# 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/
#

package Apache::portfolio;
use strict;
use Apache::Constants qw(:common :http);
use Apache::loncommon;
use Apache::lonnet;
use Apache::lontexconvert;
use Apache::lonfeedback;
use Apache::lonlocal;
use Apache::lonnet;
use Apache::longroup;
use HTML::Entities;
use LONCAPA;

# receives a file name and path stub from username/userfiles/portfolio/
# returns an anchor tag consisting encoding filename and currentpath
sub make_anchor {
    my ($url, $filename, $current_path, $current_mode, $field_name,
        $continue_select,$group) = @_;
    if ($continue_select ne 'true') {$continue_select = 'false'};
    my $anchor = '<a href="'.$url.'?selectfile='.$filename.'&amp;currentpath='.$current_path.'&amp;mode='.$current_mode.'&amp;continue='.$continue_select.'&amp;fieldname='.$field_name;
    if (defined($group)) {
        $anchor .= '&amp;group='.$group;
    }
    $anchor .= '">'.$filename.'</a>';
    return $anchor;
}
my $dirptr=16384;
sub display_common {
    my ($r,$url,$current_path,$is_empty,$dir_list,$group)=@_;
    my $groupitem;
    my $namespace = &get_namespace($group);
    my $port_path = &get_port_path($group);
    if (defined($group)) {
        $groupitem = '<input type="hidden" name="group" value="'.$group.'" />';
    } 
    my $iconpath= $r->dir_config('lonIconsURL') . "/";
    my %text=&Apache::lonlocal::texthash('upload' => 'Upload',
					 'upload_label' =>  
					 'Upload file to current directory:',
					 'createdir' => 'Create Subdirectory',
					 'createdir_label' => 
					 'Create subdirectory in current directory:');
    my $escuri = &HTML::Entities::encode($r->uri,'&<>"');
    $r->print(<<"TABLE"); 
<table id="LC_portfolio_actions">
  <tr id="LC_portfolio_upload">
    <td class="LC_label">
      $text{'upload_label'}
    </td>
    <td class="LC_value">$groupitem
      <form method="post" enctype="multipart/form-data" action="$escuri">
        <input name="uploaddoc" type="file" />
	<input type="hidden" name="currentpath" value="$current_path" />
	<input type="hidden" name="action" value="$env{"form.action"}" />
	<input type="hidden" name="fieldname" value="$env{"form.fieldname"}" />
	<input type="hidden" name="mode" value="$env{"form.mode"}" />
	<input type="submit" name="storeupl" value="$text{'upload'}" />
      </form>
    </td>
  </tr>
  <tr id="LC_portfolio_createdir">
    <td class="LC_label">
      $text{'createdir_label'}
    </td>
    <td class="LC_value">
      <form method="post" action="$escuri">
        <input name="newdir" type="input" />$groupitem
        <input type="hidden" name="currentpath" value="$current_path" />
        <input type="hidden" name="action" value="$env{"form.action"}" />
        <input type="hidden" name="fieldname" value="$env{"form.fieldname"}" />
        <input type="hidden" name="mode" value="$env{"form.mode"}" />
        <input type="submit" name="createdir" value="$text{'createdir'}" />
      </form>
    </td>
  </tr>
</table>
TABLE
    my @tree = split (/\//,$current_path);
    $r->print('<font size="+2">'.&make_anchor($url,$port_path,'/',$env{"form.mode"},$env{"form.fieldname"},$env{"form.continue"},$group).'/');
    if (@tree > 1){
        my $newCurrentPath = '';
        for (my $i = 1; $i< @tree; $i++){
            $newCurrentPath .= $tree[$i].'/';
            $r->print(&make_anchor($url,$tree[$i],'/'.$newCurrentPath, $env{"form.mode"},$env{"form.fieldname"}, $env{"form.continue"},$group).'/');
        }
    }
    $r->print('</font>');
    &Apache::lonhtmlcommon::store_recent($namespace,$current_path,$current_path);
    $r->print('<br /><form method="post" action="'.$url.'?mode='.$env{"form.mode"}.'&amp;fieldname='.$env{"form.fieldname"});
    if (defined($group)) {
        $r->print('&amp;group='.$group);
    }
    $r->print('">'.
	      &Apache::lonhtmlcommon::select_recent($namespace,'currentpath',
						    'this.form.submit();'));
    $r->print("</form>");
}
sub display_directory {
    my ($r,$url,$current_path,$is_empty,$dir_list,$group)=@_;
    my $iconpath= $r->dir_config('lonIconsURL') . "/";
    my ($groupitem,$groupecho);
    my $display_out;
    my $select_mode;
    my $checked_files;
    my $port_path = &get_port_path($group);
    my ($uname,$udom) = &get_name_dom($group);
    if (defined($group)) {
       $groupitem = '<input type="hidden" name="group" value="'.$group.'" />'; 
       $groupecho = '&amp;group='.$group;
    }
    my $current_permissions = &Apache::lonnet::get_portfile_permissions($udom,
                                                                        $uname);
    my %locked_files = &Apache::lonnet::get_marked_as_readonly_hash(
                                                  $current_permissions,$group);
    my %access_controls = &Apache::lonnet::get_access_controls($current_permissions,$group);
    my $now = time;
    if ($env{"form.mode"} eq 'selectfile'){
	&select_files($r);
	$checked_files =&Apache::lonnet::files_in_path($uname,$env{'form.currentpath'});
	$select_mode = 'true';
    } 
    if ($is_empty && ($current_path ne '/')) {
        $display_out = '<form method="post" action="'.$url.'">'.$groupitem.
        '<input type="hidden" name="action" value="deletedir" />'.
        '<input type="submit" name="deletedir" value="'.&mt("Delete Directory").'" />'.
        '<input type="hidden" name="selectfile" value="" />'.
        '<input type="hidden" name="currentpath" value="'.$current_path.'" />'.
        '</form>';
        
