#!/usr/bin/perl
#
# Copyright 2000-2002 Katipo Communications
#
# 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 POSIX qw( ceil );

use C4::Auth   qw( get_template_and_user );
use C4::Output qw( output_html_with_http_headers );
use C4::Context;
use C4::Search        qw( new_record_from_zebra );
use C4::Biblio        qw( TransformMarcToKoha );
use C4::Creators::Lib qw( html_table );

use Koha::Logger;
use Koha::Items;
use Koha::ItemTypes;
use Koha::SearchEngine::QueryBuilder;
use Koha::SearchEngine::Search;

my $query = CGI->new;

my $type      = $query->param('type');
my $op        = $query->param('op') || '';
my $batch_id  = $query->param('batch_id');
my @limits    = split( " AND ", $query->param('limits') || "" );
my $startfrom = $query->param('startfrom') || 1;
my ( $template, $loggedinuser, $cookie ) = ( undef, undef, undef );
my (
    $total_hits,  $total, $error,
    $marcresults, $idx,   $datefrom, $dateto, $ccl_textbox
);
my $resultsperpage  = C4::Context->preference('numSearchResults') || '20';
my $show_results    = 0;
my $display_columns = [
    { _add              => { label => "Add Item",       link_field => 1 } },
    { _item_call_number => { label => "Call Number",    link_field => 0 } },
    { _date_accessioned => { label => "Accession Date", link_field => 0 } },
    { _barcode          => { label => "Barcode",        link_field => 0 } },
    { select            => { label => "Select",         value      => "_item_number" } },
];

if ( $op eq "do_search" ) {
    $idx         = $query->param('idx');
    $ccl_textbox = $query->param('ccl_textbox');

    $datefrom = $query->param('datefrom');
    $dateto   = $query->param('dateto');

    my $builder  = Koha::SearchEngine::QueryBuilder->new( { index => $Koha::SearchEngine::BIBLIOS_INDEX } );
    my $searcher = Koha::SearchEngine::Search->new( { index => $Koha::SearchEngine::BIBLIOS_INDEX } );

    if ( !@limits ) {
        push( @limits, "acqdate,st-date-normalized=$datefrom - $dateto" );
    }

    my (
        $build_error, $query, $simple_query, $query_cgi,
        $query_desc,  $limit, $limit_cgi,    $limit_desc,
        $query_type
    ) = $builder->build_query_compat( undef, [$ccl_textbox], [$idx], \@limits );

    my $offset = $startfrom > 1 ? $startfrom - 1 : 0;

    my ( $error, $results, $facets ) = $searcher->search_compat(
        $query, $simple_query, [],          ['biblioserver'], $resultsperpage, $offset,
        undef,  undef,         $query_type, undef
    );

    if ( !defined $error && defined($results) && @{ $results->{biblioserver}{RECORDS} } > 0 ) {
        $show_results = grep { defined $_ } @{ $results->{biblioserver}{RECORDS} };
        $marcresults  = [ grep { defined $_ } @{ $results->{biblioserver}{RECORDS} } ];
        $total_hits   = $results->{biblioserver}{hits};
    } else {
        Koha::Logger->get->warn("ERROR label-item-search: no results from simple_search_compat");

        # leave $show_results undef
    }
}

if ($show_results) {
    my $hits        = $show_results;
    my @results_set = ();
    my @items       = ();
    for ( my $i = 0 ; $i < $hits ; $i++ ) {
        my @row_data = ();

        #DEBUG Notes: Decode the MARC record from each resulting MARC record...
        my $marcrecord = C4::Search::new_record_from_zebra( 'biblioserver', $marcresults->[$i] );

        #DEBUG Notes: Transform it to Koha form...
        my $biblio = TransformMarcToKoha( { record => $marcrecord } );

        #DEBUG Notes: Stuff the bib into @biblio_data...
        push( @results_set, $biblio );
        my $biblionumber = $biblio->{'biblionumber'};

