200 lines
10 KiB
Python
200 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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# Part of Odoo, Flectra. See LICENSE file for full copyright and licensing details.
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from datetime import datetime, timedelta
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from hashlib import sha256
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from json import dumps
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import pytz
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from flectra import models, api, fields
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from flectra.fields import Datetime
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from flectra.tools.translate import _
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from flectra.exceptions import UserError
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def ctx_tz(record, field):
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res_lang = None
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ctx = record._context
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tz_name = pytz.timezone(ctx.get('tz') or record.env.user.tz)
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timestamp = Datetime.from_string(record[field])
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if ctx.get('lang'):
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res_lang = record.env['res.lang'].search([('code', '=', ctx['lang'])], limit=1)
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if res_lang:
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timestamp = pytz.utc.localize(timestamp, is_dst=False)
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return datetime.strftime(timestamp.astimezone(tz_name), res_lang.date_format + ' ' + res_lang.time_format)
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return Datetime.context_timestamp(record, timestamp)
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class pos_config(models.Model):
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_inherit = 'pos.config'
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@api.multi
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def open_ui(self):
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for config in self.filtered(lambda c: c.company_id._is_accounting_unalterable()):
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if config.current_session_id:
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config.current_session_id._check_session_timing()
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return super(pos_config, self).open_ui()
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class pos_session(models.Model):
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_inherit = 'pos.session'
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@api.multi
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def _check_session_timing(self):
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self.ensure_one()
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date_today = datetime.utcnow()
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session_start = Datetime.from_string(self.start_at)
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if not date_today - timedelta(hours=24) <= session_start:
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raise UserError(_("This session has been opened another day. To comply with the French law, you should close sessions on a daily basis. Please close session %s and open a new one.") % self.name)
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return True
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@api.multi
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def open_frontend_cb(self):
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for session in self.filtered(lambda s: s.config_id.company_id._is_accounting_unalterable()):
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session._check_session_timing()
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return super(pos_session, self).open_frontend_cb()
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ORDER_FIELDS = ['date_order', 'user_id', 'lines', 'statement_ids', 'pricelist_id', 'partner_id', 'session_id', 'pos_reference', 'sale_journal', 'fiscal_position_id']
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LINE_FIELDS = ['notice', 'product_id', 'qty', 'price_unit', 'discount', 'tax_ids', 'tax_ids_after_fiscal_position']
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ERR_MSG = _('According to the French law, you cannot modify a %s. Forbidden fields: %s.')
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class pos_order(models.Model):
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_inherit = 'pos.order'
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l10n_fr_hash = fields.Char(string="Inalteralbility Hash", readonly=True, copy=False)
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l10n_fr_secure_sequence_number = fields.Integer(string="Inalteralbility No Gap Sequence #", readonly=True, copy=False)
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l10n_fr_string_to_hash = fields.Char(compute='_compute_string_to_hash', readonly=True, store=False)
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def _get_new_hash(self, secure_seq_number):
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""" Returns the hash to write on pos orders when they get posted"""
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self.ensure_one()
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#get the only one exact previous order in the securisation sequence
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prev_order = self.search([('state', 'in', ['paid', 'done', 'invoiced']),
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('company_id', '=', self.company_id.id),
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('l10n_fr_secure_sequence_number', '!=', 0),
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('l10n_fr_secure_sequence_number', '=', int(secure_seq_number) - 1)])
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if prev_order and len(prev_order) != 1:
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raise UserError(
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_('An error occured when computing the inalterability. Impossible to get the unique previous posted point of sale order.'))
