#   Copyright 2012-2013 OpenStack Foundation
#
#   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.
#

"""Identity v3 Endpoint action implementations"""

import logging
import six
import sys

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

from openstackclient.common import utils
from openstackclient.identity import common


class CreateEndpoint(show.ShowOne):
    """Create endpoint command"""

    log = logging.getLogger(__name__ + '.CreateEndpoint')

    def get_parser(self, prog_name):
        parser = super(CreateEndpoint, self).get_parser(prog_name)
        parser.add_argument(
            'service',
            metavar='<service>',
            help='Name or ID of new endpoint service')
        parser.add_argument(
            'interface',
            metavar='<interface>',
            choices=['admin', 'public', 'internal'],
            help='New endpoint interface, must be admin, public or internal')
        parser.add_argument(
            'url',
            metavar='<url>',
            help='New endpoint URL')
        parser.add_argument(
            '--region',
            metavar='<region>',
            help='New endpoint region')
        enable_group = parser.add_mutually_exclusive_group()
        enable_group.add_argument(
            '--enable',
            dest='enabled',
            action='store_true',
            default=True,
            help='Enable user',
        )
        enable_group.add_argument(
            '--disable',
            dest='enabled',
            action='store_false',
            help='Disable user',
        )
        return parser

    def take_action(self, parsed_args):
        self.log.debug('take_action(%s)', parsed_args)
        identity_client = self.app.client_manager.identity
        service = common.find_service(identity_client, parsed_args.service)

        endpoint = identity_client.endpoints.create(
            service=service.id,
            url=parsed_args.url,
            interface=parsed_args.interface,
            region=parsed_args.region,
            enabled=parsed_args.enabled
        )

        info = {}
        info.update(endpoint._info)
        info['service_name'] = service.name
        info['service_type'] = service.type
        return zip(*sorted(six.iteritems(info)))


class DeleteEndpoint(command.Command):
    """Delete endpoint command"""

    log = logging.getLogger(__name__ + '.DeleteEndpoint')

    def get_parser(self, prog_name):
        parser = super(DeleteEndpoint, self).get_parser(prog_name)
        parser.add_argument(
            'endpoint',
            metavar='<endpoint>',
            help='ID of endpoint to delete')
        return parser

    def take_action(self, parsed_args):
        self.log.debug('take_action(%s)', parsed_args)
        identity_client = self.app.client_manager.identity
        endpoint_id = utils.find_resource(identity_client.endpoints,
                                          parsed_args.endpoint).id
        identity_client.endpoints.delete(endpoint_id)
        return


class ListEndpoint(lister.Lister):
    """List endpoint command"""

    log = logging.getLogger(__name__ + '.ListEndpoint')

    def take_action(self, parsed_args):
        self.log.debug('take_action(%s)', parsed_args)
        identity_client = self.app.client_manager.identity
        columns = ('ID', 'Region', 'Service Name', 'Service Type',
                   'Enabled', 'Interface', 'URL')
        data = identity_client.endpoints.list()

        for ep in data:
            service = common.find_service(identity_client, ep.service_id)
            ep.service_name = service.name
            ep.service_type = service.type
        return (columns,
                (utils.get_item_properties(
                    s, columns,
                    formatters={},
                ) for s in data))


class SetEndpoint(command.Command):
    """Set endpoint command"""

    log = logging.getLogger(__name__ + '.SetEndpoint')

    def get_parser(self, prog_name):
        parser = super(SetEndpoint, self).get_parser(prog_name)
        parser.add_argument(
            'endpoint',
            metavar='<endpoint>',
            help='ID of endpoint to update')
        parser.add_argument(
            '--interface',
            metavar='<interface>',
            choices=['admin', 'public', 'internal'],
            help='New endpoint interface, must be admin|public|internal')
        parser.add_argument(
            '--url',
            metavar='<url>',
            help='New endpoint URL')
        parser.add_argument(
            '--service',
            metavar='<service>',
            help='Name or ID of new endpoint service')
        parser.add_argument(
            '--region',
            metavar='<region>',
            help='New endpoint region')
        enable_group = parser.add_mutually_exclusive_group()
        enable_group.add_argument(
            '--enable',
            dest='enabled',
            action='store_true',
            default=True,
            help='Enable user',
        )
        enable_group.add_argument(
            '--disable',
            dest='enabled',
            action='store_false',
            help='Disable user',
        )
        return parser

    def take_action(self, parsed_args):
        self.log.debug('take_action(%s)', parsed_args)
        identity_client = self.app.client_manager.identity
        endpoint = utils.find_resource(identity_client.endpoints,
                                       parsed_args.endpoint)
        service = common.find_service(identity_client, parsed_args.service)

        if (not parsed_args.interface and not parsed_args.url
                and not parsed_args.service and not parsed_args.region):
            sys.stdout.write("Endpoint not updated, no arguments present")
            return

        identity_client.endpoints.update(
            endpoint.id,
            service=service.id,
            url=parsed_args.url,
            interface=parsed_args.interface,
            region=parsed_args.region,
            enabled=parsed_args.enabled
        )

        return


class ShowEndpoint(show.ShowOne):
    """Show endpoint command"""

    log = logging.getLogger(__name__ + '.ShowEndpoint')

    def get_parser(self, prog_name):
        parser = super(ShowEndpoint, self).get_parser(prog_name)
        parser.add_argument(
            'endpoint',
            metavar='<endpoint>',
            help='ID of endpoint to display')
        return parser

    def take_action(self, parsed_args):
        self.log.debug('take_action(%s)', parsed_args)
        identity_client = self.app.client_manager.identity
        endpoint = utils.find_resource(identity_client.endpoints,
                                       parsed_args.endpoint)

        service = common.find_service(identity_client, endpoint.service_id)

        info = {}
        info.update(endpoint._info)
        info['service_name'] = service.name
        info['service_type'] = service.type
        return zip(*sorted(six.iteritems(info)))