--- loncom/homework/grades.pm	2001/10/05 21:51:14	1.16
+++ loncom/homework/grades.pm	2002/07/03 21:05:33	1.35
@@ -1,8 +1,37 @@
+# The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
+#
+# $Id: grades.pm,v 1.35 2002/07/03 21:05:33 ng Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
 # 2/9,2/13 Guy Albertelli
 # 6/8 Gerd Kortemeyer
 # 7/26 H.K. Ng
 # 8/20 Gerd Kortemeyer
+# Year 2002
+# June, July 2002 H.K. Ng
+#
 
 package Apache::grades;
 use strict;
@@ -24,6 +53,7 @@ sub moreinfo {
     if ($ENV{'form.symb'}) {
       $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
     }
+#    $request->print('<input type="hidden" name="command" value="submission" />'."\n");
     $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
     $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");
     $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");
@@ -33,56 +63,160 @@ sub moreinfo {
   return '';
 }
 
+sub verifyreceipt {
+    my $request=shift;
+    my $courseid=$ENV{'request.course.id'};
+#    my $cdom=$ENV{"course.$courseid.domain"};
+#    my $cnum=$ENV{"course.$courseid.num"};
+    my $receipt=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.
+                $ENV{'form.receipt'};
+    $receipt=~s/[^\-\d]//g;
+    my $symb=$ENV{'form.symb'};
+    unless ($symb) {
+	$symb=&Apache::lonnet::symbread($ENV{'form.url'});
+    }
+    if ((&Apache::lonnet::allowed('mgr',$courseid)) && ($symb)) {
+        $request->print('<h1>Verifying Submission Receipt '.$receipt.'</h1>');
+        my $matches=0;
+        my ($classlist) = &getclasslist('all','0');
+        foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
+            my ($uname,$udom)=split(/\:/,$student);
+            if ($receipt eq 
+             &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {
+               $request->print('Matching '.$student.'<br>');
+               $matches++;
+	   }
+        }
+        $request->printf('<p>'.$matches." match%s</p>",$matches <= 1 ? '' : 'es');
+# needs to print who is matched
+    }
+    return '';
+}
+
+sub student_gradeStatus {
+  my ($url,$udom,$uname) = @_;
+  my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
+  my %record= &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
+  foreach my $part (&getpartlist($url)) {
+    my ($temp,$part,$type)=split(/_/,$part);
+    if ($type eq 'solved') {
+      my ($status,$foo)=split(/_/,$record{"resource.$part.$type"},2);
+      $status = 'partial' if ($foo =~ /^partially/);
+      $status = 'nothing' if ($status eq '');
+      return $type,$status;
+    }
+  }
+  return '';
+}
+
+sub get_fullname {
+    my ($sname,$sdom) = @_;
+    my %name=&Apache::lonnet::get('environment', ['lastname','generation',
+						  'firstname','middlename'],
+				  $sdom,$sname);
+    my $fullname;
+    my ($tmp) = keys(%name);
+    if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
+	$fullname=$name{'lastname'}.$name{'generation'};
+	if ($fullname =~ /[^\s]+/) { $fullname.=', '; }
+	$fullname.=$name{'firstname'}.' '.$name{'middlename'};
+    }
+    return $fullname;
+}
 
 sub listStudents {
   my ($request) = shift;
-  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-  my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-  $request->print ("Found $cdom:$cnum:$chome<br />");
-  my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
-  foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
-      my ($sname,$sdom) = split(/:/,$student);
+  my $cdom      =$ENV{"course.$ENV{'request.course.id'}.domain"};
+  my $cnum      =$ENV{"course.$ENV{'request.course.id'}.num"};
+  my $getsec    =$ENV{'form.section'};
+  my $submitonly=$ENV{'form.submitonly'};
+
+  $request->print(<<ENDTABLEST);
+<h2><font color="#339933">&nbsp;View Submissions for a Student or a Group of Students</font></h2>
+&nbsp;<font size=+1><b>Resource:</b> $ENV{'form.url'}<br /><br />
+<form action="/adm/grades" method="post">&nbsp;<b>View Options</b></font><br />
+&nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" checked> no 
+<input type="radio" name="vProb" value="yes"> yes 
+&nbsp;&nbsp;&nbsp;<b>Submissions: </b><input type="radio" name="lastSub" value="last" checked> last 
+<input type="radio" name="lastSub" value="all"> all 
+<input type="hidden" name="section" value="$getsec">
+<input type="hidden" name="submitonly" value="$submitonly">
+<input type="hidden" name="response" value="$ENV{'form.response'}">
+<input type="hidden" name="handgrade" value="$ENV{'form.handgrade'}">
+<table border="0"><tr><td bgcolor="#777777">
+<table border="0"><tr bgcolor="#e6ffff">
+<td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Username&nbsp;</b></td>
+<td><b>&nbsp;Fullname&nbsp;</b></td><td><b>&nbsp;Domain&nbsp;</b></td>
+<td><b>&nbsp;Grade Status&nbsp;</b></td></tr>
+ENDTABLEST
+  if ($ENV{'form.url'}) {
+      $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
+  }
+  if ($ENV{'form.symb'}) {
+      $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
+  }
+  $request->print('<input type="hidden" name="command" value="processGroup" />'."\n");
 
-      my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
-		     ':environment:lastname&generation&firstname&middlename',
-		      &Apache::lonnet::homeserver($sname,$sdom));
-      #print "reply=$reply<br>";
-      my (@nameparts) = split /&/,$reply;
-#      my $sfullname = $Apache::lonnet::unescape($nameparts[0]);
+  my ($classlist) = &getclasslist($getsec,'0');
+  foreach my $student ( sort(@{ $$classlist{$getsec} }) ) {
+      my ($sname,$sdom) = split(/:/,$student);
+      my ($type,$status) = &student_gradeStatus($ENV{'form.url'},$cdom,$sname);
+      next if ($status eq 'nothing' && $submitonly eq 'yes');
 
+      my $fullname = &get_fullname($sname,$sdom);
       if ( $Apache::grades::viewgrades eq 'F' ) {
-	  $request->print('<form action="/adm/grades" method="post">'."\n");
-	  $request->print("$sname @nameparts\n");
-	  if ($ENV{'form.url'}) {
-	    $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
-	  }
-	  if ($ENV{'form.symb'}) {
-	    $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
-	  }
-	  $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
-	  $request->print('<input type="hidden" name="student" value="'.$sname.'" />'."\n");
-	  $request->print('<input type="hidden" name="domain" value="'.$sdom.'" />'."\n");
-	  $request->print('<input type="submit" name="submit" value="View" />'."<br />\n");
-	  $request->print('</form>');
+	  $request->print("\n".'<tr bgcolor="#ffffe6">'.
+			  '<td align="center"><input type=checkbox name="stuinfo" value="'.
+			  $student.':'.$fullname.'"></td>'."\n".
+			  '<td>&nbsp;'.$sname.'&nbsp;</td>'."\n".
+			  '<td>&nbsp;'.$fullname.'&nbsp;</td>'."\n".
+			  '<td align="middle">&nbsp;'.$sdom.'&nbsp;</td>'."\n");
+	  $request->print('<td align="middle">&nbsp;'.$status.'&nbsp;</td>'."\n");
+
+	  $request->print('</tr>');
       }
   }
+  $request->print('</table></td></tr></table>');
+  $request->print('<input type="submit" name="submit" value="View/Grade" /><form />');
+}
 
