from django.core.management.base import BaseCommand

from apps.rss_feeds.models import Feed


class Command(BaseCommand):
    def add_arguments(self, parser):
        parser.add_argument("-f", "--feed", dest="feed", default=None)
        parser.add_argument("-t", "--title", dest="title", default=None)
        parser.add_argument("-V", "--verbose", dest="verbose", action="store_true")
        parser.add_argument("-D", "--delete", dest="delete", action="store_true")

    def handle(self, *args, **options):
        if options["title"]:
            feeds = Feed.objects.filter(feed_title__icontains=options["title"])
        elif options["feed"]:
            feeds = Feed.objects.filter(pk=options["feed"])
        else:
            feeds = Feed.objects.all()

        feeds_count = feeds.count()

        for i in range(0, feeds_count, 100):
            feeds = Feed.objects.all()[i : i + 100]
            for feed in feeds.iterator():
                feed.count_subscribers(verbose=options["verbose"])

        if options["delete"]:
            print("# Deleting old feeds...")
            old_feeds = Feed.objects.filter(num_subscribers=0)
            for feed in old_feeds:
                feed.count_subscribers(verbose=True)
                if feed.num_subscribers == 0:
                    print((" ---> Deleting: [%s] %s" % (feed.pk, feed)))
                    feed.delete()