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.
5 from datetime import date, datetime
6 from urllib import urlencode
7 from django.core.urlresolvers import reverse
8 from django.core.mail import send_mail
9 from django.conf import settings
10 from django.template.loader import render_to_string
11 from django.db import models
12 from django.utils.translation import ugettext_lazy as _, ugettext, override
14 from catalogue.models import Book
15 from catalogue.utils import get_random_hash
16 from polls.models import Poll
17 from django.contrib.sites.models import Site
18 from . import app_settings
21 class Offer(models.Model):
22 """ A fundraiser for a particular book. """
23 author = models.CharField(_('author'), max_length=255)
24 title = models.CharField(_('title'), max_length=255)
25 slug = models.SlugField(_('slug'))
26 description = models.TextField(_('description'), blank=True)
27 target = models.DecimalField(_('target'), decimal_places=2, max_digits=10)
28 start = models.DateField(_('start'), db_index=True)
29 end = models.DateField(_('end'), db_index=True)
30 redakcja_url = models.URLField(_('redakcja URL'), blank=True)
31 book = models.ForeignKey(Book, null=True, blank=True,
32 help_text=_('Published book.'))
33 cover = models.ImageField(_('Cover'), upload_to = 'funding/covers')
34 poll = models.ForeignKey(Poll, help_text = _('Poll'), null = True, blank = True, on_delete = models.SET_NULL)
36 notified_near = models.DateTimeField(_('Near-end notifications sent'), blank=True, null=True)
37 notified_end = models.DateTimeField(_('End notifications sent'), blank=True, null=True)
39 def cover_img_tag(self):
40 return u'<img src="%s" />' % self.cover.url
41 cover_img_tag.short_description = _('Cover preview')
42 cover_img_tag.allow_tags = True
45 verbose_name = _('offer')
46 verbose_name_plural = _('offers')
49 def __unicode__(self):
50 return u"%s - %s" % (self.author, self.title)
52 def get_absolute_url(self):
53 return reverse('funding_offer', args=[self.slug])
55 def save(self, *args, **kw):
56 published_now = (self.book_id is not None and
57 self.pk is not None and
58 type(self).objects.values('book').get(pk=self.pk)['book'] != self.book_id)
59 retval = super(Offer, self).save(*args, **kw)
61 self.notify_published()
65 return self.start <= date.today() <= self.end and self == self.current()
68 return self.sum() >= self.target
74 return self.sum() - self.target
80 """ Returns current fundraiser or None.
82 Current fundraiser is the one that:
83 - has already started,
85 - if there's more than one of those, it's the one that ends last.
89 objects = cls.objects.filter(start__lte=today, end__gte=today).order_by('-end')
97 """ QuerySet for all past fundraisers. """
98 objects = cls.public()
99 current = cls.current()
100 if current is not None:
101 objects = objects.exclude(pk=current.pk)
106 """ QuerySet for all current and past fundraisers. """
108 return cls.objects.filter(start__lte=today)
110 def get_perks(self, amount=None):
111 """ Finds all the perks for the offer.
113 If amount is provided, returns the perks you get for it.
116 perks = Perk.objects.filter(
117 models.Q(offer=self) | models.Q(offer=None)
118 ).exclude(end_date__lt=date.today())
119 if amount is not None:
120 perks = perks.filter(price__lte=amount)
123 def funding_payed(self):
124 """ QuerySet for all completed payments for the offer. """
125 return Funding.payed().filter(offer=self)
128 return self.funding_payed().order_by('-amount', 'payed_at')
131 """ The money gathered. """
132 return self.funding_payed().aggregate(s=models.Sum('amount'))['s'] or 0
134 def notify_all(self, subject, template_name, extra_context=None):
135 Funding.notify_funders(
136 subject, template_name, extra_context,
137 query_filter=models.Q(offer=self)
140 def notify_end(self, force=False):
141 if not force and self.notified_end: return
142 assert not self.is_current()
144 _('The fundraiser has ended!'),
145 'funding/email/end.txt', {
147 'is_win': self.is_win(),
148 'remaining': self.remaining(),
149 'current': self.current(),
151 self.notified_end = datetime.now()
154 def notify_near(self, force=False):
155 if not force and self.notified_near: return
156 assert self.is_current()
158 need = self.target - sum_
160 _('The fundraiser will end soon!'),
161 'funding/email/near.txt', {
162 'days': (self.end - date.today()).days + 1,
164 'is_win': self.is_win(),
168 self.notified_near = datetime.now()
171 def notify_published(self):
172 assert self.book is not None
174 _('The book you helped fund has been published.'),
175 'funding/email/published.txt', {
178 'author': ", ".join(a[0] for a in self.book.related_info()['tags']['author']),
179 'current': self.current(),
183 class Perk(models.Model):
