--- loncom/interface/coursecatalog.pm	2007/01/12 23:37:22	1.18
+++ loncom/interface/coursecatalog.pm	2008/03/08 04:00:53	1.27
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler for displaying the course catalog interface
 #
-# $Id: coursecatalog.pm,v 1.18 2007/01/12 23:37:22 raeburn Exp $
+# $Id: coursecatalog.pm,v 1.27 2008/03/08 04:00:53 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -46,22 +46,24 @@ sub handler {
     if ($r->header_only) {
         return OK;
     }
-    my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
-    my $lonid=$cookies{'lonID'};
+    my $handle = &Apache::lonnet::check_for_valid_session($r);
     my $lonidsdir=$r->dir_config('lonIDsDir');
-    my $handle;
-    if ($lonid) {
-	$handle=&LONCAPA::clean_handle($lonid->value);
-    }
-    if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
+    if ($handle ne '') {
         &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
     }
     &Apache::lonacc::get_posted_cgi($r);
     &Apache::lonlocal::get_language_handle($r);
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sortby']);
-    my $codedom = $Apache::lonnet::perlvar{'lonDefDomain'};
+    my $codedom = &Apache::lonnet::default_login_domain(); 
+
+    if (($env{'user.domain'} ne '') && ($env{'user.domain'} ne 'public')) { 
+        $codedom = $env{'user.domain'};
+        if ($env{'request.role.domain'} ne '') {
+            $codedom = $env{'request.role.domain'};
+        }
+    }
     my $formname = 'coursecatalog';
-    my $domdesc = $Apache::lonnet::domaindescription{$codedom};
+    my $domdesc = &Apache::lonnet::domain($codedom,'description');
 
