--- loncom/homework/grades.pm	2004/05/14 19:15:49	1.200
+++ loncom/homework/grades.pm	2004/05/25 05:27:09	1.203
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.200 2004/05/14 19:15:49 albertel Exp $
+# $Id: grades.pm,v 1.203 2004/05/25 05:27:09 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3420,18 +3420,25 @@ sub getSequenceDropDown {
     return $result;
 }
 
-sub scantron_uploads {
-    if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
-    my $result=	'<select name="scantron_selectfile">';
+sub scantron_filenames {
     my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
     my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
     my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
 				    &Apache::loncommon::propath($cdom,$cname));
-    $result.="<option></option>";
-    foreach my $filename (@files) {
+    my @possiblenames;
+    foreach my $filename (sort(@files)) {
 	($filename)=split(/&/,$filename);
 	if ($filename!~/^scantron_orig_/) { next ; }
 	$filename=~s/^scantron_orig_//;
+	push(@possiblenames,$filename);
+    }
+    return @possiblenames;
+}
+
+sub scantron_uploads {
+    my $result=	'<select name="scantron_selectfile">';
+    $result.="<option></option>";
+    foreach my $filename (sort(&scantron_filenames())) {
 	$result.="<option>$filename</option>\n";
     }
     $result.="</select>";
@@ -3457,7 +3464,7 @@ sub scantron_CODElist {
     my $cnum = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
     my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
     my $namechoice='<option></option>';
-    foreach my $name (@names) {
+    foreach my $name (sort(@names)) {
 	if ($name =~ /^error: 2 /) { next; }
 	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
     }
@@ -3496,7 +3503,7 @@ sub scantron_selectphase {
     <tr>
       <td bgcolor="#777777">
        <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
-       <input type="hidden" name="command" value="scantron_validate" />
+       <input type="hidden" name="command" value="scantron_warning" />
         $default_form_data
         <table width="100%" border="0">
           <tr bgcolor="#e6ffff">
@@ -3602,18 +3609,8 @@ SCANTRONFORM
               <td> Filename of scoring office file: </td><td> $file_selector </td>
             </tr>
             <tr bgcolor="#ffffe6">
-	      <td>
-                Records to download
-              </td>
-              <td>
-                  <input type="radio" name="scantron_options" value="download_skipped"/> Skipped Records <br />
-                  <input type="radio" name="scantron_options" value="download_corrected"/> Corrected Records <br />
-                  <input checked="on" type="radio" name="scantron_options" value="dowload_orig"/> Original Records
-              </td>
-            </tr>
-            <tr bgcolor="#ffffe6">
               <td colspan="2">
-                <input type="submit" value="Validate Scantron Records" />
+                <input type="submit" value="Show List of Files" />
               </td>
             </tr>
           </table>
@@ -3928,6 +3925,60 @@ sub check_for_error {
     }
 }
 
+sub scantron_warning_screen {
+    my ($button_text)=@_;
+    my $title=&Apache::lonnet::gettitle($ENV{'form.selectpage'});
+    return (<<STUFF);
+<p>
+<font color="red">Please double check the information
+                 below before clicking on '$button_text'</font>
+</p>
+<table>
+<tr><td><b>Sequence To be Graded:</b></td><td>$title</td></tr>
+<tr><td><b>Data File that will be used:</b></td><td><tt>$ENV{'form.scantron_selectfile'}</tt></td></tr>
+</table>
+</font>
+<br />
+<p> If this information is correct, please click on '$button_text'.</p>
+<p> If something is incorrect, please click the 'Grading Menu' button to start over.</p>
+
+<br />
+STUFF
+}
+
+sub scantron_do_warning {
+    my ($r)=@_;
+    my ($symb,$url)=&get_symb_and_url($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb,$url);
+    $r->print(&scantron_form_start().$default_form_data);
+    my $warning=&scantron_warning_screen('Validate Records');
+    $r->print(<<STUFF);
+$warning
+<input type="submit" name="submit" value="Validate Records" />
+<input type="hidden" name="command" value="scantron_validate" />
+</form>
+STUFF
+    $r->print("<br />".&show_grading_menu_form($symb,$url)."</body></html>");
+    return '';
+}
+
+sub scantron_form_start {
+    my ($max_bubble)=@_;
+    my $result= <<SCANTRONFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
+  <input type="hidden" name="selectpage" value="$ENV{'form.selectpage'}" />
+  <input type="hidden" name="scantron_format" value="$ENV{'form.scantron_format'}" />
+  <input type="hidden" name="scantron_selectfile" value="$ENV{'form.scantron_selectfile'}" />
+  <input type="hidden" name="scantron_maxbubble" value="$max_bubble'" />
+  <input type="hidden" name="scantron_CODElist" value="$ENV{'form.scantron_CODElist'}" />
+  <input type="hidden" name="scantron_CODEunique" value="$ENV{'form.scantron_CODEunique'}" />
+  <input type="hidden" name="scantron_options_redo" value="$ENV{'form.scantron_options_redo'}" />
+  <input type="hidden" name="scantron_options_ignore" value="$ENV{'form.scantron_options_ignore'}" />
+SCANTRONFORM
+    return $result;
+}
+
 sub scantron_validate_file {
     my ($r) = @_;
     my ($symb,$url)=&get_symb_and_url($r);
@@ -3956,21 +4007,10 @@ sub scantron_validate_file {
 	&scantron_process_corrections($r);
     }
     $r->print("<p>Gathering neccessary info.</p>");$r->rflush();
-    my $max_bubble=&scantron_get_maxbubble($r);
     #get the student pick code ready
     $r->print(&Apache::loncommon::studentbrowser_javascript());
-    my $result= <<SCANTRONFORM;
-<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
-  <input type="hidden" name="selectpage" value="$ENV{'form.selectpage'}" />
-  <input type="hidden" name="scantron_format" value="$ENV{'form.scantron_format'}" />
-  <input type="hidden" name="scantron_selectfile" value="$ENV{'form.scantron_selectfile'}" />
-  <input type="hidden" name="scantron_maxbubble" value="$max_bubble'" />
-  <input type="hidden" name="scantron_CODElist" value="$ENV{'form.scantron_CODElist'}" />
-  <input type="hidden" name="scantron_CODEunique" value="$ENV{'form.scantron_CODEunique'}" />
-  <input type="hidden" name="scantron_options_redo" value="$ENV{'form.scantron_options_redo'}" />
-  <input type="hidden" name="scantron_options_ignore" value="$ENV{'form.scantron_options_ignore'}" />
-  $default_form_data
-SCANTRONFORM
+    my $max_bubble=&scantron_get_maxbubble($r);
+    my $result=&scantron_form_start($max_bubble).$default_form_data;
     $r->print($result);
     
