# The LearningOnline Network with CAPA
# Handler to set domain-wide configuration settings
#
# $Id: domainprefs.pm,v 1.2 2007/03/01 17:54:13 albertel 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/
#
#
###############################################################
##############################################################

package Apache::domainprefs;

use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet;
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::lonlocal;
use LONCAPA();

sub handler {
    my $r=shift;
    if ($r->header_only) {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
        return OK;
    }

    my $dom = $env{'request.role.domain'};
    my $domdesc = $Apache::lonnet::domaindescription{$dom};
    if (&Apache::lonnet::allowed('mau',$dom)) {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
    } else {
        $env{'user.error.msg'}=
        "/adm/domainprefs:mau:0:0:Cannot modify domain settings";
        return HTTP_NOT_ACCEPTABLE;
    }
    &Apache::lonhtmlcommon::clear_breadcrumbs();
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                            ['phase']);
    my $phase = $env{'form.phase'};
    if ($phase eq '' || $phase eq 'start') {
        &Apache::lonhtmlcommon::add_breadcrumb
        ({href=>"javascript:changePage(document.$phase,'start')",
          text=>"Choose an action"});
        &print_main_menu($r,$dom,$domdesc);
    } else {
        &Apache::lonhtmlcommon::add_breadcrumb
        ({href=>"javascript:changePage(document.$phase,'start')",
          text=>"Choose an action"});
        if ($phase eq 'login') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Configure Log-in page"});
            &print_login($r,$phase,$dom)
        } elsif ($phase eq 'configlogin') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'login')",
                text=>"Configure Log-in page"});
            &Apache::lonhtmlcommon::add_breadcrumb
                ({href=>"javascript:changePage(document.$phase,'$phase')",
                  text=>"Result"});
            &modify_login($r,$phase,$dom,$domdesc);
        } elsif ($phase eq 'quotas') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Default user quotas"});
            &print_quotas($r,$phase,$dom);
        } elsif ($phase eq 'configquotas') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'quotas')",
                text=>"Default user quotas"});
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Result"});
            &modify_quotas($r,$phase,$dom,$domdesc);
        } elsif ($phase eq 'autoenroll') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Configure Auto-enrollment"});
            &print_autoenroll($r,$phase,$dom);
        } elsif ($phase eq 'configenroll') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'autoenroll')",
                text=>"Configure Auto-enrollment"});
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Result"});
            &modify_autoenroll($r,$phase,$dom,$domdesc);
        } elsif ($phase eq 'autoupdate') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Configure Auto-update"});
            &print_autoupdate($r,$phase,$dom);
        } elsif ($phase eq 'configupdate') {
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'quotas')",
                text=>"Change settings"});
            &Apache::lonhtmlcommon::add_breadcrumb
              ({href=>"javascript:changePage(document.$phase,'$phase')",
                text=>"Result"});
            &modify_autoupdate($r,$phase,$dom,$domdesc);
        }
    }
    &print_footer($r);
}

sub print_main_menu {
    my ($r,$dom,$domdesc) = @_;
    my @menu =
        (
          { text => 'Log-in page options',
            help => 'Domain_Log-in_Page',
            phase => 'login',
            },
          { text => 'Default quotas for user portfolios',
            help => 'Default_User_Quota',
            phase => 'quotas',
            },
          { text => 'Auto-enrollment settings',
            help => 'Domain_Auto_Enrollment',
            phase => 'autoenroll',
            },
          { text => 'Auto-update settings',
            help => 'Domain_Auto_Update',
            phase => 'autoupdate',
          },
        );
    my $menu_html = '';
    foreach my $menu_item (@menu) {
        $menu_html.='<p>';
        $menu_html.='<font size="+1">';
        if (exists($menu_item->{'url'})) {
            $menu_html.=qq{<a href="$menu_item->{'url'}">};
        } else {
            $menu_html.=
                qq{<a href="/adm/domainprefs?phase=$menu_item->{'phase'}">};
        }
        $menu_html.= &mt($menu_item->{'text'}).'</a></font>';
        if (exists($menu_item->{'help'})) {
            $menu_html.=
                &Apache::loncommon::help_open_topic($menu_item->{'help'});
        }
        $menu_html.='</p>'.$/;
    }
    &print_header($r);
    $r->print($menu_html);
    return;
}

