#!/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.dell_om import *  # pylint: disable=wildcard-import,unused-wildcard-import

# 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.fan import *  # pylint: disable=wildcard-import,unused-wildcard-import


def inventory_dell_om_fans(info):
    for line in info:
        yield (line[0], {})


def _construct_levels(warn_upper, crit_upper, warn_lower, crit_lower):
    # We've seen several possibilities:
    # - 1, 2, 3, 4
    # - "", "", 3, 4
    # - "", "", "", 4
    if warn_lower not in ["", None] and crit_lower not in ["", None]:
        lower = (int(warn_lower), int(crit_lower))
    elif crit_lower not in ["", None]:
        lower = (int(crit_lower), int(crit_lower))
    else:
        lower = (None, None)

    if warn_upper not in ["", None] and crit_upper not in ["", None]:
        upper = (int(warn_upper), int(crit_upper))
    elif crit_upper not in ["", None]:
        upper = (int(crit_upper), int(crit_upper))
    else:
        upper = (None, None)

    return lower, upper


def check_dell_om_fans(item, params, info):
    translate_status = {
        "1": (3, "OTHER"),
        "2": (3, "UNKNOWN"),
        "3": (0, "OK"),
        "4": (1, "NON CRITICAL UPPER"),
        "5": (2, "CRITICAL UPPER"),
        "6": (2, "NON RECOVERABLE UPPER"),
        "7": (1, "NON CRITICAL LOWER"),
        "8": (2, "CRITICAL LOWER"),
        "9": (2, "NON RECOVERABLE LOWER"),
        "10": (2, "FAILED"),
    }

    for index, status, value, name, warn_upper, crit_upper, warn_lower, crit_lower in info:
        if index == item:
            state, state_readable = translate_status[status]
            yield state, "Status: %s, Name: %s" % (state_readable, name)
            if params:
                constructed_params = params
            else:
                lower, upper = _construct_levels(warn_upper, crit_upper, warn_lower, crit_lower)
                constructed_params = {
                    "lower": lower,
                    "upper": upper,
                }
            yield check_fan(int(value), constructed_params)


check_info["dell_om_fans"] = {
    "check_function": check_dell_om_fans,
    "inventory_function": inventory_dell_om_fans,
    "service_description": "Fan %s",
    "snmp_scan_function": scan_dell_om,
    "snmp_info": (
        ".1.3.6.1.4.1.674.10892.1.700.12.1",
        [
            "2",  # MIB-Dell-10892::coolingDeviceIndex
            "5",  # MIB-Dell-10892::coolingDeviceStatus
            "6",  # MIB-Dell-10892::coolingDeviceReading
            "8",  # MIB-Dell-10892::coolingDeviceLocationName
            "10",  # MIB-Dell-10892::coolingDeviceUpperNonCriticalThreshold
            "11",  # MIB-Dell-10892::coolingDeviceUpperCriticalThreshold
            "12",  # MIB-Dell-10892::coolingDeviceLowerNonCriticalThreshold
            "13",  # MIB-Dell-10892::coolingDeviceLowerCriticalThreshold
        ],
    ),
    "has_perfdata": True,
    "group": "hw_fans",
}
