#!/usr/bin/perl

# 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 HTML::Entities;
use C4::Acquisition qw( GetHistory );
use C4::Auth;
use C4::Koha;
use C4::Serials;    #uses getsubscriptionfrom biblionumber
use C4::Output;
use C4::Biblio;
use C4::Items;
use C4::Circulation;
use C4::Reserves;
use C4::Members; # to use GetMember
use C4::Serials;
use C4::XISBN qw(get_xisbns get_biblionumber_from_isbn);
use C4::External::Amazon;
use C4::Search;		# enabled_staff_search_views
use C4::Tags qw(get_tags);
use C4::XSLT;
use C4::Images;
use Koha::DateUtils;
use C4::HTML5Media;
use C4::CourseReserves qw(GetItemCourseReservesInfo);
use C4::Acquisition qw(GetOrdersByBiblionumber);
use Koha::AuthorisedValues;
use Koha::Patrons;
use Koha::Virtualshelves;

my $query = CGI->new();

my $analyze = $query->param('analyze');

my ( $template, $borrowernumber, $cookie, $flags ) = get_template_and_user(
    {
    template_name   =>  'catalogue/detail.tt',
        query           => $query,
        type            => "intranet",
        authnotrequired => 0,
        flagsrequired   => { catalogue => 1 },
    }
);

my $biblionumber = $query->param('biblionumber');
$biblionumber = HTML::Entities::encode($biblionumber);
my $record       = GetMarcBiblio($biblionumber);

if ( not defined $record ) {
    # biblionumber invalid -> report and exit
    $template->param( unknownbiblionumber => 1,
                      biblionumber => $biblionumber );
    output_html_with_http_headers $query, $cookie, $template->output;
    exit;
}

if($query->cookie("holdfor")){ 
    my $holdfor_patron = GetMember('borrowernumber' => $query->cookie("holdfor"));
    $template->param(
        holdfor => $query->cookie("holdfor"),
        holdfor_surname => $holdfor_patron->{'surname'},
        holdfor_firstname => $holdfor_patron->{'firstname'},
        holdfor_cardnumber => $holdfor_patron->{'cardnumber'},
    );
}

my $fw           = GetFrameworkCode($biblionumber);
my $showallitems = $query->param('showallitems');
my $marcflavour  = C4::Context->preference("marcflavour");

# XSLT processing of some stuff
my $xslfile = C4::Context->preference('XSLTDetailsDisplay');
my $lang   = $xslfile ? C4::Languages::getlanguage()  : undef;
my $sysxml = $xslfile ? C4::XSLT::get_xslt_sysprefs() : undef;

if ( $xslfile ) {
    $template->param(
        XSLTDetailsDisplay => '1',
        XSLTBloc => XSLTParse4Display(
                        $biblionumber, $record, "XSLTDetailsDisplay",
                        1, undef, $sysxml, $xslfile, $lang
                    )
    );
}

$template->param( 'SpineLabelShowPrintOnBibDetails' => C4::Context->preference("SpineLabelShowPrintOnBibDetails") );
$template->param( ocoins => GetCOinSBiblio($record) );

# 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);

$template->param(
    normalized_upc => $upc,
    normalized_ean => $ean,
    normalized_oclc => $oclc,
    normalized_isbn => $isbn,
);

my $marcnotesarray   = GetMarcNotes( $record, $marcflavour );
my $marcisbnsarray   = GetMarcISBN( $record, $marcflavour );
my $marcauthorsarray = GetMarcAuthors( $record, $marcflavour );
my $marcsubjctsarray = GetMarcSubjects( $record, $marcflavour );
my $marcseriesarray  = GetMarcSeries($record,$marcflavour);
my $marcurlsarray    = GetMarcUrls    ($record,$marcflavour);
my $marchostsarray  = GetMarcHosts($record,$marcflavour);
my $subtitle         = GetRecordValue('subtitle', $record, $fw);