sub print_header {
    my ($r,$javascript_validations) = @_;
    my $phase = "start";
    if ( exists($env{'form.phase'}) ) {
        $phase = $env{'form.phase'};
    }
    my $js = qq|
<script type="text/javascript">
function changePage(formname,newphase) {
    formname.phase.value = newphase;
    if (newphase == 'processparms') {
        return;
    }
    formname.submit();
}
</script>
|;
    $r->print(&Apache::loncommon::start_page('View/Modify Domain Settings',
                                             $js));
    my $bread_text = "Domain Settings";
    $r->print(&Apache::lonhtmlcommon::breadcrumbs($bread_text));
    return;
}

sub print_footer {
    my ($r) = @_;
    $r->print('<br />'.&Apache::loncommon::end_page());
    return;
}

sub print_login { 
    my ($r,$phase,$dom) = @_;
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['login'],$dom);
    my $catalogon = ' checked="checked" ';
    my $catalogoff;
    my $adminmailon = ' ';
    my $adminmailoff = ' checked="checked" ';
    if (ref($domconfig{'login'}) eq 'HASH') {
        if ($domconfig{'login'}{'coursecatalog'} eq '0') {
            $catalogoff = $catalogon;
            $catalogon = ' ';
        }
        if ($domconfig{'login'}{'adminmail'} eq '1') {
            $adminmailon = $adminmailoff;
            $adminmailoff = ' ';
        }
    }
    &print_header($r);
    my $datatable=&Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row().
                  '<th>'.&mt('Item').'</th><th>'.&mt('Selection').'</th>'.
                  &Apache::loncommon::end_data_table_header_row().
                  &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt('Display Course Catalog link?').'</td>'.
                  '<td><nobr><input type="radio" name="coursecatalog"'.
                  $catalogon.' value="1" />'.&mt('Yes').'&nbsp;'.
                  '<input type="radio" name="coursecatalog"'.
                  $catalogoff.'value="0" />'.&mt('No').'</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt("Display Administrator's E-mail Address?").'</td>'.
                  '<td><nobr><input type="radio" name="adminmail"'.                          $adminmailon.' value="1" />'.&mt('Yes').'&nbsp;'.
                  '<input type="radio" name="adminmail"'.
                  $adminmailoff.'value="0" />'.&mt('No').'</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::start_data_table();
    &print_form($r,$datatable,$phase,'configlogin','Change'); 
}

sub modify_login {
    my ($r,$phase,$dom,$domdesc) = @_;
    my ($resulttext,%changes);
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['login'],$dom);
    my %title = ( coursecatalog => 'Display course catalog',
                  adminmail => 'Display administrator E-mail address');
    my @offon = ('off','on'); 
    my %loginhash =  (
                       login => { coursecatalog => $env{'form.coursecatalog'},
                                  adminmail => $env{'form.adminmail'},
                                }
                     );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%loginhash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (($domconfig{'login'}{'coursecatalog'} eq '0') && 
            ($env{'form.coursecatalog'} eq '1')) {
            $changes{'coursecatalog'} = 1;
        } elsif (($domconfig{'login'}{'coursecatalog'} eq '' || 
                 $domconfig{'login'}{'coursecatalog'} eq '1') && 
                 ($env{'form.coursecatalog'} eq '0')) {
            $changes{'coursecatalog'} = 1;
        }
        if (($domconfig{'login'}{'adminmail'} eq '1') && 
                ($env{'form.adminmail'} eq '0')) {
            $changes{'adminmail'} = 1;
        } elsif (($domconfig{'login'}{'adminmail'} eq '' ||
                 $domconfig{'login'}{'adminmail'} eq '0') &&
                 ($env{'form.adminmail'} eq '1')) {
            $changes{'adminmail'} = 1;
        }
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $item (sort(keys(%changes))) {
                $resulttext .= '<li>'.&mt("$title{$item} set to $offon[$env{'form.'.$item}]").'</li>';
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to log-in page settings');
        }
    } else {
        $resulttext = &mt('An error occurred: [_1]',$putresult);
    }
    &print_header($r);
    &print_form($r,$resulttext,$phase,'start','Back to actions menu');
}

