# The LearningOnline Network
# Personal Information Page
#
# $Id: lonaboutme.pm,v 1.119 2009/03/27 15:46:38 bisitz 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/
#

=pod

=head1 NAME

pache::lonaboutme

=head1 SYNOPSIS

(empty)

This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.

=head1 OVERVIEW

(empty)


=head1 SUBROUTINES

=over

=item handler()

=item in_course()

=item aboutme_info()

=item print_portfiles_link()

=item build_query_string()

=item display_portfolio_header()

=item display_portfolio_files()

=item portfolio_files()

=item build_hierarchy()

=item parse_directory()

=back

=cut


package Apache::lonaboutme;

use strict;
use Apache::Constants qw(:common);
use Apache::loncommon;
use Apache::lonnet;
use Apache::lontexconvert;
use Apache::lonfeedback;
use Apache::lonrss();
use Apache::lonlocal;
use Apache::lonmsgdisplay();
use Apache::lontemplate;
use HTML::Entities();
use Image::Magick;

sub handler {
    my $r = shift;
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    return OK if $r->header_only;
    my $target=$env{'form.grade_target'};
# ------------------------------------------------------------ Print the screen
    if ($target eq 'tex') {
	$r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
    }
    my (undef,undef,$cdom,$cnum,undef,$action)=split(/\//,$r->uri);
    my $is_course;
# Is this even a user?
    if (&Apache::lonnet::homeserver($cnum,$cdom) eq 'no_host') {
	&Apache::loncommon::simple_error_page($r,'No info',
					      'No user information available');
        return OK;
    } else {
        $is_course = &Apache::lonnet::is_course($cdom,$cnum);
    }

    my $candisplay = 1;
    if (!$is_course) {
        if ($action ne 'portfolio') {
            $candisplay = &Apache::lonnet::usertools_access($cnum,$cdom,'aboutme');
            if ((!$candisplay) && ($env{'request.course.id'})) {
                $candisplay = &aboutme_access($cnum,$cdom);
            }
            if (!$candisplay) {
                if ($target eq 'tex') {
                    $r->print('\noindent{\large\textbf{'.&mt('No user personal information page available').'}}\\\\\\\\');
                } else {
                    $r->print(&Apache::loncommon::start_page("Personal Information Page"));
                    $r->print('<h2>'.&mt('No user personal information page available') .'</h2>'.
                              &mt('This is a result of one of the following:').'<ul>'.
                              '<li>'.&mt('The administrator of this domain has disabled personal information page functionality for this specific user.').'</li>'.
                              '<li>'.&mt('The domain has been configured to disable, by default, personal information page functionality for all users in the domain.').'</li>'.
                              '</ul>');
                    $r->print(&Apache::loncommon::end_page());
                }
                return OK;
            }
        }
    }

# --------------------------------------------------------- The syllabus fields
    my %syllabusfields=&Apache::lonlocal::texthash(
       'aaa_contactinfo'   => 'Contact Information',
       'bbb_aboutme'       => 'Personal Information',
       'ccc_webreferences' => 'Web References');

# ------------------------------------------------------------ Get Query String
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
					    ['forceedit','forcestudent',
					     'register','popup']);

# ----------------------------------------------- Available Portfolio file display 
    if (($target ne 'tex') && ($action eq 'portfolio')) {
        &display_portfolio_header($r,$is_course);
        if ((!$is_course) && (!&Apache::lonnet::usertools_access($cnum,$cdom,'portfolio'))) {
            $r->print('<h2>'.&mt('No user portfolio available') .'</h2>'.
                      &mt('This is a result of one of the following:').'<ul>'.
                      '<li>'.&mt('The administrator of this domain has disabled portfolio functionality for this specific user.').'</li>'.
                      '<li>'.&mt('The domain has been configured to disable, by default, portfolio functionality for all users in the domain.').'</li>'.
                      '</ul>');
        } else {
            my ($blocked,$blocktext) = 
                &Apache::loncommon::blocking_status('port',$cnum,$cdom);
            if (!$blocked) {
                &display_portfolio_files($r,$is_course);
            } else {
                $r->print($blocktext);
            }
        }
        $r->print(&Apache::loncommon::end_page());
        return OK;
    }