186 If no attached to a particular Offer, applies to all.
189 offer = models.ForeignKey(Offer, verbose_name=_('offer'), null=True, blank=True)
190 price = models.DecimalField(_('price'), decimal_places=2, max_digits=10)
191 name = models.CharField(_('name'), max_length=255)
192 long_name = models.CharField(_('long name'), max_length=255)
193 end_date = models.DateField(_('end date'), null=True, blank=True)
196 verbose_name = _('perk')
197 verbose_name_plural = _('perks')
198 ordering = ['-price']
200 def __unicode__(self):
201 return "%s (%s%s)" % (self.name, self.price, u" for %s" % self.offer if self.offer else "")
204 class Funding(models.Model):
205 """ A person paying in a fundraiser.
207 The payment was completed if and only if payed_at is set.
210 offer = models.ForeignKey(Offer, verbose_name=_('offer'))
211 name = models.CharField(_('name'), max_length=127, blank=True)
212 email = models.EmailField(_('email'), blank=True, db_index=True)
213 amount = models.DecimalField(_('amount'), decimal_places=2, max_digits=10)
214 payed_at = models.DateTimeField(_('payed at'), null=True, blank=True, db_index=True)
215 perks = models.ManyToManyField(Perk, verbose_name=_('perks'), blank=True)
216 language_code = models.CharField(max_length = 2, null = True, blank = True)
217 notifications = models.BooleanField(_('notifications'), default=True, db_index=True)
218 notify_key = models.CharField(max_length=32)
221 verbose_name = _('funding')
222 verbose_name_plural = _('fundings')
223 ordering = ['-payed_at']
227 """ QuerySet for all completed payments. """
228 return cls.objects.exclude(payed_at=None)
230 def __unicode__(self):
231 return unicode(self.offer)
233 def get_absolute_url(self):
234 return reverse('funding_funding', args=[self.pk])
236 def get_disable_notifications_url(self):
237 return "%s?%s" % (reverse("funding_disable_notifications"),
240 'key': self.notify_key,
243 def save(self, *args, **kwargs):
244 if self.email and not self.notify_key:
245 self.notify_key = get_random_hash(self.email)
246 return super(Funding, self).save(*args, **kwargs)
249 def notify_funders(cls, subject, template_name, extra_context=None,
250 query_filter=None, payed_only=True):
251 funders = cls.objects.exclude(email="").filter(notifications=True)
253 funders = funders.exclude(payed_at=None)
254 if query_filter is not None:
255 funders = funders.filter(query_filter)
257 for funder in funders:
258 if funder.email in emails:
260 emails.add(funder.email)
261 funder.notify(subject, template_name, extra_context)
263 def notify(self, subject, template_name, extra_context=None):
266 'site': Site.objects.get_current(),
269 context.update(extra_context)
270 with override(self.language_code or app_settings.DEFAULT_LANGUAGE):
272 render_to_string(template_name, context),
273 getattr(settings, 'CONTACT_EMAIL', 'wolnelektury@nowoczesnapolska.org.pl'),
278 def disable_notifications(self):
279 """Disables all notifications for this e-mail address."""
280 type(self).objects.filter(email=self.email).update(notifications=False)
283 # Register the Funding model with django-getpaid for payments.
284 getpaid.register_to_payment(Funding, unique=False, related_name='payment')
287 class Spent(models.Model):
288 """ Some of the remaining money spent on a book. """
289 book = models.ForeignKey(Book)
290 amount = models.DecimalField(_('amount'), decimal_places=2, max_digits=10)
291 timestamp = models.DateField(_('when'))
294 verbose_name = _('money spent on a book')
295 verbose_name_plural = _('money spent on books')
296 ordering = ['-timestamp']
298 def __unicode__(self):
299 return u"Spent: %s" % unicode(self.book)
302 def new_payment_query_listener(sender, order=None, payment=None, **kwargs):
303 """ Set payment details for getpaid. """
304 payment.amount = order.amount
305 payment.currency = 'PLN'
306 getpaid.signals.new_payment_query.connect(new_payment_query_listener)
309 def user_data_query_listener(sender, order, user_data, **kwargs):
310 """ Set user data for payment. """
311 user_data['email'] = order.email
312 getpaid.signals.user_data_query.connect(user_data_query_listener)
314 def payment_status_changed_listener(sender, instance, old_status, new_status, **kwargs):
315 """ React to status changes from getpaid. """
316 if old_status != 'paid' and new_status == 'paid':
317 instance.order.payed_at = datetime.now()
318 instance.order.save()
319 if instance.order.email:
320 instance.order.notify(
321 _('Thank you for your support!'),
322 'funding/email/thanks.txt'
324 getpaid.signals.payment_status_changed.connect(payment_status_changed_listener)