sub print_quotas {
    my ($r,$phase,$dom) = @_;
    my %currquota;
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['quotas'],$dom);
    if (ref($domconfig{'quotas'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'quotas'}})) {
            $currquota{$key} = $domconfig{'quotas'}{$key};
        }
    }
    my $datatable=&Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row().
                  '<th>'.&mt('User type').'</th><th>'.&mt('Default quota').'</th>'.
                  &Apache::loncommon::end_data_table_header_row();
    my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
    my $othertitle = "All users";
    my @types;
    if (ref($order) eq 'ARRAY') {
        @types = @{$order};
    }
    if (@types == 0) {
        if (ref($usertypes) eq 'HASH') {
            @types = sort(keys(%{$usertypes}));
        }
    }
    if (@types > 0) {
        foreach my $type (@types) {
            if (defined($usertypes->{$type})) {
                $datatable .= &Apache::loncommon::start_data_table_row().
                              '<td>'.$usertypes->{$type}.'</td><td><nobr>'.
                              '<input type="text" name="quota_'.$type.
                              '" value="'.$currquota{$type}.
                              '" size="5" /> Mb</nobr></td>'; 
            }
        }
        $othertitle = "Other users";
    }
    my $defaultquota = '20';
    if (defined($currquota{'default'})) {
        $defaultquota = $currquota{'default'};
    }
    $datatable .= &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt($othertitle).'</td><td><nobr>'.
                  '<input type="text" name="default" value="'.
                  $defaultquota.'" size="5" /> Mb</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::end_data_table();
    &print_header($r);
    &print_form($r,$datatable,$phase,'configquotas','Change');
}

sub modify_quotas {
    my ($r,$phase,$dom,$domdesc) = @_;
    my ($resulttext,%changes);
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['quotas'],$dom);
    my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
    my %formhash;
    foreach my $key (keys(%env)) {
        if ($key =~ /^form\.quota_(.+)$/) {
            $formhash{$1} = $env{$key};
        }
    }
    if (ref($domconfig{'quotas'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'quotas'}})) {
            if (exists($formhash{$key})) {
                if ($formhash{$key} ne $domconfig{'quotas'}{$key}) {
                    $changes{$key} = 1;
                }
            } else {
                $formhash{$key} = $domconfig{'quotas'}{$key};
            }
        }
    }
    foreach my $key (keys(%formhash)) {
        if ($formhash{$key} ne '') {
            if (!exists($domconfig{$key})) {
                $changes{$key} = 1;
            }
        }
    }
    my %quotahash = (
                      quotas => {%formhash}, 
                    );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%quotahash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $item (sort(keys(%changes))) {
                $resulttext .= '<li>'.&mt('[_1] set to [_2] Mb',$usertypes->{$item},$formhash{$item}).'</li>';
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to default quotas');
        }
    } else {
        $resulttext = &mt('An error occurred: [_1]',$putresult);
    }
    &print_header($r);
    &print_form($r,$resulttext,$phase,'start','Back to actions menu');
}

sub print_autoenroll {
    my ($r,$phase,$dom) = @_;
    my %currautoenroll;
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['autoenroll'],$dom);
    if (ref($domconfig{'autoenroll'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autoenroll'}})) {
            $currautoenroll{$key} = $domconfig{'autoenroll'}{$key};
        }
    }
    my $autorun = &Apache::lonnet::auto_run(undef,$dom),
    my ($runon,$runoff);
    if (exists($currautoenroll{'run'})) {
        if ($currautoenroll{'run'} eq '0') {
            $runoff = ' checked="checked" ';
            $runon = ' ';
        } else {
            $runon = ' checked="checked" ';
            $runoff = ' ';
        }
    } else {
        if ($autorun) {
            $runon = ' checked="checked" ';
            $runoff = ' ';
        } else {
            $runoff = ' checked="checked" ';
            $runon = ' ';
        }
    }
    my $defdom = $dom;
    if (exists($currautoenroll{'sender_domain'})) {
        $defdom = $currautoenroll{'sender_domain'};
    }
    my $domform = &Apache::loncommon::select_dom_form($defdom,'sender_domain',1);
    my $datatable=&Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row().
                  '<th>'.&mt('Configuration setting').'</th><th>'.&mt('Value(s)').'</th>'.
                  &Apache::loncommon::end_data_table_header_row().
                  &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt('Auto-enrollment active?').'</td>'.                  '<td><nobr><input type="radio" name="autoenroll_run"'.
                  $runon.' value="1" />'.&mt('Yes').'&nbsp;'.
                  '<input type="radio" name="autoenroll_run"'.
                  $runoff.'value="0" />'.&mt('No').'</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt('Notification messages - sender').'</td><td><nobr>'.
                  &mt('username').':&nbsp;<input type="text" name="sender_uname" value="'.
                  $currautoenroll{'sender_uname'}.'" size="10" />&nbsp;&nbsp;'.&mt('domain').':&nbsp;'.$domform.'</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::end_data_table();
    &print_header($r);
    &print_form($r,$datatable,$phase,'configenroll','Change');
}

