--- loncom/interface/londocs.pm	2002/10/11 18:06:32	1.26
+++ loncom/interface/londocs.pm	2002/10/21 20:31:06	1.35
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: londocs.pm,v 1.26 2002/10/11 18:06:32 www Exp $
+# $Id: londocs.pm,v 1.35 2002/10/21 20:31:06 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -29,15 +29,21 @@
 package Apache::londocs;
 
 use strict;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :http);
 use Apache::lonnet;
 use Apache::loncommon;
 use Apache::lonratedt;
 use Apache::lonratsrv;
 use Apache::lonxml;
+use GDBM_File;
 
 my $iconpath;
 
+my %hash;
+
+my $hashtied;
+my %alreadyseen=();
+
 # Mapread read maps into lonratedt::global arrays 
 # @order and @resources, determines status
 # sets @order - pointer to resources in right order
@@ -218,6 +224,87 @@ END
     return $line;
 }
 
+# ---------------------------------------------------------------- tie the hash
+
+sub tiehash {
+    $hashtied=0;
+    if ($ENV{'request.course.fn'}) {
+        if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
+            &GDBM_READER(),0640)) {
+                $hashtied=1;
+        }
+    }    
+}
+
+sub untiehash {
+    if ($hashtied) { untie %hash; }
+    $hashtied=0;
+}
+
+# --------------------------------------------------------------- check on this
+
+sub checkonthis {
+    my ($r,$url,$level,$title)=@_;
+    $alreadyseen{$url}=1;
+    $r->rflush();
+    if ($url) {
+       $r->print('<br />');
+       for (my $i=0;$i<=$level*5;$i++) {
+           $r->print('&nbsp;');
+       }
+       $r->print('<a href="'.$url.'" target="cat">'.
+		 ($title?$title:$url).'</a> ');
+       if ($url=~/^\/res\//) {
+	  my $result=&Apache::lonnet::repcopy(
+                              &Apache::lonnet::filelocation('',$url));
+          if ($result==OK) {
+             $r->print('<font color="green">ok</font>');
+             $r->rflush();
+             &Apache::lonnet::countacc($url);
+             $url=~/\.(\w+)$/;
+             if (&Apache::loncommon::fileembstyle($1) eq 'ssi') {
+		 $r->print('<br />');
+                 $r->rflush();
+                 for (my $i=0;$i<=$level*5;$i++) {
+                     $r->print('&nbsp;');
+                 }
+                 $r->print('- Rendering: ');
+                 &Apache::lonxml::xmlparse($r,'web',
+                   &Apache::lonnet::getfile(
+                    &Apache::lonnet::filelocation('',$url)));
+                 if (($Apache::lonxml::errorcount) ||
+                     ($Apache::lonxml::warningcount)) {
+		     if ($Apache::lonxml::errorcount) {
+                        $r->print('<font color="red"><b>'.
+			  $Apache::lonxml::errorcount.' error(s)</b></font> ');
+                     }
+		     if ($Apache::lonxml::warningcount) {
+                        $r->print('<font color="blue">'.
+			  $Apache::lonxml::warningcount.' warning(s)</font>');
+                     }
+                 } else {
+                     $r->print('<font color="green">ok</font>');
+                 }
+                 $r->rflush();
+             }
+	     my $dependencies=
+                &Apache::lonnet::metadata($url,'dependencies');
+             foreach (split(/\,/,$dependencies)) {
+		 if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
+                    &checkonthis($r,$_,$level+1);
+                 }
+             }
+          } elsif ($result==HTTP_SERVICE_UNAVAILABLE) {
+             $r->print('<font color="red"><b>connection down</b></font>');
+          } elsif ($result==HTTP_NOT_FOUND) {
+             $r->print('<font color="red"><b>not found</b></font>');
+          } else {
+             $r->print('<font color="red"><b>access denied</b></font>');
+          }
+      }
+   }
+}
+
 # ================================================================ Main Handler
 sub handler {
     my $r = shift;
@@ -225,6 +312,7 @@ sub handler {
     $r->send_http_header;
     return OK if $r->header_only;
 
+  
   if ($ENV{'form.verify'}) {
  
    my $loaderror=&Apache::lonnet::overloaderror($r);
@@ -232,11 +320,107 @@ sub handler {
 
