from __future__ import annotations

from celery import shared_task
from django.core.cache import cache
from django.utils import timezone

RUNTIME_HEARTBEAT_KEY = "vacatureradar:runtime:heartbeat"
RUNTIME_HEARTBEAT_TTL_SECONDS = 180


@shared_task(name="apps.core.tasks.record_runtime_heartbeat", ignore_result=True)
def record_runtime_heartbeat() -> str:
    """Record proof that beat dispatch and a worker execution both succeeded."""

    timestamp = timezone.now().isoformat()
    cache.set(RUNTIME_HEARTBEAT_KEY, timestamp, timeout=RUNTIME_HEARTBEAT_TTL_SECONDS)
    return timestamp