#!/usr/bin/env python
"""
  fritzbox_traffic - A munin plugin for Linux to monitor AVM Fritzbox WAN traffic
  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
  Like Munin, this plugin is licensed under the GNU GPL v2 license
  http://www.opensource.org/licenses/GPL-2.0
  This plugin requires the fritzconnection plugin. To install it using pip:
  pip install fritzconnection
  This plugin supports the following munin configuration parameters:
  #%# family=auto contrib
  #%# capabilities=autoconf
"""

import os
import sys

from fritzconnection import FritzConnection


def print_values():
    try:
        conn = FritzConnection(address=os.environ['fritzbox_ip'])
    except Exception as e:
        sys.exit("Couldn't get WAN traffic")

    down_traffic = conn.call_action('WANCommonInterfaceConfig', 'GetTotalBytesReceived')['NewTotalBytesReceived']
    print ('down.value %d' % down_traffic)

    up_traffic = conn.call_action('WANCommonInterfaceConfig', 'GetTotalBytesSent')['NewTotalBytesSent']
    print ('up.value %d' % up_traffic)

    if not os.environ.get('traffic_remove_max'):
        max_down_traffic = conn.call_action('WANCommonInterfaceConfig', 'GetCommonLinkProperties')[
            'NewLayer1DownstreamMaxBitRate']
        print ('maxdown.value %d' % max_down_traffic)

        max_up_traffic = conn.call_action('WANCommonInterfaceConfig', 'GetCommonLinkProperties')[
            'NewLayer1UpstreamMaxBitRate']
        print ('maxup.value %d' % max_up_traffic)


def print_config():
    print "graph_title AVM Fritz!Box WAN traffic"
    print "graph_args --base 1000"
    print "graph_vlabel bits in (-) / out (+) per \${graph_period}"
    print "graph_category network"
    print "graph_order down up maxdown maxup"
    print "down.label received"
    print "down.type DERIVE"
    print "down.graph no"
    print "down.cdef down,8,*"
    print "down.min 0"
    print "down.max 1000000000"
    print "up.label bps"
    print "up.type DERIVE"
    print "up.draw AREA"
    print "up.cdef up,8,*"
    print "up.min 0"
    print "up.max 1000000000"
    print "up.negative down"
    print "up.info Traffic of the WAN interface."
    if not os.environ.get('traffic_remove_max'):
        print "maxdown.label received"
        print "maxdown.type GAUGE"
        print "maxdown.graph no"
        print "maxup.label MAX"
        print "maxup.type GAUGE"
        print "maxup.negative maxdown"
        print "maxup.draw LINE1"
        print "maxup.info Maximum speed of the WAN interface."


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"  # Some docs say it'll be called with fetch, some say no arg at all
    elif len(sys.argv) == 1 or (len(sys.argv) == 2 and sys.argv[1] == 'fetch'):
        try:
            print_values()
        except:
            sys.exit("Couldn't retrieve fritzbox traffic")