#!/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.human
import lib.wildfly
from lib.globals import STATE_OK, STATE_UNKNOWN

__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2026042301'

DESCRIPTION = """Reports garbage collector statistics from a WildFly/JBoss AS server via its HTTP
management API, including GC count and total GC time for each collector."""

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(
        '--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 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
    data = {
        'operation': 'read-resource',
        'include-runtime': 'true',
        'recursive': 'true',
        # /core-service/platform-mbean/type/garbage-collector
        'address': [{'core-service': 'platform-mbean'}, {'type': 'garbage-collector'}],
        'json': 1,
    }
    res = lib.wildfly.get_data(args, data)


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

    for name, value in res['name'].items():
        gc_time = value['collection-time']
        gc_count = value['collection-count']
        perfdata += lib.base.get_perfdata(
            f'garbage-collector-{name}-collection-time',
            gc_time,
            uom='ms',
            _min=0,
        )
        perfdata += lib.base.get_perfdata(
            f'garbage-collector-{name}-collection-count',
            gc_count,
            uom='c',
            _min=0,
        )

        # build the message
        msg += (
            f'{name}: '
            f'CollectionCount {lib.human.number2human(gc_count)}, '
            f'CollectionTime '
            f'{lib.human.seconds2human(float(gc_time) / 1000)}; '
        )

    # over and out
    lib.base.oao(msg[:-2], state, perfdata)


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