from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import AbsencePeriod
from calendars.models import Event, EventParticipation

@receiver(post_save, sender=AbsencePeriod)
def handle_absence_period(sender, instance, **kwargs):
    user = instance.user
    events_in_period = Event.objects.filter(
        team=user.team,
        start_time__date__gte=instance.start_date,
        start_time__date__lte=instance.end_date
    )
    for event in events_in_period:
        EventParticipation.objects.update_or_create(
            user=user,
            event=event,
            defaults={'status': 'rejected'}
        )