#!/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.

systemtime_default_values = (30, 60)
factory_settings["systemtime_default_levels"] = {"levels": (30, 60)}


def check_systemtime(item, params, parsed):
    if not parsed:
        return

    systemtime = parsed["foreign_systemtime"]
    if "our_systemtime" in parsed:
        offset = systemtime - parsed["our_systemtime"]
    else:
        try:
            systemtime += get_agent_data_time()
        except (NameError, TypeError):
            pass
        offset = systemtime - time.time()

    warn, crit = params if isinstance(params, tuple) else params["levels"]
    yield check_levels(
        offset,
        "offset",
        (warn, crit, -warn, -crit),
        human_readable_func=get_age_human_readable,
        infoname="Offset",
    )


check_info["systemtime"] = {
    "check_function": check_systemtime,
    "inventory_function": discover_single,
    "service_description": "System Time",
    "has_perfdata": True,
    "group": "systemtime",
    "default_levels_variable": "systemtime_default_levels",
}
