#!/usr/bin/perl
#
# Copyright 2009 Foundations Bible College.
#
# 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 C4::Context;
use C4::Auth qw( get_template_and_user );
use C4::Output qw( output_html_with_http_headers );
use C4::Creators::Lib qw(
    get_all_layouts
    get_all_templates
    get_output_formats
);
use C4::Labels::Batch;

my $cgi = CGI->new;
my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
    {
        template_name   => "labels/label-print.tt",
        query           => $cgi,
        type            => "intranet",
        flagsrequired   => { catalogue => 1 },
    }
);

my $op = $cgi->param('op') || 'none';
my @label_ids;
@label_ids = $cgi->multi_param('label_id') if $cgi->param('label_id');   # this will handle individual label printing
my @batch_ids;
@batch_ids = $cgi->multi_param('batch_id') if $cgi->param('batch_id');
my $layout_id = $cgi->param('layout_id') || undef;
my $template_id = $cgi->param('template_id') || undef;
my $start_label = $cgi->param('start_label') || 1;
my @item_numbers;
@item_numbers = $cgi->multi_param('item_number') if $cgi->param('item_number');
my $output_format = $cgi->param('output_format') || 'pdf';
my $referer = $cgi->param('referer') || undef;

my $txt_from = $cgi->param('from') || undef;
my $txt_to = $cgi->param('to') || undef;
my $from = int($txt_from) || undef;
my $to = int($txt_to) || undef;
my $barcode_length = length($txt_from) || undef;

my $layouts = undef;
my $templates = undef;
my $output_formats = undef;
my @batches = ();
my $multi_batch_count = scalar(@batch_ids) || ($from && $to) ? 1 : 0;
my $label_count = scalar(@label_ids);
my $item_count = scalar(@item_numbers);

if ($op eq 'export') {
    if (@label_ids) {
        my $label_id_param = '&amp;label_id=';
        $label_id_param .= join ('&amp;label_id=',@label_ids);
        push (@batches, {create_script   => ($output_format eq 'pdf' ? 'label-create-pdf.pl' : 'label-create-csv.pl'),
                         batch_id        => $batch_ids[0],
                         template_id     => $template_id,
                         layout_id       => $layout_id,
                         start_label     => $start_label,
                         label_ids       => $label_id_param,
                         label_count     => scalar(@label_ids),
                        });
        $template->param(
                        batches     => \@batches,
                        referer     => $referer,
                        );
    }
    elsif (@item_numbers) {
        my $item_number_param = '&amp;item_number=';
        $item_number_param .= join ('&amp;item_number=',@item_numbers);
        push (@batches, {create_script   => ($output_format eq 'pdf' ? 'label-create-pdf.pl' : 'label-create-csv.pl'),
                         template_id     => $template_id,
                         layout_id       => $layout_id,
                         start_label     => $start_label,
                         item_numbers    => $item_number_param,
                         label_count     => scalar(@item_numbers),
                        });
        $template->param(
                        batches     => \@batches,
                        referer     => $referer,
                        );
    }
    elsif (@batch_ids) {
        foreach my $batch_id (@batch_ids) {
           push (@batches, {create_script   => ($output_format eq 'pdf' ? 'label-create-pdf.pl' : 'label-create-csv.pl'),
                            batch_id        => $batch_id,
                            template_id     => $template_id,
                            layout_id       => $layout_id,
                            start_label     => $start_label,
                            });
        }
        $template->param(
                        batches     => \@batches,
                        referer     => $referer,
                        );
    }
    elsif ($from and $to) {
        my $dbh = C4::Context->dbh;

        my $sth = $dbh->prepare('SELECT COUNT(*) AS has_barcode FROM creator_layouts WHERE printing_type LIKE("%BAR%") AND layout_id = ?;');
        $sth->execute($layout_id);
        if ($sth->fetchrow_hashref->{'has_barcode'} == 0) {
            $sth = $dbh->prepare('SELECT COUNT(*) AS existing_count FROM items WHERE CAST(barcode AS unsigned) BETWEEN ? AND ?;');
            $sth->execute($from, $to);
            if ($sth->fetchrow_hashref->{'existing_count'} < ($to - $from + 1)) {
                $template->param( warn_empty_range => 1 )
            }
        }

        push (@batches, {create_script   => 'label-create-pdf.pl',
                 from            => $from,
                 to              => $to,
                 barcode_length  => $barcode_length,
                 template_id     => $template_id,
                 layout_id       => $layout_id,
                 start_label     => $start_label,
                 });
       $template->param(
                        batches     => \@batches,
                        referer     => $referer,
                        );
    }
}
elsif ($op eq 'none') {
    # setup select menus for selecting layout and template for this run...
    $referer = $ENV{'HTTP_REFERER'};
    $referer =~ s/^.*?:\/\/.*?(\/.*)$/$1/m;
    @batch_ids = map{{batch_id => $_}} @batch_ids;
    @label_ids = map{{label_id => $_}} @label_ids;
    @item_numbers = map{{item_number => $_}} @item_numbers;
    $templates = get_all_templates( { fields => [ qw( template_id template_code ) ], filters => { creator => "Labels" }, orderby => 'template_code' } );
    $layouts = get_all_layouts( { fields => [ qw( layout_id layout_name ) ], filters => { creator => "Labels" }, orderby => 'layout_name' } );
    $output_formats = get_output_formats();
    $template->param(
                    batch_ids                   => \@batch_ids,
                    label_ids                   => \@label_ids,
                    item_numbers                => \@item_numbers,
                    templates                   => $templates,
                    layouts                     => $layouts,
                    output_formats              => $output_formats,
                    multi_batch_count           => $multi_batch_count,
                    label_count                 => $label_count,
                    item_count                  => $item_count,
                    referer                     => $referer,
                    from                        => $from,
                    to                          => $to,
                    barcode_length              => $barcode_length,
                    txt_from                    => $txt_from,
                    txt_to                      => $txt_to
                    );
}
output_html_with_http_headers $cgi, $cookie, $template->output;