import argparse
import logging

from uncloud.hack.vm import VM
from uncloud.hack.config import Config
from uncloud.hack.mac import MAC
from uncloud.hack.net import VXLANBridge, DNSRA

from uncloud import UncloudException

arg_parser = argparse.ArgumentParser('hack', add_help=False)
                                     #description="Commands that are unfinished - use at own risk")
arg_parser.add_argument('--create-vm', action='store_true')
arg_parser.add_argument('--last-used-mac', action='store_true')
arg_parser.add_argument('--get-new-mac', action='store_true')

arg_parser.add_argument('--init-network', help="Initialise networking", action='store_true')
arg_parser.add_argument('--create-vxlan', help="Initialise networking", action='store_true')
arg_parser.add_argument('--network', help="/64 IPv6 network")
arg_parser.add_argument('--vxlan-uplink-device', help="The VXLAN underlay device, i.e. eth0")
arg_parser.add_argument('--vni', help="VXLAN ID (decimal)", type=int)
arg_parser.add_argument('--run-dns-ra', action='store_true',
                        help="Provide router advertisements and DNS resolution via dnsmasq")
arg_parser.add_argument('--use-sudo', help="Use sudo for command requiring root!", action='store_true')
arg_parser.add_argument('--memory', help="Size of memory (GB)", type=int)
arg_parser.add_argument('--cores', help="Amount of CPU cores", type=int)
arg_parser.add_argument('--no-db', help="Disable connection to etcd. For local testing only!", action='store_true')


log = logging.getLogger(__name__)


def main(arguments):
    log.debug("args={}".format(arguments))
    config = Config(arguments)

    if arguments['create_vm']:
        print("Creating VM")
        vm = VM(config)
        vm.commandline()

    if arguments['last_used_mac']:
        m = MAC(config)
        print(m.last_used_mac())

    if arguments['get_new_mac']:
        print(MAC(config).get_next())

    #if arguments['init_network']:
    if arguments['create_vxlan']:
        if not arguments['network'] or not arguments['vni'] or not arguments['vxlan_uplink_device']:
            raise UncloudException("Initialising the network requires an IPv6 network and a VNI. You can use fd00::/64 and vni=1 for testing (non production!)")
        vb = VXLANBridge(vni=arguments['vni'],
                         route=arguments['network'],
                         uplinkdev=arguments['vxlan_uplink_device'],
                         use_sudo=arguments['use_sudo'])
        vb._setup_vxlan()
        vb._setup_bridge()
        vb._add_vxlan_to_bridge()
        vb._route_network()

    if arguments['run_dns_ra']:
        if not arguments['network'] or not arguments['vni']:
            raise UncloudException("Providing DNS/RAs requires a /64 IPv6 network and a VNI. You can use fd00::/64 and vni=1 for testing (non production!)")

        dnsra = DNSRA(route=arguments['network'],
                      vni=arguments['vni'],
                      use_sudo=arguments['use_sudo'])
        dnsra._setup_dnsmasq()