# The LearningOnline Network
# Utilities to administer domain course requests and course self-enroll requests 
#
# $Id: loncoursequeueadmin.pm,v 1.12.2.8 2010/02/26 23:39:01 raeburn 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/
#
###

=head1 NAME

Apache::loncoursequeueadmin.pm

=head1 SYNOPSIS

Utilities used by domain coordinators to administer queued course creation requests,
and by course coordinators for queued self-enrollment requests, and by general
users to display their queued self-enrollment requests.

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

=head1 SUBROUTINES

=over

=item send_selfserve_notification()

=item display_queued_requests()

=item update_request_queue()

=item get_student_counts()

=item course_creation()

=item build_batchcreatehash()

=item can_clone_course()

=item queued_selfenrollment()

=back

=cut

package Apache::loncoursequeueadmin;

use strict;
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonmsg;
use Apache::lonlocal;
use Apache::lonuserutils;
use LONCAPA;

sub send_selfserve_notification {
    my ($notifylist,$textstr,$cid,$contextdesc,$timestamp,$context,$sender,
        $approvedlist,$rejectedlist,$crstype) = @_;
# FIXME locallocaltime needs to be able to take $sender_lh as an argument
#       so this can be localized to the recipients date display format/time zone
    $timestamp =&Apache::lonlocal::locallocaltime($timestamp);
    my $msgcc;
    my ($rawsubj,@rawmsg,$subject,$message,$reviewer,$msgtxt);
    if ($context eq 'coursemanagers') {
        $rawsubj = 'Self-enrollment requests processed';
        push(@rawmsg,{
                      mt => 'Enrollment requests in the following course: [_1] have been processed.',
                      args => ["\n  $contextdesc"],
                     });
    } elsif ($context eq 'domainmanagers') {
        $rawsubj = 'Course/Community requests reviewed';
        push(@rawmsg,{
                      mt  => 'Course/Community creation requests in the following domain: [_1] have been reviewed.',
                      args => ["\n  $contextdesc"],
                     });
        if (ref($textstr) eq 'ARRAY') {
            push(@rawmsg,@{$textstr});
        }
    } elsif ($context eq 'enroller') {
        $rawsubj = 'Enrollment request';
        if ($crstype eq 'community') {
            $msgtxt = 'Your request for enrollment in the following community: [_1]requested on [_2]has been reviewed by a Coordinator.'
        } else {
            $msgtxt = 'Your request for enrollment in the following course: [_1]requested on [_2]has been reviewed by a Course Coordinator.';
        } 
        push(@rawmsg,{
                      mt  => $msgtxt,
                      args => ["\n  ".$contextdesc.",\n",$timestamp.",\n"],

                     });
        if (ref($textstr) eq 'ARRAY') {
            push(@rawmsg,@{$textstr});
        }
    } elsif ($context eq 'courserequestor') {
        if ($crstype eq 'Community') {
            $rawsubj = 'Community request';
            $msgtxt = 'Your request for creation of the following community: [_1]requested on [_2]has been reviewed by a Domain Coordinator.';
        } else {
            $rawsubj = 'Course request';
            $msgtxt = 'Your request for creation of the following course: [_1]requested on [_2]has been reviewed by a Domain Coordinator.';
        }
        push(@rawmsg,{
                      mt  => $msgtxt,
                      args => ["\n".$contextdesc.",\n",$timestamp.",\n"],

                     });
        if (ref($textstr) eq 'ARRAY') {
            push(@rawmsg,@{$textstr});
        }
    } elsif ($context eq 'coursereq') {
        if ($crstype eq 'community') {
            $rawsubj = 'Community request to review';
            $msgtxt = 'Creation of the following community: [_1]was requested by [_2] on [_3].';
        } else {
            $rawsubj = 'Course request to review';
            $msgtxt = 'Creation of the following course: [_1]was requested by [_2] on [_3].';
        }
        push(@rawmsg,{
                      mt  => $msgtxt,
                      args => ["\n  $contextdesc\n",$textstr,$timestamp],
                     },
                     {
                      mt =>'[_1]As Domain Coordinator, use: [_2]Main Menu -> Course and community creation -> Approve or reject requests[_3]to display a list of pending requests, which you can either approve or reject.',
                      args => ["\n","\n\n  ","\n\n"],
                     });
    } elsif ($context eq 'selfenrollreq') {
        $rawsubj = 'Self-enrollment request';
        if ($crstype eq 'community') {
            $msgtxt = 'Enrollment in the following community: [_1] was requested by [_2] on [_3].'
        } else {
            $msgtxt = 'Enrollment in the following course: [_1] was requested by [_2] on [_3].'
        }
        push(@rawmsg,{
                      mt  => $msgtxt,
                      args => ["\n  $contextdesc\n",$textstr,$timestamp."\n"],
                     });
        my $directions;  
        if ($crstype eq 'community') {
            $directions = 'As Coordinator, use: [_1]Main Menu -> Manage Community Users -> Enrollment Requests[_2]to display a list of pending enrollment requests, which you can either approve or reject.';
        } else {
            $directions = 'As Course Coordinator, use: [_1]Main Menu -> Manage Course Users -> Enrollment Requests[_2]to display a list of pending enrollment requests, which you can either approve or reject.';
        }
        push(@rawmsg,
                     {
                      mt   => $directions,
                      args => ["  \n\n","\n"],
                     });

