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re2o/cotisations/payment.py
2018-06-17 15:04:05 +02:00

141 lines
4.1 KiB
Python

"""Payment
Here are defined some views dedicated to online payement.
"""
from collections import OrderedDict
from django.urls import reverse
from django.shortcuts import redirect, get_object_or_404
from django.contrib.auth.decorators import login_required
from django.contrib import messages
from django.views.decorators.csrf import csrf_exempt
from django.utils.datastructures import MultiValueDictKeyError
from django.utils.translation import ugettext as _
from django.http import HttpResponse, HttpResponseBadRequest
from preferences.models import AssoOption
from .models import Facture
from .payment_utils.comnpay import Payment as ComnpayPayment
@csrf_exempt
@login_required
def accept_payment(request, factureid):
"""
The view called when an online payment has been accepted.
"""
facture = get_object_or_404(Facture, id=factureid)
messages.success(
request,
_("The payment of %(amount)s € has been accepted.") % {
'amount': facture.prix()
}
)
return redirect(reverse(
'users:profil',
kwargs={'userid': request.user.id}
))
@csrf_exempt
@login_required
def refuse_payment(request):
"""
The view called when an online payment has been refused.
"""
messages.error(
request,
_("The payment has been refused.")
)
return redirect(reverse(
'users:profil',
kwargs={'userid': request.user.id}
))
@csrf_exempt
def ipn(request):
"""
The view called by Comnpay server to validate the transaction.
Verify that we can firmly save the user's action and notify
Comnpay with 400 response if not or with a 200 response if yes
"""
p = ComnpayPayment()
order = ('idTpe', 'idTransaction', 'montant', 'result', 'sec', )
try:
data = OrderedDict([(f, request.POST[f]) for f in order])
except MultiValueDictKeyError:
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
if not p.validSec(data, AssoOption.get_cached_value('payment_pass')):
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
result = True if (request.POST['result'] == 'OK') else False
idTpe = request.POST['idTpe']
idTransaction = request.POST['idTransaction']
# Checking that the payment is actually for us.
if not idTpe == AssoOption.get_cached_value('payment_id'):
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
try:
factureid = int(idTransaction)
except ValueError:
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
facture = get_object_or_404(Facture, id=factureid)
# Checking that the payment is valid
if not result:
# Payment failed: Cancelling the invoice operation
facture.delete()
# And send the response to Comnpay indicating we have well
# received the failure information.
return HttpResponse("HTTP/1.1 200 OK")
facture.valid = True
facture.save()
# Everything worked we send a reponse to Comnpay indicating that
# it's ok for them to proceed
return HttpResponse("HTTP/1.0 200 OK")
def comnpay(facture, 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 = ComnpayPayment(
str(AssoOption.get_cached_value('payment_id')),
str(AssoOption.get_cached_value('payment_pass')),
'https://' + host + reverse(
'cotisations:accept_payment',
kwargs={'factureid': facture.id}
),
'https://' + host + reverse('cotisations:refuse_payment'),
'https://' + host + reverse('cotisations:ipn'),
"",
"D"
)
r = {
'action': 'https://secure.homologation.comnpay.com',
'method': 'POST',
'content': p.buildSecretHTML(
"Rechargement du solde",
facture.prix(),
idTransaction=str(facture.id)
),
'amount': facture.prix,
}
return r
# The payment systems supported by re2o
PAYMENT_SYSTEM = {
'COMNPAY': comnpay,
'NONE': None
}