1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
4 from datetime import date, datetime
5 from urllib.parse import urlencode
6 from django.conf import settings
7 from django.contrib.sites.models import Site
8 from django.core.mail import send_mail
9 from django.db import models
10 from django.dispatch import receiver
11 from django.template.loader import render_to_string
12 from django.urls import reverse
13 from django.utils.timezone import utc
14 from django.utils.translation import ugettext_lazy as _, override
16 from catalogue.models import Book
17 from catalogue.utils import get_random_hash
18 from polls.models import Poll
19 from wolnelektury.utils import cached_render, clear_cached_renders
20 from . import app_settings
23 class Offer(models.Model):
24 """ A fundraiser for a particular book. """
25 author = models.CharField(_('author'), max_length=255)
26 title = models.CharField(_('title'), max_length=255)
27 slug = models.SlugField(_('slug'))
28 description = models.TextField(_('description'), blank=True)
29 target = models.DecimalField(_('target'), decimal_places=2, max_digits=10)
30 start = models.DateField(_('start'), db_index=True)
31 end = models.DateField(_('end'), db_index=True)
32 redakcja_url = models.URLField(_('redakcja URL'), blank=True)
33 book = models.ForeignKey(Book, models.PROTECT, null=True, blank=True, help_text=_('Published book.'))
34 cover = models.ImageField(_('Cover'), upload_to='funding/covers')
35 poll = models.ForeignKey(Poll, help_text=_('Poll'), null=True, blank=True, on_delete=models.SET_NULL)
37 notified_near = models.DateTimeField(_('Near-end notifications sent'), blank=True, null=True)
38 notified_end = models.DateTimeField(_('End notifications sent'), blank=True, null=True)
40 def cover_img_tag(self):
41 return '<img src="%s" />' % self.cover.url
42 cover_img_tag.short_description = _('Cover preview')
43 cover_img_tag.allow_tags = True
46 verbose_name = _('offer')
47 verbose_name_plural = _('offers')
51 return "%s - %s" % (self.author, self.title)
53 def get_absolute_url(self):
54 return reverse('funding_offer', args=[self.slug])
56 def save(self, *args, **kw):
58 self.book_id is not None and self.pk is not None and
59 type(self).objects.values('book').get(pk=self.pk)['book'] != self.book_id)
60 retval = super(Offer, self).save(*args, **kw)
63 self.notify_published()
66 def clear_cache(self):
67 clear_cached_renders(self.top_bar)
68 clear_cached_renders(self.list_bar)
69 clear_cached_renders(self.detail_bar)
70 clear_cached_renders(self.status)
71 clear_cached_renders(self.status_more)
74 return self.start <= date.today() <= self.end and self == self.current()
77 return self.sum() >= self.target
83 return self.sum() - self.target
89 """ Returns current fundraiser or None.
91 Current fundraiser is the one that:
92 - has already started,
94 - if there's more than one of those, it's the one that ends last.
98 objects = cls.objects.filter(start__lte=today, end__gte=today).order_by('-end')
106 """ QuerySet for all past fundraisers. """
107 objects = cls.public()
108 current = cls.current()
109 if current is not None:
110 objects = objects.exclude(pk=current.pk)
115 """ QuerySet for all current and past fundraisers. """
117 return cls.objects.filter(start__lte=today)
119 def get_perks(self, amount=None):
120 """ Finds all the perks for the offer.
122 If amount is provided, returns the perks you get for it.
125 perks = Perk.objects.filter(
126 models.Q(offer=self) | models.Q(offer=None)
127 ).exclude(end_date__lt=date.today())
128 if amount is not None:
129 perks = perks.filter(price__lte=amount)
132 def funding_payed(self):
133 """ QuerySet for all completed payments for the offer. """
134 return Funding.payed().filter(offer=self)
137 return self.funding_payed().order_by('-amount', 'payed_at')
140 """ The money gathered. """
141 return self.funding_payed().aggregate(s=models.Sum('amount'))['s'] or 0
143 def notify_all(self, subject, template_name, extra_context=None):
144 Funding.notify_funders(
145 subject, template_name, extra_context,
146 query_filter=models.Q(offer=self)
149 def notify_end(self, force=False):
150 if not force and self.notified_end:
152 assert not self.is_current()
154 _('The fundraiser has ended!'),
155 'funding/email/end.txt', {
157 'is_win': self.is_win(),
158 'remaining': self.remaining(),
159 'current': self.current(),
161 self.notified_end = datetime.utcnow().replace(tzinfo=utc)
164 def notify_near(self, force=False):
165 if not force and self.notified_near:
167 assert self.is_current()
169 need = self.target - sum_
171 _('The fundraiser will end soon!'),
172 'funding/email/near.txt', {
173 'days': (self.end - date.today()).days + 1,
175 'is_win': self.is_win(),
179 self.notified_near = datetime.utcnow().replace(tzinfo=utc)
182 def notify_published(self):
183 assert self.book is not None
185 _('The book you helped fund has been published.'),
186 'funding/email/published.txt', {
189 'author': self.book.pretty_title(),
190 'current': self.current(),
193 def basic_info(self):
194 offer_sum = self.sum()
198 'is_current': self.is_current(),
199 'is_win': offer_sum >= self.target,
200 'missing': self.target - offer_sum,
201 'percentage': 100 * offer_sum / self.target,
204 'show_title_calling': True,
207 @cached_render('funding/includes/funding.html')
209 ctx = self.basic_info()
213 'add_class': 'funding-top-header',
217 @cached_render('funding/includes/funding.html')
219 ctx = self.basic_info()
222 'show_title_calling': False,
226 @cached_render('funding/includes/funding.html')
227 def detail_bar(self):
228 ctx = self.basic_info()
234 @cached_render('funding/includes/offer_status.html')
236 return {'offer': self}
238 @cached_render('funding/includes/offer_status_more.html')
239 def status_more(self):
240 return {'offer': self}
243 class Perk(models.Model):
