# Copyright 2016 Tecnativa - Antonio Espinosa
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).

from stdnum.eu.at_02 import is_valid

from flectra import _, api, fields, models
from flectra.exceptions import ValidationError


class AccountPaymentMode(models.Model):
    _inherit = "account.payment.mode"

    sepa_creditor_identifier = fields.Char(
        string="SEPA Creditor Identifier",
        size=35,
        help="Enter the Creditor Identifier that has been attributed to your "
        "company to make SEPA Direct Debits. If not defined, "
        "SEPA Creditor Identifier from company will be used.\n"
        "This identifier is composed of :\n"
        "- your country ISO code (2 letters)\n"
        "- a 2-digits checkum\n"
        "- a 3-letters business code\n"
        "- a country-specific identifier",
    )

    @api.constrains("sepa_creditor_identifier")
    def _check_sepa_creditor_identifier(self):
        for payment_mode in self:
            ics = payment_mode.sepa_creditor_identifier
            if ics and not is_valid(ics):
                raise ValidationError(
                    _("The SEPA Creditor Identifier '%s' is invalid.") % ics
                )