+sub processGroup {
+  my ($request)  = shift;
+  my $ctr        = 0;
+  my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}
+                           : ($ENV{'form.stuinfo'}));
+  my $total      = scalar(@stuchecked)-1;
+  if ($stuchecked[0] eq '') {
+      &userError($request,'No student was selected for viewing/grading.');
+      return;
+  }
+  foreach (@stuchecked) {
+      my ($sname,$sdom,$fullname) = split(/:/);
+      $ENV{'form.student'} = $sname;
+      $ENV{'form.fullname'} = $fullname;
+      &submission($request,$ctr,$total);
+      $ctr++;
+  }
+  return 'The End';
 }
 
+sub userError {
+    my ($request, $reason, $step) = @_;
+    $request->print('<h3><font color="red">LON-CAPA User Error</font></h3><br />'."\n");
+    $request->print('<b>Reason: </b>'.$reason.'<br /><br />'."\n");
+    $request->print('<b>Step: </b>'.($step ne '' ? $step : 'Use your browser back button to correct')
+		    .'<br /><br />'."\n");
+    return '';
+}
 
 #FIXME - needs to handle multiple matches
 sub finduser {
   my ($name) = @_;
   my $domain = '';
-
   if ( $Apache::grades::viewgrades eq 'F' ) {
-    #get classlist
-    my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-    my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-    #print "Found $cdom:$cnum:$chome<br />";
-    my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
-    foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
-      my ($posname,$posdomain) = split(/:/,$student);
+    my ($classlist) = &getclasslist('all','0');
+    foreach ( sort(@{ $$classlist{'all'} }) ) {
+      my ($posname,$posdomain) = split(/:/);
       if ($posname =~ $name) { $name=$posname; $domain=$posdomain; last; }
     }
     return ($name,$domain);
@@ -92,22 +226,28 @@ sub finduser {
 }
 
 sub getclasslist {
-  my ($coursedomain,$coursenum,$coursehome,$hideexpired) = @_;
-  my $classlist=&Apache::lonnet::reply("dump:$coursedomain:$coursenum:classlist",$coursehome);
-  my %classlist=();
+  my ($getsec,$hideexpired) = @_;
+  my ($coursedomain,$coursenum) = split(/_/,$ENV{'request.course.id'});
+  my %classlist=&Apache::lonnet::dump('classlist',$coursedomain,$coursenum);
   my $now = time;
-  foreach my $record (split /&/, $classlist) {
-    my ($name,$value)=split(/=/,&Apache::lonnet::unescape($record));
-    my ($end,$start)=split(/:/,$value);
+  my (@holdsec,@sections);
+  foreach my $student (keys(%classlist)) {
+    my ($end,$start)=split(/:/,$classlist{$student});
     # still a student?
     if (($hideexpired) && ($end) && ($end < $now)) {
-      #print "Skipping:$name:$end:$now<br />\n";
       next;
     }
-    #print "record=$record<br>";
-    push( @{ $classlist{'allids'} }, $name); 
+    my ($unam,$udom) = split(/:/,$student,2);
+    my $section = &Apache::lonnet::usection($udom,$unam,$ENV{'request.course.id'});
+    $section = ($section ne '-1' ? $section : 'no');
+    push @holdsec,$section;
+    push (@{ $classlist{$getsec} }, $student) if ($getsec eq 'all' || $getsec eq $section);
+  }
+  my %seen = ();
+  foreach my $item (@holdsec) {
+      push (@sections, $item) unless $seen{$item}++;
   }
-  return (%classlist);
+  return (\%classlist,\@sections);
 }
 
 sub getpartlist {
@@ -115,7 +255,7 @@ sub getpartlist {
   my @parts =();
   my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
   foreach my $key (@metakeys) {
-    if ( $key =~ m/stores_([0-9]+)_.*/ ) {
+    if ( $key =~ m/stores_([0-9]+)_.*/) {
       push(@parts,$key);
     }
   }
@@ -126,57 +266,48 @@ sub viewstudentgrade {
   my ($url,$symb,$courseid,$student,@parts) = @_;
   my $result ='';
   my $cellclr = '"#ffffdd"';
-  my ($stuname,$domain) = split(/:/,$student);
+  my ($username,$domain) = split(/:/,$student);
 
-  my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
+  my $fullname = &get_fullname($username,$domain);
+  my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$username);
 
-  $result.="<tr><td bgcolor=$cellclr>$stuname</td><td bgcolor=$cellclr align=\"middle\">$domain</td>\n";
+  $result.="<tr bgcolor=$cellclr><td>$username</td><td>$fullname</td><td align=\"middle\">$domain</td>\n";
   foreach my $part (@parts) {
     my ($temp,$part,$type)=split(/_/,$part);
-    #print "resource.$part.$type = ".$record{"resource.$part.$type"}." <br />\n";
-    if ($type eq 'awarded') {
-      my $score=$record{"resource.$part.$type"};
-      $result.="<td bgcolor=$cellclr align=\"middle\"><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n";
-    } elsif ($type eq 'tries') {
-      my $score=$record{"resource.$part.$type"};
-      $result.="<td bgcolor=$cellclr align=\"middle\"><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n"
+    my $score=$record{"resource.$part.$type"};
+    if ($type eq 'awarded' || $type eq 'tries') {
+      $result.='<td align="middle"><input type="text" name="GRADE.'.$student.'.'.$part.'.'.$type.
+	  '" value="'.$score.'" size="4" /></td>'."\n";
     } elsif ($type eq 'solved') {
-      my $score=$record{"resource.$part.$type"};
-      $result.="<td bgcolor=$cellclr align=\"middle\"><select name=\"GRADE.$student.$part.$type\">\n";
-      if ($score =~ /^correct/) {
-	$result.="<option selected=\"on\">correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";
-      } elsif ($score =~ /^incorrect/) {
-	$result.="<option>correct</option>\n<option selected=\"on\">incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";
-      } elsif ($score eq '') {
-	$result.="<option>correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option selected=\"on\">nothing</option>\n";
-      } elsif ($score =~ /^excused/) {
-	$result.="<option>correct</option>\n<option>incorrect</option>\n<option selected=\"on\">excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";
-      } elsif ($score =~ /^ungraded/) {
-	$result.="<option>correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option selected=\"on\">ungraded</option>\n<option>nothing</option>\n";
-      }
+      my ($status,$foo)=split(/_/,$score,2);
+      $result.="<td align=\"middle\"><select name=\"GRADE.$student.$part.$type\">\n";
+      my $optsel = '<option>correct</option><option>incorrect</option><option>excused</option>'.
+	  '<option>ungraded</option><option>partial</option><option>nothing</option>'."\n";
+      $status = 'nothing' if ($status eq '');
+      $optsel =~ s/<option>$status/<option selected="on">$status/;
+      $result.=$optsel;
       $result.="</select></td>\n";
     }
   }
-  $result.='</tr>';
+  $result.='<td></td></tr>';
   return $result;
 }
-#FIXME need to look at the meatdata <stores> spec on what type of data to accept and provide an
+
+#FIXME need to look at the metadata <stores> spec on what type of data to accept and provide an
 #interface based on that, also do that to above function.
 sub setstudentgrade {
   my ($url,$symb,$courseid,$student,@parts) = @_;
-
+  print "set student grade parts=@parts<br>";
   my $result ='';
-
   my ($stuname,$domain) = split(/:/,$student);
-
   my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
-
   my %newrecord;
 
