#!/usr/bin/env python3
# -*- coding: utf-8; py-indent-offset: 4 -*-
#
# Author:  Linuxfabrik GmbH, Zurich, Switzerland
# Contact: info (at) linuxfabrik (dot) ch
#          https://www.linuxfabrik.ch/
# License: The Unlicense, see LICENSE file.

# https://github.com/Linuxfabrik/monitoring-plugins/blob/main/CONTRIBUTING.md

"""See the check's README for more details.
"""

import argparse  # pylint: disable=C0413
import json  # pylint: disable=C0413
import sys  # pylint: disable=C0413

import lib.args  # pylint: disable=C0413
import lib.base  # pylint: disable=C0413
import lib.human  # pylint: disable=C0413
import lib.nodebb  # pylint: disable=C0413
import lib.lftest  # pylint: disable=C0413
import lib.time  # pylint: disable=C0413
import lib.version  # pylint: disable=C0413
from lib.globals import (STATE_OK, STATE_UNKNOWN,  # pylint: disable=C0413
                          STATE_WARN)

__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2025021501'

DESCRIPTION = """This plugin lets you track if a NodeBB update is available."""

DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_TIMEOUT = 3
DEFAULT_URL = 'http://localhost:4567/forum'


def parse_args():
    """Parse command line arguments using argparse.
    """
    parser = argparse.ArgumentParser(description=DESCRIPTION)

    parser.add_argument(
        '-V', '--version',
        action='version',
        version='%(prog)s: v{} by {}'.format(__version__, __author__)
    )

    parser.add_argument(
        '--always-ok',
        help='Always returns OK.',
        dest='ALWAYS_OK',
        action='store_true',
        default=False,
    )

    parser.add_argument(
        '--insecure',
        help='This option explicitly allows to perform "insecure" SSL connections. '
             'Default: %(default)s',
        dest='INSECURE',
        action='store_true',
        default=DEFAULT_INSECURE,
    )

    parser.add_argument(
        '--no-proxy',
        help='Do not use a proxy. '
             'Default: %(default)s',
        dest='NO_PROXY',
        action='store_true',
        default=DEFAULT_NO_PROXY,
    )

    parser.add_argument(
        '--test',
        help='For unit tests. Needs "path-to-stdout-file,path-to-stderr-file,expected-retc".',
        dest='TEST',
        type=lib.args.csv,
    )

    parser.add_argument(
        '--timeout',
        help='Network timeout in seconds. '
             'Default: %(default)s (seconds)',
        dest='TIMEOUT',
        type=int,
        default=DEFAULT_TIMEOUT,
    )

    parser.add_argument(
        '-p', '--token',
        help='NodeBB API Bearer token.',
        dest='TOKEN',
    )

    parser.add_argument(
        '--url',
        help='NodeBB API URL. '
             'Default: %(default)s',
        dest='URL',
        default=DEFAULT_URL,
    )

    return parser.parse_args()


def main():
    """The main function. Hier spielt die Musik.
    """

    # parse the command line, exit with UNKNOWN if it fails
    try:
        args = parse_args()
    except SystemExit:
        sys.exit(STATE_UNKNOWN)

    # fetch data
    if args.TEST is None:
        result = lib.nodebb.get_data(args, '/api/admin/dashboard')
    else:
        # do not call the command, put in test data
        stdout, stderr, retc = lib.lftest.test(args.TEST)
        result = json.loads(stdout)

    # init some vars
    perfdata = ''

    # analyze data
    installed_version = result['version']
    latest_version = result['latestVersion']
    perfdata = lib.base.get_perfdata('nodebb-version', lib.version.version2float(installed_version), None, None, None, 0, None)

    # build the message
    if not result['upgradeAvailable']:
        state = STATE_OK
        msg = 'NodeBB v{} is up to date'.format(installed_version)
    else:
        state = STATE_WARN
        msg = 'NodeBB v{} installed, NodeBB v{} available'.format(
            installed_version,
            latest_version,
        )

    if result['lastrestart']['timestamp']:
        last_restart = result['lastrestart']['timestamp'] / 1000
        msg += ', Last restart: {} by {} <{}> ({} ago)'.format(
            lib.time.epoch2iso(last_restart),
            result['lastrestart']['user']['username'],
            result['lastrestart']['user']['email'],
            lib.human.seconds2human(lib.time.now(as_type='epoch') - last_restart),
        )

    # over and out
    lib.base.oao(msg, state, perfdata, always_ok=args.ALWAYS_OK)


if __name__ == '__main__':
    try:
        main()
    except Exception:   # pylint: disable=W0703
        lib.base.cu()
