--- loncom/interface/Attic/lonspreadsheet.pm	2002/11/05 15:00:27	1.133
+++ loncom/interface/Attic/lonspreadsheet.pm	2002/11/07 15:37:02	1.135
@@ -1,5 +1,5 @@
 #
-# $Id: lonspreadsheet.pm,v 1.133 2002/11/05 15:00:27 matthew Exp $
+# $Id: lonspreadsheet.pm,v 1.135 2002/11/07 15:37:02 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -62,6 +62,8 @@ use GDBM_File;
 use HTML::TokeParser;
 use Apache::lonhtmlcommon;
 use Apache::loncoursedata;
+use Apache::File();
+use Spreadsheet::WriteExcel;
 #
 # Caches for coursewide information 
 #
@@ -1107,9 +1109,8 @@ sub exportdata {
 
 # ========================================================== End of Spreadsheet
 # =============================================================================
-
 #
-# Procedures for screen output
+# Procedures for spreadsheet output
 #
 # --------------------------------------------- Produce output row n from sheet
 
@@ -1143,9 +1144,15 @@ sub sort_indicies {
     return @sortidx;
 }
 
-########################################################################
-########################################################################
-
+#############################################################
+###                                                       ###
+###              Spreadsheet Output Routines              ###
+###                                                       ###
+#############################################################
+
+############################################
+##         HTML output routines           ##
+############################################
 sub html_editable_cell {
     my ($cell,$bgcolor) = @_;
     my $result;
@@ -1177,9 +1184,6 @@ sub html_uneditable_cell {
     return ' '.$value.' ';
 }
 
-########################################################################
-########################################################################
-
 sub outsheet_html  {
     my ($sheet,$r) = @_;
     my ($num_uneditable,$realm,$row_type);
@@ -1349,6 +1353,9 @@ END
     return 1;
 }
 
+############################################
+##         csv output routines            ##
+############################################
 sub outsheet_csv   {
     my ($sheet,$r) = @_;
     my $csvdata = '';
@@ -1370,26 +1377,183 @@ sub outsheet_csv   {
         @Values = ();
     }
     #
-    $r->print('<pre>'.$csvdata."\n</pre>");
+    # Write the CSV data to a file and serve up a link
+    #
+    my $filename = '/prtspool/'.
+        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+        time.'_'.rand(1000000000).'.csv';
+    my $file;
+    unless ($file = 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.");
+        $r->print("<pre>\n".$csvdata."</pre>\n");
+        return 0;
+    }
+    print $file $csvdata;
+    close($file);
+    $r->print('<br /><br />'.
+              '<a href="'.$filename.'">Your CSV spreadsheet.</a>'."\n");
+    #
+    return 1;
+}
+
+############################################
+##        Excel output routines           ##
+############################################
+sub outsheet_recursive_excel {
+    my ($sheet,$r) = @_;
+    return undef if ($sheet->{'sheettype'} ne 'classcalc');
+    my ($workbook,$filename) = &create_excel_spreadsheet($sheet,$r);
+    return undef if (! defined($workbook));
+    #
+    # Create main worksheet
+    my $main_worksheet = $workbook->addworksheet('main');
+    #
+    # Figure out who the students are
+    my %f=&getformulas($sheet);
+    my $count = 0;
+    $r->print("<br />\n");
+    $r->rflush();
+    foreach (keys(%f)) {
+	next if ($_!~/^A(\d+)/ || $1 == 0 || ($f{$_}=~/^[!~-]/));
+        $count++;
+        my ($sname,$sdom) = split(':',$f{$_});
+        my $student_excel_worksheet=$workbook->addworksheet($sname.'@'.$sdom);
+        # Create a new spreadsheet
+        my $studentsheet = &makenewsheet($sname,$sdom,'studentcalc',undef);
+        # Read in the spreadsheet definition
+        &readsheet($studentsheet,'default_studentcalc');
+        # Determine the structure (contained assessments, etc) of the sheet
+        &updatesheet($studentsheet);
+        # Load in the (possibly cached) data from the assessment sheets        
+        &loadrows($studentsheet);
+        # Compute the sheet
+        &calcsheet($studentsheet);
+        &Apache::lonnet::logthis("Sheet value for A0 = ".$sheet->{'values'}->{'A0'});
+        # Stuff the sheet into excel
+        &export_sheet_as_excel($studentsheet,$student_excel_worksheet);
+        if ($count % 5 == 0) {
+            $r->print($count.' students completed<br />');
+            $r->rflush();
+        }
+    }
+    #
+    $r->print('All students spreadsheets completed<br />');
+    $r->rflush();
+    #
+    # &export_sheet_as_excel fills $worksheet with the data from $sheet
+    &export_sheet_as_excel($sheet,$main_worksheet);
     #
+    $workbook->close();
+    # Okay, the spreadsheet is taken care of, so give the user a link.
+    $r->print('<br /><br />'.
+              '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
     return 1;
 }
 