    if ($is_course) {
        if ($target ne 'tex') {
	    my $brcrum = [{href=>"/adm/navmaps",text=>"Navigate Course Contents"},
			  {href=>"/adm/aboutme",text=>"Course Information"}];
            my $start_page =
                &Apache::loncommon::start_page(
                    "Course Information",
                     undef,
                     {'function' => $env{'forcestudent'},
                      'domain'   => $cdom,
                      'force_register' => $env{'forceregister'},
                      'bread_crumbs' => $brcrum});
            $r->print($start_page);
            $r->print('<h2>'.&mt('Group Portfolio').'</h2>');
            &print_portfiles_link($r,$is_course);
            $r->print(&Apache::loncommon::end_page());
        }
        return OK;
    }

# --------------------------------------------------------------- Force Student
    my $forcestudent='';
    if ($env{'form.forcestudent'}) { $forcestudent='student'; };

    my $forceregister = '';
    if ($forcestudent eq '') {
        $forceregister = $env{'form.register'};
    }

#------------Get rights
 my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
 my %syllabus=&Apache::lonnet::dump('aboutme',$cdom,$cnum);
    my $allowed=0;
  my $privleged=$allowed=(($env{'user.name'} eq $cnum) && 
			       ($env{'user.domain'} eq $cdom));
       if ($forcestudent or $target eq 'tex') { $allowed=0; } 
 

# --------------------------------------- There is such a user, get environment
  
    if ($target ne 'tex') {
	my $rss_link = &Apache::lonrss::rss_link($cnum,$cdom);
        my $args = {'function' => $forcestudent,
                    'domain'   => $cdom,
                    'force_register' => $forceregister};
        if ($env{'form.popup'}) {
            $args->{'no_nav_bar'} = 1;
        }
	$args->{'bread_crumbs'} = [{href=>"/adm/fhwfdev/$cnum/aboutme",text=>"Personal Information Page"}];
	my $start_page = 
	    &Apache::loncommon::start_page("Personal Data",$rss_link,$args);
	$r->print($start_page);
        
    }   

#Print Privacy Note
       if ($allowed) {          
           $r->print('<p class="LC_info">'
                    .'<b>'.&mt('Privacy Note:').'</b> '
                    .&mt('The information you submit can be viewed by anybody who is logged into LON-CAPA. Do not provide information that you are not ready to share publicly.')
                    .'</p>'
           );
	} 

#Print Help Text
if  ($target ne 'tex') {
	if($allowed){
		$r->print(&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')));
	}
}

#----------------Print Functions
	if( $target ne 'tex'){
		 $r->print(&Apache::lontemplate::start_functionslist());
      		if($allowed){
			 my $query_string = &build_query_string({'forcestudent' => '1','popup' => $env{'form.popup'}});		
                        $r->print(&Apache::lontemplate::item_functionslist(
                            '<a href="'.$r->uri.$query_string.'">'.&mt('Show Public View').'</a>'
                           .&Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView')));
    		}elsif($privleged){
			my $query_string = &build_query_string({'forceedit' => '1','popup' => $env{'form.popup'}});
                        $r->print(&Apache::lontemplate::item_functionslist(
                            '<a href="'.$r->uri.$query_string.'">'. &mt('Edit').'</a>'));
		}
                $r->print(&Apache::lontemplate::item_functionslist(
                    &Apache::lontemplate::send_message($r,$cnum,$cdom)));

