# The LearningOnline Network with CAPA
# Homework Performance Chart
#
# (Navigate Maps Handler
#
# (Page Handler
#
# (TeX Content Handler
#
# 05/29/00,05/30 Gerd Kortemeyer)
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
# 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer)
#
# 3/1/1,6/1,17/1,29/1,30/1 Gerd Kortemeyer)
#
# 1/31 Gerd Kortemeyer
#
# 7/10/01 Behrouz Minaei
package Apache::lonchart;
use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet();
use HTML::TokeParser;
use GDBM_File;
# -------------------------------------------------------------- Module Globals
my %hash;
my @cols;
my @rowlabels;
my @students;
# ------------------------------------------------------------- Find out status
sub ExtractStudentData {
my ($index,$coid)=@_;
my ($sname,$sdom) = split( /\:/, $students[$index] );
my $shome=&Apache::lonnet::homeserver( $sname,$sdom );
my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$coid,$shome );
my %result=();
my $ResId;
my $Code;
my $Tries;
my $Wrongs;
my $Version;
my $Str=substr($students[$index].
' ',0,14).' ! '.
substr($rowlabels[$index].
' ',0,45).' ! ';
unless ($reply=~/^error\:/) {
map {
my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));
$result{$name}=$value;
} split(/\&/,$reply);
foreach $ResId (@cols) {
if ( !$ResId ) { $Str .= ' ! '; next; }
$ResId=~/(\d+)\.(\d+)/;
my $Prob = &Apache::lonnet::declutter( $hash{'map_id_'.$1} ).
'___'.$2.'___'.
&Apache::lonnet::declutter( $hash{'src_'.$ResId} );
$Code=' ';
$Tries = 0;
$Version = $result{"version:$Prob"};
if ( $Version ) {
my $vkeys = $result{"$Version:keys:$Prob"};
my @keys = split(/:/,$vkeys);
foreach my $Key (@keys) {
if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
my $Part = $1;
$Tries = $result{"$Version:$Prob:resource.$Part.tries"};
my $Val = $result{"$Version:$Prob:$Key"};
if ($Val eq 'correct_by_student'){$Code='*';}
elsif ($Val eq 'correct_by_override'){$Code = '+';}
elsif ($Val eq 'incorrect_attempted'){$Code = '.';}
elsif ($Val eq 'incorrect_by_override'){$Code = '-';}
elsif ($Val eq 'excused'){$Code = 'x';}
}
if (($Code eq '*')&&($Tries<10)){$Code=$Tries;}
}
}
$Str .= $Code;
}
}
return $Str;
}
#sub astatus {
# my ($rid,$student)=@_;
# my ($uname,$udom)=split(/\:/,$student);
# my $code=' ';
# $rid=~/(\d+)\.(\d+)/;
# my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
# &Apache::lonnet::declutter($hash{'src_'.$rid});
# my $answer=&Apache::lonnet::reply(
# "restore:$udom:$uname:".
# $ENV{'request.course.id'}.':'.
# &Apache::lonnet::escape($symb),
# &Apache::lonnet::homeserver($uname,$udom));
# my %returnhash=();
# map {
# my ($name,$value)=split(/\=/,$_);
# $returnhash{&Apache::lonnet::unescape($name)}=
# &Apache::lonnet::unescape($value);
# } split(/\&/,$answer);
# if ($returnhash{'version'}) {
# my $version;
# for ($version=1;$version<=$returnhash{'version'};$version++) {
# map {
# $returnhash{$_}=$returnhash{$version.':'.$_};
# } split(/\:/,$returnhash{$version.':keys'});
# }
# my $totaltries=0;
# map {
# if (($_=~/\.(\w+)\.solved$/) && ($_!~/^\d+\:/)) {
# my $part=$1;
# if ($returnhash{$_} eq 'correct_by_student') {
# unless (($code eq '.') || ($code eq '-')) { $code='*'; }
# $totaltries+=$returnhash{'resource.'.$part.'.tries'};
# } elsif ($returnhash{$_} eq 'correct_by_override') {
# unless (($code eq '.') || ($code eq '-')) { $code='+'; }
# } elsif ($returnhash{$_} eq 'incorrect_attempted') {
# $code='.';
# } elsif ($returnhash{$_} eq 'incorrect_by_override') {
# $code='-';
# } elsif ($returnhash{$_} eq 'excused') {
# unless (($code eq '.') || ($code eq '-')) { $code='x'; }
# }
# }
# } keys %returnhash;
# if (($code eq '*') && ($totaltries<10)) { $code="$totaltries"; }
# }
# return $code;
#}
# ------------------------------------------------------------ Build page table
sub tracetable {
my ($rid,$beenhere)=@_;
unless ($beenhere=~/\&$rid\&/) {
$beenhere.=$rid.'&';
if (defined($hash{'is_map_'.$rid})) {
if ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}}
eq 'sequence') {
$cols[$#cols+1]=0;
}
if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
(defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
&tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
'&'.$frid.'&');
if ($hash{'src_'.$frid}) {
if ($hash{'src_'.$frid}=~
/\.(problem|exam|quiz|assess|survey|form)$/) {
$cols[$#cols+1]=$frid;
}
}
}
} else {
if ($hash{'src_'.$rid}) {
if ($hash{'src_'.$rid}=~
/\.(problem|exam|quiz|assess|survey|form)$/) {
$cols[$#cols+1]=$rid;
}
}
}
if (defined($hash{'to_'.$rid})) {
map {
&tracetable($hash{'goesto_'.$_},$beenhere);
} split(/\,/,$hash{'to_'.$rid});
}
}
}
# ================================================================ Main Handler
sub handler {
my $r=shift;
if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
# ------------------------------------------- Set document type for header only
if ($r->header_only) {
if ($ENV{'browser.mathml'}) {
$r->content_type('text/xml');
} else {
$r->content_type('text/html');
}
$r->send_http_header;
return OK;
}
my $requrl=$r->uri;
# ----------------------------------------------------------------- Tie db file
if ($ENV{'request.course.fn'}) {
my $fn=$ENV{'request.course.fn'};
if (-e "$fn.db") {
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
# ------------------------------------------------------------------- Hash tied
# ------------------------------------------------------------------ Build page
# ---------------------------------------------------------------- Send headers
$r->content_type('text/html');
$r->send_http_header;
$r->print(
'<html><head><title>LON-CAPA Assessment Chart</title></head>');
$r->print('<body bgcolor="#FFFFFF">'.