    }
    my @to_notify = split(/,/,$notifylist);
    my $numsent = 0;
    my @recusers;
    my @recudoms;
    foreach my $cc (@to_notify) {
        my ($ccname,$ccdom) = split(/:/,$cc);
        if (!exists($msgcc->{$ccname.':'.$ccdom})) {
            push(@recusers,$ccname);
            push(@recudoms,$ccdom);
            $msgcc->{$ccname.':'.$ccdom}='';
            $numsent ++;
        }
    }
    my %reciphash = (
                     cc => $msgcc,
    );
    my ($uname,$udom);
    if ($sender =~ /:/) {
        ($uname,$udom) = split(/:/,$sender);
    } elsif ($context eq 'course') {
        $uname = $sender;
        my %courseinfo = &Apache::lonnet::coursedescription($cid);
        $udom = $courseinfo{'num'};
    }
    my %sentmessage;
    my $stamp = time;
    my $msgcount = &Apache::lonmsg::get_uniq();
    my $sender_lh = &Apache::loncommon::user_lang($uname,$udom,$cid);
    $subject = &Apache::lonlocal::mt_user($sender_lh,$rawsubj);
    $message = '';
    foreach my $item (@rawmsg) {
        if (ref($item) eq 'HASH') {
            $message .= &Apache::lonlocal::mt_user($sender_lh,$item->{mt},@{$item->{args}})."\n";
        }
    }
    &Apache::lonmsg::process_sent_mail($subject,'',$numsent,$stamp,$uname,$udom,$msgcount,$cid,$$,$message,\@recusers,\@recudoms);
    my ($recipid,$recipstatus) = &Apache::lonmsg::store_recipients($subject,$uname,$udom,\%reciphash);
    my $status;
    foreach my $recip (sort(keys(%{$msgcc}))) {
        my ($ccname,$ccdom) = split(/:/,$recip);
        my $recip_lh = &Apache::loncommon::user_lang($ccname,$ccdom,$cid);
        my $subject = &Apache::lonlocal::mt_user($sender_lh,$rawsubj);
        my $message = '';
        foreach my $item (@rawmsg) {
            if (ref($item) eq 'HASH') {
                $message .= &Apache::lonlocal::mt_user($sender_lh,$item->{mt},
                                                       @{$item->{args}})."\n";
            }
        }
        if ($context eq 'coursemanagers') {
            if ($approvedlist) {
                $message .= "\n\n".&Apache::lonlocal::mt_user($sender_lh,'Approved enrollments:')."\n".$approvedlist;
            }
            if ($rejectedlist) {
                $message .= "\n\n".&Apache::lonlocal::mt_user($sender_lh,'Rejected enrollments:')."\n".$rejectedlist;
            }
        } elsif ($context eq 'domainmanagers') {
            if ($approvedlist) {
                $message .= "\n\n".&Apache::lonlocal::mt_user($sender_lh,'Approved course requests:')."\n".$approvedlist;
            }
            if ($rejectedlist) {
                $message .= "\n\n".&Apache::lonlocal::mt_user($sender_lh,'Rejected course requests:')."\n".$rejectedlist;
            }
        }
        $status .= &Apache::lonmsg::user_normal_msg($ccname,$ccdom,$subject,$message,undef,undef,undef,1,\%sentmessage,undef,undef,undef,1,$recipid).',';
    }
    $status =~ s/,$//;
    return ($recipstatus,$status);
}

sub display_queued_requests {
    my ($context,$dom,$cnum) = @_;
    my ($namespace,$formaction,$nextelement,%requesthash);
    if ($context eq 'course') {
        $formaction = '/adm/createuser';
        $namespace = 'selfenrollrequests';
        %requesthash = &Apache::lonnet::dump($namespace,$dom,$cnum);
        $nextelement = '<input type="hidden" name="state" value="done" />';
    } else {
        $formaction = '/adm/createcourse';
        $namespace = 'courserequestqueue';
        %requesthash = &Apache::lonnet::dump_dom($namespace,$dom,'_approval');
        $nextelement = '<input type="hidden" name="phase" value="requestchange" />';
    }
    my ($output,%queue_by_date,%crstypes);
    if (keys(%requesthash) > 0) {
        $output = '<form method="post" name="changequeue" action="'.$formaction.'" />'."\n".
                  '<input type="hidden" name="action" value="'.$env{'form.action'}.'" />'."\n".
                  $nextelement."\n".
                  &Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row().
                  '<th>'.&mt('Action').'</th>'.
                  '<th>'.&mt('Requestor').'</th>';
        if ($context eq 'course') {
            $output .= '<th>'.&mt('Section').'</th>'.
                       '<th>'.&mt('Date requested').'</th>';
        } else {
            %crstypes = &Apache::lonlocal::texthash (
                            official   => 'Official course',
                            unofficial => 'Unofficial course',
                            community  => 'Community',
                        );
            $output .= '<th>'.&mt('Type').'</th>'.
                       '<th>'.&mt('Date requested').'</th>'.
                       '<th>'.&mt('Details').'</th>';
        }
        $output .= &Apache::loncommon::end_data_table_header_row();
        foreach my $item (keys(%requesthash)) {
            my ($timestamp,$entry);
            if ($context eq 'course') {
                ($timestamp, my $usec) = split(/:/,$requesthash{$item});
                $entry = $item.':'.$usec;
            } else {
                $timestamp = $requesthash{$item}{'timestamp'};
                if (ref($requesthash{$item}) eq 'HASH') {
                    my ($cnum,$disposition) = split('_',$item);
                    $entry = $cnum.':'.$requesthash{$item}{'ownername'}.':'.
                             $requesthash{$item}{'ownerdom'}.':'.
                             $requesthash{$item}{'crstype'}.':'.
                             $requesthash{$item}{'description'};
                }
            }
            if ($entry ne '') {
                if (exists($queue_by_date{$timestamp})) {
                    if (ref($queue_by_date{$timestamp}) eq 'ARRAY') {
                        push(@{$queue_by_date{$timestamp}},$entry);
                    }
                } else {
                    @{$queue_by_date{$timestamp}} = ($entry);
                }
            }
        }
        my @sortedtimes = sort {$a <=> $b} (keys(%queue_by_date));
        my $count = 0;
        foreach my $item (@sortedtimes) {
            if (ref($queue_by_date{$item}) eq 'ARRAY') {
                foreach my $request (sort(@{$queue_by_date{$item}})) {
                    my ($row,$approve,$reject,$showtime,$showsec,$namelink,
                        $detailslink,$crstype);
                    $showtime = &Apache::lonlocal::locallocaltime($item);
                    if ($context eq 'course') {
                        my ($puname,$pudom,$pusec) = split(/:/,$request);
                        $approve = $count.':'.$puname.':'.$pudom.':'.$pusec;
                        $reject = $puname.':'.$pudom;
                        $showsec = $pusec;
                        if ($showsec eq '') {
                            $showsec = &mt('none');
                        }
                        $namelink = &Apache::loncommon::aboutmewrapper(
                                    &Apache::loncommon::plainname($puname,$pudom),
                                    $puname,$pudom);

