<?php

## Dear Tobias. You write in Perl, this makes me hate you forever.
## This is my translation of Smokeping's graphing.
## Thanks to Bill Fenner for Perl->Human translation:>

$scale_min = 0;
$scale_rigid = TRUE;

include("includes/graphs/common.inc.php");
include("smokeping_common.inc.php");


$i = 0;
$pings = 20;
$iter = 0;
$colourset = "mixed";

if($width > "500")
{
  $descr_len=18;
} else {
  $descr_len=8;
  $descr_len += round(($width - 250) / 8);
}

$unit_text = "Latency";

if($width > "500")
{
  $rrd_options .= " COMMENT:'".substr(str_pad($unit_text, $descr_len+5),0,$descr_len+5)."    Current      Average     Maximum      '";
  if (!$nototal) { $rrd_options .= " COMMENT:'Total      '"; }
  $rrd_options .= " COMMENT:'\l'";
} else {
  $rrd_options .= " COMMENT:'".substr(str_pad($unit_text, $descr_len+5),0,$descr_len+5)."     Now         Ave          Max\l'";

}

foreach($smokeping_files[$direction][$device['hostname']] as $source => $filename)
{

  if (!isset($config['graph_colours'][$colourset][$iter])) { $iter = 0; }
  $colour = $config['graph_colours'][$colourset][$iter];
  $iter++;

  $descr = str_replace(":", "\:", substr(str_pad($source, $descr_len),0,$descr_len));

  $filename = $config['smokeping']['dir'] . $filename;
  $rrd_options .= " DEF:median$i=".$filename.":median:AVERAGE ";
  $rrd_options .= " DEF:loss$i=".$filename.":loss:AVERAGE";
  $rrd_options .= " CDEF:ploss$i=loss$i,$pings,/,100,*";
  $rrd_options .= " CDEF:dm$i=median$i";
#  $rrd_options .= " CDEF:dm$i=median$i,0,".$max->{$start}.",LIMIT";

  /// start emulate Smokeping::calc_stddev
  foreach(range(1, $pings) as $p)
  {
    $rrd_options .= " DEF:pin".$i."p".$p."=".$filename.":ping".$p.":AVERAGE";
    $rrd_options .= " CDEF:p".$i."p".$p."=pin".$i."p".$p.",UN,0,pin".$i."p".$p.",IF";
  }

  foreach(range(2, $pings) as $p)
  {
    $pings_options .= ",p".$i."p".$p.",UN,+";
    $m_options     .= ",p".$i."p".$p.",+";
    $sdev_options  .= ",p".$i."p".$p.",m".$i.",-,DUP,*,+";
  }

  $rrd_options .= " CDEF:pings".$i."=".$pings .",p".$i."p1,UN". $pings_options . ",-";
  $rrd_options .= " CDEF:m".$i."=p".$i."p1".$m_options.",pings".$i.",/";
  $rrd_options .= " CDEF:sdev".$i."=p".$i."p1,m".$i.",-,DUP,*".$sdev_options.",pings".$i.",/,SQRT";
  // end emulate Smokeping::calc_stddev

  $rrd_options .= " CDEF:dmlow$i=dm$i,sdev$i,2,/,-";
  $rrd_options .= " CDEF:s2d$i=sdev$i";
  $rrd_options .= " AREA:dmlow$i";
  $rrd_options .= " AREA:s2d$i#".$colour."30::STACK";
  $rrd_options .= " LINE1:dm$i#".$colour.":$descr";

#  $rrd_options .= " LINE1:sdev$i#000000:$descr";

  $rrd_options .= " VDEF:avmed$i=median$i,AVERAGE";
  $rrd_options .= " VDEF:avsd$i=sdev$i,AVERAGE";
  $rrd_options .= " CDEF:msr$i=median$i,POP,avmed$i,avsd$i,/";
  $rrd_options .= " VDEF:avmsr$i=msr$i,AVERAGE";

  $rrd_options .= " GPRINT:avmed$i:'%5.1lf %ss av md '";
  $rrd_options .= " GPRINT:ploss$i:AVERAGE:'%5.1lf %% av ls'";

#  $rrd_options .= " GPRINT:sdev$i:'%5.1lf %s ms sd'";
  $rrd_options .= " GPRINT:avmsr$i:'%5.1lf %s am/as\\l'";


  $i++;
}

?>