[MIG] account_bank_statement_import to v14 > account_statement_import

Module renamed to account_statement_import to avoid conflit with Odoo enterprise
Add support for multi-account statement files
Integrate the feature provided by the module account_bank_statement_import_save_file
Improve error messages
Remove dead or annoying features
Improve code !

account_statement_import/models/__init__.py

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+from . import account_journal
+from . import account_bank_statement_line

account_statement_import/models/account_bank_statement_line.py

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+# Copyright 2004-2020 Odoo S.A.
+# Copyright 2020 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# Licence LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl-3.0).
+
+from odoo import fields, models
+
+
+class AccountBankStatementLine(models.Model):
+    _inherit = "account.bank.statement.line"
+
+    # Ensure transactions can be imported only once
+    # (if the import format provides unique transaction ids)
+    unique_import_id = fields.Char(string="Import ID", readonly=True, copy=False)
+    # v13 field: bank_partner_id
+    # This field was removed in v14, but it is still used in the code, cf the
+    # method reconcile() !!! So I restore the field here
+    partner_bank_id = fields.Many2one("res.partner.bank", string="Partner Bank Account")
+
+    _sql_constraints = [
+        (
+            "unique_import_id",
+            "unique(unique_import_id)",
+            "A bank account transaction can be imported only once!",
+        )
+    ]

account_statement_import/models/account_journal.py

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+# Copyright 2004-2020 Odoo S.A.
+# Copyright 2020 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# Licence LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl-3.0).
+
+from odoo import _, models
+
+
+class AccountJournal(models.Model):
+    _inherit = "account.journal"
+
+    def _get_bank_statements_available_import_formats(self):
+        """Returns a list of strings representing the supported import formats."""
+        return []
+
+    def __get_bank_statements_available_sources(self):
+        rslt = super().__get_bank_statements_available_sources()
+        formats_list = self._get_bank_statements_available_import_formats()
+        if formats_list:
+            formats_list.sort()
+            import_formats_str = ", ".join(formats_list)
+            rslt.append(("file_import", _("Import") + "(" + import_formats_str + ")"))
+        return rslt
+
+    def import_statement(self):
+        """return action to import bank/cash statements.
+        This button should be called only on journals with type =='bank'"""
+        action = self.env.ref(
+            "account_statement_import.account_statement_import_action"
+        ).read()[0]
+        action["context"] = {"journal_id": self.id}
+        return action