Habib (ayh)
39c78c92ff
To enable VAT validation (VIES/ simple), the base_vat module needs to be installed. base_vat extends models where the validation should apply. This means it only works with models in account, unless the module is added as a dependency (base_vat depends on account) To avoid this dependency (in account reports - see enterprise PR odoo/enterprise#34068), two methods required for VAT validation are added to res.partner so that the enterprise module is able to use this feature with/without base_vat. closes odoo/odoo#106046 Signed-off-by: Olivier Colson (oco) <oco@odoo.com>
731 lines
29 KiB
Python
731 lines
29 KiB
Python
# -*- coding: utf-8 -*-
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# Part of Odoo. See LICENSE file for full copyright and licensing details.
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import datetime
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import string
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import re
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import stdnum
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from stdnum.eu.vat import check_vies
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from stdnum.exceptions import InvalidComponent
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from stdnum.util import clean
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import logging
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from odoo import api, models, fields, tools, _
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from odoo.tools.misc import ustr
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from odoo.exceptions import ValidationError
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_logger = logging.getLogger(__name__)
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_eu_country_vat = {
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'GR': 'EL'
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}
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_eu_country_vat_inverse = {v: k for k, v in _eu_country_vat.items()}
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_ref_vat = {
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'al': 'ALJ91402501L',
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'ar': 'AR200-5536168-2 or 20055361682',
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'at': 'ATU12345675',
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'au': '83 914 571 673',
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'be': 'BE0477472701',
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'bg': 'BG1234567892',
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'ch': 'CHE-123.456.788 TVA or CHE-123.456.788 MWST or CHE-123.456.788 IVA', # Swiss by Yannick Vaucher @ Camptocamp
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'cl': 'CL76086428-5',
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'co': 'CO213123432-1 or CO213.123.432-1',
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'cy': 'CY10259033P',
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'cz': 'CZ12345679',
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'de': 'DE123456788',
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'dk': 'DK12345674',
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'do': 'DO1-01-85004-3 or 101850043',
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'ec': 'EC1792060346-001',
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'ee': 'EE123456780',
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'el': 'EL12345670',
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'es': 'ESA12345674',
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'fi': 'FI12345671',
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'fr': 'FR23334175221',
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'gb': 'GB123456782 or XI123456782',
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'gr': 'GR12345670',
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'hu': 'HU12345676',
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'hr': 'HR01234567896', # Croatia, contributed by Milan Tribuson
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'ie': 'IE1234567FA',
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'in': "12AAAAA1234AAZA",
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'is': 'IS062199',
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'it': 'IT12345670017',
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'lt': 'LT123456715',
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'lu': 'LU12345613',
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'lv': 'LV41234567891',
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'mc': 'FR53000004605',
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'mt': 'MT12345634',
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'mx': 'MXGODE561231GR8 or GODE561231GR8',
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'nl': 'NL123456782B90',
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'no': 'NO123456785',
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'nz': '49-098-576 or 49098576',
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'pe': '10XXXXXXXXY or 20XXXXXXXXY or 15XXXXXXXXY or 16XXXXXXXXY or 17XXXXXXXXY',
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'ph': '123-456-789-123',
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'pl': 'PL1234567883',
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'pt': 'PT123456789',
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'ro': 'RO1234567897',
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'rs': 'RS101134702',
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'ru': 'RU123456789047',
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'se': 'SE123456789701',
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'si': 'SI12345679',
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'sk': 'SK2022749619',
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'sm': 'SM24165',
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'tr': 'TR1234567890 (VERGINO) or TR17291716060 (TCKIMLIKNO)', # Levent Karakas @ Eska Yazilim A.S.
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've': 'V-12345678-1, V123456781, V-12.345.678-1',
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'xi': 'XI123456782',
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}
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_region_specific_vat_codes = {
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'xi',
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}
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class ResPartner(models.Model):
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_inherit = 'res.partner'
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vies_failed_message = fields.Char('Technical field display a message to the user if the VIES check fails.', store=False)
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def _split_vat(self, vat):
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vat_country, vat_number = vat[:2].lower(), vat[2:].replace(' ', '')
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return vat_country, vat_number
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@api.model
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def simple_vat_check(self, country_code, vat_number):
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'''
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Check the VAT number depending of the country.
