--- loncom/interface/lontrackstudent.pm	2004/08/11 18:41:05	1.1
+++ loncom/interface/lontrackstudent.pm	2004/08/19 21:07:35	1.3
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lontrackstudent.pm,v 1.1 2004/08/11 18:41:05 matthew Exp $
+# $Id: lontrackstudent.pm,v 1.3 2004/08/19 21:07:35 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -50,7 +50,127 @@ use Time::HiRes;
 
 ###################################################################
 ###################################################################
-sub get_all_data {}
+sub get_all_data {
+    my ($r,$prog_state,$navmap) = @_;
+    ##
+    ## Compose the query
+    &Apache::lonhtmlcommon::Update_PrgWin
+        ($r,$prog_state,&mt('Composing Query'));
+    #
+    my $query;
+    my $cid = $ENV{'request.course.id'};
+    my $domain = $ENV{'course.'.$cid.'.domain'};
+    my $home = $ENV{'course.'.$cid.'.home'};
+    my $course = $ENV{'course.'.$cid.'.num'};
+    my $prefix = $course.'_'.$domain.'_';
+    #
+    my $student_table  = $prefix.'students';
+    my $res_table      = $prefix.'resource';
+    my $action_table   = $prefix.'actions';
+    my $machine_table  = $prefix.'machine_table';
+    my $activity_table = $prefix.'activity';
+    #
+    $query = qq{
+        select B.resource,A.time,C.student,D.action,E.machine,A.action_values 
+            FROM $activity_table AS A
+            LEFT JOIN $res_table AS B ON B.res_id=A.res_id 
+            LEFT JOIN $student_table  AS C ON C.student_id=A.student_id 
+            LEFT JOIN $action_table   AS D ON D.action_id=A.action_id 
+            LEFT JOIN $machine_table  AS E ON E.machine_id=A.machine_id
+            LIMIT 500
+    };
+    $query =~ s|$/||g;
+    # &Apache::lonnet::logthis($query);
+    ##
+    ## Send it along
+    my $reply=&Apache::lonnet::metadata_query($query,undef,undef,[$home]);
+    if (ref($reply) ne 'HASH') {
+        $r->print('<h2>'.
+                  &mt('Error contacting home server for course: [_1]',
+                      $reply).
+                  '</h2>');
+        return;
+    }
+    my $results_file = $r->dir_config('lonDaemons').'/tmp/'.$reply->{$home};
+    my $endfile = $results_file.'.end';
+    ##
+    ## Check for the results
+    &Apache::lonhtmlcommon::Update_PrgWin
+        ($r,$prog_state,&mt('Waiting for results'));
+    my $maxtime = 500;
+    my $starttime = time;
+    while (! -e $endfile && (time-$starttime < $maxtime)) {
+        sleep(1);
+        &Apache::lonhtmlcommon::Update_PrgWin
+            ($r,$prog_state,&mt('Waiting for results'));
+    }
+    if (! -e $endfile) {
+        $r->print('<h2>'.
+                  &mt('Unable to retrieve data.').'</h2>');
+        $r->print(&mt('Please try again in a few minutes.'));
+        return;
+    }
+    &Apache::lonhtmlcommon::Update_PrgWin
+        ($r,$prog_state,&mt('Parsing results'));
+    if (! open(ACTIVITYDATA,$results_file)) {
+        $r->print('<h2>'.
+                  &mt('Unable to read results file.  This is a serious error and has been logged.  You should contact your system administrator to resolve this issue.  If you are the system administrator, I feel sorry for you.').
+                  '</h2>');
+        return;
+    }
+    my $tableheader = 
+        '<table><tr>'.
+        '<th>'.&mt('Resource').'</th>'.
+        '<th>'.&mt('Time').'</th>'.
+        '<th>'.&mt('Student').'</th>'.
+        '<th>'.&mt('Action').'</th>'.
+        '<th>'.&mt('Originating Server').'</th>'.
+        '<th>'.&mt('Data').'</th>'.