   foreach my $part (@parts) {
     my ($temp,$part,$type)=split(/_/,$part);
     my $oldscore=$record{"resource.$part.$type"};
     my $newscore=$ENV{"form.GRADE.$student.$part.$type"};
+    print "old=$oldscore:new=$newscore:<br>";
     if ($type eq 'solved') {
       my $update=0;
       if ($newscore eq 'nothing' ) {
@@ -187,10 +318,11 @@ sub setstudentgrade {
       } elsif ($oldscore !~ m/^$newscore/) {
 	$update=1;
 	$result.="Updating $stuname to $newscore<br />\n";
-	if ($newscore eq 'correct') { $newscore = 'correct_by_override'; }
+	if ($newscore eq 'correct')   { $newscore = 'correct_by_override'; }
 	if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }
-	if ($newscore eq 'excused') { $newscore = 'excused'; }
-	if ($newscore eq 'ungraded') { $newscore = 'ungraded_attempted'; }
+	if ($newscore eq 'excused')   { $newscore = 'excused'; }
+	if ($newscore eq 'ungraded')  { $newscore = 'ungraded_attempted'; }
+	if ($newscore eq 'partial')   { $newscore = 'correct_partially_by_override'; }
       } else {
 	#$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";
       }
@@ -205,32 +337,564 @@ sub setstudentgrade {
     }
   }
   if ( scalar(keys(%newrecord)) > 0 ) {
-    $newrecord{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";
-    &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);
+    $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
+#    &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);
 
     $result.="Stored away ".scalar(keys(%newrecord))." elements.<br />\n";
   }
   return $result;
 }
 