 sub outsheet_excel {
     my ($sheet,$r) = @_;
+    my ($workbook,$filename) = &create_excel_spreadsheet($sheet,$r);
+    return undef if (! defined($workbook));
+    my $sheetname;
+    if ($sheet->{'sheettype'} eq 'classcalc') {
+        $sheetname = 'Main';
+    } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
+        $sheetname = $sheet->{'uname'}.'@'.$sheet->{'udom'};
+    } elsif ($sheet->{'sheettype'} eq 'assesscalc') {
+        $sheetname = $sheet->{'uname'}.'@'.$sheet->{'udom'}.' assessment';
+    }
+    my $worksheet = $workbook->addworksheet($sheetname);
+    #
+    # &export_sheet_as_excel fills $worksheet with the data from $sheet
+    &export_sheet_as_excel($sheet,$worksheet);
+    #
+    $workbook->close();
+    # Okay, the spreadsheet is taken care of, so give the user a link.
+    $r->print('<br /><br />'.
+              '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
+    return 1;
+}
+
+sub create_excel_spreadsheet {
+    my ($sheet,$r) = @_;
+    my $filename = '/prtspool/'.
+        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+        time.'_'.rand(1000000000).'.xls';
+    #&Apache::lonnet::logthis("spreadsheet:filename = ".$filename);
+    my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
+    if (! defined($workbook)) {
+        $r->log_error("Error creating excel spreadsheet $filename: $!");
+        $r->print("Problems creating new Excel file.  ".
+                  "This error has been logged.  ".
+                  "Please alert your LON-CAPA administrator");
+        return undef;
+    }
+    #
+    # The spreadsheet stores temporary data in files, then put them
+    # together.  If needed we should be able to disable this (memory only).
+    # The temporary directory must be specified before calling 'addworksheet'.
+    # File::Temp is used to determine the temporary directory.
+    $workbook->set_tempdir('/home/httpd/perl/tmp');
+    #
+    # Determine the name to give the worksheet
+    return ($workbook,$filename);
 }
 
+sub export_sheet_as_excel {
+    my $sheet = shift;
+    my $worksheet = shift;
+    ####################################
+    # Prepare to output rows
+    ####################################
+    my @Rows = &sort_indicies($sheet);
+    #
+    # Loop through the rows and output them one at a time
+    my $rows_output=0;
+    foreach my $rownum (@Rows) {
+        my ($rowlabel,@rowdata) = &get_row($sheet,$rownum);
+        my $cols_output = 0;
+        my $label = &format_excel_rowlabel($rowlabel);
+        $worksheet->write($rows_output,$cols_output++,$label);
+        if (ref($label)) {
+            $cols_output = (scalar(@$label));
+        }
+        foreach my $cell (@rowdata) {
+            $worksheet->write($rows_output,$cols_output++,
+                              $cell->{'value'});
+        }
+        $rows_output++;
+    }
+    return;
+}
+
+############################################
+##          XML output routines           ##
+############################################
 sub outsheet_xml   {
     my ($sheet,$r) = @_;
+    ## Someday XML
+    ## Will be rendered for the user
+    ## But not on this day
 }
 
+##
+## Outsheet - calls other outsheet_* functions
+##
 sub outsheet {
     my ($r,$sheet)=@_;
-    if (exists($ENV{'form.showcsv'})) {
+    if (! exists($ENV{'form.output'})) {
+        $ENV{'form.output'} = 'HTML';
+    }
+    if (lc($ENV{'form.output'}) eq 'csv') {
         &outsheet_csv($sheet,$r);
-#    } elsif (exists($ENV{'form.excel'})) {
-#        &outsheet_excel($sheet,$r);
-#    } elsif (exists($ENV{'form.xml'})) {
+    } elsif (lc($ENV{'form.output'}) eq 'excel') {
+        &outsheet_excel($sheet,$r);
+    } elsif (lc($ENV{'form.output'}) eq 'recursive excel') {
+        &outsheet_recursive_excel($sheet,$r);
+#    } elsif (lc($ENV{'form.output'}) eq 'xml' ) {
 #        &outsheet_xml($sheet,$r);
     } else {
         &outsheet_html($sheet,$r);
@@ -1533,6 +1697,8 @@ sub makenewsheet {
     $sheet->{'cnum'}  = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
     $sheet->{'cdom'}  = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
     $sheet->{'chome'} = $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+    $sheet->{'coursedesc'} = $ENV{'course.'.$ENV{'request.course.id'}.
+                                      'description'};
     $sheet->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
     #
     #
@@ -1776,7 +1942,7 @@ sub format_csv_rowlabel {
     return '"'.$result.'"';
 }
 