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http://sima-pc.com/nif.php
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'''
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if not ustr(country_code).encode('utf-8').isalpha():
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return False
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check_func_name = 'check_vat_' + country_code
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check_func = getattr(self, check_func_name, None) or getattr(stdnum.util.get_cc_module(country_code, 'vat'), 'is_valid', None)
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if not check_func:
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# No VAT validation available, default to check that the country code exists
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if country_code.upper() == 'EU':
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# Foreign companies that trade with non-enterprises in the EU
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# may have a VATIN starting with "EU" instead of a country code.
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return True
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country_code = _eu_country_vat_inverse.get(country_code, country_code)
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return bool(self.env['res.country'].search([('code', '=ilike', country_code)]))
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return check_func(vat_number)
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@api.model
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@tools.ormcache('vat')
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def _check_vies(self, vat):
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# Store the VIES result in the cache. In case an exception is raised during the request
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# (e.g. service unavailable), the fallback on simple_vat_check is not kept in cache.
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return check_vies(vat)
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@api.model
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def vies_vat_check(self, country_code, vat_number):
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try:
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# Validate against VAT Information Exchange System (VIES)
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# see also http://ec.europa.eu/taxation_customs/vies/
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vies_result = self._check_vies(country_code.upper() + vat_number)
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return vies_result['valid']
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except InvalidComponent:
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return False
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except Exception:
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# see http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl
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# Fault code may contain INVALID_INPUT, SERVICE_UNAVAILABLE, MS_UNAVAILABLE,
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# TIMEOUT or SERVER_BUSY. There is no way we can validate the input
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# with VIES if any of these arise, including the first one (it means invalid
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# country code or empty VAT number), so we return True and ignore the result.
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_logger.exception("Failed VIES VAT check.")
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return True
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@api.model
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def fix_eu_vat_number(self, country_id, vat):
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europe = self.env.ref('base.europe')
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country = self.env["res.country"].browse(country_id)
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if not europe:
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europe = self.env["res.country.group"].search([('name', '=', 'Europe')], limit=1)
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if europe and country and country.id in europe.country_ids.ids:
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vat = re.sub('[^A-Za-z0-9]', '', vat).upper()
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country_code = _eu_country_vat.get(country.code, country.code).upper()
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if vat[:2] != country_code:
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vat = country_code + vat
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return vat
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@api.constrains('vat', 'country_id')
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def check_vat(self):
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# The context key 'no_vat_validation' allows you to store/set a VAT number without doing validations.
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# This is for API pushes from external platforms where you have no control over VAT numbers.
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if self.env.context.get('no_vat_validation'):
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return
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for partner in self:
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# Skip checks when only one character is used. Some users like to put '/' or other as VAT to differentiate between
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# A partner for which they didn't input VAT, and the one not subject to VAT
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if not partner.vat or len(partner.vat) == 1:
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continue
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country = partner.commercial_partner_id.country_id
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if self._run_vat_test(partner.vat, country, partner.is_company) is False:
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partner_label = _("partner [%s]", partner.name)
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msg = partner._build_vat_error_message(country and country.code.lower() or None, partner.vat, partner_label)
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raise ValidationError(msg)
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@api.onchange('vat', 'country_id')
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def _onchange_check_vies(self):
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""" Check the VAT number with VIES, if enabled. Return a non-blocking warning if the check fails."""