                    } else {
                        my ($cnum,$ownername,$ownerdom,$type,$cdesc)=split(/:/,$request,5);
                        $detailslink='<a href="javascript:opencoursereqdisplay('.
                                      "'$dom','$cnum'".');">'.$cdesc.'</a>';
                        $crstype = $type;
                        if (defined($crstypes{$type})) {
                            $crstype = $crstypes{$type};
                        }
                        $approve = $count.':'.$cnum;
                        $reject = $cnum;
                        $namelink = &Apache::loncommon::aboutmewrapper(
                                    &Apache::loncommon::plainname($ownername,$ownerdom),
                                    $ownername,$ownerdom);
                    }
                    $row = '<td><span class="LC_nobreak"><label>'.
                           '<input type="checkbox" value="'.$approve.'" name="approvereq" />'.&mt('Approve').'</label></span><br />'.
                           '<span class="LC_nobreak"><label>'.
                           '<input type="checkbox" value="'.$reject.'" name="rejectreq" />'.&mt('Reject').'</label></span><br /></td>'.
                           '<td>'.$namelink.'</td>'."\n";
                    if ($context eq 'course') {
                        $row .= '<td>'.$showsec.'</td>'."\n".
                                '<td>'.$showtime.'</td>'."\n";
                    } else { 
                        $row .= '<td>'.$crstype.'</td>'."\n".
                                '<td>'.$showtime.'</td>'."\n".
                                '<td>'.$detailslink.'</td>'."\n";
                    }
                    $output .= &Apache::loncommon::start_data_table_row()."\n".
                               $row.
                               &Apache::loncommon::end_data_table_row()."\n";
                    $count ++;
                }
            }
        }
        $output .= &Apache::loncommon::end_data_table().
                   '<input type="submit" name="processqueue" value="'.&mt('Save').
                   '" /></form>';
    } else {
        if ($context eq 'course') {
            $output .= &mt('There are currently no enrollment requests.');
        } else {
            $output .= &mt('There are currently no course or community requests awaiting approval.');
        }
    }
    return $output;
}

sub update_request_queue {
    my ($context,$cdom,$cnum,$coursedesc) = @_;
    my ($output,$access_start,$access_end,$limit,$cap,$notifylist,$namespace,
        $stucounts,$idx,$classlist,%requesthash,$cid,$hostname,$protocol,
        $domdesc,$now,$sender,$approvedmsg,$rejectedmsg,$beneficiary,
        @existing,@missingreq,@invalidusers,@limitexceeded,@completed,
        @processing_errors,@warn_approves,@warn_rejects,@approvals,
        @rejections,@rejectionerrors,@nopermissions,%courseroles,
        %communityroles,%domdefs,%approvalmsg,%rejectionmsg,$crstype,
        @warn_coursereqs);
    @approvals = &Apache::loncommon::get_env_multiple('form.approvereq');
    @rejections = &Apache::loncommon::get_env_multiple('form.rejectreq');
    $now = time;
    $sender = $env{'user.name'}.':'.$env{'user.domain'};
    if ($context eq 'course') {
        $namespace = 'selfenrollrequests';
        $beneficiary = 'enroller';
        $cid = $env{'request.course.id'};
        $crstype = lc(&Apache::loncommon::course_type());
        my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
        $hostname = &Apache::lonnet::hostname($chome);
        $protocol = $Apache::lonnet::protocol{$chome};
        $protocol = 'http' if ($protocol ne 'https');
        %requesthash = &Apache::lonnet::dump($namespace,$cdom,$cnum);
        $access_start =  $env{'course.'.$cid.'.internal.selfenroll_start_access'};
        $access_end =  $env{'course.'.$cid.'.internal.selfenroll_end_access'};
        $limit = $env{'course.'.$cid.'.internal.selfenroll_limit'};
        $cap = $env{'course.'.$cid.'.internal.selfenroll_cap'};
        $notifylist = $env{'course.'.$cid.'.internal.selfenroll_notifylist'};
        ($stucounts,$idx,$classlist) = &get_student_counts($cdom,$cnum);
        $approvedmsg = [{
                            mt => 'Your request for enrollment has been approved.',
                        },
                        {
                            mt   => 'Visit [_1], to log-in and access the course',
                            args => [$protocol.'://'.$hostname],
                        }];
        $rejectedmsg =  [{
                            mt => 'Your request for enrollment has not been approved.',
                        }];
    } else {
        $domdesc = &Apache::lonnet::domain($cdom);
        $namespace = 'courserequestqueue';
        $beneficiary = 'courserequestor';
        %requesthash = &Apache::lonnet::dump_dom($namespace,$cdom,'_approval');
        my $chome = &Apache::lonnet::domain($cdom,'primary');
        $hostname = &Apache::lonnet::hostname($chome);
        $protocol = $Apache::lonnet::protocol{$chome};
        $protocol = 'http' if ($protocol ne 'https');
        my %domconfig = &Apache::lonnet::get_dom('configuration',['requestcourses'],$cdom);
        if (ref($domconfig{'requestcourses'}) eq 'HASH') {
            if (ref($domconfig{'requestcourses'}{'notify'}) eq 'HASH') { 
                $notifylist = $domconfig{'requestcourses'}{'notify'}{'approval'};
            }
        }
        $approvalmsg{'course'} = 
                        [{
                            mt => 'Your course request has been approved.',
                        },
                        {
                            mt   => 'Visit [_1], to log-in and access the course',
                            args => [$protocol.'://'.$hostname],
                        }];
        $rejectionmsg{'course'} =
                        [{
                            mt => 'Your course request has not been approved.',
                        }];