# Get Branches, Itemtypes and Locations
my $itemtypes = GetItemTypes();
my $dbh = C4::Context->dbh;

my @all_items = GetItemsInfo( $biblionumber );
my @items;
my $patron = Koha::Patrons->find( $borrowernumber );
for my $itm (@all_items) {
    push @items, $itm unless ( $itm->{itemlost} && $patron->category->hidelostitems && !$showallitems);
}

# flag indicating existence of at least one item linked via a host record
my $hostrecords;
# adding items linked via host biblios
my @hostitems = GetHostItemsInfo($record);
if (@hostitems){
	$hostrecords =1;
	push (@items,@hostitems);
}

my $dat = &GetBiblioData($biblionumber);

#coping with subscriptions
my $subscriptionsnumber = CountSubscriptionFromBiblionumber($biblionumber);
my @subscriptions       = SearchSubscriptions({ biblionumber => $biblionumber, orderby => 'title' });
my @subs;

foreach my $subscription (@subscriptions) {
    my %cell;
	my $serials_to_display;
    $cell{subscriptionid}    = $subscription->{subscriptionid};
    $cell{subscriptionnotes} = $subscription->{internalnotes};
    $cell{missinglist}       = $subscription->{missinglist};
    $cell{librariannote}     = $subscription->{librariannote};
    $cell{branchcode}        = $subscription->{branchcode};
    $cell{hasalert}          = $subscription->{hasalert};
    $cell{callnumber}        = $subscription->{callnumber};
    $cell{closed}            = $subscription->{closed};
    #get the three latest serials.
	$serials_to_display = $subscription->{staffdisplaycount};
	$serials_to_display = C4::Context->preference('StaffSerialIssueDisplayCount') unless $serials_to_display;
	$cell{staffdisplaycount} = $serials_to_display;
    $cell{latestserials} =
      GetLatestSerials( $subscription->{subscriptionid}, $serials_to_display );
    push @subs, \%cell;
}


# Get acquisition details
if ( C4::Context->preference('AcquisitionDetails') ) {
    my $orders = C4::Acquisition::GetHistory( biblionumber => $biblionumber, get_canceled_order => 1 );
    $template->param(
        orders => $orders,
    );
}

if ( defined $dat->{'itemtype'} ) {
    $dat->{imageurl} = getitemtypeimagelocation( 'intranet', $itemtypes->{ $dat->{itemtype} }{imageurl} );
}

$dat->{'count'} = scalar @all_items + @hostitems;
$dat->{'showncount'} = scalar @items + @hostitems;
$dat->{'hiddencount'} = scalar @all_items + @hostitems - scalar @items;

my $shelflocations =
  { map { $_->{authorised_value} => $_->{lib} } Koha::AuthorisedValues->get_descriptions_by_koha_field( { frameworkcode => $fw, kohafield => 'items.location' } ) };
my $collections =
  { map { $_->{authorised_value} => $_->{lib} } Koha::AuthorisedValues->get_descriptions_by_koha_field( { frameworkcode => $fw, kohafield => 'items.ccode' } ) };
my $copynumbers =
  { map { $_->{authorised_value} => $_->{lib} } Koha::AuthorisedValues->get_descriptions_by_koha_field( { frameworkcode => $fw, kohafield => 'items.copynumber' } ) };
my (@itemloop, @otheritemloop, %itemfields);
my $norequests = 1;

my $mss = Koha::MarcSubfieldStructures->search({ frameworkcode => $fw, kohafield => 'items.itemlost', authorised_value => { not => undef } });
if ( $mss->count ) {
    $template->param( itemlostloop => GetAuthorisedValues( $mss->next->authorised_value ) );
}
$mss = Koha::MarcSubfieldStructures->search({ frameworkcode => $fw, kohafield => 'items.damaged', authorised_value => { not => undef } });
if ( $mss->count ) {
    $template->param( itemdamagedloop => GetAuthorisedValues( $mss->next->authorised_value ) );
}