246 If no attached to a particular Offer, applies to all.
249 offer = models.ForeignKey(Offer, models.CASCADE, verbose_name=_('offer'), null=True, blank=True)
250 price = models.DecimalField(_('price'), decimal_places=2, max_digits=10)
251 name = models.CharField(_('name'), max_length=255)
252 long_name = models.CharField(_('long name'), max_length=255)
253 end_date = models.DateField(_('end date'), null=True, blank=True)
256 verbose_name = _('perk')
257 verbose_name_plural = _('perks')
258 ordering = ['-price']
261 return "%s (%s%s)" % (self.name, self.price, " for %s" % self.offer if self.offer else "")
264 class Funding(models.Model):
265 """ A person paying in a fundraiser.
267 The payment was completed if and only if payed_at is set.
270 offer = models.ForeignKey(Offer, models.PROTECT, verbose_name=_('offer'))
271 name = models.CharField(_('name'), max_length=127, blank=True)
272 email = models.EmailField(_('email'), blank=True, db_index=True)
273 amount = models.DecimalField(_('amount'), decimal_places=2, max_digits=10)
274 payed_at = models.DateTimeField(_('payed at'), null=True, blank=True, db_index=True)
275 perks = models.ManyToManyField(Perk, verbose_name=_('perks'), blank=True)
276 language_code = models.CharField(max_length=2, null=True, blank=True)
277 notifications = models.BooleanField(_('notifications'), default=True, db_index=True)
278 notify_key = models.CharField(max_length=32)
281 verbose_name = _('funding')
282 verbose_name_plural = _('fundings')
283 ordering = ['-payed_at', 'pk']
287 """ QuerySet for all completed payments. """
288 return cls.objects.exclude(payed_at=None)
291 return str(self.offer)
293 def get_absolute_url(self):
294 return reverse('funding_funding', args=[self.pk])
296 def perk_names(self):
297 return ", ".join(perk.name for perk in self.perks.all())
299 def get_disable_notifications_url(self):
301 reverse("funding_disable_notifications"),
304 'key': self.notify_key,
307 def save(self, *args, **kwargs):
308 if self.email and not self.notify_key:
309 self.notify_key = get_random_hash(self.email)
310 ret = super(Funding, self).save(*args, **kwargs)
311 self.offer.clear_cache()
315 def notify_funders(cls, subject, template_name, extra_context=None, query_filter=None, payed_only=True):
316 funders = cls.objects.exclude(email="").filter(notifications=True)
318 funders = funders.exclude(payed_at=None)
319 if query_filter is not None:
320 funders = funders.filter(query_filter)
322 for funder in funders:
323 if funder.email in emails:
325 emails.add(funder.email)
326 funder.notify(subject, template_name, extra_context)
328 def notify(self, subject, template_name, extra_context=None):
331 'site': Site.objects.get_current(),
334 context.update(extra_context)
335 with override(self.language_code or app_settings.DEFAULT_LANGUAGE):
337 subject, render_to_string(template_name, context), settings.CONTACT_EMAIL, [self.email],
340 def disable_notifications(self):
341 """Disables all notifications for this e-mail address."""
342 type(self).objects.filter(email=self.email).update(notifications=False)
345 # Register the Funding model with django-getpaid for payments.
346 getpaid.register_to_payment(Funding, unique=False, related_name='payment')
349 class Spent(models.Model):
350 """ Some of the remaining money spent on a book. """
351 book = models.ForeignKey(Book, models.PROTECT)
352 amount = models.DecimalField(_('amount'), decimal_places=2, max_digits=10)
353 timestamp = models.DateField(_('when'))
356 verbose_name = _('money spent on a book')
357 verbose_name_plural = _('money spent on books')
358 ordering = ['-timestamp']
361 return "Spent: %s" % str(self.book)
364 @receiver(getpaid.signals.new_payment_query)
365 def new_payment_query_listener(sender, order=None, payment=None, **kwargs):
366 """ Set payment details for getpaid. """
367 payment.amount = order.amount
368 payment.currency = 'PLN'
371 @receiver(getpaid.signals.user_data_query)
372 def user_data_query_listener(sender, order, user_data, **kwargs):
373 """ Set user data for payment. """
374 user_data['email'] = order.email
377 @receiver(getpaid.signals.payment_status_changed)
378 def payment_status_changed_listener(sender, instance, old_status, new_status, **kwargs):
379 """ React to status changes from getpaid. """
380 if old_status != 'paid' and new_status == 'paid':
381 instance.order.payed_at = datetime.utcnow().replace(tzinfo=utc)
382 instance.order.save()
383 if instance.order.email:
384 instance.order.notify(
385 _('Thank you for your support!'),
386 'funding/email/thanks.txt'