        $approvalmsg{'community'} = 
                        [{
                            mt => 'Your community request has been approved.',
                        },
                        {
                            mt   => 'Visit [_1], to log-in and access the community',
                            args => [$protocol.'://'.$hostname],
                        }];

        $rejectionmsg{'community'} = 
                        [{
                            mt => 'Your community request has not been approved.',
                        }];

        %domdefs = &Apache::lonnet::get_domain_defaults($cdom);
        my @roles = &Apache::lonuserutils::roles_by_context('course');
        foreach my $role (@roles) {
            $courseroles{$role}=&Apache::lonnet::plaintext($role,'Course');
        }
        foreach my $role (@roles) {
            $communityroles{$role}=&Apache::lonnet::plaintext($role,'Community');
        }

    }
    foreach my $item (sort {$a <=> $b} @approvals) {
        if ($context eq 'course') {
            my ($num,$uname,$udom,$usec) = split(/:/,$item);
            my $uhome = &Apache::lonnet::homeserver($uname,$udom);
            if ($uhome ne 'no_host') {
                if (exists($requesthash{$uname.':'.$udom})) {
                    if ($cdom eq 'gci' && $cnum eq '9615072b469884921gcil1') {
                        my $enresult = &enable_gci_submission($udom,$uname,
                                                   $access_end,$access_start);
                    }
                    if (exists($classlist->{$uname.':'.$udom})) {
                        if (ref($classlist->{$uname.':'.$udom}) eq 'ARRAY') {
                            if (($classlist->{$uname.':'.$udom}->[$idx->{'status'}] eq 'Active') ||
                                ($classlist->{$uname.':'.$udom}->[$idx->{'status'}] eq 'Future')) {
                                push(@existing,$uname.':'.$udom);
                                next;
                            }
                        }
                    }
                } else {
                    push(@missingreq,$uname.':'.$udom);
                    next;
                }
                if (!grep(/^\Q$item\E$/,@rejections)) {
                    if ($limit eq 'allstudents') {
                        if ($stucounts->{$limit} >= $cap) {
                            push(@limitexceeded,$uname.':'.$udom);
                            last;
                        }
                    } elsif ($limit eq 'selfenrolled') {
                        if ($stucounts->{$limit} >= $cap) {
                            push(@limitexceeded,$uname.':'.$udom);
                            last;
                        }
                    }
                    my $result =
                        &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,$usec,$access_end,$access_start,'selfenroll',undef,$cdom.'_'.$cnum,1);
                    if ($result eq 'ok') {
                        push(@completed,$uname.':'.$udom);
                        $stucounts->{'allstudents'} ++;
                        $stucounts->{'selfenrolled'} ++;
                        &send_selfserve_notification($uname.':'.$udom,$approvedmsg,
                                       $cid,$coursedesc,$now,$beneficiary,$sender,undef,undef,$crstype);
                        my %userrequest = (
                            $cdom.'_'.$cnum => {
                                timestamp   => $now,
                                section     => $usec,
                                adjudicator => $env{'user.name'}.':'.$env{'user.domain'},
                                status      => 'approved',
                            }
                        );
                        my $userresult =
                            &Apache::lonnet::put($namespace,\%userrequest,$udom,$uname);
                        if ($userresult ne 'ok') {
                            push(@warn_approves,$uname.':'.$udom);
                        } elsif ($udom eq 'gci') {
                            my %changehash = (
                                'reqcrsotherdom.unofficial' => 'gcitest:autolimit=',
                            );
                            my $reqresult = &Apache::lonnet::put('environment',\%changehash,
                                                                 $udom,$uname);
                            if ($reqresult ne 'ok') {
                                push(@warn_coursereqs,$uname.':'.$udom);
                            }
                        }
                    } else {
                        push(@processing_errors,$uname.':'.$udom);
                    }
                }
            } else {
                push(@invalidusers,$uname.':'.$udom);
            }
        } else {
            my ($num,$cnum) = split(':',$item);
            if (ref($requesthash{$cnum.'_approval'}) eq 'HASH') {
                if (&Apache::lonnet::homeserver($cnum,$cdom) eq 'no_host') {
                    my $ownername = $requesthash{$cnum.'_approval'}{'ownername'};
                    my $ownerdom = $requesthash{$cnum.'_approval'}{'ownerdom'};
                    $crstype = $requesthash{$cnum.'_approval'}{'crstype'};
                    my $coursedesc = $requesthash{$cnum.'_approval'}{'description'};
                    my $longroles = \%courseroles;
                    if ($crstype eq 'community') {
                        $longroles = \%communityroles;
                    }
                    my $cancreate;
                    if ($cdom eq $ownerdom) {
                        if (&Apache::lonnet::usertools_access($ownername,$ownerdom,$crstype,
                                                              undef,'requestcourses')) {
                            $cancreate = 1;
                        }
                    } else {
                        my %userenv = &Apache::lonnet::userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.$crstype);
                        if ($userenv{'reqcrsotherdom.'.$crstype}) {
                            my @doms = split(',',$userenv{'reqcrsotherdom.'.$crstype});
                            if (grep(/^\Q$cdom\E:/,@doms)) {
                                $cancreate = 1;
                            }
                        }
                    }
                    if ($cancreate) {
                        my $requestkey = $cdom.'_'.$cnum;
                        my %history = 
                            &Apache::lonnet::restore($requestkey,'courserequests',
                                                     $ownerdom,$ownername);
                        if ((ref($history{'details'}) eq 'HASH') && 
                            ($history{'disposition'} eq 'approval')) {
                            my ($logmsg,$newusermsg,$addresult,$enrollcount,$response,$keysmsg);
                            my $result = &course_creation($cdom,$cnum,$context,$history{'details'},\$logmsg,
                                                      \$newusermsg,\$addresult,\$enrollcount,
                                                      \$response,\$keysmsg,\%domdefs,$longroles);
                            if ($result eq 'created') {
                                if ($crstype eq 'community') {
                                    $approvedmsg = $approvalmsg{'community'};
                                } else {
                                    $approvedmsg = $approvalmsg{'course'};
                                }
                                push(@completed,$cnum);
                                &send_selfserve_notification($ownername.':'.$ownerdom,$approvedmsg,
                                              $cid,$coursedesc,$now,$beneficiary,$sender,undef,undef,$crstype);
                                my %reqhash = (
                                                reqtime     => $history{'reqtime'},
                                                crstype     => $history{'crstype'},
                                                details     => $history{'details'},
                                                disposition => $history{'disposition'},
                                                status      => 'created',
                                                adjudicator => $env{'user.name'}.':'.
                                                               $env{'user.domain'},
                                              );
                                my $userresult =
                                    &Apache::lonnet::store_userdata(\%reqhash,$requestkey,
                                                   'courserequests',$ownerdom,$ownername);
                                if ($userresult eq 'ok') {
                                    my %status = (
                                                   'status:'.$cdom.':'.$cnum => 'created'
                                                 );
                                    my $statusresult = 
                                        &Apache::lonnet::put('courserequests',\%status,
                                                             $ownerdom,$ownername);
                                    if ($statusresult ne 'ok') {
                                        push(@warn_approves,$cnum);
                                    }
                                }
                                if ($userresult ne 'ok') {
                                    push(@warn_approves,$cnum);
                                }
                            } else {
                                push(@processing_errors,$cnum);
                            }
                        } else {
                            push(@processing_errors,$cnum);
                        }
                    } else {
                        push(@nopermissions,$cnum);
                    }
                } else {
                    push(@existing,$cnum);
                }
            } else {
                push(@missingreq,$cnum);
            }
        }
    }
    my @changes = (@completed,@rejections);
