"""Automatic event registration notifications."""

import logging

from celery import shared_task

from apps.events.models import Registration
from apps.notifications.services import notify_user
from apps.users.tasks import send_critical_sms

logger = logging.getLogger(__name__)


@shared_task(bind=True, max_retries=3)
def send_registration_confirmation_notification(self, registration_pk: str):
    try:
        registration = Registration.objects.select_related("event", "user").get(pk=registration_pk)
        notify_user(registration.user_id, {
            "type": "event_registration",
            "title": f"ثبت‌نام شما برای «{registration.event.title}» تأیید شد",
            "message": "ثبت‌نام شما در این رویداد تأیید شده است.",
            "level": "success",
            "action_url": f"/events/{registration.event.slug}",
            "entity_type": "event",
            "entity_id": registration.event_id,
            "meta": {"ticket_id": str(registration.ticket_id)},
        })
        return {"sent": True}
    except Exception as exc:
        logger.error("Failed to notify registration confirmation: %s", exc)
        raise self.retry(exc=exc, countdown=60)


@shared_task(bind=True, max_retries=3)
def send_registration_cancellation_notification(self, registration_pk: str):
    try:
        registration = Registration.objects.select_related("event", "user").get(pk=registration_pk)
        notify_user(registration.user_id, {
            "type": "event_cancellation",
            "title": f"ثبت‌نام شما برای «{registration.event.title}» لغو شد",
            "message": "ثبت‌نام شما در این رویداد لغو شد.",
            "level": "warning",
            "action_url": f"/events/{registration.event.slug}",
            "entity_type": "event",
            "entity_id": registration.event_id,
        })
        if registration.user.mobile and registration.user.is_mobile_verified:
            send_critical_sms.delay(registration.user.mobile, "event_cancellation", registration.event.title)
        return {"sent": True}
    except Exception as exc:
        logger.error("Failed to notify registration cancellation: %s", exc)
        raise self.retry(exc=exc, countdown=60)