#!/usr/bin/perl
# Generated automatically from ctsim.cgi.in by configure.

use strict;
use CGI;
use File::Basename;
use Fcntl ':flock';

my $opt_d = 0;
my $bindir = "/opt/ctsim/bin";
$ENV{'PATH'} = $bindir;

my $fromhost = $ENV{'REMOTE_HOST'};

my $gmt_start = time();
my $gmt_end;
my $execution_time;

my %in;
CGI::ReadParse(\%in);

# Incoming variables 
#   Phantom_Name, Phantom_Nx, Phantom_Ny, Phantom_NSample
#   RS_NDet, RS_NRot, RS_NRay, RS_RotAngle,
#   IR_Nx, IR_Ny, IR_Filter, IR_Filter_Param

my $error = "";

my $Phantom_Name = FilterMetaChars($in{'Phantom_Name'});
my $Phantom_Nx = FilterToNumber($in{'Phantom_Nx'});
my $Phantom_Ny = FilterToNumber($in{'Phantom_Ny'});
my $Phantom_NSample = FilterToNumber($in{'Phantom_NSample'});
$error .= "Phantom name must not be blank<br>" if ($Phantom_Name eq "");
$error .= "Phantom NX and NY must be between 5 and 1024<br>" if ($Phantom_Nx < 5 || $Phantom_Nx > 1024 || $Phantom_Ny < 5 || $Phantom_Ny > 1024);
$error .= "Phantom NSample must be between 1 and 10<br>" if ($Phantom_NSample < 1 || $Phantom_NSample > 10);

my $RS_NDet = FilterToNumber($in{'RS_NDet'});
my $RS_NRot = FilterToNumber($in{'RS_NRot'});
my $RS_NRay = FilterToNumber($in{'RS_NRay'});
my $RS_RotAngle = FilterToNumber($in{'RS_RotAngle'});
$error .= "Raysum NDet must be between 5 and 1800<br>" if ($RS_NDet < 5 || $RS_NDet > 1800);
$error .= "Raysum NRot must be between 5 and 2048<br>" if ($RS_NRot < 5 || $RS_NRot > 2048);
$error .= "Raysum RotAngle must be between 0.1 and 2<br>" if ($RS_RotAngle < 0.1 || $RS_RotAngle > 2);

#my $IR_Nx = FilterToNumber($in{'IR_Nx'});
#my $IR_Ny = FilterToNumber($in{'IR_Ny'});
my $IR_Nx = $Phantom_Nx;
my $IR_Ny = $Phantom_Ny;
my $IR_Filter = FilterMetaChars($in{'IR_Filter'});
my $IR_Filter_Param = FilterToNumber($in{'IR_Filter_Param'});
my $IR_Interp = FilterMetaChars($in{'IR_Interp'});
my $IR_Backproj = FilterMetaChars($in{'IR_Backproj'});

my $Disp_Min = "auto";
my $Disp_Max = "auto";
$Disp_Min = FilterToNumber($in{'Disp_Min'}) if ($in{'Disp_Min'} ne "auto" && $in{'Disp_Min'} ne "");
$Disp_Max = FilterToNumber($in{'Disp_Max'}) if ($in{'Disp_Max'} ne "auto" && $in{'Disp_Max'} ne "");
if ($Disp_Min ne 'auto' && ! ($Disp_Min =~ /^[\d\.]+$/)) {
    $error .= "Display Minimum must be 'auto' or numeric (received '$Disp_Min') <br>";
}
if ($Disp_Max ne 'auto' && ! ($Disp_Max =~ /^[\d\.]+$/)) {
    $error .= "Display Maximum must be 'auto' or numeric (received '$Disp_Max') <br>";
}

my $MPI_Str = FilterMetaChars($in{'MPI'});
my $MPI = 0;
$MPI = 1 if ($MPI_Str eq "yes");