+#
+# --------------------------- show submissions of a student, option to grade --------
 sub submission {
-  my ($request) = @_;
-  my $url=$ENV{'form.url'};
-  $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
-  if ($ENV{'form.student'} eq '') { &moreinfo($request,"Need student login id"); return ''; }
-#  if ($ENV{'form.student'} eq '') { &listStudents($request); return ''; }
+  my ($request,$counter,$total) = @_;
+
+  if ($counter == 0) {
+      $request->print(<<JAVASCRIPT);
+<script type="text/javascript" language="javascript">
+  function updateRadio(radioButton,formtextbox,formsel,wgt) {
+     var pts = formtextbox.value;
+     var resetbox =false;
+     if (isNaN(pts) || pts < 0) {
+	alert("A number equal or greater than 0 is expected. Entered value = "+pts);
+	for (var i=0; i<radioButton.length; i++) {
+	   if (radioButton[i].checked) {
+	      formtextbox.value = i;
+	      resetbox = true;
+	   }
+	}
+	if (!resetbox) {
+	   formtextbox.value = "";
+	}
+	return;
+    }
+
+    for (var i=0; i<radioButton.length; i++) {
+	radioButton[i].checked=false;
+	if (pts == i) {
+	   radioButton[i].checked=true;
+	}
+    }
+    updateSelect(formsel,pts,wgt);
+  }
+
+  function writeBox(formrad,formsel,pts,wgt) {
+    formrad.value = pts;
+    updateSelect(formsel,pts,wgt);
+    return;
+  }
+
+  function updateSelect(formsel,pts,wgt) {
+    if (pts == 0) {
+      formsel[1].selected = true;
+    }
+    if (pts > 0 && pts < wgt) {
+      formsel[4].selected = true;
+    }
+    if (pts == wgt) {
+      formsel[0].selected = true;
+    }
+    return;
+  }
+
+  function keywords(keyform) {
+    var keywds = keyform.value;
+    var nret = prompt("Keywords list, separate by a space or comma. Add/delete to list if desired.",keywds);
+    if (nret==null) return;
+    keyform.value = nret;
+    return;
+  }
+
+  function addmsg(msgform) {
+    var msg  = msgform.value;
+    var nret = prompt("Enter the message you wish to send to the student.",msg);
+    if (nret==null) return;
+    msgform.value = nret;
+    return;
+  }
+
+  function savedmsg(msgform) {
+    var Nmsg  = msgform.value;
+    var nret = prompt("Number of saved messages = ",Nmsg);
+    if (nret==null) return;
+    msgform.value = nret;
+    return;
+  }
+
+</script>
+JAVASCRIPT
+}
+  (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+  if ($ENV{'form.student'} eq '') { &moreinfo($request,'Need student login id'); return ''; }
   my ($uname,$udom) = &finduser($ENV{'form.student'});
-  if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }
-  my $symb;
-  if ($ENV{'form.symb'}) {
-    $symb=$ENV{'form.symb'};
-  } else {
-    $symb=&Apache::lonnet::symbread($url);
+  if ($uname eq '') { &moreinfo($request,'Unable to find student'); return ''; }
+
+  my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
+  if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
+  my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
+#
+# header info
+  if ($counter == 0) {
+      $request->print('<h2><font color="#339933">Submission Record</font></h2>');
+  }
+
+#
+# option to display problem, only once else it cause problems with the form later since the problem has a form.
+  if ($ENV{'form.vProb'} eq 'yes' && $counter == 0) {
+      my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
+						   $ENV{'request.course.id'});
+      my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
+							 $ENV{'request.course.id'});
+      my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
+      $result.='<table border="0" width="100%"><tr><td bgcolor="#e6ffff">';
+      $result.='<b>Student\'s view of the problem</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';
+      $result.='<b>Correct answer:</b><br />'.$companswer;
+      $result.='</td></tr></table>';
+      $result.='</td></tr></table><br />';
+      $request->print($result);
+  }
+#
+# beginning of form
+  if ($counter == 0) {
+      my %keyhash = &Apache::lonnet::get
+                ('nohist_handgrade',[$symb.'_keywords'],
+                 $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+		 $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+
+      $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".
+		      '<input type="hidden" name="symb"       value="'.$symb.'" />'."\n".
+		      '<input type="hidden" name="url"        value="'.$url.'" />'."\n".
+		      '<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".
+		      '<input type="hidden" name="lastSub"    value="'.$last.'" />'."\n".
+		      '<input type="hidden" name="section"    value="'.$ENV{'form.section'}.'">'."\n".
+		      '<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".
+		      '<input type="hidden" name="response"   value="'.$ENV{'form.response'}.'">'."\n".
+		      '<input type="hidden" name="handgrade"  value="'.$ENV{'form.handgrade'}.'">'."\n".
+		      '<input type="hidden" name="command"    value="handgrade" />'."\n".
+		      '<input type="hidden" name="keywords"   value="'.$keyhash{$symb.'_keywords'}.'" />'."\n".
+		      '<input type="hidden" name="addmsg"     value="" />'."\n".
+		      '<input type="hidden" name="savemsgN"   value="3" />'."\n".
+		      '<input type="hidden" name="savemsg0"   value="Good Job!" />'."\n".
+		      '<input type="hidden" name="savemsg1"   value="Needs a better explanation." />'."\n".
+		      '<input type="hidden" name="savemsg2"   value="Read the book before submitting such garbagge!" />'."\n".
+		      '<input type="hidden" name="NCT"'.
+		      ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1').'" />'."\n");
+
+      if ($ENV{'form.handgrade'} eq 'yes') {
+	  $request->print(<<KEYWORDS);
+&nbsp;<b>Grading Options</b> 
+<a href="javascript:keywords(document.SCORE.keywords)"; TARGET=_self>Keywords list</a>&nbsp; &nbsp;
+<a href="javascript:addmsg(document.SCORE.addmsg)"; TARGET=_self>Add a message</a>&nbsp; &nbsp;
+<a href="javascript:savedmsg(document.SCORE.savemsgN)"; TARGET=_self>Saved messages</a><br /><br />
+KEYWORDS
+      }
+  }
+
+#
+# Student info
+  $request->print(($counter == 0 ? '' : '<br /><hr><br />'));
+  my $result.='<table border="0"><tr><td><b>Username: </b>'.$uname.
+      '</td><td><b>Fullname: </b>'.
+	  ($ENV{'form.fullname'} ne '' ? $ENV{'form.fullname'} : &get_fullname($uname,$udom)).
+	      '</td><td><b>Domain: </b>'.$udom.'</td></tr>';
+  if ($ENV{'form.handgrade'} eq 'yes') {
+      my $subonly = &get_last_submission($symb,$uname,$udom,$ENV{'request.course.id'});
+      my ($classlist) = &getclasslist('all','0');
+      my @collaborators;
+      foreach ( sort(@{ $$classlist{'all'} }) ) {
+	  my ($sname,$sdom) = split(/:/);
+	  push @collaborators,$sname if (grep /\b$sname(\b|\.)/i,$subonly);
+      }
+      push @collaborators,'leede','carlandmm','freyniks'; # as a test to display collaborators.
+      if (scalar(@collaborators) != 0) {
+	  $result.='<tr><td colspan=3><b>Collaborators: </b>';
+	  foreach (@collaborators) {
+	      $result.=$_.' ('.&get_fullname($_,$udom).') &nbsp; &nbsp;';
+	  }
+	  $result.='</td></tr>'."\n";
+	  $result.='<input type="hidden" name="collaborator'.$counter.
+	      '" value="'.(join ':',@collaborators).'" />'."\n";
+      }
+  }
+  $result.='<tr><td colspan=3><b>Resource: </b>'.$url.'</td></tr></table>'."\n";
+  $request->print($result);
+#
+# print student answer
+  $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
+							   $ENV{'request.course.id'},$last,
+							   '.submission','Apache::grades::keywords_highlight'));
