# Copyright 2016-2017 FUJITSU LIMITED
# All Rights Reserved
#
#    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 argparse
from collections.abc import Iterable, Sequence
import logging
from typing import Any

from cliff import columns as cliff_columns
from osc_lib.cli import identity as identity_utils
from osc_lib import exceptions
from osc_lib import utils
from osc_lib.utils import columns as column_util

from openstackclient import command
from openstackclient.i18n import _
from openstackclient.identity import common as identity_common


LOG = logging.getLogger(__name__)


class AdminStateColumn(cliff_columns.FormattableColumn[bool]):
    def human_readable(self) -> str:
        return 'UP' if self._value else 'DOWN'


_formatters = {
    'admin_state_up': AdminStateColumn,
}

_attr_map = (
    ('id', 'ID', column_util.LIST_BOTH),
    ('name', 'Name', column_util.LIST_BOTH),
    ('ingress_firewall_policy_id', 'Ingress Policy ID', column_util.LIST_BOTH),
    ('egress_firewall_policy_id', 'Egress Policy ID', column_util.LIST_BOTH),
    ('description', 'Description', column_util.LIST_LONG_ONLY),
    ('status', 'Status', column_util.LIST_LONG_ONLY),
    ('ports', 'Ports', column_util.LIST_LONG_ONLY),
    ('admin_state_up', 'State', column_util.LIST_LONG_ONLY),
    ('shared', 'Shared', column_util.LIST_LONG_ONLY),
    ('project_id', 'Project', column_util.LIST_LONG_ONLY),
)

_attr_map_dict = {x[0]: x[1] for x in _attr_map}


def _get_common_parser(
    parser: argparse.ArgumentParser,
) -> argparse.ArgumentParser:
    parser.add_argument(
        '--description',
        metavar='<description>',
        help=_('Description of the firewall group'),
    )
    ingress_group = parser.add_mutually_exclusive_group()
    ingress_group.add_argument(
        '--ingress-firewall-policy',
        metavar='<ingress-firewall-policy>',
        dest='ingress_firewall_policy',
        help=_('Ingress firewall policy (name or ID)'),
    )
    ingress_group.add_argument(
        '--no-ingress-firewall-policy',
        dest='no_ingress_firewall_policy',
        action='store_true',
        help=_('Detach ingress firewall policy from the firewall group'),
    )
    egress_group = parser.add_mutually_exclusive_group()
    egress_group.add_argument(
        '--egress-firewall-policy',
        metavar='<egress-firewall-policy>',
        dest='egress_firewall_policy',
        help=_('Egress firewall policy (name or ID)'),
    )
    egress_group.add_argument(
        '--no-egress-firewall-policy',
        dest='no_egress_firewall_policy',
        action='store_true',
        help=_('Detach egress firewall policy from the firewall group'),
    )
    shared_group = parser.add_mutually_exclusive_group()
    shared_group.add_argument(
        '--share',
        action='store_true',
        default=None,
        dest='shared',
        help=_(
            'Share the firewall group to be used in all projects '
            '(by default, it is restricted to be used by the '
            'current project).'
        ),
    )
    shared_group.add_argument(
        '--no-share',
        action='store_false',
        dest='shared',
        help=_('Restrict use of the firewall group to the current project'),
    )
    admin_group = parser.add_mutually_exclusive_group()
    admin_group.add_argument(
        '--enable',
        action='store_true',
        default=None,
        dest='admin_state_up',
        help=_('Enable firewall group'),
    )
    admin_group.add_argument(
        '--disable',
        action='store_false',
        dest='admin_state_up',
        help=_('Disable firewall group'),
    )
    return parser


def _get_common_attrs(
    client_manager: Any,
    parsed_args: argparse.Namespace,
    is_create: bool = True,
) -> dict[str, Any]:
    attrs: dict[str, Any] = {}
    client = client_manager.network

    if parsed_args.ingress_firewall_policy:
        attrs['ingress_firewall_policy_id'] = client.find_firewall_policy(
            parsed_args.ingress_firewall_policy, ignore_missing=False
        ).id
    elif parsed_args.no_ingress_firewall_policy:
        attrs['ingress_firewall_policy_id'] = None

    if parsed_args.egress_firewall_policy:
        attrs['egress_firewall_policy_id'] = client.find_firewall_policy(
            parsed_args.egress_firewall_policy, ignore_missing=False
        ).id
    elif parsed_args.no_egress_firewall_policy:
        attrs['egress_firewall_policy_id'] = None