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if self.env.context.get('company_id'):
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company = self.env['res.company'].browse(self.env.context['company_id'])
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else:
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company = self.env.company
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if not company.vat_check_vies:
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return
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eu_countries = self.env.ref('base.europe').country_ids
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for eu_partner_company in self.filtered(lambda partner: partner.country_id in eu_countries and partner.is_company):
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# Skip checks when only one character is used. Some users like to put '/' or other as VAT to differentiate between
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# A partner for which they didn't input VAT, and the one not subject to VAT
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if not eu_partner_company.vat or len(eu_partner_company.vat) == 1:
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continue
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country = eu_partner_company.country_id
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if self._run_vies_test(eu_partner_company.vat, country) is False:
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self.vies_failed_message = _("The VAT number %s failed the VIES VAT validation check.", eu_partner_company.vat)
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else:
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self.vies_failed_message = False
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@api.model
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def _run_vat_test(self, vat_number, default_country, partner_is_company=True):
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# OVERRIDE account
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check_result = None
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# First check with country code as prefix of the TIN
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vat_country_code, vat_number_split = self._split_vat(vat_number)
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vat_has_legit_country_code = self.env['res.country'].search([('code', '=', vat_country_code.upper())], limit=1)
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if not vat_has_legit_country_code:
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vat_has_legit_country_code = vat_country_code.lower() in _region_specific_vat_codes
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if vat_has_legit_country_code:
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check_result = self.simple_vat_check(vat_country_code, vat_number_split)
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if check_result:
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return vat_country_code
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# If it fails, check with default_country (if it exists)
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if default_country:
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check_result = self.simple_vat_check(default_country.code.lower(), vat_number)
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if check_result:
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return default_country.code.lower()
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# We allow any number if it doesn't start with a country code and the partner has no country.
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# This is necessary to support an ORM limitation: setting vat and country_id together on a company
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# triggers two distinct write on res.partner, one for each field, both triggering this constraint.
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# If vat is set before country_id, the constraint must not break.
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return check_result
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@api.model
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def _run_vies_test(self, vat_number, default_country):
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""" Validate a VAT number using the VIES VAT validation. """
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check_result = None
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# First check with country code as prefix of the TIN
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vat_country_code, vat_number_split = self._split_vat(vat_number)
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vat_has_legit_country_code = self.env['res.country'].search([('code', '=', vat_country_code.upper())])
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if not vat_has_legit_country_code:
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vat_has_legit_country_code = vat_country_code.lower() in _region_specific_vat_codes
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if vat_has_legit_country_code:
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check_result = self.vies_vat_check(vat_country_code, vat_number_split)
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if check_result:
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return vat_country_code
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# If it fails, check with default_country (if it exists)
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if default_country:
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check_result = self.vies_vat_check(default_country.code.lower(), vat_number)
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if check_result:
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return default_country.code.lower()
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return check_result
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@api.model
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def _build_vat_error_message(self, country_code, wrong_vat, record_label):
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# OVERRIDE account
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if self.env.context.get('company_id'):
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company = self.env['res.company'].browse(self.env.context['company_id'])
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else:
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company = self.env.company
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vat_label = _("VAT")
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if country_code and company.country_id and country_code == company.country_id.code.lower():
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vat_label = company.country_id.vat_label
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expected_format = _ref_vat.get(country_code, "'CC##' (CC=Country Code, ##=VAT Number)")
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# Catch use case where the record label is about the public user (name: False)
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if 'False' not in record_label:
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return '\n' + _(
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'The %(vat_label)s number [%(wrong_vat)s] for %(record_label)s does not seem to be valid. \nNote: the expected format is %(expected_format)s',
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vat_label=vat_label,
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wrong_vat=wrong_vat,
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record_label=record_label,
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expected_format=expected_format,
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)
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else:
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return '\n' + _(
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'The %(vat_label)s number [%(wrong_vat)s] does not seem to be valid. \nNote: the expected format is %(expected_format)s',
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vat_label=vat_label,
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wrong_vat=wrong_vat,
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expected_format=expected_format,
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)
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__check_vat_al_re = re.compile(r'^[JKLM][0-9]{8}[A-Z]$')
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def check_vat_al(self, vat):
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"""Check Albania VAT number"""
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number = stdnum.util.get_cc_module('al', 'vat').compact(vat)
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if len(number) == 10 and self.__check_vat_al_re.match(number):
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return True
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return False
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__check_vat_ch_re = re.compile(r'E([0-9]{9}|-[0-9]{3}\.[0-9]{3}\.[0-9]{3})(MWST|TVA|IVA)$')
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def check_vat_ch(self, vat):
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'''
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Check Switzerland VAT number.
