[IMP] calculate the final balance if not provided in the import file.

account_bank_statement_import_txt_xlsx/models/account_bank_statement_import.py

@@ -36,3 +36,16 @@ class AccountBankStatementImport(models.TransientModel):
                 raise
             _logger.warning("Sheet parser error", exc_info=True)
         return super()._parse_file(data_file)
+
+    def _create_bank_statements(self, stmts_vals):
+        """ Set balance_end_real if not already provided by the file."""
+
+        statement_line_ids, notifications = super()._create_bank_statements(stmts_vals)
+        statements = self.env["account.bank.statement"].search(
+            [("line_ids", "in", statement_line_ids)]
+        )
+        for statement in statements:
+            if not statement.balance_end_real:
+                amount = sum(statement.line_ids.mapped("amount"))
+                statement.balance_end_real = statement.balance_start + amount
+        return statement_line_ids, notifications

account_bank_statement_import_txt_xlsx/models/account_bank_statement_import_sheet_parser.py

@@ -66,6 +66,7 @@ class AccountBankStatementImportSheetParser(models.TransientModel):
         last_line = lines[-1]
         data = {
             "date": first_line["timestamp"].date(),
+            "name": _("%s: %s") % (journal.code, path.basename(filename),),
         }
 
         if mapping.balance_column:
@@ -76,10 +77,8 @@ class AccountBankStatementImportSheetParser(models.TransientModel):
                 {
                     "balance_start": float(balance_start),
                     "balance_end_real": float(balance_end),
-                    "name": _("%s: %s") % (journal.code, path.basename(filename),),
                 }
             )
-
         transactions = list(
             itertools.chain.from_iterable(
                 map(lambda line: self._convert_line_to_transactions(line), lines)