        $r->print($display_out);
	return;
    }
    if ($select_mode eq 'true') {
        $r->print('<form method="post" name="checkselect" action="'.$url.'">');
        $r->print('<table class="LC_browser">'.
            '<tr><th>Select</th><th>&nbsp;</th><th>Name</th><th>Size</th><th>Last Modified</th></tr>');
    } else {
        $r->print('<form method="post" action="'.$url.'">');
        $r->print('<table class="LC_browser">'.
            '<tr><th colspan="2">Actions</th><th>&nbsp;</th><th>Name</th><th>Size</th><th>Last Modified</th><th>Current Access Status</th></tr>');
    }
    if (defined($group)) {
        $r->print("\n".$groupitem."\n");
    }
    my $href_location="/uploaded/$udom/$uname/$port_path".$current_path;
    my $href_edit_location="/editupload/$udom/$uname/$port_path".$current_path;
    my @dir_lines;
    my %versioned;
    foreach my $line (sort 
		      { 
			  my ($afile)=split('&',$a,2);
			  my ($bfile)=split('&',$b,2);
			  return (lc($afile) cmp lc($bfile));
		      } (@$dir_list)) {
    	#$strip holds directory/file name
    	#$dom 
    	my ($filename,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef)=split(/\&/,$line,16); 
    	$filename =~ s/\s+$//;
    	my ($fname,$version,$extension) = &Apache::grades::file_name_version_ext($filename);
    	if ($version) {
    	    $versioned{$fname} .= $version.",";
    	}
        push(@dir_lines, [$filename,$dom,$testdir,$size,$mtime,$obs]);
    }
    foreach my $line (@dir_lines) {
        my ($filename,$dom,$testdir,$size,$mtime,$obs) = @$line;
        my ($fname,$version,$extension) = &Apache::grades::file_name_version_ext($filename);
    	if (($filename ne '.') && ($filename ne '..') && ($filename !~ /\.meta$/ ) && ($filename !~ /(.*)\.(\d+)\.([^\.]*)$/)) {
            if ($dirptr&$testdir) {
		my $colspan='colspan="2"';
                if ($select_mode eq 'true'){
		    undef($colspan);
                }
		$r->print('<tr class="LC_browser_folder"><td '.$colspan.'><img alt="'.&mt('closed folder').'" src="'.$iconpath.'folder_closed.gif" /></td>');
                $r->print('<td>Go to ...</td>');
                $r->print('<td>'.&make_anchor($url,$filename.'/',$current_path.$filename.'/',$env{'form.mode'},$env{"form.fieldname"},$env{'form.continue'},$group).'</td>'); 
                $r->print('</tr>'); 
            } else {
		my $css_class = 'LC_browser_file';
		my $line;
                my $version_flag;
                if (exists($versioned{$fname})) {
                   $version_flag = "*";
                } else {
                    $version_flag = "";
                }
               my $fullpath = $current_path.$filename;
                $fullpath = &prepend_group($fullpath,$group);
                if ($select_mode eq 'true'){
                    $line='<td><input type="checkbox" name="checkfile" value="'.$filename.'"';
		    if ($$checked_files{$filename} eq 'selected') {
                        $line.=" checked ";
                    }
		    $line.=' /></td>';
                } else {
                    if (exists $locked_files{$fullpath}) {
                        $line.='<td colspan="2"><a href="'.$url.'?lockinfo='.$current_path.$filename.$groupecho.'">Locked</a></td>';
			$css_class= 'LC_browser_file_locked';
                    } else {
			my $cat='<img alt="'.&mt('Catalog Information').
			    '" src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/catalog.gif').'" />';
                        $line.='<td><input type="checkbox" name="selectfile" value="'.$filename.'" />
                            <a href="'.$url.'?rename='.$filename.'&amp;currentpath='.$current_path.$groupecho.'">Rename</a></td>
                            <td><a href="'.$href_edit_location.$filename.'.meta">'.$cat.'</a>
                            </td>';
                    }
		    $r->print('<tr class="'.$css_class.'">');
		    $r->print($line);
                }
                my $curr_access;
                my $pub_access = 0;
                my $guest_access = 0;
                my $cond_access = 0;
                foreach my $key (sort(keys(%{$access_controls{$fullpath}}))) {
                    my ($num,$scope,$end,$start) = &unpack_acc_key($key);
                    if (($now > $start) && (!$end || $end > $now)) {
                        if ($scope eq 'public')  {
                            $pub_access = 1;
                        } elsif ($scope eq 'guest') {
                            $guest_access = 1;
                        } else {
                            $cond_access = 1;
                        }
                    }
                }
                if (!$pub_access && !$guest_access && !$cond_access) {
                    $curr_access = &mt('Private');
                } else {
                    my @allaccesses; 
                    if ($pub_access) {
                        push(@allaccesses,&mt('Public'));
                    }
                    if ($guest_access) {
                        push(@allaccesses,&mt('Password-protected'));
                    }
                    if ($cond_access) {
                        push(@allaccesses,&mt('Conditional'));
                    }
                    $curr_access = join('+ ',@allaccesses);
                }
                $r->print('<td><img alt="" src="'.&Apache::loncommon::icon($filename).'" /></td>');
                $r->print('<td><a href="'.$href_location.$filename.'">'.
			    $filename.'</a></td>'); 
                $r->print('<td>'.$size.'</td>');
                $r->print('<td>'.&Apache::lonlocal::locallocaltime($mtime).'</td>');
                $r->print('<td><span style="white-space: nowrap">'.&mt($curr_access).'&nbsp;&nbsp;&nbsp;'.
                          '<a href="'.$url.'?access='.$filename.
                          '&amp;currentpath='.$current_path.$groupecho.
                          '">'.&mt('View/Change').'</a></span></td>');
                $r->print('</tr>'); 
            }
        }
    }
    if ($select_mode eq 'true') {
        $r->print('</table>
            <input type="hidden" name="continue" value="true">
            <input type="hidden" name="fieldname" value="'.$env{'form.fieldname'}.'">
            <input type="hidden" name="mode" value="selectfile">
            <input type="submit" name="submit" value="Select checked files, and continue selecting." /><br />
            <input type="button" name="doit" onClick= "finishSelect();" value="Select checked files, and close window" />
            <input type="hidden" name="currentpath" value="'.$current_path.'" />
        </form>');        
    } else {
        $r->print('</table>
        <input type="submit" name="doit" value="Delete Checked Files" />
        <input type="hidden" name="action" value="delete" />
        <input type="hidden" name="currentpath" value="'.$current_path.'" />
        </form>');
    }
}

sub open_form {
    my ($r,$url)=@_;
    my @files=&Apache::loncommon::get_env_multiple('form.selectfile');
    $r->print('<form name="portform" method="post" action="'.$url.'">');
    $r->print('<input type="hidden" name="action" value="'.
	      $env{'form.action'}.'" />');
    $r->print('<input type="hidden" name="confirmed" value="1" />');
    foreach (@files) {
        $r->print('<input type="hidden" name="selectfile" value="'.
	      $_.'" />');
    }
    $r->print('<input type="hidden" name="currentpath" value="'.
	      $env{'form.currentpath'}.'" />');
}

sub close_form {
    my ($r,$url,$group,$button_text)=@_;
    if (!defined($button_text)) {
        $button_text = {
                         'continue' => &mt('Continue'),
                         'cancel'   => &mt('Cancel'),
                       };
    }
    $r->print('<p><input type="submit" value="'.$button_text->{'continue'}.'" />');
    if (defined($group)) {
       $r->print("\n".'<input type="hidden" name="group" value="'.
              $group.'" />');
    }
    $r->print('</p></form>');
    $r->print('<form action="'.$url.'" method="post">
               <p>
              <input type="hidden" name="currentpath" value="'.
	      $env{'form.currentpath'}.'" />');
    if (defined($group)) {
       $r->print("\n".'<input type="hidden" name="group" value="'.
              $group.'" />');
    }
    $r->print("\n".'   <input type="submit" value="'.$button_text->{'cancel'}.'" />
               </p></form>'); 
}

sub display_file {
    my ($path,$filename)=@_;
    my $display_file_text;
    my $file_start='<span class="LC_filename">';
    my $file_end='</span>';
    if (!defined($path)) { $path=$env{'form.currentpath'}; }
    if (!defined($filename)) { 
        $filename=$env{'form.selectfile'};
        $display_file_text = $file_start.$path.$filename.$file_end;
    } elsif (ref($filename) eq "ARRAY") {
        foreach my $file (@$filename) {
            $display_file_text .= $file_start.$path.$file.$file_end.'<br />';
        }
    } elsif (ref($filename) eq "SCALAR") {
        $display_file_text = $file_start.$path.$$filename.$file_end;
    } else {
	$display_file_text = $file_start.$path.$filename.$file_end;
    }
    return $display_file_text;
}

sub done {
    my ($message,$url,$group)=@_;
    unless (defined $message) {
        $message='Done';
    }
    my $result = '<h3><a href="'.$url.'?currentpath='.
	         $env{'form.currentpath'}.
	         '&fieldname='.$env{'form.fieldname'}.
	         '&mode='.$env{'form.mode'};
    if (defined($group)) {
        $result .= '&group='.$group;
    }
    $result .= '">'.&mt($message).'</a></h3>';
    return $result;
}

sub delete {
    my ($r,$url,$group)=@_;
    my @check;
    my $file_name = $env{'form.currentpath'}.$env{'form.selectfile'};
    $file_name = &prepend_group($file_name,$group);
    my @files=&Apache::loncommon::get_env_multiple('form.selectfile');
    my ($uname,$udom) = &get_name_dom($group);
    if (&Apache::lonnet::is_locked($file_name,$udom,$uname) eq 'true') {
        $r->print ("The file is locked and cannot be deleted.<br />");
        $r->print(&done('Back',$url,$group));
    } else {
        if (scalar(@files)) {
            &open_form($r,$url);
            $r->print('<p>'.&mt('Delete').' '.&display_file(undef,\@files).'?</p>');
            &close_form($r,$url,$group);
        } else {
            $r->print("No file was checked to delete.<br />");
            $r->print(&done(undef,$url,$group));
        }
    }
} 

sub delete_confirmed {
    my ($r,$url,$group)=@_;
    my @files=&Apache::loncommon::get_env_multiple('form.selectfile');
    my $result;
    my ($uname,$udom) = &get_name_dom($group);
    my $port_path = &get_port_path($group);
    foreach my $delete_file (@files) {
        $result=&Apache::lonnet::removeuserfile($uname,$udom,$port_path.
					       $env{'form.currentpath'}.
					       $delete_file);
        if ($result ne 'ok') {
	$r->print('<span class="LC_error"> An error occured ('.$result.
		  ') while trying to delete '.&display_file(undef, $delete_file).'</span><br />');
        }
    }
    $r->print(&done(undef,$url,$group));
}

sub delete_dir {
    my ($r,$url,$group)=@_;
    &open_form($r,$url);
    $r->print('<p>'.&mt('Delete').' '.&display_file().'?</p>');
    &close_form($r,$url,$group);
} 

sub delete_dir_confirmed {
    my ($r,$url,$group)=@_;
    my $directory_name = $env{'form.currentpath'};
    $directory_name =~ s|/$||; # remove any trailing slash
    my ($uname,$udom) = &get_name_dom($group);
    my $namespace = &get_namespace($group);
    my $port_path = &get_port_path($group);
    my $result=&Apache::lonnet::removeuserfile($uname,$udom,$port_path.
					       $directory_name);
					       
    if ($result ne 'ok') {
	$r->print('<span class="LC_error"> An error occured (dir) ('.$result.
		  ') while trying to delete '.$directory_name.'</span><br />');
    } else {
        # now remove from recent
#        $r->print('<br /> removing '.$directory_name.'<br /');
        &Apache::lonhtmlcommon::remove_recent($namespace,[$directory_name.'/']);
        my @dirs = split m!/!, $directory_name;
        
