76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
# chrono - agendas system
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# Copyright (C) 2020 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import copy
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from urllib.parse import urljoin
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from django.conf import settings
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from django.core.mail import send_mail
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from django.core.management.base import BaseCommand
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from django.db.transaction import atomic
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from django.template.loader import render_to_string
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from django.utils import translation
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from django.utils.translation import gettext_lazy as _
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from chrono.agendas.models import Agenda
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from chrono.utils import timezone
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class Command(BaseCommand):
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EMAIL_SUBJECTS = {
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'almost_full': _('Alert: event "%s" is almost full (90%%)'),
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'full': _('Alert: event "%s" is full'),
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'cancelled': _('Alert: event "%s" is cancelled'),
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}
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help = 'Send email notifications'
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def handle(self, **options):
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translation.activate(settings.LANGUAGE_CODE)
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agendas = Agenda.objects.filter(notifications_settings__isnull=False).select_related(
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'notifications_settings'
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)
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for agenda in agendas:
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for notification_type in agenda.notifications_settings.get_notification_types():
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recipients = notification_type.get_recipients()
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if not recipients:
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continue
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status = notification_type.related_field
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filter_kwargs = {status: True, status + '_notification_timestamp__isnull': True}
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events = agenda.event_set.filter(**filter_kwargs)
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for event in events:
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self.send_notification(event, status, recipients)
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def send_notification(self, event, status, recipients):
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ctx = copy.copy(getattr(settings, 'TEMPLATE_VARS', {}))
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ctx.update(
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{
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'event': event,
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'event_url': urljoin(settings.SITE_BASE_URL, event.get_absolute_view_url()),
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'subject': self.EMAIL_SUBJECTS[status] % event,
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}
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)
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ctx.update(settings.TEMPLATE_VARS)
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subject = render_to_string('agendas/emails_subject.txt', ctx).strip()
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body = render_to_string('agendas/event_notification_body.txt', ctx)
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html_body = render_to_string('agendas/event_notification_body.html', ctx)
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timestamp = timezone.now()
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with atomic():
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setattr(event, status + '_notification_timestamp', timestamp)
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event.save()
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send_mail(subject, body, settings.DEFAULT_FROM_EMAIL, recipients, html_message=html_body)
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