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# -*- coding: utf-8 -*-"""Framework for importing bank statement files."""import loggingimport base64from StringIO import StringIOfrom zipfile import ZipFile, BadZipfile # BadZipFile in Python >= 3.2
from openerp import api, models, fieldsfrom openerp.tools.translate import _from openerp.exceptions import Warning as UserError
_logger = logging.getLogger(__name__) # pylint: disable=invalid-name
class AccountBankStatementLine(models.Model): """Extend model account.bank.statement.line.""" # pylint: disable=too-many-public-methods _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('Import ID', readonly=True, copy=False)
_sql_constraints = [ ('unique_import_id', 'unique (unique_import_id)', 'A bank account transactions can be imported only once !') ]
class AccountBankStatementImport(models.TransientModel): """Extend model account.bank.statement.""" _name = 'account.bank.statement.import' _description = 'Import Bank Statement'
@api.model def _get_hide_journal_field(self): """ Return False if the journal_id can't be provided by the parsed
file and must be provided by the wizard. See account_bank_statement_import_qif """
# pylint: disable=no-self-use return True
journal_id = fields.Many2one( 'account.journal', string='Journal', help='Accounting journal related to the bank statement you\'re ' 'importing. It has be be manually chosen for statement formats which ' 'doesn\'t allow automatic journal detection (QIF for example).') hide_journal_field = fields.Boolean( string='Hide the journal field in the view', compute='_get_hide_journal_field') data_file = fields.Binary( 'Bank Statement File', required=True, help='Get you bank statements in electronic format from your bank ' 'and select them here.')
@api.multi def import_file(self): """Process the file chosen in the wizard, create bank statement(s) and
go to reconciliation."""
self.ensure_one() data_file = base64.b64decode(self.data_file) # pylint: disable=protected-access statement_ids, notifications = self.with_context( active_id=self.id # pylint: disable=no-member )._import_file(data_file) # dispatch to reconciliation interface action = self.env.ref( 'account.action_bank_reconcile_bank_statements') return { 'name': action.name, 'tag': action.tag, 'context': { 'statement_ids': statement_ids, 'notifications': notifications }, 'type': 'ir.actions.client', }
@api.model def _parse_all_files(self, data_file): """Parse one file or multiple files from zip-file.
Return array of statements for further processing. """
statements = [] files = [data_file] try: with ZipFile(StringIO(data_file), 'r') as archive: files = [ archive.read(filename) for filename in archive.namelist() if not filename.endswith('/') ] except BadZipfile: pass # Parse the file(s) for import_file in files: # The appropriate implementation module(s) returns the statements. # Actually we don't care wether all the files have the same # format. Although unlikely you might mix mt940 and camt files # in one zipfile. parse_result = self._parse_file(import_file) # Check for old version result, with separate currency and account if isinstance(parse_result, tuple) and len(parse_result) == 3: (currency_code, account_number, new_statements) = parse_result for stmt_vals in new_statements: stmt_vals['currency_code'] = currency_code stmt_vals['account_number'] = account_number else: new_statements = parse_result statements += new_statements return statements
@api.model def _import_file(self, data_file): """ Create bank statement(s) from file.""" # The appropriate implementation module returns the required data statement_ids = [] notifications = [] statements = self._parse_all_files(data_file) # Check raw data: self._check_parsed_data(statements) # Import all statements: for stmt_vals in statements: (statement_id, new_notifications) = ( self._import_statement(stmt_vals)) if statement_id: statement_ids.append(statement_id) notifications.extend(new_notifications) if len(statement_ids) == 0: raise UserError(_('You have already imported that file.')) return statement_ids, notifications
@api.model def _import_statement(self, stmt_vals): """Import a single bank-statement.
