#   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.
#

"""Endpoint action implementations"""

import logging
import six

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='<endpoint-service>',
            help='New endpoint service')
        parser.add_argument(
            '--region',
            metavar='<region>',
            help='New endpoint region')
        parser.add_argument(
            '--publicurl',
            metavar='<public-url>',
            required=True,
            help='New endpoint public URL')
        parser.add_argument(
            '--adminurl',
            metavar='<admin-url>',
            help='New endpoint admin URL')
        parser.add_argument(
            '--internalurl',
            metavar='<internal-url>',
            help='New endpoint internal URL')
        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(
            parsed_args.region,
            service.id,
            parsed_args.publicurl,
            parsed_args.adminurl,
            parsed_args.internalurl,)

        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-id>',
            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
        identity_client.endpoints.delete(parsed_args.endpoint)
        return


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

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

    def get_parser(self, prog_name):
        parser = super(ListEndpoint, self).get_parser(prog_name)
        parser.add_argument(
            '--long',
            action='store_true',
            default=False,
            help='List additional fields in output')
        return parser

    def take_action(self, parsed_args):
        self.log.debug('take_action(%s)' % parsed_args)
        identity_client = self.app.client_manager.identity
        if parsed_args.long:
            columns = ('ID', 'Region', 'Service Name', 'Service Type',
                       'PublicURL', 'AdminURL', 'InternalURL')
        else:
            columns = ('ID', 'Region', 'Service Name', 'Service Type')
        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 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_or_service',
            metavar='<endpoint_or_service>',
            help='Endpoint ID or name, type or ID of service 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
        data = identity_client.endpoints.list()
        match = None
        for ep in data:
            if ep.id == parsed_args.endpoint_or_service:
                match = ep
                service = common.find_service(identity_client, ep.service_id)
        if match is None:
            service = common.find_service(identity_client,
                                          parsed_args.endpoint_or_service)
            for ep in data:
                if ep.service_id == service.id:
                    match = ep
        if match is None:
            return None
        info = {}
        info.update(match._info)
        info['service_name'] = service.name
        info['service_type'] = service.type
        return zip(*sorted(six.iteritems(info)))
