#!/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.base  # pylint: disable=C0413
import lib.qts  # pylint: disable=C0413
import lib.txt  # pylint: disable=C0413
import lib.url  # pylint: disable=C0413
from lib.globals import (STATE_CRIT, STATE_OK,  # pylint: disable=C0413
                          STATE_UNKNOWN, STATE_WARN)

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


__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2025020401'

DESCRIPTION = 'Checks the disk SMART values returned by QTS.'

DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_TIMEOUT = 6
DEFAULT_USERNAME = 'admin'


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

    parser.add_argument(
        '-V', '--version',
        action='version',
        version='{0}: v{1} by {2}'.format('%(prog)s', __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(
        '--password',
        help='QTS Password.',
        dest='PASSWORD',
        required=True,
    )

    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='QTS-based Appliance URL, for example https://192.168.1.1:8080.',
        dest='URL',
        required=True,
    )

    parser.add_argument(
        '--username',
        help='QTS User. '
             'Default: %(default)s',
        dest='USERNAME',
        default=DEFAULT_USERNAME,
    )

    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)

    auth_sid = lib.base.coe(lib.qts.get_auth_sid(args))

    # get all HDD/SSD data
    url = '{}/cgi-bin/disk/qsmart.cgi?func=all_hd_data&sid={}'.format(
        args.URL,
        auth_sid,
    )
    result = lib.base.coe(
        lib.url.fetch(url, insecure=args.INSECURE, no_proxy=args.NO_PROXY, timeout=args.TIMEOUT)
    )
    data = xmltodict.parse(result)['QDocRoot']
    if data['authPassed'] == '0':
        lib.base.cu('Insufficient permissions.')

    # get system information
    url = '{}/cgi-bin/management/manaRequest.cgi?subfunc=sysinfo&hd=no&multicpu=1&sid={}'.format(
        args.URL,
        auth_sid,
    )
    result = lib.base.coe(
        lib.url.fetch(url, insecure=args.INSECURE, no_proxy=args.NO_PROXY, timeout=args.TIMEOUT)
    )
    sysinfo = xmltodict.parse(result)['QDocRoot']
    if sysinfo['authPassed'] == '0':
        lib.base.cu('Insufficient permissions.')

    # init some vars
    disk_count = 0
    state = STATE_OK
    msg_body = ''
    perfdata = ''

    # analyze data
    for disk in data['Disk_Info']['entry']:
        if disk['Serial']: # skip empty entries
            disk_count += 1
            disk_state = STATE_OK

            disk_temperature = disk['Temperature'].get('oC', 0)
            if disk_temperature is None:
                disk_temperature = 0
            if disk['hd_is_ssd'] == '1':
                warn = int(sysinfo['func']['ownContent']['root']['SSDTempWarnT'])
                crit = int(sysinfo['func']['ownContent']['root']['SSDTempErrT'])
            else:
                warn = int(sysinfo['func']['ownContent']['root']['HDTempWarnT'])
                crit = int(sysinfo['func']['ownContent']['root']['HDTempErrT'])

            perfdata += lib.base.get_perfdata(
                '{}_{}_{}_{}'.format(
                    disk.get('Disk_Alias', 'Unknown Alias').replace(' ', '_'),
                    disk['Model'].replace(' ', '_'),
                    disk['Serial'].replace(' ', '_'),
                    'temperature',
                ),
                disk_temperature,
                None,
                warn,
                crit,
                0,
                None,
            )

            disk_state = lib.base.get_state(disk_temperature, warn, crit, _operator='ge')
            if disk['Health'] != 'OK':
                disk_state = STATE_WARN

            state = lib.base.get_worst(disk_state, state)
            msg_body += '* {} ({}, SerNo {}, Temp {}°C (Thresholds: {}/{}°C){}\n'.format(
                disk.get('Disk_Alias', 'Unknown Alias'),
                disk['Model'],
                disk['Serial'],
                disk_temperature,
                warn,
                crit,
                lib.base.state2str(disk_state, prefix='', suffix=' '),
            )

    # build the message
    if disk_count:
        msg_header = 'Checked {} {}.'.format(disk_count, lib.txt.pluralize('disk', disk_count))
        if state == STATE_CRIT:
            msg_header += ' There are critical errors.'
        elif state == STATE_WARN:
            msg_header += ' There are warnings.'
        else:
            msg_header += ' All are healthy.'
        # over and out
        lib.base.oao(
            '{}\n{}'.format(msg_header, msg_body),
            state,
            perfdata,
            always_ok=args.ALWAYS_OK,
        )
    else:
        # over and out
        lib.base.cu('Did not find any disk.')


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