+#
+#
+  my $wgt    = &Apache::lonnet::EXT('resource.partid.weight',$symb,$udom,$uname);
+  my $wgtmsg = ($wgt > 0 ? '(problem weight)' : '<font color="red">problem weight assigned by computer</font>');
+  $wgt       = ($wgt > 0 ? $wgt : '1');
+  my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
+  my $score  = ($record{'resource.0.awarded'} eq '' ? '' : $record{'resource.0.awarded'}*$wgt);
+
+#
+# display grading options
+  $result='<input type="hidden" name="WGT'.$counter.'" value="'.$wgt.'" />'.
+      '<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'.$udom.'" />'."\n";
+  $result.='<table border="0"><tr><td><b>Points</b></td><td>';
+  my $ctr = 0;
+
+  $result.='<table border="0"><tr>';  # display radio buttons in a nice table with 10 across
+  while ($ctr<=$wgt) {
+      $result.= '<td><input type="radio" name="RADVAL'.$counter.'" '.
+	  'onclick="javascript:writeBox(this.form.GRADE_BOX'.$counter.
+	    ',this.form.GRADE_SEL'.$counter.','.$ctr.','.$wgt.')" '.
+		($score eq $ctr ? 'checked':'').' /> '.$ctr."</td>\n";
+      $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
+      $ctr++;
+  }
+  $result.='</tr></table>';
+
+  $result.='</td><td>&nbsp;<b>or</b>&nbsp;</td>';
+  $result.='<td><input type="text" name="GRADE_BOX'.$counter.'"'.
+      ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
+       'onChange="javascript:updateRadio(this.form.RADVAL'.$counter.
+        ',this.form.GRADE_BOX'.$counter.
+	   ',this.form.GRADE_SEL'.$counter.',\''.$wgt.'\')" /></td>'."\n";
+  $result.='<td>/'.$wgt.' '.$wgtmsg.' </td><td>';
+
+  foreach my $part (&getpartlist($url)) {
+    my ($temp,$part,$type)=split(/_/,$part);
+    if ($type eq 'solved') {
+      my ($status,$foo)=split(/_/,$record{"resource.$part.$type"},2);
+      $status = 'partial' if ($foo =~ /partially/);
+      $status = 'nothing' if ($status eq '');
+      $result.='<select name="GRADE_SEL'.$counter.'">'."\n";
+      my $optsel = '<option>correct</option><option>incorrect</option>'.
+	  '<option>excused</option><option>ungraded</option>'.
+	      '<option>partial</option><option>nothing</option>'."\n";
+      $optsel =~ s/<option>$status/<option selected="on">$status/;
+      $result.=$optsel;
+      $result.="</select></td></tr>\n";
+    }
+  }
+  $result.='</table>';
+  $request->print($result);
+#
+# print end of form
+  if ($counter == $total) {
+      my $endform.='<table border="0"><tr><td><input type="submit" name="gradeOpt" value="Save & Next" />';
+      my $ntstu ='<select name="NTSTU">'.
+	  '<option>1</option><option>2</option>'.
+	      '<option>3</option><option>5</option>'.
+		  '<option>7</option><option>10</option></select>'."\n";
+      my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');
+      $ntstu =~ s/<option>$nsel/<option selected="on">$nsel/;
+      $endform.=$ntstu.'student(s) &nbsp;&nbsp;';
+      $endform.='<input type="submit" name="gradeOpt" value="Next" />&nbsp';
+      $endform.='<input type="submit" name="gradeOpt" value="Previous" />&nbsp';
+      $endform.='(Next and Previous do not save the scores.)';
+      $endform.='</td><tr></table></form>';
+      $request->print($endform);
+  }
+  return '';
+}
+
+sub get_last_submission {
+  my ($symb,$username,$domain,$course)=@_;
+  if ($symb) {
+     my (%returnhash)=&Apache::lonnet::restore($symb,$course,$domain,$username);
+     if ($returnhash{'version'}) {
+	my %lasthash=();
+	my $version;
+	for ($version=1;$version<=$returnhash{'version'};$version++) {
+	  foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
+	      $lasthash{$_}=$returnhash{$version.':'.$_};
+	  }
+        }
+	foreach ((keys %lasthash)) {
+	    if ($_ =~ /\.submission$/) {return $lasthash{$_}}
+	}
+	return '';
+    }
+  }
+}
+
+sub keywords_highlight {
+  my $string  = shift;
+  (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+  my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
+  my %keyhash = &Apache::lonnet::get
+      ('nohist_handgrade',[$symb.'_keywords'],
+       $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+       $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+  my @keylist = split(/[,\s+]/,$keyhash{$symb.'_keywords'});
+  foreach my $word (@keylist) {
+      next if ($word eq '');
+      $string =~ s/\b$word(\b|\.)/\<font color\=red\>$word\<\/font\>/gi;
+  }
+  return $string;
+}
+
+sub processHandGrade {
+  my ($request) = shift;
+  my $url    = $ENV{'form.url'};
+  my $symb   = $ENV{'form.symb'};
+  my $button = $ENV{'form.gradeOpt'};
+  my $ngrade = $ENV{'form.NCT'};
+  my $ntstu  = $ENV{'form.NTSTU'};
+  my $keywords= $ENV{'form.keywords'};
+  my $addmsg  = $ENV{'form.addmsg'};
+  print "addmsg=$addmsg<br>";
+  if ($keywords ne '') {
+      my $crsname = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+      my $crsdom  = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+      my $putresult = &Apache::lonnet::put
+                ('nohist_handgrade',{$symb.'_keywords' => $keywords},
+                 $crsdom,$crsname);
+  }
+  my (@parts) = sort(&getpartlist($url));
+
+  if ($button eq 'Save & Next') {
+      my $ctr = 0;
+      while ($ctr < $ENV{'form.NCT'}) {
+	  my ($uname,$udom) = split(/:/,$ENV{'form.unamedom'.$ctr});
+	  &saveHandGrade($url,$symb,$uname,$udom,$ctr,@parts);
+	  if ($ENV{'form.collaborator'.$ctr}) {
+	      my (@collaborators) = split(/:/,$ENV{'form.collaborator'.$ctr});
+	      foreach (@collaborators) {
+		  &saveHandGrade($url,$symb,$_,$udom,$ctr,@parts);
+	      }
+	  }
+	  $ctr++;
+      }
+  }
+  my $firststu = $ENV{'form.unamedom0'};
+  my $laststu  = $ENV{'form.unamedom'.($ngrade-1)};
+
+  my ($classlist) = &getclasslist($ENV{'form.section'},'0');
+
+  my (@nextlist,@prevlist);
+  my ($nextflg,$prevflg,$ctr,$ctprev) = (0,0,0,0);
+  foreach my $student ( sort(@{ $$classlist{$ENV{'form.section'}} }) ) {
+      my ($uname,$udom) = split(/:/,$student);
+      if ($nextflg == 1 && $button =~ /Next$/) {
+	  push @nextlist,$uname if ($ctr < $ntstu);
+	  $ctr++;
+      }
+      $nextflg = 1 if ($student eq $laststu);
+      $prevflg = 1 if ($student eq $firststu);
+      if ($prevflg == 0 && $button eq 'Previous') {
+	  push @prevlist,$uname;
+	  $ctprev++;
+      }
+  }
+  if ($button eq 'Previous') {
+      if ($ctprev <= $ntstu) {
+	  @nextlist = @prevlist;
+      } else {
+	  my $idx = 0;
+	  my $start = $ctprev - $ntstu;
+	  while ($idx < $ntstu) {
+	      $nextlist[$idx] = $prevlist[$start+$idx];
+	      $idx++;
+	  }
+      }
   }
+  $ctr = 0;
+  my $total = scalar(@nextlist)-1;
+  foreach my $student (@nextlist) {
+      $ENV{'form.student'} = $student;
+      &submission($request,$ctr,$total);
+      $ctr++;
+  }
+
+  return 'The End';
+}
+
+sub saveHandGrade {
+  my ($url,$symb,$stuname,$domain,$newflg,@parts) = @_;
+  my %record=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);
+  my %newrecord;
+
+  foreach my $part (@parts) {
+    my ($temp,$part,$type)=split(/_/,$part);
+    my $oldscore=$record{"resource.$part.$type"};
+    my $newscore;
+    if ($type eq 'awarded' && $newflg >= 0) {
+	my $pts    = ($ENV{'form.GRADE_BOX'.$newflg} ne '' ? 
+		      $ENV{'form.GRADE_BOX'.$newflg} : $ENV{'form.RADVAL'.$newflg});
+	my $wgt    = $ENV{'form.WGT'.$newflg};
+#	my $sel    = $ENV{'form.GRADE_SEL'.$newflg};
+	$newscore  = $pts/$wgt if ($wgt != 0);
+    }
+    if ($type eq 'solved') {
+      $newscore = $ENV{'form.GRADE_SEL'.$newflg} if ($newflg >= 0);
+      my $update=0;