    if ($context eq 'domain') {
        @changes = map {$_.'_approval'} (@changes);
    }
    if (@rejections) {
        foreach my $item (@rejections) {
            if ($context eq 'course') {
                my $user = $item;
                &send_selfserve_notification($user,$rejectedmsg,$cid,$coursedesc,
                                             $now,$beneficiary,$sender,undef,undef,$crstype);
                my ($uname,$udom) = split(/:/,$user);
                my %userrequest = (
                    $cdom.'_'.$cnum => {
                        timestamp   => $now,
                        adjudicator => $env{'user.name'}.':'.$env{'user.domain'},
                        status      => 'rejected',
                    }
                );
                my $userresult =
                    &Apache::lonnet::put($namespace,\%userrequest,$udom,$uname);
                if ($userresult ne 'ok') {
                    push(@warn_rejects,$user);
                }
            } else {
                my $cnum = $item;
                if (ref($requesthash{$cnum.'_approval'}) eq 'HASH') {
                    if (&Apache::lonnet::homeserver($cnum,$cdom) eq 'no_host') {
                        my $requestkey = $cdom.'_'.$cnum;
                        my $ownername = $requesthash{$cnum.'_approval'}{'ownername'};
                        my $ownerdom = $requesthash{$cnum.'_approval'}{'ownerdom'};
                        my $coursedesc = $requesthash{$cnum.'_approval'}{'description'};
                        $crstype = $requesthash{$cnum.'_approval'}{'crstype'};
                        if ($crstype eq 'community') {
                            $rejectedmsg = $rejectionmsg{'community'};
                        } else {
                            $rejectedmsg = $rejectionmsg{'course'};
                        }
                        &send_selfserve_notification($ownername.':'.$ownerdom,$rejectedmsg,
                                                     $cid,$coursedesc,$now,$beneficiary,
                                                     $sender,undef,undef,$crstype);
                        my %history =
                            &Apache::lonnet::restore($requestkey,'courserequests',
                                                     $ownerdom,$ownername);
                        if ((ref($history{'details'}) eq 'HASH') &&
                            ($history{'disposition'} eq 'approval')) {
                            my %reqhash = (
                                            reqtime     => $history{'reqtime'},
                                            crstype     => $history{'crstype'},
                                            details     => $history{'details'},
                                            disposition => $history{'disposition'},
                                            status      => 'rejected',
                                            adjudicator => $env{'user.name'}.':'.$env{'user.domain'},
                                              );
                            my $userresult =
                                &Apache::lonnet::store_userdata(\%reqhash,$requestkey,
                                                'courserequests',$ownerdom,$ownername);
                            if ($userresult eq 'ok') {
                                my %status = (
                                               'status:'.$cdom.':'.$cnum => 'rejected'
                                             );
                                my $statusresult =
                                    &Apache::lonnet::put('courserequests',\%status,
                                                         $ownerdom,$ownername);
                                if ($statusresult ne 'ok') {
                                    push(@warn_rejects,$cnum);
                                }
                            } else {
                                push(@warn_rejects,$cnum);
                            }
                        } else {
                            push(@warn_rejects,$cnum);
                        }
                    } else {
                        push(@existing,$cnum);
                    }
                } else {
                    push(@rejectionerrors,$cnum);
                }
            }
        }
    }
    if (@changes) {
        my $delresult;
        if ($context eq 'course') {
            $delresult = &Apache::lonnet::del($namespace,\@changes,$cdom,$cnum);
        } else {
            $delresult = &Apache::lonnet::del_dom($namespace,\@changes,$cdom);
        }
        if ($delresult eq 'ok') {
            my $namelink =
                &Apache::loncommon::plainname($env{'user.name'},$env{'user.domain'}).' ('.$env{'user.name'}.':'.$env{'user.domain'}.')';
            my ($chgmsg,$approvedlist,$rejectedlist);
            if ($context eq 'course') {
                $chgmsg = "'Action was taken on the following enrollment requests by [_1].',$namelink";
                if (@completed) {
                    $approvedlist = join("\n",@completed);
                    if ($crstype eq 'community') {
                        $output .= '<p>'.&mt('The following were enrolled in the community:').'<ul>';
                    } else {
                        $output .= '<p>'.&mt('The following were enrolled in the course:').'<ul>';
                    }
                    foreach my $user (@completed) {
                        my ($uname,$udom) = split(/:/,$user);
                        my $userlink =
                            &Apache::loncommon::aboutmewrapper(&Apache::loncommon::plainname($uname,$udom),$uname,$udom);
                        $output .= '<li>'.$userlink.'</li>';
                    }
                    $output .= '</ul></p>';
                }
                if (@rejections) {
                    $rejectedlist = join("\n",@rejections);
                    $output .= '<p>'.&mt('The following enrollment requests were rejected:').'<ul>';
                    foreach my $user (@rejections) {
                        $output .= '<li>'.$user.'</li>';
                    }
                    $output .= '</ul></p>';
                }
                if ($notifylist ne '') {
                    &send_selfserve_notification($notifylist,$chgmsg,$cid,$coursedesc,
                                                 $now,'coursemanagers',$sender,
                                                 $approvedlist,$rejectedlist,$crstype);
                }
            } else {
                $chgmsg = "'Action was taken on the following course and community requests by [_1].',$namelink";
                if (@completed) {
                    $approvedlist = join("\n",@completed);
                    $output .= '<p>'.&mt('The following courses/communities were created:').'<ul>';
                    foreach my $cnum (@completed) {
                        my $showcourse;
                        if (ref($requesthash{$cnum.'_approval'})) {
                            $showcourse = $requesthash{$cnum.'_approval'}{'description'};
                        } else {
                            $showcourse = $cnum;
                        }
                        my $syllabuslink =
                            &Apache::loncommon::syllabuswrapper($showcourse,$cnum,$cdom);
                        $output .= '<li>'.$syllabuslink.'</li>';
                    }
                    $output .= '</ul></p>';
                }
                if (@rejections) {
                    $rejectedlist = join("\n",@rejections);
                    $output .= '<p>'.&mt('The following requests were rejected:').'<ul>';
                    foreach my $cnum (@rejections) {
                        my $showcourse;
                        if (ref($requesthash{$cnum.'_approval'})) {
                            $showcourse = $requesthash{$cnum.'_approval'}{'description'};
                        } else {
                            $showcourse = $cnum;
                        }
                        $output .= '<li>'.$showcourse.'</li>';
                    }
                    $output .= '</ul></p>';
                }
                if ($notifylist ne '') {
                    &send_selfserve_notification($notifylist,$chgmsg,$cid,$domdesc,
                                                 $now,'domainmanagers',$sender,
                                                 $approvedlist,$rejectedlist,$crstype);
                }
            }
        }
    }
    if (@existing) {
        if ($context eq 'course') {
            $output .= '<p>'.&mt('The following enrollment requests were deleted because the user is already enrolled in the course:').'<ul>';
            foreach my $user (@existing) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
        } else {
            $output .= '<p>'.&mt('The following course/community creation requests were deleted because the course or community has already been created:').'<ul>';
            foreach my $cnum (@existing) {
                my $showcourse;
                my %coursehash = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
                if ($coursehash{'description'} ne '') {
                    $showcourse = $coursehash{'description'};
                } else {
                    $showcourse = $cnum;
                }
                $output .= '<li>'.$showcourse.'</li>';
            }
            $output .= '</ul></p>';
        }
    }
    if (@missingreq) {
        if ($context eq 'course') {
            $output .= '<p>'.&mt('The following enrollment requests were ignored because the request is no longer in the enrollment queue:').'<ul>';
            foreach my $user (@missingreq) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
        } else {
            $output .= '<p>'.&mt('The following course/community creation requests were ignored because the request is no longer in the queue:').'<ul>';
            foreach my $cnum (@missingreq) {
                $output .= '<li>'.$cnum.'</li>';
            }
            $output .= '</ul></p>';

