Introduce notifications app and integrate emails
Add a new notifications app (models, serializers, views, admin, tasks, consumers, routing, urls, tests) with Notification.notify for in-app websocket pushes and optional email delivery. Centralize email sending in notifications.tasks.send_email_with_context and re-export it from account.tasks for compatibility. Update account and commerce and advertisement tasks to use Notification.notify/_notify_order and the new email helper; adjust order/notification tasks to consolidate logic. Wire notifications into ASGI routing, settings and URL conf. Misc: handle OSError when importing weasyprint, add tmp/ to .gitignore, add local .claude PowerShell checks, add social.blog skeleton, and remove legacy ews-component test files.
This commit is contained in:
David Bruno Vontor
145
backend/notifications/models.py
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145
backend/notifications/models.py
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import logging
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from django.db import models
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from account.models import CustomUser
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from vontor_cz.models import SoftDeleteModel
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logger = logging.getLogger(__name__)
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class Notification(SoftDeleteModel):
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class Type(models.TextChoices):
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SYSTEM = "system", "Systém"
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ORDER = "order", "Objednávka"
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PAYMENT = "payment", "Platba"
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SOCIAL = "social", "Sociální"
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CHAT = "chat", "Chat"
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ADVERTISEMENT = "advertisement", "Inzerát"
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title = models.CharField(max_length=200, help_text="Předmět oznámení.")
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text = models.TextField(help_text="Obsah oznámení.")
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notification_type = models.CharField(
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max_length=20,
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choices=Type.choices,
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default=Type.SYSTEM,
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help_text="Kategorie oznámení — používá se pro ikonky a filtrování na frontendu.",
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)
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action_url = models.CharField(
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max_length=500,
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null=True,
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blank=True,
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help_text="Volitelný odkaz na detail (např. '/objednavky/123/').",
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)
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created_at = models.DateTimeField(auto_now_add=True)
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user = models.ForeignKey(
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CustomUser, on_delete=models.CASCADE, null=True, related_name='notifications',
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help_text="Příjemce oznámení.",
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)
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bulk = models.BooleanField(
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default=False,
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help_text="True, pokud bylo oznámení vytvořeno hromadně pro více uživatelů.",
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)
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is_read = models.BooleanField(default=False)
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read_at = models.DateTimeField(null=True, blank=True)
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send_email = models.BooleanField(
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default=False,
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help_text="True, pokud byl zároveň odeslán e-mail.",
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)
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email_subject = models.CharField(max_length=255, null=True, blank=True)
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email_template_path = models.CharField(max_length=255, null=True, blank=True)
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class Meta:
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ordering = ["-created_at"]
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def __str__(self):
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return self.title
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@classmethod
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def notify(cls, user=None, title=None, text=None, *, users=None,
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notification_type=None, action_url=None,
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email_subject=None, template_path=None,
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email_context=None, attachments=None, bulk=False):
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"""Create an in-app notification and optionally send an email + WebSocket push.
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Modes:
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• Single — user=<CustomUser> → returns Notification
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• Bulk — users=<list|qs> → returns list[Notification]
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notification_type controls the frontend icon/colour (default: system).
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action_url is an optional relative path the bell badge links to.
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If template_path is set, an email is dispatched (Celery if CELERY_ENABLED, else sync).
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"""
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if users is not None:
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return [
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cls.notify(
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user=u, title=title, text=text,
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notification_type=notification_type, action_url=action_url,
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email_subject=email_subject, template_path=template_path,
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email_context=email_context, attachments=attachments,
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bulk=True,
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)
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for u in users
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]
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if user is None:
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raise ValueError("Notification.notify() requires either 'user' or 'users'.")
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notification = cls.objects.create(
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user=user,
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title=title,
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text=text,
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notification_type=notification_type or cls.Type.SYSTEM,
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action_url=action_url,
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bulk=bulk,
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send_email=bool(template_path),
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email_subject=email_subject,
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email_template_path=template_path,
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)
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# Real-time push via WebSocket
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try:
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from channels.layers import get_channel_layer
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from asgiref.sync import async_to_sync
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channel_layer = get_channel_layer()
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if channel_layer:
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async_to_sync(channel_layer.group_send)(
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f"notifications_{user.pk}",
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{
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"type": "notification.new",
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"id": notification.pk,
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"title": notification.title,
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"text": notification.text,
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"notification_type": notification.notification_type,
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"action_url": notification.action_url,
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"created_at": notification.created_at.isoformat(),
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},
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)
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except Exception as exc:
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logger.warning("[Notification.notify] WebSocket push failed for user %s: %s", user.pk, exc)
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if template_path and getattr(user, 'email', None):
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try:
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from django.conf import settings
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from notifications.tasks import send_notification_email_task
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ctx = dict(email_context or {})
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if 'user' not in ctx:
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ctx['user'] = user
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kwargs = dict(
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recipient_email=user.email,
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subject=email_subject or title,
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template_path=template_path,
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context=ctx,
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attachments=attachments,
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)
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if getattr(settings, 'CELERY_ENABLED', False):
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send_notification_email_task.delay(**kwargs)
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else:
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send_notification_email_task(**kwargs)
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except Exception as exc:
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logger.warning("[Notification.notify] Email failed for user %s: %s", user.pk, exc)
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return notification
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