+      if ($newscore eq 'nothing' ) {
+	if ($oldscore ne '') {
+	  $update=1;
+	  $newscore = '';
+	}
+      } elsif ($oldscore !~ m/^$newscore/) {
+	$update=1;
+	if ($newscore eq 'correct')   { $newscore = 'correct_by_override'; }
+	if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }
+	if ($newscore eq 'excused')   { $newscore = 'excused'; }
+	if ($newscore eq 'ungraded')  { $newscore = 'ungraded_attempted'; }
+	if ($newscore eq 'partial')   { $newscore = 'correct_partially_by_override'; }
+      }
+      if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }
+    } else {
+      if ($oldscore ne $newscore) {
+	$newrecord{"resource.$part.$type"}=$newscore;
+      }
+    }
+  }
+  if ( scalar(keys(%newrecord)) > 0 ) {
+      $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
+#      while (my ($k,$v) = each %newrecord) {
+#	 print "k=$k:v=$v:<br>\n";
+#      }
+#      print "symb=$symb,courseid=$ENV{'request.course.id'},dom=$domain,name=$stuname<br>";
+#     &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},$domain,$stuname);
+  }
+  return '';
+}
+
+sub get_symb_and_url {
+  my ($request) = @_;
+  (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+  my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
-  my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
-						      $ENV{'request.course.id'});
-  my $result="<h2> Submission Record </h2>  $uname:$udom for $url <br />".$answer;
+  return ($symb,$url);
+}
+
+sub show_grading_menu_form {
+  my ($symb,$url)=@_;
+  my $result.='<form action="/adm/grades" method="post">'."\n".
+    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
+      '<input type="hidden" name="url" value="'.$url.'" />'."\n".
+	'<input type="hidden" name="command" value="gradingmenu" />'."\n".
+	  '<input type="submit" name="submit" value="Grading Menu" />'."\n".
+	    '</form>'."\n";
+  return $result;
+}
+
+sub gradingmenu {
+  my ($request) = @_;
+  my ($symb,$url)=&get_symb_and_url($request);
+  if (!$symb) {return '';}
+  my $allkeys = &Apache::lonnet::metadata($url,'keys');
+  my $handgrade = ($allkeys =~ /parameter_.*?_handgrade/ ? 'yes' : 'no');
+  my ($responsetype,$foo) = split(/_/,&Apache::lonnet::metadata($url,'packages'));
+
+  my $result='<h2>&nbsp;<font color="#339933">Select a Grading Method</font></h2>';
+  $result.='<table border="0">';
+  $result.='<tr><td><font size=+1><b>Resource: </b></font></td>'.
+      '<td><font size=+1>'.$url.'</font></td></tr>';
+  $result.='<tr><td><font size=+1><b>Type: </b></font></td>'.
+      '<td><font size=+1>'.$responsetype.'&nbsp;&nbsp;<b>Handgrade: </b>'.$handgrade.'</font></td></tr>';
+  $result.='</table>';
+
+  $result.=&view_edit_entire_class_form($symb,$url).'<br />';
+  $result.=&upcsvScores_form($symb,$url).'<br />';
+  $result.=&viewGradeaStu_form($symb,$url,$responsetype,$handgrade).'<br />';
+  $result.=&verifyReceipt_form($symb,$url);
+  return $result;
+}
+
+sub view_edit_entire_class_form {
+  my ($symb,$url)=@_;
+  my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
+  $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
+  $result.='&nbsp;<b>View/Grade Entire Class</b></td></tr>'."\n";
+  $result.='<tr bgcolor=#ffffe6><td>'."\n";
+  $result.='<form action="/adm/grades" method="post">'."\n".
+    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
+      '<input type="hidden" name="url" value="'.$url.'" />'."\n".
+	  '<input type="hidden" name="command" value="viewgrades" />'."\n";
+  $result.='&nbsp;<b>Display students who has: </b>'.
+      '<input type="radio" name="submitonly" value="yes" checked> submitted'.
+	  '<input type="radio" name="submitonly" value="all"> everybody <br /><br />';
+  $result.='&nbsp;<input type="submit" name="submit" value="View/Grade" /></form>'."\n";
+  $result.='</td></tr></table>'."\n";
+  $result.='</td></tr></table>'."\n";
+  return $result;
+}
+
+sub upcsvScores_form {
+  my ($symb,$url) = @_;
+  if (!$symb) {return '';}
+  my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
+  $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
+  $result.='&nbsp;<b>Specify a file containing the class scores for above resource</b></td></tr>'."\n";
+  $result.='<tr bgcolor=#ffffe6><td>'."\n";
+  my $upfile_select=&Apache::loncommon::upfile_select_html();
+  $result.=<<ENDUPFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
+<input type="hidden" name="symb" value="$symb" />
+<input type="hidden" name="url" value="$url" />
+<input type="hidden" name="command" value="csvuploadmap" />
+$upfile_select
+<br />&nbsp;<input type="submit" name="submit" value="Upload Grades" />
+</form>
+ENDUPFORM
+  $result.='</td></tr></table>'."\n";
+  $result.='</td></tr></table>'."\n";
+  return $result;
+}
+
+sub viewGradeaStu_form {
+  my ($symb,$url,$response,$handgrade) = @_;
+  my ($classlist,$sections) = &getclasslist('all','0');
+  my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
+  $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
+  $result.='&nbsp;<b>View/Grade an Individual Student\'s Submission</b></td></tr>'."\n";
+  $result.='<tr bgcolor=#ffffe6><td>'."\n";
+  $result.='<form action="/adm/grades" method="post">'."\n".
+     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
+      '<input type="hidden" name="url" value="'.$url.'" />'."\n".
+       '<input type="hidden" name="response" value="'.$response.'" />'."\n".
+        '<input type="hidden" name="handgrade" value="'.$handgrade.'" />'."\n".
+	 '<input type="hidden" name="command" value="submission" />'."\n";
+
+  $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";
+  foreach my $section (sort (@$sections)) {
+      $result.= '<option>'.$section.'</option>'."\n";
+  }
+  $result.= '<option selected="on">all</select>'."\n";
+  $result.='&nbsp;&nbsp;<b>Display students who has: </b>'.
+      '<input type="radio" name="submitonly" value="yes" checked> submitted'.
+	  '<input type="radio" name="submitonly" value="all"> everybody <br />';
+  $result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />' 
+      if (grep /no/,@$sections);
+
+  $result.='<br />&nbsp;<input type="submit" name="submit" value="View/Grade" />'."\n".
+      '</form>'."\n";
+  $result.='</td></tr></table>'."\n";
+  $result.='</td></tr></table>'."\n";
+  return $result;
+}
+
+sub verifyReceipt_form {
+  my ($symb,$url) = @_;
+  my $cdom=$ENV{"course.$ENV{'request.course.id'}.domain"};
+  my $cnum=$ENV{"course.$ENV{'request.course.id'}.num"};
+  my $hostver=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'});
+
+  my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";
+  $result.='<table width=100% border=0><tr><td bgcolor=#e6ffff>'."\n";
+  $result.='&nbsp;<b>Verify a Submission Receipt Issued by this Server</td></tr>'."\n";
+  $result.='<tr bgcolor=#ffffe6><td>'."\n";
+  $result.='<form action="/adm/grades" method="post">'."\n";
+  $result.='&nbsp;<tt>'.$hostver.'-<input type="text" name="receipt" size="4"></tt><br />'."\n";
+  $result.='&nbsp;<input type="submit" name="submit" value="Verify Receipt">'."\n";
+  $result.='<input type="hidden" name="command" value="verify">'."\n";
+  if ($ENV{'form.url'}) {
+      $result.='<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />';
+  }
+  if ($ENV{'form.symb'}) {
+      $result.='<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />';
+  }
+  $result.='</form>';
+  $result.='</td></tr></table>'."\n";
+  $result.='</td></tr></table>'."\n";
   return $result;
 }
 