#        $directory_name =~ m/^(\/*\/)(\/*.)$/;
        $directory_name='/';
        for (my $i=1; $i < (@dirs - 1); $i ++){
            $directory_name .= $dirs[$i].'/';
        }
        $env{'form.currentpath'} = $directory_name;
    }
    $r->print(&done(undef,$url,$group));
}

sub rename {
    my ($r,$url,$group)=@_;
    my $file_name = $env{'form.currentpath'}.$env{'form.rename'};
    my ($uname,$udom) = &get_name_dom($group);
    $file_name = &prepend_group($file_name,$group);
    if (&Apache::lonnet::is_locked($file_name,$udom,$uname) eq 'true') {
        $r->print ("The file is locked and cannot be renamed.<br />");
        $r->print(&done(undef,$url,$group));
    } else {
        &open_form($r,$url);
        $r->print('<p>'.&mt('Rename').' '.&display_file().' to 
                   <input name="filenewname" type="input" size="50" />?</p>');
        &close_form($r,$url,$group);
    }
}

sub rename_confirmed {
    my ($r,$url,$group)=@_;
    my $filenewname=&Apache::lonnet::clean_filename($env{'form.filenewname'});
    my ($uname,$udom) = &get_name_dom($group);
    my $port_path = &get_port_path($group);
    if ($filenewname eq '') {
	$r->print('<span class="LC_error">'.
		  &mt("Error: no valid filename was provided to rename to.").
		  '</span><br />');
	$r->print(&done(undef,$url,$group));
	return;
    } 
    my $result=
	&Apache::lonnet::renameuserfile($uname,$udom,
            $port_path.$env{'form.currentpath'}.$env{'form.selectfile'},
            $port_path.$env{'form.currentpath'}.$filenewname);
    if ($result ne 'ok') {
	$r->print('<span class="LC_error">'.
		  &mt('An errror occured ([_1]) while trying to rename [_2]'
		      .' to [_3]',$result,&display_file(),
		      &display_file('',$filenewname)).'</span><br />');
    }
    if ($filenewname ne $env{'form.filenewname'}) {
        $r->print(&mt("The new file name was changed from:<br />[_1] to [_2]",
		      '<strong>'.&display_file('',$env{'form.filenewname'}).'</strong>',
		      '<strong>'.&display_file('',$filenewname).'</strong>'));
    }
    $r->print(&done(undef,$url,$group));
}

sub display_access {
    my ($r,$url,$group) = @_;
    my ($uname,$udom) = &get_name_dom($group);
    my $file_name = $env{'form.currentpath'}.$env{'form.access'};
    $file_name = &prepend_group($file_name,$group);
    my $current_permissions = &Apache::lonnet::get_portfile_permissions($udom,
                                                                        $uname);
    my %access_controls = &Apache::lonnet::get_access_controls($current_permissions,$group,$file_name);
    &open_form($r,$url);
    $r->print('<h3>'.&mt('Allowing others to retrieve portfolio file: [_1]',$env{'form.currentpath'}.$env{'form.access'}).'</h3>'."\n");
    $r->print(&mt('Access to this file by others can be set to be one or more of the following types: public, password-protected or conditional.').'<br /><ul><li>'.&mt('Public files are available to anyone without the need for login.').'</li><li>'.&mt('Password-protected files do not require log-in, but will require the viewer to enter the password you set.').'</li><li>'.&mt('Conditional files are accessible to logged-in users with accounts in the LON-CAPA network, who satify the conditions you set.').'<br />'.&mt('The conditions can include affiliation with a particular course or group, or a user account in a specific domain.').'<br />'.&mt('Alternatively you can grant access to people with specific LON-CAPA usernames and domains.').'</li></ul>');
    &access_setting_table($r,$access_controls{$file_name});
    my $button_text = {
                        'continue' => &mt('Proceed'),
                        'cancel' => &mt('Back to directory listing'),
                      };
    &close_form($r,$url,$group,$button_text);
}

sub update_access {
    my ($r,$url,$group) = @_;
    my $function = &Apache::loncommon::get_users_function();
    my $tablecolor = &Apache::loncommon::designparm($function.'.tabbg');
    my $totalprocessed = 0;
    my %processing;
    my %title  = (
                         'activate' => 'New control(s) added',
                         'delete'   => 'Existing control(s) deleted',
                         'update'   => 'Existing control(s) modified',
                     );
    my $changes;
    foreach my $chg (sort(keys(%title))) {     
        @{$processing{$chg}} = &Apache::loncommon::get_env_multiple('form.'.$chg);
        $totalprocessed += @{$processing{$chg}};
        foreach my $num (@{$processing{$chg}}) {
            my $scope = $env{'form.scope_'.$num};
            my ($start,$end) = &get_dates_from_form($num);
            my $newkey = $num.':'.$scope.'_'.$end.'_'.$start;
            if ($chg eq 'delete') {
                $$changes{$chg}{$newkey} = 1;
            } else {
                $$changes{$chg}{$newkey} = 
                            &build_access_record($num,$scope,$start,$end,$chg);
            }
        }
    }
    my $file_name = $env{'form.currentpath'}.$env{'form.selectfile'};
    $r->print('<h3>'.&mt('Allowing others to retrieve portfolio file: [_1]',
              $file_name).'</h3>'."\n");
    $file_name = &prepend_group($file_name,$group);
    my ($uname,$udom) = &get_name_dom($group);
    my ($errors,$outcome,$deloutcome,$new_values,$translation);
    if ($totalprocessed) {
        ($outcome,$deloutcome,$new_values,$translation) =
        &Apache::lonnet::modify_access_controls($file_name,$changes,$udom,
                                                $uname);
    }
    my $current_permissions = &Apache::lonnet::get_portfile_permissions($udom,
                                                                       $uname);
    my %access_controls = 
	&Apache::lonnet::get_access_controls($current_permissions,
					     $group,$file_name);
    if ($totalprocessed) {
        if ($outcome eq 'ok') {
            my $updated_controls = $access_controls{$file_name};
            my ($showstart,$showend);
            $r->print(&Apache::loncommon::start_data_table());
            $r->print(&Apache::loncommon::start_data_table_header_row());
            $r->print('<th>'.&mt('Type of change').'</th><th>'.
                      &mt('Access control').'</th><th>'.&mt('Dates available').
                      '</th><th>'.&mt('Additional information').'</th>');
            $r->print(&Apache::loncommon::end_data_table_header_row());
            foreach my $chg (sort(keys(%processing))) {
                if (@{$processing{$chg}} > 0) {
                    if ($chg eq 'delete') {
                        if (!($deloutcome eq 'ok')) {
                            $errors .='<span class="LC_error">'.
				&mt('A problem occurred deleting access controls: [_1]',$deloutcome).
				'</span>';
                            next;
                        }
                    }
                    my $numchgs = @{$processing{$chg}};
                    $r->print(&Apache::loncommon::start_data_table_row());
                    $r->print('<td rowspan="'.$numchgs.'">'.&mt($title{$chg}).
                              '.</td>');
                    my $count = 0;
                    foreach my $key (sort(keys(%{$$changes{$chg}}))) {
                        if ($count) {
                            $r->print(&Apache::loncommon::start_data_table_row());
                        }
                        my ($num,$scope,$end,$start) = &unpack_acc_key($key); 
                        my $newkey = $key;
                        if ($chg eq 'activate') {
                            $newkey =~ s/^(\d+)/$$translation{$1}/;
                        }
                        my $content = $$updated_controls{$newkey};
                        if ($chg eq 'delete') {
                            $showstart = &mt('Deleted');
                            $showend = $showstart;
                        } else {
                            $showstart = localtime($start);
                            if ($end == 0) {
                                $showend = &mt('No end date');
                            } else {
                                $showend = localtime($end);
                            }
                        }
                        $r->print('<td>'.&mt($scope));
                        if (($scope eq 'course') || ($scope eq 'group')) {
                            if ($chg ne 'delete') {
                                my $cid = $content->{'domain'}.'_'.$content->{'number'};
                                my %course_description = &Apache::lonnet::coursedescription($cid);
                                $r->print('<br />('.$course_description{'description'}.')');
                            }
                        }  
                        $r->print('</td><td>'.&mt('Start: ').$showstart.
                                  '<br />'.&mt('End: ').$showend.'</td><td>');
                        if ($chg ne 'delete') {
                            if ($scope eq 'guest') {
                                $r->print(&mt('Password').': '.$content->{'password'});
                            } elsif ($scope eq 'course' || $scope eq 'group') {
                                $r->print('<table border="0"><tr bgcol = "'.
                                          $tablecolor.'">');
                                $r->print('<th>'.&mt('Roles').'</th><th>'.
                                          &mt('Access').'</th><th>'.
                                          &mt('Sections').'</th>');
                                if ($scope eq 'course') {
                                    $r->print('<th>'.&mt('Groups').'</th>');
                                } else {
                                    $r->print('<th>'.&mt('Teams').'</th>');
                                }
                                $r->print('</tr>');
                                foreach my $id (sort(keys(%{$content->{'roles'}}))) {
                                    $r->print('<tr>');
                                    foreach my $item ('role','access','section','group') {
                                        $r->print('<td>');
                                        if ($item eq 'role') {
                                            my $ucscope = $scope;
                                            $ucscope =~ s/^(\w)/uc($1)/;
                                            my $role_output;  
                                            foreach my $role (@{$content->{'roles'}{$id}{$item}}) {
                                                if ($role eq 'all') {
                                                    $role_output .= $role.',';
                                                } elsif ($role =~ /^cr/) {
                                                    $role_output .= (split('/',$role))[3].',';
                                                } else {
                                                    $role_output .= &Apache::lonnet::plaintext($role,$ucscope).',';
                                                }
                                            }
                                            $role_output =~ s/,$//;
                                            $r->print($role_output);  
                                        } else {
                                            $r->print(join(',',@{$content->{'roles'}{$id}{$item}}));
                                        }
                                        $r->print('</td>');
                                    }
                                }
                                $r->print(&Apache::loncommon::end_data_table_row());
                                $r->print(&Apache::loncommon::end_data_table());
                            } elsif ($scope eq 'domains') {
                                $r->print(&mt('Domains: ').join(',',@{$content->{'dom'}}));
                            } elsif ($scope eq 'users') {
                                my $curr_user_list = &sort_users($content->{'users'});
                                $r->print(&mt('Users: ').$curr_user_list);
                            } else {
                                $r->print('&nbsp;');
                            }
                        } else {
                            $r->print('&nbsp;');
                        }
                        $r->print('</td>');
                        $r->print(&Apache::loncommon::end_data_table_row());
                        $count ++;
                    }
                }
            }
            $r->print(&Apache::loncommon::end_data_table());
        } else {
            if ((@{$processing{'activate'}} > 0) || (@{$processing{'update'}} > 0)) {
                $errors .= '<span class="LC_error">'.
		    &mt('A problem occurred storing access control settings: [_1]',$outcome).
		    '</span>';
            }
        }
        if ($errors) { 
            $r->print($errors);
        }
    }
    my $allnew = 0;
    my $totalnew = 0;
    my $status = 'new';
    my ($firstitem,$lastitem);
    foreach my $newitem ('course','group','domains','users') {
        $allnew += $env{'form.new'.$newitem};
    }
    if ($allnew > 0) {
        my $now = time;
        my $then = $now + (60*60*24*180); # six months approx.
        &open_form($r,$url,$group);
        foreach my $newitem ('course','group','domains','users') {
            if ($env{'form.new'.$newitem} > 0) {
                $r->print('<br />'.&mt('Add new <b>[_1]-based</b> access control for portfolio file: <b>[_2]</b>',$newitem,$env{'form.currentpath'}.$env{'form.selectfile'}).'<br /><br />');
                $firstitem = $totalnew;
                $lastitem = $totalnew + $env{'form.new'.$newitem};
                $totalnew = $lastitem;
                my @numbers;   
                for (my $i=$firstitem; $i<$lastitem; $i++) {
                    push (@numbers,$i);
                }
                &display_access_row($r,$status,$newitem,\@numbers,
                                    $access_controls{$file_name},$now,$then);
            }
        }
        &close_form($r,$url,$group);
    } else {
        $r->print('<br /><a href="'.$url.'?access='.$env{'form.selectfile'}.
                  '&amp;currentpath='.$env{'form.currentpath'}.'">'.
                   &mt('Display all access settings for this file').'</a>');
    }
    return;
}

