--- loncom/interface/lonchatfetch.pm	2004/06/27 17:36:57	1.14
+++ loncom/interface/lonchatfetch.pm	2006/05/09 14:38:09	1.23
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Chat Fetching
 #
-# $Id: lonchatfetch.pm,v 1.14 2004/06/27 17:36:57 www Exp $
+# $Id: lonchatfetch.pm,v 1.23 2006/05/09 14:38:09 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -37,8 +37,27 @@ use Apache::lonnet;
 sub handler {
     my $r = shift;
 
-    if (! &Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
-             ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+					    ['lastid','group']);
+    my ($group,$grouptitle);
+    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    if (defined($env{'form.group'})) {
+        $group = $env{'form.group'};
+        if (! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
+				       $group) ) {
+            return HTTP_NOT_ACCEPTABLE;
+        }
+        my %curr_groups = &Apache::loncommon::coursegroups($cdom,$cnum,$group);
+        if (%curr_groups) {
+            my %group_info = 
+		&Apache::loncommon::get_group_settings($curr_groups{$group});
+            $grouptitle = 
+		'<b>'.&Apache::lonnet::unescape($group_info{description}).
+		'</b><br />';
+        }
+    } elsif (! &Apache::lonnet::allowed('pch',$env{'request.course.id'}.
+             ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))
         ) {
         return HTTP_NOT_ACCEPTABLE;
     }
@@ -47,22 +66,21 @@ sub handler {
     if ($loaderror) { return $loaderror; }
     $loaderror=
        &Apache::lonnet::overloaderror($r,
-         $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
+         $env{'course.'.$env{'request.course.id'}.'.home'});
     if ($loaderror) { return $loaderror; }
 
-    $r->content_type('text/html');
+    &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;
     return OK if $r->header_only;
 
 # ------------------------------------------------------------ retrieve entries
 
-    my $cnum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
-    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
-    my $chome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+    my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
 
     my @entries=split(/\:/,
        &Apache::lonnet::reply(
-        "chatretr:$cdom:$cnum:$ENV{'user.domain'}:$ENV{'user.name'}",$chome));
+        "chatretr:$cdom:$cnum:$env{'user.domain'}:$env{'user.name'}:$group",
+        $chome));
 # Figure out what the last valid entry-id is
     my ($lastid,$thentime,$idnum);
     foreach (@entries) {
@@ -73,20 +91,18 @@ sub handler {
 	}
     }
 # ----------------------------------------------------------- Can see identity?
-    my $crs='/'.$ENV{'request.course.id'};
-    if ($ENV{'request.course.sec'}) {
-       $crs.='_'.$ENV{'request.course.sec'};
-    }                 
-    $crs=~s/\_/\//g;
-    my $seeid=&Apache::lonnet::allowed('rin',$crs);
+    my $seeid = &get_seeid_status();
 # -------------------------------------------------------- see which ones apply
-    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
     my $include=0;
     my $newstuff='';
     my $bottomid='';
-    unless ($ENV{'form.lastid'}) { 
-       $include=1; 
-       $newstuff='<html><body bgcolor="#FFFFFF">';
+    unless ($env{'form.lastid'}) { 
+	$include=1; 
+	$newstuff .=
+	    &Apache::loncommon::start_page(undef,undef,
+					   {'only_body' => 1,
+					    'bgcolor'   => '#FFFFFF',
+					    'js_ready'  => 1,});
     }
     my @participants=();
     foreach (@entries) {
@@ -102,11 +118,11 @@ sub handler {
 	    my ($sdom,$snum,$anon,$contrib)=split(/\:/,
 					     &Apache::lonnet::unescape($msg));
 	    $contrib=&Apache::lonnet::unescape($contrib);
-	    $contrib=~s/\n/\<br \/\>/g;
+	    &Apache::lonfeedback::newline_to_br(\$contrib);
 	    ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
 	    if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
-	    if ($errors && $snum eq $ENV{'user.name'} &&
-		$sdom eq $ENV{'user.domain'} ) {
+	    if ($errors && $snum eq $env{'user.name'} &&
+		$sdom eq $env{'user.domain'} ) {
 		$contrib.="<br />[TeX error message: $errors]";
 	    }
 	    $contrib=~s/\n/ /g;
@@ -145,27 +161,46 @@ sub handler {
 	    $bottomid=$id;
 	} else {
 	    $_=~/^(\w+)/;
-	    if ($1 eq $ENV{'form.lastid'}) { $include=1; }
+	    if ($1 eq $env{'form.lastid'}) { $include=1; }
 	}
     }
     my $participant_output=join('<br />',sort @participants);
+    my $refresh_cmd = "/adm/chatfetch?lastid=$lastid";
+    if (defined($group)) {
+        $refresh_cmd .= "&group=$group";
+    }
+    my $start_page = 
+	&Apache::loncommon::start_page('Chat',undef,
+				       {'redirect'  => [5,$refresh_cmd],
+					'only_body' => 1,});
+    my $end_page = &Apache::loncommon::end_page();
     $r->print(<<ENDDOCUMENT);
-<html>
-<head>
-<title>The LearningOnline Network with CAPA</title>
-  <meta HTTP-EQUIV="Refresh" CONTENT="5; url=/adm/chatfetch?lastid=$lastid">
-</head>
-<body bgcolor="#FFFFFF">
-<script>
+$start_page
+<script type="text/javascript">
 parent.chatout.document.writeln('$newstuff');
 parent.chatout.scroll(0,10000000);
 </script>
+$grouptitle
 $participant_output
-</body>
-</html>
+$end_page
 ENDDOCUMENT
     return OK;
-} 
+}
+
+sub get_seeid_status {
+    my $crs='/'.$env{'request.course.id'};
+    my $seeid;
+    if (exists($env{'form.group'})) {
+        $seeid = &Apache::lonnet::allowed('rci',$crs.'/'.$env{'form.group'});
+    } else {
+        if ($env{'request.course.sec'}) {
+            $crs.='_'.$env{'request.course.sec'};
+        }
+        $crs=~s/\_/\//g;
+        $seeid=&Apache::lonnet::allowed('rin',$crs);
+    }
+    return $seeid;
+}
 
 1;
 __END__