"""Connect Django signals to Chronicle events."""

import logging

logger = logging.getLogger(__name__)


def connect_signals(emitter):
    """Connect Django model signals to Chronicle. No-op if emitter is None."""
    if not emitter:
        return

    from django.db.models.signals import post_save

    def on_post_save(sender, instance, created, **kwargs):
        try:
            emitter.signal(
                signal_name="post_save_create" if created else "post_save_update",
                model=sender.__name__,
                instance_id=str(getattr(instance, "pk", "")),
            )
        except Exception as e:
            logger.debug("Signal Chronicle non-fatal: %s", e)

    post_save.connect(on_post_save)