sub build_access_record {
    my ($num,$scope,$start,$end,$chg) = @_;
    my $record = {
	type => $scope,
	time => {
	    start => $start,
	    end   => $end
	    },
	    };
		
    if ($scope eq 'guest') {	
        $record->{'password'} = $env{'form.password'};
    } elsif (($scope eq 'course') || ($scope eq 'group')) {
        $record->{'domain'} = $env{'form.crsdom_'.$num};
	$record->{'number'} = $env{'form.crsnum_'.$num};
        my @role_ids;
        my @delete_role_ids =
            &Apache::loncommon::get_env_multiple('form.delete_role_'.$num);
	my @preserves =
	    &Apache::loncommon::get_env_multiple('form.preserve_role_'.$num);
	if (@delete_role_ids) {
	    foreach my $id (@preserves) {
		if (grep {$_ = $id} (@delete_role_ids)) {
		    next;
		}
		push(@role_ids,$id); 
	    }
	} else {
	    push(@role_ids,@preserves);
	}

	my $next_id = $env{'form.add_role_'.$num};
	if ($next_id) {
	    push(@role_ids,$next_id);
	}

        foreach my $id (@role_ids) {
            my (@roles,@accesses,@sections,@groups);
            if (($id == $next_id) && ($chg eq 'update')) {
                @roles    = split(/,/,$env{'form.role_'.$num.'_'.$next_id});
                @accesses = split(/,/,$env{'form.access_'.$num.'_'.$next_id});
                @sections = split(/,/,$env{'form.section_'.$num.'_'.$next_id});
                @groups   = split(/,/,$env{'form.group_'.$num.'_'.$next_id});
            } else {
                @roles = &Apache::loncommon::get_env_multiple('form.role_'.$num.'_'.$id);
                @accesses = &Apache::loncommon::get_env_multiple('form.access_'.$num.'_'.$id);
                @sections = &Apache::loncommon::get_env_multiple('form.section_'.$num.'_'.$id);
                @groups = &Apache::loncommon::get_env_multiple('form.group_'.$num.'_'.$id);
            }
	    $record->{'roles'}{$id}{'role'}    = \@roles;
	    $record->{'roles'}{$id}{'access'}  = \@accesses;
	    $record->{'roles'}{$id}{'section'} = \@sections;
	    $record->{'roles'}{$id}{'group'}   = \@groups;
        }
    } elsif ($scope eq 'domains') {
        my @doms = &Apache::loncommon::get_env_multiple('form.dom_'.$num);
	$record->{'dom'} = \@doms;
    } elsif ($scope eq 'users') {
        my $userlist = $env{'form.users_'.$num};
        $userlist =~ s/\s+//sg;
	my %userhash = map { ($_,1) } (split(/,/,$userlist));
        foreach my $user (keys(%userhash)) {
            my ($uname,$udom) = split(/:/,$user);
	    push(@{$record->{'users'}}, {
		'uname' => $uname,
		'udom'  => $udom
		});
	}
    }
    return $record;
}

sub get_dates_from_form {
    my ($id) = @_;
    my $startdate;
    my $enddate;
    $startdate = &Apache::lonhtmlcommon::get_date_from_form('startdate_'.$id);
    $enddate   = &Apache::lonhtmlcommon::get_date_from_form('enddate_'.$id);
    if ( exists ($env{'form.noend_'.$id}) ) {
        $enddate = 0;
    }
    return ($startdate,$enddate);
}

sub sort_users {
    my ($users) = @_; 
    my @curr_users = map {
	$_->{'uname'}.':'.$_->{'udom'}
    } (@{$users});
    my $curr_user_list = join(",\n",sort(@curr_users));
    return $curr_user_list;
}