		if ($env{'request.course.id'} && &Apache::lonnet::allowed('srm',$env{'request.course.id'}) && &in_course($cdom,$cnum)) {
			if (&Apache::lonnet::allowed('vsa', $env{'request.course.id'}) || &Apache::lonnet::allowed('vsa', $env{'request.course.id'}.'/'.
					 $env{'request.course.sec'})) {
                            $r->print(&Apache::lontemplate::item_functionslist(
                                &Apache::loncommon::track_student_link('View recent activity by this student',$cnum,$cdom)));
	    		}
                        if (&Apache::lonnet::allowed('vgr', $env{'request.course.id'}) || 
                            &Apache::lonnet::allowed('vgr', $env{'request.course.id'}.'/'.
                                                     $env{'request.course.sec'})) {
                            $r->print(&Apache::lontemplate::item_functionslist(
                                &Apache::loncommon::slot_reservations_link('Slot reservation history',$cnum,$cdom)));
                        }
                        $r->print(&Apache::lontemplate::item_functionslist(
                            &Apache::loncommon::noteswrapper(&mt('Add Records'),$cnum,$cdom)));
		}
        $r->print(&Apache::lontemplate::end_functionslist());
	}  
#------Print Headtitle
 if ($target ne 'tex') {
	 $r->print('<div class="LC_ContentBoxSpecial">');
	$r->print('<h2 class="LC_hcell">'.&Apache::loncommon::plainname($cnum,$cdom).'</h2>');
	$r->print('<blockquote>');
	 if ($courseenv{'nickname'}) {
      	 	$r->print('<h2>&quot;'.$courseenv{'nickname'}.'&quot;</h2>');
    	}
	$r->print('<h3>'.&Apache::lonnet::domain($cdom,'description').'</h3>');
 }
else{
	$r->print('\noindent{\large\textbf{'.&Apache::loncommon::plainname($cnum,$cdom).'}}\\\\\\\\');
	$r->print('\textbf{'.&Apache::lonnet::domain($cdom,'description').'}\\\\');	
}
# does this user have privileges to post, etc?

     
	my $query_string; 
	
      if (($env{'form.uploaddoc.filename'}) &&
          ($env{'form.storeupl'}) && ($allowed)) {
 	  if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
	      if ($syllabus{'uploaded.photourl'}) {
		  &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
	      }
	      $syllabus{'uploaded.photourl'}=
                 &Apache::lonnet::userphotoupload('uploaddoc','aboutme');
 	  }
          $syllabus{'uploaded.lastmodified'}=time;
          &Apache::lonnet::put('aboutme',\%syllabus,$cdom,$cnum);
       }
    if ($allowed && $env{'form.delupl'}) {
	if ($syllabus{'uploaded.photourl'}) {
	    &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
	    delete($syllabus{'uploaded.photourl'});
	    &Apache::lonnet::del('aboutme',['uploaded.photourl'],$cdom,$cnum);
	}
    }
       if (($allowed) && ($env{'form.storesyl'})) {
	   foreach my $syl_field (keys(%syllabusfields)) {
               my $field=$env{'form.'.$syl_field};
               $field=~s/\s+$//s;
               $field=&Apache::lonfeedback::clear_out_html($field,
                                                           $env{'user.adv'});
	       $syllabus{$syl_field}=$field;
           }
           $syllabus{'uploaded.lastmodified'}=time;
           &Apache::lonnet::put('aboutme',\%syllabus,$cdom,$cnum);
       }

my $lastmod;
my $image; 
# ---------------------------------------------------------------- Get syllabus
    if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
       $lastmod=$syllabus{'uploaded.lastmodified'};
       $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
 	$r->print('<br />'.&mt('Last updated').': '.$lastmod);


       if ($syllabus{'uploaded.photourl'}) {
	   &Apache::lonnet::allowuploaded('/adm/aboutme',
					  $syllabus{'uploaded.photourl'});
	
           #This call is to resize all "Personal Information" images in the LonCapa System. When its done, you can remove this line.
	   &Apache::lonnet::resizeImage(&Apache::lonnet::filelocation('',$syllabus{'uploaded.photourl'}));
	   #---End Resize---

