#!/bin/sh
##########################
# reddit_karma_
##########################
# Munin Plugin to track the karma activity of a Reddit user.
# 
# Copyright 2012 Mark Caudill <mark AT caudill DOT me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of    
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Usage:
# Create symbolic link from /etc/munin/plugins/reddit_karma_your_username
# to /usr/share/munin/plugins/reddit_karma_
#

# Get the Reddit username by parsing this scripts filename.
reddit_user=${0##*reddit_karma_}

##
# autoconf
##
if [ "$1" = "autoconf" ]; then
    # Check that curl is installed
    if hash curl >/dev/null 2>&1; then
        echo "yes"
    else
        echo "no (no curl installed)"
    fi
    exit 0
fi

##
# config
##
if [ "$1" = "config" ]; then
    echo "graph_title Reddit Karma for $reddit_user"
    echo 'graph_vlabel karma'
    echo 'graph_args --base 1000'
    echo 'graph_scale no'
    echo 'graph_vlabel Link Karma'
    echo 'graph_category other'
    echo 'comment_karma.label Comment Karma'
    echo 'comment_karma.draw LINE'
    echo 'link_karma.label Link Karma'
    echo 'link_karma.draw LINE'
    exit 0
fi

##
# Main
##
# Get current karma stats.
link_karma=$(curl -s http://www.reddit.com/user/${reddit_user}/about.json | grep -Eo 'link_karma": [0-9]+' | cut -d' ' -f2)
comment_karma=$(curl -s http://www.reddit.com/user/${reddit_user}/about.json | grep -Eo 'comment_karma": [0-9]+' | cut -d' ' -f2)

# Output karma stats.
echo "link_karma.value $link_karma"
echo "comment_karma.value $comment_karma"