--- loncom/publisher/lonretrieve.pm	2001/04/03 18:12:57	1.2
+++ loncom/publisher/lonretrieve.pm	2001/05/02 21:35:15	1.8
@@ -11,7 +11,7 @@
 # 03/23 Guy Albertelli
 # 03/24,03/29 Gerd Kortemeyer)
 #
-# 03/31 Gerd Kortemeyer
+# 03/31,04/03,05/02 Gerd Kortemeyer
 
 package Apache::lonretrieve;
 
@@ -24,21 +24,103 @@ sub phaseone {
     my ($r,$fn,$uname,$udom)=@_;
     my $docroot=$r->dir_config('lonDocRoot');
 
-    my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$fn;
+    my $urldir='/res/'.$udom.'/'.$uname.$fn;
+    $urldir=~s/\/[^\/]+$/\//;
+
+    my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn;
+    my $resdir=$resfn;
     $resdir=~s/\/[^\/]+$/\//;
 
-    $fn=~/^\/(.+)\.(\w+)$/;
+    $fn=~/\/([^\/]+)\.(\w+)$/;
     my $main=$1;
     my $suffix=$2;
-    
+
+    if (-e $resfn) {  
+    $r->print('<form action=/adm/retrieve method=post>'.
+	      '<input type=hidden name=filename value="'.$fn.'">'.
+              '<input type=hidden name=phase value=two>'.
+              '<table border=2><tr><th>Select</th><th>Version</th>'.
+              '<th>Became this version on ...</th>'.
+              '<th>Metadata</th></tr>');
     my $filename;
     opendir(DIR,$resdir);
     while ($filename=readdir(DIR)) {
         if ($filename=~/^$main\.(\d+)\.$suffix$/) {
-           $r->print($resdir.' = '.$filename.'<br>');
+	   my $version=$1;
+           my ($rdev,$rino,$rmode,$rnlink,
+                $ruid,$rgid,$rrdev,$rsize,
+                $ratime,$rmtime,$rctime,
+                $rblksize,$rblocks)=stat($resdir.'/'.$filename);
+           $r->print('<tr><td><input type=radio name=version value="'.
+                     $version.'"></td><th>'.$version.'</th><td>'.
+                     localtime($rmtime).'</td><td>'.
+                     '<a href="'.$urldir.$filename.'.meta" target=cat>'.
+                     'Metadata Version '.$version);
+           if (&Apache::lonnet::fileembstyle($suffix) eq 'ssi') {
+               $r->print(
+                    '&nbsp;&nbsp;<a target=cat href="/adm/diff?filename='.$fn.
+                        '&versionone=priv&versiontwo='.$version.
+                        '">Diffs with Version '.$version.'</a>');
+           }
+           $r->print('</a></td></tr>');
         }
     }
     closedir(DIR);
+    my ($rdev,$rino,$rmode,$rnlink,
+        $ruid,$rgid,$rrdev,$rsize,
+        $ratime,$rmtime,$rctime,
+        $rblksize,$rblocks)=stat($resfn);
+    $r->print('<tr><td><input type=radio name=version value="new"></td>'.
+              '<th>Current</th><td>'.localtime($rmtime).
+           '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'.
+              'Metadata current version</a></td></tr></table><p>'.
+           '<font size=+1 color=red>Retrieval of an old version will '.
+           'overwrite the file currently in construction space</font><p>'.
+           '<input type=submit value="Retrieve version"></form>');
+} else {
+    $r->print('<h3>No previous versions published.</h3>');
+}
+}
+
+sub phasetwo {
+    my ($r,$fn,$uname,$udom)=@_;
+    if ($ENV{'form.version'}) {
+        my $version=$ENV{'form.version'};
+	if ($version eq 'new') {
+	    $r->print('<h3>Retrieving current (most recent) version</h3>');
+        } else {
+            $r->print('<h3>Retrieving old version '.$version.'</h3>');
+        }
+        my $logfile;
+        my $ctarget='/home/'.$uname.'/public_html'.$fn;
+        my $vfn=$fn;
+        if ($version ne 'new') {
+	    $vfn=~s/\.(\w+)$/\.$version\.$1/;
+        }
+        my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn;
+        unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) {
+	  $r->print(
+         '<font color=red>No write permission to user directory, FAIL</font>');
+        }
+        print $logfile 
+"\n\n================= Retrieve ".localtime()." ================\n".
+"Version: $version\nSource: $csource\nTarget: $ctarget\n";
+        $r->print('<p>Copying file: ');
+        if (copy($csource,$ctarget)) {
+	    $r->print('ok<p>');
+            print $logfile "Copied sucessfully.\n\n";
+        } else {
+            my $error=$!;
+	    $r->print('fail, '.$error.'<p>');
+            print $logfile "Copy failed: $error\n\n";
+        }
+        $r->print('<font size=+2><a href="/priv/'.$uname.$fn.
+                  '">Back to '.$fn.'</a></font>'); 
+    } else {
+       $r->print(
+   '<font size=+1 color=red>Please pick a version to retrieve</font><p>');
+       &phaseone($r,$fn,$uname,$udom);
+    }
 }
 
 sub handler {
@@ -79,6 +161,7 @@ sub handler {
   $r->print('<h1>Retrieve previous versions of <tt>'.$fn.'</tt></h1>');
 
   if ($ENV{'form.phase'} eq 'two') {
+      &phasetwo($r,$fn,$uname,$udom);
   } else {
       &phaseone($r,$fn,$uname,$udom);
   }
@@ -86,3 +169,6 @@ sub handler {
   $r->print('</body></html>');
   return OK;  
 }
+
+1;
+__END__