	   $image=qq{<img name="userPhoto" src="$syllabus{'uploaded.photourl'} " class="LC_AboutMe_Image" />};
	   
	   if ($target eq 'tex') {
	       $image=&Apache::lonxml::xmlparse($r,'tex',$image);
	   }
	
       }
	
       if ($allowed) {
           $r->print(
	 '<form method="post" enctype="multipart/form-data">'.
         '<h3>'.&mt('Upload a Photo').'</h3>'.
         '<input type="file" name="uploaddoc" size="50" />'.
         '<input type="submit" name="storeupl" value="'.&mt('Upload').'" />'.
         '<input type="hidden" name="popup" value="'.$env{'form.popup'}.'" />'.
	 '</form><form method="post"><input type="submit" name="delupl" value="'.&mt('Delete Photo').'" /> </form><p>
');

       }

	if($allowed) {
		$r->print('<form method="post">');
	}

	 if($target ne 'tex') #print Image
     	 {	
		&Apache::lontemplate::start_ContentBox($r);			
		&Apache::lontemplate::end_ContentBox($r);
		$r->print($image);		
		
	}#End Print Image

	#Print Content eg. Contactinfo aboutme,...	
	&Apache::lontemplate::print_aboutme_content_template($r,$allowed,$target,\%syllabusfields,\%syllabus);	
        #End Print Content

       if($target ne 'tex')#Begin Print RSS and portfiles
       {			
		&print_portfiles_link($r,$is_course);
		if(&Apache::lonrss::advertisefeeds($cnum,$cdom) ne ''){
			&Apache::lontemplate::print_start_template($r,'RSS Feeds and Blogs','LC_ContentBoxSpecial');
			$r->print(&Apache::lonrss::advertisefeeds($cnum,$cdom));		
			&Apache::lontemplate::print_end_template($r);		
		}		
		
       } #End  Print RSS and portfiles

       
       if ($allowed) {
           if ($env{'form.popup'}) {
               $r->print('<input type="hidden" name="popup" value="'.
                         $env{'form.popup'}.'" />');
           }
	   $r->print('</form>');
       }
       if ($target ne 'tex') {$r->print('<br />');} else {$r->print('\\\\');}
    } else {
	# &Apache::lontemplate::send_message($r,$cnum,$cdom);
       $r->print('<p>'.&mt('No personal information provided').'.</p>');
    }
    if($target ne 'tex'){
		#$r->print('</blockquote>');
    		#$r->print('</div>');	
	}

    if ($env{'request.course.id'}
	&& &Apache::lonnet::allowed('srm',$env{'request.course.id'})
	&& &in_course($cdom,$cnum)) {
	if ($target ne 'tex') {	   
	   &Apache::lontemplate::print_start_template($r,&mt('User Notes, Records of Face-To-Face Discussions, and Critical Messages in Course'),'LC_ContentBoxSpecial');
	   $r->print('<span class="LC_info">');
	   $r->print(&mt('Shared by course faculty and staff').&Apache::loncommon::help_open_topic("Course_Face_To_Face_Records,Course_Critical_Message"));
		$r->print('</span> <p>');	   
&Apache::lonmsgdisplay::disfacetoface($r,$cnum,$cdom);
	   $r->print('</p>');
	   &Apache::lontemplate::print_end_template($r);
	    
	} else {
	    $r->print('\\\\\textbf{'.&mt('User Notes, Records of Face-To-Face Discussions, and Critical Messages in Course').'}\\\\'.&mt('Shared by course faculty and staff').'\\\\\\\\');
	    &Apache::lonmsgdisplay::disfacetoface($r,$cnum,$cdom);
	}
    }
    $r->print('</blockquote>');
    $r->print('</div>');
    if ($target ne 'tex') {
        if ($env{'form.popup'}) {
            $r->print('<p><a href="javascript:window.close()">'.&mt('Close window').'</a>');
        }
	$r->print(&Apache::loncommon::end_page());
    } else {
	$r->print('\end{document}');
    }