    if parsed_args.shared is not None:
        attrs['shared'] = parsed_args.shared
    if parsed_args.admin_state_up is not None:
        attrs['admin_state_up'] = parsed_args.admin_state_up
    if parsed_args.name:
        attrs['name'] = parsed_args.name
    if parsed_args.description:
        attrs['description'] = parsed_args.description
    if parsed_args.port and parsed_args.no_port:
        attrs['ports'] = sorted(
            [
                client.find_port(p, ignore_missing=False).id
                for p in set(parsed_args.port)
            ]
        )
    elif parsed_args.port:
        ports = []
        for p in set(parsed_args.port):
            ports.append(client.find_port(p, ignore_missing=False).id)
        if not is_create:
            ports += client.find_firewall_group(
                parsed_args.firewall_group, ignore_missing=False
            ).ports
        attrs['ports'] = sorted(set(ports))
    elif parsed_args.no_port:
        attrs['ports'] = []
    return attrs


class CreateFirewallGroup(command.ShowOne):
    _description = _("Create a new firewall group")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        _get_common_parser(parser)
        # TODO(slaweq): Remove the deprecated --name option and make the
        # positional name argument required (remove nargs='?') once the
        # deprecation period is over.
        parser.add_argument(
            'positional_name',
            nargs='?',
            metavar='<name>',
            default=None,
            help=_('Name for the firewall group'),
        )
        parser.add_argument(
            '--name',
            help=_(
                '(Deprecated, please pass name as a positional argument) '
                'Name for the firewall group'
            ),
        )
        identity_utils.add_project_owner_option_to_parser(parser)
        port_group = parser.add_mutually_exclusive_group()
        port_group.add_argument(
            '--port',
            metavar='<port>',
            action='append',
            help=_(
                'Port(s) (name or ID) to apply firewall group.  This '
                'option can be repeated'
            ),
        )
        port_group.add_argument(
            '--no-port',
            dest='no_port',
            action='store_true',
            help=_('Detach all port from the firewall group'),
        )
        return parser

    def take_action(
        self, parsed_args: argparse.Namespace
    ) -> tuple[Sequence[str], Iterable[Any]]:
        client = self.app.client_manager.network
        # TODO(slaweq): Remove this --name deprecation handling once the
        # deprecation period is over.
        if parsed_args.positional_name and parsed_args.name:
            msg = _(
                "Cannot specify name as both a positional argument "
                "and with the --name option."
            )
            raise exceptions.CommandError(msg)
        if parsed_args.name:
            LOG.warning(
                'The --name option is deprecated for the "firewall group '
                'create" command, please pass the name as a positional '
                'argument instead.'
            )
        elif parsed_args.positional_name:
            parsed_args.name = parsed_args.positional_name
        attrs = _get_common_attrs(self.app.client_manager, parsed_args)
        if 'project' in parsed_args and parsed_args.project is not None:
            attrs['project_id'] = identity_common.find_project(
                self.app.client_manager.identity,
                parsed_args.project,
                parsed_args.project_domain,
            ).id
        obj = client.create_firewall_group(**attrs)
        display_columns, columns = utils.get_osc_show_columns_for_sdk_resource(
            obj, _attr_map_dict, ['location', 'tenant_id']
        )
        data = utils.get_dict_properties(obj, columns, formatters=_formatters)
        return (display_columns, data)


class DeleteFirewallGroup(command.Command):
    _description = _("Delete firewall group(s)")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument(
            'firewall_group',
            metavar='<firewall-group>',
            nargs='+',
            help=_('Firewall group(s) to delete (name or ID)'),
        )
        return parser

    def take_action(self, parsed_args: argparse.Namespace) -> None:
        client = self.app.client_manager.network
        result = 0
        for fwg in parsed_args.firewall_group:
            try:
                fwg = client.find_firewall_group(fwg, ignore_missing=False)
                client.delete_firewall_group(fwg.id)
            except Exception as e:
                result += 1
                LOG.error(
                    _(
                        "Failed to delete firewall group with "
                        "name or ID '%(firewall_group)s': %(e)s"
                    ),
                    {'firewall_group': fwg, 'e': e},
                )

        if result > 0:
            total = len(parsed_args.firewall_group)
            msg = _(
                "%(result)s of %(total)s firewall group(s) failed to delete."
            ) % {'result': result, 'total': total}
            raise exceptions.CommandError(msg)


class ListFirewallGroup(command.Lister):
    _description = _("List firewall groups")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument(
            '--long',
            action='store_true',
            help=_("List additional fields in output"),
        )
        return parser

    def take_action(
        self, parsed_args: argparse.Namespace
    ) -> tuple[Sequence[str], Iterable[tuple[Any, ...]]]:
        client = self.app.client_manager.network
        obj = client.firewall_groups()
        headers, columns = column_util.get_column_definitions(
            list(_attr_map), long_listing=parsed_args.long
        )
        return (
            headers,
            (
                utils.get_dict_properties(s, columns, formatters=_formatters)
                for s in obj
            ),
        )


class SetFirewallGroup(command.Command):
    _description = _("Set firewall group properties")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        _get_common_parser(parser)
        parser.add_argument(
            'firewall_group',
            metavar='<firewall-group>',
            help=_('Firewall group to update (name or ID)'),
        )
        parser.add_argument('--name', help=_('Name for the firewall group'))
        parser.add_argument(
            '--port',
            metavar='<port>',
            action='append',
            help=_(
                'Port(s) (name or ID) to apply firewall group.  This '
                'option can be repeated'
            ),
        )
        parser.add_argument(
            '--no-port',
            dest='no_port',
            action='store_true',
            help=_('Detach all port from the firewall group'),
        )
        return parser

