sale_down_payment: auto-reconcile when validating invoice

sale_down_payment/models/account_invoice.py

@@ -0,0 +1,27 @@
+# Copyright 2023 Akretion France (http://www.akretion.com)
+# @author Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class AccountInvoice(models.Model):
+    _inherit = 'account.invoice'
+
+    @api.multi
+    def action_invoice_open(self):
+        res = super().action_invoice_open()
+        amlo = self.env['account.move.line']
+        for inv in self:
+            if inv.state == 'open' and inv.type == 'out_invoice':
+                sales = inv.invoice_line_ids.mapped('sale_line_ids').\
+                    mapped('order_id')
+                if sales:
+                    mlines = amlo.search([('sale_id', 'in', sales.ids)])
+                    if mlines:
+                        receivable_lines = inv.move_id.mapped('line_ids').filtered(
+                            lambda l: l.account_id == inv.account_id)
+                        mlines |= receivable_lines
+                        mlines.remove_move_reconcile()
+                        mlines.reconcile()
+        return res