19.0 vanilla

odoo-bringout-oca-ocb-l10n_au/l10n_au/models/account_move.py

@@ -6,6 +6,26 @@ class AccountMove(models.Model):
     _inherit = 'account.move'
 
     def _get_name_invoice_report(self):
-        if self.company_id.account_fiscal_country_id.code == 'AU':
+        if self.company_id.account_fiscal_country_id.code == 'AU' and self.company_id.l10n_au_is_gst_registered:
             return 'l10n_au.report_invoice_document'
         return super()._get_name_invoice_report()
+
+    def _get_automatic_balancing_account(self):
+        """ Override to manage the DGST use case.
+        We want the automatic line to balance the DGST account to itself, as we only want the tax lines to have a real
+        impact.
+        """
+        # OVERRIDE account
+        self.ensure_one()
+
+        # We only consider moves comprised of a single DGST line. (one invoice line, one tax)
+        has_single_line = len(self.invoice_line_ids) == 1 and len(self.invoice_line_ids.tax_ids) == 1
+        if has_single_line and self.move_type == 'entry':
+            # We identify that it is DGST based on a tag on the account.
+            # This is the simplest solution to keep it configurable while avoiding a new setting for a niche feature.
+            # At worse, they don't get the correct account assigned automatically and need manual adjustment.
+            with_dgst_account = self.invoice_line_ids.account_id.tag_ids == self.env.ref("l10n_au.account_tag_dgst")
+            if with_dgst_account:
+                # In this case, we want the balancing line to balance IN THE SAME ACCOUNT.
+                return self.invoice_line_ids.account_id.id
+        return super()._get_automatic_balancing_account()