@@ -239,24 +903,19 @@ sub viewgrades {
   my $result='';
 
   #get resource reference
-  my $url=$ENV{'form.url'};
-  $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
-  my $symb=$ENV{'form.symb'};
-  if (!$symb) { $symb=&Apache::lonnet::symbread($url); }
-  if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
-
+  my ($symb,$url)=&get_symb_and_url($request);
+  if (!$symb) {return '';}
   #get classlist
   my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-  my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-  #print "Found $cdom:$cnum:$chome<br />";
-  my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
+  #print "Found $cdom:$cnum<br />";
+  my ($classlist) = &getclasslist('all','0');
   my $headerclr = '"#ccffff"';
   my $cellclr = '"#ffffcc"';
 
   #get list of parts for this problem
-  my (@parts) = &getpartlist($url);
+  my (@parts) = sort(&getpartlist($url));
 
-  $request->print ("<h2><font color=\"#339966\">Manual Grading</font></h2>");
+  $request->print ("<h2><font color=\"#339933\">Manual Grading</font></h2>");
 
   #start the form
   $result = '<form action="/adm/grades" method="post">'."\n".
@@ -264,21 +923,24 @@ sub viewgrades {
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".
 	'<input type="hidden" name="command" value="editgrades" />'."\n".
 	  '<input type="submit" name="submit" value="Submit Changes" />'."\n".
-	    '<table border=0><tr><td bgcolor="#999999">'."\n".
+	    '<table border=0><tr><td bgcolor="#777777">'."\n".
 	     '<table border=0>'."\n".
-	      '<tr><td bgcolor='.$headerclr.'>UserId</td><td bgcolor='.$headerclr.'>Domain</td>'."\n";
+	      '<tr bgcolor='.$headerclr.'><td><b>Username</b></td><td><b>Name</b></td><td><b>Domain</b></td>'."\n";
   foreach my $part (@parts) {
      my $display=&Apache::lonnet::metadata($url,$part.'.display');
      if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
-     $result.='<td bgcolor='.$headerclr.'>'.$display.'</td>'."\n";
-   }
-  $result.="</tr>";
+     $result.='<td><b>'.$display.'</b></td>'."\n";
+  }
+  $result.='</tr>';
   #get info for each student
-  foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
+  foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
+    my $display=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
+#      print "ID=$ENV{'request.course.id'}:STU=$student:DIS=$display:<br>\n";
     $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
   }
-  $result.='</table></td></tr></table><input type="submit" name="submit" value="Submit Changes" /></form>';
-
+  $result.='</table></td></tr></table>';
+  $result.='<input type="submit" name="submit" value="Submit Changes" /></form>';
+  $result.=&show_grading_menu_form($symb,$url);
   return $result;
 }
 
@@ -290,10 +952,9 @@ sub editgrades {
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$symb:$ENV{'form.url'}"); return ''; }
   my $url=$ENV{'form.url'};
   #get classlist
-  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-  my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-  #print "Found $cdom:$cnum:$chome<br />";
-  my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
+#  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
+  #print "Found $cdom:$cnum<br />";
+  my ($classlist) = &getclasslist('all','0');
 
   #get list of parts for this problem
   my (@parts) = &getpartlist($url);
@@ -304,7 +965,7 @@ sub editgrades {
 	'<input type="hidden" name="command" value="viewgrades" />'."\n".
 	  '<input type="submit" name="submit" value="See Grades" /> <br />'."\n";
 
-  foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
+  foreach my $student ( sort(@{ $$classlist{'all'} }) ) {
     $result.=&setstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
   }
 
