#!/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 sys

import lib.args
import lib.base
import lib.wildfly
from lib.globals import STATE_CRIT, STATE_OK, STATE_UNKNOWN, STATE_WARN

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

DESCRIPTION = """Checks the overall server status of a WildFly/JBoss AS instance via its HTTP
management API. Alerts when the server is not in "running" state."""

DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_TIMEOUT = 3
DEFAULT_URL = 'http://localhost:9990'
DEFAULT_USERNAME = 'wildfly-monitoring'


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(
        '--instance',
        help='WildFly instance (server-config) to check when running in domain mode.',
        dest='INSTANCE',
    )

    parser.add_argument(
        '--mode',
        help='WildFly server mode. Default: %(default)s',
        dest='MODE',
        choices=['standalone', 'domain'],
        default='standalone',
    )

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

    parser.add_argument(
        '--node',
        help='WildFly node (host) when running in domain mode.',
        dest='NODE',
    )

    parser.add_argument(
        '-p',
        '--password',
        help='WildFly management API password.',
        dest='PASSWORD',
        required=True,
    )

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

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

    parser.add_argument(
        '--username',
        help='WildFly management API username. Default: %(default)s',
        dest='USERNAME',
        default=DEFAULT_USERNAME,
        required=True,
    )

    args, _ = parser.parse_known_args()
    return args


def check_server_status(args):
    data = {
        'operation': 'read-attribute',
        'name': 'server-state',
        'json': 1,
    }
    res = lib.wildfly.get_data(args, data)

    # build the message
    if res == 'running':
        state = STATE_OK
        retc = 0
    elif res in ['reload-required', 'restart-required']:
        state = STATE_WARN
        retc = 1
    else:
        state = STATE_CRIT
        retc = 2
    msg = f'Server status "{res}"{lib.base.state2str(state, prefix=" ")}, '
    perfdata = lib.base.get_perfdata(
        'server-state',
        retc,
        warn=1,
        crit=2,
        _min=0,
        _max=3,
    )

    data = {
        'operation': 'read-attribute',
        'name': 'launch-type',
        'json': 1,
    }
    res = lib.wildfly.get_data(args, data)
    msg += f'Launch Type {res}, '

    data = {
        'operation': 'read-attribute',
        'name': 'running-mode',
        'json': 1,
    }
    res = lib.wildfly.get_data(args, data)
    msg += f'Running Mode {res}, '

    data = {
        'operation': 'read-attribute',
        'name': 'product-version',
        'json': 1,
    }
    res = lib.wildfly.get_data(args, data)
    if res is None:
        data = {
            'operation': 'read-attribute',
            'name': 'release-version',
            'json': 1,
        }
        res = lib.wildfly.get_data(args, data)
    msg += f'v{res}'

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


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
    # https://docs.wildfly.org/23/Admin_Guide.html
    return check_server_status(args)


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