#!/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 sys  # pylint: disable=C0413

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

try:
    from bs4 import BeautifulSoup
except ImportError as e:
    print('Python module "BeautifulSoup4" is not installed.')
    sys.exit(STATE_UNKNOWN)


__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2025030801'

DESCRIPTION = """Retrieves the HIN status page from https://support.hin.ch/de/ and searches for
                 out-of-service messages. Unfortunately there is no machine-readable version yet,
                 so the plugin has to rely on the WordPress-generated HTML content."""

DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_TIMEOUT  = 8
DEFAULT_URL = 'https://support.hin.ch/de/'


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

    parser.add_argument(
        '-V', '--version',
        action='version',
        version=f'%(prog)s: v{__version__} by {__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(
        '--url',
        help='HIN Status Page 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:
        html = lib.base.coe(lib.url.fetch(
            args.URL,
            insecure=args.INSECURE,
            no_proxy=args.NO_PROXY,
            timeout=args.TIMEOUT,
        ))
    else:
        # do not call the command, put in test data
        html, _, _ = lib.lftest.test(args.TEST)

    try:
        soup = BeautifulSoup(html, 'html.parser')
    except Exception as e:  # pylint: disable=W0718
        print(f'{e}')
        sys.exit(STATE_UNKNOWN)

    # init some vars
    msg = ''
    state = STATE_OK
    perfdata = ''
    cnt_incidents = 0

    if soup.find('div', class_='hin-status-block-status is-ok'):
        msg += 'Everything is ok.'
    else:
        incidents = []
        try:
            for incident in soup.find('div', class_='hin-status-block-content').find_all('li'):
                incidents.append(incident.get_text(strip=True))
            cnt_incidents = 1
            state = STATE_WARN
            msg += f'Incidents: {", ".join(incidents)}. See {args.URL} for details.'
        except AttributeError:
            lib.base.oao(f'Cannot parse html at {args.URL}', STATE_UNKNOWN)
    perfdata += lib.base.get_perfdata(
        'cnt_incidents',
        cnt_incidents,
        uom=None,
        warn=None,
        crit=None,
        _min=0,
        _max=None,
    )

    # 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()
