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.core.paginator import Paginator, InvalidPage
   5 from django.http import Http404
   6 from django.shortcuts import get_object_or_404, redirect, render
   7 from django.urls import reverse
   8 from django.views.decorators.csrf import csrf_exempt
   9 from django.views.generic import TemplateView, FormView, ListView
  10 from getpaid.models import Payment
  11 from ssify import ssi_included
  12 from ssify.utils import ssi_cache_control
  13 from . import app_settings
  14 from .forms import FundingForm
  15 from .models import Offer, Spent, Funding
  16
  17
  18 def mix(*streams):
  19     substreams = []
  20     for stream, read_date, tag in streams:
  21         iterstream = iter(stream)
  22         try:
  23             item = next(iterstream)
  24         except StopIteration:
  25             pass
  26         else:
  27             substreams.append([read_date(item), item, iterstream, read_date, tag])
  28     while substreams:
  29         i, substream = max(enumerate(substreams), key=lambda x: x[1][0])
  30         yield substream[4], substream[1]
  31         try:
  32             item = next(substream[2])
  33         except StopIteration:
  34             del substreams[i]
  35         else:
  36             substream[0:2] = [substream[3](item), item]
  37
  38
  39 class WLFundView(TemplateView):
  40     template_name = "funding/wlfund.html"
  41
  42     def get_context_data(self):
  43         def add_total(total, it):
  44             for tag, e in it:
  45                 e.total = total
  46                 if tag == 'spent':
  47                     total += e.amount
  48                 else:
  49                     total -= e.wlfund
  50                 yield tag, e
  51
  52         ctx = super(WLFundView, self).get_context_data()
  53         offers = []
  54
  55         for o in Offer.past():
  56             if o.is_win():
  57                 o.wlfund = o.sum() - o.target
  58                 if o.wlfund > 0:
  59                     offers.append(o)
  60             else:
  61                 o.wlfund = o.sum()
  62                 if o.wlfund > 0:
  63                     offers.append(o)
  64         amount = sum(o.wlfund for o in offers) - sum(o.amount for o in Spent.objects.all())
  65
  66         ctx['amount'] = amount
  67         ctx['log'] = add_total(amount, mix(
  68             (offers, lambda x: x.end, 'offer'),
  69             (Spent.objects.all().select_related(), lambda x: x.timestamp, 'spent'),
  70         ))
  71         return ctx
  72
  73
  74 class OfferDetailView(FormView):
  75     form_class = FundingForm
  76     template_name = "funding/offer_detail.html"
  77     backend = 'getpaid.backends.payu'
  78
  79     @csrf_exempt
  80     def dispatch(self, request, slug=None):
  81         if getattr(self, 'object', None) is None:
  82             if slug:
  83                 self.object = get_object_or_404(Offer.public(), slug=slug)
  84             else:
  85                 self.object = Offer.current()
  86                 if self.object is None:
  87                     raise Http404
  88         return super(OfferDetailView, self).dispatch(request, slug)
  89
  90     def get_form(self, form_class=None):
  91         if form_class is None:
  92             form_class = self.get_form_class()
  93         if self.request.method == 'POST':
  94             return form_class(self.object, self.request.POST)
  95         else:
  96             return form_class(self.object, initial={'amount': app_settings.DEFAULT_AMOUNT})
  97
  98     def get_context_data(self, **kwargs):
  99         ctx = super(OfferDetailView, self).get_context_data(**kwargs)
 100         ctx['object'] = self.object
 101         ctx['page'] = self.request.GET.get('page', 1)
 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())
 160
 161
 162 def offer_bar(offer, link=False, closeable=False, show_title=True, show_title_calling=True, add_class=""):
 163     if offer:
 164         offer_sum = offer.sum()
 165     else:
 166         return {}
 167     return {
 168         'offer': offer,
 169         'sum': offer_sum,
 170         'is_current': offer.is_current(),
 171         'is_win': offer_sum >= offer.target,
 172         'missing': offer.target - offer_sum,
 173         'percentage': 100 * offer_sum / offer.target,
 174         'link': link,
 175         'closeable': closeable,
 176         'show_title': show_title,
 177         'show_title_calling': show_title_calling,
 178         'add_class': add_class,
 179     }
 180
 181
 182 def render_offer_bar(request, pk, link=False, closeable=False, show_title=True, show_title_calling=True, add_class=""):
 183     offer = get_object_or_404(Offer, pk=pk)
 184     return render(request, "funding/includes/funding.html",
 185                   offer_bar(offer, link, closeable, show_title, show_title_calling, add_class))
 186
 187
 188 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 189 def top_bar(request, pk):
 190     return render_offer_bar(request, pk, link=True, closeable=True, add_class="funding-top-header")
 191
 192
 193 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 194 def list_bar(request, pk):
 195     return render_offer_bar(request, pk, link=True, show_title_calling=False)
 196
 197
 198 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 199 def detail_bar(request, pk):
 200     return render_offer_bar(request, pk, show_title=False)
 201
 202
 203 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 204 def offer_status(request, pk):
 205     offer = get_object_or_404(Offer, pk=pk)
 206     return render(request, "funding/includes/offer_status.html", {'offer': offer})
 207
 208
 209 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 210 def offer_status_more(request, pk):
 211     offer = get_object_or_404(Offer, pk=pk)
 212     return render(request, "funding/includes/offer_status_more.html", {'offer': offer})
 213
 214
 215 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 216 def offer_fundings(request, pk, page):
 217     offer = get_object_or_404(Offer, pk=pk)
 218     fundings = offer.funding_payed()
 219     paginator = Paginator(fundings, 10, 2)
 220     try:
 221         page_obj = paginator.page(int(page))
 222     except InvalidPage:
 223         raise Http404
 224     return render(request, "funding/includes/fundings.html", {
 225         "paginator": paginator,
 226         "page_obj": page_obj,
 227         "fundings": page_obj.object_list,
 228     })