$mss = Koha::MarcSubfieldStructures->search({ frameworkcode => $fw, kohafield => 'items.materials', authorised_value => { not => undef } });
my %materials_map;
if ($mss->count) {
    my $materials_authvals = GetAuthorisedValues($mss->next->authorised_value);
    if ($materials_authvals) {
        foreach my $value (@$materials_authvals) {
            $materials_map{$value->{authorised_value}} = $value->{lib};
        }
    }
}

my $analytics_flag;
my $materials_flag; # set this if the items have anything in the materials field
my $currentbranch = C4::Context->userenv ? C4::Context->userenv->{branch} : undef;
if ($currentbranch and C4::Context->preference('SeparateHoldings')) {
    $template->param(SeparateHoldings => 1);
}
my $separatebranch = C4::Context->preference('SeparateHoldingsBranch') || 'homebranch';
foreach my $item (@items) {
    my $itembranchcode = $item->{$separatebranch};

    # can place holds defaults to yes
    $norequests = 0 unless ( ( $item->{'notforloan'} > 0 ) || ( $item->{'itemnotforloan'} > 0 ) );

    $item->{imageurl} = defined $item->{itype} ? getitemtypeimagelocation('intranet', $itemtypes->{ $item->{itype} }{imageurl})
                                               : '';

    $item->{datedue} = format_sqldatetime($item->{datedue});

    #get shelf location and collection code description if they are authorised value.
    # same thing for copy number
    my $shelfcode = $item->{'location'};
    $item->{'location'} = $shelflocations->{$shelfcode} if ( defined( $shelfcode ) && defined($shelflocations) && exists( $shelflocations->{$shelfcode} ) );
    my $ccode = $item->{'ccode'};
    $item->{'ccode'} = $collections->{$ccode} if ( defined( $ccode ) && defined($collections) && exists( $collections->{$ccode} ) );
    my $copynumber = $item->{'copynumber'};
    $item->{'copynumber'} = $copynumbers->{$copynumber} if ( defined($copynumber) && defined($copynumbers) && exists( $copynumbers->{$copynumber} ) );
    foreach (qw(ccode enumchron copynumber stocknumber itemnotes itemnotes_nonpublic uri)) {
        $itemfields{$_} = 1 if ( $item->{$_} );
    }

    # checking for holds
    my ($reservedate,$reservedfor,$expectedAt,undef,$wait) = GetReservesFromItemnumber($item->{itemnumber});
    my $ItemBorrowerReserveInfo = C4::Members::GetMember( borrowernumber => $reservedfor);
    
    if (C4::Context->preference('HidePatronName')){
	$item->{'hidepatronname'} = 1;
    }

    if ( defined $reservedate ) {
        $item->{backgroundcolor} = 'reserved';
        $item->{reservedate}     = $reservedate;
        $item->{ReservedForBorrowernumber}     = $reservedfor;
        $item->{ReservedForSurname}     = $ItemBorrowerReserveInfo->{'surname'};
        $item->{ReservedForFirstname}   = $ItemBorrowerReserveInfo->{'firstname'};
        $item->{ExpectedAtLibrary}      = $expectedAt;
        $item->{Reservedcardnumber}             = $ItemBorrowerReserveInfo->{'cardnumber'};
        # Check waiting status
        $item->{waitingdate} = $wait;
    }


	# Check the transit status
    my ( $transfertwhen, $transfertfrom, $transfertto ) = GetTransfers($item->{itemnumber});
    if ( defined( $transfertwhen ) && ( $transfertwhen ne '' ) ) {
        $item->{transfertwhen} = $transfertwhen;
        $item->{transfertfrom} = $transfertfrom;
        $item->{transfertto}   = $transfertto;
        $item->{nocancel} = 1;
    }

    foreach my $f (qw( itemnotes )) {
        if ($item->{$f}) {
            $item->{$f} =~ s|\n|<br />|g;
            $itemfields{$f} = 1;
        }
    }

