--- loncom/interface/multidownload.pl	2007/03/30 22:57:39	1.1
+++ loncom/interface/multidownload.pl	2007/05/21 22:00:29	1.27
@@ -2,7 +2,7 @@
 # CGI-script to allow download of all essay submissions of 
 # multiple students.
 #
-# $Id: multidownload.pl,v 1.1 2007/03/30 22:57:39 banghart Exp $
+# $Id: multidownload.pl,v 1.27 2007/05/21 22:00:29 banghart Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -33,18 +33,43 @@ use File::Path;
 use File::Basename;
 use File::Copy;
 use IO::File;
-use Image::Magick;
 use Apache::lonhtmlcommon();
+use Apache::lonnavmaps;
 use Apache::lonnet;
-use Apache::grades;
 use Apache::loncommon();
 use Apache::lonlocal;
 use Apache::lonmsg();
+use Apache::lonnet;
 use LONCAPA::Enrollment;
-
 use strict;
 
-
+sub is_flat {
+    my ($partlist, $res) = @_;
+    my $flat_part = 1;
+    my $flat_resp = 1;
+    if (scalar(@$partlist) > 1) {
+        $flat_part = 0;
+    }
+    foreach my $partid (@$partlist) {
+        my @ids = $res->responseIds($partid);
+        if (scalar(@ids) > 1 ) {
+            $flat_resp = 0;
+        }
+    }
+    return ($flat_part, $flat_resp);
+}
+sub get_part_resp_path {
+    my ($flat_part, $flat_resp, $part_id, $resp_id) = @_;
+    my $part_resp_path = "";
+    if (!$flat_part) {
+        $part_resp_path = "part$part_id/";
+    } 
+    if (!$flat_resp) {
+        $part_resp_path .= "resp$resp_id/";
+    }
+    $part_resp_path =~ s/\/^//; 
+    return('/'.$part_resp_path);
+}
 $|=1;
 if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
     print <<END;
@@ -62,28 +87,99 @@ END
 &Apache::lonlocal::get_language_handle();
 &Apache::loncommon::content_type(undef,'text/html');
 my $identifier = $ENV{'QUERY_STRING'};
+my $unique_path = $identifier.time();
 print(&Apache::loncommon::start_page('Multiple Downloads'));
-my $symb = $env{'cgi.'.$identifier.'.symb'};
-my $courseid = $env{'cgi.'.$identifier.'.courseid'};
-my @stuchecked = split /\n/,$env{'cgi.'.$identifier.'.students'};
-my @parts = split /\n/,$env{'cgi.'.$identifier.'.parts'};
-my ($partlist,$handgrade,$responseType) = &Apache::grades::response_type($symb);
-my @part_response_id = &Apache::grades::flatten_responseType($responseType);
-print "number of parts is: ".@parts."<br />";
-my ($partlist,$handgrade,$responseType) = &Apache::grades::response_type($symb);
-print "in the CGI script <br />";
-foreach (@stuchecked) {
-    my ($uname,$udom,$fullname) = split(/:/);
-    my %record = &Apache::lonnet::restore($symb,$courseid,$udom,$uname);
-    print $uname."<br />";
-    foreach my $part(@part_response_id) {
-        print $part."<br />";
-        my ($partid,$respid) = @{ $part };
-        my $files = &Apache::grades::get_submitted_files($udom,$uname,$partid,$respid,\%record);
-        foreach my $file(@$files) {
-            print $file."<br />";
+    
+
+my $scope = $env{'request.course.id'};
+if ($env{'request.course.sec'}) {
+    $scope .= '/'.$env{'request.course.sec'};
+}
+if (&Apache::lonnet::allowed('vgr',$scope) eq 'F') {
+    my $symb = $env{'cgi.'.$identifier.'.symb'};
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my $res = $navmap->getBySymb($symb);
+    my $partlist = $res->parts();
+    my ($flat_part, $flat_resp) = &is_flat($partlist, $res);
+    my ($zipout) = ($symb =~ /^.*\/(.+)\.problem$/);
+    $zipout =~ s/\s/_/g;
+    $zipout .= "$identifier.zip";
+    my $courseid = $env{'request.course.id'};
+    my @stuchecked = split(/\n/,$env{'cgi.'.$identifier.'.students'});
+    my $number_of_students = scalar(@stuchecked);
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Processing Status',
+                                                    'Preparing Zip File',$number_of_students,'inline','80');
