--- loncom/interface/Attic/londropadd.pm	2002/04/23 21:03:59	1.29
+++ loncom/interface/Attic/londropadd.pm	2002/08/01 16:48:21	1.44
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to drop and add students in courses 
 #
-# $Id: londropadd.pm,v 1.29 2002/04/23 21:03:59 matthew Exp $
+# $Id: londropadd.pm,v 1.44 2002/08/01 16:48:21 bowersj2 Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -62,20 +62,20 @@ sub header {
     return(<<ENDHEAD);
 <html>
 <head>
-<title>LON-CAPA Student Drop/Add</title>
+<title>LON-CAPA Enrollment Manager</title>
 </head>
 <body bgcolor="#FFFFFF">
 <img align=right src=/adm/lonIcons/lonlogos.gif>
-<h1>Drop/Add Students</h1>
-<form method="post" enctype="multipart/form-data"
-action="/adm/dropadd" name="studentform">
-<h2>Course: $ENV{'course.'.$ENV{'request.course.id'}.'.description'}</h2>
+<h1>$ENV{'course.'.$ENV{'request.course.id'}.'.description'}</h1>
+<h2>Enrollment Manager</h2>
+<form method="post" enctype="multipart/form-data"  
+      action="/adm/dropadd" name="studentform">
 ENDHEAD
 }
 
 # =========== Drop student from all sections of a course, except optional $csec
 sub modifystudent {
-    my ($udom,$unam,$courseid,$csec)=@_;
+    my ($udom,$unam,$courseid,$csec,$desiredhost)=@_;
     # if $csec is undefined, drop the student from all the courses matching
     # this one.  If $csec is defined, drop them from all other sections of 
     # this course and add them to section $csec
@@ -84,42 +84,93 @@ sub modifystudent {
     my %roles = &Apache::lonnet::dump('roles',$udom,$unam);
     my ($tmp) = keys(%roles);
     # Bail out if we were unable to get the students roles
-    return if ($tmp =~ /^(con_lost|error|no_such_host)/i);
+    return "$1" if ($tmp =~ /^(con_lost|error|no_such_host)/i);
     # Go through the roles looking for enrollment in this course
+    my $result = '';
     foreach my $course (keys(%roles)) {
-        my $value = $roles{$course};
-        if ($course=~/^$courseid(?:\/)*(\w+)*\_st$/) {
+        if ($course=~/^$courseid(?:\/)*(?:\s+)*(\w+)*\_st$/) {
             # We are in this course
             my $section=$1;
             $section='' if ($course eq $courseid.'_st');
-            if (((!$section) && (!$csec)) || ($section ne $csec)) {
+            if ( ((!$section) && (!$csec)) || ($section ne $csec) ) {
                 my (undef,$end,$start)=split(/\_/,$roles{$course});
                 my $now=time;
                 if (!($start && ($now<$start)) || !($end && ($now>$end))) {
                     my $reply=&Apache::lonnet::modifystudent
-                        ($udom,$unam,'','','','','','','',$section,time);
+                        ($udom,$unam,'','','','','','','',
+                         $section,time,undef,undef,$desiredhost);
+                    $result .= $reply.':';
                 }
             }
         }
     }
+    if ($result eq '') {
+        $result eq 'Unable to find section for this student';
+    } else {
+        $result =~ s/(ok:)+/ok/g;
+    }
+    return $result;
+}
+
+# ============ build a domain and server selection form
+sub domain_form {
+    my ($defdom) = @_;
+    # Set up domain and server selection forms
+    #
+    # Get the domains
+    my @domains = &Apache::loncommon::get_domains();
+    # build up the menu information to be passed to 
+    # &Apache::loncommon::linked_select_forms
+    my %select_menus;
+    foreach my $dom (@domains) {
+        # set up the text for this domain
+        $select_menus{$dom}->{'text'}= $dom;
+        # we want a choice of 'default' as the default in the second menu
+        $select_menus{$dom}->{'default'}= 'default';
