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#!/usr/bin/env 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA


use strict;
use warnings;
use Try::Tiny;
use CGI;
use C4::Auth;
use C4::Branch;
use C4::Koha;
use C4::Serials; #uses getsubscriptionfrom biblionumber
use C4::Output;
use C4::Biblio;
use C4::Items;
use C4::Circulation;
use C4::Tags qw(get_tags);
use C4::Courses qw/GetCourseReservesForBiblio/;
use C4::Dates qw/format_date/;
use C4::XISBN qw(get_xisbns get_biblionumber_from_isbn);
use C4::External::Amazon;
use C4::External::Syndetics qw(get_syndetics_index get_syndetics_summary get_syndetics_toc get_syndetics_excerpt get_syndetics_reviews get_syndetics_anotes );
use C4::Review;
use C4::Serials;
use C4::Members;
use C4::VirtualShelves;
use C4::XSLT;

BEGIN {
if (C4::Context->preference('BakerTaylorEnabled')) {
require C4::External::BakerTaylor;
import C4::External::BakerTaylor qw(&image_url &link_url);
}
}

my $query = new CGI;
my ( $template, $borrowernumber, $cookie ) = get_template_and_user(
    {
        template_name => "opac-detail.tmpl",
        query => $query,
        type => "opac",
        authnotrequired => 1,
        flagsrequired => { borrow => 1 },
    }
);

my $biblionumber = $query->param('biblionumber') || $query->param('bib');

$template->param( 'AllowOnShelfHolds' => C4::Context->preference('AllowOnShelfHolds') );
$template->param( 'ItemsIssued' => CountItemsIssued( $biblionumber ) );

my $record = GetMarcBiblio($biblionumber);
$template->param( biblionumber => $biblionumber );
# XSLT processing of some stuff
if (C4::Context->preference("OPACXSLTDetailsDisplay") ) {
    $template->param(
        'XSLTBloc' => XSLTParse4Display($biblionumber, $record, 'Detail', 'opac') );
}

$template->param('OPACShowCheckoutName' => C4::Context->preference("OPACShowCheckoutName") );
# change back when ive fixed request.pl
my @all_items = &GetItemsInfo( $biblionumber, 'opac' );
my @opac_items;
for my $itm (@all_items) {
  push @opac_items, $itm if (! $itm->{suppress});
}
my @items;
@items = @opac_items unless C4::Context->preference('hidelostitems');

if (C4::Context->preference('hidelostitems')) {
    # Hide host items
    for my $itm (@opac_items) {
        push @items, $itm unless $itm->{itemlost};
    }
}
my $dat = &GetBiblioData($biblionumber);

if (!$dat) {
    print $query->redirect("/cgi-bin/koha/errors/404.pl");
    exit;
}

my $itemtypes = GetItemTypes();
my $itemstatuses = GetOtherItemStatus();
# imageurl:
my $itemtype = $dat->{'itemtype'};
if ( $itemtype ) {
    $dat->{'imageurl'} = getitemtypeimagelocation( 'opac', $itemtypes->{$itemtype}->{'imageurl'} );
    $dat->{'description'} = $itemtypes->{$itemtype}->{'description'};
}
my $shelflocations =GetKohaAuthorisedValues('items.location',$dat->{'frameworkcode'},undef,1);
my $collections = GetKohaAuthorisedValues('items.ccode',$dat->{'frameworkcode'},undef,1);

#coping with subscriptions
my $subscriptionsnumber = CountSubscriptionFromBiblionumber($biblionumber);
my @subscriptions = GetSubscriptions( $dat->{title}, $dat->{issn}, $biblionumber );

my @subs;
$dat->{'serial'}=1 if $subscriptionsnumber;
foreach my $subscription (@subscriptions) {
    my $serials_to_display;
    my %cell;
    $cell{subscriptionid} = $subscription->{subscriptionid};
    $cell{subscriptionnotes} = $subscription->{notes};
    $cell{branchcode} = $subscription->{branchcode};
    $cell{branchname} = GetBranchName($subscription->{branchcode});
    $cell{hasalert} = $subscription->{hasalert};
    #get the three latest serials.
    $serials_to_display = $subscription->{opacdisplaycount};
    $serials_to_display = C4::Context->preference('OPACSerialIssueDisplayCount') unless $serials_to_display;
$cell{opacdisplaycount} = $serials_to_display;
    $cell{latestserials} =
      GetLatestSerials( $subscription->{subscriptionid}, $serials_to_display );
    push @subs, \%cell;
}

