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 django.views.decorators.cache import never_cache
   6 from django.conf import settings
   7 from django.core.urlresolvers import reverse
   8 from django.http import Http404
   9 from django.shortcuts import redirect, get_object_or_404
  10 from django.utils.decorators import method_decorator
  11 from django.views.generic import TemplateView, FormView, DetailView, ListView
  12 import getpaid.backends.payu
  13 from getpaid.models import Payment
  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         for o in Offer.objects.all():
  55             if o.state() == 'lose':
  56                 o.wlfund = o.sum()
  57                 if o.wlfund > 0:
  58                     offers.append(o)
  59             elif o.state() == 'win':
  60                 o.wlfund = o.sum() - o.target
  61                 if o.wlfund > 0:
  62                     offers.append(o)
  63         amount = sum(o.wlfund for o in offers) - sum(o.amount for o in Spent.objects.all())
  64         print offers
  65
  66         ctx['amount'] = amount
  67         ctx['log'] = add_total(amount, mix(
  68             (offers, lambda x: x.end, 'offer'),
  69             (Spent.objects.all(), 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     def dispatch(self, request, slug=None):
  80         if slug:
  81             self.object = get_object_or_404(Offer.public(), slug=slug)
  82         else:
  83             self.object = Offer.current()
  84             if self.object is None:
  85                 raise Http404
  86         return super(OfferDetailView, self).dispatch(request, slug)
  87
  88     def get_form(self, form_class):
  89         if self.request.method == 'POST':
  90             return form_class(self.object, self.request.POST)
  91         else:
  92             return form_class(self.object, initial={'amount': settings.FUNDING_DEFAULT})
  93
  94     def get_context_data(self, *args, **kwargs):
  95         ctx = super(OfferDetailView, self).get_context_data(*args, **kwargs)
  96         ctx['object'] = self.object
  97         if self.object.is_current():
  98             ctx['funding_no_show_current'] = True
  99         return ctx
 100
 101     def form_valid(self, form):
 102         funding = form.save()
 103         # Skip getpaid.forms.PaymentMethodForm, go directly to the broker.
 104         payment = Payment.create(funding, self.backend)
 105         gateway_url = payment.get_processor()(payment).get_gateway_url(self.request)
 106         payment.change_status('in_progress')
 107         return redirect(gateway_url)
 108
 109
 110 class OfferListView(ListView):
 111     queryset = Offer.public()
 112
 113     def get_context_data(self, *args, **kwargs):
 114         ctx = super(OfferListView, self).get_context_data(*args, **kwargs)
 115         ctx['funding_no_show_current'] = True
 116         return ctx
 117
 118
 119 class ThanksView(TemplateView):
 120     template_name = "funding/thanks.html"
 121
 122     def get_context_data(self, *args, **kwargs):
 123         ctx = super(ThanksView, self).get_context_data(*args, **kwargs)
 124         ctx['funding_no_show_current'] = True
 125         return ctx
 126
 127 class NoThanksView(TemplateView):
 128     template_name = "funding/no_thanks.html"