#!/usr/bin/perl -w


use warnings;
use strict;

use Time::HiRes qw ( gettimeofday ) ;
use CGI qw(:standard);
use GD::Graph::hbars;
use CGI::Carp (fatalsToBrowser);

my $data  = "E"x1020; #start with using 1k blocks shall we?
my %cgi_vars;

foreach my $pair ( split ( "&", $ENV{'QUERY_STRING'} ) ) {
   my ( $var, $val ) = split ("=", $pair);
   $cgi_vars{$var} = $val;
}

#cgi headers:
print "content-type: text/html\n\n";


#take time


my ( $start_seconds, $start_microseconds ) = gettimeofday;
print "Start Seconds:$start_seconds Start MicroSeconds:$start_microseconds<BR/>\n";


#print stuff to thingy

if ( $cgi_vars{"data_size"} ) {
  for ( my $count=0; $count < $cgi_vars{"data_size"}; $count++ ) {
   print "<!",$data,"->\n";
  }
}

#take time

my ( $end_seconds, $end_microseconds ) = gettimeofday;
print "End  Seconds:$end_seconds  End  MicroSeconds:$end_microseconds<BR/>\n";

#compare

my $time_delta = ($end_seconds - $start_seconds) + ( ( $end_microseconds - $start_microseconds) / 1000000);

if ( $cgi_vars{"data_size"} ) {
  print "your data transfer of ", $cgi_vars{"data_size"}, "k took ", $time_delta, " seconds<BR/>\n";
  print "your bandwidth is ",$cgi_vars{"data_size"} / $time_delta ," kilobytes/sec<BR/>\n";
  my @data  = "$time_delta";
  my $graph = GD::Graph::hbars->new(400, 300);
     $graph->set(
         x_label    => 'Transfer Data',
         y_label    => 'Some Label',
         title      => 'Adelphia Speed Test'
     );
  my $gd    = my $my_graph->plot(\@data);
  open(IMG, '>../htdocs/graph.png') or die $!;
  binmode IMG;
  print IMG $gd->png;
  close IMG;
}
else {
  print "please invoke as $ENV{'SCRIPT_NAME'}?data_size=100<BR/> \n";
}
exit;