19.0 vanilla

odoo-bringout-oca-ocb-l10n_si/l10n_si/models/account_move.py

@@ -0,0 +1,55 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import re
+
+from odoo import models
+
+
+class AccountMove(models.Model):
+    _inherit = 'account.move'
+
+    def _get_invoice_reference_si_partner(self):
+        """
+        Generate the Slovenian structured payment reference using the partner's ID.
+        Format: SI01 (P1-P2-P3)K
+        - P1: Last two digits of the invoice year
+        - P2: Partner ID
+        - P3: Journal ID
+        - K: Check digit
+
+        :return: the formatted structured reference string (SI01...)
+        """
+        self.ensure_one()
+        p3 = str(self.partner_id.id)
+        return self._build_invoice_reference(p3)
+
+    def _get_invoice_reference_si_invoice(self):
+        """
+        Generate the Slovenian structured payment reference using the invoice sequence number.
+
+        Format: SI01 (P1-P2-P3)K
+        - P1: Last two digits of the invoice year
+        - P2: Trailing digits of the invoice name (sequence number)
+        - P3: Journal ID
+        - K: Check digit
+
+        :return: the formatted structured reference string (SI01...)
+        """
+        self.ensure_one()
+        match = re.search(r'(\d+)$', self.name or '')
+        p3 = str(int(match.group(1))) if match else '0'
+        return self._build_invoice_reference(p3)
+
+    def _build_invoice_reference(self, p3):
+        """Builds the reference using a shared structure for both methods."""
+        p1 = str(self.journal_id.id)
+        p2 = str(self.invoice_date.year)[-2:]
+        reference_base = f"{p1}-{p2}-{p3}"
+
+        # Calculate check digit
+        digits = [int(d) for d in reference_base if d.isdigit()]
+        weights = list(range(2, 14))[:len(digits)]
+        weighted_sum = sum(d * w for d, w in zip(reversed(digits), weights))
+        check_digit = 11 - (weighted_sum % 11)
+        check_digit = 0 if check_digit in (10, 11) else check_digit
+        return f"SI01 {reference_base}{check_digit}"