  
	
    return OK;
}

sub in_course {
    my ($udom,$uname,$cdom,$cnum,$type) = @_;
    $type ||= 'any';
    if (!defined($cdom) || !defined($cnum)) {
	my $cid  = $env{'request.course.id'};
	$cdom = $env{'course.'.$cid.'.domain'};
	$cnum = $env{'course.'.$cid.'.num'};
    }
    my %roles = &Apache::lonnet::dump('roles',$udom,$uname);
    my @course_roles = grep(m{^/\Q$cdom\E/\Q$cnum\E[/_]}, keys(%roles));
    return 0 if (!@course_roles);
    return 1 if ($type eq 'any');
    my $now = time();
    foreach my $role (@course_roles) {
	my (undef,$role_end,$role_start)=split(/\_/,$roles{$role});
	my $status = 'active';
	if ($role_start > 0 && $now < $role_start) {
	    $status = 'future';
	}
	if ($role_end > 0 && $now > $role_end) {
	    $status = 'previous';
	}
	return 1 if ($status eq $type);
    }
    return 0;
}

sub aboutme_info {
    my ($r,$is_course) = @_;
    my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
    my $name;
    if (!$is_course) {
        $name = &Apache::loncommon::plainname($cnum,$cdom);
    }
    return ($cdom,$cnum,$name);
}

sub print_portfiles_link {
    my ($r,$is_course) = @_;
    my ($cdom,$cnum,$name) = &aboutme_info($r,$is_course);
    my $filecounts = &portfolio_files($r,'showlink',undef,$is_course,
                                      $cdom,$cnum,$name);
    my $query_string = &build_query_string();
    my $output;
    my %lt = &Apache::lonlocal::texthash(
        'vpfi' => 'Viewable portfolio files',
        'vgpf' => 'Viewable group portfolio files',
        'difl' => 'Display file listing',
    );                     
    if ($filecounts->{'both'} > 0) {
	$output = '<div class="LC_ContentBoxSpecial"><h4 class="LC_hcell">';
	$output .= ($is_course?$lt{'vgpf'}:$lt{'vpfi'}).'</h4>';
        
	#$output = '<h4>'.($is_course?$lt{'vgpf'}:$lt{'vpfi'}).'</h4>';
        $output .= '<a href="/adm/'.$cdom.'/'.$cnum.'/aboutme/portfolio'.
                   $query_string.'">'.$lt{'difl'}.
                   '</a><br /><br />';
        if ($filecounts->{'both'} == 1) {
            if ($is_course) {
                $output .= &mt('One group portfolio file is available.').'<ul>';
            } else {
                $output .= &mt('One portfolio file owned by [_1] is available.',$name).'<ul>';
            }
        } else {
            if ($is_course) {
                $output .= &mt('A total of [_1] group portfolio files are available.',$filecounts->{'both'}).'<ul>';
            } else {
                $output .= &mt('A total of [_1] portfolio files owned by [_2] are available.',$filecounts->{'both'},$name).'<ul>';
            }
        }
        if ($filecounts->{'withoutpass'}) {
	    $output .= '<li>'.&mt('[quant,_1,file is,files are] publicly accessible.',$filecounts->{'withoutpass'}).'</li>';
        }
        if ($filecounts->{'withpass'}) {
	    $output .= '<li>'.&mt('[quant,_1,file requires,files require] a passphrase for access.',$filecounts->{'withpass'}).'</li>';
        }
        $output .= '</ul>';
	$output .='</p>';
	$output .='</div>';
    }
    $r->print($output);
    return;
}

