from django.core.management.base import BaseCommand, CommandError

from optparse import make_option

from photologue.models import PhotoSize, ImageModel

class Command(BaseCommand):

    help = ('Clears the Photologue cache for the given sizes.')

    args = '[sizes]'

    requires_model_validation = True

    can_import_settings = True

    def handle(self, *args, **options):

        return create_cache(args, options)

def create_cache(sizes, options):

    """

    Clears the cache for the given files

    """

    size_list = [size.strip(' ,') for size in sizes]

    if len(size_list) < 1:

        sizes = PhotoSize.objects.all()

    else:

        sizes = PhotoSize.objects.filter(name__in=size_list)

    if not len(sizes):

        raise CommandError('No photo sizes were found.')

    print 'Flushing cache...'

    for cls in ImageModel.__subclasses__():

        for photosize in sizes:

            print 'Flushing %s size images' % photosize.name

            for obj in cls.objects.all():

                obj.remove_size(photosize)