sub access_setting_table {
    my ($r,$access_controls) = @_;
    my ($public,$publictext);
    $publictext = &mt('Off');
    my ($guest,$guesttext);
    $guesttext = &mt('Off');
    my @courses = ();
    my @groups = ();
    my @domains = ();
    my @users = ();
    my $now = time;
    my $then = $now + (60*60*24*180); # six months approx.
    my ($num,$scope,$publicnum,$guestnum);
    my (%acl_count,%end,%start);
    foreach my $key (sort(keys(%{$access_controls}))) {
        ($num,$scope,$end{$key},$start{$key}) = &unpack_acc_key($key);
        if ($scope eq 'public') {
            $public = $key;
            $publicnum = $num;
            $publictext = &acl_status($start{$key},$end{$key},$now);
        } elsif ($scope eq 'guest') {
            $guest=$key;
            $guestnum = $num;  
            $guesttext = &acl_status($start{$key},$end{$key},$now);
        } elsif ($scope eq 'course') {
            push(@courses,$key);
        } elsif ($scope eq 'group') {
            push(@groups,$key);
        } elsif ($scope eq 'domains') {
            push(@domains,$key);
        } elsif ($scope eq 'users') {
            push(@users,$key);
        }
        $acl_count{$scope} ++;
    }
    $r->print('<table border="0"><tr><td valign="top">');
    $r->print('<h3>'.&mt('Public access:').' '.$publictext.'</h3>');
    $r->print(&Apache::loncommon::start_data_table());
    $r->print(&Apache::loncommon::start_data_table_header_row());
    $r->print('<th>'.&mt('Action').'</th><th>'.&mt('Dates available').'</th>');
    $r->print(&Apache::loncommon::end_data_table_header_row());
    $r->print(&Apache::loncommon::start_data_table_row());
    if ($public) {
        $r->print('<td>'.&actionbox('old',$publicnum,'public').'</td><td>'.
                  &dateboxes($publicnum,$start{$public},$end{$public}).'</td>');
    } else {
        $r->print('<td>'.&actionbox('new','0','public').'</td><td>'.
                  &dateboxes('0',$now,$then).'</td>');
    }
    $r->print(&Apache::loncommon::end_data_table_row());
    $r->print(&Apache::loncommon::end_data_table());
    $r->print('</td><td width="40">&nbsp;</td><td valign="top">');
    $r->print('<h3>'.&mt('Password-protected access:').' '.$guesttext.'</h3>');
    $r->print(&Apache::loncommon::start_data_table());
    $r->print(&Apache::loncommon::start_data_table_header_row());
    $r->print('<th>'.&mt('Action').'</th><th>'.&mt('Dates available').
              '</th><th>'. &mt('Password').'</th>');
    $r->print(&Apache::loncommon::end_data_table_header_row());
    $r->print(&Apache::loncommon::start_data_table_row());
    my $passwd;
    if ($guest) {
        $passwd = $$access_controls{$guest}{'password'};
        $r->print('<td>'.&actionbox('old',$guestnum,'guest').'</td><td>'.
                  &dateboxes($guestnum,$start{$guest},$end{$guest}).'</td>');
    } else {
        $r->print('<td>'.&actionbox('new','1','guest').'</td><td>'.
                  &dateboxes('1',$now,$then).'</td>');
    }
    $r->print('<td><input type="text" size="15" name="password" value="'.
              $passwd.'" /></td>');
    $r->print(&Apache::loncommon::end_data_table_row());
    $r->print(&Apache::loncommon::end_data_table());
    $r->print('</td></tr><tr><td colspan="3">&nbsp;</td></tr><tr><td valign="top">');
    &access_element($r,'domains',\%acl_count,\@domains,$access_controls,$now,$then);
    $r->print('</td><td>&nbsp;</td><td valign="top">');
    &access_element($r,'users',\%acl_count,\@users,$access_controls,$now,$then);
    $r->print('</td></tr><tr><td colspan="3"></td></tr><tr>');
    if (@courses > 0 || @groups > 0) {
        $r->print('<td colspan="3" valign="top">');
    } else {
        $r->print('<td valign="top">');
    }
    &access_element($r,'course',\%acl_count,\@courses,$access_controls,$now,$then);
    $r->print('</td>');
    if (@courses > 0 || @groups > 0) {
        $r->print('</tr><tr><td colspan="3">&nbsp;</td></tr><tr><td colspan="3" valign="top">');
    } else {
        $r->print('<td>&nbsp;</td><td valign="top">');
    }
    &access_element($r,'group',\%acl_count,\@groups,$access_controls,$now,$then);
    $r->print('</td></tr></table>');
}

sub acl_status {
    my ($start,$end,$now) = @_;
    if ($start > $now) {
        return &mt('Inactive');
    }
    if ($end && $end<$now) {
        return &mt('Inactive');
    }
    return &mt('Active');
}

sub access_element {
    my ($r,$type,$acl_count,$items,$access_controls,$now,$then) = @_;
    my $title = $type;
    $title =~ s/s$//;
    $title =~ s/^(\w)/uc($1)/e;
    $r->print('<h3>'.&mt('[_1]-based conditional access: ',$title));
    if ($$acl_count{$type}) {
        $r->print($$acl_count{$type}.' ');
        if ($$acl_count{$type} > 1) {
            $r->print(&mt('conditions'));
        } else {
            $r->print(&mt('condition'));
        }
    } else {
        $r->print(&mt('Off'));
    }
    $r->print('</h3>');
    &display_access_row($r,'old',$type,$items,$access_controls,$now,$then);
    return;
}

sub display_access_row {
    my ($r,$status,$type,$items,$access_controls,$now,$then) = @_;
    if (@{$items} > 0) {
        my @all_doms;
        my $tablecolor;
        my $colspan = 3;
        my $uctype = $type;
        $uctype =~ s/^(\w)/uc($1)/e;
        $r->print(&Apache::loncommon::start_data_table());
        $r->print(&Apache::loncommon::start_data_table_header_row());
        $r->print('<th>'.&mt('Action?').'</th><th>'.&mt($uctype).'</th><th>'.
              &mt('Dates available').'</th>');
        if (($type eq 'course') || ($type eq 'group')) {
            $r->print('<th>'.&mt('Allowed [_1] member affiliations',$type).
                      '</th>');
            $colspan ++;
            my $function = &Apache::loncommon::get_users_function();
            $tablecolor=&Apache::loncommon::designparm($function.'.tabbg');
        } elsif ($type eq 'domains') {
            @all_doms = &Apache::loncommon::get_domains();
        }
        $r->print(&Apache::loncommon::end_data_table_header_row());
	$r->print(&Apache::loncommon::start_data_table_row());
        foreach my $key (@{$items}) {
            if (($type eq 'course') || ($type eq 'group')) {
                &course_row($r,$status,$type,$key,$access_controls,
                            $tablecolor,$now,$then);
            } elsif ($type eq 'domains') {
                &domains_row($r,$status,$key,\@all_doms,$access_controls,$now,
                            $then);
            } elsif ($type eq 'users') {
                &users_row($r,$status,$key,$access_controls,$now,$then);
            }
        }
        $r->print(&Apache::loncommon::end_data_table_row());
        if ($status eq 'old') {
	    $r->print(&Apache::loncommon::start_data_table_row());
            $r->print('<td colspan="',$colspan.'">'.&additional_item($type).
                      '</td>');
	    $r->print(&Apache::loncommon::end_data_table_row());
        }
        $r->print(&Apache::loncommon::end_data_table());
    } else {
        $r->print(&mt('No [_1]-based conditions defined.<br />',$type).
                  &additional_item($type));
    }
    return;
}

sub course_js {
    return qq|
<script type="text/javascript">
function setRoleOptions(caller,num,cdom,cnum,type) {
    addIndexnum = getCallerIndex(caller);
    updateIndexnum = getIndex('update',num);
    if (caller.checked) {
        document.portform.elements[updateIndexnum].checked = true;
        var url = '/adm/portfolio?action=rolepicker&setroles='+addIndexnum+'&cnum='+cnum+'&cdom='+cdom+'&type='+type;
        var title = 'Roles_Chooser';
        var options = 'scrollbars=1,resizable=1,menubar=0';
        options += ',width=700,height=600';
        rolebrowser = open(url,title,options,'1');
        rolebrowser.focus();
    } else {
        for (var j=0;j<5;j++) {
            document.portform.elements[addIndexnum+j].value = '';
        }
    }
}

function getCallerIndex(caller) {
    for (var i=0;i<document.portform.elements.length;i++) {
        if (document.portform.elements[i] == caller) {
            return i;
        }
    }
    return -1;
}

function getIndex(name,value) {
    for (var i=0;i<document.portform.elements.length;i++) {
        if (document.portform.elements[i].name == name && document.portform.elements[i].value == value) {
            return i;
        }
    }
    return -1;
}