$error .= "IR Nx and Ny must be between 5 and 1024<br>" if ($IR_Nx < 5 || $IR_Nx > 1024 || $IR_Ny < 5 || $IR_Ny > 1024);
$error .= "IR Filter Parameter must be between 0 and 1<br>" if ($IR_Filter_Param < 0 || $IR_Filter_Param > 1);


my $jobdir = "/opt/apache/htdocs/ctsim/webdata";
my $tmpid = $$;
my $auto_window_img = "std0.1";
my $auto_window_diff = "std1";
my $auto_window_rs = "full";
my $datadir = "/opt/apache/htdocs/ctsim/webdata";
my $url_datadir = "/ctsim/webdata";
my $logfile = "$jobdir/ctsim.log";

my $result_fname = "$datadir/result-$tmpid.html";
my $phantom_fname = "$datadir/phantom-$tmpid.sdf";
my $rs_fname = "$datadir/rs-$tmpid.rs";
my $ir_fname = "$datadir/ir-$tmpid.sdf";
my $rs_sdf_fname = "$datadir/rs-$tmpid.sdf";
my $diff_fname = "$datadir/diff-$tmpid.sdf";
my $phantom_png = "$datadir/phantom-$tmpid.png";
my $ir_png = "$datadir/ir-$tmpid.png";
my $rs_png = "$datadir/rs-$tmpid.png";
my $diff_png = "$datadir/diff-$tmpid.png";

my $result_url = "$url_datadir/result-$tmpid.html";
my $phantom_png_url = "$url_datadir/phantom-$tmpid.png";
my $ir_png_url = "$url_datadir/ir-$tmpid.png";
my $rs_png_url = "$url_datadir/rs-$tmpid.png";
my $diff_png_url = "$url_datadir/diff-$tmpid.png";

my $ir_ver = "$bindir/ir";
my $rs_ver = "$bindir/rs";
my $gp_ver = "$bindir/gp";
my $diff_ver = "$bindir/sdf-2";
$ir_ver = "/opt/lam/bin/mpirun N N $bindir/ir-mpi" if $MPI;
$rs_ver = "/opt/lam/bin/mpirun N N $bindir/rs-mpi" if $MPI;
$gp_ver = "/opt/lam/bin/mpirun N N $bindir/gp-mpi" if $MPI;

my $gp_cmd = "$gp_ver $phantom_fname $Phantom_Nx $Phantom_Ny --phantom $Phantom_Name --nsample $Phantom_NSample";
my $rs_cmd = "$rs_ver $rs_fname $RS_NDet $RS_NRot --phantom $Phantom_Name --nray $RS_NRay --rotangle $RS_RotAngle";
my $rs_sdf_cmd = "$bindir/rs2sdf $rs_fname $rs_sdf_fname";
my $ir_cmd = "$ir_ver $rs_fname $ir_fname $IR_Nx $IR_Ny --filter $IR_Filter --filter-param $IR_Filter_Param --interp $IR_Interp --backproj $IR_Backproj";
my $diff_cmd = "$diff_ver $phantom_fname $ir_fname $diff_fname --comp";

my $window_options = "--auto $auto_window_img";
if ($Disp_Min ne 'auto') {
    $window_options .= " --min $Disp_Min";
}
if ($Disp_Max ne 'auto') {
    $window_options .= " --max $Disp_Max";
}

my $png1_cmd = "$bindir/sdf2img $phantom_fname $phantom_png $window_options --stats --format png";
my $png2_cmd = "$bindir/sdf2img $ir_fname $ir_png $window_options --stats --format png";
my $png3_cmd = "$bindir/sdf2img $rs_sdf_fname $rs_png --auto $auto_window_rs --stats --format png";
my $png4_cmd = "$bindir/sdf2img $diff_fname $diff_png --auto $auto_window_diff --stats --format png";

my $title = "CT Simulation Results";