     my @validate_phases=( 'ID',
@@ -3993,9 +4033,14 @@ SCANTRONFORM
 	}
     }
     if (!$stop) {
-	$r->print("Validation process complete.<br />");
-	$r->print('<input type="submit" name="submit" value="Start Grading" />');
-	$r->print('<input type="hidden" name="command" value="scantron_process" />');
+	my $warning=&scantron_warning_screen('Start Grading');
+	$r->print(<<STUFF);
+Validation process complete.<br />
+$warning
+<input type="submit" name="submit" value="Start Grading" />
+<input type="hidden" name="command" value="scantron_process" />
+STUFF
+
     } else {
 	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
 	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
@@ -4673,6 +4718,50 @@ sub scantron_upload_scantron_data_save {
     return '';
 }
 
+sub valid_file {
+    my ($requested_file)=@_;
+    foreach my $filename (sort(&scantron_filenames())) {
+	&Apache::lonnet::logthis("$requested_file  $filename");
+	if ($requested_file eq $filename) { return 1; }
+    }
+    return 0;
+}
+
+sub scantron_download_scantron_data {
+    my ($r)=@_;
+    my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $file=$ENV{'form.scantron_selectfile'};
+    if (! &valid_file($file)) {
+	$r->print(<<ERROR);
+	<p>
+	    The requested file name was invalid.
+        </p>
+ERROR
+	$r->print(&show_grading_menu_form(&get_symb_and_url($r,1)));
+	return;
+    }
+    my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
+    my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
+    my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
+    &Apache::lonnet::allowuploaded('/adm/grades',$orig);
+    &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
+    &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
+    $r->print(<<DOWNLOAD);
+    <p>
+	<a href="$orig">Original</a> file as uploaded by the scantron office.
+    </p>
+    <p>
+	<a href="$corrected">Corrections</a>, a file of corrected records that were used in grading.
+    </p>
+    <p>
+	<a href="$skipped">Skipped</a>, a file of records that were skipped.
+    </p>
+DOWNLOAD
+    $r->print(&show_grading_menu_form(&get_symb_and_url($r,1)));
+    return '';
+}
 
 #-------- end of section for handling grading scantron forms -------
 #
@@ -4950,8 +5039,8 @@ sub handler {
 	    }
 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
 	    $request->print(&scantron_selectphase($request));
- 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
- 	    $request->print(&scantron_validate_file($request));
+ 	} elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
+ 	    $request->print(&scantron_do_warning($request));
 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
 	    $request->print(&scantron_validate_file($request));
 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
@@ -4964,7 +5053,7 @@ sub handler {
  		 (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})||
 		  &Apache::lonnet::allowed('usc',$ENV{'request.course.id'}))) {
  	    $request->print(&scantron_upload_scantron_data_save($request));
- 	} elsif ($command eq 'scantrondownload' &&
+ 	} elsif ($command eq 'scantron_download' &&
 		 &Apache::lonnet::allowed('usc',$ENV{'request.course.id'})) {
  	    $request->print(&scantron_download_scantron_data($request));
 	} elsif ($command) {