text: import logging
  
  from django.conf import settings
  from django.contrib import messages
  from django.shortcuts import redirect
  from django.utils.functional import cached_property
  from django.utils.translation import ugettext_lazy as _
  from django.views.generic import TemplateView
  
  from pretix.base.email import get_email_context
  from pretix.base.services.mail import INVALID_ADDRESS, SendMailException, mail
  from pretix.multidomain.urlreverse import eventreverse
  from pretix.presale.forms.user import ResendLinkForm
  from pretix.presale.views import EventViewMixin
  
  
  class ResendLinkView(EventViewMixin, TemplateView):
      template_name = 'pretixpresale/event/resend_link.html'
  
      @cached_property
      def link_form(self):
          return ResendLinkForm(data=self.request.POST if self.request.method == 'POST' else None)
  
      def post(self, request, *args, **kwargs):
          if not self.link_form.is_valid():
              messages.error(self.request, _('We had difficulties processing your input.'))
              return self.get(request, *args, **kwargs)
  
          user = self.link_form.cleaned_data.get('email')
  
          if settings.HAS_REDIS:
              from django_redis import get_redis_connection
              rc = get_redis_connection("redis")
              if rc.exists('pretix_resend_{}'.format(user)):
                  messages.error(request, _('We already sent you an email in the last 24 hours.'))
                  return redirect(eventreverse(self.request.event, 'presale:event.resend_link'))
              else:
                  rc.setex('pretix_resend_{}'.format(user), 3600 * 24, '1')
  
          orders = self.request.event.orders.filter(email__iexact=user)
  
          if not orders:
              user = INVALID_ADDRESS
  
          subject = _('Your orders for {}').format(self.request.event)
          template = self.request.event.settings.mail_text_resend_all_links
          context = get_email_context(event=self.request.event, orders=orders)
          try:
              mail(user, subject, template, context, event=self.request.event, locale=self.request.LANGUAGE_CODE)
          except SendMailException:
              logger = logging.getLogger('pretix.presale.user')
              logger.exception('A mail resending order links to {} could not be sent.'.format(user))
              messages.error(self.request, _('We have trouble sending emails right now, please check back later.'))
              return self.get(request, *args, **kwargs)
  
          messages.success(self.request, _('If there were any orders by this user, they will receive an email with their order codes.'))
          return redirect(eventreverse(self.request.event, 'presale:event.index'))
  
      def get_context_data(self, **kwargs):
          context = super().get_context_data(**kwargs)
          context['form'] = self.link_form
          return context
  