        #DEBUG Notes: Grab the item numbers associated with this MARC record...
        my $items = Koha::Items->search( { biblionumber => $biblionumber }, { order_by => { -desc => 'itemnumber' } } );

        #DEBUG Notes: Retrieve the item data for each number...
        while ( my $item = $items->next ) {

            #DEBUG Notes: Build an array element 'item' of the correct bib (results) hash which contains item-specific data...
            if ( $item->biblionumber eq $results_set[$i]->{'biblionumber'} ) {
                my $item_data;
                $item_data->{'_item_number'}      = $item->itemnumber;
                $item_data->{'_item_call_number'} = ( $item->itemcallnumber || 'NA' );
                $item_data->{'_date_accessioned'} = $item->dateaccessioned;
                $item_data->{'_barcode'}          = ( $item->barcode || 'NA' );
                $item_data->{'_add'}              = $item->itemnumber;
                push @row_data, $item_data;
            }
            $results_set[$i]->{'item_table'} = html_table( $display_columns, \@row_data );
        }
    }

    ( $template, $loggedinuser, $cookie ) = get_template_and_user(
        {
            template_name => "labels/result.tt",
            query         => $query,
            type          => "intranet",
            flagsrequired => { borrowers => 'edit_borrowers' },
            flagsrequired => { catalogue => 1 },
        }
    );

    # build page nav stuff.
    my @numbers;
    $total = $total_hits;

    my (
        $from, $to, $startfromnext, $startfromprev, $displaynext,
        $displayprev
    );

    if ( $total > $resultsperpage ) {
        my $num_of_pages = ceil( $total / $resultsperpage + 1 );
        for ( my $page = 1 ; $page < $num_of_pages ; $page++ ) {
            my $startfrm = ( ( $page - 1 ) * $resultsperpage ) + 1;
            push @numbers,
                {
                number    => $page,
                startfrom => $startfrm
                };
        }

        $from          = $startfrom;
        $startfromprev = $startfrom - $resultsperpage;
        $startfromnext = $startfrom + $resultsperpage;

        $to =
              $startfrom + $resultsperpage > $total
            ? $total
            : $startfrom + $resultsperpage - 1;

        # multi page display
        $displaynext = 0;
        $displayprev = $startfrom > 1 ? $startfrom : 0;

        $displaynext = 1 if $to < $total_hits;

    } else {
        $from        = 1;
        $to          = $total_hits;
        $displayprev = 0;
        $displaynext = 0;
    }

    $template->param(
        total          => $total_hits,
        from           => $from,
        to             => $to,
        startfromnext  => $startfromnext,
        startfromprev  => $startfromprev,
        startfrom      => $startfrom,
        displaynext    => $displaynext,
        displayprev    => $displayprev,
        resultsperpage => $resultsperpage,
        numbers        => \@numbers,
    );

    $template->param(
        results     => ( $show_results ? 1 : 0 ),
        result_set  => \@results_set,
        batch_id    => $batch_id,
        type        => $type,
        idx         => $idx,
        ccl_textbox => $ccl_textbox,
        limits      => join( " AND ", @limits ),
    );
}

#
#   search section
#

else {
    ( $template, $loggedinuser, $cookie ) = get_template_and_user(
        {
            template_name => "labels/search.tt",
            query         => $query,
            type          => "intranet",
            flagsrequired => { catalogue => 1 },
        }
    );
    my $itemtypes = Koha::ItemTypes->search;
    my @itemtypeloop;
    while ( my $itemtype = $itemtypes->next ) {

        # FIXME This must be improved:
        # - pass the iterator to the template
        # - display the translated_description
        my %row = (
            value       => $itemtype->itemtype,
            description => $itemtype->description,
        );
        push @itemtypeloop, \%row;
    }
    $template->param(
        itemtypeloop => \@itemtypeloop,
        batch_id     => $batch_id,
        type         => $type,
    );

}

$template->param( idx => $idx );

# Print the page
output_html_with_http_headers $query, $cookie, $template->output;