import logging

from django.db.models.signals import post_save
from django.dispatch import receiver

from tasks.models import TaskLinkedObject

from .handlers import notify_task_linked_object

logger = logging.getLogger(__name__)


@receiver(post_save, sender=TaskLinkedObject)
def notify_on_task_link_created(sender, instance, created, **kwargs):
    if not created:
        return
    try:
        notify_task_linked_object(instance)
    except Exception as error:
        logger.exception(
            "Task linked object notification failed",
            extra={
                "event": "task.linked_object.notification_failed",
                "task_link_id": instance.id,
                "task_id": instance.task_id,
                "error_type": type(error).__name__,
            },
        )