#   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.
#

"""Host action implementations"""

import argparse
from collections.abc import Iterable
from typing import Any

from openstack import exceptions as sdk_exceptions
from osc_lib import utils

from openstackclient import command
from openstackclient.i18n import _


class ListHost(command.Lister):
    _description = _("DEPRECATED: List hosts")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument(
            "--zone",
            metavar="<zone>",
            help=_("Only return hosts in the availability zone"),
        )
        return parser

    def take_action(
        self, parsed_args: argparse.Namespace
    ) -> tuple[tuple[str, ...], Iterable[tuple[Any, ...]]]:
        compute_client = self.app.client_manager.compute

        self.log.warning(
            "API has been deprecated; "
            "consider using 'hypervisor list' instead."
        )

        # doing this since openstacksdk has decided not to support this
        # deprecated command
        response = compute_client.get('/os-hosts', microversion='2.1')
        sdk_exceptions.raise_from_response(response)
        hosts = response.json().get('hosts')
        if parsed_args.zone is not None:
            hosts = [h for h in hosts if h['zone'] == parsed_args.zone]

        columns = ("Host Name", "Service", "Zone")
        return columns, (utils.get_dict_properties(s, columns) for s in hosts)


class SetHost(command.Command):
    _description = _("DEPRECATED: Set host properties")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument(
            "host", metavar="<host>", help=_("Host to modify (name only)")
        )
        status = parser.add_mutually_exclusive_group()
        status.add_argument(
            '--enable', action='store_true', help=_("Enable the host")
        )
        status.add_argument(
            '--disable', action='store_true', help=_("Disable the host")
        )
        maintenance = parser.add_mutually_exclusive_group()
        maintenance.add_argument(
            '--enable-maintenance',
            action='store_true',
            help=_("Enable maintenance mode for the host"),
        )
        maintenance.add_argument(
            '--disable-maintenance',
            action='store_true',
            help=_("Disable maintenance mode for the host"),
        )
        return parser

    def take_action(self, parsed_args: argparse.Namespace) -> None:
        compute_client = self.app.client_manager.compute

        self.log.warning(
            "API has been deprecated; "
            "consider using 'compute service set' instead."
        )

        data = {}
        if parsed_args.enable:
            data['status'] = 'enable'
        if parsed_args.disable:
            data['status'] = 'disable'
        if parsed_args.enable_maintenance:
            data['maintenance_mode'] = 'enable'
        if parsed_args.disable_maintenance:
            data['maintenance_mode'] = 'disable'

        if not data:
            # don't bother calling if nothing given
            return

        # doing this since openstacksdk has decided not to support this
        # deprecated command
        response = compute_client.put(
            f'/os-hosts/{parsed_args.host}', json=data, microversion='2.1'
        )
        sdk_exceptions.raise_from_response(response)


class ShowHost(command.Lister):
    _description = _("DEPRECATED: Display host details")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument("host", metavar="<host>", help=_("Name of host"))
        return parser

    def take_action(
        self, parsed_args: argparse.Namespace
    ) -> tuple[tuple[str, ...], Iterable[tuple[Any, ...]]]:
        compute_client = self.app.client_manager.compute

        self.log.warning(
            "API has been deprecated; "
            "consider using 'hypervisor show' instead."
        )

        # doing this since openstacksdk has decided not to support this
        # deprecated command
        response = compute_client.get(
            f'/os-hosts/{parsed_args.host}', microversion='2.1'
        )
        sdk_exceptions.raise_from_response(response)
        resources = response.json().get('host')

        data = []
        if resources is not None:
            for resource in resources:
                data.append(resource['resource'])

        columns = ("Host", "Project", "CPU", "Memory MB", "Disk GB")

        return columns, (utils.get_dict_properties(s, columns) for s in data)
