--- loncom/misc/refresh_courseids_db.pl	2010/03/17 18:16:56	1.3
+++ loncom/misc/refresh_courseids_db.pl	2010/07/24 00:01:12	1.4
@@ -1,7 +1,7 @@
 #!/usr/bin/perl
 # The LearningOnline Network
 #
-# $Id: refresh_courseids_db.pl,v 1.3 2010/03/17 18:16:56 raeburn Exp $
+# $Id: refresh_courseids_db.pl,v 1.4 2010/07/24 00:01:12 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -54,10 +54,15 @@ use strict;
 use lib '/home/httpd/lib/perl/';
 use Apache::lonnet;
 use Apache::loncommon;
+use Apache::lonuserstate;
+use Apache::loncoursedata;
+use Apache::lonnavmaps;
 use LONCAPA qw(:DEFAULT :match);
 
 exit if ($Apache::lonnet::perlvar{'lonRole'} ne 'library');
 
+use vars qw( %needsrelease %checkparms %checkresponsetypes %checkcrstypes);
+
 #  Make sure this process is running from user=www
 my $wwwid=getpwnam('www');
 if ($wwwid!=$<) {
@@ -73,6 +78,10 @@ open(my $fh,'>>'.$Apache::lonnet::perlva
 print $fh "==== refresh_courseids_db.pl Run ".localtime()."====\n";
 
 my @domains = sort(&Apache::lonnet::current_machine_domains());
+
+&parse_releases_xml();
+$env{'allowed.bre'} = 'F';
+
 foreach my $dom (@domains) {
     my %courseshash;
     my @ids=&Apache::lonnet::current_machine_ids();
@@ -92,6 +101,8 @@ foreach my $dom (@domains) {
     }
 }
 
+delete($env{'allowed.bre'});
+
 ## Finished!
 print $fh "==== refresh_courseids.db completed ".localtime()." ====\n";
 close($fh);
@@ -140,7 +151,7 @@ sub recurse_courses {
                 }
                 my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
                 my $owner = $courseinfo{'internal.courseowner'};
-                my (%roleshash,$gotcc);
+                my (%roleshash,$gotcc,$reqdmajor,$reqdminor);
                 if ($owner eq '') {
                     %roleshash = &Apache::lonnet::get_my_roles($cnum,$cdom,undef,undef,['cc'],undef,undef,1);
                     $gotcc = 1;
@@ -201,6 +212,25 @@ sub recurse_courses {
                         }
                     }
                 }
+                
+                $env{'request.course.id'} = $cdom.'_'.$cnum;
+                $env{'request.role'} = 'cc./'.$cdom.'/'.$cnum;
+                &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
+
+                # check all parameters
+                ($reqdmajor,$reqdminor) = &parameter_constraints($cnum,$cdom);
+
+                # check course type
+                ($reqdmajor,$reqdminor) = &coursetype_constraints($cnum,$cdom,$crstype,
+                                                                 $reqdmajor,
+                                                                 $reqdminor);
+                # check course contents
+                ($reqdmajor,$reqdminor) = &coursecontent_constraints($cnum,$cdom,
+                                                                     $reqdmajor,
+                                                                     $reqdminor);
+                delete($env{'request.course.id'});
+                delete($env{'request.role'});
+
                 unless ($chome eq 'no_host') {
                     $courseshash->{$chome}{$cid} = {
                         description => $courseinfo{'description'},
@@ -274,6 +304,12 @@ sub recurse_courses {
                                 $courseinfo{'internal.'.$item};
                         }
                     }
+                    if ($reqdmajor ne '' && $reqdminor ne '') {
+                        $courseshash->{$chome}{$cid}{'releaserequired'} = $reqdmajor.'.'.$reqdminor;
+                    }
+                    if ($courseinfo{'internal.releaserequired'} ne $reqdmajor.'.'.$reqdminor) {
+                        $changes{'internal.releaserequired'} = $reqdmajor.'.'.$reqdminor;
+                    }
                     if (keys(%changes)) {
                         if (&Apache::lonnet::put('environment',\%changes,$cdom,$cnum) eq 'ok') {
                             print $fh "Course's environment.db for ".$cdom."_".$cnum." successfully updated with following entries: ";
@@ -292,5 +328,128 @@ sub recurse_courses {
     return;
 }
 