    #item has a host number if its biblio number does not match the current bib

    if ($item->{biblionumber} ne $biblionumber){
        $item->{hostbiblionumber} = $item->{biblionumber};
	$item->{hosttitle} = GetBiblioData($item->{biblionumber})->{title};
    }
	
    #count if item is used in analytical bibliorecords
    my $countanalytics= GetAnalyticsCount($item->{itemnumber});
    if ($countanalytics > 0){
        $analytics_flag=1;
        $item->{countanalytics} = $countanalytics;
    }

    if (defined($item->{'materials'}) && $item->{'materials'} =~ /\S/){
        $materials_flag = 1;
        if (defined $materials_map{ $item->{materials} }) {
            $item->{materials} = $materials_map{ $item->{materials} };
        }
    }

    if ( C4::Context->preference('UseCourseReserves') ) {
        $item->{'course_reserves'} = GetItemCourseReservesInfo( itemnumber => $item->{'itemnumber'} );
    }

    if ( C4::Context->preference('IndependentBranches') ) {
        my $userenv = C4::Context->userenv();
        if ( not C4::Context->IsSuperLibrarian()
            and $userenv->{branch} ne $item->{homebranch} ) {
            $item->{cannot_be_edited} = 1;
        }
    }

    if ($currentbranch and $currentbranch ne "NO_LIBRARY_SET"
    and C4::Context->preference('SeparateHoldings')) {
        if ($itembranchcode and $itembranchcode eq $currentbranch) {
            push @itemloop, $item;
        } else {
            push @otheritemloop, $item;
        }
    } else {
        push @itemloop, $item;
    }
}

# Display only one tab if one items list is empty
if (scalar(@itemloop) == 0 || scalar(@otheritemloop) == 0) {
    $template->param(SeparateHoldings => 0);
    if (scalar(@itemloop) == 0) {
        @itemloop = @otheritemloop;
    }
}

$template->param( norequests => $norequests );
$template->param(
	MARCNOTES   => $marcnotesarray,
	MARCSUBJCTS => $marcsubjctsarray,
	MARCAUTHORS => $marcauthorsarray,
	MARCSERIES  => $marcseriesarray,
	MARCURLS => $marcurlsarray,
    MARCISBNS => $marcisbnsarray,
	MARCHOSTS => $marchostsarray,
	subtitle    => $subtitle,
	itemdata_ccode      => $itemfields{ccode},
	itemdata_enumchron  => $itemfields{enumchron},
	itemdata_uri        => $itemfields{uri},
	itemdata_copynumber => $itemfields{copynumber},
	itemdata_stocknumber => $itemfields{stocknumber},
	volinfo				=> $itemfields{enumchron},
        itemdata_itemnotes  => $itemfields{itemnotes},
        itemdata_nonpublicnotes => $itemfields{itemnotes_nonpublic},
	z3950_search_params	=> C4::Search::z3950_search_args($dat),
        hostrecords         => $hostrecords,
	analytics_flag	=> $analytics_flag,
	C4::Search::enabled_staff_search_views,
        materials       => $materials_flag,
);

if (C4::Context->preference("AlternateHoldingsField") && scalar @items == 0) {
    my $fieldspec = C4::Context->preference("AlternateHoldingsField");
    my $subfields = substr $fieldspec, 3;
    my $holdingsep = C4::Context->preference("AlternateHoldingsSeparator") || ' ';
    my @alternateholdingsinfo = ();
    my @holdingsfields = $record->field(substr $fieldspec, 0, 3);

    for my $field (@holdingsfields) {
        my %holding = ( holding => '' );
        my $havesubfield = 0;
        for my $subfield ($field->subfields()) {
            if ((index $subfields, $$subfield[0]) >= 0) {
                $holding{'holding'} .= $holdingsep if (length $holding{'holding'} > 0);
                $holding{'holding'} .= $$subfield[1];
                $havesubfield++;
            }
        }
        if ($havesubfield) {
            push(@alternateholdingsinfo, \%holding);
        }
    }