     &Apache::lonhtmlcommon::clear_breadcrumbs();
     if ($env{'form.coursenum'} ne '' && &user_is_known()) {
@@ -87,10 +89,13 @@ sub course_details {
                                              'add_entries' => \%add_entries,
                                              'no_inline_link'   => 1,});
     $r->print($start_page);
+    if ($env{'form.numtitles'} > 0) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+                ({href=>"/adm/coursecatalog",
+                  text=>"Select courses"});
+    }
     &Apache::lonhtmlcommon::add_breadcrumb
-            ({href=>"/adm/coursecatalog",
-              text=>"Select courses"},
-             {href=>"javascript:document.$formname.submit()",
+             ({href=>"javascript:document.$formname.submit()",
               text=>"Course listing"},
              {text=>"Course details"});
     $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Details'));
@@ -123,7 +128,7 @@ sub course_selector {
     my $totcodes = 0;
     my $jscript = '';
     my ($numtitles,$lasttitle);
-    $totcodes = &Apache::courseclassifier::retrieve_instcodes(\%coursecodes,$codedom,$totcodes);
+    $totcodes = &Apache::courseclassifier::retrieve_instcodes(\%coursecodes,$codedom);
     if ($totcodes > 0) {
         $format_reply = &Apache::lonnet::auto_instcode_format($caller,$codedom,\%coursecodes,\%codes,\@codetitles,\%cat_titles,\%cat_order);
         if ($format_reply eq 'ok') {
@@ -204,11 +209,16 @@ function setCourseId(caller) {
                                              'no_inline_link'   => 1,});
         $r->print($start_page);
         if ($env{'form.state'} eq 'listing') {
-            &Apache::lonhtmlcommon::add_breadcrumb
-            ({href=>"/adm/coursecatalog",
-              text=>"Select courses"},
-             {text=>"Course listing"});
-             $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Listing'));
+            if ($numtitles > 0) {
+                &Apache::lonhtmlcommon::add_breadcrumb
+                ({href=>"/adm/coursecatalog",
+                  text=>"Select courses"},
+                 {text=>"Course listing"});
+            } else {
+                &Apache::lonhtmlcommon::add_breadcrumb
+                ({text=>"Course listing"});
+            }
+            $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Listing'));
         } else {
             &Apache::lonhtmlcommon::add_breadcrumb
             ({href=>"/adm/coursecatalog",
@@ -221,8 +231,10 @@ function setCourseId(caller) {
             $r->print(&mt('<b>Choose which course(s) to list.</b><br />'));
             $r->print('<table><tr>');
             for (my $k=0; $k<$lasttitle-1; $k++) {
-                my @unsorted = @{$cat_items{$codetitles[$k]}};
-                my @items;
+                my (@items,@unsorted);
+                if (ref($cat_items{$codetitles[$k]}) eq 'ARRAY') {
+                    @unsorted = @{$cat_items{$codetitles[$k]}};
+                }
                 &Apache::courseclassifier::sort_cats($k,\%cat_order,\@codetitles,\@unsorted,\@items);
                 my @longitems;
                 if (defined($cat_titles{$codetitles[$k]})) {
@@ -249,12 +261,18 @@ function setCourseId(caller) {
                       '</option>'."\n".'</select>'."\n".
                  '</td>'
                 );
+            my $show_selfenroll_status;
+            if ($env{'form.showselfenroll'}) {
+                $show_selfenroll_status = 'checked="checked" ';
+            }
             if (&user_is_dc($codedom)) {
                 my $showdetails_status;
                 if ($env{'form.showdetails'}) {
                     $showdetails_status = 'checked="checked" ';
-                } 
-                $r->print('<td></td><td><input type="checkbox" name="showdetails" value="1" '.$showdetails_status.'/>'.&mt('Show full details for each course (DC only)').'</td>');
+                }
+                $r->print('<td></td><td><label><input type="checkbox" name="showdetails" value="1" '.$showdetails_status.'/>'.&mt('Show full details for each course (DC only)').'</label><br /><label><input type="checkbox" name="showselfenroll" value="1" '.$show_selfenroll_status.'/>'.&mt('Only show courses which allow self-enrollment').'</label></td>');
+            } else {
+                $r->print('<td></td><td><br /><label><input type="checkbox" name="showselfenroll" value="1" '.$show_selfenroll_status.'/>'.&mt('Only show courses which allow self-enrollment').'</label></td>');
             }
             $r->print('</tr></table>');
             if ($numtitles > 4) {
@@ -267,7 +285,8 @@ function setCourseId(caller) {
         if ($numtitles > 0) {
             $r->print('<input type="submit" name="catalogfilter" value="'.&mt('Display courses').'" />');
         }
-        $r->print('</form>');
+        $r->print('<input type="hidden" name="numtitles" value="'.
+                  $numtitles.'" /></form>');
         if (($numtitles > 0) && ($env{'form.state'} eq 'listing')) {
             $r->print('<br /><br />');
         }
@@ -401,7 +420,8 @@ sub search_courselist {
         }
     }
     my %courses = &Apache::lonnet::courseiddump($domain,'.',1,$instcode,'.','.',
-                                                undef,undef,'Course',1);
+                                                undef,undef,'Course',1,
+                                                $env{'form.showselfenroll'});
     return %courses;
 }
 
@@ -420,7 +440,7 @@ sub print_course_listing {
     if ($env{'form.coursenum'} ne '') {
         %courses = &Apache::lonnet::courseiddump($domain,'.',1,'.','.',
                                                  $env{'form.coursenum'},
-                                                 undef,undef,'Course');
+                                                 undef,undef,'Course',1);
         if (keys(%courses) == 0) {
             $output .= &mt('The courseID provided does not match a course in this domain.');
             return $output;
@@ -435,22 +455,25 @@ sub print_course_listing {
             $output = &mt('<b>Note for students:</b> If you are officially enrolled in a course but the course is not listed in your LON-CAPA courses, click the "Show more details" link for the specific course and check the default access dates and/or automated enrollment settings.<br /><br />');
         }
     }
-    $output .= &construct_data_table($knownuser,\%courses,$details);
+    my $now = time;
+    my %domconfig =
+        &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
+    $output .= &construct_data_table($knownuser,\%courses,$details,undef,$now,\%domconfig);
     $output .= &Apache::lonhtmlcommon::echo_form_input(['coursenum','state','catalogfilter','sortby','showdetails']);
     return $output;
 }
 
