src/funding/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 django.http import Http404
   5 from django.shortcuts import get_object_or_404, redirect, render
   6 from django.urls import reverse
   7 from django.views.decorators.csrf import csrf_exempt
   8 from django.views.generic import TemplateView, FormView, ListView
   9 from getpaid.models import Payment
  10 from . import app_settings
  11 from .forms import FundingForm
  12 from .models import Offer, Spent, Funding
  13
  14
  15 def mix(*streams):
  16     substreams = []
  17     for stream, read_date, tag in streams:
  18         iterstream = iter(stream)
  19         try:
  20             item = next(iterstream)
  21         except StopIteration:
  22             pass
  23         else:
  24             substreams.append([read_date(item), item, iterstream, read_date, tag])
  25     while substreams:
  26         i, substream = max(enumerate(substreams), key=lambda x: x[1][0])
  27         yield substream[4], substream[1]
  28         try:
  29             item = next(substream[2])
  30         except StopIteration:
  31             del substreams[i]
  32         else:
  33             substream[0:2] = [substream[3](item), item]
  34
  35
  36 class WLFundView(TemplateView):
  37     template_name = "funding/wlfund.html"
  38
  39     def get_context_data(self):
  40         def add_total(total, it):
  41             for tag, e in it:
  42                 e.total = total
  43                 if tag == 'spent':
  44                     total += e.amount
  45                 else:
  46                     total -= e.wlfund
  47                 yield tag, e
  48
  49         ctx = super(WLFundView, self).get_context_data()
  50         offers = []
  51
  52         for o in Offer.past():
  53             if o.is_win():
  54                 o.wlfund = o.sum() - o.target
  55                 if o.wlfund > 0:
  56                     offers.append(o)
  57             else:
  58                 o.wlfund = o.sum()
  59                 if o.wlfund > 0:
  60                     offers.append(o)
  61         amount = sum(o.wlfund for o in offers) - sum(o.amount for o in Spent.objects.all())
  62
  63         ctx['amount'] = amount
  64         ctx['log'] = add_total(amount, mix(
  65             (offers, lambda x: x.end, 'offer'),
  66             (Spent.objects.all().select_related(), lambda x: x.timestamp, 'spent'),
  67         ))
  68         return ctx
  69
  70
  71 class OfferDetailView(FormView):
  72     form_class = FundingForm
  73     template_name = "funding/offer_detail.html"
  74     backend = 'getpaid.backends.payu'
  75
  76     @csrf_exempt
  77     def dispatch(self, request, slug=None):
  78         if getattr(self, 'object', None) is None:
  79             if slug:
  80                 if request.user.is_staff:
  81                     offers = Offer.objects.all()
  82                 else:
  83                     offers = Offer.public()
  84                 self.object = get_object_or_404(offers, slug=slug)
  85             else:
  86                 self.object = Offer.current()
  87                 if self.object is None:
  88                     raise Http404
  89         return super(OfferDetailView, self).dispatch(request, slug)
  90
  91     def get_form(self, form_class=None):
  92         if form_class is None:
  93             form_class = self.get_form_class()
  94         if self.request.method == 'POST':
  95             return form_class(self.object, self.request.POST)
  96         else:
  97             return form_class(self.object, initial={'amount': app_settings.DEFAULT_AMOUNT})
  98
  99     def get_context_data(self, **kwargs):
 100         ctx = super(OfferDetailView, self).get_context_data(**kwargs)
 101         ctx['object'] = self.object
 102         if self.object.is_current():
 103             ctx['funding_no_show_current'] = True
 104         return ctx
 105
 106     def form_valid(self, form):
 107         funding = form.save()
 108         # Skip getpaid.forms.PaymentMethodForm, go directly to the broker.
 109         payment = Payment.create(funding, self.backend)
 110         gateway_url_tuple = payment.get_processor()(payment).get_gateway_url(self.request)
 111         payment.change_status('in_progress')
 112         return redirect(gateway_url_tuple[0])
 113
 114
 115 class CurrentView(OfferDetailView):
 116     @csrf_exempt
 117     def dispatch(self, request, slug=None):
 118         self.object = Offer.current()
 119         if self.object is None:
 120             return redirect(reverse('funding'))
 121         elif slug != self.object.slug:
 122             return redirect(reverse('funding_current', args=[self.object.slug]))
 123         return super(CurrentView, self).dispatch(request, slug)
 124
 125
 126 class OfferListView(ListView):
 127     queryset = Offer.public()
 128
 129     def get_context_data(self, **kwargs):
 130         ctx = super(OfferListView, self).get_context_data(**kwargs)
 131         ctx['funding_no_show_current'] = True
 132         return ctx
 133
 134
 135 class ThanksView(TemplateView):
 136     template_name = "funding/thanks.html"
 137
 138     def get_context_data(self, **kwargs):
 139         ctx = super(ThanksView, self).get_context_data(**kwargs)
 140         ctx['offer'] = Offer.current()
 141         ctx['funding_no_show_current'] = True
 142         return ctx
 143
 144
 145 class NoThanksView(TemplateView):
 146     template_name = "funding/no_thanks.html"
 147
 148
 149 class DisableNotifications(TemplateView):
 150     template_name = "funding/disable_notifications.html"
 151
 152     @csrf_exempt
 153     def dispatch(self, request):
 154         self.object = get_object_or_404(Funding, email=request.GET.get('email'), notify_key=request.GET.get('key'))
 155         return super(DisableNotifications, self).dispatch(request)
 156
 157     def post(self, *args, **kwargs):
 158         self.object.disable_notifications()
 159         return redirect(self.request.get_full_path())