</script>
|;
}

sub course_row {
    my ($r,$status,$type,$item,$access_controls,$tablecolor,$now,$then) = @_;
    my $content;
    my $defdom = $env{'user.domain'};
    if ($status eq 'old') {
        $content = $$access_controls{$item}; 
        $defdom =  $content->{'domain'};
    }
    my $js = &Apache::loncommon::coursebrowser_javascript($defdom)
	.&course_js();
    my $crsgrptext = 'Groups';
    if ($type eq 'group') {
        $crsgrptext = 'Teams';
    }
    my ($num,$scope,$end,$start) = &set_identifiers($status,$item,$now,$then,
                                                    $type);
    $r->print('<td>'.$js.&actionbox($status,$num,$scope).'</td>');
    if ($status eq 'old') {
        my $cid = $content->{'domain'}.'_'.$content->{'number'};
        my %course_description = &Apache::lonnet::coursedescription($cid);
        $r->print('<td><input type="hidden" name="crsdom_'.$num.'" value="'.$content->{'domain'}.'" /><input type="hidden" name="crsnum_'.$num.'" value="'.$content->{'number'}.'" />'.$course_description{'description'}.'</td>');
    } elsif ($status eq 'new') {
        my $uctype = $type;
        $uctype =~ s/^(\w)/uc($1)/e;
        $r->print('<td>'.&Apache::loncommon::selectcourse_link('portform','crsnum_'.$num,'crsdom_'.$num,'description_'.$num,undef,undef,$uctype).'&nbsp;&nbsp;<input type="text" name="description_'.$num.'" size="30" /><input type="hidden" name="crsdom_'.$num.'" /><input type="hidden" name="crsnum_'.$num.'" /></td>');
    }
    $r->print('<td>'.&dateboxes($num,$start,$end).'</td>');
    $r->print('<td><table border="0"><tr bgcolor="'.$tablecolor.'">');
    $r->print('<th>'.&mt('Action').'</th><th>'.&mt('Roles').'</th><th>'.
              &mt('Access').'</th><th>'.&mt('Sections').'</th><th>'.
              &mt($crsgrptext).'</th></tr>');
    if ($status eq 'old') {
        my $max_id = 0;
        foreach my $role_id (sort(keys(%{$content->{'roles'}}))) {
            if ($role_id > $max_id) {
                $max_id = $role_id;
            }
            $max_id ++;
            my $role_selects = &role_selectors($num,$role_id,$status,$type,$content,'display');
            $r->print('<tr><td><span style="white-space: nowrap"><label><input type="checkbox" name="delete_role_'.$num.'" value="'.$role_id.'" />'.&mt('Delete').'</label></span><br /><input type="hidden" name="preserve_role_'.$num.'" value="'.$role_id.'" /></td>'.$role_selects.'</tr>');
        }
        $r->print('</table><br />'.&mt('Add a roles-based condition').'&nbsp;<input type="checkbox" name ="add_role_'.$num.'" onClick="javascript:setRoleOptions(this,'."'$num','$content->{'domain'}','$content->{'number'}','Course'".')" value="'.$max_id.'" /><input type="hidden" name="role_'.$num.'_'.$max_id.'" /><input type="hidden" name="access_'.$num.'_'.$max_id.'" /><input type="hidden" name="section_'.$num.'_'.$max_id.'" /><input type="hidden" name="group_'.$num.'_'.$max_id.'" /></td>');
    } elsif ($status eq 'new') {
        my $role_id = 1;
        my $role_selects = &role_selectors($num,$role_id,$status,$type,undef,'display');
        $r->print('<tr><td><input type="checkbox" name="add_role_'.$num.'" value="'.$role_id.'" checked="checked" />'.&mt('Add').'<input type="hidden" name="grplist_'.$num.'_'.$role_id.'" /></td>'.$role_selects);
        $r->print('</tr></table></td>');
    }
    return;
}

sub domains_row {
    my ($r,$status,$item,$all_doms,$access_controls,$now,$then) = @_;
    my ($num,$scope,$end,$start) = &set_identifiers($status,$item,$now,$then,
                                                    'domains');
    my $dom_select = '<select name="dom_'.$num.'" size="4" multiple="true">'.
                     ' <option value="">'.&mt('Please select').'</option>';
    if ($status eq 'old') {
        my $content =  $$access_controls{$item};
	foreach my $dom (@{$all_doms}) {
            if ((@{$content->{'dom'}} > 0) 
		&& (grep(/^\Q$dom\E$/,@{$content->{'dom'}}))) {
                $dom_select .= '<option value="'.$dom.'" selected>'.
                               $dom.'</option>';
            } else {
                $dom_select .= '<option value="'.$dom.'">'.$dom.'</option>';
            }
        }
    } else {
        foreach my $dom (@{$all_doms}) {
            $dom_select .= '<option value="'.$dom.'">'.$dom.'</option>';
        }
    }
    $dom_select .= '</select>';
    $r->print('<td>'.&actionbox($status,$num,$scope).'</td><td>'.$dom_select.
              '</td><td>'.&dateboxes($num,$start,$end).'</td>');
}

sub users_row {
    my ($r,$status,$item,$access_controls,$now,$then) = @_;
    my ($num,$scope,$end,$start) = &set_identifiers($status,$item,$now,$then,
                                                    'users');
    my $curr_user_list;
    if ($status eq 'old') {
        my $content = $$access_controls{$item};
        $curr_user_list = &sort_users($content->{'users'});
    }
    $r->print('<td>'.&actionbox($status,$num,$scope).'</td><td>'.&mt("Format for users' username:domain information:").'<br /><tt>sparty:msu,illini:uiuc  ... etc.</tt><br /><textarea name="users_'.$num.'" cols="30"  rows="5">'.$curr_user_list.'</textarea></td><td>'.&dateboxes($num,$start,$end).'</td>');
}

sub additional_item {
    my ($type) = @_;
    my $output = &mt('Add new [_1] condition(s)?',$type).'&nbsp;'.&mt('Number to add: ').'<input type="text" name="new'.$type.'" size="3" value="0" />';
    return $output;
}

sub actionbox {
    my ($status,$num,$scope) = @_;
    my $output = '<span style="white-space: nowrap"><label>';
    if ($status eq 'new') {
        $output .= '<input type="checkbox" name="activate" value="'.$num.'" />'.
        &mt('Activate');
    } else {
        $output .= '<input type="checkbox" name="delete" value="'.$num.
                   '" />'.&mt('Delete').'</label></span><br /><span style="white-space: nowrap">'.
                   '<label><input type="checkbox" name="update" value="'.
                   $num.'" />'.&mt('Update');
    }
    $output .= '</label></span><input type="hidden" name="scope_'.$num.                '" value="'.$scope.'" />';
    return $output;
}
                                                                                   
sub dateboxes {
    my ($num,$start,$end) = @_;
    my $noend;
    if ($end == 0) {
        $noend = 'checked="checked"';
    }
    my $startdate = &Apache::lonhtmlcommon::date_setter('portform',
                           'startdate_'.$num,$start,undef,undef,undef,1,undef,
                            undef,undef,1);
    my $enddate = &Apache::lonhtmlcommon::date_setter('portform',
                               'enddate_'.$num,$end,undef,undef,undef,1,undef,
                                undef,undef,1). '&nbsp;&nbsp;<span style="white-space: nowrap"><label>'.
                                '<input type="checkbox" name="noend_'.
                                $num.'" '.$noend.' />'.&mt('No end date').
                                '</label></span>';
                                                                                   
    my $output = &mt('Start: ').$startdate.'<br />'.&mt('End: ').$enddate;
    return $output;
}

sub unpack_acc_key {
    my ($acc_key) = @_;
    my ($num,$scope,$end,$start) = ($acc_key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
    return ($num,$scope,$end,$start);
}

sub set_identifiers {
    my ($status,$item,$now,$then,$scope) = @_;
    if ($status eq 'old') {
        return(&unpack_acc_key($item));
    } else {
        return($item,$scope,$then,$now);
    }
} 

sub role_selectors {
    my ($num,$role_id,$status,$type,$content,$caller) = @_;
    my ($output,$cdom,$cnum,$longid);
    if ($caller eq 'display') {
        $longid = '_'.$num.'_'.$role_id;
        if ($status eq 'new') {
            foreach my $item ('role','access','section','group') {
                $output .= '<td><select name="'.$item.$longid.'">'.
                           '<option value="">'.&mt('Pick [_1] first',$type).
                           '</option></select></td>';
            }
            return $output;
        } else {
            $cdom = $$content{'domain'};
            $cnum = $$content{'number'};
        }
    } elsif ($caller eq 'rolepicker') {
         $cdom = $env{'form.cdom'};
         $cnum = $env{'form.cnum'};
    }
    my ($sections,$groups,$allroles,$rolehash,$accesshash) =
            &Apache::loncommon::get_secgrprole_info($cdom,$cnum,1,$type);
    if (!@{$sections}) {
        @{$sections} = ('none');
    } else {
        unshift(@{$sections},('all','none'));
    }
    if (!@{$groups}) {
        @{$groups} = ('none');
    } else {
        unshift(@{$groups},('all','none'));
    }
    my @allacesses = sort(keys(%{$accesshash}));
    my (%sectionhash,%grouphash);
    foreach my $sec (@{$sections}) {
        $sectionhash{$sec} = $sec;
    }
    foreach my $grp (@{$groups}) {
        $grouphash{$grp} = $grp;
    }
    my %lookup = (
                   'role' => $rolehash,
                   'access' => $accesshash,
                   'section' => \%sectionhash,
                   'group' => \%grouphash,
                 );
    my @allaccesses = sort(keys(%{$accesshash}));
    my %allitems = (
                    'role' => $allroles,
                    'access' => \@allaccesses,
                    'section' => $sections,
                    'group' => $groups, 
                   );
    foreach my $item ('role','access','section','group') {
        $output .= '<td><select name="'.$item.$longid.'" multiple="true" size="4">'."\n";
        foreach my $entry (@{$allitems{$item}}) {
            if ($caller eq 'display') {
                if ((@{$$content{'roles'}{$role_id}{$item}} > 0) && 
                    (grep(/^\Q$entry\E$/,@{$$content{'roles'}{$role_id}{$item}}))) {
                    $output .= '  <option value="'.$entry.'" selected>'.
                                  $lookup{$item}{$entry}.'</option>';
                    next;
                }
            }
            $output .= '  <option value="'.$entry.'">'.
                       $lookup{$item}{$entry}.'</option>';
        }
        $output .= '</select>';
    }
    $output .= '</td>';
    return $output;
}

