from django.core.management import BaseCommand
from django.db import transaction

from boards.models import GlobalId

__author__ = 'neko259'


class Command(BaseCommand):
    help = 'Removes local global ID cache'

    @transaction.atomic
    def handle(self, *args, **options):
        count = 0
        for global_id in GlobalId.objects.exclude(content__isnull=True).exclude(
                content=''):
            if global_id.is_local() and global_id.content is not None:
                global_id.content = None
                global_id.save()
                global_id.signature_set.all().delete()
                count += 1
        print('Invalidated {} caches.'.format(count))