$dat->{'count'} = scalar(@items);

my $biblio_authorised_value_images = C4::Items::get_authorised_value_images( C4::Biblio::get_biblio_authorised_values( $biblionumber, $record ) );

my $norequests = 1;
my $branches = GetBranches();
my %itemfields;
my $item_count = 0;
my $prefloc = C4::Context->preference("ItemLocation");

foreach my $itm (@items) {
    next unless $itm;
    $norequests = 0
       if ( (not $itm->{'wthdrawn'} )
         && (not $itm->{'itemlost'} )
         && ($itm->{'itemnotforloan'}<0 || not $itm->{'itemnotforloan'} )
&& (not $itemtypes->{$itm->{'itype'}}->{notforloan} )
         && ($itm->{'itemnumber'} ) );

    if ( defined $itm->{'publictype'} ) {
        # I can't actually find any case in which this is defined. --amoore 2008-12-09
        $itm->{ $itm->{'publictype'} } = 1;
    }
    $itm->{datedue} = format_date($itm->{datedue});
    $itm->{datelastseen} = format_date($itm->{datelastseen});

    # get collection code description, too
    if ( my $ccode = $itm->{'ccode'} ) {
        $itm->{'ccode'} = $collections->{$ccode} if ( defined($collections) && exists( $collections->{$ccode} ) );
    }
    if ( defined $itm->{'location'} ) {
        $itm->{'location_description'} = $shelflocations->{ $itm->{'location'} };
    }
    $itm->{'location'} = ''; #prefloc = 'none'
    if ($prefloc eq 'homedesc') { $itemfields{'location'} = _locname($branches,$itm->{'homebranch'}) }
    elsif ($prefloc eq 'homecode') { $itemfields{'location'} = $itm->{'homebranch'} }
    elsif ($prefloc eq 'currentdesc') { $itemfields{'location'} = $itm->{'branchname'} }
    elsif ($prefloc eq 'currentcode') { $itemfields{'location'} = _loccode($branches,$itm->{'branchname'}) }
    $$itm{library} = $itemfields{location};

    if (exists $itm->{itype} && defined($itm->{itype}) && exists $itemtypes->{ $itm->{itype} }) {
        $itm->{'imageurl'} = getitemtypeimagelocation( 'opac', $itemtypes->{ $itm->{itype} }->{'imageurl'} );
        $itm->{'description'} = $itemtypes->{ $itm->{itype} }->{'description'};
    }
    foreach (qw(ccode enumchron copynumber itemnotes uri)) {
        $itemfields{$_} = 1 if ($itm->{$_});
    }

     # walk through the item-level authorised values and populate some images
     my $item_authorised_value_images = C4::Items::get_authorised_value_images( C4::Items::get_item_authorised_values( $itm->{'itemnumber'} ) );
     # warn( Data::Dumper->Dump( [ $item_authorised_value_images ], [ 'item_authorised_value_images' ] ) );

     if ( $itm->{'itemlost'} ) {
         my $lostimageinfo = List::Util::first { $_->{'category'} eq 'LOST' } @$item_authorised_value_images;
         $itm->{'lostimageurl'} = $lostimageinfo->{ 'imageurl' };
         $itm->{'lostimagelabel'} = $lostimageinfo->{ 'label' };
     }
     
     if ($itm->{'reserve_status'}){
       if( $itm->{'reserve_status'} eq "Attached"){ $itm->{'waiting'} = 1; }
       $template->param( totalreserves => $itm->{'reserve_count'});
       $template->param( activereserves => $itm->{'active_reserve_count'});
     }
    
     my ( $transfertwhen, $transfertfrom, $transfertto ) = GetTransfers($itm->{itemnumber});
     if ( defined( $transfertwhen ) && $transfertwhen ne '' ) {
        $itm->{transfertwhen} = format_date($transfertwhen);
        $itm->{transfertfrom} = $branches->{$transfertfrom}{branchname};
        $itm->{transfertto} = $branches->{$transfertto}{branchname};
     }