    $r->print('<html><head><title>Verify Content</title></head>'.
               &Apache::loncommon::bodytag('Verify Course Documents'));
-
+   $hashtied=0;
+   undef %alreadyseen;
+   %alreadyseen=();
+   &tiehash();
+   foreach (keys %hash) {
+       if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
+           &checkonthis($r,$hash{$_},0,$hash{'title_'.$1});
+       }
+   }
+   &untiehash();
   } elsif ($ENV{'form.versions'}) {
     $r->print('<html><head><title>Check Versions</title></head>'.
               &Apache::loncommon::bodytag('Check Course Document Versions'));
-
+   $hashtied=0;
+   &tiehash();
+   my %changes=&Apache::lonnet::dump
+    ('versionupdate',$ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+                     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+   my $firstkey=(keys %changes)[0];
+   unless ($firstkey=~/^error\:/) {
+       unless ($ENV{'form.timerange'}) {
+	   $ENV{'form.timerange'}=604800;
+       }
+       my $seltext='during the last '.$ENV{'form.timerange'}.' seconds';
+       my $startsel='';
+       my $monthsel='';
+       my $weeksel='';
+       my $daysel='';
+       if ($ENV{'form.timerange'}==-1) {
+	   $seltext='since start of course';
+           $startsel='selected';
+           $ENV{'form.timerange'}=time;
+       }
+       my $starttime=time-$ENV{'form.timerange'};
+       if ($ENV{'form.timerange'}==2592000) {
+           $seltext='during the last month ('.localtime($starttime).')';
+           $monthsel='selected';
+       } elsif ($ENV{'form.timerange'}==604800) {
+           $seltext='during the last week ('.localtime($starttime).')';
+           $weeksel='selected';
+       } elsif ($ENV{'form.timerange'}==86400) {
+           $seltext='since yesterday ('.localtime($starttime).')';
+           $daysel='selected';
+       }
+ 
+       $r->print(<<ENDHEADERS);
+<form action="/adm/coursedocs" method="post">
+<select name="timerange">
+<option value="-1" $startsel>Since Start of Course</option>
+<option value="2592000" $monthsel>Last Month</option>
+<option value="604800" $weeksel>Last Week</option>
+<option value="86400" $daysel>Since Yesterday</option>
+</select>
+<input type="submit" name="versions" value="Display" />
+</form>
+<h3>Content changed $seltext</h3>
+<table border="2">
+<tr>
+<th>File</th><th>Modification Date</th>
+<th>Version</th><th>Differences</th></tr>
+ENDHEADERS
+       foreach (keys %changes) {
+	  if ($changes{$_}>$starttime) {
+	     my ($root,$extension)=($_=~/^(.*)\.(\w+)$/);
+             my $currentversion=&Apache::lonnet::getversion($_);
+             my $linkurl=&Apache::lonnet::clutter($_);
+             $r->print(
+                 '<tr><td><a href="'.$linkurl.'" target="cat">'.$linkurl.
+                 '</a></td><td>'.
+                 localtime($changes{$_}).'</td><td>'.$currentversion.'</td>'.
+		       '<td>');
+             my $lastold=1;
+             for (my $prevvers=1;$prevvers<$currentversion;$prevvers++) {
+                 my $url=$root.'.'.$prevvers.'.'.$extension;
+                 if (&Apache::lonnet::metadata($url,'lastrevisiondate')<
+                                                             $starttime) {
+                     $lastold=$prevvers;
+                 }
+             }
+            for (my $prevvers=$lastold;$prevvers<$currentversion;$prevvers++) {
+                 my $url=$root.'.'.$prevvers.'.'.$extension;
+                 $r->print('<a href="'.&Apache::lonnet::clutter($url).
+                   '">Version '.$prevvers.' ('.
+                 localtime(&Apache::lonnet::metadata($url,'lastrevisiondate')).
+                 ')</a>');
+                 if (&Apache::loncommon::fileembstyle($extension) eq 'ssi') {
+                    $r->print(' <a href="/adm/diff?filename='.
+                            &Apache::lonnet::clutter($root.'.'.$extension).
+                            '&versionone='.$prevvers.
+			     '">Diffs</a>');
+                 }
+                 $r->print('<br />');
+             }
+             $r->print('</td></tr>');
+          }
+       }
+       $r->print('</table>');
+   } else {
+       $r->print('<p>No content modifications yet.</p>');
+   }
+   &untiehash();
   } else {
 # is this a standard course?