from django.core.management.base import BaseCommand
from django.contrib.gis.geos import Point

from services.models import IPResource, Antenna, AntennaAllocation, Tunnel
from djadhere.utils import get_active_filter

import os, json, yaml
from ipaddress import ip_network


class Command(BaseCommand):
    help = 'Import des informatios du cache de disc-air'

    def add_arguments(self, parser):
        parser.add_argument('disc-air', help='Cache disc-air')

    def handle(self, *args, **options):
        cache = options['disc-air']
        for tunnel in Tunnel.objects.all():
            if not os.path.isdir(os.path.join(cache, tunnel.name)):
                continue
            gps_file = os.path.join(cache, '..', 'gps-%s.yaml' % tunnel.name)
            if os.path.isfile(gps_file):
                with open(gps_file) as fd:
                    gps = yaml.load(fd)
            for network in tunnel.networks.all():
                for ip in network.ipresource_set.all():
                    status_file = os.path.join(cache, tunnel.name, ip.ip, 'fd694727ed4810b9d242c45906ea9417')
                    if not os.path.isfile(status_file):
                        continue
                    with open(status_file) as fd:
                        try:
                            status = json.load(fd)
                        except Exception as e:
                            continue
                    try:
                        hostname = status['host']['hostname']
                        mode = status['wireless']['mode']
                        ssid = status['wireless']['essid']
                        mac = status['wireless']['apmac']
                    except KeyError:
                        continue
                    mode = 1 if mode == 'ap' else 2
                    if ip.in_use:
                        update = False
                        antenna = ip.allocations.filter(get_active_filter()).first().antenna # peut faire mieux …
                        if antenna.label:
                            if antenna.label != hostname:
                                #print(ip, ", djadhere:", antenna.label, ", disc-air:", hostname)
                                continue
                        else:
                            #print("update hostname")
                            antenna.label = hostname
                            update = True
                        if antenna.mode:
                            if antenna.mode != mode:
                                #print(ip, ", djadhere:", antenna.mode, ", disc-air:", mode)
                                continue
                        else:
                            #print("update mode")
                            antenna.mode = mode
                            update = True
                        if antenna.ssid:
                            if antenna.ssid != ssid:
                                #print(ip, ", djadhere:", antenna.ssid, ", disc-air:", ssid)
                                continue
                        else:
                            #print("update ssid")
                            antenna.ssid = ssid
                            update = True
                        if antenna.mac:
                            if antenna.mac != mac:
                                #print(ip, ", djadhere:", antenna.mac, ", disc-air:", mac)
                                continue
                        else:
                            #print("update mac")
                            antenna.mac = mac
                            update = True
                        if ip.ip in gps:
                            coords = gps[ip.ip]
                            if len(coords) == 3:
                                latitude, longitude, orientation = coords
                            else:
                                latitude, longitude = coords
                                orientation = None
                            assert(41 < latitude and latitude < 45)
                            assert(1 < longitude and longitude < 2)
                            position = Point(longitude, latitude, srid=4326)
                            if antenna.position:
                                if antenna.position != position:
                                    #print(ip, ", djadhere:", antenna.position, ", disc-air:", position)
                                    continue
                            else:
                                antenna.position = position
                                update = True
                            if antenna.orientation:
                                if antenna.orientation != orientation:
                                    #print(antenna.orientation, orientation)
                                    continue
                            elif orientation:
                                antenna.orientation = orientation
                                update = True
                        if update:
                            antenna.save()
                    else:
                        #print("created")
                        antenna = Antenna.objects.create(label=hostname, mode=mode, ssid=ssid, mac=mac)
                        AntennaAllocation.objects.create(resource=ip, antenna=antenna)