     if ($itm->{'otherstatus'}) {
       foreach my $istatus (@$itemstatuses) {
         if ($istatus->{'statuscode'} eq $itm->{'otherstatus'}) {
           $itm->{'otherstatus_description'} = $istatus->{'description'};
           $norequests = 1 if (!$istatus->{'holdsallowed'});
           last;
         }
       }
     }
     $items[$item_count] = $itm;
     $item_count++;
}
## get a more or less accurate count of reserves for this bib
my($cnt,$toss) = C4::Reserves::GetReservesFromBiblionumber($biblionumber);
$template->param(totalreserves=>$cnt);

## get notes and subjects from MARC record
my $dbh = C4::Context->dbh;
my $marcflavour = C4::Context->preference("marcflavour");
my $marcnotesarray = GetMarcNotes ($record,$marcflavour);
my $marcauthorsarray = GetMarcAuthors ($record,$marcflavour);
my $marcsubjctsarray = GetMarcSubjects($record,$marcflavour);
my $marcseriesarray = GetMarcSeries ($record,$marcflavour);
my $marcurlsarray = GetMarcUrls ($record,$marcflavour);
my $marcserialsarray= GetMarcSeriesSummaries($record,$marcflavour,"866");
my $marcserialssupplementsarray = GetMarcSeriesSummaries($record,$marcflavour,"867");
my $subtitle = C4::Biblio::get_koha_field_from_marc('bibliosubtitle', 'subtitle', $record, '');

    $template->param(
                     MARCNOTES => $marcnotesarray,
                     MARCSUBJCTS => $marcsubjctsarray,
                     MARCAUTHORS => $marcauthorsarray,
                     MARCSERIES => $marcseriesarray,
                     MARCURLS => $marcurlsarray,
                     serials_summaries => $marcserialsarray,
                     serials_supplements => $marcserialssupplementsarray,
                     norequests => $norequests,
                     RequestOnOpac => C4::Context->preference("RequestOnOpac"),
                     itemdata_ccode => $itemfields{ccode},
                     itemdata_enumchron => $itemfields{enumchron},
                     itemdata_uri => $itemfields{uri},
                     itemdata_copynumber => $itemfields{copynumber},
                     itemdata_itemnotes => $itemfields{itemnotes},
                     itemdata_location => $itemfields{location},
                     authorised_value_images => $biblio_authorised_value_images,
                     subtitle => $subtitle,
    );

foreach ( keys %{$dat} ) {
    $template->param( "$_" => defined $dat->{$_} ? $dat->{$_} : '' );
}

# some useful variables for enhanced content;
# in each case, we're grabbing the first value we find in
# the record and normalizing it
my $upc = GetNormalizedUPC($record,$marcflavour);
my $ean = GetNormalizedEAN($record,$marcflavour);
my $oclc = GetNormalizedOCLCNumber($record,$marcflavour);
my $isbn = GetNormalizedISBN(undef,$record,$marcflavour);
my $content_identifier_exists = 1 if ($isbn or $ean or $oclc or $upc);
$template->param(
normalized_upc => $upc,
normalized_ean => $ean,
normalized_oclc => $oclc,
normalized_isbn => $isbn,
content_identifier_exists => $content_identifier_exists,
);

# COinS format FIXME: for books Only
my $coins = try {
    return GetCOinSBiblio($biblionumber)
}
catch {
    warn $_;
    return undef;
};

$template->param(ocoins => $coins);

my $loggedincommenter;
my $reviews;
if (defined $borrowernumber) {
    $reviews = getreviews( $biblionumber, 1 );
    foreach ( @$reviews ) {
        my $borrowerData = GetMember($_->{borrowernumber},'borrowernumber');