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'''
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# A new VAT number format in Switzerland has been introduced between 2011 and 2013
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# https://www.estv.admin.ch/estv/fr/home/mehrwertsteuer/fachinformationen/steuerpflicht/unternehmens-identifikationsnummer--uid-.html
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# The old format "TVA 123456" is not valid since 2014
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# Accepted format are: (spaces are ignored)
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# CHE#########MWST
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# CHE#########TVA
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# CHE#########IVA
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# CHE-###.###.### MWST
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# CHE-###.###.### TVA
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# CHE-###.###.### IVA
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#
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# /!\ The english abbreviation VAT is not valid /!\
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match = self.__check_vat_ch_re.match(vat)
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if match:
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# For new TVA numbers, the last digit is a MOD11 checksum digit build with weighting pattern: 5,4,3,2,7,6,5,4
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num = [s for s in match.group(1) if s.isdigit()] # get the digits only
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factor = (5, 4, 3, 2, 7, 6, 5, 4)
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csum = sum([int(num[i]) * factor[i] for i in range(8)])
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check = (11 - (csum % 11)) % 11
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return check == int(num[8])
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return False
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def is_valid_ruc_ec(self, vat):
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ci = stdnum.util.get_cc_module("ec", "ci")
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ruc = stdnum.util.get_cc_module("ec", "ruc")
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if len(vat) == 10:
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return ci.is_valid(vat)
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elif len(vat) == 13:
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if vat[2] == "6" and ci.is_valid(vat[:10]):
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return True
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else:
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return ruc.is_valid(vat)
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return False
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def check_vat_ec(self, vat):
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vat = clean(vat, ' -.').upper().strip()
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return self.is_valid_ruc_ec(vat)
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def _ie_check_char(self, vat):
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vat = vat.zfill(8)
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extra = 0
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if vat[7] not in ' W':
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if vat[7].isalpha():
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extra = 9 * (ord(vat[7]) - 64)
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else:
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# invalid
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return -1
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checksum = extra + sum((8-i) * int(x) for i, x in enumerate(vat[:7]))
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return 'WABCDEFGHIJKLMNOPQRSTUV'[checksum % 23]
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def check_vat_ie(self, vat):
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""" Temporary Ireland VAT validation to support the new format
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introduced in January 2013 in Ireland, until upstream is fixed.
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TODO: remove when fixed upstream"""
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if len(vat) not in (8, 9) or not vat[2:7].isdigit():
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return False
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if len(vat) == 8:
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# Normalize pre-2013 numbers: final space or 'W' not significant
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vat += ' '
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if vat[:7].isdigit():
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return vat[7] == self._ie_check_char(vat[:7] + vat[8])
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elif vat[1] in (string.ascii_uppercase + '+*'):
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# Deprecated format
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# See http://www.revenue.ie/en/online/third-party-reporting/reporting-payment-details/faqs.html#section3
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return vat[7] == self._ie_check_char(vat[2:7] + vat[0] + vat[8])
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return False
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# Mexican VAT verification, contributed by Vauxoo
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# and Panos Christeas <p_christ@hol.gr>
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__check_vat_mx_re = re.compile(br"(?P<primeras>[A-Za-z\xd1\xf1&]{3,4})" \
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br"[ \-_]?" \
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br"(?P<ano>[0-9]{2})(?P<mes>[01][0-9])(?P<dia>[0-3][0-9])" \
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br"[ \-_]?" \
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br"(?P<code>[A-Za-z0-9&\xd1\xf1]{3})$")
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def check_vat_mx(self, vat):
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''' Mexican VAT verification
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Verificar RFC México
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'''
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# we convert to 8-bit encoding, to help the regex parse only bytes
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vat = ustr(vat).encode('iso8859-1')
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m = self.__check_vat_mx_re.match(vat)
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if not m:
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#No valid format
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return False
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try:
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ano = int(m.group('ano'))
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if ano > 30:
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ano = 1900 + ano
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else:
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ano = 2000 + ano
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datetime.date(ano, int(m.group('mes')), int(m.group('dia')))
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except ValueError:
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return False
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# Valid format and valid date
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return True
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# Netherlands VAT verification
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__check_vat_nl_re = re.compile("(?:NL)?[0-9A-Z+*]{10}[0-9]{2}")
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def check_vat_nl(self, vat):
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"""
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Temporary Netherlands VAT validation to support the new format introduced in January 2020,
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until upstream is fixed.
