apps/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 datetime import date
   6 from django.views.decorators.cache import never_cache
   7 from django.conf import settings
   8 from django.core.urlresolvers import reverse
   9 from django.http import Http404
  10 from django.shortcuts import redirect, get_object_or_404
  11 from django.utils.decorators import method_decorator
  12 from django.views.generic import TemplateView, FormView, DetailView, ListView
  13 import getpaid.backends.payu
  14 from getpaid.models import Payment
  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         print offers
  67
  68         ctx['amount'] = amount
  69         ctx['log'] = add_total(amount, mix(
  70             (offers, lambda x: x.end, 'offer'),
  71             (Spent.objects.all(), lambda x: x.timestamp, 'spent'),
  72         ))
  73         return ctx
  74
  75
  76 class OfferDetailView(FormView):
  77     form_class = FundingForm
  78     template_name = "funding/offer_detail.html"
  79     backend = 'getpaid.backends.payu'
  80
  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': settings.FUNDING_DEFAULT})
  96
  97     def get_context_data(self, *args, **kwargs):
  98         ctx = super(OfferDetailView, self).get_context_data(*args, **kwargs)
  99         ctx['object'] = self.object
 100         if self.object.is_current():
 101             ctx['funding_no_show_current'] = True
 102         return ctx
 103
 104     def form_valid(self, form):
 105         funding = form.save()
 106         # Skip getpaid.forms.PaymentMethodForm, go directly to the broker.
 107         payment = Payment.create(funding, self.backend)
 108         gateway_url_tuple = payment.get_processor()(payment).get_gateway_url(self.request)
 109         payment.change_status('in_progress')
 110         return redirect(gateway_url_tuple[0])
 111
 112
 113 class CurrentView(OfferDetailView):
 114     def dispatch(self, request, slug=None):
 115         self.object = Offer.current()
 116         if self.object is None:
 117             raise Http404
 118         elif slug != self.object.slug:
 119             return redirect(reverse('funding_current', args=[self.object.slug]))
 120         return super(CurrentView, self).dispatch(request, slug)
 121
 122
 123 class OfferListView(ListView):
 124     queryset = Offer.public()
 125
 126     def get_context_data(self, *args, **kwargs):
 127         ctx = super(OfferListView, self).get_context_data(*args, **kwargs)
 128         ctx['funding_no_show_current'] = True
 129         return ctx
 130
 131
 132 class ThanksView(TemplateView):
 133     template_name = "funding/thanks.html"
 134
 135     def get_context_data(self, *args, **kwargs):
 136         ctx = super(ThanksView, self).get_context_data(*args, **kwargs)
 137         ctx['offer'] = Offer.current()
 138         ctx['funding_no_show_current'] = True
 139         return ctx
 140
 141 class NoThanksView(TemplateView):
 142     template_name = "funding/no_thanks.html"