sub build_query_string {
    my ($new_items) = @_;
    my $query_string;
    my @formelements = ('register'); 
    my $new = 0;
    if (ref($new_items) eq 'HASH') {
        $new = 1;
        if (!defined($new_items->{'forceedit'}) && 
            !defined($new_items->{'forcestudent'})) {
            push(@formelements,('forceedit','forcestudent'));
        }
    } else {
        push(@formelements,('forceedit','forcestudent'));
    }
    foreach my $element (@formelements) {
        if (exists($env{'form.'.$element})) {
            if ((!$new) || (!defined($new_items->{$element}))) {
                $query_string .= '&amp;'.$element.'='.$env{'form.'.$element};
            }
        }
    }
    if ($new) {
        foreach my $key (keys(%{$new_items})) {
            $query_string .= '&amp;'.$key.'='.$new_items->{$key};
        }
    }
    $query_string =~ s/^\&amp;/\?/;
    return $query_string;
}

sub display_portfolio_header {
    my ($r,$is_course) = @_;
    my ($cdom,$cnum,$name) = &aboutme_info($r,$is_course);
    my $query_string = &build_query_string();
    &Apache::lonhtmlcommon::clear_breadcrumbs();
    my $forcestudent='';
    if ($env{'form.forcestudent'}) { $forcestudent='student'; };

    my $output;
    if ($is_course) {
        $output = 
            &Apache::loncommon::start_page('Viewable group portfolio files',undef,
                                            {'function' => $forcestudent,
                                             'domain'   => $cdom,});
        $output .= '<h3>'.&mt('Group Portfolio files').'</h3>';
    } else {
        $output  =
            &Apache::loncommon::start_page('Viewable portfolio files',undef,
                                            {'function' => $forcestudent,
                                             'domain'   => $cdom,});
        if (!($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public')) {
            &Apache::lonhtmlcommon::add_breadcrumb
                ({href=>"/adm/$cdom/$cnum/aboutme".$query_string,
                  text=>&mt('Personal Information Page - [_1]',$name),
                  title=>&mt('Go to personal information page for [_1]', $name)},
		 {href=>"/adm/$cdom/$cnum/aboutme/portfolio",
                  text=>&mt('Viewable files - [_1]', $name),
                  title=>&mt('Viewable portfolio files for [_1]', $name)}
            );
            $output .= &Apache::lonhtmlcommon::breadcrumbs(&mt('Viewable portfolio files.'));
        }
        $output .= '<h3>'.&mt('Portfolio files for [_1]',$name).'</h3>';
    }
    $r->print($output);
    return;
}

sub display_portfolio_files {
    my ($r,$is_course) = @_;
    my ($cdom,$cnum,$name) = &aboutme_info($r,$is_course);
    my %lt = &Apache::lonlocal::texthash(
        'withoutpass' => 'passphrase not required',
        'withpass'    => 'passphrase protected',
        'both'        => 'all access types ',
    );

    my $portaccess = 'withoutpass';
    if (exists($env{'form.portaccess'})) {
        $portaccess = $env{'form.portaccess'};
    }

    my $output = '<form action="'.&HTML::Entities::encode($r->uri,'<>&"')
	.'" name="displaystatus" method="post">'.
	&mt('File access type: ').'<select name="portaccess">';
    foreach my $type ('withoutpass','withpass','both') {
        $output .= '<option value="'.$type.'" ';
        if ($portaccess eq $type) {
            $output .= 'selected="selected"';
        }
        $output .= '>'.$lt{$type}.'</option>';
    }
    $output .= '</select>'."\n".
               '<input type="submit" name="portaccessbutton" value="'.
               &mt('Update display').'" />';
    $output .= '</form><br /><br />';
    $r->print($output);
    my $filecounts = &portfolio_files($r,'listfiles',\%lt,$is_course,
                                      $cdom,$cnum,$name);
    if (!($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public')) {
        my $query_string = &build_query_string();
        $r->print('<br /><br /><a href="/adm/'.$cdom.'/'.$cnum.
                  '/aboutme'.$query_string.'">');
        if ($is_course) {
            $r->print(&mt('Course Information page'));
        } else {
            $r->print(&mt('Information about [_1]',$name));
        }
        $r->print('</a>');
    }
    return;
}

