--- loncom/homework/lonhomework.pm 2000/07/25 17:45:40 1.1 +++ loncom/homework/lonhomework.pm 2001/01/11 15:20:58 1.31 @@ -1,26 +1,193 @@ # The LON-CAPA Homework handler # Guy Albertelli +# 11/30 Gerd Kortemeyer +# 6/1 Gerd Kortemeyer package Apache::lonhomework; use strict; use Apache::style; use Apache::lonxml; +use Apache::lonnet; +use Apache::inputtags; +use Apache::structuretags; +use Apache::response; +use Apache::hint; +use Apache::outputtags; +use Apache::Constants qw(:common); + +sub get_target { + if ( $ENV{'request.state'} eq "published") { + if ( defined $ENV{'form.submit'}) { + return ('grade', 'web'); + } else { + return ('web'); + } + } elsif ($ENV{'request.state'} eq "construct") { + if ( defined $ENV{'form.preview'}) { + if ( defined $ENV{'form.submit'}) { + return ('grade', 'web'); + } else { + return ('web'); + } + } else { + #return ('edit'); + #edit is currently broken + return ('web'); + } + } + return (); +} + +sub setup_vars { + my ($target) = @_; + return ';' +# return ';$external::target='.$target.';'; +} + +sub send_header { + my ($request)= @_; + $request->print(&Apache::lontexconvert::header()); + $ENV{'request.uri'}=$request->uri; +# $request->print('
'); +} + +sub send_footer { + my ($request)= @_; +# $request->print('
'); + $request->print(&Apache::lontexconvert::footer()); +} + +#@Apache::lonhomework::date_status=(); +#@Apache::lonhomework::date_msg=(); +sub check_date { + my ($id) = @_; + my $date =''; + my $status = ''; + my $datemsg = ''; + my $lastdate = ''; + my $temp; + my $type; + my $passed; + &Apache::lonxml::debug("checking for part :$id:"); + foreach $temp ("opendate","duedate","answerdate") { + $lastdate = $date; + $date = &Apache::lonnet::EXT("resource.$id.$temp"); + &Apache::lonxml::debug("found :$date: for :$temp:"); + if ($date eq '') { + $date = "an unknown date"; $passed = 0; + } elsif ($date eq 'con_lost') { + $date = "an indeterminate date"; $passed = 0; + } else { + if (time < $date) { $passed = 0; } else { $passed = 1; } + $date = localtime $date; + } + if (!$passed) { $type=$temp; last; } + } + &Apache::lonxml::debug("have :$type:$passed:"); + if ($passed) { + $status='SHOW_ANSWER'; + $datemsg=$date; + } elsif ($type eq 'opendate') { + $status='CLOSED'; + $datemsg = "will open on $date"; + } elsif ($type eq 'duedate') { + $status='CAN_ANSWER'; + $datemsg = "is due at $date"; + } elsif ($type eq 'answerdate') { + $status='CLOSED'; + $datemsg = "was due as $lastdate, and answers will be available at $date"; + } + if ($status eq 'CAN_ANSWER') { + #check #tries + my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; + my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); + if ( $tries eq '' ) { $tries = '0'; } + if ( $maxtries eq '' ) { $maxtries = '2'; } + if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } + } + &Apache::lonxml::debug("sending back :$status:$datemsg:"); + if ($ENV{'request.state'} eq "construct") { + &Apache::lonxml::debug("in construction ignoring dates"); + $status='CAN_ANSWER'; + $datemsg='is in under construction'; + } + return ($status,$datemsg); +} sub handler { - my $request=shift; + my $request=$_[0]; + + if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; } + + my (@targets) = &get_target(); - my @parsecontents; - { - my $fh=Apache::File->new($request->filename); - @parsecontents=<$fh>; + if ($ENV{'browser.mathml'}) { + $request->content_type('text/xml'); + } else { + $request->content_type('text/html'); } + $request->send_http_header; + return OK if $request->header_only; - my $parsestring=join('',@parsecontents); + &Apache::lonhomework::send_header($request); - $request->content_type('text/html'); - $request->send_http_header; - $request->print(' -
'); + #check if allowed to see + + foreach my $target (@targets) { + my $file=&Apache::lonnet::filelocation("",$request->uri); + my $problem=&Apache::lonnet::getfile($file); + if ($problem == -1) { + &Apache::lonxml::error(" Unable to find $file"); + $problem=''; + } + + my %mystyle; + my $result = ''; + &Apache::inputtags::initialize_inputtags; + %Apache::lonhomework::results=(); + %Apache::lonhomework::history=&Apache::lonnet::restore; + #ignore error conditions + my ($temp)=keys %Apache::lonhomework::history ; + if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } + if ($target eq 'web' && &Apache::lonnet::symbread() eq '') { + $request->print("Vieiwing this problem as not a student, submissions will be ignored."); + } + if ($target eq 'grade') { + my $resultkey; + foreach $resultkey (sort keys %Apache::lonhomework::history) { + &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}"); + } + &Apache::lonxml::debug("\n
restored values^
\n"); + } + my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); + if ($default == -1) { + &Apache::lonxml::error("Unable to find default_homework.lcpm"); + $default=''; + } + $result = &Apache::lonxml::xmlparse($target, $problem, + $default.&setup_vars($target),%mystyle); + + #$request->print("Result follows:"); + $request->print($result); + #$request->print(":Result ends"); + if ($target eq 'grade') { + + my $resultkey; + foreach $resultkey (sort keys %Apache::lonhomework::results) { + &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}"); + } + &Apache::lonxml::debug("\n
storing values^
\n"); + } + + my ($temp) = keys %Apache::lonhomework::results; + if ( $temp ne '' ) { + &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results)); + } + } + &Apache::lonhomework::send_footer($request); + + return OK; + } 1;