+        $select_menus{$dom}->{'select2'}->{'default'} = 'default';
+        # Now build up the other items in the second menu
+        my %servers = &Apache::loncommon::get_home_servers($dom);
+        foreach my $server (keys(%servers)) {
+            $select_menus{$dom}->{'select2'}->{$server} 
+                                            = "$server $servers{$server}";
+        }
+    }
+    my $result  = &Apache::loncommon::linked_select_forms
+        ('studentform',' with home server ',$defdom,
+         'lcdomain','lcserver',\%select_menus);
+    return $result;
 }
 
 # ============================================================== Menu Phase One
 sub menu_phase_one {
     my $r=shift;
     my $upfile_select=&Apache::loncommon::upfile_select_html();
+    my $create_classlist_help = 
+	&Apache::loncommon::help_open_topic("Course_Create_Class_List",
+           "How do I create a class list from a spreadsheet");
+    my $create_csv_help =
+	&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
+           "How do I create a CSV file from a spreadsheet");
     $r->print(<<ENDUPFORM);
 <input type=hidden name=phase value=two>
 <hr>
 <h3>Upload a courselist</h3>
 $upfile_select
-<p><input type=submit name=fileupload value="Upload Courselist">
-<hr>
+<p><input type=submit name="fileupload" value="Upload Courselist">
+<br />
+$create_classlist_help <br />
+$create_csv_help
+
+<hr />
 <h3>Enroll a single student</h3>
-<p><input type=submit name=enroll value="Enroll Student">
-<hr>
+<p><input type=submit name="enroll" value="Enroll Student"></p>
+<hr />
+<h3>Classlist</h3>
+<p><input type=submit name="view" value="View Class List">
+<input type=submit name="viewcsv" value="Comma Separated Class List"></p>
+<hr />
 <h3>Drop students</h3>
-<p><input type=submit name=drop value="Selection List">
+<p><input type=submit name="drop" value="Selection List"></p>
 ENDUPFORM
 }
 
@@ -133,12 +184,14 @@ sub phase_two_header {
     }
     my $javascript_validations=&javascript_validations($krbdefdom);
     $r->print(<<ENDPICK);
+<h3>Uploading Class List</h3>
 <hr>
 <h3>Identify fields</h3>
 Total number of records found in file: $distotal <hr />
 Enter as many fields as you can. The system will inform you and bring you back
 to this page if the data selected is insufficient to run your class.<hr />
-<input type="submit" name="associate"  value="Reverse Association" />
+<input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
+<input type="hidden" name="associate"  value="" />
 <input type="hidden" name="phase"      value="three" />
 <input type="hidden" name="datatoken"  value="$datatoken" />
 <input type="hidden" name="fileupload" value="$ENV{'form.fileupload'}" />
@@ -382,8 +435,7 @@ sub phase_two_end {
     my $krbform = &Apache::loncommon::authform_kerberos(%param);
     my $intform = &Apache::loncommon::authform_internal(%param);
     my $locform = &Apache::loncommon::authform_local(%param);
-    # Set up domain selection form
-    my $domform = &Apache::loncommon::select_dom_form($defdom,'lcdomain');    
+    my $domform = &domain_form($defdom);
     $r->print(<<ENDPICK);
 </table>
 <input type=hidden name=nfields value=$i>
@@ -421,7 +473,7 @@ LON-CAPA domain: $domform <p>
 <input type=checkbox name=forceid value=yes> 
 Disable ID/Student Number Safeguard and Force Change of Conflicting IDs
 (only do if you know what you are doing)<p>
-<input type="button" onClick="verify(this.form)" value="Update Courselist"><br>
+<input type="button" onClick="javascript:verify(this.form)" value="Update Courselist" /><br />
 Note: for large courses, this operation might be time consuming.
