[IMP] account_edi_ubl_cii: add Singapore Bis 3 format

Add a new edi_format "SG BIS Billing 3.0" available for SG companies.
This format is based on BIS Billing 3.0.

task-3180983

closes odoo/odoo#115147

Signed-off-by: Laurent Smet <las@odoo.com>

addons/account_edi_ubl_cii/models/__init__.py

@@ -9,6 +9,7 @@ from . import account_edi_xml_ubl_xrechnung
 from . import account_edi_xml_ubl_nlcius
 from . import account_edi_xml_ubl_efff
 from . import account_edi_xml_ubl_a_nz
+from . import account_edi_xml_ubl_sg
 from . import account_move_send
 from . import account_move
 from . import account_journal

addons/account_edi_ubl_cii/models/account_edi_xml_ubl_sg.py

@@ -0,0 +1,75 @@
+# -*- coding: utf-8 -*-
+from odoo import models
+
+
+class AccountEdiXmlUBLSG(models.AbstractModel):
+    _inherit = "account.edi.xml.ubl_bis3"
+    _name = "account.edi.xml.ubl_sg"
+    _description = "SG BIS Billing 3.0"
+
+    """
+    Documentation: https://www.peppolguide.sg/billing/bis/
+    """
+
+    # -------------------------------------------------------------------------
+    # EXPORT
+    # -------------------------------------------------------------------------
+
+    def _export_invoice_filename(self, invoice):
+        return f"{invoice.name.replace('/', '_')}_sg.xml"
+
+    def _export_invoice_ecosio_schematrons(self):
+        return {
+            'invoice': 'eu.peppol.bis3.sg.ubl:invoice:1.0.3',
+            'credit_note': 'eu.peppol.bis3.sg.ubl:creditnote:1.0.3',
+        }
+
+    def _get_partner_party_vals(self, partner, role):
+        # EXTENDS account.edi.xml.ubl_bis3
+        vals = super()._get_partner_party_vals(partner, role)
+
+        for party_tax_scheme in vals['party_tax_scheme_vals']:
+            party_tax_scheme['tax_scheme_id'] = 'GST'
+
+        return vals
+
+    def _get_invoice_payment_means_vals_list(self, invoice):
+        """ https://www.peppolguide.sg/billing/bis/#_payment_means_information
+        """
+        vals_list = super()._get_invoice_payment_means_vals_list(invoice)
+        for vals in vals_list:
+            vals.update({
+                'payment_means_code': 54,
+                'payment_means_code_attrs': {'name': 'Credit Card'},
+            })
+
+        return vals_list
+
+    def _get_tax_sg_codes(self, invoice, tax):
+        """ https://www.peppolguide.sg/billing/bis/#_gst_category_codes
+        """
+        tax_category_code = 'SR'
+        if tax.amount == 0:
+            tax_category_code = 'ZR'
+        return tax_category_code
+
+    def _get_tax_category_list(self, invoice, taxes):
+        # OVERRIDE
+        res = []
+        for tax in taxes:
+            res.append({
+                'id': self._get_tax_sg_codes(invoice, tax),
+                'percent': tax.amount if tax.amount_type == 'percent' else False,
+                'tax_scheme_id': 'GST',
+            })
+        return res
+
+    def _export_invoice_vals(self, invoice):
+        # EXTENDS account.edi.xml.ubl_bis3
+        vals = super()._export_invoice_vals(invoice)
+
+        vals['vals'].update({
+            'customization_id': 'urn:cen.eu:en16931:2017#conformant#urn:fdc:peppol.eu:2017:poacc:billing:international:sg:3.0',
+        })
+
+        return vals

addons/account_edi_ubl_cii/models/account_journal.py

@@ -39,5 +39,7 @@ class AccountJournal(models.Model):
             return self.env['account.edi.xml.ubl_a_nz'], {}
         if self.country_code == 'NL':
             return self.env['account.edi.xml.ubl_nl'], {}
+        if self.country_code == 'SG':
+            return self.env['account.edi.xml.ubl_sg'], {}
         if self.country_code in COUNTRY_EAS:
             return self.env['account.edi.xml.ubl_bis3'], {}