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from requestbuilder import Arg

from euca2ools.commands.ec2 import EC2Request


class CreateCustomerGateway(EC2Request):
    """
    Create a VPN customer gateway

    This is the external side of a VPN connection.  You will also need to
    create a virtual private gateway with euca-create-vpn-gateway(1).
    """

    ARGS = [Arg('-t', '--type', dest='Type', metavar='ipsec.1', required=True,
                choices=('ipsec.1',),
                help='the type of VPN connection to use (required)'),
            Arg('-i', '--ip', dest='IpAddress', metavar='ADDRESS',
                required=True, help='''the new customer gateway's cloud-facing
                IP address (required)'''),
            Arg('-b', '--bgp-asn', dest='BgpAsn', metavar='ASN',
                help="the new customer gateway's BGP AS number")]

    def print_result(self, result):
        self.print_customer_gateway(result.get('customerGateway') or {})