 ENDPICK
 }
@@ -474,9 +526,25 @@ sub menu_phase_two_upload {
 sub enroll_single_student {
     my $r=shift;
     $r->print('<h3>Enrolling Student</h3>');
-    $r->print($ENV{'form.cuname'}." in domain ".$ENV{'form.cdomain'}.": ");
+    $r->print('<p>Enrolling '.$ENV{'form.cuname'}." in domain ".
+              $ENV{'form.lcdomain'}.'</p>');
     if (($ENV{'form.cuname'})&&($ENV{'form.cuname'}!~/\W/)&&
-        ($ENV{'form.cdomain'})&&($ENV{'form.cdomain'}!~/\W/)) {
+        ($ENV{'form.lcdomain'})&&($ENV{'form.lcdomain'}!~/\W/)) {
+        # Deal with home server selection
+        my $domain=$ENV{'form.lcdomain'};
+        my $desiredhost = $ENV{'form.lcserver'};
+        if (lc($desiredhost) eq 'default') {
+            $desiredhost = undef;
+        } else {
+            my %home_servers = &Apache::loncommon::get_home_servers($domain);
+            if (! exists($home_servers{$desiredhost})) {
+                $r->print('<font color="#ff0000">Error:</font>'.
+                          'Invalid home server specified');
+                return;
+            }
+        }
+        $r->print(" with server $desiredhost :") if (defined($desiredhost));
+        # End of home server selection logic
 	my $amode='';
         my $genpwd='';
         if ($ENV{'form.login'} eq 'krb') {
@@ -490,18 +558,24 @@ sub enroll_single_student {
 	    $genpwd=$ENV{'form.locarg'};
 	    if (!$genpwd) { $genpwd=" "; }
 	}
-        if (($amode) && ($genpwd)) {
-            &modifystudent($ENV{'form.cdomain'},$ENV{'form.cuname'},
-                           $ENV{'request.course.id'},$ENV{'form.csec'});
+        my $home = &Apache::lonnet::homeserver($ENV{'form.cuname'},
+                                                   $ENV{'form.lcdomain'});
+        if ((($amode) && ($genpwd)) || ($home ne 'no_host')) {
+            &modifystudent($ENV{'form.lcdomain'},$ENV{'form.cuname'},
+                           $ENV{'request.course.id'},$ENV{'form.csec'},
+                            $desiredhost);
           $r->print(&Apache::lonnet::modifystudent(
-                      $ENV{'form.cdomain'},$ENV{'form.cuname'},
+                      $ENV{'form.lcdomain'},$ENV{'form.cuname'},
                       $ENV{'form.cstid'},$amode,$genpwd,
  	              $ENV{'form.cfirst'},$ENV{'form.cmiddle'},
                       $ENV{'form.clast'},$ENV{'form.cgen'},
                       $ENV{'form.csec'},$ENV{'form.enddate'},
-                      $ENV{'form.startdate'},$ENV{'form.forceid'}));
+                      $ENV{'form.startdate'},$ENV{'form.forceid'},
+                    $desiredhost));
 	} else {
-           $r->print('Invalid login mode or password');    
+            $r->print('<p><font color="#ff0000">ERROR</font>&nbsp;'.
+                      'Invalid login mode or password.  '.