'<script>window.focus();</script>'.
'<img align=right src=/adm/lonIcons/lonlogos.gif>'.
'<h1>Assessment Chart</h1>');
# ---------------------------------------------------------------- Course title
$r->print('<h1>'.
$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.'</h1>');
# ------------------------------- This is going to take a while, produce output
$r->rflush();
# ----------------------- Get first and last resource, see if there is anything
my $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
my $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
if (($firstres) && ($lastres)) {
# ----------------------------------------------------------------- Render page
my $cid=$ENV{'request.course.id'};
my $chome=$ENV{'course.'.$cid.'.home'};
my ($cdom,$cnum)=split(/\_/,$cid);
# ---------------------------------------------- Read class list and row labels
undef @rowlabels;
undef @students;
my $classlst=&Apache::lonnet::reply
('dump:'.$cdom.':'.$cnum.':classlist',$chome);
my $now=time;
unless ($classlst=~/^error\:/) {
map {
my ($name,$value)=split(/\=/,$_);
my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
my $active=1;
if (($end) && ($now>$end)) { $active=0; }
if ($active) {
my $thisindex=$#students+1;
$name=&Apache::lonnet::unescape($name);
$students[$thisindex]=$name;
my ($sname,$sdom)=split(/\:/,$name);
my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
if ($ssec==-1) {
$rowlabels[$thisindex]=
'Data not available: '.$name;
} else {
my %reply=&Apache::lonnet::idrget($sdom,$sname);
my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
':environment:lastname&generation&firstname&middlename',
&Apache::lonnet::homeserver($sname,$sdom));
$rowlabels[$thisindex]=
sprintf('%3s',$ssec).' '.$reply{$sname}.' ';
my $i=0;
map {
$i++;
if ( $_ ne '') {
$rowlabels[$thisindex].=&Apache::lonnet::unescape($_).' ';
}
if ($i == 2) {
chop($rowlabels[$thisindex]);
$rowlabels[$thisindex].=', ';
}
} split(/\&/,$reply);
}
}
} sort split(/\&/,$classlst);
} else {
$r->print('<h1>Could not access course data</h1>');
}
my $allstudents=$#students+1;
$r->print('<h3>'.$allstudents.' students</h3>');
$r->rflush();
# --------------- Find all assessments and put them into some linear-like order
&tracetable($firstres,'&'.$lastres.'&');
# ----------------------------------------------------------------- Start table
$r->print('<p><pre>');
my $index;
for ($index=0;$index<=$#students;$index++) {
# $r->print(
# substr($students[$index].
# ' ',0,14).' ! '.
# substr($rowlabels[$index].
# ' ',0,45).' ! ');
# map {
# if ($_) {
# $r->print(&astatus($_,$students[$index]));
# } else {
# $r->print(' ! ');
# }
# } @cols;
# $r->print("\n");
$r->print(&ExtractStudentData($index,$cid).'<br>');
$r->rflush();
}
$r->print('</pre>');
} else {
$r->print('<h3>Undefined course sequence</h3>');
}
$r->print('</body></html>');
# ------------------------------------------------------------- End render page
} else {
$r->content_type('text/html');
$r->send_http_header;
$r->print('<html><body>Coursemap undefined.</body></html>');
}
# ------------------------------------------------------------------ Untie hash
unless (untie(%hash)) {
&Apache::lonnet::logthis("<font color=blue>WARNING: ".
"Could not untie coursemap $fn (browse).</font>");
}
# -------------------------------------------------------------------- All done
return OK;
# ----------------------------------------------- Errors, hash could no be tied
}
} else {
$ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
return HTTP_NOT_ACCEPTABLE;
}
} else {
$ENV{'user.error.msg'}=
$r->uri.":vgr:0:0:Cannot view grades for complete course";
return HTTP_NOT_ACCEPTABLE;
}
}
1;
__END__
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