@@ -312,6 +973,237 @@ sub editgrades {
   return $result;
 }
 
+sub csvupload_javascript_reverse_associate {
+  return(<<ENDPICK);
+  function verify(vf) {
+    var foundsomething=0;
+    var founduname=0;
+    var founddomain=0;
+    for (i=0;i<=vf.nfields.value;i++) {
+      tw=eval('vf.f'+i+'.selectedIndex');
+      if (i==0 && tw!=0) { founduname=1; }
+      if (i==1 && tw!=0) { founddomain=1; }
+      if (i!=0 && i!=1 && tw!=0) { foundsomething=1; }
+    }
+    if (founduname==0 || founddomain==0) {
+      alert('You need to specify at both the username and domain');
+      return;
+    }
+    if (foundsomething==0) {
+      alert('You need to specify at least one grading field');
+      return;
+    }
+    vf.submit();
+  }
+  function flip(vf,tf) {
+    var nw=eval('vf.f'+tf+'.selectedIndex');
+    var i;
+    for (i=0;i<=vf.nfields.value;i++) {
+      //can not pick the same destination field for both name and domain
+      if (((i ==0)||(i ==1)) && 
+          ((tf==0)||(tf==1)) && 
+          (i!=tf) &&
+          (eval('vf.f'+i+'.selectedIndex')==nw)) {
+        eval('vf.f'+i+'.selectedIndex=0;')
+      }
+    }
+  }
+ENDPICK
+}
+
+sub csvupload_javascript_forward_associate {
+  return(<<ENDPICK);
+  function verify(vf) {
+    var foundsomething=0;
+    var founduname=0;
+    var founddomain=0;
+    for (i=0;i<=vf.nfields.value;i++) {
+      tw=eval('vf.f'+i+'.selectedIndex');
+      if (tw==1) { founduname=1; }
+      if (tw==2) { founddomain=1; }
+      if (tw>2) { foundsomething=1; }
+    }
+    if (founduname==0 || founddomain==0) {
+      alert('You need to specify at both the username and domain');
+      return;
+    }
+    if (foundsomething==0) {
+      alert('You need to specify at least one grading field');
+      return;
+    }
+    vf.submit();
+  }
+  function flip(vf,tf) {
+    var nw=eval('vf.f'+tf+'.selectedIndex');
+    var i;
+    //can not pick the same destination field twice
+    for (i=0;i<=vf.nfields.value;i++) {
+      if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
+        eval('vf.f'+i+'.selectedIndex=0;')
+      }
+    }
+  }
+ENDPICK
+}
+
+sub csvuploadmap_header {
+  my ($request,$symb,$url,$datatoken,$distotal)= @_;
+  my $result;
+  my $javascript;
+  if ($ENV{'form.upfile_associate'} eq 'reverse') {
+    $javascript=&csvupload_javascript_reverse_associate();
+  } else {
+    $javascript=&csvupload_javascript_forward_associate();
+  }
+  $request->print(<<ENDPICK);
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
+<h3>Uploading Class Grades for resource $url</h3>
+<hr>
+<h3>Identify fields</h3>
+Total number of records found in file: $distotal <hr />
+Enter as many fields as you can. The system will inform you and bring you back
+to this page if the data selected is insufficient to run your class.<hr />
+<input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
+<input type="hidden" name="associate"  value="" />
+<input type="hidden" name="phase"      value="three" />
+<input type="hidden" name="datatoken"  value="$datatoken" />
+<input type="hidden" name="fileupload" value="$ENV{'form.fileupload'}" />
+<input type="hidden" name="upfiletype" value="$ENV{'form.upfiletype'}" />
+<input type="hidden" name="upfile_associate" 
+                                       value="$ENV{'form.upfile_associate'}" />
+<input type="hidden" name="symb"       value="$symb" />
+<input type="hidden" name="url"        value="$url" />
+<input type="hidden" name="command"    value="csvuploadassign" />
+<hr />
+<script type="text/javascript" language="Javascript">
+$javascript
+</script>
+ENDPICK
+  return '';
+
+}
+
+sub csvupload_fields {
+  my ($url) = @_;
+  my (@parts) = &getpartlist($url);
+  my @fields=(['username','Student Username'],['domain','Student Domain']);
+  foreach my $part (sort(@parts)) {
+    my @datum;
+    my $display=&Apache::lonnet::metadata($url,$part.'.display');
+    my $name=$part;
+    if  (!$display) { $display = $name; }
+    @datum=($name,$display);
+    push(@fields,\@datum);
+  }
+  return (@fields);
+}
+
+sub csvuploadmap_footer {
+  my ($request,$i,$keyfields) =@_;
+  $request->print(<<ENDPICK);
+</table>
+<input type="hidden" name="nfields" value="$i" />
+<input type="hidden" name="keyfields" value="$keyfields" />
+<input type="button" onClick="javascript:verify(this.form)" value="Assign Grades" /><br />
+</form>
+ENDPICK
+}
+
+sub csvuploadmap {
+  my ($request)= @_;
+  my ($symb,$url)=&get_symb_and_url($request);
+  if (!$symb) {return '';}
+  my $datatoken;
+  if (!$ENV{'form.datatoken'}) {
+    $datatoken=&Apache::loncommon::upfile_store($request);
+  } else {
+    $datatoken=$ENV{'form.datatoken'};
+    &Apache::loncommon::load_tmp_file($request);
+  }
+  my @records=&Apache::loncommon::upfile_record_sep();
+  &csvuploadmap_header($request,$symb,$url,$datatoken,$#records+1);
+  my $i;
+  my $keyfields;
+  if (@records) {
+    my @fields=&csvupload_fields($url);
+    if ($ENV{'form.upfile_associate'} eq 'reverse') {	
+      &Apache::loncommon::csv_print_samples($request,\@records);
+      $i=&Apache::loncommon::csv_print_select_table($request,\@records,
+						    \@fields);
+      foreach (@fields) { $keyfields.=$_->[0].','; }
+      chop($keyfields);
+    } else {
+      unshift(@fields,['none','']);
+      $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
+						      \@fields);
+      my %sone=&Apache::loncommon::record_sep($records[0]);
+      $keyfields=join(',',sort(keys(%sone)));
+    }
+  }
+  &csvuploadmap_footer($request,$i,$keyfields);
+  return '';
+}
+
+sub csvuploadassign {
+  my ($request)= @_;
+  my ($symb,$url)=&get_symb_and_url($request);
+  if (!$symb) {return '';}
+  &Apache::loncommon::load_tmp_file($request);
+  my @gradedata=&Apache::loncommon::upfile_record_sep();
+  my @keyfields = split(/\,/,$ENV{'form.keyfields'});
+  my %fields=();
+  for (my $i=0; $i<=$ENV{'form.nfields'}; $i++) {
+    if ($ENV{'form.upfile_associate'} eq 'reverse') {
+      if ($ENV{'form.f'.$i} ne 'none') {
+	$fields{$keyfields[$i]}=$ENV{'form.f'.$i};
+      }
+    } else {
+      if ($ENV{'form.f'.$i} ne 'none') {
+	$fields{$ENV{'form.f'.$i}}=$keyfields[$i];
+      }
+    }
+  }
+  $request->print('<h3>Assigning Grades</h3>');
+  my $courseid=$ENV{'request.course.id'};
+#  my $cdom=$ENV{"course.$courseid.domain"};
+#  my $cnum=$ENV{"course.$courseid.num"};
+  my ($classlist) = &getclasslist('all','1');
+  my @skipped;
+  my $countdone=0;
+  foreach my $grade (@gradedata) {
+    my %entries=&Apache::loncommon::record_sep($grade);
+    my $username=$entries{$fields{'username'}};
+    my $domain=$entries{$fields{'domain'}};
+    if (!exists($$classlist{"$username:$domain"})) {
+      push(@skipped,"$username:$domain");
+      next;
+    }
+    my %grades;
+    foreach my $dest (keys(%fields)) {
+      if ($dest eq 'username' || $dest eq 'domain') { next; }
+      if ($entries{$fields{$dest}} eq '') { next; }
+      my $store_key=$dest;
+      $store_key=~s/^stores/resource/;
+      $store_key=~s/_/\./g;
+      $grades{$store_key}=$entries{$fields{$dest}};
+    }
+    $grades{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";
+    &Apache::lonnet::cstore(\%grades,$symb,$ENV{'request.course.id'},
+			    $domain,$username);
+    $request->print('.');
+    $request->rflush();
+    $countdone++;
+  }
+  $request->print("<br />Stored $countdone students\n");
+  if (@skipped) {
+    $request->print('<br /><font size="+1"><b>Skipped Students</b></font><br />');
+    foreach my $student (@skipped) { $request->print("<br />$student"); }
+  }
+  $request->print(&view_edit_entire_class_form($symb,$url));
+  $request->print(&show_grading_menu_form($symb,$url));
+  return '';
+}
+
 sub send_header {
   my ($request)= @_;
   $request->print(&Apache::lontexconvert::header());
@@ -332,8 +1224,6 @@ sub send_footer {
 sub handler {
   my $request=$_[0];
 
-  if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}
-  
   if ($ENV{'browser.mathml'}) {
     $request->content_type('text/xml');
   } else {
@@ -379,16 +1269,42 @@ sub handler {
          }
      }
   } else {
+    #&Apache::lonhomework::showhashsubset(\%ENV,'^form');
     $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
     if ($command eq 'submission') {
-      $request->print(&listStudents($request)) if ($ENV{'form.student'} eq '');
-      $request->print(&submission($request)) if ($ENV{'form.student'} ne '');
+      &listStudents($request) if ($ENV{'form.student'} eq '');
+      &submission($request,0,0) if ($ENV{'form.student'} ne '');
+    } elsif ($command eq 'processGroup') {
+      &processGroup($request);
+    } elsif ($command eq 'gradingmenu') {
+      $request->print(&gradingmenu($request));
     } elsif ($command eq 'viewgrades') {
       $request->print(&viewgrades($request));
+    } elsif ($command eq 'handgrade') {
+      $request->print(&processHandGrade($request));
     } elsif ($command eq 'editgrades') {
       $request->print(&editgrades($request));
+    } elsif ($command eq 'verify') {
+      $request->print(&verifyreceipt($request));
+    } elsif ($command eq 'csvupload') {
+      $request->print(&csvupload($request));
+    } elsif ($command eq 'csvuploadmap') {
+      $request->print(&csvuploadmap($request));
+#    } elsif ($command eq 'receiptInput') {
+#      &receiptInput($request);
+    } elsif ($command eq 'csvuploadassign') {
+      if ($ENV{'form.associate'} ne 'Reverse Association') {
+	$request->print(&csvuploadassign($request));
+      } else {
+	if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {
+	  $ENV{'form.upfile_associate'} = 'reverse';
+	} else {
+	  $ENV{'form.upfile_associate'} = 'forward';
+	}
+	$request->print(&csvuploadmap($request));
+      }
     } else {
-      $request->print("Unknown action:$command:");
+      $request->print("Unknown action: $command:");
     }
   }
   &send_footer($request);