+                      'Unable to enroll '.$ENV{'form.cuname'}.'.</p>');
         }          
     } else {
         $r->print('Invalid username or domain');
@@ -511,6 +585,7 @@ sub enroll_single_student {
 # ======================================================= Menu Phase Two Enroll
 sub menu_phase_two_enroll {
     my $r=shift;
+    $r->print("<h3>Enroll One Student</h3>");
     my ($krbdefdom) = $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
     $krbdefdom=~tr/a-z/A-Z/;
     my $today    = time;
@@ -523,7 +598,7 @@ sub menu_phase_two_enroll {
     my $intform = &Apache::loncommon::authform_internal(%param);
     my $locform = &Apache::loncommon::authform_local(%param);
     # Set up domain selection form
-    my $domform = &Apache::loncommon::select_dom_form($defdom,'cdomain');    
+    my $domform = &domain_form($defdom);
     # Print it all out
     $r->print(<<ENDSENROLL);
 <script type="text/javascript" language="Javascript">
@@ -535,7 +610,7 @@ function verify(vf) {
     var foundsec=0;
     var tw;
     if ((typeof(vf.cuname.value) !="undefined") && (vf.cuname.value!='') && 
-	(typeof(vf.cdomain.value)!="undefined") && (vf.cdomain.value!='')) {
+	(typeof(vf.lcdomain.value)!="undefined") && (vf.lcdomain.value!='')) {
         founduname=1;
     }
     if ((typeof(vf.cfirst.value)!="undefined") && (vf.cfirst.value!='') &&
@@ -628,6 +703,7 @@ sub get_current_classlist {
         }
         return (undef,%currentlist);
     } else {
+        $tmp =~ s/^error://;
         return ($tmp,undef);
     }
 }
@@ -635,13 +711,17 @@ sub get_current_classlist {
 # ========================================================= Menu Phase Two Drop
 sub menu_phase_two_drop {
     my $r=shift;
+    $r->print("<h3>Drop Students</h3>");
     my $cid=$ENV{'request.course.id'};
-    my ($error,%currentlist)=&get_current_classlist($ENV{'course.'.$cid.'.domain'},
-                                           $ENV{'course.'.$cid.'.num'});
+    my ($error,%currentlist)=&get_current_classlist
+        ($ENV{'course.'.$cid.'.domain'},$ENV{'course.'.$cid.'.num'});
     if (defined($error)) {
-        $r->print('<pre>ERROR:$error</pre>');
-    }
-    if (!defined(%currentlist)) { 
+        if ($error =~ /^No such file or directory/) {
+            $r->print("There are no students currently enrolled.\n");
+        } else {
+            $r->print("<pre>ERROR:$error</pre>");
+        }
+    } elsif (!defined(%currentlist)) { 
         $r->print("There are no students currently enrolled.\n");
     } else {
         # Print out the available choices
@@ -649,11 +729,126 @@ sub menu_phase_two_drop {
     }
 }
 
+# ============================================== view classlist
+sub menu_phase_two_view {
+    my $r=shift;
+    $r->print("<h3>Current Classlist</h3>");
+    my $cid=$ENV{'request.course.id'};
+    my ($error,%currentlist)=&get_current_classlist
+        ($ENV{'course.'.$cid.'.domain'},$ENV{'course.'.$cid.'.num'});
+    if (defined($error)) {
+        if ($error =~ /^No such file or directory/) {
+            $r->print("There are no students currently enrolled.\n");
+        } else {
+            $r->print("<pre>ERROR:$error</pre>");
+        }
+    } elsif (!defined(%currentlist)) { 
+        $r->print("There are no students currently enrolled.\n");
+    } else {
+        # Print out the available choices
+        &show_class_list($r,'view',%currentlist);
+    }
+}
+
+# ============================================== view classlist
+sub menu_phase_two_viewcsv {
+    my $r=shift;
+    my $cid=$ENV{'request.course.id'};
+    my ($error,%currentlist)=&get_current_classlist
+        ($ENV{'course.'.$cid.'.domain'},$ENV{'course.'.$cid.'.num'});
+    if (defined($error)) {
+        if ($error =~ /^No such file or directory/) {
+            $r->print("There are no students currently enrolled.\n");
+        } else {
+            $r->print("<pre>ERROR:$error</pre>");
+        }
+    } elsif (!defined(%currentlist)) { 
+        $r->print("There are no students currently enrolled.\n");
+    } else {
+        &show_class_list($r,'csv',%currentlist);
+    }
+}
+
+# =================================================== Show student list to drop
+sub show_class_list {
+    my ($r,$mode,%currentlist)=@_;
+    my $cid=$ENV{'request.course.id'};
+    # Print out header 
+    if ($mode eq 'view') {
+        $r->print(<<END);
+<p>
+<table border=2>
+<tr><th>username</th><th>domain</th><th>ID</th>
+    <th>student name</th><th>generation</th><th>section</th></tr>
+END
+    } elsif ($mode eq 'csv') {
+        $r->print(<<END);
+username,domain,ID,last name,first name,middle name,generation,section
+END
+    }
+    foreach (sort keys %currentlist) {
+        my ($sname,$sdom)=split(/\:/,$_);
+        my %reply=&Apache::lonnet::idrget($sdom,$sname);
+        my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
+        my %info=&Apache::lonnet::get('environment',
+                                      ['firstname','middlename',
+                                       'lastname','generation'],
+                                      $sdom, $sname);
+        my ($tmp) = keys(%info);
+        if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
+            $r->print( ($mode eq 'view' ? 