-sub format_plain_rowlabel {
+sub format_excel_rowlabel {
     my $rowlabel = shift;
     return '' if ($rowlabel eq '');
     my ($type,$labeldata) = split(':',$rowlabel,2);
@@ -1787,8 +1953,10 @@ sub format_plain_rowlabel {
         $result = $title;
     } elsif ($type eq 'student') {
         my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
-            $result = '"'.
-                join('","',($sname,$sdom,$fullname,$section,$id).'"');
+        $section = '' if (! defined($section));
+        $id      = '' if (! defined($id));
+        my @Data = ($sname,$sdom,$fullname,$section,$id);
+        $result = \@Data;
     } elsif ($type eq 'parameter') {
         $labeldata =~ s/<br>/ /g;
         $result = $labeldata;
@@ -1992,7 +2160,7 @@ sub updatestudentassesssheet {
 
 # ------------------------------------------------ Load data for one assessment
 
-sub loadstudent {
+sub loadstudent{
     my ($sheet)=@_;
     my %c=();
     my %f=&getformulas($sheet);
@@ -2044,8 +2212,10 @@ sub loadstudent {
 #
 sub loadcourse {
     my ($sheet,$r)=@_;
+    #
     my %c=();
     my %f=&getformulas($sheet);
+    #
     my $total=0;
     foreach (keys(%f)) {
 	if ($_=~/^A(\d+)/) {
@@ -2368,7 +2538,7 @@ sub exportsheet {
     }
     #
     # Not cached
-    #        
+    #
     my ($newsheet)=&makenewsheet($uname,$udom,$stype,$usymb);
     &readsheet($newsheet,$fn);
     &updatesheet($newsheet);
@@ -2497,9 +2667,16 @@ sub cachedssheets {
 sub handler {
     my $r=shift;
 
+    my ($sheettype) = ($r->uri=~/\/(\w+)$/);
+
     if (! exists($ENV{'form.Status'})) {
         $ENV{'form.Status'} = 'Active';
     }
+    if ( ! exists($ENV{'form.output'}) || 
+             ($sheettype ne 'classcalc' && 
+              lc($ENV{'form.output'}) eq 'recursive excel')) {
+        $ENV{'form.output'} = 'HTML';
+    }
     # Check this server
     my $loaderror=&Apache::lonnet::overloaderror($r);
     if ($loaderror) { return $loaderror; }
@@ -2603,8 +2780,7 @@ ENDSCRIPT
         undef %updatedata;
     }
     # Read new sheet or modified worksheet
-    $r->uri=~/\/(\w+)$/;
-    my ($sheet)=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
+    my ($sheet)=&makenewsheet($aname,$adom,$sheettype,$ENV{'form.usymb'});
     #
     # If a new formula had been entered, go from work copy
     if ($ENV{'form.unewfield'}) {
@@ -2753,10 +2929,24 @@ ENDSCRIPT
     $r->print('>');
     #
     # CSV format checkbox (classcalc sheets only)
-    $r->print(' Output CSV format: <input type="checkbox" '.
-              'name="showcsv" onClick="submit()"');
-    $r->print(' checked') if ($ENV{'form.showcsv'});
-    $r->print('>');
+    $r->print(' Output as <select name="output" size="1" onClick="submit()">'.
+              "\n");
+    foreach my $mode (qw/HTML CSV Excel/) {
+        $r->print('<option value="'.$mode.'"');
+        if ($ENV{'form.output'} eq $mode) {
+            $r->print(' selected ');
+        } 
+        $r->print('>'.$mode.'</option>'."\n");
+    }
+    if ($sheet->{'sheettype'} eq 'classcalc') {
+        $r->print('<option value="recursive excel"');
+        if ($ENV{'form.output'} eq 'recursive excel') {
+            $r->print(' selected ');
+        } 
+        $r->print(">Multi-Sheet Excel</option>\n");
+    }
+    $r->print("</select>\n");
+    #
     if ($sheet->{'sheettype'} eq 'classcalc') {
         $r->print('&nbsp;Student Status: '.
                   &Apache::lonhtmlcommon::StatusOptions
@@ -2764,13 +2954,13 @@ ENDSCRIPT
     }
     #
     # Buttons to insert rows
-    $r->print(<<ENDINSERTBUTTONS);
-<br>
-<input type='button' onClick='insertrow("top");' 
-value='Insert Row Top'>
-<input type='button' onClick='insertrow("bottom");' 
-value='Insert Row Bottom'><br>
-ENDINSERTBUTTONS
+#    $r->print(<<ENDINSERTBUTTONS);
+#<br>
+#<input type='button' onClick='insertrow("top");' 
+#value='Insert Row Top'>
+#<input type='button' onClick='insertrow("bottom");' 
+#value='Insert Row Bottom'><br>
+#ENDINSERTBUTTONS
     # Print out sheet
     &outsheet($r,$sheet);
     $r->print('</form></body></html>');