#!/usr/bin/env python3
"""
  fritzbox_uptime - A munin plugin for Linux to monitor AVM Fritzbox
  Copyright (C) 2015 Christian Stade-Schuldt
  Author: Christian Stade-Schuldt
  Like Munin, this plugin is licensed under the GNU GPL v2 license
  http://www.opensource.org/licenses/GPL-2.0
  Add the following section to your munin-node's plugin configuration:

  [fritzbox_*]
  env.fritzbox_ip [ip address of the fritzbox]
  env.fritzbox_username [fritzbox username]
  env.fritzbox_password [fritzbox password]

  This plugin supports the following munin configuration parameters:
  #%# family=auto contrib
  #%# capabilities=autoconf
"""
import json
import os
import re
import sys

import fritzbox_helper as fh

locale = os.environ.get("locale", "de")
patternLoc = {"de": r"(\d+)\s(Tag|Stunden|Minuten)", "en": r"(\d+)\s(days|hours|minutes)"}
dayLoc = {"de": "Tag", "en": "days"}
hourLoc = {"de": "Stunden", "en": "hours"}
minutesLoc = {"de": "Minuten", "en": "minutes"}

PAGE = "energy"
pattern = re.compile(patternLoc[locale])


def get_uptime():
    """get the current uptime"""

    server = os.environ["fritzbox_ip"]
    username = os.environ["fritzbox_username"]
    password = os.environ["fritzbox_password"]

    session_id = fh.get_session_id(server, username, password)
    xhr_data = fh.get_xhr_content(server, session_id, PAGE)
    data = json.loads(xhr_data)
    for d in data["data"]["drain"]:
        if "aktiv" in d["statuses"]:
            matches = re.finditer(pattern, d["statuses"])
            if matches:
                hours = 0.0
                for m in matches:
                    if m.group(2) == dayLoc[locale]:
                        hours += 24 * int(m.group(1))
                    if m.group(2) == hourLoc[locale]:
                        hours += int(m.group(1))
                    if m.group(2) == minutesLoc[locale]:
                        hours += int(m.group(1)) / 60.0
                uptime = hours / 24
                print("uptime.value %.2f" % uptime)


def print_config():
    print("graph_title AVM Fritz!Box Uptime")
    print("graph_args --base 1000 -l 0")
    print("graph_vlabel uptime in days")
    print("graph_scale no'")
    print("graph_category system")
    print("uptime.label uptime")
    print("uptime.draw AREA")
    if os.environ.get("host_name"):
        print("host_name " + os.environ["host_name"])


if __name__ == "__main__":
    if len(sys.argv) == 2 and sys.argv[1] == "config":
        print_config()
    elif len(sys.argv) == 2 and sys.argv[1] == "autoconf":
        print("yes")
    elif len(sys.argv) == 1 or len(sys.argv) == 2 and sys.argv[1] == "fetch":
        # Some docs say it'll be called with fetch, some say no arg at all
        try:
            get_uptime()
        except:
            sys.exit("Couldn't retrieve fritzbox uptime")