# Copyright (c) 2014-2016 Hewlett Packard Enterprise Development LP
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from requestbuilder import Arg, Filter, GenericTagFilter

from euca2ools.commands.ec2 import EC2Request


class DescribeDhcpOptions(EC2Request):
    DESCRIPTION = 'Show information about VPC DHCP option sets'
    ARGS = [Arg('DhcpOptionsId', metavar='DHCPOPTS', nargs='*',
                help='limit results to specific DHCP option sets')]
    FILTERS = [Filter('dhcp-options-id', help='dhcp option set ID'),
               Filter('key',
                      help='key for one of the options (e.g. domain-name)'),
               Filter('tag-key',
                      help='key of a tag assigned to the DHCP option set'),
               Filter('tag-value',
                      help='value of a tag assigned to the DHCP option set'),
               GenericTagFilter('tag:KEY',
                                help='specific tag key/value combination'),
               Filter('value', help='value for one of the options')]

    LIST_TAGS = ['dhcpConfigurationSet', 'dhcpOptionsSet', 'tagSet',
                 'valueSet']

    def print_result(self, result):
        for dopt in result.get('dhcpOptionsSet', []):
            self.print_dhcp_options(dopt)