from django.core.management.base import BaseCommand
from django.utils import timezone

from datetime import timedelta
from itertools import groupby

from services.models import ServiceAllocation, IPResource, IPResourceState


class Command(BaseCommand):
    help = 'Détection des pannes'

    def handle(self, *args, **options):
        down = IPResource.objects.filter(
                    category=IPResource.CATEGORY_PUBLIC,
                    last_state__state=IPResourceState.STATE_DOWN,
                    last_time_up__gt=timezone.now()-timedelta(minutes=5))
        allocations = ServiceAllocation.objects.filter(resource__pk__in=down)
        #allocations = allocations.values('resource', 'route')
        allocations = sorted(allocations, key=lambda a: a.route.pk)
        for route, allocs in groupby(allocations, key=lambda a: a.route.pk):
            allocs = list(allocs)
            route = allocs[0].route
            print("%s: %d" % (route, len(allocs)))
            for alloc in allocs:
                print("\t%s" % alloc.resource)
            if len(allocs) >= 4:
                logger.info('%s %s' % (route, allocs))
        self.stdout.write(self.style.SUCCESS('Aucune panne détectée.'))