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

from services.models import IPResource, IPPrefix, Service, ServiceType, ServiceAllocation, Switch
from djadhere.utils import get_active_filter


class Command(BaseCommand):
    def add_arguments(self, parser):
        parser.add_argument('--switch', action='store_true')
        parser.add_argument('--ip', action='store_true')

    def handle(self, *args, **options):
        if options['switch']:
            self.export_switch()
        if options['ip']:
            self.export_ip()
    
    def export_switch(self):
        for switch in Switch.objects.all():
            print()
            print("=== Switch %s ===" % switch.name)
            print(switch.notes)
            for port in switch.ports.all():
                line = "Port %d" % port.port
                if port.service:
                    line += ' - (%s %s) %s' % (port.service.adhesion, port.service.adhesion.adherent, port.service)
                if port.notes:
                    line += ' - %s' % port.notes
                print(line)

    def export_ip(self):
        public_ips = IPResource.objects.filter(category=IPResource.CATEGORY_PUBLIC).values_list('pk', flat=True)
        for prefix in IPPrefix.objects.filter(ipresource__in=public_ips).distinct():
            print("\n=== %s ===\n" % prefix)
            active_ips = prefix.ipresource_set.filter(in_use=True)
            if not active_ips.exists():
                print("empty")
                continue
            elif active_ips.count() < 20:
                ip_set = active_ips
            else:
                ip_set = prefix.ipresource_set
            for ip in ip_set.all():
                line = str(ip)
                if ip.reserved:
                    line += ' - réservé'
                else:
                    try:
                        allocation = ip.allocations.get(active=True)
                    except ServiceAllocation.DoesNotExist:
                        line += ' - disponible'
                        allocation = ip.allocations.order_by('-end').first()
                        if allocation:
                            service = allocation.service
                            end = allocation.end.strftime('%Y%m%d')
                            adhesion = service.adhesion
                            adherent = adhesion.adherent
                            line += ' depuis %s (dernière utilisation : %s %s %s)' % (end, adhesion, adherent, service)
                    else:
                        service = allocation.service
                        start = allocation.start.strftime('%Y%m%d')
                        adhesion = service.adhesion
                        adherent = adhesion.adherent
                        line += ' - %s %s %s (depuis %s)' % (adhesion, adherent, service, start)
                print(line)