# Copyright (c) 2017 Ericsson AB.
# Copyright (c) 2017-2021, 2024 Wind River Systems, 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.
#

from osc_lib.command import command

from dcmanagerclient import exceptions
from dcmanagerclient.commands.v1 import base

DEFAULT_REGION_NAME = "RegionOne"


def options_detail_format(sw_update_options=None):

    columns = (
        "cloud",
        "storage apply type",
        "worker apply type",
        "max parallel workers",
        "alarm restriction type",
        "default instance action",
        "created_at",
        "updated_at",
    )

    if sw_update_options:
        data = (
            sw_update_options.cloud,
            sw_update_options.storage_apply_type,
            sw_update_options.worker_apply_type,
            sw_update_options.max_parallel_workers,
            sw_update_options.alarm_restriction_type,
            sw_update_options.default_instance_action,
            sw_update_options.created_at,
            sw_update_options.updated_at,
        )
    else:
        data = (tuple("<none>" for _ in range(len(columns))),)

    return columns, data


def options_list_format(sw_update_option=None):
    columns = (
        "cloud",
        "storage apply type",
        "worker apply type",
        "max parallel workers",
        "alarm restriction type",
        "default instance action",
    )

    if sw_update_option:
        data = (
            sw_update_option.cloud,
            sw_update_option.storage_apply_type,
            sw_update_option.worker_apply_type,
            sw_update_option.max_parallel_workers,
            sw_update_option.alarm_restriction_type,
            sw_update_option.default_instance_action,
        )

    else:
        data = (tuple("<none>" for _ in range(len(columns))),)

    return columns, data


class UpdateSwUpdateOptions(base.DCManagerShowOne):
    """Update patch options, defaults or per subcloud."""

    def _get_format_function(self):
        return options_detail_format

    def get_parser(self, prog_name):
        parser = super().get_parser(prog_name)

        parser.add_argument(
            "--storage-apply-type",
            required=True,
            choices=["parallel", "serial"],
            help="Storage node apply type (parallel or serial).",
        )

        parser.add_argument(
            "--worker-apply-type",
            required=True,
            choices=["parallel", "serial"],
            help="Compute node apply type (parallel or serial).",
        )

        parser.add_argument(
            "--max-parallel-workers",
            required=True,
            type=int,
            help="Maximum number of parallel workers.",
        )

        parser.add_argument(
            "--alarm-restriction-type",
            required=True,
            choices=["strict", "relaxed"],
            help="Whether to allow patching if subcloud alarms are present or "
            "not (strict, relaxed).",
        )

        parser.add_argument(
            "--default-instance-action",
            required=True,
            choices=["stop-start", "migrate"],
            help="How instances should be handled.",
        )

        parser.add_argument(
            "subcloud",
            nargs="?",
            default=None,
            help="Subcloud name or id, omit to set default options.",
        )

        return parser

    def _get_resources(self, parsed_args):
        subcloud_ref = parsed_args.subcloud
        sw_update_options_manager = self.app.client_manager.sw_update_options_manager
        kwargs = {}
        kwargs["storage-apply-type"] = parsed_args.storage_apply_type
        kwargs["worker-apply-type"] = parsed_args.worker_apply_type
        kwargs["max-parallel-workers"] = parsed_args.max_parallel_workers
        kwargs["alarm-restriction-type"] = parsed_args.alarm_restriction_type
        kwargs["default-instance-action"] = parsed_args.default_instance_action

        try:
            return sw_update_options_manager.sw_update_options_update(
                subcloud_ref, **kwargs
            )
        except Exception as exc:
            print(exc)
            error_msg = f"Unable to update patch options for subcloud {subcloud_ref}"
            raise exceptions.DCManagerClientException(error_msg)


class ListSwUpdateOptions(base.DCManagerLister):
    """List patch options."""

    def _get_format_function(self):
        return options_list_format

    def get_parser(self, prog_name):
        parser = super().get_parser(prog_name)
        return parser

    def _get_resources(self, parsed_args):
        sw_update_options_manager = self.app.client_manager.sw_update_options_manager
        return sw_update_options_manager.sw_update_options_list()


class ShowSwUpdateOptions(base.DCManagerShowOne):
    """Show patch options, defaults or per subcloud."""

    def _get_format_function(self):
        return options_detail_format

    def get_parser(self, prog_name):
        parser = super().get_parser(prog_name)

        parser.add_argument(
            "subcloud",
            nargs="?",
            default=None,
            help="Subcloud name or id, omit to show default options.",
        )

        return parser

    def _get_resources(self, parsed_args):
        subcloud_ref = parsed_args.subcloud
        sw_update_options_manager = self.app.client_manager.sw_update_options_manager
        return sw_update_options_manager.sw_update_options_detail(subcloud_ref)


class DeleteSwUpdateOptions(command.Command):
    """Delete per subcloud patch options."""

    def get_parser(self, prog_name):
        parser = super().get_parser(prog_name)

        parser.add_argument("subcloud", help="Subcloud name or id")

        return parser

    def take_action(self, parsed_args):
        subcloud_ref = parsed_args.subcloud
        sw_update_options_manager = self.app.client_manager.sw_update_options_manager
        try:
            return sw_update_options_manager.sw_update_options_delete(subcloud_ref)
        except Exception as exc:
            print(exc)
            error_msg = "Unable to delete patch options"
            raise exceptions.DCManagerClientException(error_msg)