sub portfolio_files {
    my ($r,$mode,$lt,$is_course,$cdom,$cnum,$name) = @_;
    my $filecounts = {
                       withpass    => 0,
                       withoutpass => 0,
                       both        => 0,
                     };
    my $current_permissions =
	&Apache::lonnet::get_portfile_permissions($cdom,$cnum);
    my %access_controls = 
	&Apache::lonnet::get_access_controls($current_permissions);
    my $portaccess;
    if ($mode eq 'showlink') {
        $portaccess = 'both';
    } else {
        $portaccess = 'withoutpass';
        if (exists($env{'form.portaccess'})) {
            $portaccess = $env{'form.portaccess'};
        }
    }

    my $diroutput;
    if ($is_course) {
        my %files_by_group;
        foreach my $filename (sort(keys(%access_controls))) {
            my ($group,$path) = split('/',$filename,2);
            $files_by_group{$group}{$path} = $access_controls{$filename}; 
        }
        foreach my $group (sort(keys(%files_by_group))) {
            my %fileshash;
            my $grpout .= &build_hierarchy($r,$cdom,$cnum,$portaccess,
                                           $is_course,$filecounts,$mode,
                                           $files_by_group{$group},
                                           \%fileshash,$group);
            if ($grpout) {
                $diroutput .= '<h3>'.$group.'</h3>'.$grpout.'<br />';
            }
        }
    } else {
        my %allfileshash;
        $diroutput = &build_hierarchy($r,$cdom,$cnum,$portaccess,$is_course,
                                      $filecounts,$mode,\%access_controls,
                                      \%allfileshash);
    }
    if ($mode eq 'listfiles') {
        if ($filecounts->{'both'}) {
             $r->print($diroutput);
        } else {
            my $access_text;
            if (ref($lt) eq 'HASH') {
                $access_text = $lt->{$portaccess};   
            }
            $r->print(&mt('There are no available files of the specified access type: [_1]',$access_text));
        }
    }
    return $filecounts;
}

{ 
    my $count=0;
    sub portfolio_table_start {
	$count=0;
	return '<table class="LC_aboutme_port">';
    }
    sub portfolio_row_start {
	$count++;
	my $class = ($count%2)?'LC_odd_row'
	                      :'LC_even_row';
	return '<tr class="'.$class.'">';
    }
}

sub build_hierarchy {
    my ($r,$cdom,$cnum,$portaccess,$is_course,$filecounts,$mode,$access_info,
        $allfileshash,$group) = @_;
    foreach my $filename (sort(keys(%{$access_info}))) {
        my $access_status =
           &Apache::lonnet::get_portfolio_access($cdom,$cnum,$filename,$group,                                                 $$access_info{$filename});
        if ($portaccess eq 'both') {
            if (($access_status ne 'ok') &&
                ($access_status !~  /^[^:]+:guest_/)) {
                next;
            }
        } elsif ($portaccess eq 'withoutpass') {
            if ($access_status ne 'ok') {
                next;
            }
        } elsif ($portaccess eq 'withpass') {
            if ($access_status !~  /^[^:]+:guest_/) {
                next;
            }
        }
        if ($mode eq 'listfiles') {
            $filename =~ s/^\///;
            my @pathitems = split('/',$filename);
            my $lasthash = $allfileshash;
            while (@pathitems > 1) {
                my $newlevel = shift(@pathitems);
                if (!exists($lasthash->{$newlevel})) {
                    $lasthash->{$newlevel} = {};
                }
                $lasthash = $lasthash->{$newlevel};
            }
            $lasthash->{$pathitems[0]} = $filename;
        }
        if ($access_status eq 'ok') {
            $filecounts->{'withoutpass'} ++;
        } elsif ($access_status =~  /^[^:]+:guest_/) {
            $filecounts->{'withpass'} ++;
        }
    }
    $filecounts->{'both'} =  $filecounts->{'withoutpass'} +
                              $filecounts->{'withpass'};
    my $output;
    if ($mode eq 'listfiles') {
        if ($filecounts->{'both'} > 0) {
            $output = &portfolio_table_start();
            $output .= &parse_directory($r,0,$allfileshash,'',$is_course,
                                        $group);
            $output .= '</table>';
        }
    }
    return $output;
}

