#   Copyright 2012 OpenStack Foundation
#   Copyright 2013 Nebula Inc.
#
#   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 v2 EC2 Credentials 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.i18n import _  # noqa


class CreateEC2Creds(show.ShowOne):
    """Create EC2 credentials"""

    log = logging.getLogger(__name__ + ".CreateEC2Creds")

    def get_parser(self, prog_name):
        parser = super(CreateEC2Creds, self).get_parser(prog_name)
        parser.add_argument(
            '--project',
            metavar='<project>',
            help=_(
                'Create credentials in project '
                '(name or ID; default: current authenticated project)'
            ),
        )
        parser.add_argument(
            '--user',
            metavar='<user>',
            help=_(
                'Create credentials for user '
                '(name or ID; default: current authenticated user)'
            ),
        )
        return parser

    @utils.log_method(log)
    def take_action(self, parsed_args):
        identity_client = self.app.client_manager.identity

        if parsed_args.project:
            project = utils.find_resource(
                identity_client.tenants,
                parsed_args.project,
            ).id
        else:
            # Get the project from the current auth
            project = self.app.client_manager.auth_ref.project_id
        if parsed_args.user:
            user = utils.find_resource(
                identity_client.users,
                parsed_args.user,
            ).id
        else:
            # Get the user from the current auth
            user = self.app.client_manager.auth_ref.user_id

        creds = identity_client.ec2.create(user, project)

        info = {}
        info.update(creds._info)

        if 'tenant_id' in info:
            info.update(
                {'project_id': info.pop('tenant_id')}
            )

        return zip(*sorted(six.iteritems(info)))


class DeleteEC2Creds(command.Command):
    """Delete EC2 credentials"""

    log = logging.getLogger(__name__ + '.DeleteEC2Creds')

    def get_parser(self, prog_name):
        parser = super(DeleteEC2Creds, self).get_parser(prog_name)
        parser.add_argument(
            'access_key',
            metavar='<access-key>',
            help=_('Credentials access key'),
        )
        parser.add_argument(
            '--user',
            metavar='<user>',
            help=_('Delete credentials for user (name or ID)'),
        )
        return parser

    @utils.log_method(log)
    def take_action(self, parsed_args):
        identity_client = self.app.client_manager.identity

        if parsed_args.user:
            user = utils.find_resource(
                identity_client.users,
                parsed_args.user,
            ).id
        else:
            # Get the user from the current auth
            user = self.app.client_manager.auth_ref.user_id

        identity_client.ec2.delete(user, parsed_args.access_key)


class ListEC2Creds(lister.Lister):
    """List EC2 credentials"""

    log = logging.getLogger(__name__ + '.ListEC2Creds')

    def get_parser(self, prog_name):
        parser = super(ListEC2Creds, self).get_parser(prog_name)
        parser.add_argument(
            '--user',
            metavar='<user>',
            help=_('Filter list by user (name or ID)'),
        )
        return parser

    @utils.log_method(log)
    def take_action(self, parsed_args):
        identity_client = self.app.client_manager.identity

        if parsed_args.user:
            user = utils.find_resource(
                identity_client.users,
                parsed_args.user,
            ).id
        else:
            # Get the user from the current auth
            user = self.app.client_manager.auth_ref.user_id

        columns = ('access', 'secret', 'tenant_id', 'user_id')
        column_headers = ('Access', 'Secret', 'Project ID', 'User ID')
        data = identity_client.ec2.list(user)

        return (column_headers,
                (utils.get_item_properties(
                    s, columns,
                    formatters={},
                ) for s in data))


class ShowEC2Creds(show.ShowOne):
    """Display EC2 credentials details"""

    log = logging.getLogger(__name__ + '.ShowEC2Creds')

    def get_parser(self, prog_name):
        parser = super(ShowEC2Creds, self).get_parser(prog_name)
        parser.add_argument(
            'access_key',
            metavar='<access-key>',
            help=_('Credentials access key'),
        )
        parser.add_argument(
            '--user',
            metavar='<user>',
            help=_('Show credentials for user (name or ID)'),
        )
        return parser

    @utils.log_method(log)
    def take_action(self, parsed_args):
        identity_client = self.app.client_manager.identity

        if parsed_args.user:
            user = utils.find_resource(
                identity_client.users,
                parsed_args.user,
            ).id
        else:
            # Get the user from the current auth
            user = self.app.client_manager.auth_ref.user_id

        creds = identity_client.ec2.get(user, parsed_args.access_key)

        info = {}
        info.update(creds._info)

        if 'tenant_id' in info:
            info.update(
                {'project_id': info.pop('tenant_id')}
            )

        return zip(*sorted(six.iteritems(info)))