sub modify_autoenroll { 
    my ($r,$phase,$dom,$domdesc) = @_;
    my ($resulttext,%changes);
    my %currautoenroll;
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['autoenroll'],$dom);
    if (ref($domconfig{'autoenroll'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autoenroll'}})) {
            $currautoenroll{$key} = $domconfig{'autoenroll'}{$key};
        }
    }
    my $autorun = &Apache::lonnet::auto_run(undef,$dom),
    my %title = ( run => 'Auto-enrollment active',
                  sender => 'Sender for notification messages');
    my @offon = ('off','on');
    my %autoenrollhash =  (
                       autoenroll => { run => $env{'form.autoenroll_run'},
                                       sender_uname => $env{'form.sender_uname'},
                                       sender_domain => $env{'form.sender_domain'},

                                }
                     );
    my $putresult = &Apache::lonnet::put_dom('configuration',\%autoenrollhash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (exists($currautoenroll{'run'})) {
             if ($currautoenroll{'run'} ne $env{'form.autoenroll_run'}) {
                 $changes{'run'} = 1;
             }
        } elsif ($autorun) {
            if ($env{'form.autoenroll_run'} ne '1') {
                $changes{'run'} = 1;
            }
        }
        if (exists($currautoenroll{sender_uname})) {
            if ($currautoenroll{'sender_uname'} ne $env{'form.sender_uname'}) {
                $changes{'sender'} = 1;
            }
        } else {
            $changes{'sender'} = 1;
        }
        if (exists($currautoenroll{sender_domain})) {
            if ($currautoenroll{'sender_domain'} ne $env{'form.sender_domain'}) {
                $changes{'sender'} = 1;
            }
        } else {
            $changes{'sender'} = 1;
        }
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            if ($changes{'run'}) { 
                $resulttext .= '<li>'.&mt("$title{'run'} set to $offon[$env{'form.autoenroll_run'}]").'</li>';
            }
            if ($changes{'sender'}) {
                $resulttext .= '<li>'.&mt("$title{'sender'} set to [_1]",$env{'form.sender_uname'}.':'.$env{'form.sender_domain'}).'</li>';
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to auto-enrollment settings');
        }
    } else {
        $resulttext = &mt('An error occurred: [_1]',$putresult);
    }
    &print_header($r);
    &print_form($r,$resulttext,$phase,'start','Back to actions menu');
}