        }
    }
    if (@invalidusers) {
        if ($context eq 'course') {
            $output .= '<p>'.&mt('The following enrollment requests were deleted because the requestor does not have a LON-CAPA account:').'<ul>';
            foreach my $user (@invalidusers) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
        }
    }
    if (@limitexceeded) {
        if ($context eq 'course') {
            $output .= '<p>'.&mt('The following enrollment requests were skipped because the enrollment limit has been reached for the course:').'<ul>';
            foreach my $user (@limitexceeded) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
        }
    }
    if (@nopermissions) {
        $output .= '<p>'.&mt('The following course/community creation requests could not be processed because the owner does not have rights to create this type of course:').'<ul>';
        foreach my $cnum (@nopermissions) {
            my $showcourse;
            if (ref($requesthash{$cnum.'_approval'})) {
                $showcourse = $requesthash{$cnum.'_approval'}{'description'};
            } else {
                $showcourse = $cnum;
            }
            $output .= '<li>'.$showcourse.'</li>';
        }
        $output .= '</ul></p>';
    }
    if (@processing_errors) {
        if ($context eq 'course') {
            $output .= '<p>'.&mt('The following enrollment requests could not be processed because an error occurred:').'<ul>';
            foreach my $user (@processing_errors) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
        } else {
            $output .= '<p>'.&mt('The following course/community creation requests could not be processed because an error occurred:').'<ul>';
            foreach my $cnum (@processing_errors) {
                my $showcourse;
                if (ref($requesthash{$cnum.'_approval'})) {
                    $showcourse = $requesthash{$cnum.'_approval'}{'description'};
                } else {
                    $showcourse = $cnum;
                }
                $output .= '<li>'.$showcourse.'</li>';
            }
            $output .= '</ul></p>';
        }
    }
    if (@rejectionerrors) {
        $output .= '<p>'.&mt('The following course/community creation request rejections could not be fully processed because an error occurred:').'<ul>';
        foreach my $cnum (@rejectionerrors) {
            my $showcourse;
            if (ref($requesthash{$cnum.'_approval'})) {
                $showcourse = $requesthash{$cnum.'_approval'}{'description'};
            } else {
                $showcourse = $cnum;
            }
            $output .= '<li>'.$showcourse.'</li>';
        }
        $output .= '</ul></p>';
    }
    if (@warn_approves || @warn_rejects) {
        if ($context eq 'course') {
            $output .= '<p>'.&mt("For the following users, an error occurred when updating the user's own self-enroll requests record:").'<ul>';
            foreach my $user (@warn_approves) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
        } else {
            $output .= '<p>'.&mt("For the following course/community requests an error occurred when updating the requestor's own requests record:").'<ul>';
            foreach my $cnum (@warn_approves,@warn_rejects) {
                my $showcourse;
                if (ref($requesthash{$cnum.'_approval'})) {
                    $showcourse = $requesthash{$cnum.'_approval'}{'description'};
                } else {
                    $showcourse = $cnum;
                }
                $output .= '<li>'.$showcourse.'</li>';
            }
            $output .= '</ul></p>';
        }
    }
    if (@warn_coursereqs) {
        $output .= '<p>'..&mt("For the following users, an error occurred when setting rights to request creation of Concept Test courses:").'<ul>';
            foreach my $user (@warn_coursereqs) {
                $output .= '<li>'.$user.'</li>';
            }
            $output .= '</ul></p>';
    }
    return $output;
}