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Algorithm detail: http://kleineondernemer.nl/index.php/nieuw-btw-identificatienummer-vanaf-1-januari-2020-voor-eenmanszaken
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TODO: remove when fixed upstream
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"""
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try:
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from stdnum.util import clean
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from stdnum.nl.bsn import checksum
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except ImportError:
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return True
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vat = clean(vat, ' -.').upper().strip()
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# Remove the prefix
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if vat.startswith("NL"):
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vat = vat[2:]
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if not len(vat) == 12:
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return False
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# Check the format
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match = self.__check_vat_nl_re.match(vat)
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if not match:
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return False
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# Match letters to integers
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char_to_int = {k: str(ord(k) - 55) for k in string.ascii_uppercase}
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char_to_int['+'] = '36'
|
|
char_to_int['*'] = '37'
|
|
|
|
# 2 possible checks:
|
|
# - For natural persons
|
|
# - For non-natural persons and combinations of natural persons (company)
|
|
|
|
# Natural person => mod97 full checksum
|
|
check_val_natural = '2321'
|
|
for x in vat:
|
|
check_val_natural += x if x.isdigit() else char_to_int[x]
|
|
if int(check_val_natural) % 97 == 1:
|
|
return True
|
|
|
|
# Company => weighted(9->2) mod11 on bsn
|
|
vat = vat[:-3]
|
|
if vat.isdigit() and checksum(vat) == 0:
|
|
return True
|
|
|
|
return False
|
|
|
|
# Norway VAT validation, contributed by Rolv Råen (adEgo) <rora@adego.no>
|
|
# Support for MVA suffix contributed by Bringsvor Consulting AS (bringsvor@bringsvor.com)
|
|
def check_vat_no(self, vat):
|
|
"""
|
|
Check Norway VAT number.See http://www.brreg.no/english/coordination/number.html
|
|
"""
|
|
if len(vat) == 12 and vat.upper().endswith('MVA'):
|
|
vat = vat[:-3] # Strictly speaking we should enforce the suffix MVA but...
|
|
|
|
if len(vat) != 9:
|
|
return False
|
|
try:
|
|
int(vat)
|
|
except ValueError:
|
|
return False
|
|
|
|
sum = (3 * int(vat[0])) + (2 * int(vat[1])) + \
|
|
(7 * int(vat[2])) + (6 * int(vat[3])) + \
|
|
(5 * int(vat[4])) + (4 * int(vat[5])) + \
|
|
(3 * int(vat[6])) + (2 * int(vat[7]))
|
|
|
|
check = 11 - (sum % 11)
|
|
if check == 11:
|
|
check = 0
|
|
if check == 10:
|
|
# 10 is not a valid check digit for an organization number
|
|
return False
|
|
return check == int(vat[8])
|
|
|
|
# Peruvian VAT validation, contributed by Vauxoo
|
|
def check_vat_pe(self, vat):
|
|
if len(vat) != 11 or not vat.isdigit():
|
|
return False
|
|
dig_check = 11 - (sum([int('5432765432'[f]) * int(vat[f]) for f in range(0, 10)]) % 11)
|
|
if dig_check == 10:
|
|
dig_check = 0
|
|
elif dig_check == 11:
|
|
dig_check = 1
|
|
return int(vat[10]) == dig_check
|
|
|
|
# Philippines TIN (+ branch code) validation
|
|
__check_vat_ph_re = re.compile(r"\d{3}-\d{3}-\d{3}(-\d{3,5})?$")
|
|
|
|
def check_vat_ph(self, vat):
|
|
return len(vat) >= 11 and len(vat) <= 17 and self.__check_vat_ph_re.match(vat)
|
|
|
|
def check_vat_ru(self, vat):
|
|
'''
|
|
Check Russia VAT number.