my $out = head();
$out .= "<HTML> <HEAD><TITLE> $title </TITLE></HEAD>\n";
$out .= "<BODY  BGCOLOR=\"#FFFFFF\" TEXT=\"#000000\"  VLINK=\"#800020\" LINK=\"#0000FF\">\n";
$out .= "<H1>$title</H1><HR>\n";

if ($opt_d) {
    $out .= "<H2>Commands</H2>\n";
    $out .= "$gp_cmd<br>\n$rs_cmd<br>\n$rs_sdf_cmd<br>\n$ir_cmd<br>\n$diff_cmd<br>\n$png1_cmd<br>\n$png2_cmd<br>\n" .
            "$png3_cmd<br>\n$png4_cmd<br>\n";
}

my $cmdout = "";
if ($error ne "") {
    $out .= "<FONT COLOR=\"#FF0000\">The following errors were present in your request.<br>\n";
    $out .= "Please correct them and try submitting your request again.</FONT><br>\n";
    $out .= "<i>$error</i>";
} else {
    my $gp_out;
    my $rs_out;
    my $rs_sdf_out;
    my $ir_out;
    my $diff_out;
    my $png_gp_out;
    my $png_ir_out;
    my $png_rs_out;
    my $png_diff_out;
    if (1) {
	$gp_out = `$gp_cmd`;
	$rs_out .= `$rs_cmd`;
	$rs_sdf_out .= `$rs_sdf_cmd`;
	$ir_out .= `$ir_cmd`;
	$diff_out .= `$diff_cmd`;
	$png_gp_out .= `$png1_cmd`;
	$png_ir_out .= `$png2_cmd`;
	$png_rs_out .= `$png3_cmd`;
	$png_diff_out .= `$png4_cmd`;
    } else {
	$gp_out = `$gp_cmd 2>&1`;
	$rs_out .= `$rs_cmd 2>&1`;
	$rs_sdf_out .= `$rs_sdf_cmd 2>&1`;
	$ir_out .= `$ir_cmd 2>&1`;
	$diff_out .= `$diff_cmd 2>&1`;
	$png_gp_out .= `$png1_cmd 2>&1`;
	$png_ir_out .= `$png2_cmd 2>&1`;
	$png_rs_out .= `$png3_cmd 2>&1`;
	$png_diff_out .= `$png4_cmd 2>&1`;
    }
    $cmdout = "$gp_cmd\n $gp_out $rs_cmd\n $rs_out $rs_sdf_cmd\n $rs_sdf_out $ir_cmd\n $ir_out $diff_cmd\n $diff_out $png1_cmd\n $png_gp_out $png2_cmd\n $png_ir_out $png3_cmd\n $png_rs_out $png4_cmd\n $png_diff_out";
    if (open(LOGFILE,">> $logfile")) {
	flock(LOGFILE,LOCK_EX);
	seek(LOGFILE, 0, 2);
	print LOGFILE "Job $tmpid\n";
	print LOGFILE $cmdout;
	print LOGFILE "----------------------------------------------------\n";
	flock(LOGFILE,LOCK_UN);
	close(LOGFILE);
    }
    $gmt_end = time();
    $execution_time = $gmt_end - $gmt_start;
    if ($opt_d)
    {
	$out .= "<H3>Command Output</H3>$cmdout<HR>\n";
    }
    my $png_gp_out_html = $png_gp_out;
    my $png_ir_out_html = $png_ir_out;
    my $png_rs_out_html = $png_rs_out;
    my $png_diff_out_html = $png_diff_out;
    $png_gp_out_html =~ s/\n/<br>/gms;
    $png_ir_out_html =~ s/\n/<br>/gms;
    $png_rs_out_html =~ s/\n/<br>/gms;
    $png_diff_out_html =~ s/\n/<br>/gms;
    $out .= "<TABLE><TR><TD>Phantom Image</TD><TD>Reconstructed Image</TD></TR>\n";
    $out .= "<TR><TD><IMG SRC=\"$phantom_png_url\"><br><FONT SIZE=1>$png_gp_out</FONT></TD>\n";
    $out .= "<TD><IMG SRC=\"$ir_png_url\"><br><FONT SIZE=1>$png_ir_out</FONT></TD></TR>\n";
    $out .= "<TR><TD>Raysum Sinusoid</TD><TD>Phantom/Reconst Error</TD></TR>\n";
    $out .= "<TR><TD><IMG SRC=\"$rs_png_url\"><br><FONT SIZE=1>$png_rs_out</FONT></TD>\n";
    $out .= "<TD><IMG SRC=\"$diff_png_url\"><br><FONT SIZE=2>$diff_out</FONT><br><FONT SIZE=1>$png_diff_out</FONT></TD></TR>\n";
    $out .= "</TABLE>";
    $out .= "Execution time: $execution_time seconds\n";
}

