--- loncom/interface/statistics/lonstudentassessment.pm	2003/03/06 21:12:54	1.36
+++ loncom/interface/statistics/lonstudentassessment.pm	2003/03/06 22:45:04	1.37
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstudentassessment.pm,v 1.36 2003/03/06 21:12:54 matthew Exp $
+# $Id: lonstudentassessment.pm,v 1.37 2003/03/06 22:45:04 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -851,18 +851,137 @@ sub excel_finish {
 #######################################################
 {
 
+my $outputfile;
+my $filename;
+
+my %prog_state; # progress window state
+
 sub csv_initialize{
     my ($r) = @_;
-    $r->print("<h1>Not implemented yet</h1>");
+    # 
+    # Clean up
+    $filename = undef;
+    $outputfile = undef;
+    undef(%prog_state);
+    #
+    # Open a file
+    $filename = '/prtspool/'.
+        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+            time.'_'.rand(1000000000).'.csv';
+    unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
+        $r->log_error("Couldn't open $filename for output $!");
+        $r->print("Problems occured in writing the csv file.  ".
+                  "This error has been logged.  ".
+                  "Please alert your LON-CAPA administrator.");
+        $outputfile = undef;
+    }
+    #
+    # Print out the headings
+    my $Str = '';
+    my $Str2 = undef;
+    foreach my $field (&get_student_fields_to_show()) {
+        if ($show eq 'scores') {
+            $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
+        } elsif ($show eq 'totals') {
+            $Str .= '"",'; # first row empty on the student fields
+            $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
+        } elsif ($show eq 'all') {
+            $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
+        }
+    }
+    foreach my $seq (&get_sequences_to_show) {
+        if ($show eq 'scores') {
+            $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
+                '",';
+        } elsif ($show eq 'totals') {
+            $Str  .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
+                '","",';
+            $Str2 .= '"score","total possible",';
+        } elsif ($show eq 'all') {
+            $Str  .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
+                '",';
+            $Str .= '"",'x($seq->{'num_assess_parts'}-1);
+            $Str .= '"score","total possible",';
+        }
+    }
+    chop($Str);
+    $Str .= "\n";
+    print $outputfile $Str;
+    if (defined($Str2)) {
+        chop($Str2);
+        $Str2 .= "\n";
+        print $outputfile $Str2;
+    }
+    #
+    # Initialize progress window
+    my $studentcount = scalar(@Apache::lonstatistics::Students);
+    %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+        ($r,'CSV File Compilation Status',
+         'CSV File Compilation Progress', $studentcount);
     return;
 }
 
 sub csv_outputstudent {
     my ($r,$student) = @_;
+    return if (! defined($outputfile));
+    my $Str = '';
+    #
+    # Output student fields
+    my @to_show = &get_student_fields_to_show();
+    foreach my $field (@to_show) {
+        $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
+    }
+    #
+    # Get student assessment data
+    my %StudentsData;
+    my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
+                                                        $student->{'domain'},
+                                                        undef,
+                                                   $ENV{'request.course.id'});
+    if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
+        %StudentsData = @tmp;
+    }
+    #
+    # Output performance data
+    foreach my $seq (&get_sequences_to_show) {
+        my ($performance,$score,$seq_max) =
+            &StudentPerformanceOnSequence($student,\%StudentsData,
+                                          $seq,'no');
+        if ($show eq 'scores') {
+            $Str .= '"'.$score.'",';
+        } elsif ($show eq 'totals') {
+            $Str  .= '"'.$score.'","'.$seq_max.'",';
+        } elsif ($show eq 'all') {
+            $Str .= '"'.join('","',(split(//,$performance),$score,$seq_max)).
+                '",';
+        }
+    }
+    chop($Str);
+    $Str .= "\n";
+    print $outputfile $Str;
+    #
+    # Update the progress window
+    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
+    return;
 }
 
 sub csv_finish {
     my ($r) = @_;
+    return if (! defined($outputfile));
+    close($outputfile);
+    #
+    my $c = $r->connection();
+    return if ($c->aborted());
+    #
+    # Close the progress window
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    #
+    # Tell the user where to get their csv file
+    $r->print('<br />'.
+              '<a href="'.$filename.'">Your csv file.</a>'."\n");
+    $r->rflush();
+    return;
+    
 }
 
 }