package C4::Scrubber;

# Copyright Liblime 2008
# Parts copyright sys-tech.net 2011
# Copyright PTFS Europe 2011
#
# This file is part of Koha.
#
# Koha 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 3 of the License, or
# (at your option) any later version.
#
# Koha 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 Koha; if not, see <http://www.gnu.org/licenses>.

use strict;
use warnings;
use Carp;
use HTML::Scrubber;

use C4::Context;
use C4::Debug;

our $VERSION = v3.07.00.049;


my %scrubbertypes = (
    default => {}, # place holder, default settings are below as fallbacks in call to constructor
    tag     => {},                                               # uses defaults
    comment => { allow => [qw( br b i em big small strong )], },
    staff   => {
        default => [ 1 => { '*' => 1 } ],
        comment => 1,
    },
);


sub new {
    shift; # ignore our class we are wrapper
    my $type = (@_) ? shift : 'default';
    if ( !exists $scrubbertypes{$type} ) {
        croak "New called with unrecognized type '$type'";
    }
    $debug and carp "Building new Scrubber of type '$type'";
    my $settings = $scrubbertypes{$type};
    my $scrubber = HTML::Scrubber->new(
        allow   => exists $settings->{allow} ? $settings->{allow} : [],
        rules   => exists $settings->{rules} ? $settings->{rules} : [],
        default => exists $settings->{default} ? $settings->{default} : [ 0 => { '*' => 0 } ],
        comment => exists $settings->{comment} ? $settings->{comment} : 0,
        process => 0,
    );
    return $scrubber;
}


1;
__END__

=head1 C4::Sanitize

Standardized wrapper with settings for building HTML::Scrubber tailored to various koha inputs.
More verbose debugging messages are sent in the presence of non-zero $ENV{"DEBUG"}.

The default is to scrub everything, leaving no markup at all.  This is compatible with the expectations
for Tags.

=head2 TODO: Add real perldoc

=cut