# The LearningOnline Network with CAPA
# Souce Code handler
#
# $Id: lonsource.pm,v 1.3 2004/06/18 15:13:07 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
###


package Apache::lonsource;

use strict;
use Apache::lonnet();
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::lonsequence();
use Apache::Constants qw(:common :http);
use Apache::lonmeta;
use Apache::File;
use Apache::lonlocal;
use HTML::Entities;

sub make_link {
    my ($filename) = @_;
    my $sourcelink = "http://".$ENV{'SERVER_NAME'}.
	"/adm/source/?filename=".$filename;

    return $sourcelink;
}

sub stage_2 {
    my ($r, $filename) = @_;
    $r->print("Coming Soon");
    return OK;
}

sub print_item {
    my ($r, $filename) = @_;
    $filename = "/home/httpd/html".$filename;
    my $file_output = &Apache::lonnet::getfile($filename);
    my ($rows,$cols) = &Apache::edit::textarea_sizes(\$file_output);
    $r->print('<textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
	      &HTML::Entities::encode($file_output,'<>&"').'</textarea>');
    return OK;
	
}


sub handler { 
    my $r=shift;
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
					    ['filename']);
    my $filename = $ENV{'form.filename'};
    my $source = &Apache::lonnet::metadata($filename,'sourceavail');
    if ($source ne 'open') {
	$ENV{'user.error.msg'}="$filename:cre:1:1:Source code not available";
	return HTTP_NOT_ACCEPTABLE;
    }
    if ((!&Apache::lonnet::allowed('cre')) ||
	(!&Apache::lonnet::allowed('bre',$filename))) {
	$ENV{'user.error.msg'}="$filename:bre:1:1:Access to resource denied";
	return HTTP_NOT_ACCEPTABLE;
    }
    if ($ENV{'form.action'} eq 'stage2') { 
	&stage_2($r, $ENV{'form.filename'});
    } else {
	&Apache::loncommon::content_type($r,'text/html');
	$r->send_http_header;
	$r->print('		    <form name="copy" action="/adm/source/" target="_parent" method="post">
				<input type="button" value="Close Window" name="close" onClick="window.close()">
		      <input type="hidden" name="filename" value="'.$filename.'" />
		      <input type="hidden" name="action" value="stage2" />
	              <input type="submit" value="Copy to CSTR" />
		    </form>');
	$r->print('<hr />');
	&print_item($r, $ENV{'form.filename'});
    }
    return OK;
}

1;