+sub parameter_constraints {
+    my ($cnum,$cdom) = @_;
+    my ($reqdmajor,$reqdminor);
+    my $resourcedata=&read_paramdata($cnum,$cdom);
+    if (ref($resourcedata) eq 'HASH') {
+        foreach my $key (keys(%{$resourcedata})) { 
+            foreach my $item (keys(%checkparms)) {
+                if ($key =~ /(\Q$item\E)$/) {
+                    if (ref($checkparms{$item}) eq 'ARRAY') {
+                        my $value = $resourcedata->{$key};
+                        if (grep(/^\Q$value\E$/,@{$checkparms{$item}})) {
+                            my ($major,$minor) = split(/\./,$needsrelease{'parameter'}{$item}{$value});
+                            ($reqdmajor,$reqdminor) = 
+                                &update_reqd_loncaparev($major,$minor,$reqdmajor,$reqdminor);
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return ($reqdmajor,$reqdminor);
+}
+
+sub coursetype_constraints {
+    my ($cnum,$cdom,$crstype,$reqdmajor,$reqdminor) = @_;
+    if (defined($checkcrstypes{$crstype})) {
+        my ($major,$minor) = split(/\./,$checkcrstypes{$crstype});
+        ($reqdmajor,$reqdminor) = 
+            &update_reqd_loncaparev($major,$minor,$reqdmajor,$reqdminor);
+    }
+    return ($reqdmajor,$reqdminor);
+}
+
+sub coursecontent_constraints {
+    my ($cnum,$cdom,$reqdmajor,$reqdminor) = @_;
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    if (defined($navmap)) {
+        my %allresponses;
+        foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) {
+            my %responses = $res->responseTypes();
+            foreach my $key (keys(%responses)) {
+                next unless(exists($checkresponsetypes{$key}));
+                $allresponses{$key} += $responses{$key};
+            }
+        }
+        foreach my $key (keys(%allresponses)) {
+            my ($major,$minor) = split(/\./,$checkresponsetypes{$key});
+            ($reqdmajor,$reqdminor) = &update_reqd_loncaparev($major,$minor,$reqdmajor,$reqdminor);
+        }
+    }
+    return ($reqdmajor,$reqdminor);
+}
+
+sub update_reqd_loncaparev {
+    my ($major,$minor,$reqdmajor,$reqdminor) = @_;
+    if (($major ne '' && $major !~ /\D/) & ($minor ne '' && $minor !~ /\D/)) {
+        if ($reqdmajor eq '' || $reqdminor eq '') {
+            $reqdmajor = $major;
+            $reqdminor = $minor;
+        } elsif (($major > $reqdmajor) ||
+            ($major == $reqdmajor && $minor > $reqdminor))  {
+            $reqdmajor = $major;
+            $reqdminor = $minor;
+        }
+    }
+    return ($reqdmajor,$reqdminor);
+}
+
+sub read_paramdata {
+    my ($cnum,$dom)=@_;
+    my $resourcedata=&Apache::lonnet::get_courseresdata($cnum,$dom);
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    foreach my $student (keys(%{$classlist})) {
+        if ($student =~/^($LONCAPA::match_username)\:($LONCAPA::match_domain)$/) {
+            my ($tuname,$tudom)=($1,$2);
+            my $useropt=&Apache::lonnet::get_userresdata($tuname,$tudom);
+            foreach my $userkey (keys(%{$useropt})) {
+                if ($userkey=~/^$env{'request.course.id'}/) {
+                    my $newkey=$userkey;
+                    $newkey=~s/^($env{'request.course.id'}\.)/$1\[useropt\:$tuname\:$tudom\]\./;
+                    $$resourcedata{$newkey}=$$useropt{$userkey};
+                }
+            }
+         }
+    }
+    return $resourcedata;
+}
 
+sub parse_releases_xml {
+    my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
+    if (-e $file) { 
+        my $parser = HTML::LCParser->new($file);
+        while (my $token = $parser->get_token()) {
+            if ($token->[0] eq 'S') {
+                my $item = $token->[1];
+                my $name = $token->[2]{'name'};
+                my $value = $token->[2]{'value'};
+                if ($item ne '' && $name ne '' && $value ne '') {
+                    my $release = $parser->get_text();
+                    $release =~ s/(^\s*|\s*$ )//gx;
+                    $needsrelease{$item}{$name}{$value} = $release;
+                    if ($item eq 'parameter') {
+                       if (ref($checkparms{$name}) eq 'ARRAY') {
+                           unless(grep(/^\Q$name\E$/,@{$checkparms{$name}})) {
+                               push(@{$checkparms{$name}},$value);
+                           }
+                       } else {
+                           push(@{$checkparms{$name}},$value);
+                       }
+                    } elsif ($item eq 'resourcetag') {
+                        if ($name eq 'responsetype') {
+                            $checkresponsetypes{$value} = $release;
+                        }
+                    } elsif ($item eq 'course') {
+                        if ($name eq 'crstype') {
+                            $checkcrstypes{$value} = $release;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return;
+}