+        '</tr>'.$/;
+    my $count =0;
+    $r->print($tableheader);
+    $r->rflush();
+    while (my $line = <ACTIVITYDATA>) {
+        $line = &Apache::lonnet::unescape($line);
+        if (++$count % 50 == 0) {
+            $r->print('</table>'.$/);
+            $r->rflush();
+            $r->print($tableheader);
+        }
+        my ($symb,$timestamp,$student,$action,$machine,$values) =
+            map { &Apache::lonnet::unescape($_); } split(',',$line,6);
+        my ($title,$src);
+        if ($symb =~ m:^/(res|adm)/:) {
+            $title = $symb;
+            $src = $symb;
+        } else {
+            # We may need to add 'uploaded/' to the symb
+            # 
+            # Hey, guess what - navmaps->getBySymb 
+            # does not work with uploaded resources/new style courses/something
+            # The fact that our symbs do not have uploaded/ prepended to them
+            # then they (most often but not always) should, is likely to be
+            # a puzzle too.
+            #&Apache::lonnet::logthis('trackstudent:symb = '.$symb);
+            # my $nav_res = $navmap->getBySymb($symb);
+            $title = 'resource title goes here'; # $nav_res->title();
+            $src   = '/dev/null'; # $nav_res->src();
+        }
+        $r->print('<tr>'.
+                  '<td>'.'<a href="'.$src.'">'.$title.'</a>'.'</td>'.
+                  '<td><nobr>'.$timestamp.'</nobr></td>'.
+                  '<td>'.$student.'</td>'.
+                  '<td>'.$action.'</td>'.
+                  '<td>'.$machine.'</td>'.
+                  '<td>'.$values.'</td>'.'</tr>'.$/);
+    }
+    $r->print('</table>'.$/);
+    close(ACTIVITYDATA);
+    &Apache::lonhtmlcommon::Update_PrgWin
+        ($r,$prog_state,&mt('Finished!'));
+    return;
+}
+
 sub get_student_data {}
 sub html_output_student_data {}
 sub html_output_class_data {}
@@ -110,14 +230,9 @@ sub handler {
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                             ['selected_student']);
     #
-    # Give the LON-CAPA page header
-    $r->print('<html><head><title>'.
-              &mt('Student Activity').
-              "</title></head>\n".
-              &Apache::loncommon::bodytag('Student Activity'));
-    $r->rflush();
+    # We will almost always need this...
+    my $navmap = Apache::lonnavmaps::navmap->new();
     # 
-    # Either print out a menu for them or send them to a report
     &Apache::lonhtmlcommon::clear_breadcrumbs();
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/studentactivity',
                                             title=>'Student Activity',
@@ -125,15 +240,32 @@ sub handler {
                                             faq=>139,
                                             bug=>'instructor interface'});
     #
+    # Give the LON-CAPA page header
+    $r->print('<html><head><title>'.
+              &mt('Student Activity').
+              "</title></head>\n".
+              &Apache::loncommon::bodytag('Student Activity').
+              &Apache::lonhtmlcommon::breadcrumbs(undef,'Student Activity'));
+    $r->rflush();
+    #
     # Begin form output
-    $r->print('<form name="Statistics" ');
-    $r->print('method="post" action="/adm/statistics">');
+    $r->print('<form name="trackstudent" method="post" action="/adm/trackstudent">');
+    $r->print('<br />');
+    $r->print('<div name="statusline">'.
+              &mt('Status:[_1]',
+                  '<input type="text" name="status" size="60" value="" />').
+              '</div>');
     $r->rflush();
-    $r->print('<h1>'.&mt('View student activity').'</h1>');
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+        ($r,&mt('Student Activity Retrieval'),
+         &mt('Student Activity Retrieval'),undef,'inline',undef,
+         'trackstudent','status');
+    &Apache::lonhtmlcommon::Update_PrgWin
+        ($r,\%prog_state,&mt('Contacting course home server'));
     #
     my $result = &request_data_update();
     if (ref($result) eq 'HASH') {
-        $result = join(map { $_.'=>'.$result->{$_}; } keys(%$result));
+        $result = join(' ',map { $_.'=>'.$result->{$_}; } keys(%$result));
     }
     $r->print('<h2>'.$result.'</h2>');
     #
@@ -145,6 +277,12 @@ sub handler {
         $r->print('I would like to have something to show you but I do not.');
     }
     #
+    &get_all_data($r,\%prog_state,$navmap);
+
+#    &Apache::lonhtmlcommon::Update_PrgWin
+#        ($r,\%prog_state,&mt('Done'));
+
+    #
     $r->print("</form>\n");
     $r->print("</body>\n</html>\n");
     $r->rflush();