[FIX] account: match exact amount when text/partner check fails

Create a reconciliation model as follows:
- Type: Rule to match invoices/bills
- Match Invoice/bill with Label: False
- Match Invoice/bill with Note: False
- Match Invoice/bill with Reference: False
- Partner is set: False
Create an invoice for $900 and confirm it.
Create a bank statement line for $900, with no partner set.
Go to reconcile the bank statement line.

Issue: The invoice is not automatically suggested

This occurs because there is no check for the exact amount as in
previous version

opw-3648260

closes odoo/odoo#148171

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

addons/account/models/account_reconcile_model.py

@@ -814,19 +814,27 @@ class AccountReconcileModel(models.Model):
                 }
 
         # Search without any matching based on textual information.
-        if partner:
+        if self.matching_order == 'new_first':
+            order = 'date_maturity DESC, date DESC, id DESC'
+        else:
+            order = 'date_maturity ASC, date ASC, id ASC'
 
-            if self.matching_order == 'new_first':
-                order = 'date_maturity DESC, date DESC, id DESC'
+        if not partner:
+            st_line_currency = st_line.foreign_currency_id or st_line.journal_id.currency_id or st_line.company_currency_id
+            if st_line_currency == self.company_id.currency_id:
+                aml_amount_field = 'amount_residual'
             else:
-                order = 'date_maturity ASC, date ASC, id ASC'
-
-            amls = self.env['account.move.line'].search(aml_domain, order=order)
-            if amls:
-                return {
-                    'allow_auto_reconcile': False,
-                    'amls': amls,
-                }
+                aml_amount_field = 'amount_residual_currency'
+            aml_domain += [
+                ('currency_id', '=', st_line_currency.id),
+                (aml_amount_field, '=', -st_line.amount_residual),
+            ]
+        amls = self.env['account.move.line'].search(aml_domain, order=order)
+        if amls:
+            return {
+                'allow_auto_reconcile': False,
+                'amls': amls,
+            }
 
     def _get_invoice_matching_rules_map(self):
         """ Get a mapping <priority_order, rule> that could be overridden in others modules.

addons/account/tests/test_reconciliation_matching_rules.py

@@ -1131,3 +1131,40 @@ class TestReconciliationMatchingRules(AccountTestInvoicingCommon):
             rule._apply_rules(st_line, None),
             {'amls': term_lines, 'model': rule},
         )
+
+    def test_amount_check_amount_last(self):
+        """ In case the reconciliation model can't match via text or partner matching
+        we do a last check to find amls with the exact amount
+        """
+        self.rule_1.write({
+            'match_text_location_label': False,
+            'match_partner': False,
+            'match_partner_ids': [Command.clear()],
+        })
+        self.bank_line_1.partner_id = None
+        self.bank_line_1.payment_ref = False
+
+        self._check_statement_matching(self.rule_1, {
+            self.bank_line_1: {
+                'amls': self.invoice_line_1,
+                'model': self.rule_1,
+            },
+        })
+
+        # Create bank statement in foreign currency
+        partner = self.env['res.partner'].create({'name': 'Bernard Gagnant'})
+        invoice_line = self._create_invoice_line(300, partner, 'out_invoice', currency=self.currency_data_2['currency'])
+        bank_line_2 = self.env['account.bank.statement.line'].create({
+            'journal_id': self.bank_journal.id,
+            'partner_id': False,
+            'payment_ref': False,
+            'foreign_currency_id': self.currency_data_2['currency'].id,
+            'amount': 15.0,
+            'amount_currency': 300.0,
+        })
+        self._check_statement_matching(self.rule_1, {
+            bank_line_2: {
+                'amls': invoice_line,
+                'model': self.rule_1,
+            },
+        })