sub print_autoupdate {
    my ($r,$phase,$dom) = @_;
    my (%currautoupdate,$datatable);
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['autoupdate'],$dom);
    if (ref($domconfig{'autoupdate'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autoupdate'}})) {
            $currautoupdate{$key} = $domconfig{'autoupdate'}{$key};
        }
    }
    my $updateon = ' ';
    my $updateoff = ' checked="checked" ';
    if ($currautoupdate{'run'} eq '1') {
        $updateon = $updateoff;
        $updateoff = ' ';
    }
    my $classlistson = ' ';
    my $classlistsoff = ' checked="checked" ';
    if ($currautoupdate{'classlists'} eq '1') {
        $classlistson = $classlistsoff;
        $classlistsoff = ' ';
    }
    my %title = (
                   run => 'Auto-update enabled?',
                   classlists => 'Update information in classlists?',
                );
    $datatable = &Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row().
                  '<th>'.&mt('Setting').'</th><th>'.&mt('Value').'</th>'.
                  &Apache::loncommon::end_data_table_header_row().
                  &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt($title{'run'}).'</td>'.
                  '<td><nobr><input type="radio" name="autoupdate_run"'.
                  $updateon.' value="1" />'.&mt('Yes').'&nbsp;'.
                  '<input type="radio" name="autoupdate_run"'.
                  $updateoff.'value="0" />'.&mt('No').'</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt($title{'classlists'}).'</td>'.
                  '<td><nobr><input type="radio" name="classlists"'.
                  $classlistson.' value="1" />'.&mt('Yes').'&nbsp;'.
                  '<input type="radio" name="classlists"'.
                  $classlistsoff.'value="0" />'.&mt('No').'</nobr></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::end_data_table().'<br /><br />';
    my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
    my @types;
    if (ref($order) eq 'ARRAY') {
        @types = @{$order};
    }
    if (@types == 0) {
        if (ref($usertypes) eq 'HASH') {
            @types = sort(keys(%{$usertypes}));
        }
    }
    my $othertitle = &mt('All users');
    if (keys(%{$usertypes}) > 0) {
        $othertitle = &mt('Other users');
    }
    my @fields = ('lastname','firstname','middlename','gen','email','id');
    my $numinrow = 4;
    my %fieldtitles = &Apache::lonlocal::texthash ( 
                        id => 'Student/Employee ID',
                        email => 'E-mail address',
                        lastname => 'Last Name',
                        firstname => 'First Name',
                        middlename => 'Middle Name',
                        gen => 'Generation',
                      );
    $datatable .= &Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row().
                  '<th>'.&mt('User Population').'</th><th>'.&mt('Updateable user data').'</th>'.
                  &Apache::loncommon::end_data_table_header_row();
    if (@types > 0) {
        foreach my $type (@types) {
            if (defined($usertypes->{$type})) {
                $datatable .= &Apache::loncommon::start_data_table_row().
                              '<td>'.$usertypes->{$type}.'</td><td><table>';
                for (my $i=0; $i<@fields; $i++) {
                    my $rem = $i%($numinrow);
                    if ($rem == 0) {
                        if ($i > 0) {
                            $datatable .= '</tr>';
                        }
                        $datatable .= '<tr>';
                    }
                    my $check = ' ';
                    if (ref($currautoupdate{'fields'}) eq 'HASH') {
                        if (ref($currautoupdate{'fields'}{$type}) eq 'ARRAY') {  
                            if (grep(/^\Q$fields[$i]\E$/,@{$currautoupdate{'fields'}{$type}})) {
                                $check = ' checked="checked" ';
                            }
                        }
                    }
                    if ($i == @fields-1) {
                        my $colsleft = $numinrow - $rem;
                        if ($colsleft > 1) {
                            $datatable .= '<td colspan="'.$colsleft.'">';
                        } else {
                            $datatable .= '<td>'; 
                        }
                    } else {
                        $datatable .= '<td>';
                    }
                    $datatable .= '<nobr><input type="checkbox" name="updateable_'.
                                  $type.'_'.$fields[$i].'" '.
                                  '" value="1"'.$check.'/>'.
                                  $fieldtitles{$fields[$i]}.'</nobr></td>';
                }
                $datatable .= '</tr></table></td>'.&Apache::loncommon::end_data_table_row();
            }
        }
    }
    $datatable .= &Apache::loncommon::start_data_table_row().
                  '<td>'.&mt($othertitle).'</td><td><table>';
    for (my $i=0; $i<@fields; $i++) {
        my $rem = $i%($numinrow);
        if ($rem == 0) {
            if ($i > 0) {
                $datatable .= '</tr>';
            }
            $datatable .= '<tr>';
        }
        my $check = ' ';
        if (ref($currautoupdate{'fields'}) eq 'HASH') {
            if (ref($currautoupdate{'fields'}{'default'}) eq 'ARRAY') {
                if (grep(/^\Q$fields[$i]\E$/,@{$currautoupdate{'fields'}{'default'}})) {
                    $check = ' checked="checked" ';
                }
            }
        }
        if ($i == @fields-1) {
            my $colsleft = $numinrow - $rem;
            if ($colsleft > 1) {
                $datatable .= '<td colspan="'.$colsleft.'">';
            } else {
                $datatable .= '<td>';
            }
        } else {
            $datatable .= '<td>';
        }
        $datatable .=  '<nobr><input type="checkbox" name="updateable_default_'.
                       $fields[$i].'" value="1"'.$check.'/>'.
                       $fieldtitles{$fields[$i]}.'</nobr></td>';
    }
    $datatable .= '</tr></table></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::end_data_table();
    &print_header($r);
    &print_form($r,$datatable,$phase,'configupdate','Change');
}