sub enable_gci_submission {
    my ($udom,$uname,$access_end,$access_start) = @_;
    my $cdom = 'gci';
    my $cnum = '1H96711d710194bfegcil1';
    my ($stucounts,$idx,$classlist) = &get_student_counts($cdom,$cnum);
    if (exists($classlist->{$uname.':'.$udom})) {
        if (ref($classlist->{$uname.':'.$udom}) eq 'ARRAY') {
            if (($classlist->{$uname.':'.$udom}->[$idx->{'status'}] eq 'Active') ||
                ($classlist->{$uname.':'.$udom}->[$idx->{'status'}] eq 'Future')) {
                return;
            }
        }
    }
    return
        &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,undef,$access_end,$access_start,'selfenroll',undef,$cdom.'_'.$cnum,1);
}

sub get_student_counts {
    my ($cdom,$cnum) = @_;
    my (%idx,%stucounts);
    my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cnum);
    $idx{'type'} = &Apache::loncoursedata::CL_TYPE();
    $idx{'status'} = &Apache::loncoursedata::CL_STATUS();
    while (my ($student,$data) = each(%$classlist)) {
        if (($data->[$idx{'status'}] eq 'Active') ||
            ($data->[$idx{'status'}] eq 'Future')) {
            if ($data->[$idx{'type'}] eq 'selfenroll') {
                $stucounts{'selfenroll'} ++;
            }
            $stucounts{'allstudents'} ++;
        }
    }
    return (\%stucounts,\%idx,$classlist);
}

sub course_creation {
    my ($dom,$cnum,$context,$details,$logmsg,$newusermsg,$addresult,$enrollcount,$output,
        $keysmsg,$domdefs,$longroles) =  @_;
    unless ((ref($details) eq 'HASH') && (ref($domdefs) eq 'HASH') && 
            (ref($longroles) eq 'HASH')) {
        return 'error: Invalid request';
    }
    my ($result,$ownername,$ownerdom);
    my $crstype = $details->{'crstype'};
    if ($context eq 'domain') {
        $ownername = $details->{'owner'};
        $ownerdom  = $details->{'domain'};
    } else {
        $ownername = $env{'user.name'};
        $ownerdom  = $env{'user.domain'};
    }
    my $owneremail;
    my %emails = &Apache::loncommon::getemails($ownername,$ownerdom);
    foreach my $email ('permanentemail','critnotification','notification') {
        $owneremail = $emails{$email};
        last if ($owneremail ne '');
    }
    my %reqdetails = &build_batchcreatehash($dom,$context,$details,$owneremail,$domdefs);
    my $cid = &LONCAPA::batchcreatecourse::build_course($dom,$cnum,'requestcourses',
                  \%reqdetails,$longroles,$logmsg,$newusermsg,$addresult,
                  $enrollcount,$output,$keysmsg,$ownerdom,$ownername,$cnum,$crstype);
    if ($cid eq "/$dom/$cnum") {
        $result = 'created';
    } else {
        $result = 'error: '.$cid;
    }
    return $result;
}