Return ids of created statements and notifications. """
currency_code = stmt_vals.pop('currency_code') account_number = stmt_vals.pop('account_number') # Try to find the bank account and currency in odoo currency_id = self._find_currency_id(currency_code) bank_account_id = self._find_bank_account_id(account_number) if not bank_account_id and account_number: raise UserError( _('Can not find the account number %s.') % account_number ) # Find the bank journal journal_id = self._get_journal(currency_id, bank_account_id) # By now journal and account_number must be known if not journal_id: raise UserError(_('Can not determine journal for import.')) # Prepare statement data to be used for bank statements creation stmt_vals = self._complete_statement( stmt_vals, journal_id, account_number) # Create the bank stmt_vals return self._create_bank_statement(stmt_vals)
@api.model def _parse_file(self, data_file): # pylint: disable=no-self-use # pylint: disable=unused-argument """ Each module adding a file support must extends this method. It
processes the file if it can, returns super otherwise, resulting in a chain of responsability. This method parses the given file and returns the data required by the bank statement import process, as specified below. - bank statements data: list of dict containing (optional items marked by o) : -o currency code: string (e.g: 'EUR') The ISO 4217 currency code, case insensitive -o account number: string (e.g: 'BE1234567890') The number of the bank account which the statement belongs to - 'name': string (e.g: '000000123') - 'date': date (e.g: 2013-06-26) -o 'balance_start': float (e.g: 8368.56) -o 'balance_end_real': float (e.g: 8888.88) - 'transactions': list of dict containing : - 'name': string (e.g: 'KBC-INVESTERINGSKREDIET 787-5562831-01') - 'date': date - 'amount': float - 'unique_import_id': string -o 'account_number': string Will be used to find/create the res.partner.bank in odoo -o 'note': string -o 'partner_name': string -o 'ref': string """
raise UserError(_( 'Could not make sense of the given file.\n' 'Did you install the module to support this type of file?' ))
@api.model def _check_parsed_data(self, statements): # pylint: disable=no-self-use """ Basic and structural verifications """ if len(statements) == 0: raise UserError(_('This file doesn\'t contain any statement.')) for stmt_vals in statements: if 'transactions' in stmt_vals and stmt_vals['transactions']: return # If we get here, no transaction was found: raise UserError(_('This file doesn\'t contain any transaction.'))
@api.model def _find_currency_id(self, currency_code): """ Get res.currency ID.""" if currency_code: currency_ids = self.env['res.currency'].search( [('name', '=ilike', currency_code)]) if currency_ids: return currency_ids[0].id else: raise UserError(_( 'Statement has invalid currency code %s') % currency_code) # if no currency_code is provided, we'll use the company currency return self.env.user.company_id.currency_id.id
@api.model def _find_bank_account_id(self, account_number): """ Get res.partner.bank ID """ bank_account_id = None if account_number and len(account_number) > 4: bank_account_ids = self.env['res.partner.bank'].search( [('acc_number', '=', account_number)], limit=1) if bank_account_ids: bank_account_id = bank_account_ids[0].id return bank_account_id
@api.model def _get_journal(self, currency_id, bank_account_id): """ Find the journal """ bank_model = self.env['res.partner.bank'] # Find the journal from context, wizard or bank account journal_id = self.env.context.get('journal_id') or self.journal_id.id if bank_account_id: bank_account = bank_model.browse(bank_account_id) if journal_id: if (bank_account.journal_id.id and bank_account.journal_id.id != journal_id): raise UserError( _('The account of this statement is linked to ' 'another journal.')) if not bank_account.journal_id.id: bank_model.write({'journal_id': journal_id}) else: if bank_account.journal_id.id: journal_id = bank_account.journal_id.id # If importing into an existing journal, its currency must be the same # as the bank statement. When journal has no currency, currency must # be equal to company currency. if journal_id and currency_id: journal_obj = self.env['account.journal'].browse(journal_id) if journal_obj.currency: journal_currency_id = journal_obj.currency.id if currency_id != journal_currency_id: # ALso log message with id's for technical analysis: _logger.warn( _('Statement currency id is %d,' ' but journal currency id = %d.'), currency_id, journal_currency_id ) raise UserError(_( 'The currency of the bank statement is not ' 'the same as the currency of the journal !' )) else: company_currency_id = self.env.user.company_id.currency_id.id if currency_id != company_currency_id: # ALso log message with id's for technical analysis: _logger.warn( _('Statement currency id is %d,' ' but company currency id = %d.'), currency_id, company_currency_id ) raise UserError(_( 'The currency of the bank statement is not ' 'the same as the company currency !' )) return journal_id