sub modify_autoupdate {
    my ($r,$phase,$dom,$domdesc) = @_;
    my ($resulttext,%currautoupdate,%fields,%changes);
    my %domconfig = &Apache::lonnet::get_dom('configuration',
                                             ['autoupdate'],$dom);
    if (ref($domconfig{'autoupdate'}) eq 'HASH') {
        foreach my $key (keys(%{$domconfig{'autoupdate'}})) {
            $currautoupdate{$key} = $domconfig{'autoupdate'}{$key};
        }
    }
    my @offon = ('off','on');
    my %title = &Apache::lonlocal::texthash (
                   run => 'Auto-update:',
                   classlists => 'Updates to user information in classlists?'
                );
    my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
    my %fieldtitles = &Apache::lonlocal::texthash (
                        id => 'Student/Employee ID',
                        email => 'E-mail address',
                        lastname => 'Last Name',
                        firstname => 'First Name',
                        middlename => 'Middle Name',
                        gen => 'Generation',
                      );
    my $othertitle = &mt('All users');
    if (keys(%{$usertypes}) >  0) {
        $othertitle = "Other users";
    }
    foreach my $key (keys(%env)) {
        if ($key =~ /^form\.updateable_(.+)_([^_]+)$/) {
            push(@{$fields{$1}},$2);
        }
    }
    my %updatehash = (
                      autoupdate => { run => $env{'form.autoupdate_run'},
                                      classlists => $env{'form.classlists'},
                                      fields => {%fields},
                                    }
                     );
    foreach my $key (keys(%currautoupdate)) {
        if (($key eq 'run') || ($key eq 'classlists')) {
            if (exists($updatehash{autoupdate}{$key})) {
                if ($currautoupdate{$key} ne $updatehash{autoupdate}{$key}) {
                    $changes{$key} = 1;
                }
            }
        } elsif ($key eq 'fields') {
            if (ref($currautoupdate{$key}) eq 'HASH') {
                foreach my $item (keys(%{$currautoupdate{$key}})) {
                    if (ref($currautoupdate{$key}{$item}) eq 'ARRAY') {
                        my $change = 0;
                        foreach my $type (@{$currautoupdate{$key}{$item}}) {
                            if (!exists($fields{$item})) {
                                $change = 1;
                            } elsif (ref($fields{$item}) eq 'ARRAY') {
                                if (!grep/^\Q$type\E$/,@{$fields{$item}}) {
                                    $change = 1;
                                }
                            }
                        }
                        if ($change) {
                            push(@{$changes{$key}},$item);
                        }
                    }
                }
            }
        }
    }
    foreach my $key (keys(%fields)) {
        if (ref($currautoupdate{'fields'}) eq 'HASH') {
            if (!exists($currautoupdate{'fields'}{$key})) {
                push(@{$changes{'fields'}},$key);
            }
        } else {
            push(@{$changes{'fields'}},$key);
        }
    }
    my $putresult = &Apache::lonnet::put_dom('configuration',\%updatehash,
                                             $dom);
    if ($putresult eq 'ok') {
        if (keys(%changes) > 0) {
            $resulttext = &mt('Changes made:').'<ul>';
            foreach my $key (sort(keys(%changes))) {
                if (ref($changes{$key}) eq 'ARRAY') {
                    foreach my $item (@{$changes{$key}}) {
                        my @newvalues;
                        foreach my $type (@{$fields{$item}}) {
                            push(@newvalues,$fieldtitles{$type});
                        }
                        my $newvaluestr = join(', ',@newvalues);
                        if ($item eq 'default') {
                            $resulttext .= '<li>'.&mt("Updates for $othertitle set to: [_1]",$newvaluestr).'</li>';
                        } else {
                            $resulttext .= '<li>'.&mt("Updates for [_1] set to: [_2]",$usertypes->{$item},$newvaluestr).'</li>';
                        }
                    }
                } else {
                    my $newvalue;
                    if ($key eq 'run') {
                        $newvalue = $offon[$env{'form.autoupdate_run'}];
                    } else {
                        $newvalue = $offon[$env{'form.'.$key}];
                    } 
                    $resulttext .= '<li>'.&mt("[_1] set to $newvalue",$title{$key}).'</li>';
                }
            }
            $resulttext .= '</ul>';
        } else {
            $resulttext = &mt('No changes made to default quotas');
        }
    } else {
        $resulttext = &mt('An error occurred: [_1]',$putresult);
    }
    &print_header($r);
    &print_form($r,$resulttext,$phase,'start','Back to actions menu');
}

sub print_form {
    my ($r,$datatable,$phase,$newphase,$button_text) = @_;
    my $button_text = &mt($button_text);
    $r->print(<<ENDDOCUMENT);
<form action="/adm/domainprefs" method="post" name="$phase">
<br />
$datatable
<br />
<input type="hidden" name="phase" value="" />
<input type="button" name="store" value="$button_text" onclick="javascript:changePage(document.$phase,'$newphase')" />
</form>
ENDDOCUMENT
    return;
}

1;