src/club/models.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 datetime import datetime, timedelta
   5 import os
   6 import tempfile
   7 from django.apps import apps
   8 from django.conf import settings
   9 from django.contrib.sites.models import Site
  10 from django.core.mail import send_mail, EmailMessage
  11 from django.urls import reverse
  12 from django.db import models
  13 from django import template
  14 from django.utils.timezone import now
  15 from django.utils.translation import gettext_lazy as _, ngettext, gettext, get_language
  16 from django_countries.fields import CountryField
  17 from pytz import utc
  18 from catalogue.utils import get_random_hash
  19 from messaging.states import Level
  20 from reporting.utils import render_to_pdf
  21 from .payment_methods import methods
  22 from .payu import models as payu_models
  23 from .civicrm import report_activity
  24 from . import utils
  25
  26
  27 class Club(models.Model):
  28     min_amount = models.IntegerField(_('minimum amount'))
  29     min_for_year = models.IntegerField(_('minimum amount for year'))
  30     default_single_amount = models.IntegerField(_('default single amount'))
  31     default_monthly_amount = models.IntegerField(_('default monthly amount'))
  32
  33     class Meta:
  34         verbose_name = _('club')
  35         verbose_name_plural = _('clubs')
  36
  37     def __str__(self):
  38         return 'Klub'
  39
  40
  41 class SingleAmount(models.Model):
  42     club = models.ForeignKey(Club, models.CASCADE)
  43     amount = models.IntegerField()
  44     description = models.TextField(blank=True)
  45
  46     class Meta:
  47         ordering = ['amount']
  48
  49 class MonthlyAmount(models.Model):
  50     club = models.ForeignKey(Club, models.CASCADE)
  51     amount = models.IntegerField()
  52     description = models.TextField(blank=True)
  53
  54     class Meta:
  55         ordering = ['amount']
  56
  57
  58 class Consent(models.Model):
  59     order = models.IntegerField()
  60     active = models.BooleanField(default=True)
  61     text = models.CharField(max_length=2048)
  62     required = models.BooleanField()
  63
  64     class Meta:
  65         ordering = ['order']
  66
  67     def __str__(self):
  68         return self.text
  69
  70
  71 class Schedule(models.Model):
  72     """ Represents someone taking up a plan. """
  73     key = models.CharField(_('key'), max_length=255, unique=True)
  74     email = models.EmailField(_('email'))
  75     membership = models.ForeignKey('Membership', verbose_name=_('membership'), null=True, blank=True, on_delete=models.SET_NULL)
  76     amount = models.DecimalField(_('amount'), max_digits=10, decimal_places=2)
  77     method = models.CharField(_('method'), max_length=32, choices=[
  78         (m.slug, m.name) for m in methods
  79         ])
  80     monthly = models.BooleanField(_('monthly'), default=True)
  81     yearly = models.BooleanField(_('yearly'), default=False)
  82
  83     source = models.CharField(_('source'), max_length=255, blank=True)
  84
  85     is_cancelled = models.BooleanField(_('cancelled'), default=False)
  86     payed_at = models.DateTimeField(_('payed at'), null=True, blank=True)
  87     started_at = models.DateTimeField(_('started at'), auto_now_add=True)
  88     expires_at = models.DateTimeField(_('expires_at'), null=True, blank=True)
  89     email_sent = models.BooleanField(default=False)
  90
  91     first_name = models.CharField(max_length=255, blank=True)
  92     last_name = models.CharField(max_length=255, blank=True)
  93     phone = models.CharField(max_length=255, blank=True)
  94     postal = models.CharField(max_length=255, blank=True)
  95     postal_code = models.CharField(max_length=255, blank=True)
  96     postal_town = models.CharField(max_length=255, blank=True)
  97     postal_country = CountryField(default='PL', blank=True)
  98
  99     consent = models.ManyToManyField(Consent)
 100
 101     class Meta:
 102         verbose_name = _('schedule')
 103         verbose_name_plural = _('schedules')
 104
 105     def __str__(self):
 106         return self.key
 107
 108     def save(self, *args, **kwargs):
 109         if not self.key:
