<?php

$scale_min = '0';
$scale_max = '100';

require 'includes/graphs/common.inc.php';

$rrd_options .= ' -b 1024';

$iter = '1';

$rrd_options .= " COMMENT:'                    Size      Free   % Used\\n'";

$hostname = gethostbyid($storage['device_id']);

$colour      = 'CC0000';
$colour_area = 'ffaaaa';

$descr = rrdtool_escape($storage['storage_descr'], 12);

$percentage = round($storage['storage_perc'], 0);

$background = get_percentage_colours($percentage);

$rrd_options .= " DEF:used=$rrd_filename:used:AVERAGE";
$rrd_options .= " DEF:free=$rrd_filename:free:AVERAGE";
$rrd_options .= ' CDEF:size=used,free,+';
$rrd_options .= ' CDEF:perc=used,size,/,100,*';
$rrd_options .= ' AREA:perc#'.$background['right'].':';
$rrd_options .= ' LINE1.25:perc#'.$background['left'].":'$descr'";
$rrd_options .= ' GPRINT:size:LAST:%6.2lf%sB';
$rrd_options .= ' GPRINT:free:LAST:%6.2lf%sB';
$rrd_options .= " GPRINT:perc:LAST:%5.2lf%%\\\\n";

if ($_GET['previous']) {
    $descr = rrdtool_escape('Prev '.$storage['storage_descr'], 12);

    $colour      = '99999999';
    $colour_area = '66666666';

    $rrd_options .= " DEF:usedX=$rrd_filename:used:AVERAGE:start=".$prev_from.':end='.$from;
    $rrd_options .= " DEF:freeX=$rrd_filename:free:AVERAGE:start=".$prev_from.':end='.$from;
    $rrd_options .= " SHIFT:usedX:$period";
    $rrd_options .= " SHIFT:freeX:$period";
    $rrd_options .= ' CDEF:sizeX=usedX,freeX,+';
    $rrd_options .= ' CDEF:percX=usedX,sizeX,/,100,*';
    $rrd_options .= ' AREA:percX#'.$colour_area.':';
    $rrd_options .= ' LINE1.25:percX#'.$colour.":'$descr'";
    $rrd_options .= ' GPRINT:sizeX:LAST:%6.2lf%sB';
    $rrd_options .= ' GPRINT:freeX:LAST:%6.2lf%sB';
    $rrd_options .= " GPRINT:percX:LAST:%5.2lf%%\\\\n";
}
