src/paypal/views.py

   1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 from decimal import Decimal
   5
   6 from django.contrib.auth.decorators import login_required
   7 from django.http import Http404
   8 from django.http.response import HttpResponseRedirect, HttpResponseForbidden
   9 from django.shortcuts import get_object_or_404, render, redirect
  10
  11 from api.utils import HttpResponseAppRedirect
  12 from club.models import Schedule
  13 from paypal.rest import execute_agreement, check_agreement, agreement_approval_url
  14 from paypal.models import BillingAgreement, BillingPlan
  15
  16
  17 def paypal_init(request, key):
  18     schedule = get_object_or_404(Schedule, key=key)
  19     schedule.method = 'paypal'
  20     schedule.save(update_fields=['method'])
  21     app = request.GET.get('app')
  22     return redirect(agreement_approval_url(schedule.amount, schedule.key, app=app))
  23
  24
  25 @login_required
  26 def paypal_return(request, key, app=False):
  27     schedule = get_object_or_404(Schedule, key=key)
  28
  29     token = request.GET.get('token')
  30     if not token:
  31         raise Http404
  32     if not BillingAgreement.objects.filter(token=token):
  33         resource = execute_agreement(token)
  34         if resource.id:
  35             amount = int(Decimal(resource.plan.payment_definitions[0].amount['value']))
  36             plan = BillingPlan.objects.get(amount=amount)
  37             active = check_agreement(resource.id) or False
  38             BillingAgreement.objects.create(
  39                 agreement_id=resource.id, schedule=schedule, plan=plan, active=active, token=token)
  40             if active:
  41                 schedule.set_payed()
  42     else:
  43         resource = None
  44     if app:
  45         if getattr(resource, 'error', None):
  46             return HttpResponseAppRedirect('wolnelekturyapp://paypal_error')
  47         else:
  48             return HttpResponseAppRedirect('wolnelekturyapp://paypal_return')
  49     else:
  50         return HttpResponseRedirect(schedule.get_thanks_url())
  51
  52
  53 def paypal_cancel(request):
  54     return render(request, 'paypal/cancel.html', {})