|
|
Method copied from vatnumber 1.2 lib https://code.google.com/archive/p/vatnumber/
|
|
'''
|
|
if len(vat) != 10 and len(vat) != 12:
|
|
return False
|
|
try:
|
|
int(vat)
|
|
except ValueError:
|
|
return False
|
|
|
|
if len(vat) == 10:
|
|
check_sum = 2 * int(vat[0]) + 4 * int(vat[1]) + 10 * int(vat[2]) + \
|
|
3 * int(vat[3]) + 5 * int(vat[4]) + 9 * int(vat[5]) + \
|
|
4 * int(vat[6]) + 6 * int(vat[7]) + 8 * int(vat[8])
|
|
check = check_sum % 11
|
|
if check % 10 != int(vat[9]):
|
|
return False
|
|
else:
|
|
check_sum1 = 7 * int(vat[0]) + 2 * int(vat[1]) + 4 * int(vat[2]) + \
|
|
10 * int(vat[3]) + 3 * int(vat[4]) + 5 * int(vat[5]) + \
|
|
9 * int(vat[6]) + 4 * int(vat[7]) + 6 * int(vat[8]) + \
|
|
8 * int(vat[9])
|
|
check = check_sum1 % 11
|
|
|
|
if check != int(vat[10]):
|
|
return False
|
|
check_sum2 = 3 * int(vat[0]) + 7 * int(vat[1]) + 2 * int(vat[2]) + \
|
|
4 * int(vat[3]) + 10 * int(vat[4]) + 3 * int(vat[5]) + \
|
|
5 * int(vat[6]) + 9 * int(vat[7]) + 4 * int(vat[8]) + \
|
|
6 * int(vat[9]) + 8 * int(vat[10])
|
|
check = check_sum2 % 11
|
|
if check != int(vat[11]):
|
|
return False
|
|
return True
|
|
|
|
# VAT validation in Turkey, contributed by # Levent Karakas @ Eska Yazilim A.S.
|
|
def check_vat_tr(self, vat):
|
|
|
|
if not (10 <= len(vat) <= 11):
|
|
return False
|
|
try:
|
|
int(vat)
|
|
except ValueError:
|
|
return False
|
|
|
|
# check vat number (vergi no)
|
|
if len(vat) == 10:
|
|
sum = 0
|
|
check = 0
|
|
for f in range(0, 9):
|
|
c1 = (int(vat[f]) + (9-f)) % 10
|
|
c2 = (c1 * (2 ** (9-f))) % 9
|
|
if (c1 != 0) and (c2 == 0):
|
|
c2 = 9
|
|
sum += c2
|
|
if sum % 10 == 0:
|
|
check = 0
|
|
else:
|
|
check = 10 - (sum % 10)
|
|
return int(vat[9]) == check
|
|
|
|
# check personal id (tc kimlik no)
|
|
if len(vat) == 11:
|
|
c1a = 0
|
|
c1b = 0
|
|
c2 = 0
|
|
for f in range(0, 9, 2):
|
|
c1a += int(vat[f])
|
|
for f in range(1, 9, 2):
|
|
c1b += int(vat[f])
|
|
c1 = ((7 * c1a) - c1b) % 10
|
|
for f in range(0, 10):
|
|
c2 += int(vat[f])
|
|
c2 = c2 % 10
|
|
return int(vat[9]) == c1 and int(vat[10]) == c2
|
|
|
|
return False
|
|
|
|
def check_vat_ua(self, vat):
|
|
res = []
|
|
for partner in self:
|
|
if partner.commercial_partner_id.country_id.code == 'MX':
|
|
if len(vat) == 10:
|
|
res.append(True)
|
|
else:
|
|
res.append(False)
|
|
elif partner.commercial_partner_id.is_company:
|
|
if len(vat) == 12:
|
|
res.append(True)
|
|
else:
|
|
res.append(False)
|
|
else:
|
|
if len(vat) == 10 or len(vat) == 9:
|
|
res.append(True)
|
|
else:
|
|
res.append(False)
|
|
return all(res)
|
|
|
|
def check_vat_ve(self, vat):
|
|
# https://tin-check.com/en/venezuela/
|
|
# https://techdocs.broadcom.com/us/en/symantec-security-software/information-security/data-loss-prevention/15-7/About-content-packs/What-s-included-in-Content-Pack-2021-02/Updated-data-identifiers-in-Content-Pack-2021-02/venezuela-national-identification-number-v115451096-d327e108002-CP2021-02.html
|
