# Copyright 2016 Hewlett Packard Enterprise Development LP
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from requestbuilder import Arg, Filter, GenericTagFilter

from euca2ools.commands.ec2 import EC2Request


class DescribeNatGateways(EC2Request):
    DESCRIPTION = 'Describe one or more VPC NAT gateways'
    ARGS = [Arg('NatGatewayId', metavar='NGATEWAY', nargs='*',
                help='limit results to one or more NAT gateways')]
    FILTERS = [Filter('nat-gateway-id', "the Nat gateway's ID"),
               Filter('state',
                      help=' the state of the NAT gateway'),
               Filter('subnet-id', help='the ID of the subnet in which the '
                                        'NAT gateway resides'),
               Filter('vpc-id', help='the ID of the VPC in which the NAT '
                                     'gateway resides'),
               GenericTagFilter('tag:KEY',
                                help='specific tag key/value combination')]

    LIST_TAGS = ['natGatewayAddressSet', 'natGatewaySet']

    def print_result(self, result):
        for natgw in result.get('natGatewaySet') or []:
            self.print_nat_gateway(natgw)