 110             self.key = get_random_hash(self.email)
 111         super(Schedule, self).save(*args, **kwargs)
 112         self.update_contact()
 113
 114     def initiate_payment(self, request):
 115         return self.get_payment_method().initiate(request, self)
 116
 117     def pay(self, request):
 118         return self.get_payment_method().pay(request, self)
 119
 120     def get_absolute_url(self):
 121         return reverse('club_schedule', args=[self.key])
 122
 123     def get_thanks_url(self):
 124         return reverse('club_thanks', args=[self.key])
 125
 126     def get_payment_method(self):
 127         return [m for m in methods if m.slug == self.method][0]
 128
 129     def get_payment_methods(self):
 130         for method in methods:
 131             if (self.monthly or self.yearly) and method.is_recurring:
 132                 yield method
 133             elif not (self.monthly or self.yearly) and method.is_onetime:
 134                 yield method
 135
 136     def is_expired(self):
 137         return self.expires_at is not None and self.expires_at <= now()
 138
 139     def is_active(self):
 140         return self.payed_at is not None and (self.expires_at is None or self.expires_at > now())
 141
 142     def is_recurring(self):
 143         return self.monthly or self.yearly
 144
 145     def set_payed(self):
 146         since = self.expires_at
 147         n = now()
 148         if since is None or since < n:
 149             since = n
 150         new_exp = self.get_next_installment(since)
 151         if self.payed_at is None:
 152             self.payed_at = n
 153         if self.expires_at is None or self.expires_at < new_exp:
 154             self.expires_at = new_exp
 155             self.save()
 156
 157         if not self.email_sent:
 158             self.send_email()
 159
 160     def get_next_installment(self, date):
 161         if self.yearly:
 162             return utils.add_year(date)
 163         if self.monthly:
 164             return utils.add_month(date)
 165         club = Club.objects.first()
 166         if club is not None and self.amount >= club.min_for_year:
 167             return utils.add_year(date)
 168         return utils.add_month(date)
 169
 170     def get_other_active_recurring(self):
 171         schedules = type(self).objects.exclude(
 172             monthly=False, yearly=False
 173         ).filter(is_cancelled=False, expires_at__gt=now()).exclude(pk=self.pk)
 174         mine_q = models.Q(email=self.email)
 175         if self.membership is not None:
 176             mine_q |= models.Q(membership__user=self.membership.user)
 177         schedules = schedules.filter(mine_q)
 178         return schedules.order_by('-expires_at').first()
 179
 180     def send_email(self):
 181         ctx = {'schedule': self}
 182         send_mail(
 183             template.loader.render_to_string('club/email/thanks_subject.txt', ctx).strip(),
 184             template.loader.render_to_string('club/email/thanks.txt', ctx),
 185             settings.CONTACT_EMAIL, [self.email], fail_silently=False)
 186         self.email_sent = True
 187         self.save()
 188
 189     def send_email_failed_recurring(self):
 190         ctx = {
 191             'schedule': self,
 192             'other': self.get_other_active_recurring(),
 193         }
 194         send_mail(
 195             'Darowizna na Wolne Lektury — problem z płatnością',
 196             template.loader.render_to_string('club/email/failed_recurring.txt', ctx),
 197             settings.CONTACT_EMAIL, [self.email], fail_silently=False
 198         )
 199
 200     def update_contact(self):
 201         Contact = apps.get_model('messaging', 'Contact')
 202         if not self.payed_at:
 203             level = Level.TRIED
 204             since = self.started_at
 205         else:
 206             since = self.payed_at
 207             if self.is_recurring():
 208                 level = Level.RECURRING
 209             else:
 210                 level = Level.SINGLE
 211         Contact.update(self.email, level, since, self.expires_at)
 212
 213
 214
 215
 216
 217 class Membership(models.Model):
 218     """ Represents a user being recognized as a member of the club. """