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#build and return the hash
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return self._compute_hash(prev_order.l10n_fr_hash if prev_order else u'')
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def _compute_hash(self, previous_hash):
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""" Computes the hash of the browse_record given as self, based on the hash
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of the previous record in the company's securisation sequence given as parameter"""
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self.ensure_one()
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hash_string = sha256((previous_hash + self.l10n_fr_string_to_hash).encode('utf-8'))
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return hash_string.hexdigest()
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def _compute_string_to_hash(self):
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def _getattrstring(obj, field_str):
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field_value = obj[field_str]
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if obj._fields[field_str].type == 'many2one':
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field_value = field_value.id
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if obj._fields[field_str].type in ['many2many', 'one2many']:
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field_value = field_value.ids
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return str(field_value)
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for order in self:
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values = {}
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for field in ORDER_FIELDS:
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values[field] = _getattrstring(order, field)
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for line in order.lines:
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for field in LINE_FIELDS:
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k = 'line_%d_%s' % (line.id, field)
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values[k] = _getattrstring(line, field)
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#make the json serialization canonical
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# (https://tools.ietf.org/html/draft-staykov-hu-json-canonical-form-00)
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order.l10n_fr_string_to_hash = dumps(values, sort_keys=True,
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ensure_ascii=True, indent=None,
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separators=(',',':'))
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@api.multi
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def write(self, vals):
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has_been_posted = False
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for order in self:
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if order.company_id._is_accounting_unalterable():
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# write the hash and the secure_sequence_number when posting or invoicing an pos.order
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if vals.get('state') in ['paid', 'done', 'invoiced']:
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has_been_posted = True
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# restrict the operation in case we are trying to write a forbidden field
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if (order.state in ['paid', 'done', 'invoiced'] and set(vals).intersection(ORDER_FIELDS)):
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raise UserError(_('According to the French law, you cannot modify a point of sale order. Forbidden fields: %s.') % ', '.join(ORDER_FIELDS))
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# restrict the operation in case we are trying to overwrite existing hash
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if (order.l10n_fr_hash and 'l10n_fr_hash' in vals) or (order.l10n_fr_secure_sequence_number and 'l10n_fr_secure_sequence_number' in vals):
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raise UserError(_('You cannot overwrite the values ensuring the inalterability of the point of sale.'))
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res = super(pos_order, self).write(vals)
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# write the hash and the secure_sequence_number when posting or invoicing a pos order
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if has_been_posted:
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for order in self.filtered(lambda o: o.company_id._is_accounting_unalterable() and
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not (o.l10n_fr_secure_sequence_number or o.l10n_fr_hash)):
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new_number = order.company_id.l10n_fr_pos_cert_sequence_id.next_by_id()
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vals_hashing = {'l10n_fr_secure_sequence_number': new_number,
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'l10n_fr_hash': order._get_new_hash(new_number)}
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res |= super(pos_order, order).write(vals_hashing)
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return res
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@api.model
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def _check_hash_integrity(self, company_id):
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"""Checks that all posted or invoiced pos orders have still the same data as when they were posted
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and raises an error with the result.
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"""
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def build_order_info(order):
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entry_reference = _('(Receipt ref.: %s)')
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order_reference_string = order.pos_reference and entry_reference % order.pos_reference or ''
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return [ctx_tz(order, 'date_order'), order.l10n_fr_secure_sequence_number, order.name, order_reference_string, ctx_tz(order, 'write_date')]
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orders = self.search([('state', 'in', ['paid', 'done', 'invoiced']),
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('company_id', '=', company_id),
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('l10n_fr_secure_sequence_number', '!=', 0)],
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order="l10n_fr_secure_sequence_number ASC")
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if not orders:
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raise UserError(_('There isn\'t any order flagged for data inalterability yet for the company %s. This mechanism only runs for point of sale orders generated after the installation of the module France - Certification CGI 286 I-3 bis. - POS') % self.env.user.company_id.name)
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previous_hash = u''
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start_order_info = []
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for order in orders:
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if order.l10n_fr_hash != order._compute_hash(previous_hash=previous_hash):
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raise UserError(_('Corrupted data on point of sale order with id %s.') % order.id)
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previous_hash = order.l10n_fr_hash
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orders_sorted_date = orders.sorted(lambda o: o.date_order)
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start_order_info = build_order_info(orders_sorted_date[0])
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end_order_info = build_order_info(orders_sorted_date[-1])
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report_dict = {'start_order_name': start_order_info[2],
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'start_order_ref': start_order_info[3],
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'start_order_date': start_order_info[0],
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'end_order_name': end_order_info[2],
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'end_order_ref': end_order_info[3],
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'end_order_date': end_order_info[0]}
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# Raise on success
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raise UserError(_('''Successful test !
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The point of sale orders are guaranteed to be in their original and inalterable state
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From: %(start_order_name)s %(start_order_ref)s recorded on %(start_order_date)s
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To: %(end_order_name)s %(end_order_ref)s recorded on %(end_order_date)s
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For this report to be legally meaningful, please
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download your certification from your customer
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account on flectrahq.com (Only for Flectra
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Enterprise users).'''
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) % report_dict)
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class PosOrderLine(models.Model):
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_inherit = "pos.order.line"
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@api.multi
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def write(self, vals):
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# restrict the operation in case we are trying to write a forbidden field
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if set(vals).intersection(LINE_FIELDS):
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if any(l.company_id._is_accounting_unalterable() and l.order_id.state in ['done', 'invoiced'] for l in self):
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raise UserError(_('According to the French law, you cannot modify a point of sale order line. Forbidden fields: %s.') % ', '.join(LINE_FIELDS))
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return super(PosOrderLine, self).write(vals)
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