+                       '<tr><td colspan="6"><font color="red">' :'').
+                       'Internal error: unable to get environment '.
+                       'for '.$sname.' in domain '.$sdom.
+                       ( $mode eq 'view' ?'</font></td></tr>' :''));
+        } else {
+            if ($mode eq 'view') {
+                $r->print(<<"END");
+<tr>
+    <td>$sname</td>
+    <td>$sdom</td>
+    <td>$reply{$sname}</td>
+    <td>$info{'lastname'}, $info{'firstname'} $info{'middlename'}</td>
+    <td>$info{'generation'}</td>
+    <td>$ssec</td>
+</tr>
+END
+            } elsif ($mode eq 'csv') {
+                my @line = ();
+                foreach ($sname,$sdom,$reply{$sname},
+                         $info{'lastname'},$info{'firstname'},
+                         $info{'middlename'},$info{'generation'},$ssec) {
+                    push @line,&Apache::loncommon::csv_translate($_);
+                }
+                my $tmp = $";
+                $" = '","';
+                $r->print("\"@line\"\n");
+                $" = $tmp;
+            }
+        }
+    }
+    $r->print('</table><br>') if ($mode eq 'view');
+}
+
 # =================================================== Show student list to drop
 sub show_drop_list {
     my ($r,%currentlist)=@_;
     my $cid=$ENV{'request.course.id'};
     $r->print(<<'END');
+<script>
+function checkAll(field)
+{
+    for (i = 0; i < field.length; i++)
+        field[i].checked = true ;
+}
+
+function uncheckAll(field)
+{
+    for (i = 0; i < field.length; i++)
+        field[i].checked = false ;
+}
+</script>
+<p>
 <input type="hidden" name="phase" value="four">
 <table border=2>
 <tr><th>&nbsp;</th><th>username</th><th>domain</th>
@@ -688,7 +883,12 @@ END
         }
     }
     $r->print('</table><br>');
-    $r->print('<input type=submit value="Drop Students">');
+    $r->print(<<"END");
+</p><p>
+<input type="button" value="check all" onclick="javascript:checkAll(document.studentform.droplist)"> &nbsp;
+<input type="button" value="uncheck all" onclick="javascript:uncheckAll(document.studentform.droplist)"> 
+<p><input type=submit value="Drop Students"></p>
+END
 }
 
 # ================================================= Drop/Add from uploaded file
@@ -713,8 +913,19 @@ sub upfile_drop_add {
     my $enddate   = $ENV{'form.enddate'};
     if ($startdate=~/\D/) { $startdate=''; }
     if ($enddate=~/\D/)   { $enddate=''; }
-    #
+    # Determine domain and desired host (home server)
     my $domain=$ENV{'form.lcdomain'};
+    my $desiredhost = $ENV{'form.lcserver'};
+    if (lc($desiredhost) eq 'default') {
+        $desiredhost = undef;
+    } else {
+        my %home_servers = &Apache::loncommon::get_home_servers($domain);
+        if (! exists($home_servers{$desiredhost})) {
+            $r->print('<font color="#ff0000">Error:</font>'.
