[IMP] l10n_ar_sale: calculate dates for billing in arrears

Author: lav-adhoc

l10n_ar_sale/__manifest__.py

@@ -1,6 +1,6 @@
 {
     "name": "Argentinian Sale Total Fields",
-    "version": "18.0.1.2.0",
+    "version": "18.0.1.4.0",
     "category": "Localization/Argentina",
     "sequence": 14,
     "author": "ADHOC SA",

l10n_ar_sale/models/__init__.py

@@ -4,3 +4,4 @@
 ##############################################################################
 from . import sale_order
 from . import sale_order_line
+from . import account_move

l10n_ar_sale/models/account_move.py

@@ -0,0 +1,15 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from odoo import models
+
+
+class AccountMove(models.Model):
+    _inherit = "account.move"
+
+    def _set_afip_service_dates(self):
+        super(AccountMove, self)._set_afip_service_dates()
+        if self.env["sale.order"].is_module_installed("sale_subscription_ux"):
+            for rec in self.filtered(lambda m: m.invoice_date and m.l10n_ar_afip_concept in ["2", "3", "4"]):
+                so = rec.invoice_line_ids[0].sale_line_ids.order_id or False
+                if so and so.plan_id.bill_end_period:
+                    rec.l10n_ar_afip_service_start = rec.l10n_ar_afip_service_start - so.plan_id.billing_period
+                    rec.l10n_ar_afip_service_end = rec.l10n_ar_afip_service_end - so.plan_id.billing_period