        # setting some borrower info into this hash
        $_->{title} = $borrowerData->{'title'};
        $_->{surname} = $borrowerData->{'surname'};
        $_->{firstname} = $borrowerData->{'firstname'};
        $_->{userid} = $borrowerData->{'userid'};
        $_->{cardnumber} = $borrowerData->{'cardnumber'};
        $_->{datereviewed} = format_date($_->{datereviewed});

        if ($borrowerData->{'borrowernumber'} eq $borrowernumber) {
            $_->{your_comment} = 1;
            $loggedincommenter = 1;
}
    }
}

if(C4::Context->preference("ISBD")) {
$template->param(ISBD => 1);
}

## primary and secondary sort by ActiveBranch then DefaultItemSort or
## by DefaultItemSort only if ..ShowActiveBranch.. is off.
my $activefirst = C4::Context->preference('OPACShowActiveBranchFirstInResults');
my $sortby = C4::Context->preference('OPACDefaultItemSort') || 'itemtype';
my @f = qw(library itemtype location_description itemcallnumber);
my $sorted = 0;
if (!!$activefirst) {
   my $opacconf
       = C4::Koha::GetOpacConfigByHostname(\&C4::Koha::CgiOrPlackHostnameFinder);
   my $activebranch = $opacconf->{activebranch} || $ENV{KOHA_ACTIVE_BRANCH};
   $activebranch ||= ($borrowernumber)
      ? GetMember($borrowernumber)->{branchcode}
      : '';
   if ($activebranch) {
      ## couldn't put parentheses around this to separate logical-or
      #($$a{homebranch} eq $activebranch)? -1:1
      foreach(@items) { $$_{_active}=($$_{homebranch} eq $activebranch)?1:0 }
      @items = sort { $$b{_active} <=> $$a{_active}
                   || $$a{$sortby} cmp $$b{$sortby} } @items;
      $sorted = 1;
   }
}
@items = sort{ ($$a{$sortby}//'') cmp ($$b{$sortby}//'') } @items unless $sorted;

$template->param(
    ITEM_RESULTS => \@items,
    subscriptionsnumber => $subscriptionsnumber,
    biblionumber => $biblionumber,
    subscriptions => \@subs,
    subscriptionsnumber => $subscriptionsnumber,
    reviews => $reviews,
    loggedincommenter => $loggedincommenter
);

# Lists

if (C4::Context->preference("virtualshelves") ) {
   $template->param( 'GetShelves' => GetBibliosShelves( $biblionumber ) );
}


# XISBN Stuff
if (C4::Context->preference("OPACFRBRizeEditions")==1) {
    eval {
        $template->param(
            XISBNS => get_xisbns($isbn)
        );
    };
    if ($@) { warn "XISBN Failed $@"; }
}
# Amazon.com Stuff
if ( C4::Context->preference("OPACAmazonEnabled") ) {
    $template->param( AmazonTld => get_amazon_tld() );
    my $amazon_reviews = C4::Context->preference("OPACAmazonReviews");
    my $amazon_similars = C4::Context->preference("OPACAmazonSimilarItems");
    my @services;
    if ( $amazon_reviews ) {
        push( @services, 'EditorialReview', 'Reviews' );
    }
    if ( $amazon_similars ) {
        push( @services, 'Similarities' );
    }
    my $amazon_details = &get_amazon_details( $isbn, $record, $marcflavour, \@services );
    my $similar_products_exist;
    if ( $amazon_reviews ) {
        my $item = $amazon_details->{Items}->{Item}->[0];
        my $customer_reviews = \@{ $item->{CustomerReviews}->{Review} };
        for my $one_review ( @$customer_reviews ) {
            $one_review->{Date} = format_date($one_review->{Date});
        }
        my $editorial_reviews = \@{ $item->{EditorialReviews}->{EditorialReview} };
        my $average_rating = $item->{CustomerReviews}->{AverageRating} || 0;
        $template->param( amazon_average_rating => $average_rating * 20);
        $template->param( AMAZON_CUSTOMER_REVIEWS => $customer_reviews );
        $template->param( AMAZON_EDITORIAL_REVIEWS => $editorial_reviews );
    }
    if ( $amazon_similars ) {
        my $item = $amazon_details->{Items}->{Item}->[0];
        my @similar_products;
        for my $similar_product (@{ $item->{SimilarProducts}->{SimilarProduct} }) {
            # do we have any of these isbns in our collection?
            my $similar_biblionumbers = get_biblionumber_from_isbn($similar_product->{ASIN});
            # verify that there is at least one similar item
            if (scalar(@$similar_biblionumbers)){
                $similar_products_exist++ if ($similar_biblionumbers && $similar_biblionumbers->[0]);
                push @similar_products, +{ similar_biblionumbers => $similar_biblionumbers, title => $similar_product->{Title}, ASIN => $similar_product->{ASIN} };
            }
        }
        $template->param( OPACAmazonSimilarItems => $similar_products_exist );
        $template->param( AMAZON_SIMILAR_PRODUCTS => \@similar_products );
    }
}