sub role_options_window {
    my ($r) = @_;
    my $cdom = $env{'form.cdom'};
    my $cnum = $env{'form.cnum'};
    my $type = $env{'form.type'};
    my $addindex = $env{'form.setroles'};
    my $role_selects = &role_selectors(1,1,'new',$type,undef,'rolepicker');
    $r->print(<<"END_SCRIPT");
<script type="text/javascript">
function setRoles() {
    var addidx = $addindex+1;
    for (var i=0; i<4; i++) {
        var copylist = '';
        for (var j=0; j<document.rolepicker.elements[i].length; j++) {
            if (document.rolepicker.elements[i].options[j].selected) {
                copylist = copylist + document.rolepicker.elements[i].options[j].value + ',';
            }
        }
        copylist = copylist.substr(0,copylist.length-1);
        opener.document.portform.elements[addidx+i].value = copylist;
    }
    self.close();
}
</script>
END_SCRIPT
    $r->print(&mt('Select roles, course status, section(s) and group(s) for users who will be able to access the portfolio file.'));
    $r->print('<form name="rolepicker" action="/adm/portfolio" method="post"><table><tr><th>'.&mt('Roles').'</th><th>'.&mt('[_1] status',$type).'</th><th>'.&mt('Sections').'</th><th>'.&mt('Groups').'</th></tr><tr>'.$role_selects.'</tr></table><br /><input type="button" name="rolepickbutton" value="Save selections" onclick="setRoles()" />');
    return;
}

sub select_files {
    my ($r,$group) = @_;
    if ($env{'form.continue'} eq 'true') {
        # here we update the selections for the currentpath
        # eventually, have to handle removing those not checked, but . . . 
        my @items=&Apache::loncommon::get_env_multiple('form.checkfile');
        if (scalar(@items)){
             &Apache::lonnet::save_selected_files($env{'user.name'}, $env{'form.currentpath'}, @items);
        }
    } else {
            #empty the file for a fresh start
            &Apache::lonnet::clear_selected_files($env{'user.name'});
    }
    my @files = &Apache::lonnet::files_not_in_path($env{'user.name'}, $env{'form.currentpath'});
    my $java_files = join ",", @files;
    if ($java_files) {
        $java_files.=',';
    }
    my $javascript =(<<ENDSMP);
        <script type="text/javascript">
        function finishSelect() {
ENDSMP
    $javascript .= 'fileList = "'.$java_files.'";';
    $javascript .= (<<ENDSMP);
            for (i=0;i<document.forms.checkselect.length;i++) { 
                if (document.forms.checkselect[i].checked){
                    fileList = fileList + document.forms.checkselect.currentpath.value + document.forms.checkselect[i].value + "," ;
                }
            }
            opener.document.forms.lonhomework.
ENDSMP
    $javascript .= $env{'form.fieldname'};
    $javascript .= (<<ENDSMP);
        .value=fileList;
            self.close();
        }
        </script>
ENDSMP
    $r->print($javascript);
    $r->print("<h1>Select portfolio files</h1>
                Check as many as you wish in response to the problem.<br />");
    my @otherfiles=&Apache::lonnet::files_not_in_path($env{'user.name'}, $env{'form.currentpath'});
    if (@otherfiles) {
	$r->print("<strong>Files selected from other directories:</strong><br />");
	foreach my $file (@otherfiles) {
	    $r->print($file."<br />");
	}
    }
}
sub upload {
    my ($r,$url,$group)=@_;
    my $fname=$env{'form.uploaddoc.filename'};
    my $filesize = (length($env{'form.uploaddoc'})) / 1000; #express in k (1024?)
    my $disk_quota = 20000; # expressed in k
    $fname=&Apache::lonnet::clean_filename($fname);

    my $portfolio_root=&get_portfolio_root($group);
    my ($uname,$udom) = &get_name_dom($group);
    my $port_path = &get_port_path($group);
    # Fixme --- Move the checking for existing file to LOND error return
    my @dir_list=&get_dir_list($portfolio_root,$group);
    my $found_file = 0;
    my $locked_file = 0;
    foreach my $line (@dir_list) {
        my ($file_name)=split(/\&/,$line,2);
        if ($file_name eq $fname){
            $file_name = $env{'form.currentpath'}.$file_name;
            $file_name = &prepend_group($file_name,$group);
            $found_file = 1;
            if (defined($group)) {
                $file_name = $group.'/'.$file_name;
            }
            if (&Apache::lonnet::is_locked($file_name,$udom,$uname) eq 'true') {
                $locked_file = 1;
            } 
        }
    }
    my $current_disk_usage = &Apache::lonnet::diskusage($udom,$uname,$portfolio_root);
    if (($current_disk_usage + $filesize) > $disk_quota){
        $r->print('<span class="LC_error">Unable to upload <strong>'.$fname.' (size = '.$filesize.' kilobytes)</strong>. Disk quota will be exceeded.</span>'.
                  '<br />Disk quota is '.$disk_quota.' kilobytes. Your current disk usage is '.$current_disk_usage.' kilobytes.');
        $r->print(&done('Back',$url,$group));
    } 
    elsif ($found_file){
        if ($locked_file){
            $r->print('<span class="LC_error">'.'Unable to upload <strong>'.$fname.'</strong>, a <strong>locked</strong> file by that name was found in <strong>'.$port_path.$env{'form.currentpath'}.'</strong></span>'.
                  '<br />You will be able to rename or delete existing '.$fname.' after a grade has been assigned.');
            $r->print(&done('Back',$url,$group));      
        } else {   
            $r->print('<span class="LC_error">'.'Unable to upload <strong>'.$fname.'</strong>, a file by that name was found in <strong>'.$port_path.$env{'form.currentpath'}.'</strong></span>'.
                  '<br />To upload, rename or delete existing '.$fname.' in '.$port_path.$env{'form.currentpath'});
            $r->print(&done('Back',$url,$group));
        }
    } else {
        my $result=&Apache::lonnet::userfileupload('uploaddoc','',
	        	 $port_path.$env{'form.currentpath'});
        if ($result !~ m|^/uploaded/|) {
            $r->print('<span class="LC_error">'.'An errror occured ('.$result.
	              ') while trying to upload '.&display_file().'</span><br />');
	    $r->print(&done('Back',$url,$group));
        } else {
            $r->print(&done(undef,$url,$group));
        }
    }
}
sub lock_info {
    my ($r,$url,$group) = @_;
    my ($uname,$udom) = &get_name_dom($group);
    my $current_permissions = &Apache::lonnet::get_portfile_permissions($udom,
                                                                       $uname);
    my $file_name = $env{'form.lockinfo'};
    $file_name = &prepend_group($file_name,$group);
    if (defined($file_name) && defined($$current_permissions{$file_name})) {
        foreach my $array_item (@{$$current_permissions{$file_name}}) {
            if (ref($array_item) eq 'ARRAY') {
                my $filetext;
                if (defined($group)) {
                    $filetext = '<strong>'.$env{'form.lockinfo'}.
                                    '</strong> (group: '.$group.')'; 
                } else {
                    $filetext = '<strong>'.$file_name.'</strong>';
                } 
                $r->print(&mt('[_1] was submitted in response to problem: ',
                              $filetext).
                          '<strong>'.&Apache::lonnet::gettitle($$array_item[0]).
                          '</strong><br />');
                my %course_description = &Apache::lonnet::coursedescription($$array_item[1]);
                $r->print(&mt('In the course: <strong>[_1]</strong><br />',
                              $course_description{'description'}));
                # $r->print('the third is '.$$array_item[2].'<br>');
                # $r->print("item is $$array_item[0]<br> and $$array_item[0]");
            }
        }
    }
    $r->print(&done('Back',$url,$group));
    return 'ok';
}
sub createdir {
    my ($r,$url,$group)=@_;
    my $newdir=&Apache::lonnet::clean_filename($env{'form.newdir'});
    if ($newdir eq '') {
    	$r->print('<span class="LC_error">'.
	    	  &mt("Error: no directory name was provided.").
		      '</span><br />');
	    $r->print(&done(undef,$url,$group));
	    return;
    }
    my $portfolio_root = &get_portfolio_root($group); 
    my @dir_list=&get_dir_list($portfolio_root,$group);
    my $found_file = 0;
    foreach my $line (@dir_list) {
        my ($filename)=split(/\&/,$line,2);
        if ($filename eq $newdir){
            $found_file = 1;
        }
    }
    if ($found_file){
    	    $r->print('<span class="LC_error">'.'Unable to create a directory named <strong>'.$newdir.
    	            ' </strong>a file or directory by that name already exists.</span><br />');
    } else {
        my ($uname,$udom) = &get_name_dom($group);
        my $port_path = &get_port_path($group);
        my $result=&Apache::lonnet::mkdiruserfile($uname,$udom,
	         $port_path.$env{'form.currentpath'}.$newdir);
        if ($result ne 'ok') {
    	    $r->print('<span class="LC_error">'.'An errror occured ('.$result.
	    	      ') while trying to create a new directory '.&display_file().'</span><br />');
        }
    }
    if ($newdir ne $env{'form.newdir'}) {
        $r->print("The new directory name was changed from:<br /><strong>".$env{'form.newdir'}."</strong> to <strong>$newdir </strong>");  
    }
    $r->print(&done(undef,$url,$group));
}

