package C4::Biblio;

# Copyright 2000-2002 Katipo Communications
# Copyright 2010 BibLibre
# Copyright 2011 Equinox Software, Inc.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

use strict;
use warnings;
use Carp;

# use utf8;
use MARC::Record;
use MARC::File::USMARC;
use MARC::File::XML;
use POSIX qw(strftime);
use Module::Load::Conditional qw(can_load);

use C4::Koha;
use C4::Dates qw/format_date/;
use C4::Log;    # logaction
use C4::Budgets;
use C4::ClassSource;
use C4::Charset;
use C4::Linker;
use C4::OAI::Sets;

use Koha::Cache;

use vars qw($VERSION @ISA @EXPORT);

BEGIN {
    $VERSION = 3.07.00.049;

    require Exporter;
    @ISA = qw( Exporter );

    # to add biblios
    # EXPORTED FUNCTIONS.
    push @EXPORT, qw(
      &AddBiblio
    );

    # to get something
    push @EXPORT, qw(
      &GetBiblio
      &GetBiblioData
      &GetBiblioItemData
      &GetBiblioItemInfosOf
      &GetBiblioItemByBiblioNumber
      &GetBiblioFromItemNumber
      &GetBiblionumberFromItemnumber

      &GetRecordValue
      &GetFieldMapping
      &SetFieldMapping
      &DeleteFieldMapping

      &GetISBDView

      &GetMarcControlnumber
      &GetMarcNotes
      &GetMarcISBN
      &GetMarcISSN
      &GetMarcSubjects
      &GetMarcBiblio
      &GetMarcAuthors
      &GetMarcSeries
      &GetMarcHosts
      GetMarcUrls
      &GetUsedMarcStructure
      &GetXmlBiblio
      &GetCOinSBiblio
      &GetMarcPrice
      &MungeMarcPrice
      &GetMarcQuantity

      &GetAuthorisedValueDesc
      &GetMarcStructure
      &GetMarcFromKohaField
      &GetMarcSubfieldStructureFromKohaField
      &GetFrameworkCode
      &TransformKohaToMarc
      &PrepHostMarcField

      &CountItemsIssued
      &CountBiblioInOrders
      &GetSubscriptionsId
      &GetHolds
    );

    # To modify something
    push @EXPORT, qw(
      &ModBiblio
      &ModBiblioframework
      &ModZebra
      &UpdateTotalIssues
      &RemoveAllNsb
    );

    # To delete something
    push @EXPORT, qw(
      &DelBiblio
    );

    # To link headings in a bib record
    # to authority records.
    push @EXPORT, qw(
      &BiblioAutoLink
      &LinkBibHeadingsToAuthorities
    );

    # Internal functions
    # those functions are exported but should not be used
    # they are usefull is few circumstances, so are exported.
    # but don't use them unless you're a core developer ;-)
    push @EXPORT, qw(
      &ModBiblioMarc
    );

    # Others functions
    push @EXPORT, qw(
      &TransformMarcToKoha
      &TransformHtmlToMarc
      &TransformHtmlToXml
      prepare_host_field
    );
}

=head1 NAME

C4::Biblio - cataloging management functions

=head1 DESCRIPTION

Biblio.pm contains functions for managing storage and editing of bibliographic data within Koha. Most of the functions in this module are used for cataloging records: adding, editing, or removing biblios, biblioitems, or items. Koha's stores bibliographic information in three places:

=over 4

=item 1. in the biblio,biblioitems,items, etc tables, which are limited to a one-to-one mapping to underlying MARC data

=item 2. as raw MARC in the Zebra index and storage engine

=item 3. as raw MARC the biblioitems.marc and biblioitems.marcxml

=back

In the 3.0 version of Koha, the authoritative record-level information is in biblioitems.marcxml

Because the data isn't completely normalized there's a chance for information to get out of sync. The design choice to go with a un-normalized schema was driven by performance and stability concerns. However, if this occur, it can be considered as a bug : The API is (or should be) complete & the only entry point for all biblio/items managements.

