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re2o/cotisations/payment_methods/comnpay/models.py

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Python

# -*- mode: python; coding: utf-8 -*-
# Re2o est un logiciel d'administration développé initiallement au Rézo Metz. Il
# se veut agnostique au réseau considéré, de manière à être installable en
# quelques clics.
#
# Copyright © 2018 Hugo Levy-Falk
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from django.db import models
from django.shortcuts import render
from django.urls import reverse
from django.utils.translation import ugettext_lazy as _
from cotisations.models import Paiement
from cotisations.payment_methods.mixins import PaymentMethodMixin
from re2o.aes_field import AESEncryptedField
from .comnpay import Transaction
class ComnpayPayment(PaymentMethodMixin, models.Model):
"""
The model allowing you to pay with COMNPAY.
"""
class Meta:
verbose_name = _("ComNpay")
payment = models.OneToOneField(
Paiement,
on_delete=models.CASCADE,
related_name="payment_method_comnpay",
editable=False,
)
payment_credential = models.CharField(
max_length=255, default="", blank=True, verbose_name=_("ComNpay VAT Number")
)
payment_pass = AESEncryptedField(
max_length=255, null=True, blank=True, verbose_name=_("ComNpay secret key")
)
minimum_payment = models.DecimalField(
verbose_name=_("minimum payment"),
help_text=_(
"The minimal amount of money you have to use when paying with"
" ComNpay."
),
max_digits=5,
decimal_places=2,
default=1,
)
production = models.BooleanField(
default=True,
verbose_name=_(
"production mode enabled (production URL, instead of homologation)"
),
)
def return_url_comnpay(self):
if self.production:
return "https://secure.comnpay.com"
else:
return "https://secure.homologation.comnpay.com"
def end_payment(self, invoice, request):
"""
Build a request to start the negociation with Comnpay by using
a facture id, the price and the secret transaction data stored in
the preferences.
"""
host = request.get_host()
p = Transaction(
str(self.payment_credential),
str(self.payment_pass),
"https://"
+ host
+ reverse(
"cotisations:comnpay:accept_payment", kwargs={"factureid": invoice.id}
),
"https://" + host + reverse("cotisations:comnpay:refuse_payment"),
"https://" + host + reverse("cotisations:comnpay:ipn"),
"",
"D",
)
r = {
"action": self.return_url_comnpay(),
"method": "POST",
"content": p.buildSecretHTML(
_("Pay invoice number ") + str(invoice.id),
invoice.prix_total(),
idTransaction=str(invoice.id),
),
"amount": invoice.prix_total(),
}
return render(request, "cotisations/payment.html", r)
def check_price(self, price, *args, **kwargs):
"""Checks that the price meets the requirement to be paid with ComNpay.
"""
return (
(price >= self.minimum_payment),
_(
"In order to pay your invoice with ComNpay, the price must"
" be greater than {} €."
).format(self.minimum_payment),
)