    $template->param(
        ALTERNATEHOLDINGS   => \@alternateholdingsinfo,
        );
}

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

# does not work: my %views_enabled = map { $_ => 1 } $template->query(loop => 'EnableViews');
# method query not found?!?!
$template->param( AmazonTld => get_amazon_tld() ) if ( C4::Context->preference("AmazonCoverImages"));
$template->param(
    itemloop        => \@itemloop,
    otheritemloop   => \@otheritemloop,
    biblionumber        => $biblionumber,
    ($analyze? 'analyze':'detailview') =>1,
    subscriptions       => \@subs,
    subscriptionsnumber => $subscriptionsnumber,
    subscriptiontitle   => $dat->{title},
    searchid            => scalar $query->param('searchid'),
);

# $debug and $template->param(debug_display => 1);

# Lists

if (C4::Context->preference("virtualshelves") ) {
    my $shelves = Koha::Virtualshelves->search(
        {
            biblionumber => $biblionumber,
            category => 2,
        },
        {
            join => 'virtualshelfcontents',
        }
    );
    $template->param( 'shelves' => $shelves );
}

# XISBN Stuff
if (C4::Context->preference("FRBRizeEditions")==1) {
    eval {
        $template->param(
            XISBNS => get_xisbns($isbn)
        );
    };
    if ($@) { warn "XISBN Failed $@"; }
}

if ( C4::Context->preference("LocalCoverImages") == 1 ) {
    my @images = ListImagesForBiblio($biblionumber);
    $template->{VARS}->{localimages} = \@images;
}

# HTML5 Media
if ( (C4::Context->preference("HTML5MediaEnabled") eq 'both') or (C4::Context->preference("HTML5MediaEnabled") eq 'staff') ) {
    $template->param( C4::HTML5Media->gethtml5media($record));
}

# Displaying tags

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

#we only need to pass the number of holds to the template
my $holds = C4::Reserves::GetReservesFromBiblionumber({ biblionumber => $biblionumber, all_dates => 1 });
$template->param( holdcount => scalar ( @$holds ) );

my $StaffDetailItemSelection = C4::Context->preference('StaffDetailItemSelection');
if ($StaffDetailItemSelection) {
    # Only enable item selection if user can execute at least one action
    if (
        $flags->{superlibrarian}
        || (
            ref $flags->{tools} eq 'HASH' && (
                $flags->{tools}->{items_batchmod}       # Modify selected items
                || $flags->{tools}->{items_batchdel}    # Delete selected items
            )
        )
        || ( ref $flags->{tools} eq '' && $flags->{tools} )
      )
    {
        $template->param(
            StaffDetailItemSelection => $StaffDetailItemSelection );
    }
}

my @allorders_using_biblio = GetOrdersByBiblionumber ($biblionumber);
my @deletedorders_using_biblio;
my @orders_using_biblio;
my @baskets_orders;
my @baskets_deletedorders;

foreach my $myorder (@allorders_using_biblio) {
    my $basket = $myorder->{'basketno'};
    if ((defined $myorder->{'datecancellationprinted'}) and  ($myorder->{'datecancellationprinted'} ne '0000-00-00') ){
        push @deletedorders_using_biblio, $myorder;
        unless (grep(/^$basket$/, @baskets_deletedorders)){
            push @baskets_deletedorders,$myorder->{'basketno'};
        }
    }
    else {
        push @orders_using_biblio, $myorder;
        unless (grep(/^$basket$/, @baskets_orders)){
            push @baskets_orders,$myorder->{'basketno'};
            }
    }
}

my $count_orders_using_biblio = scalar @orders_using_biblio ;
$template->param (countorders => $count_orders_using_biblio);

my $count_deletedorders_using_biblio = scalar @deletedorders_using_biblio ;
$template->param (countdeletedorders => $count_deletedorders_using_biblio);

$template->param (basketsorders => \@baskets_orders);
$template->param (basketsdeletedorders => \@baskets_deletedorders);

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