src/funding/views.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from django.core.paginator import Paginator, InvalidPage
   6 from django.core.urlresolvers import reverse
   7 from django.http import Http404
   8 from django.shortcuts import get_object_or_404, redirect, render
   9 from django.views.decorators.csrf import csrf_exempt
  10 from django.views.generic import TemplateView, FormView, ListView
  11 from getpaid.models import Payment
  12 from ssify import ssi_included
  13 from ssify.utils import ssi_cache_control
  14 from . import app_settings
  15 from .forms import FundingForm
  16 from .models import Offer, Spent, Funding
  17
  18
  19 def mix(*streams):
  20     substreams = []
  21     for stream, read_date, tag in streams:
  22         iterstream = iter(stream)
  23         try:
  24             item = next(iterstream)
  25         except StopIteration:
  26             pass
  27         else:
  28             substreams.append([read_date(item), item, iterstream, read_date, tag])
  29     while substreams:
  30         i, substream = max(enumerate(substreams), key=lambda x: x[1][0])
  31         yield substream[4], substream[1]
  32         try:
  33             item = next(substream[2])
  34         except StopIteration:
  35             del substreams[i]
  36         else:
  37             substream[0:2] = [substream[3](item), item]
  38
  39
  40 class WLFundView(TemplateView):
  41     template_name = "funding/wlfund.html"
  42
  43     def get_context_data(self):
  44         def add_total(total, it):
  45             for tag, e in it:
  46                 e.total = total
  47                 if tag == 'spent':
  48                     total += e.amount
  49                 else:
  50                     total -= e.wlfund
  51                 yield tag, e
  52
  53         ctx = super(WLFundView, self).get_context_data()
  54         offers = []
  55
  56         for o in Offer.past():
  57             if o.is_win():
  58                 o.wlfund = o.sum() - o.target
  59                 if o.wlfund > 0:
  60                     offers.append(o)
  61             else:
  62                 o.wlfund = o.sum()
  63                 if o.wlfund > 0:
  64                     offers.append(o)
  65         amount = sum(o.wlfund for o in offers) - sum(o.amount for o in Spent.objects.all())
  66
  67         ctx['amount'] = amount
  68         ctx['log'] = add_total(amount, mix(
  69             (offers, lambda x: x.end, 'offer'),
  70             (Spent.objects.all().select_related(), lambda x: x.timestamp, 'spent'),
  71         ))
  72         return ctx
  73
  74
  75 class OfferDetailView(FormView):
  76     form_class = FundingForm
  77     template_name = "funding/offer_detail.html"
  78     backend = 'getpaid.backends.payu'
  79
  80     @csrf_exempt
  81     def dispatch(self, request, slug=None):
  82         if getattr(self, 'object', None) is None:
  83             if slug:
  84                 self.object = get_object_or_404(Offer.public(), 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):
  92         if self.request.method == 'POST':
  93             return form_class(self.object, self.request.POST)
  94         else:
  95             return form_class(self.object, initial={'amount': app_settings.DEFAULT_AMOUNT})
  96
  97     def get_context_data(self, **kwargs):
  98         ctx = super(OfferDetailView, self).get_context_data(**kwargs)
  99         ctx['object'] = self.object
 100         ctx['page'] = self.request.GET.get('page', 1)
 101         if self.object.is_current():
 102             ctx['funding_no_show_current'] = True
 103         return ctx
 104
 105     def form_valid(self, form):
 106         funding = form.save()
 107         # Skip getpaid.forms.PaymentMethodForm, go directly to the broker.