    def take_action(self, parsed_args: argparse.Namespace) -> None:
        client = self.app.client_manager.network
        fwg_id = client.find_firewall_group(
            parsed_args.firewall_group, ignore_missing=False
        ).id
        attrs = _get_common_attrs(
            self.app.client_manager, parsed_args, is_create=False
        )
        try:
            client.update_firewall_group(fwg_id, **attrs)
        except Exception as e:
            msg = _("Failed to set firewall group '%(group)s': %(e)s") % {
                'group': parsed_args.firewall_group,
                'e': e,
            }
            raise exceptions.CommandError(msg)


class ShowFirewallGroup(command.ShowOne):
    _description = _("Display firewall group details")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument(
            'firewall_group',
            metavar='<firewall-group>',
            help=_('Firewall group to show (name or ID)'),
        )
        return parser

    def take_action(
        self, parsed_args: argparse.Namespace
    ) -> tuple[Sequence[str], Iterable[Any]]:
        client = self.app.client_manager.network
        fwg_id = client.find_firewall_group(
            parsed_args.firewall_group, ignore_missing=False
        ).id
        obj = client.get_firewall_group(fwg_id)
        display_columns, columns = utils.get_osc_show_columns_for_sdk_resource(
            obj, _attr_map_dict, ['location', 'tenant_id']
        )
        data = utils.get_dict_properties(obj, columns, formatters=_formatters)
        return (display_columns, data)


class UnsetFirewallGroup(command.Command):
    _description = _("Unset firewall group properties")

    def get_parser(self, prog_name: str) -> argparse.ArgumentParser:
        parser = super().get_parser(prog_name)
        parser.add_argument(
            'firewall_group',
            metavar='<firewall-group>',
            help=_('Firewall group to unset (name or ID)'),
        )
        port_group = parser.add_mutually_exclusive_group()
        port_group.add_argument(
            '--port',
            metavar='<port>',
            action='append',
            help=_(
                'Port(s) (name or ID) to apply firewall group.  This '
                'option can be repeated'
            ),
        )
        port_group.add_argument(
            '--all-port',
            action='store_true',
            help=_('Remove all ports for this firewall group'),
        )
        parser.add_argument(
            '--ingress-firewall-policy',
            action='store_true',
            help=_('Ingress firewall policy (name or ID) to delete'),
        )
        parser.add_argument(
            '--egress-firewall-policy',
            action='store_true',
            dest='egress_firewall_policy',
            help=_('Egress firewall policy (name or ID) to delete'),
        )
        shared_group = parser.add_mutually_exclusive_group()
        shared_group.add_argument(
            '--share',
            action='store_true',
            help=_(
                '(Deprecated) Use "firewall group set --no-share" instead. '
                'Restrict use of the firewall group to the current project'
            ),
        )
        parser.add_argument(
            '--enable',
            action='store_true',
            help=_(
                '(Deprecated) Use "firewall group set --disable" instead. '
                'Disable firewall group'
            ),
        )
        return parser

    def _get_attrs(
        self, client: Any, parsed_args: argparse.Namespace
    ) -> dict[str, Any]:
        attrs: dict[str, Any] = {}
        if parsed_args.ingress_firewall_policy:
            attrs['ingress_firewall_policy_id'] = None
        if parsed_args.egress_firewall_policy:
            attrs['egress_firewall_policy_id'] = None
        if parsed_args.share:
            LOG.warning(
                'The --share option is deprecated, please use '
                '"firewall group set --no-share" instead.'
            )
            attrs['shared'] = False
        if parsed_args.enable:
            LOG.warning(
                'The --enable option is deprecated, please use '
                '"firewall group set --disable" instead.'
            )
            attrs['admin_state_up'] = False
        if parsed_args.port:
            old = client.find_firewall_group(
                parsed_args.firewall_group, ignore_missing=False
            ).ports
            new = [
                client.find_port(r, ignore_missing=False).id
                for r in parsed_args.port
            ]
            attrs['ports'] = sorted(list(set(old) - set(new)))
        if parsed_args.all_port:
            attrs['ports'] = []
        return attrs

    def take_action(self, parsed_args: argparse.Namespace) -> None:
        client = self.app.client_manager.network
        fwg_id = client.find_firewall_group(
            parsed_args.firewall_group, ignore_missing=False
        ).id
        attrs = self._get_attrs(client, parsed_args)
        try:
            client.update_firewall_group(fwg_id, **attrs)
        except Exception as e:
            msg = _("Failed to unset firewall group '%(group)s': %(e)s") % {
                'group': parsed_args.firewall_group,
                'e': e,
            }
            raise exceptions.CommandError(msg)