 sub construct_data_table {
-    my ($knownuser,$courses,$details,$usersections) = @_;
+    my ($knownuser,$courses,$details,$usersections,$now,$domconfig) = @_;
     my %sortname;
     if (($details eq '') || ($env{'form.showdetails'})) {
         $sortname{'Code'} = 'code';
         $sortname{'Title'} = 'title';
-        $sortname{'Owner'} = 'owner';
+        $sortname{'Owner(s)'} = 'owner';
     }
     my $output = &Apache::loncommon::start_data_table().
                  &Apache::loncommon::start_data_table_header_row();
-    my @coltitles = ('Code','Sections','Crosslisted','Title','Owner');
+    my @coltitles = ('Count','Code','Sections','Crosslisted','Title','Owner(s)');
     if (ref($usersections) eq 'HASH') {
        $coltitles[1] = 'Your Section';
     }
@@ -458,6 +481,8 @@ sub construct_data_table {
         $output .= '<th>';
         if (defined($sortname{$item})) {
             $output .= '<a href="javascript:changeSort('."'$sortname{$item}'".')">'.&mt($item).'</a>';
+        } elsif ($item eq 'Count') {
+            $output .= '&nbsp;&nbsp;';
         } else {
             $output .= &mt($item);
         }
@@ -470,9 +495,10 @@ sub construct_data_table {
               '<th>'.&mt('Student Counts').'</th>'.
               '<th>'.&mt('Auto-enrollment of <br />registered students').'</th>';
         } else {
-            $output .= '<th>&nbsp;</th>';
+            $output .= '<th>'.&mt('Details').'</th>';
         }
     }
+    $output .= '<th>'.&mt('Self-enroll (if permitted)').'</th>';
     &Apache::loncommon::end_data_table_header_row();
     my %courseinfo = &build_courseinfo_hash($courses,$knownuser,$details,
                                             $usersections);
@@ -481,9 +507,14 @@ sub construct_data_table {
         if ($env{'form.sortby'} eq 'code') {
             push(@{$Sortby{$courseinfo{$course}{'code'}}},$course);
         } elsif ($env{'form.sortby'} eq 'owner') {
-            push(@{$Sortby{$courseinfo{$course}{'ownerlastname'}}},$course);
+            push(@{$Sortby{$courseinfo{$course}{'ownerlastnames'}}},$course);
         } else {
-            push(@{$Sortby{$courseinfo{$course}{'title'}}},$course);
+            my $clean_title = $courseinfo{$course}{'title'};
+            $clean_title =~ s/\W+//g;
+            if ($clean_title eq '') {
+                $clean_title = $courseinfo{$course}{'title'};
+            }
+            push(@{$Sortby{$clean_title}},$course);
         }
     }
     my @sorted_courses;
@@ -492,10 +523,12 @@ sub construct_data_table {
     } else {
         @sorted_courses = sort { lc($a) cmp lc($b) } (keys(%Sortby));
     }
+    my $count = 1;
     foreach my $item (@sorted_courses) {
         foreach my $course (@{$Sortby{$item}}) {
             $output.=&Apache::loncommon::start_data_table_row(); 
-            $output.=&courseinfo_row($courseinfo{$course},$knownuser,$details);
+            $output.=&courseinfo_row($courseinfo{$course},$knownuser,
+                                     $details,\$count,$now,$course);
             $output.=&Apache::loncommon::end_data_table_row();
         }
     }
@@ -509,37 +542,60 @@ sub build_courseinfo_hash {
     my $now = time;
     foreach my $course (keys(%{$courses})) {
         my $descr;
-        if ($courses->{$course} =~ m/^([^:]*):/i) {