|
# Sources last visited on 2022-12-09
|
|
|
|
# VAT format: (kind - 1 letter)(identifier number - 8-digit number)(check digit - 1 digit)
|
|
vat_regex = re.compile(r"""
|
|
([vecjpg]) # group 1 - kind
|
|
(
|
|
(?P<optional_1>-)? # optional '-' (1)
|
|
[0-9]{2}
|
|
(?(optional_1)(?P<optional_2>[.])?) # optional '.' (2) only if (1)
|
|
[0-9]{3}
|
|
(?(optional_2)[.]) # mandatory '.' if (2)
|
|
[0-9]{3}
|
|
(?(optional_1)-) # mandatory '-' if (1)
|
|
) # group 2 - identifier number
|
|
([0-9]{1}) # group X - check digit
|
|
""", re.VERBOSE | re.IGNORECASE)
|
|
|
|
matches = re.fullmatch(vat_regex, vat)
|
|
if not matches:
|
|
return False
|
|
|
|
kind, identifier_number, *_, check_digit = matches.groups()
|
|
kind = kind.lower()
|
|
identifier_number = identifier_number.replace("-", "").replace(".", "")
|
|
check_digit = int(check_digit)
|
|
|
|
if kind == 'v': # Venezuela citizenship
|
|
kind_digit = 1
|
|
elif kind == 'e': # Foreigner
|
|
kind_digit = 2
|
|
elif kind == 'c' or kind == 'j': # Township/Communal Council or Legal entity
|
|
kind_digit = 3
|
|
elif kind == 'p': # Passport
|
|
kind_digit = 4
|
|
else: # Government ('g')
|
|
kind_digit = 5
|
|
|
|
# === Checksum validation ===
|
|
multipliers = [3, 2, 7, 6, 5, 4, 3, 2]
|
|
checksum = kind_digit * 4
|
|
checksum += sum(map(lambda n, m: int(n) * m, identifier_number, multipliers))
|
|
|
|
checksum_digit = 11 - checksum % 11
|
|
if checksum_digit > 9:
|
|
checksum_digit = 0
|
|
|
|
return check_digit == checksum_digit
|
|
|
|
def check_vat_xi(self, vat):
|
|
""" Temporary Nothern Ireland VAT validation following Brexit
|
|
As of January 1st 2021, companies in Northern Ireland have a
|
|
new VAT number starting with XI
|
|
TODO: remove when stdnum is updated to 1.16 in supported distro"""
|
|
check_func = getattr(stdnum.util.get_cc_module('gb', 'vat'), 'is_valid', None)
|
|
if not check_func:
|
|
return len(vat) == 9
|
|
return check_func(vat)
|
|
|
|
def check_vat_in(self, vat):
|
|
#reference from https://www.gstzen.in/a/format-of-a-gst-number-gstin.html
|
|
if vat and len(vat) == 15:
|
|
all_gstin_re = [
|
|
r'[0-9]{2}[a-zA-Z]{5}[0-9]{4}[a-zA-Z]{1}[1-9A-Za-z]{1}[Zz1-9A-Ja-j]{1}[0-9a-zA-Z]{1}', # Normal, Composite, Casual GSTIN
|
|
r'[0-9]{4}[A-Z]{3}[0-9]{5}[UO]{1}[N][A-Z0-9]{1}', #UN/ON Body GSTIN
|
|
r'[0-9]{4}[a-zA-Z]{3}[0-9]{5}[N][R][0-9a-zA-Z]{1}', #NRI GSTIN
|
|
r'[0-9]{2}[a-zA-Z]{4}[a-zA-Z0-9]{1}[0-9]{4}[a-zA-Z]{1}[1-9A-Za-z]{1}[DK]{1}[0-9a-zA-Z]{1}', #TDS GSTIN
|
|
r'[0-9]{2}[a-zA-Z]{5}[0-9]{4}[a-zA-Z]{1}[1-9A-Za-z]{1}[C]{1}[0-9a-zA-Z]{1}' #TCS GSTIN
|
|
]
|
|
return any(re.compile(rx).match(vat) for rx in all_gstin_re)
|
|
return False
|
|
|
|
def check_vat_au(self, vat):
|
|
'''
|
|
The Australian equivalent of a VAT number is an ABN number.