+    my @parts = split(/\n/,$env{'cgi.'.$identifier.'.parts'});
+    my $doc_zip_root = $Apache::lonnet::perlvar{'lonZipDir'};
+    my $uname = $env{'user.name'};
+    my $udom = $env{'user.domain'};
+    my $unique_user = $uname.":".$udom;
+    &mkpath($doc_zip_root."/zipdir/$unique_user/$unique_path",0,0700);
+    if (!open(MANIFEST, ">$doc_zip_root/zipdir/$unique_user/$unique_path/manifest.txt")) {
+        &Apache::lonnet::logthis("Problem making manifest");
+    }
+    print MANIFEST &mt("Files contained in this zip:\n");
+    my $file_problem = 0;
+    my $current_student = 0;
+    foreach my $stu (@stuchecked) {
+        $current_student ++;
+        &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,"Processing student $current_student of $number_of_students");
+        my %files_saved;
+        my ($stuname,$studom,$fullname) = split(/:/,$stu);
+        my %record = &Apache::lonnet::restore($symb,$courseid,$studom,$stuname);
+        my $file_url = '/uploaded/'.$studom.'/'.$stuname.'/portfolio';
+        print MANIFEST $fullname."\n";
+         
+        foreach my $partid (@$partlist) {
+            my @ids = $res->responseIds($partid);
+            foreach my $respid(@ids) {
+                my $part_resp_path = &get_part_resp_path($flat_part,$flat_resp, $partid, $respid);
+                &mkpath($doc_zip_root."/zipdir/$unique_user/$unique_path/$stuname/$part_resp_path",0,0700);
+                foreach my $file (split(',',$record{"resource.$partid.$respid.portfiles"})) {
+                    $file = $file_url.$file;
+                    my ($file_name_only) = ($file =~ /^.*\/(.+$)/);
+                    print MANIFEST "\t$file_name_only \n";
+                    &Apache::lonnet::repcopy($file);
+                    my $source = &Apache::lonnet::filelocation("",$file);
+                    
+                    my $destination = "$doc_zip_root/zipdir/$unique_user/$unique_path/$stuname$part_resp_path/$file_name_only";
+                    if (exists($files_saved{$destination})) {
+                        # file has already been saved once
+                        my ($file_name,$file_ext) = ($destination =~ /(^.*)(\..+$)/);
+                        $destination = $file_name.$files_saved{$destination}.$file_ext;
+                        $files_saved{$destination} ++;
+                    }
+                    $files_saved{$destination}++;
+                    if (!&copy($source,$destination)) {
+                        if (!$file_problem) {
+                            print &mt("Unable to create: <br />");
+                            $file_problem = 1;
+                        }
+                        print ("$stuname/part$partid/resp$respid/$file_name_only <br />");
+                    }
+                }
+            }
         }
     }
+    
+    &mkpath($doc_zip_root."/zipout/$unique_user",0,0700);
+    my $statement;
+    if (! -e "$doc_zip_root/zipout/$unique_user/$zipout") {
+        $statement = "cd $doc_zip_root/zipdir/$unique_user/$unique_path\n";
+        $statement .= "zip -r $doc_zip_root/zipout/$unique_user/$zipout * > /dev/null";
+        system($statement);
+    } else {
+        # should happen only if user reloads page 
+        &Apache::lonnet::logthis("$zipout is already there");
+    }
+    $statement = "rm -rf $doc_zip_root/zipdir/$unique_user/$unique_path";
+    system($statement);
+    &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
+    print('<p><a href="/zipspool/zipout/'.$unique_user.'/'.$zipout.'">'.
+            &mt("Click to download").'</a></p><br />');
+    close MANIFEST;
+} else {
+    print(&mt('You are not authorized to download student submissions.'));
 }
-
-die;
+1;
+__END__;