 219     user = models.OneToOneField(settings.AUTH_USER_MODEL, verbose_name=_('user'), on_delete=models.CASCADE)
 220     created_at = models.DateTimeField(_('created at'), auto_now_add=True)
 221     name = models.CharField(_('name'), max_length=255, blank=True)
 222     manual = models.BooleanField(_('manual'), default=False)
 223     notes = models.CharField(_('notes'), max_length=2048, blank=True)
 224     updated_at = models.DateField(_('updated at'), auto_now=True, blank=True)
 225
 226     class Meta:
 227         verbose_name = _('membership')
 228         verbose_name_plural = _('memberships')
 229
 230     def __str__(self):
 231         return str(self.user)
 232
 233     def save(self, *args, **kwargs):
 234         super().save(*args, **kwargs)
 235         self.update_contact()
 236
 237     def update_contact(self):
 238         email = self.user.email
 239         if not email:
 240             return
 241
 242         Contact = apps.get_model('messaging', 'Contact')
 243         if self.manual:
 244             Contact.update(email, Level.MANUAL_MEMBER, datetime.combine(self.updated_at, datetime.min.time(), utc))
 245         else:
 246             Contact.reset(email)
 247
 248     @classmethod
 249     def is_active_for(cls, user):
 250         if user.is_anonymous:
 251             return False
 252         try:
 253             membership = user.membership
 254         except cls.DoesNotExist:
 255             return False
 256         if membership.manual:
 257             return True
 258         return Schedule.objects.filter(
 259                 expires_at__gt=now(),
 260                 membership__user=user,
 261             ).exists()
 262
 263
 264 class ReminderEmail(models.Model):
 265     days_before = models.SmallIntegerField(_('days before'))
 266     subject = models.CharField(_('subject'), max_length=1024)
 267     body = models.TextField(_('body'))
 268
 269     class Meta:
 270         verbose_name = _('reminder email')
 271         verbose_name_plural = _('reminder emails')
 272         ordering = ['days_before']
 273
 274     def __str__(self):
 275         if self.days_before >= 0:
 276             return ungettext('a day before expiration', '%d days before expiration', n=self.days_before)
 277         else:
 278             return ungettext('a day after expiration', '%d days after expiration', n=-self.days_before)
 279
 280
 281 class Ambassador(models.Model):
 282     name = models.CharField(_('name'), max_length=255)
 283     photo = models.ImageField(_('photo'), blank=True)
 284     text = models.CharField(_('text'), max_length=1024)
 285
 286     class Meta:
 287         verbose_name = _('ambassador')
 288         verbose_name_plural = _('ambassadors')
 289         ordering = ['name']
 290
 291     def __str__(self):
 292         return self.name
 293
 294
 295 ########
 296 #      #
 297 # PayU #
 298 #      #
 299 ########
 300
 301 class PayUOrder(payu_models.Order):
 302     schedule = models.ForeignKey(Schedule, on_delete=models.CASCADE)
 303
 304     def get_amount(self):
 305         return self.schedule.amount
 306
 307     def get_buyer(self):
 308         return {
 309             "email": self.schedule.email,
 310             "language": get_language(),
 311         }
 312
 313     def get_description(self):
 314         return 'Wolne Lektury'
 315
 316     def is_recurring(self):
 317         return self.schedule.get_payment_method().is_recurring
 318
 319     def get_card_token(self):
 320         return self.schedule.payucardtoken_set.order_by('-created_at').first()
 321
 322     def get_notify_url(self):
 323         return "https://{}{}".format(
 324             Site.objects.get_current().domain,
 325             reverse('club_payu_notify', args=[self.pk]))
 326
 327     def get_thanks_url(self):
 328         return self.schedule.get_thanks_url()
 329
 330     def status_updated(self):
 331         if self.status == 'COMPLETED':
 332             self.schedule.set_payed()
 333
 334         elif self.status == 'CANCELED' or self.status.startswith('ERR-'):
 335             if self.is_recurring() and self.schedule.expires_at:
 336                 self.schedule.send_email_failed_recurring()
 337
 338         self.report_activity()
 339
 340     @property