$out .= "<HR>\n";
$out .= "Return to <A HREF=\"/ctsim/index.html\">CT Simulation Designer</a>.<br>\n";
$out .= "Return to <A HREF=\"www.med-info.com\">Med-Info</a>.\n";
$out .= "</BODY> </HTML>";
$out .= "\n";

if (open(OUTFILE,"> $result_fname"))
{
    flock(OUTFILE,LOCK_EX);
    print OUTFILE $out;
    flock(OUTFILE,LOCK_UN);
    close OUTFILE;
    print "Location: $result_url\n\n";
}
else
{
    print "Content-type: text/plain\n\n";
    print "The simulator was unable to create an result file.\n";
}
if (open(JOBFILES,"> $jobdir/$tmpid"))
{
    flock(JOBFILES,LOCK_EX);
    print JOBFILES "gmt_start=$gmt_start\n";
    print JOBFILES "gmt_end=$gmt_end\n";
    print JOBFILES "execution_time=$execution_time\n";
    print JOBFILES "Phantom_Name=$Phantom_Name\n";
    print JOBFILES "Phantom_Nx=$Phantom_Nx\n";
    print JOBFILES "Phantom_Ny=$Phantom_Nx\n";
    print JOBFILES "Phantom_NSample=$Phantom_NSample\n";
    print JOBFILES "RS_NDet=$RS_NDet\n";
    print JOBFILES "RS_NRot=$RS_NRot\n";
    print JOBFILES "RS_NRay=$RS_NRay\n";
    print JOBFILES "RS_RotAngle=$RS_RotAngle\n";
    print JOBFILES "IR_Nx=$IR_Nx\n";
    print JOBFILES "IR_Ny=$IR_Ny\n";
    print JOBFILES "IR_Interp=$IR_Interp\n";
    print JOBFILES "IR_Filter=$IR_Filter\n";
    print JOBFILES "IR_Filter_Param=$IR_Filter_Param\n";
    print JOBFILES "IR_Backproj=$IR_Backproj\n";
    print JOBFILES "Disp_Min=$Disp_Min\n";
    print JOBFILES "Disp_Max=$Disp_Max\n";
    print JOBFILES "MPI=$MPI\n";
    print JOBFILES "Files=$result_fname,$phantom_fname,$rs_fname,$ir_fname,$phantom_png,$ir_png,$rs_sdf_fname,$rs_png\n" if ($error eq "");
    printf JOBFILES "cmdout=$cmdout\n";
    flock(JOBFILES,LOCK_UN);
    close JOBFILES;
}


exit;


sub internal_error
{
  my $out = head();
  $out .= "<H1>Internal error</H1>
  Please notify <A HREF=mailto:webmaster\@med-info.com>webmaster\@med-info.com</A>
  </BODY>";
  print $out;
  exit;
}

sub head
{
#  "Content: text/html\n\n";
}


sub FilterMetaChars
{
   my $var = pop(@_);
   $var =~ /^(\w+)$/;  
   $1;
}

sub FilterToNumber
{
   my $var = pop(@_);
   $var =~ /^(\d*\.*\d*)$/;  
   $1;
}