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

__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2023112901'

DESCRIPTION = """This plugin lets you check the most common analytics values from Matomo, for one
                 or several websites and for any given date and period."""

DEFAULT_URL      = 'https://demo.matomo.org'
DEFAULT_IDSITE   = 1
DEFAULT_PERIOD   = 'day'
DEFAULT_DATE     = 'today'
DEFAULT_PASSWORD = 'anonymous'

DEFAULT_METRIC   = []

DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_TIMEOUT  = 3


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

    parser.add_argument(
        '-V', '--version',
        action='version',
        version='%(prog)s: v{} by {}'.format(__version__, __author__)
    )

    parser.add_argument(
        '--always-ok',
        help='Always returns OK.',
        dest='ALWAYS_OK',
        action='store_true',
        default=False,
    )

    parser.add_argument(
        '--date',
        help='REST API date, for example "date=last10" or "date="today". Default: %(default)s',
        dest='DATE',
        default=DEFAULT_DATE,
    )

    parser.add_argument(
        '--idsite',
        help='REST API idSite, for example "idsite=1", "idsite=1,4,5" or "idsite=all". Default: %(default)s',
        dest='IDSITE',
        default=DEFAULT_IDSITE,
    )

    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(
        '--metric',
        help='Filter the output and optionally check against thresholds or ranges, for example "--metric nb_visits,100:,50:" (repeating, csv, works with ranges). Default: %(default)s',
        dest='METRIC',
        type=lib.args.csv,
        action='append',
        default=DEFAULT_METRIC,
    )

    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='REST API Access Token. Default: %(default)s',
        dest='PASSWORD',
        default=DEFAULT_PASSWORD,
    )

    parser.add_argument(
        '--period',
        help='REST API period, for example "period=range" or "period=day". Default: %(default)s',
        dest='PERIOD',
        default=DEFAULT_PERIOD,
    )

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

    parser.add_argument(
        '-u', '--url',
        help='Matomo 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
    url = args.URL + ('/' if not args.URL.endswith('/') else '') + 'index.php?method=API.get&idSite={}&period={}&date={}&module=API&token_auth={}&format=json&filter_limit=1'.format(args.IDSITE, args.PERIOD, args.DATE, args.PASSWORD)
    result = lib.base.coe(lib.url.fetch_json(url, insecure=args.INSECURE, no_proxy=args.NO_PROXY, timeout=args.TIMEOUT))
    if 'result' in result and result['result'] == 'error':
        lib.base.cu(result['message'])

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

    if args.METRIC:
        # just print and check some of all those possible values
        for metric in args.METRIC:
            key = metric[0]
            try:
                value = result[key]
            except:
                continue
            try:
                warn = metric[1]
            except:
                warn = None
            try:
                crit = metric[2]
            except:
                crit = None

            if not lib.base.coe(lib.base.match_range(value, crit)):
                sensor_state = STATE_CRIT
            elif not lib.base.coe(lib.base.match_range(value, warn)):
                sensor_state = STATE_WARN
            else:
                sensor_state = STATE_OK

            msg += '{}: {}{}, '.format(key, lib.human.number2human(value), lib.base.state2str(sensor_state, prefix=' (', suffix=')'))
            state = lib.base.get_worst(state, sensor_state)
            if 'time' in key:
                perfdata += lib.base.get_perfdata(key, value, 's', None, None, 0, None)
            elif 'percent' in key or 'rate' in key:
                perfdata += lib.base.get_perfdata(key, value, '%', None, None, 0, 100)
            else:
                perfdata += lib.base.get_perfdata(key, value, None, None, None, 0, None)
    else:
        for key, value in lib.base.sort(result, reverse=False, sort_by_key=True):
            # print all values
            msg += '{}: {}, '.format(key, lib.human.number2human(value))
            perfdata += lib.base.get_perfdata(key, value, 's' if 'time' in key else None, None, None, 0, None)

    # over and out
    lib.base.oao('{}'.format(msg[:-2]), state, perfdata, always_ok=args.ALWAYS_OK)


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