my $syndetics_elements;

if ( C4::Context->preference("SyndeticsEnabled") ) {
eval {
    $syndetics_elements = &get_syndetics_index($isbn,$upc,$oclc);
for my $element (values %$syndetics_elements) {
$template->param("Syndetics$element"."Exists" => 1 );
#warn "Exists: "."Syndetics$element"."Exists";
}
    };
    warn $@ if $@;
}

if ( C4::Context->preference("SyndeticsEnabled")
        && C4::Context->preference("SyndeticsSummary")
        && ( exists($syndetics_elements->{'SUMMARY'}) || exists($syndetics_elements->{'AVSUMMARY'}) ) ) {
eval {
my $syndetics_summary = &get_syndetics_summary($isbn,$upc,$oclc, $syndetics_elements);
$template->param( SYNDETICS_SUMMARY => $syndetics_summary );
};
warn $@ if $@;

}

if ( C4::Context->preference("SyndeticsEnabled")
        && C4::Context->preference("SyndeticsTOC")
        && exists($syndetics_elements->{'TOC'}) ) {
eval {
    my $syndetics_toc = &get_syndetics_toc($isbn,$upc,$oclc);
    $template->param( SYNDETICS_TOC => $syndetics_toc );
};
warn $@ if $@;
}

if ( C4::Context->preference("SyndeticsEnabled")
    && C4::Context->preference("SyndeticsExcerpt")
    && exists($syndetics_elements->{'DBCHAPTER'}) ) {
    eval {
    my $syndetics_excerpt = &get_syndetics_excerpt($isbn,$upc,$oclc);
    $template->param( SYNDETICS_EXCERPT => $syndetics_excerpt );
    };
warn $@ if $@;
}

if ( C4::Context->preference("SyndeticsEnabled")
    && C4::Context->preference("SyndeticsReviews")) {
    eval {
    my $syndetics_reviews = &get_syndetics_reviews($isbn,$upc,$oclc,$syndetics_elements);
    $template->param( SYNDETICS_REVIEWS => $syndetics_reviews );
    };
warn $@ if $@;
}

if ( C4::Context->preference("SyndeticsEnabled")
    && C4::Context->preference("SyndeticsAuthorNotes")
&& exists($syndetics_elements->{'ANOTES'}) ) {
    eval {
    my $syndetics_anotes = &get_syndetics_anotes($isbn,$upc,$oclc);
    $template->param( SYNDETICS_ANOTES => $syndetics_anotes );
    };
    warn $@ if $@;
}

# LibraryThingForLibraries ID Code and Tabbed View Option
if( C4::Context->preference('LibraryThingForLibrariesEnabled') )
{
$template->param(LibraryThingForLibrariesID =>
C4::Context->preference('LibraryThingForLibrariesID') );
$template->param(LibraryThingForLibrariesTabbedView =>
C4::Context->preference('LibraryThingForLibrariesTabbedView') );
}


# Babelthèque
if ( C4::Context->preference("Babeltheque") ) {
    $template->param(
        Babeltheque => 1,
    );
}

# Shelf Browser Stuff
if (C4::Context->preference("OPACShelfBrowser") && $query->param('shelfbrowse_itemnumber')) {
    # pick the first itemnumber unless one was selected by the user
    my $starting_itemnumber = $query->param('shelfbrowse_itemnumber'); # || $items[0]->{itemnumber};
    $template->param( OpenOPACShelfBrowser => 1) if $starting_itemnumber;
    # find the right cn_sort value for this item
    my ($starting_cn_sort, $starting_homebranch, $starting_location);
    my $sth_get_cn_sort = $dbh->prepare("SELECT cn_sort,homebranch,location from items where itemnumber=?");
    $sth_get_cn_sort->execute($starting_itemnumber);
    while (my $result = $sth_get_cn_sort->fetchrow_hashref()) {
        $starting_cn_sort = $result->{'cn_sort'};
        $starting_homebranch->{code} = $result->{'homebranch'};
        $starting_homebranch->{description} = $branches->{$result->{'homebranch'}}{branchname};
        $starting_location->{code} = $result->{'location'};
        $starting_location->{description} = GetAuthorisedValueDesc('','', $result->{'location'} ,'','','LOC','1');
    
