# Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# Author: Endre Karlson <endre.karlson@hp.com>
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

import logging

from cliff import command
from cliff import lister
from cliff import show
import six

from designateclient import utils
from designateclient.v2.cli import common
from designateclient.v2.utils import get_all


LOG = logging.getLogger(__name__)


def _format_blacklist(blacklist):
    # Remove unneeded fields for display output formatting
    blacklist.pop('links', None)


class ListBlacklistsCommand(lister.Lister):
    """List blacklists"""

    columns = ['id', 'pattern', 'description']

    def get_parser(self, prog_name):
        parser = super(ListBlacklistsCommand, self).get_parser(prog_name)

        common.add_all_common_options(parser)

        return parser

    def take_action(self, parsed_args):
        client = self.app.client_manager.dns
        common.set_all_common_headers(client, parsed_args)

        cols = self.columns
        data = get_all(client.blacklists.list)
        return cols, (utils.get_item_properties(s, cols) for s in data)


class ShowBlacklistCommand(show.ShowOne):
    """Show blacklist details"""

    def get_parser(self, prog_name):
        parser = super(ShowBlacklistCommand, self).get_parser(prog_name)

        parser.add_argument('id', help="Blacklist ID")

        common.add_all_common_options(parser)

        return parser

    def take_action(self, parsed_args):
        client = self.app.client_manager.dns
        common.set_all_common_headers(client, parsed_args)
        data = client.blacklists.get(parsed_args.id)
        _format_blacklist(data)
        return six.moves.zip(*sorted(six.iteritems(data)))


class CreateBlacklistCommand(show.ShowOne):
    """Create new blacklist"""

    def get_parser(self, prog_name):
        parser = super(CreateBlacklistCommand, self).get_parser(prog_name)

        parser.add_argument('--pattern', help="Blacklist pattern",
                            required=True)
        parser.add_argument('--description', help="Description")

        common.add_all_common_options(parser)

        return parser

    def take_action(self, parsed_args):
        client = self.app.client_manager.dns
        common.set_all_common_headers(client, parsed_args)

        data = client.blacklists.create(
            parsed_args.pattern, parsed_args.description)

        _format_blacklist(data)
        return six.moves.zip(*sorted(six.iteritems(data)))


class SetBlacklistCommand(show.ShowOne):
    """Set blacklist properties"""

    def get_parser(self, prog_name):
        parser = super(SetBlacklistCommand, self).get_parser(prog_name)

        parser.add_argument('id', help="Blacklist ID")
        parser.add_argument('--pattern', help="Blacklist pattern")

        description_group = parser.add_mutually_exclusive_group()
        description_group.add_argument('--description', help="Description")
        description_group.add_argument('--no-description', action='store_true')

        common.add_all_common_options(parser)

        return parser

    def take_action(self, parsed_args):
        data = {}

        if parsed_args.pattern:
            data['pattern'] = parsed_args.pattern

        if parsed_args.no_description:
            data['description'] = None
        elif parsed_args.description:
            data['description'] = parsed_args.description

        client = self.app.client_manager.dns
        common.set_all_common_headers(client, parsed_args)

        updated = client.blacklists.update(parsed_args.id, data)

        _format_blacklist(updated)
        return six.moves.zip(*sorted(six.iteritems(updated)))


class DeleteBlacklistCommand(command.Command):
    """Delete blacklist"""

    def get_parser(self, prog_name):
        parser = super(DeleteBlacklistCommand, self).get_parser(prog_name)

        parser.add_argument('id', help="Blacklist ID")

        common.add_all_common_options(parser)

        return parser

    def take_action(self, parsed_args):
        client = self.app.client_manager.dns
        common.set_all_common_headers(client, parsed_args)
        client.blacklists.delete(parsed_args.id)

        LOG.info('Blacklist %s was deleted', parsed_args.id)