#!/usr/bin/perl

# Copyright Koha development team 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 Modern::Perl;

use CGI qw ( -utf8 );
use XML::Simple;

use C4::Labels;
use C4::Auth qw( check_cookie_auth );

my $cgi = CGI->new;
my ($auth_status) =
    check_cookie_auth( $cgi->cookie('CGISESSID'), { catalogue => 1 } );
if ( $auth_status ne "ok" ) {
    print $cgi->header( -type => 'text/plain', -status => '403 Forbidden' );
    exit 0;
}

my $batch_id;
my @label_ids;
my @item_numbers;
$batch_id    = $cgi->param('batch_id') if $cgi->param('batch_id');
my $template_id = $cgi->param('template_id') || undef;
my $layout_id   = $cgi->param('layout_id') || undef;
@label_ids   = $cgi->multi_param('label_id') if $cgi->param('label_id');
@item_numbers  = $cgi->multi_param('item_number') if $cgi->param('item_number');

my $items = undef;

my $xml_file = (@label_ids || @item_numbers ? "label_single_" . scalar(@label_ids || @item_numbers) : "label_batch_$batch_id");
print $cgi->header(-type        => 'text/xml',
                   -encoding    => 'utf-8',
                   -attachment  => "$xml_file.xml",
                    );

my $batch = C4::Labels::Batch->retrieve(batch_id => $batch_id);
my $template = C4::Labels::Template->retrieve(template_id => $template_id, profile_id => 1);
my $layout = C4::Labels::Layout->retrieve(layout_id => $layout_id);


if (@label_ids) {
    my $batch_items = $batch->get_attr('items');
    grep {
        my $label_id = $_;
        push(@{$items}, grep{$_->{'label_id'} == $label_id;} @{$batch_items});
    } @label_ids;
}
elsif (@item_numbers) {
    grep {
        push(@{$items}, {item_number => $_});
    } @item_numbers;
}
else {
    $items = $batch->get_attr('items');
}

my $xml = XML::Simple->new();
my $xml_data = {'label' => []};

my $item_count = 0;

foreach my $item (@$items) {
    push(@{$xml_data->{'label'}}, {'item_number' => $item->{'item_number'}});
    my $label = C4::Labels::Label->new(
                                    batch_id            => $batch_id,
                                    item_number         => $item->{'item_number'},
                                    format_string       => $layout->get_attr('format_string'),
                                      );
    my $format_string = $layout->get_attr('format_string');
    my @data_fields = map { $_ eq 'callnumber' ? 'itemcallnumber' : $_ } # see bug 5653 
                      split(/, /, $format_string);
    my $csv_data = $label->csv_data();
    for (my $i = 0; $i <= (scalar(@data_fields) - 1); $i++) {
        push(@{$xml_data->{'label'}[$item_count]->{$data_fields[$i]}}, $$csv_data[$i]);
    }
    $item_count++;
}

#die "XML DATA:\n" . Dumper($xml_data);

my $xml_out = $xml->XMLout($xml_data);
#die "XML OUT:\n" . Dumper($xml_out);
print $xml_out;

__END__

=head1 NAME

labels/label-create-xml.pl - A script for creating a xml export of labels and label batches in Koha

=head1 ABSTRACT

This script provides the means of producing a xml of labels for items either individually, in groups, or in batches from within Koha. This particular script is provided more as
a demonstration of the multitude of formats Koha labels could be exported in based on the current Label Creator API.

=head1 AUTHOR

Chris Nighswonger <cnighswonger AT foundations DOT edu>

=head1 COPYRIGHT

Copyright 2009 Foundations Bible College.

=head1 LICENSE

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>.

=head1 DISCLAIMER OF WARRANTY

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.

=cut