    }
    
    ## List of Previous Items
    # order by cn_sort, which should include everything we need for ordering purposes (though not
    # for limits, those need to be handled separately
    my $sth_shelfbrowse_previous;
    if (defined $starting_location->{code}) {
      $sth_shelfbrowse_previous = $dbh->prepare("
SELECT *
FROM items
USE INDEX (cn_sortindex)
WHERE
((cn_sort = ? AND itemnumber < ?) OR cn_sort < ?) AND
homebranch = ? AND location = ?
ORDER BY cn_sort DESC, itemnumber DESC LIMIT 3
");
      $sth_shelfbrowse_previous->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code}, $starting_location->{code});
    } else {
      $sth_shelfbrowse_previous = $dbh->prepare("
SELECT *
FROM items
USE INDEX (cn_sortindex)
WHERE
((cn_sort = ? AND itemnumber < ?) OR cn_sort < ?) AND
homebranch = ?
ORDER BY cn_sort DESC, itemnumber DESC LIMIT 3
");
      $sth_shelfbrowse_previous->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code});
    }
    my @previous_items;
    while (my $this_item = $sth_shelfbrowse_previous->fetchrow_hashref()) {
        my $sth_get_biblio = $dbh->prepare("SELECT biblio.*,biblioitems.isbn AS isbn FROM biblio LEFT JOIN biblioitems ON biblio.biblionumber=biblioitems.biblionumber WHERE biblio.biblionumber=?");
        $sth_get_biblio->execute($this_item->{biblionumber});
        while (my $this_biblio = $sth_get_biblio->fetchrow_hashref()) {
$this_item->{'title'} = $this_biblio->{'title'};
my $this_record = GetMarcBiblio($this_biblio->{'biblionumber'});
$this_item->{'browser_normalized_upc'} = GetNormalizedUPC($this_record,$marcflavour);
$this_item->{'browser_normalized_oclc'} = GetNormalizedOCLCNumber($this_record,$marcflavour);
$this_item->{'browser_normalized_isbn'} = GetNormalizedISBN(undef,$this_record,$marcflavour);
        }
        unshift @previous_items, $this_item;
    }
    
    ## List of Next Items; this also intentionally catches the current item
    my $sth_shelfbrowse_next;
    if (defined $starting_location->{code}) {
      $sth_shelfbrowse_next = $dbh->prepare("
SELECT *
FROM items
USE INDEX (cn_sortindex)
WHERE
((cn_sort = ? AND itemnumber >= ?) OR cn_sort > ?) AND
homebranch = ? AND location = ?
ORDER BY cn_sort, itemnumber LIMIT 3
");
      $sth_shelfbrowse_next->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code}, $starting_location->{code});
    } else {
      $sth_shelfbrowse_next = $dbh->prepare("
SELECT *
FROM items
USE INDEX (cn_sortindex)
WHERE
((cn_sort = ? AND itemnumber >= ?) OR cn_sort > ?) AND
homebranch = ?
ORDER BY cn_sort, itemnumber LIMIT 3
");
      $sth_shelfbrowse_next->execute($starting_cn_sort, $starting_itemnumber, $starting_cn_sort, $starting_homebranch->{code});
    }
    my @next_items;
    while (my $this_item = $sth_shelfbrowse_next->fetchrow_hashref()) {
        my $sth_get_biblio = $dbh->prepare("SELECT biblio.*,biblioitems.isbn AS isbn FROM biblio LEFT JOIN biblioitems ON biblio.biblionumber=biblioitems.biblionumber WHERE biblio.biblionumber=?");
        $sth_get_biblio->execute($this_item->{biblionumber});
        while (my $this_biblio = $sth_get_biblio->fetchrow_hashref()) {
            $this_item->{'title'} = $this_biblio->{'title'};
my $this_record = GetMarcBiblio($this_biblio->{'biblionumber'});
            $this_item->{'browser_normalized_upc'} = GetNormalizedUPC($this_record,$marcflavour);
            $this_item->{'browser_normalized_oclc'} = GetNormalizedOCLCNumber($this_record,$marcflavour);
            $this_item->{'browser_normalized_isbn'} = GetNormalizedISBN(undef,$this_record,$marcflavour);
        }
        push @next_items, $this_item;
    }
    