 108         payment = Payment.create(funding, self.backend)
 109         gateway_url_tuple = payment.get_processor()(payment).get_gateway_url(self.request)
 110         payment.change_status('in_progress')
 111         return redirect(gateway_url_tuple[0])
 112
 113
 114 class CurrentView(OfferDetailView):
 115     @csrf_exempt
 116     def dispatch(self, request, slug=None):
 117         self.object = Offer.current()
 118         if self.object is None:
 119             return redirect(reverse('funding'))
 120         elif slug != self.object.slug:
 121             return redirect(reverse('funding_current', args=[self.object.slug]))
 122         return super(CurrentView, self).dispatch(request, slug)
 123
 124
 125 class OfferListView(ListView):
 126     queryset = Offer.public()
 127
 128     def get_context_data(self, **kwargs):
 129         ctx = super(OfferListView, self).get_context_data(**kwargs)
 130         ctx['funding_no_show_current'] = True
 131         return ctx
 132
 133
 134 class ThanksView(TemplateView):
 135     template_name = "funding/thanks.html"
 136
 137     def get_context_data(self, **kwargs):
 138         ctx = super(ThanksView, self).get_context_data(**kwargs)
 139         ctx['offer'] = Offer.current()
 140         ctx['funding_no_show_current'] = True
 141         return ctx
 142
 143
 144 class NoThanksView(TemplateView):
 145     template_name = "funding/no_thanks.html"
 146
 147
 148 class DisableNotifications(TemplateView):
 149     template_name = "funding/disable_notifications.html"
 150
 151     @csrf_exempt
 152     def dispatch(self, request):
 153         self.object = get_object_or_404(Funding, email=request.GET.get('email'), notify_key=request.GET.get('key'))
 154         return super(DisableNotifications, self).dispatch(request)
 155
 156     def post(self, *args, **kwargs):
 157         self.object.disable_notifications()
 158         return redirect(self.request.get_full_path())
 159
 160
 161 def offer_bar(offer, link=False, closeable=False, show_title=True, show_title_calling=True, add_class=""):
 162     if offer:
 163         offer_sum = offer.sum()
 164     else:
 165         return {}
 166     return {
 167         'offer': offer,
 168         'sum': offer_sum,
 169         'is_current': offer.is_current(),
 170         'is_win': offer_sum >= offer.target,
 171         'missing': offer.target - offer_sum,
 172         'percentage': 100 * offer_sum / offer.target,
 173         'link': link,
 174         'closeable': closeable,
 175         'show_title': show_title,
 176         'show_title_calling': show_title_calling,
 177         'add_class': add_class,
 178     }
 179
 180
 181 def render_offer_bar(request, pk, link=False, closeable=False, show_title=True, show_title_calling=True, add_class=""):
 182     offer = get_object_or_404(Offer, pk=pk)
 183     return render(request, "funding/includes/funding.html",
 184                   offer_bar(offer, link, closeable, show_title, show_title_calling, add_class))
 185
 186
 187 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 188 def top_bar(request, pk):
 189     return render_offer_bar(request, pk, link=True, closeable=True, add_class="funding-top-header")
 190
 191
 192 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 193 def list_bar(request, pk):
 194     return render_offer_bar(request, pk, link=True, show_title_calling=False)
 195
 196
 197 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 198 def detail_bar(request, pk):
 199     return render_offer_bar(request, pk, show_title=False)
 200
 201
 202 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 203 def offer_status(request, pk):
 204     offer = get_object_or_404(Offer, pk=pk)
 205     return render(request, "funding/includes/offer_status.html", {'offer': offer})
 206
 207
 208 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 209 def offer_status_more(request, pk):
 210     offer = get_object_or_404(Offer, pk=pk)
 211     return render(request, "funding/includes/offer_status_more.html", {'offer': offer})
 212
 213
 214 @ssi_included(patch_response=[ssi_cache_control(must_revalidate=True)])
 215 def offer_fundings(request, pk, page):
 216     offer = get_object_or_404(Offer, pk=pk)
 217     fundings = offer.funding_payed()
 218     paginator = Paginator(fundings, 10, 2)
 219     try:
 220         page_obj = paginator.page(int(page))
 221     except InvalidPage:
 222         raise Http404
 223     return render(request, "funding/includes/fundings.html", {
 224         "paginator": paginator,
 225         "page_obj": page_obj,
 226         "fundings": page_obj.object_list,
 227     })