-            $descr = &unescape($1);
-        } else {
-            $descr = &unescape($courses->{$course});
+        if (ref($courses->{$course}) eq 'HASH') {
+            $descr = $courses->{$course}{'description'}; 
         }
         my $cleandesc=&HTML::Entities::encode($descr,'<>&"');
         $cleandesc=~s/'/\\'/g;
         $cleandesc =~ s/^\s+//;
         my ($cdom,$cnum)=split(/\_/,$course);
-
-        my ($desc,$instcode,$owner,$ttype) = split(/:/,$courses->{$course});
-        $owner = &unescape($owner);
-        my ($ownername,$ownerdom);
-        if ($owner =~ /:/) {
-            ($ownername,$ownerdom) = split(/:/,$owner);
-        } else {
-            $ownername = $owner;
-            if ($owner ne '') {
-                $ownerdom = $cdom;
+        my ($descr,$instcode,$singleowner,$ttype,$selfenroll_types,
+            $selfenroll_start,$selfenroll_end,@owners,%ownernames);
+        if (ref($courses->{$course}) eq 'HASH') {
+            $descr = $courses->{$course}{'description'};
+            $instcode =  $courses->{$course}{'inst_code'};
+            $singleowner = $courses->{$course}{'owner'};
+            $ttype =  $courses->{$course}{'type'};
+            $selfenroll_types = $courses->{$course}{'selfenroll_types'};
+            $selfenroll_start = $courses->{$course}{'selfenroll_start_date'};
+            $selfenroll_end = $courses->{$course}{'selfenroll_end_date'};
+            push(@owners,$singleowner);
+            if (ref($courses->{$course}{'co-owners'}) eq 'ARRAY') {
+                foreach my $item (@{$courses->{$course}{'co-owners'}}) {
+                    push(@owners,$item);
+                }
             }
         }
-        my %ownernames;
-        if ($ownername ne '' && $ownerdom ne '') {
-            %ownernames = &Apache::loncommon::getnames($ownername,$ownerdom);
+        foreach my $owner (@owners) {
+            my ($ownername,$ownerdom) = @_; 
+            if ($owner =~ /:/) {
+                ($ownername,$ownerdom) = split(/:/,$owner);
+            } else {
+                $ownername = $owner;
+                if ($owner ne '') {
+                    $ownerdom = $cdom;
+                }
+            }
+            if ($ownername ne '' && $ownerdom ne '') {
+                my %namehash=&Apache::loncommon::getnames($ownername,$ownerdom);
+                $ownernames{$ownername.':'.$ownerdom} = \%namehash; 
+            }
         }
         $courseinfo{$course}{'cdom'} = $cdom;
         $courseinfo{$course}{'cnum'} = $cnum;
         $courseinfo{$course}{'code'} = $instcode;
-        $courseinfo{$course}{'ownerlastname'} = $ownernames{'lastname'};
+        my @lastnames;
+        foreach my $owner (keys(%ownernames)) {
+            if (ref($ownernames{$owner}) eq 'HASH') {
+                push(@lastnames,$ownernames{$owner}{'lastname'});
+            }
+        }
+        $courseinfo{$course}{'ownerlastnames'} = join(', ',sort(@lastnames));
         $courseinfo{$course}{'title'} = $cleandesc;
-        $courseinfo{$course}{'owner'} = $owner;
+        $courseinfo{$course}{'owner'} = $singleowner;
+        $courseinfo{$course}{'selfenroll_types'} = $selfenroll_types;
+        $courseinfo{$course}{'selfenroll_start'} = $selfenroll_start;
+        $courseinfo{$course}{'selfenroll_end'} = $selfenroll_end;
 
