--- loncom/misc/refresh_courseids_db.pl	2010/12/24 07:58:09	1.10
+++ loncom/misc/refresh_courseids_db.pl	2013/05/27 17:24:11	1.15
@@ -1,7 +1,7 @@
 #!/usr/bin/perl
 # The LearningOnline Network
 #
-# $Id: refresh_courseids_db.pl,v 1.10 2010/12/24 07:58:09 raeburn Exp $
+# $Id: refresh_courseids_db.pl,v 1.15 2013/05/27 17:24:11 bisitz Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -85,6 +85,8 @@ my @ids=&Apache::lonnet::current_machine
 $env{'allowed.bre'} = 'F';
 
 foreach my $dom (@domains) {
+    $env{'user.domain'} = $dom;
+    $env{'user.name'} = &Apache::lonnet::get_domainconfiguser($dom);
     my %courseshash;
     my %currhash = &Apache::lonnet::courseiddump($dom,'.',1,'.','.','.',1,\@ids,'.');
     my %lastaccess = &Apache::lonnet::courselastaccess($dom,undef,\@ids);
@@ -101,6 +103,8 @@ foreach my $dom (@domains) {
             }
         }
     }
+    delete($env{'user.name'});
+    delete($env{'user.domain'});
 }
 
 delete($env{'allowed.bre'});
@@ -227,6 +231,10 @@ sub recurse_courses {
                     ($reqdmajor,$reqdminor) = &coursetype_constraints($cnum,$cdom,$crstype,
                                                                       $reqdmajor,
                                                                       $reqdminor);
+                    # check communication blocks 
+                    ($reqdmajor,$reqdminor) = &commblock_constraints($cnum,$cdom,
+                                                                     $reqdmajor,
+                                                                     $reqdminor);
                     # check course contents
                     ($reqdmajor,$reqdminor) = &coursecontent_constraints($cnum,$cdom,
                                                                          $reqdmajor,
@@ -238,6 +246,20 @@ sub recurse_courses {
                 }
 
                 unless ($chome eq 'no_host') {
+                    if (($lastaccess->{$cid} eq '') ||
+                        ($lastaccess->{$cid} > $twodaysago)) {
+                        my $contentchange;
+                        if ($courseinfo{'internal.created'} eq '') {
+                            $contentchange = &last_map_update($cnum,$cdom);
+                        } else {
+                            unless ($courseinfo{'internal.created'} > $lastaccess->{$cid}) {
+                                $contentchange = &last_map_update($cnum,$cdom);
+                            }
+                        }
+                        if (($contentchange) && ($contentchange > $courseinfo{'internal.contentchange'})) {
+                            $changes{'internal.contentchange'} = $contentchange;
+                        }
+                    }
                     $courseshash->{$chome}{$cid} = {
                         description => $courseinfo{'description'},
                         inst_code   => $inst_code,
@@ -377,6 +399,36 @@ sub coursetype_constraints {
     return ($reqdmajor,$reqdminor);
 }
 
+sub commblock_constraints {
+    my ($cnum,$cdom,$reqdmajor,$reqdminor) = @_;
+    my %comm_blocks =  &Apache::lonnet::dump('commblock',$cdom,$cnum);
+    my $now = time;
+    if (keys(%comm_blocks) > 0) {
+        foreach my $block (keys(%comm_blocks)) {
+            if ($block =~ /^firstaccess____(.+)$/) {
+                my ($major,$minor) = split(/\./,$Apache::lonnet::needsrelease{'course.commblock.timer'});
+                ($reqdmajor,$reqdminor) = &update_reqd_loncaparev($major,$minor,$reqdmajor,$reqdminor);
+                last;
+            } elsif ($block =~ /^(\d+)____(\d+)$/) {
+                my ($start,$end) = ($1,$2);
+                next if ($end < $now); 
+            }
+            if (ref($comm_blocks{$block}) eq 'HASH') {
+                if (ref($comm_blocks{$block}{'blocks'}) eq 'HASH') {
+                    if (ref($comm_blocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
+                        if (keys(%{$comm_blocks{$block}{'blocks'}{'docs'}}) > 0) {
+                            my ($major,$minor) = split(/\./,$Apache::lonnet::needsrelease{'course.commblock.docs'});
+                            ($reqdmajor,$reqdminor) = &update_reqd_loncaparev($major,$minor,$reqdmajor,$reqdminor);
+                            last;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return;
+}
+
 sub coursecontent_constraints {
     my ($cnum,$cdom,$reqdmajor,$reqdminor) = @_;
     my $navmap = Apache::lonnavmaps::navmap->new();
@@ -455,3 +507,21 @@ sub read_paramdata {
     return $resourcedata;
 }
 
+sub last_map_update {
+    my ($cnum,$cdom) = @_;
+    my $lastupdate = 0;
+    my $path = &LONCAPA::propath($cdom,$cnum);
+    if (-d "$path/userfiles") {
+        if (opendir(my $dirh, "$path/userfiles")) {
+            my @maps = grep(/^default_?\d*\.(?:sequence|page)$/,readdir($dirh));
+            foreach my $map (@maps) {
+                my $mtime = (stat("$path/userfiles/$map"))[9];
+                if ($mtime > $lastupdate) {
+                    $lastupdate = $mtime;
+                }
+            }
+        }
+    }
+    return $lastupdate;
+}
+