+                      'Invalid home server specified');
+            return;
+        }
+    }
     # Determine authentication mechanism
     my $amode  = '';
     my $genpwd = '';
@@ -797,11 +1008,12 @@ sub upfile_drop_add {
                         }
                     }
                     if ($password) {
-                        &modifystudent($domain,$username,$cid,$sec);
+                        &modifystudent($domain,$username,$cid,$sec,
+                                       $desiredhost);
                         my $reply=&Apache::lonnet::modifystudent
                             ($domain,$username,$id,$amode,$password,
                              $fname,$mname,$lname,$gen,$sec,$enddate,
-                             $startdate,$ENV{'form.forceid'});
+                             $startdate,$ENV{'form.forceid'},$desiredhost);
                         if ($reply ne 'ok') {
                             $r->print('<p><b>'.
                                       'Error enrolling '.$username.': '.
@@ -857,10 +1069,21 @@ sub upfile_drop_add {
 sub drop_student_list {
     my $r=shift;
     my $count=0;
-    foreach (@{$ENV{'form.droplist'}}) {
+    my @droplist;
+    if (ref($ENV{'form.droplist'})) {
+        @droplist = @{$ENV{'form.droplist'}};
+    } else {
+        @droplist = ($ENV{'form.droplist'});
+    }
+    foreach (@droplist) {
         my ($uname,$udom)=split(/\:/,$_);
-        &modifystudent($udom,$uname,$ENV{'request.course.id'});
-        $r->print('Dropped '.$uname.' at '.$udom.'<br>');
+        my $result = &modifystudent($udom,$uname,$ENV{'request.course.id'});
+        if ($result eq 'ok' || $result eq 'ok:') {
+            $r->print('Dropped '.$uname.' at '.$udom.'<br>');
+        } else {
+            $r->print('Error dropping '.$uname.' at '.$udom.': '.$result.
+                      '<br />');
+        }
         $count++;
     }
     $r->print('<p><b>Dropped '.$count.' student(s).</b>');
@@ -870,7 +1093,6 @@ sub drop_student_list {
 # ================================================================ Main Handler
 sub handler {
     my $r=shift;
-    $Apache::lonxml::debug=1;
     if ($r->header_only) {
         $r->content_type('text/html');
         $r->send_http_header;
@@ -880,9 +1102,9 @@ sub handler {
     if (($ENV{'request.course.fn'}) && 
         (&Apache::lonnet::allowed('cst',$ENV{'request.course.id'}))) {
         # Start page
-        $r->content_type('text/html');
+        $r->content_type('text/html') if (! exists($ENV{'form.viewcsv'}));
         $r->send_http_header;
-        $r->print(&header());
+        $r->print(&header()) if (! exists($ENV{'form.viewcsv'}));
         # Phase one, initial screen
         unless ($ENV{'form.phase'}) {
             &menu_phase_one($r);
@@ -903,6 +1125,10 @@ sub handler {
                 &menu_phase_two_enroll($r);
             } elsif ($ENV{'form.drop'}) {
                 &menu_phase_two_drop($r);
+            } elsif ($ENV{'form.view'}) {
+                &menu_phase_two_view($r);
+            } elsif ($ENV{'form.viewcsv'}) {
+                &menu_phase_two_viewcsv($r);
             }
         }
         # Phase three
@@ -920,7 +1146,7 @@ sub handler {
             &enroll_single_student($r);
         }
          # End
-        $r->print('</form></body></html>');
+        $r->print('</form></body></html>') if (! exists($ENV{'form.viewcsv'}));
     } else {
         # Not in a course, or not allowed to modify parms
         $ENV{'user.error.msg'}=