         my %coursehash = &Apache::lonnet::dump('environment',$cdom,$cnum);
         my @classids;
@@ -560,11 +616,11 @@ sub build_courseinfo_hash {
         }
         $courseinfo{$course}{'showsyllabus'} = $showsyllabus;
         if (((defined($env{'form.coursenum'}) && ($cnum eq $env{'form.coursenum'}))) ||
-            ($knownuser && ($details == 1))) {  
+            ($knownuser && ($details == 1))) {
             $courseinfo{$course}{'counts'} =  &count_students($cdom,$cnum,$numsec);
             $courseinfo{$course}{'autoenrollment'} =
                 &autoenroll_info(\%coursehash,$now,$seclist,$xlist_items,
-                                 $instcode,$owner,$cdom,$cnum);
+                                 $instcode,\@owners,$cdom,$cnum);
 
             my $startaccess = '';
             my $endaccess = '';
@@ -623,14 +679,14 @@ sub count_students {
 }
 
 sub courseinfo_row {
-    my ($info,$knownuser,$details) = @_;
+    my ($info,$knownuser,$details,$countref,$now,$course) = @_;
     my ($cdom,$cnum,$title,$ownerlast,$code,$owner,$seclist,$xlist_items,
         $accessdates,$showsyllabus,$counts,$autoenrollment,$output);
     if (ref($info) eq 'HASH') {
         $cdom = $info->{'cdom'};
         $cnum = $info->{'cnum'};
         $title = $info->{'title'};
-        $ownerlast = $info->{'ownerlastname'};
+        $ownerlast = $info->{'ownerlastnames'};
         $code = $info->{'code'};
         $owner = $info->{'owner'};
         $seclist = $info->{'seclist'};
@@ -644,7 +700,8 @@ sub courseinfo_row {
                                          $code).'</td>';
         return $output;
     }
-    $output .= '<td>'.$code.'</td>'.
+    $output .= '<td>'.$$countref.'</td>'.
+               '<td>'.$code.'</td>'.
                '<td>'.$seclist.'</td>'.
                '<td>'.$xlist_items.'</td>'.
                '<td>'.$title.'&nbsp;<font size="-2">';
@@ -665,6 +722,23 @@ sub courseinfo_row {
             $output .= "<td><a href=\"javascript:setCourseId('$cnum')\">".&mt('Show more details').'</a></td>';
         }
     }
+    my $selfenroll;
+    if ($info->{'selfenroll_types'}) {
+        my $showstart = &Apache::lonlocal::locallocaltime($info->{'selfenroll_start'});
+        my $showend = &Apache::lonlocal::locallocaltime($info->{'selfenroll_end'});
+        if (($info->{'selfenroll_end'} > 0) && ($info->{'selfenroll_end'} > $now)) {
+            if (($info->{'selfenroll_start'} > 0) && ($info->{'selfenroll_start'} > $now)) {
+                $output .= '<td>'.&mt('Starts: [_1]','<span class="LC_cusr_emph">'.$showstart.'</span>').'<br />'.&mt('Ends: [_1]','<span class="LC_cusr_emph">'.$showend.'</span>').'</td>';
+            } else { 
+                $output .= '<td><a href="/adm/selfenroll?cid='.$course.'">'.&mt('Enroll in course').'</a></td>';
+            }
+            $selfenroll = 1;
+        }
+    }
+    if (!$selfenroll) {
+        $output .= '<td>&nbsp;</td>';
+    }
+    $$countref ++;
     return $output;
 }
 
@@ -692,7 +766,7 @@ sub identify_sections {
 }
 
 sub get_valid_classes {
-    my ($seclist,$xlist_items,$crscode,$owner,$cdom,$cnum) = @_;
+    my ($seclist,$xlist_items,$crscode,$owners,$cdom,$cnum) = @_;
     my $response;
     my %validations;
     @{$validations{'sections'}} = ();
@@ -701,7 +775,7 @@ sub get_valid_classes {
     if ($seclist) {
         foreach my $sec (split(/, /,$seclist)) {
             my $class = $crscode.$sec;
-            if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owner,
+            if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owners,
 							 $class) eq 'ok') {
                 if (!grep(/^\Q$sec$\E/,@{$validations{'sections'}})) {
                     push(@{$validations{'sections'}},$sec);
@@ -712,7 +786,7 @@ sub get_valid_classes {
     }
     if ($xlist_items) {
         foreach my $item (split(/, /,$xlist_items)) {
-            if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owner,
+            if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owners,
 							 $item) eq 'ok') {
                 if (!grep(/^\Q$item$\E/,@{$validations{'xlists'}})) {
                     push(@{$validations{'xlists'}},$item);
@@ -874,7 +948,7 @@ END
 }
 
 sub autoenroll_info {
-    my ($coursehash,$now,$seclist,$xlist_items,$code,$owner,$cdom,$cnum) = @_;
+    my ($coursehash,$now,$seclist,$xlist_items,$code,$owners,$cdom,$cnum) = @_;
     my $autoenrolldates = &mt('Not enabled');
     if (defined($coursehash->{'internal.autoadds'}) && $coursehash->{'internal.autoadds'} == 1) {
         my ($autostart,$autoend);
@@ -890,7 +964,7 @@ sub autoenroll_info {
             } else {
                 my $valid_classes = 
                    &get_valid_classes($seclist,$xlist_items,$code,
-                                      $owner,$cdom,$cnum);
+                                      $owners,$cdom,$cnum);
                 if ($valid_classes ne '') {
                     $autoenrolldates = &mt('Not enabled<br />Starts: ').
                                        $autostart.'<br />'.$valid_classes;                }
@@ -900,7 +974,7 @@ sub autoenroll_info {
                 $autoenrolldates = &mt('Not enabled<br />Ended: ').$autoend;
             } else {
                 my $valid_classes = &get_valid_classes($seclist,$xlist_items,
-                                                       $code,$owner,$cdom,$cnum);
+                                                       $code,$owners,$cdom,$cnum);
                 if ($valid_classes ne '') {
                     $autoenrolldates = &mt('Currently enabled<br />').
                                        $valid_classes;