#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (C) 2019 tribe29 GmbH - License: GNU General Public License v2
# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
# conditions defined in the file COPYING, which is part of this source code package.

# NOTE: Careful when replacing the *-import below with a more specific import. This can cause
# problems because it might remove variables from the check-context which are necessary for
# resolving legacy discovery results such as [("SUMMARY", "diskstat_default_levels")]. Furthermore,
# it might also remove variables needed for accessing discovery rulesets.
from cmk.base.check_legacy_includes.huawei_switch import *  # pylint: disable=wildcard-import,unused-wildcard-import

huawei_switch_stack_unknown_role = "unknown"


def parse_huawei_switch_stack(info):
    stack_role_names = {
        "1": "master",
        "2": "standby",
        "3": "slave",
    }

    stack_enabled_info, stack_role_info = info
    if not stack_enabled_info or stack_enabled_info[0][0] != "1":
        return {}

    parsed = {}
    for line in stack_role_info:
        member_number = line[0]
        stack_role = stack_role_names.get(line[1], huawei_switch_stack_unknown_role)
        parsed[member_number] = stack_role

    return parsed


def inventory_huawei_switch_stack(parsed):
    for item, role in parsed.items():
        yield (item, {"expected_role": role})


@get_parsed_item_data
def check_huawei_switch_stack(item, params, item_data):
    if item_data == huawei_switch_stack_unknown_role:
        return 2, item_data

    if item_data == params["expected_role"]:
        return 0, item_data

    return 2, "Unexpected role: %s (Expected: %s)" % (item_data, params["expected_role"])


check_info["huawei_switch_stack"] = {
    "parse_function": parse_huawei_switch_stack,
    "inventory_function": inventory_huawei_switch_stack,
    "check_function": check_huawei_switch_stack,
    "service_description": "Stack role %s",
    "snmp_info": [
        (".1.3.6.1.4.1.2011.5.25.183.1", ["5"]),  # hwStackIsStackDevice
        (
            ".1.3.6.1.4.1.2011.5.25.183.1.20.1",
            [OID_END, "3"],  # hwMemberStackRole
        ),
    ],
    "snmp_scan_function": huawei_switch_scan_function,
}