sub get_portfolio_root {
    my ($group) = @_;
    my ($portfolio_root,$udom,$uname,$path);
    ($uname,$udom) = &get_name_dom($group);
    if (defined($group)) {
        $path = '/userfiles/groups/'.$group.'/portfolio';
    } else {
        $path = '/userfiles/portfolio';
    }
    return (&Apache::loncommon::propath($udom,$uname).$path);
}

sub get_dir_list {
    my ($portfolio_root,$group) = @_;
    my ($uname,$udom) = &get_name_dom($group);
    return &Apache::lonnet::dirlist($env{'form.currentpath'},
                                          $udom,$uname,$portfolio_root);
}

sub get_name_dom {
    my ($group) = @_;
    my ($uname,$udom);
    if (defined($group)) {
        $udom = $env{'course.'.$env{'request.course.id'}.'.domain'};
        $uname = $env{'course.'.$env{'request.course.id'}.'.num'};
    } else {
        $udom = $env{'user.domain'};
        $uname = $env{'user.name'};
    }
    return ($uname,$udom);
}

sub prepend_group {
    my ($filename,$group) = @_;
    if (defined($group)) {
        $filename = $group.'/'.$filename;
    }
    return $filename;
}

sub get_namespace {
    my ($group) = @_;
    my $namespace = 'portfolio';
    if (defined($group)) {
        my ($uname,$udom) = &get_name_dom($group);
        $namespace .= '_'.$udom.'_'.$uname.'_'.$group;
    }
    return $namespace;
}

sub get_port_path {
    my ($group) = @_;
    my $port_path;
    if (defined($group)) {
       $port_path = "groups/$group/portfolio";
    } else {
       $port_path = 'portfolio';
    }
    return $port_path;
}

sub handler {
    # this handles file management
    my $r = shift;
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
         ['selectfile','currentpath','meta','lockinfo','currentfile','action',
	  'fieldname','mode','rename','continue','group','access','setnum',
          'cnum','cdom','type','setroles']);
    my ($uname,$udom,$portfolio_root,$url,$group,$caller,$title);
    if ($r->uri =~ m|^(/adm/)([^/]+)|) {
        $url = $1.$2;
        $caller = $2;
    }
    if ($caller eq 'coursegrp_portfolio') {
    #  Needs to be in a course
        if (! ($env{'request.course.fn'})) {
        # Not in a course
            $env{'user.error.msg'}=
     "/adm/coursegrp_portfolio:rgf:0:0:Cannot view group portfolio";
            return HTTP_NOT_ACCEPTABLE;
        }
        my $earlyout = 0;
        my $view_permission = &Apache::lonnet::allowed('vcg',
                                                $env{'request.course.id'});
        $group = $env{'form.group'};
        $group =~ s/\W//g;
        if ($group) {
            ($uname,$udom) = &get_name_dom($group);
            my %curr_groups = &Apache::longroup::coursegroups($udom,$uname,
							       $group); 
            if (%curr_groups) {
                if (($view_permission) || (&Apache::lonnet::allowed('rgf',
                                      $env{'request.course.id'}.'/'.$group))) {
                    $portfolio_root = &get_portfolio_root($group);
                } else {
                    $r->print('You do not have the privileges required to access the shared files space for this group.');
                    $earlyout = 1;
                }
            } else {
                $r->print('Not a valid group for this course');
                $earlyout = 1;
            }
            $title = &mt('Group files').' for '.$group; 
        } else {
            $r->print('Invalid group');
            $earlyout = 1;
        }
        if ($earlyout) { return OK; }
    } else {
        ($uname,$udom) = &get_name_dom();
        $portfolio_root = &get_portfolio_root();
        $title = &mt('Portfolio Manager');
    }

    &Apache::loncommon::no_cache($r);
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    # Give the LON-CAPA page header
    if ($env{"form.mode"} eq 'selectfile'){
        $r->print(&Apache::loncommon::start_page($title,undef,
						 {'only_body' => 1}));
    } elsif ($env{'form.action'} eq 'rolepicker') {
        $r->print(&Apache::loncommon::start_page('New role-based condition',undef,
                                                 {'no_nav_bar'  => 1, }));
    } else {
        $r->print(&Apache::loncommon::start_page($title));
    }
    $r->rflush();
	if (($env{'form.storeupl'}) & (!$env{'form.uploaddoc.filename'})){
   	    $r->print('<span class="LC_error">'.
		      'No file was selected to upload.'.
		      'To upload a file, click <strong>Browse...</strong>'.
		      ', select a file, then click <strong>Upload</strong>.'.
		      '</span>');
	}
    if ($env{'form.meta'}) {
        &open_form($r,$url);
#        $r->print(&edit_meta_data($r, $env{'form.currentpath'}.$env{'form.selectfile'}));
        $r->print('Edit the meta data<br />');
        &close_form($r,$url,$group);
    }
    if ($env{'form.store'}) {
    }

    if ($env{'form.uploaddoc.filename'}) {
	&upload($r,$url,$group);
    } elsif ($env{'form.action'} eq 'delete' && $env{'form.confirmed'}) {
	&delete_confirmed($r,$url,$group);
    } elsif ($env{'form.action'} eq 'delete') {
	&delete($r,$url,$group);
    } elsif ($env{'form.action'} eq 'deletedir' && $env{'form.confirmed'}) {
	&delete_dir_confirmed($r,$url,$group);
    } elsif ($env{'form.action'} eq 'deletedir'){
	&delete_dir($r,$url,$group);
    } elsif ($env{'form.action'} eq 'rename' && $env{'form.confirmed'}) {
	&rename_confirmed($r,$url,$group);
    } elsif ($env{'form.rename'}) {
        $env{'form.selectfile'} = $env{'form.rename'};
        $env{'form.action'} = 'rename';
	&rename($r,$url,$group);
    } elsif ($env{'form.access'}) {
        $env{'form.selectfile'} = $env{'form.access'};
        $env{'form.action'} = 'chgaccess';
        &display_access($r,$url,$group);
    } elsif ($env{'form.action'} eq 'chgaccess') {
        &update_access($r,$url,$group);
    } elsif ($env{'form.action'} eq 'rolepicker') {
        &role_options_window($r);
    } elsif ($env{'form.createdir'}) {
	&createdir($r,$url,$group);
    } elsif ($env{'form.lockinfo'}) {
        &lock_info($r,$url,$group);
    } else {
	my $current_path='/';
	if ($env{'form.currentpath'}) {
	    $current_path = $env{'form.currentpath'};
	}
        my @dir_list=&get_dir_list($portfolio_root,$group);
	if ($dir_list[0] eq 'no_such_dir'){
	    # two main reasons for this:
            #    1) never been here, so directory structure not created
	    #    2) back-button navigation after deleting a directory
	    if ($current_path eq '/'){
	        &Apache::lonnet::mkdiruserfile($uname,$udom,
					       &get_port_path($group));
	    } else {
                # some directory that snuck in get rid of the directory
                # from the recent pulldown, just in case
		&Apache::lonhtmlcommon::remove_recent('portfolio',
						      [$current_path]);
		$current_path = '/'; # force it back to the root        
	    }
	    # now grab the directory list again, for the first time
	    @dir_list=&Apache::lonnet::dirlist($current_path,
					    $udom,$uname,$portfolio_root);
        }
	# need to know if directory is empty so it can be removed if desired
	my $is_empty=(@dir_list == 2);
	&display_common($r,$url,$current_path,$is_empty,\@dir_list,$group);
        &display_directory($r,$url,$current_path,$is_empty,\@dir_list,$group);
	$r->print(&Apache::loncommon::end_page());
    }
    return OK;
}
1;
__END__