@api.model @api.returns('res.partner.bank') def _create_bank_account( self, account_number, company_id=False, currency_id=False): """Automagically create bank account, when not yet existing.""" try: bank_type = self.env.ref('base.bank_normal') bank_code = bank_type.code except ValueError: bank_code = 'bank' vals_acc = { 'acc_number': account_number, 'state': bank_code, } # Odoo users bank accounts (which we import statement from) have # company_id and journal_id set while 'counterpart' bank accounts # (from which statement transactions originate) don't. # Warning : if company_id is set, the method post_write of class # bank will create a journal if company_id: vals = self.env['res.partner.bank'].onchange_company_id(company_id) vals_acc.update(vals.get('value', {})) vals_acc['company_id'] = company_id
# When the journal is created at same time of the bank account, we need # to specify the currency to use for the account.account and # account.journal return self.env['res.partner.bank'].with_context( default_currency_id=currency_id, default_currency=currency_id).create(vals_acc)
@api.model def _complete_statement(self, stmt_vals, journal_id, account_number): """Complete statement from information passed.""" stmt_vals['journal_id'] = journal_id for line_vals in stmt_vals['transactions']: unique_import_id = line_vals.get('unique_import_id', False) if unique_import_id: line_vals['unique_import_id'] = ( (account_number and account_number + '-' or '') + unique_import_id ) if not line_vals.get('bank_account_id'): # Find the partner and his bank account or create the bank # account. The partner selected during the reconciliation # process will be linked to the bank when the statement is # closed. partner_id = False bank_account_id = False partner_account_number = line_vals.get('account_number') if partner_account_number: bank_model = self.env['res.partner.bank'] banks = bank_model.search( [('acc_number', '=', partner_account_number)], limit=1) if banks: bank_account_id = banks[0].id partner_id = banks[0].partner_id.id else: bank_obj = self._create_bank_account( partner_account_number) bank_account_id = bank_obj and bank_obj.id or False line_vals['partner_id'] = partner_id line_vals['bank_account_id'] = bank_account_id return stmt_vals
@api.model def _create_bank_statement(self, stmt_vals): """ Create bank statement from imported values, filtering out
already imported transactions, and return data used by the reconciliation widget """
bs_model = self.env['account.bank.statement'] bsl_model = self.env['account.bank.statement.line'] # Filter out already imported transactions and create statement ignored_line_ids = [] filtered_st_lines = [] for line_vals in stmt_vals['transactions']: unique_id = ( 'unique_import_id' in line_vals and line_vals['unique_import_id'] ) if not unique_id or not bool(bsl_model.sudo().search( [('unique_import_id', '=', unique_id)], limit=1)): filtered_st_lines.append(line_vals) else: ignored_line_ids.append(unique_id) statement_id = False if len(filtered_st_lines) > 0: # Remove values that won't be used to create records stmt_vals.pop('transactions', None) for line_vals in filtered_st_lines: line_vals.pop('account_number', None) # Create the statement stmt_vals['line_ids'] = [ [0, False, line] for line in filtered_st_lines] statement_id = bs_model.create(stmt_vals).id # Prepare import feedback notifications = [] num_ignored = len(ignored_line_ids) if num_ignored > 0: notifications += [{ 'type': 'warning', 'message': _("%d transactions had already been imported and " "were ignored.") % num_ignored if num_ignored > 1 else _("1 transaction had already been imported and " "was ignored."), 'details': { 'name': _('Already imported items'), 'model': 'account.bank.statement.line', 'ids': bsl_model.search( [('unique_import_id', 'in', ignored_line_ids)]).ids} }] return statement_id, notifications
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