 341     def updated_at(self):
 342         try:
 343             return self.notification_set.all().order_by('-received_at')[0].received_at
 344         except IndexError:
 345             return None
 346
 347     def report_activity(self):
 348         if self.status not in ['COMPLETED', 'CANCELED', 'REJECTED']:
 349             return
 350
 351         if self.status != 'COMPLETED':
 352             name = settings.CIVICRM_ACTIVITIES['Failed contribution']
 353         elif self.is_recurring():
 354             name = settings.CIVICRM_ACTIVITIES['Recurring contribution']
 355         else:
 356             name = settings.CIVICRM_ACTIVITIES['Contribution']
 357
 358         report_activity.delay(
 359             self.schedule.email,
 360             self.schedule.key,
 361             f'payu:{self.id}',
 362             name,
 363             self.updated_at,
 364             {
 365                 'kwota': self.schedule.amount,
 366             }
 367         )
 368
 369     @classmethod
 370     def send_receipt(cls, email, year, resend=False):
 371         Contact = apps.get_model('messaging', 'Contact')
 372         Funding = apps.get_model('funding', 'Funding')
 373         BillingAgreement = apps.get_model('paypal', 'BillingAgreement')
 374         payments = []
 375
 376         try:
 377             contact = Contact.objects.get(email=email)
 378         except Contact.DoesNotExist:
 379             funding = Funding.objects.filter(
 380                 email=email,
 381                 completed_at__year=year,
 382                 notifications=True).order_by('completed_at').first()
 383             if funding is None:
 384                 print('no notifications')
 385                 return
 386             optout = funding.wl_optout_url()
 387         else:
 388             if contact.level == Level.OPT_OUT:
 389                 print('opt-out')
 390                 return
 391             optout = contact.wl_optout_url()
 392
 393         qs = cls.objects.filter(status='COMPLETED', schedule__email=email, completed_at__year=year).order_by('completed_at')
 394         for order in qs:
 395             payments.append({
 396                 'timestamp': order.completed_at,
 397                 'amount': order.get_amount(),
 398             })
 399
 400         for ba in BillingAgreement.objects.filter(schedule__email=email):
 401             payments.extend(ba.get_donations(year))
 402
 403         fundings = Funding.objects.filter(
 404             email=email,
 405             completed_at__year=year
 406         ).order_by('completed_at')
 407         for funding in fundings:
 408             payments.append({
 409                 'timestamp': funding.completed_at,
 410                 'amount': funding.amount,
 411             })
 412
 413         if not payments: return
 414
 415         payments.sort(key=lambda x: x['timestamp'])
 416
 417         ctx = {
 418             "email": email,
 419             "year": year,
 420             "next_year": year + 1,
 421             "total": sum(x['amount'] for x in payments),
 422             "payments": payments,
 423             "optout": optout,
 424             "resend": resend,
 425         }
 426         temp = tempfile.NamedTemporaryFile(prefix='receipt-', suffix='.pdf', delete=False)
 427         temp.close()
 428         render_to_pdf(temp.name, 'club/receipt.texml', ctx, {
 429             "fnp.eps": os.path.join(settings.STATIC_ROOT, "img/fnp.eps"),
 430             })
 431
 432         message = EmailMessage(
 433                 'Odlicz darowiznę na Wolne Lektury od podatku',
 434                 template.loader.render_to_string('club/receipt_email.txt', ctx),
 435                 settings.CONTACT_EMAIL, [email]
 436             )
 437         with open(temp.name, 'rb') as f:
 438             message.attach('wolnelektury-darowizny.pdf', f.read(), 'application/pdf')
 439         message.send()
 440         os.unlink(f.name)
 441
 442
 443 class PayUCardToken(payu_models.CardToken):
 444     schedule = models.ForeignKey(Schedule, on_delete=models.CASCADE)
 445
 446
 447 class PayUNotification(payu_models.Notification):
 448     order = models.ForeignKey(PayUOrder, models.CASCADE, related_name='notification_set')