    # alas, these won't auto-vivify, see http://www.perlmonks.org/?node_id=508481
    my $shelfbrowser_next_itemnumber = $next_items[-1]->{itemnumber} if @next_items;
    my $shelfbrowser_next_biblionumber = $next_items[-1]->{biblionumber} if @next_items;
    
    $template->param(
        starting_homebranch => $starting_homebranch->{description},
        starting_location => $starting_location->{description},
        starting_itemnumber => $starting_itemnumber,
        shelfbrowser_prev_itemnumber => (@previous_items ? $previous_items[0]->{itemnumber} : 0),
        shelfbrowser_next_itemnumber => $shelfbrowser_next_itemnumber,
        shelfbrowser_prev_biblionumber => (@previous_items ? $previous_items[0]->{biblionumber} : 0),
        shelfbrowser_next_biblionumber => $shelfbrowser_next_biblionumber,
        PREVIOUS_SHELF_BROWSE => \@previous_items,
        NEXT_SHELF_BROWSE => \@next_items,
    );
}

if (C4::Context->preference("BakerTaylorEnabled")) {
$template->param(
BakerTaylorEnabled => 1,
BakerTaylorImageURL => &image_url(),
BakerTaylorLinkURL => &link_url(),
BakerTaylorBookstoreURL => C4::Context->preference('BakerTaylorBookstoreURL'),
);
my ($bt_user, $bt_pass);
if ($isbn and
$bt_user = C4::Context->preference('BakerTaylorUsername') and
$bt_pass = C4::Context->preference('BakerTaylorPassword') )
{
$template->param(
BakerTaylorContentURL =>
sprintf("http://contentcafe2.btol.com/ContentCafeClient/ContentCafe.aspx?UserID=%s&Password=%s&ItemKey=%s&Options=Y",
$bt_user,$bt_pass,$isbn)
);
}
}

my $tag_quantity;
if (C4::Context->preference('TagsEnabled') and $tag_quantity = C4::Context->preference('TagsShowOnDetail')) {
$template->param(
TagsEnabled => 1,
TagsShowOnDetail => $tag_quantity,
TagsInputOnDetail => C4::Context->preference('TagsInputOnDetail')
);
$template->param(TagLoop => get_tags({biblionumber=>$biblionumber, approved=>1,
'sort'=>'-weight', limit=>$tag_quantity}));
}

if (C4::Context->preference('CourseReserves')) {
    my ($course_reserves,$course_reserves_exist) = GetCourseReservesForBiblio($biblionumber,'OPAC');
    $template->param(
        CourseReservesExist => $course_reserves_exist,
        CourseReservesLoop => $course_reserves
    );
}

#Search for title in links
if (my $search_for_title = C4::Context->preference('OPACSearchForTitleIn')){
    $$dat{author} ||= '';
    $search_for_title =~ s/{AUTHOR}/$dat->{author}/g;
    $search_for_title =~ s/{TITLE}/$dat->{title}/g;
    $search_for_title =~ s/{ISBN}/$isbn/g;
    $dat->{title} =~ s/\/+$//; # remove trailing slash
    $dat->{title} =~ s/\s+$//; # remove trailing space
 $template->param('OPACSearchForTitleIn' => $search_for_title);
}


output_html_with_http_headers $query, $cookie, $template->output;

# Running under Plack, this complains as a redefinition.
# I don't know why. This shuts up the warning, though.
no warnings qw(redefine);
sub _locname
{
   my($branches,$bcode) = @_;
   my $bname = '';
   foreach(keys %$branches) {
      if ($bcode eq $_) {
         $bname = $$branches{$_}{branchname};
         last;
      }
   }
   return $bname;
}

sub _loccode
{
   my($branches,$bname) = @_;
   my $bcode = '';
   foreach(keys %$branches) {
      if ($$branches{$_}{branchname} eq $bname) {
         $bcode = $_;
         last;
      }
   }
   return $bcode;
}
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