (identifier.type == 'eu_vat'
+                        and identifier.code.startswith('BE'))))
+        if (self.invoice_date
+                and self.invoice_date.year >= 2026
+                and is_be_vat(self.tax_identifier)
+                and is_be_vat(self.party_tax_identifier)):
+            return True
+        return False
+
+    @classmethod
+    def _post(cls, invoices):
+        pool = Pool()
+        Peppol = pool.get('edocument.peppol')
+        Warning = pool.get('res.user.warning')
+        posted_invoices = {
+            i for i in invoices if i.state in {'draft', 'validated'}}
+        super()._post(invoices)
+        peppol = []
+        for invoice in posted_invoices:
+            if invoice.type != 'out':
+                continue
+            peppol_types = invoice.party.get_multivalue(
+                'peppol_types', company=invoice.company.id)
+            if peppol_types and 'bis-billing-3' in peppol_types:
+                peppol.append(Peppol(
+                        direction='out',
+                        company=invoice.company,
+                        type='bis-billing-3',
+                        invoice=invoice))
+            elif invoice.peppol_required:
+                warning_key = Warning.format(
+                    'invoice_peppol_required', [
+                        invoice.party, invoice.company])
+                if Warning.check(warning_key):
+                    raise InvoicePeppolRequired(warning_key, gettext(
+                            'edocument_peppol'
+                            '.msg_invoice_party_peppol_required',
+                            party=invoice.party.rec_name,
+                            invoice=invoice.rec_name))
+        if peppol:
+            Peppol.save(peppol)
+            Peppol.submit(peppol)