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, HttpResponseRedirect
   5 from django.shortcuts import get_object_or_404, redirect, render
   6 from django.urls import reverse
   7 from django.contrib.auth.decorators import login_required
   8 from django.views.decorators.csrf import csrf_exempt
   9 from django.views.generic import TemplateView, FormView, ListView
  10 import club.payu.views
  11 from . import app_settings
  12 from .forms import FundingForm
  13 from .models import Offer, Spent, Funding
  14
  15
  16 def mix(*streams):
  17     substreams = []
  18     for stream, read_date, tag in streams:
  19         iterstream = iter(stream)
  20         try:
  21             item = next(iterstream)
  22         except StopIteration:
  23             pass
  24         else:
  25             substreams.append([read_date(item), item, iterstream, read_date, tag])
  26     while substreams:
  27         i, substream = max(enumerate(substreams), key=lambda x: x[1][0])
  28         yield substream[4], substream[1]
  29         try:
  30             item = next(substream[2])
  31         except StopIteration:
  32             del substreams[i]
  33         else:
  34             substream[0:2] = [substream[3](item), item]
  35
  36
  37 class WLFundView(TemplateView):
  38     template_name = "funding/wlfund.html"
  39
  40     def get_context_data(self):
  41         def add_total(total, it):
  42             for tag, e in it:
  43                 e.total = total
  44                 if tag == 'spent':
  45                     total += e.amount
  46                 else:
  47                     total -= e.wlfund
  48                 yield tag, e
  49
  50         ctx = super(WLFundView, self).get_context_data()
  51         offers = []
  52
  53         for o in Offer.past():
  54             if o.is_win():
  55                 o.wlfund = o.sum() - o.target
  56                 if o.wlfund > 0:
  57                     offers.append(o)
  58             else:
  59                 o.wlfund = o.sum()
  60                 if o.wlfund > 0:
  61                     offers.append(o)
  62         amount = sum(o.wlfund for o in offers) - sum(o.amount for o in Spent.objects.all())
  63
  64         ctx['amount'] = amount
  65         ctx['log'] = add_total(amount, mix(
  66             (offers, lambda x: x.end, 'offer'),
  67             (Spent.objects.all().select_related(), lambda x: x.timestamp, 'spent'),
  68         ))
  69         return ctx
  70
  71
  72 class OfferDetailView(FormView):
  73     form_class = FundingForm
  74     template_name = 'funding/offer_detail.html'
  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.request, self.object, self.request.POST)
  96         else:
  97             return form_class(self.request, 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         return redirect(funding.put())
 109
 110
 111 class CurrentView(OfferDetailView):
 112     @csrf_exempt
 113     def dispatch(self, request, slug=None):
 114         self.object = Offer.current()
 115         if self.object is None:
 116             return redirect(reverse('funding'))
 117         elif slug != self.object.slug:
 118             return redirect(reverse('funding_current', args=[self.object.slug]))
 119         return super(CurrentView, self).dispatch(request, slug)
 120
 121
 122 class OfferListView(ListView):
 123     queryset = Offer.public()
 124     template_name = 'funding/offer_list.html'
 125
 126     def get_context_data(self, **kwargs):
 127         ctx = super(OfferListView, self).get_context_data(**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, **kwargs):
 136         ctx = super(ThanksView, self).get_context_data(**kwargs)
 137         ctx['offer'] = Offer.current()
 138         ctx['funding_no_show_current'] = True
 139         return ctx
 140
 141
 142 class NoThanksView(TemplateView):
 143     template_name = "funding/no_thanks.html"
 144
 145
 146 class DisableNotifications(TemplateView):
 147     template_name = "funding/disable_notifications.html"
 148
 149     @csrf_exempt
 150     def dispatch(self, request):
 151         self.object = get_object_or_404(Funding, email=request.GET.get('email'), notify_key=request.GET.get('key'))
 152         return super(DisableNotifications, self).dispatch(request)
 153
 154     def post(self, *args, **kwargs):
 155         self.object.disable_notifications()
 156         return redirect(self.request.get_full_path())
 157
 158
 159 @login_required
 160 def claim(request, key):
 161     funding = get_object_or_404(Funding, notify_key=key)
 162     if funding.user is None:
 163         funding.user = request.user
 164         funding.save()
 165     return HttpResponseRedirect(
 166         funding.offer.book.get_absolute_url() if funding.offer.book is not None
 167         else funding.offer.get_absolute_url()
 168     )
 169
 170
 171 class PayUNotifyView(club.payu.views.NotifyView):
 172     order_model = Funding
 173