|
|
TFN (Australia Tax file numbers) are private and not to be
|
|
entered into systems or publicly displayed, so ABN numbers
|
|
are the public facing number that legally must be displayed
|
|
on all invoices
|
|
'''
|
|
check_func = getattr(stdnum.util.get_cc_module('au', 'abn'), 'is_valid', None)
|
|
if not check_func:
|
|
vat = vat.replace(" ", "")
|
|
return len(vat) == 11 and vat.isdigit()
|
|
return check_func(vat)
|
|
|
|
def check_vat_nz(self, vat):
|
|
'''
|
|
The New Zealand equivalent of a VAT number is an IRD number (GST number is another name for this).
|
|
IRD/GST numbers must legally must be displayed on all tax invoices.
|
|
https://arthurdejong.org/python-stdnum/doc/1.13/stdnum.nz.ird#module-stdnum.nz.ird
|
|
'''
|
|
check_func = stdnum.util.get_cc_module('nz', 'ird').is_valid
|
|
return check_func(vat)
|
|
|
|
def format_vat_eu(self, vat):
|
|
# Foreign companies that trade with non-enterprises in the EU
|
|
# may have a VATIN starting with "EU" instead of a country code.
|
|
return vat
|
|
|
|
def format_vat_ch(self, vat):
|
|
stdnum_vat_format = getattr(stdnum.util.get_cc_module('ch', 'vat'), 'format', None)
|
|
return stdnum_vat_format('CH' + vat)[2:] if stdnum_vat_format else vat
|
|
|
|
def format_vat_sm(self, vat):
|
|
stdnum_vat_format = stdnum.util.get_cc_module('sm', 'vat').compact
|
|
return stdnum_vat_format('SM' + vat)[2:]
|
|
|
|
def _fix_vat_number(self, vat, country_id):
|
|
code = self.env['res.country'].browse(country_id).code if country_id else False
|
|
vat_country, vat_number = self._split_vat(vat)
|
|
if code and code.lower() != vat_country:
|
|
return vat
|
|
stdnum_vat_fix_func = getattr(stdnum.util.get_cc_module(vat_country, 'vat'), 'compact', None)
|
|
#If any localization module need to define vat fix method for it's country then we give first priority to it.
|
|
format_func_name = 'format_vat_' + vat_country
|
|
format_func = getattr(self, format_func_name, None) or stdnum_vat_fix_func
|
|
if format_func:
|
|
vat_number = format_func(vat_number)
|
|
return vat_country.upper() + vat_number
|
|
|
|
@api.model_create_multi
|
|
def create(self, vals_list):
|
|
for values in vals_list:
|
|
if values.get('vat'):
|
|
country_id = values.get('country_id')
|
|
values['vat'] = self._fix_vat_number(values['vat'], country_id)
|
|
return super(ResPartner, self).create(vals_list)
|
|
|
|
def write(self, values):
|
|
if values.get('vat') and len(self.mapped('country_id')) == 1:
|
|
country_id = values.get('country_id', self.country_id.id)
|
|
values['vat'] = self._fix_vat_number(values['vat'], country_id)
|
|
return super(ResPartner, self).write(values)
|