sub parse_directory {
    my ($r,$depth,$currhash,$path,$is_course,$group) = @_;
    my ($cdom,$cnum,$name) = &aboutme_info($r,$is_course);
    $depth++;
    my $output;

    my $portfolio_root = &Apache::portfolio::get_portfolio_root($cdom,$cnum,
                                                                $group);
    my $getpropath = 1;
    my %dirlist = map {
	    ((split('&',$_,2))[0],1)
	} &Apache::lonnet::dirlist($portfolio_root.$path,$cdom,$cnum,$getpropath);
    foreach my $item (sort(keys(%{$currhash}))) {
        $output .= &portfolio_row_start();
        $output .= '<td style="padding-left: '.($depth*25).'px">';
        if (ref($currhash->{$item}) eq 'HASH') {
            my $title=&HTML::Entities::encode($item,'<>&"');
            $output .= '<img src="'.&Apache::loncommon::lonhttpdurl("/adm/lonIcons/navmap.folder.open.gif").'" alt="'.&mt('Folder').' '.$title.'" class="LC_icon" />&nbsp;'.$title;
	    $output .= '</td><td></td></tr>';
            $output .= &parse_directory($r,$depth,$currhash->{$item},
					$path.'/'.$item,$is_course,$group);
        } else {
	    my $file_name; 
	    if ($currhash->{$item} =~ m|/([^/]+)$|) {
		$file_name = $1;
	    } else {
		$file_name = $currhash->{$item};
	    }
	    my $have_meta = exists($dirlist{$file_name.'.meta'});
            my $url;
            if ($is_course) {
                $url = '/uploaded/'.$cdom.'/'.$cnum.'/groups/'.$group.
                       '/portfolio/'.$currhash->{$item};
            } else { 
	        $url = '/uploaded/'.$cdom.'/'.$cnum.'/portfolio/'.
		       $currhash->{$item};
            }
            my $showname;
	    if ($have_meta) {
		$showname = &Apache::lonnet::metadata($url,'title');
	    }
	    if ($showname eq '') {
		$showname = $file_name;
	    } else {
		$showname = $file_name.' ('.$showname.')';
	    }

            $showname=&HTML::Entities::encode($showname,'<>&"');
            $output .= '<a href="'.$url.'">'.
		'<img alt="" src="'.&Apache::loncommon::icon($currhash->{$item}).'" class="LC_icon" />'.
		'&nbsp;'.$showname.'</a>';
	    $output.='</td><td>';
	    if ($have_meta) {
		$output.= '<a href="'.$url.'.meta"><img alt="'.&mt('Metadata').'" src="'.
		&Apache::loncommon::lonhttpdurl('/res/adm/pages/catalog.gif').
		'" class="LC_icon" /></a>';
	    }
	    $output .= '</td></tr>';
        }
    }
    return $output;
}

sub aboutme_access {
    my ($uname,$udom) = @_;
    my $privcheck = $env{'request.course.id'};
    my $sec;
    if ($env{'request.course.sec'} ne '') {
        $sec = $env{'request.course.sec'};
        $privcheck .= '/'.$sec;
    }
    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
    if (($cdom eq '') || ($cnum eq '')) {
        my %coursehash = &coursedescription($env{'request.course.id'});
        $cdom = $coursehash{'domain'};
        $cnum = $coursehash{'cnum'};
    }
    if ((&Apache::lonnet::allowed('srm',$privcheck)) || 
        (&Apache::lonnet::allowed('dff',$privcheck))) {
        if (&in_course($uname,$udom,$cnum,$cdom)) {
            return 1;
        }
    }
    return;
}

1;
__END__