#!/bin/bash

###################################################
##                                               ##
##        disk_free jabber monitoring bot        ##
##         Author: david@socialnerds.org         ##
##                      v0.2                     ##
##                                               ##
###################################################

## timestamp for logfile
timestamp=$(date '+%d %B %Y %H:%M')
echo "info: starting df bot $timestamp"

## check if sendxmpp is installed
if [ $(aptitude search sendxmpp | awk '{print $1}') = "i" ]; then
    echo "info: sendxmpp found"
else
    if [ $(whoami) = "root" ]; then
        apt-get install sendxmpp
    else
        echo "error: permission denied"
        echo "info: install sendxmpp or run this scrip as superuser"
        exit 1
    fi
fi


## set and load configfile
if [ -z $1 ]; then
    configfile="/etc/mobots/df.conf"
    if [ -f $configfile ]; then
        source $configfile
    else
        echo "error: no config file $configfile" 
        exit 1
    fi
else
    configfile=$1
    if [ -f $configfile ]; then
        source $configfile
    else
        echo "error: no config file $configfile" 
        exit 1
    fi
fi


## check sendxmpp config
if [ -f ~/.sendxmpprc ]; then
    echo "info: jabber config found in ~/.sendxmpprc"
else

    if [ -z $port ]; then
        port="5222"
    else
        echo "info: using port $port"
    fi

    echo "$user@$server:$port $pass" > ~/.sendxmpprc
    chmod 600 ~/.sendxmpprc
    echo "info: created sendxmpp config in ~/.sendxmpprc"
fi


## check disks
set -- $disks
i="1"

for var in "$@"
do
    data=$(df -Ph | grep $var | sed -e 's/%//g' | awk '{print $5}')
    datathreshold=$(echo $thresholds | awk '{print $'$i'}')

    if [ $data -gt $datathreshold ]; then
        echo "info: $var reached threshold with $data%, sending notification to $watchdogs"
        echo "$hostname: $var is running out of space: $data%" | sendxmpp -r dfbot $watchdogs
    fi
    let i++
done


## exiting
echo "info: done"
exit 0