sub build_batchcreatehash {
    my ($dom,$context,$details,$owneremail,$domdefs) = @_;
    my %batchhash;
    my @items = qw{owner domain coursehome clonecrs clonedom cloneroster datemode dateshift enrollstart enrollend accessstart accessend sections crosslists users};
    if ($dom eq 'gcitest') {
        push(@items,'firstres');
    }
    if ((ref($details) eq 'HASH') && (ref($domdefs) eq 'HASH')) {
        my $emailenc = &escape($owneremail);
        my $owner = $details->{'owner'}.':'.$details->{'domain'};
        foreach my $item (@items) {
            $batchhash{$item} = $details->{$item};
        }
        $batchhash{'title'} = $details->{'cdescr'};
        $batchhash{'coursecode'} = $details->{'instcode'};
        $batchhash{'emailenc'} = $emailenc;
        $batchhash{'adds'} = $details->{'autoadds'};
        $batchhash{'drops'} = $details->{'autodrops'};
        $batchhash{'authtype'} = $domdefs->{'auth_def'};
        $batchhash{'authparam'} = $domdefs->{'auth_arg_def'};
        if ($details->{'crstype'} eq 'community') {
            $batchhash{'crstype'} = 'Community';
        } else {
            $batchhash{'crstype'} = 'Course';
        }
        my ($owner_firstname,$owner_lastname);
        if ($context eq 'domain') {
            my %userenv = &Apache::lonnet::userenvironment($details->{'domain'},
                                                           $details->{'owner'},
                                                           'firstname','lastname');
            $owner_firstname = $userenv{'firstname'};
            $owner_lastname = $userenv{'lastname'};
        } else {
            $owner_firstname = $env{'environment.firstname'};
            $owner_lastname = $env{'environment.lastname'};
        }
        if (ref($details->{'personnel'}) eq 'HASH') {
            %{$batchhash{'users'}} = %{$details->{'personnel'}};
            if (ref($batchhash{'users'}) eq 'HASH') {  
                foreach my $userkey (keys(%{$batchhash{'users'}})) {
                    if (ref($batchhash{'users'}{$userkey}) eq 'HASH') {
                        if (ref($batchhash{'users'}{$userkey}{'roles'}) eq 'ARRAY') {
                            foreach my $role (@{$batchhash{'users'}{$userkey}{'roles'}}) {
                                my $start = '';
                                my $end = '';
                                if ($role eq 'st') {
                                    $start = $details->{'accessstart'};
                                    $end = $details->{'accessend'};
                                }
                                $batchhash{'users'}{$userkey}{$role}{'start'} = $start;
                                $batchhash{'users'}{$userkey}{$role}{'end'} = $end;
                            } 
                        }
                    }
                }
            }
        }
        $batchhash{'users'}{$owner}{firstname} = $owner_firstname;
        $batchhash{'users'}{$owner}{lastname} = $owner_lastname;
        $batchhash{'users'}{$owner}{emailenc} = $emailenc;
        $batchhash{'users'}{$owner}{owneremail} = $owneremail;
    }
    return %batchhash;
}

sub can_clone_course {
    my ($uname,$udom,$clonecrs,$clonedom,$crstype) = @_;
    my $canclone;
    my $ccrole = 'cc';
    if ($crstype eq 'community') {
        $ccrole = 'co';
    }
    my %roleshash = &Apache::lonnet::get_my_roles($uname,$udom,'userroles',['active'],
                                                  [$ccrole],[$clonedom]);
    if (exists($roleshash{$clonecrs.':'.$clonedom.':'.$ccrole})) {
        $canclone = 1;
    } else {
        my %courseenv = &Apache::lonnet::userenvironment($clonedom,$clonecrs,('cloners'));
        my $cloners = $courseenv{'cloners'};
        if ($cloners ne '') {
            my @cloneable = split(',',$cloners);
            if (grep(/^\*$/,@cloneable)) {
                $canclone = 1;
            }
            if (grep(/^\*:\Q$udom\E$/,@cloneable)) {
                $canclone = 1;
            }
            if (grep(/^\Q$uname\E:\Q$udom\E$/,@cloneable)) {
                $canclone = 1;
            }
        }
        unless ($canclone) {
            if (&Apache::lonnet::is_course_owner($clonedom,$clonecrs,$uname,$udom)) {
                $canclone = 1;
            }
        }
    }
    return $canclone;
}

sub queued_selfenrollment {
    my ($notitle) = @_;
    my $output;
    my %selfenrollrequests = &Apache::lonnet::dump('selfenrollrequests');
    my %reqs_by_date;
    foreach my $item (keys(%selfenrollrequests)) {
        if (ref($selfenrollrequests{$item}) eq 'HASH') {
            if ($selfenrollrequests{$item}{'status'} eq 'request') {
                if ($selfenrollrequests{$item}{'timestamp'}) {
                    push(@{$reqs_by_date{$selfenrollrequests{$item}{'timestamp'}}},$item);
                }
            }
        }
    }
    if (keys(%reqs_by_date)) {
        unless ($notitle) {
            $output .= '<b>'.&mt('Enrollment requests pending Course Coordinator approval').'</b><br />';
        }
        $output .= &Apache::loncommon::start_data_table().
                   &Apache::loncommon::start_data_table_header_row().
                   '<th>'.&mt('Date requested').'</th><th>'.&mt('Course title').'</th>'.
                   '<th>'.&mt('User role').'</th><th>'.&mt('Section').'</th>'.
                   &Apache::loncommon::end_data_table_header_row();
        my @sorted = sort { $a <=> $b } (keys(%reqs_by_date));
        foreach my $item (@sorted) {
            if (ref($reqs_by_date{$item}) eq 'ARRAY') {
                foreach my $crs (@{$reqs_by_date{$item}}) {
                    my %courseinfo = &Apache::lonnet::coursedescription($crs);
                    my $usec = $selfenrollrequests{$crs}{'section'};
                    my $rolename = &Apache::lonnet::plaintext('st',$courseinfo{'type'},$crs);
                    if ($usec eq '') {
                        $usec = &mt('No section');
                    }
                    $output .= &Apache::loncommon::start_data_table_row().
                               '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'.
                               '<td>'.$courseinfo{'description'}.'</td>'.
                               '<td>'.$rolename.'</td><td>'.$usec.'</td>'.
                               &Apache::loncommon::end_data_table_row();
                }
            }
        }
        $output .= &Apache::loncommon::end_data_table();
    }
    return $output;
}

1;