#!/opt/local/bin/perl

use RRDs;

# define location of rrdtool databases
my $rrd = '/Users/madison';

# define location of images
my $img = '/Users/madison/Sites';

my $temp =`/usr/bin/tempmonitor -tv`;
# remove eol chars and white space

$temp =~ s/[\n ]//g;

# split data
($time,$c1,$c2,$c3,$c4,$d1,$d2,$d3,$d4) = split(/,/, $temp);

#print "temp c1: $c1 degrees C\n";
#print "temp c2: $c2 degrees C\n";
#print "temp c3: $c3 degrees C\n";
#print "temp c4: $c4 degrees C\n";
#print "temp d1: $d1 degrees C\n";
#print "temp d2: $d2 degrees C\n";
#print "temp d3: $d3 degrees C\n";
#print "temp d4: $d4 degrees C\n";

# if rrdtool database doesn't exist, create it
if (! -e "$rrd/temperature.rrd")
{
        RRDs::create "$rrd/temperature.rrd",
                "-s 60",
                "DS:core1:GAUGE:600:-273:5000",
                "DS:core2:GAUGE:600:-273:5000",
                "DS:core3:GAUGE:600:-273:5000",
                "DS:core4:GAUGE:600:-273:5000",
                "DS:disk1:GAUGE:600:-273:5000",
                "DS:disk2:GAUGE:600:-273:5000",
                "DS:disk3:GAUGE:600:-273:5000",
                "DS:disk4:GAUGE:600:-273:5000",
                "RRA:AVERAGE:0.5:1:1200",
                "RRA:MIN:0.5:12:2400",
                "RRA:MAX:0.5:12:2400",
                "RRA:AVERAGE:0.5:12:2400";
}

# insert values into rrd
RRDs::update "$rrd/temperature.rrd", "N:$c1:$c2:$c3:$c4:$d1:$d2:$d3:$d4";
if ($ERROR = RRDs::error) { print "$0: unable to update database: $ERROR\n"; }

# make graphs
RRDs::graph "Desktop/core.png",
        "-t", "CPU Core Temperatures",
        "-h", "200", "-w", "600",
        "-a", "PNG",
        "-e", "now",
        "-x", "HOUR:1:DAY:1:HOUR:2:0:%H",
        "-v", "Temperature",
        "DEF:core1=$rrd/temperature.rrd:core1:AVERAGE",
        "DEF:core2=$rrd/temperature.rrd:core2:AVERAGE",
        "DEF:core3=$rrd/temperature.rrd:core3:AVERAGE",
        "DEF:core4=$rrd/temperature.rrd:core4:AVERAGE",
        "LINE1:core1#0000ff:Core 1",
        "LINE1:core2#00aa00:Core 2",
        "LINE1:core3#ff0000:Core 3",
        "LINE1:core4#000000:Core 4";
        #"GPRINT:core1:LAST:Core 1\: %2.1lfC",
        #"GPRINT:core2:LAST:Core 2\: %2.1lfC",
        #"GPRINT:core3:LAST:Core 3\: %2.1lfC",
        #"GPRINT:core4:LAST:Core 4\: %2.1lfC";
if ($ERROR = RRDs::error) { print "$0: unable to generate graph: $ERROR\n"; }