#!/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
import json
import sys

import lib.args
import lib.base
import lib.lftest
import lib.nodebb
from lib.globals import STATE_OK, STATE_UNKNOWN

__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2026040801'

DESCRIPTION = """Retrieves recent server-side errors from NodeBB via the admin API. Alerts when errors are found in the error log."""

DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_SERVERITY = 'warn'
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=f'%(prog)s: v{__version__} by {__author__}',
    )

    parser.add_argument(
        '--always-ok',
        help=lib.args.help('--always-ok'),
        dest='ALWAYS_OK',
        action='store_true',
        default=False,
    )

    parser.add_argument(
        '--insecure',
        help=lib.args.help('--insecure'),
        dest='INSECURE',
        action='store_true',
        default=DEFAULT_INSECURE,
    )

    parser.add_argument(
        '--no-proxy',
        help=lib.args.help('--no-proxy'),
        dest='NO_PROXY',
        action='store_true',
        default=DEFAULT_NO_PROXY,
    )

    parser.add_argument(
        '--severity',
        help='Severity for alerts that do not depend on thresholds. '
        'One of "warn" or "crit". '
        'Default: %(default)s',
        dest='SEVERITY',
        default=DEFAULT_SERVERITY,
        choices=['warn', 'crit'],
    )

    parser.add_argument(
        '--test',
        help=lib.args.help('--test'),
        dest='TEST',
        type=lib.args.csv,
    )

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

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

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

    args, _ = parser.parse_known_args()
    return args


def main():
    """The main function. This is where the magic happens."""

    # parse the command line
    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/advanced/errors')
    else:
        # do not call the command, put in test data
        stdout, _, _ = lib.lftest.test(args.TEST)
        result = json.loads(stdout)

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

    # analyze data - analytics
    err404 = result['analytics']['not-found'][-1]
    err503 = result['analytics']['toobusy'][-1]
    if err503:
        state = lib.base.str2state(args.SEVERITY)

    perfdata += lib.base.get_perfdata(
        'err404',
        err404,
        uom='c',
        _min=0,
    )
    perfdata += lib.base.get_perfdata(
        'err503',
        err503,
        uom='c',
        _min=0,
    )

    # build the message
    msg += (
        f'HTTP Status today: {err503}x 503 too busy'
        f'{lib.base.state2str(state, prefix=" ")}'
        f', {err404}x 404 not found\n'
    )

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


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