--- loncom/metadata_database/searchcat.pl	2010/03/26 13:29:31	1.78
+++ loncom/metadata_database/searchcat.pl	2013/08/22 09:30:21	1.81
@@ -2,7 +2,7 @@
 # The LearningOnline Network
 # searchcat.pl "Search Catalog" batch script
 #
-# $Id: searchcat.pl,v 1.78 2010/03/26 13:29:31 raeburn Exp $
+# $Id: searchcat.pl,v 1.81 2013/08/22 09:30:21 bisitz Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -74,6 +74,8 @@ use IO::File;
 use HTML::TokeParser;
 use GDBM_File;
 use POSIX qw(strftime mktime);
+use Mail::Send;
+use Apache::loncommon();
 
 use Apache::lonnet();
 
@@ -209,6 +211,7 @@ foreach my $dom (@domains) {
     if ($oneuser) {
         @homeusers=($oneuser);
     }
+
     #
     # Loop through the users
     foreach my $user (@homeusers) {
@@ -270,12 +273,56 @@ foreach my $dom (@domains) {
             &portfolio_logging(%portmetalog);
         }
     }
+    my (%names_by_id,,%ids_by_name,%idstodelete,%idstoadd,%duplicates);
+    unless ($simulate || $oneuser) {
+        my $idshashref;
+        $idshashref = &tie_domain_hash($dom, "ids", &GDBM_WRCREAT());
+        if (ref($idshashref) eq 'HASH') {
+            %names_by_id = %{$idshashref};
+            while (my ($id,$uname) = each(%{$idshashref}) ) {
+                $id = &unescape($id);
+                $uname = &unescape($uname); 
+                $names_by_id{$id} = $uname;
+                push(@{$ids_by_name{$uname}},$id);
+            }
+            &untie_domain_hash($idshashref);
+        }
+    }
     # Update allusers
     foreach my $uname (keys(%allusers)) {
         next if (exists($courses{$dom.'_'.$uname}));
         my %userdata = 
             &Apache::lonnet::get('environment',['firstname','lastname',
                 'middlename','generation','id','permanentemail'],$dom,$uname);
+        unless ($simulate || $oneuser) {
+            my $addid;
+            if ($userdata{'id'} ne '') {
+                $addid = $userdata{'id'};
+                $addid=~tr/A-Z/a-z/;
+            }
+            if (exists($ids_by_name{$uname})) {
+                if (ref($ids_by_name{$uname}) eq 'ARRAY') {
+                    if (scalar(@{$ids_by_name{$uname}}) > 1) {
+                        &log(0,"Multiple employee/student IDs found in ids.db for $uname:$dom -- ".join(', ',@{$ids_by_name{$uname}}));
+                    }
+                    foreach my $id (@{$ids_by_name{$uname}}) {
+                        if ($id eq $userdata{'id'}) {
+                            undef($addid);
+                        } else { 
+                            $idstodelete{$id} = $uname;
+                        }
+                    }
+                }
+            }
+            if ($addid ne '') {
+                if (exists($idstoadd{$addid})) {
+                    push(@{$duplicates{$addid}},$uname);
+                } else {
+                    $idstoadd{$addid} = $uname;
+                }
+            }
+        }
+        
         $userdata{'username'} = $uname;
         $userdata{'domain'} = $dom;
         my %alluserslog = 
@@ -285,6 +332,67 @@ foreach my $dom (@domains) {
             &log(0,$alluserslog{$item});
         }
     }
+    unless ($simulate || $oneuser) {
+        if (keys(%idstodelete) > 0) {
+            my %resulthash = &Apache::lonnet::iddel($dom,\%idstodelete,$hostid);
+            if ($resulthash{$hostid} eq 'ok') {
+                foreach my $id (sort(keys(%idstodelete))) {
+                    &log(0,"Record deleted from ids.db for $dom -- $id => ".$idstodelete{$id});
+                }
+            } else {
+                &log(0,"Error: '$resulthash{$hostid}' occurred when attempting to delete records from ids.db for $dom");
+            }
+        }
+        if (keys(%idstoadd) > 0) {
+            my $idmessage = '';
+            my %newids;
+            foreach my $addid (sort(keys(%idstoadd))) {
+                if ((exists($names_by_id{$addid})) && ($names_by_id{$addid} ne $idstoadd{$addid})  && !($idstodelete{$addid})) {
+                    &log(0,"Two usernames associated with a single ID $addid in domain: $dom: $names_by_id{$addid} (current) and $idstoadd{$addid}\n");
+                    $idmessage .= "$addid,$names_by_id{$addid},$idstoadd{$addid}\n";
+                } else {
+                    $newids{$addid} = $idstoadd{$addid};
+                }
+            }
+            if (keys(%newids) > 0) {
+                my $putresult = &Apache::lonnet::put_dom('ids',\%idstoadd,$dom,$hostid);
+                if ($putresult eq 'ok') {
+                    foreach my $id (sort(keys(%idstoadd))) {
+                        &log(0,"Record added to ids.db for $dom -- $id => ".$idstoadd{$id});
+                    }
+                } else {
+                    &log(0,"Error: '$putresult' occurred when attempting to add records to ids.db for $dom"); 
+                }
+            }
+            if ($idmessage) {
+                my $to = &Apache::loncommon::build_recipient_list(undef,'idconflictsmail',$dom);
+                if ($to ne '') {
+                    my $msg = new Mail::Send;
+                    $msg->to($to);
+                    $msg->subject('LON-CAPA studentIDs conflict');
+                    my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
+                    my $hostname = &Apache::lonnet::hostname($lonhost);
+                    my $replytoaddress = 'do-not-reply@'.$hostname;
+                    $msg->add('Reply-to',$replytoaddress);
+                    $msg->add('From',"www@$hostname");
+                    $msg->add('Content-type','text/plain; charset=UTF-8');
+                    if (my $fh = $msg->open()) {
+                        print $fh 
+                            'The following IDs are used for more than one user in your domain:'."\n".
+                            'Each row contains: Student/Employee ID, Current username in ids.db file, '.
+                            'Additional username'."\n\n".
+                            $idmessage;
+                        $fh->close;
+                    }
+                }
+            }
+        }
+        if (keys(%duplicates) > 0) {
+            foreach my $id (sort(keys(%duplicates))) {
+                &log(0,"Duplicate IDs found for entries to add to ids.db in $dom -- $id => $idstodelete{$id}");
+            }
+        }
+    }
 }
 
 #