=over 4

=item 1. Compared with MySQL, Zebra is slow to update an index for small data changes -- especially for proc-intensive operations like circulation

=item 2. Zebra's index has been known to crash and a backup of the data is necessary to rebuild it in such cases

=back

Because of this design choice, the process of managing storage and editing is a bit convoluted. Historically, Biblio.pm's grown to an unmanagable size and as a result we have several types of functions currently:

=over 4

=item 1. Add*/Mod*/Del*/ - high-level external functions suitable for being called from external scripts to manage the collection

=item 2. _koha_* - low-level internal functions for managing the koha tables

=item 3. Marc management function : as the MARC record is stored in biblioitems.marc(xml), some subs dedicated to it's management are in this package. They should be used only internally by Biblio.pm, the only official entry points being AddBiblio, AddItem, ModBiblio, ModItem.

=item 4. Zebra functions used to update the Zebra index

=item 5. internal helper functions such as char_decode, checkitems, etc. Some of these probably belong in Koha.pm

=back

The MARC record (in biblioitems.marcxml) contains the complete marc record, including items. It also contains the biblionumber. That is the reason why it is not stored directly by AddBiblio, with all other fields . To save a biblio, we need to :

=over 4

=item 1. save datas in biblio and biblioitems table, that gives us a biblionumber and a biblioitemnumber

=item 2. add the biblionumber and biblioitemnumber into the MARC records

=item 3. save the marc record

=back

When dealing with items, we must :

=over 4

=item 1. save the item in items table, that gives us an itemnumber

=item 2. add the itemnumber to the item MARC field

=item 3. overwrite the MARC record (with the added item) into biblioitems.marc(xml)

When modifying a biblio or an item, the behaviour is quite similar.

=back

=head1 EXPORTED FUNCTIONS

=head2 AddBiblio

  ($biblionumber,$biblioitemnumber) = AddBiblio($record,$frameworkcode);

Exported function (core API) for adding a new biblio to koha.

The first argument is a C<MARC::Record> object containing the
bib to add, while the second argument is the desired MARC
framework code.

This function also accepts a third, optional argument: a hashref
to additional options.  The only defined option is C<defer_marc_save>,
which if present and mapped to a true value, causes C<AddBiblio>
to omit the call to save the MARC in C<bibilioitems.marc>
and C<biblioitems.marcxml>  This option is provided B<only>
for the use of scripts such as C<bulkmarcimport.pl> that may need
to do some manipulation of the MARC record for item parsing before
saving it and which cannot afford the performance hit of saving
the MARC record twice.  Consequently, do not use that option
unless you can guarantee that C<ModBiblioMarc> will be called.

=cut

sub AddBiblio {
    my $record          = shift;
    my $frameworkcode   = shift;
    my $options         = @_ ? shift : undef;
    my $defer_marc_save = 0;
    if (!$record) {
        carp('AddBiblio called with undefined record');
        return;
    }
    if ( defined $options and exists $options->{'defer_marc_save'} and $options->{'defer_marc_save'} ) {
        $defer_marc_save = 1;
    }

    my ( $biblionumber, $biblioitemnumber, $error );
    my $dbh = C4::Context->dbh;

    # transform the data into koha-table style data
    SetUTF8Flag($record);
    my $olddata = TransformMarcToKoha( $dbh, $record, $frameworkcode );
    ( $biblionumber, $error ) = _koha_add_biblio( $dbh, $olddata, $frameworkcode );
    $olddata->{'biblionumber'} = $biblionumber;
    ( $biblioitemnumber, $error ) = _koha_add_biblioitem( $dbh, $olddata );

    _koha_marc_update_bib_ids( $record, $frameworkcode, $biblionumber, $biblioitemnumber );

    # update MARC subfield that stores biblioitems.cn_sort
    _koha_marc_update_biblioitem_cn_sort( $record, $olddata, $frameworkcode );

    # now add the record
    ModBiblioMarc( $record, $biblionumber, $frameworkcode ) unless $defer_marc_save;

    # update OAI-PMH sets
    if(C4::Context->preference("OAI-PMH:AutoUpdateSets")) {
        C4::OAI::Sets::UpdateOAISetsBiblio($biblionumber, $record);
    }

    logaction( "CATALOGUING", "ADD", $biblionumber, "biblio" ) if C4::Context->preference("CataloguingLog");
    return ( $biblionumber, $biblioitemnumber );
}

=head2 ModBiblio

  ModBiblio( $record,$biblionumber,$frameworkcode);

Replace an existing bib record identified by C<$biblionumber>
with one supplied by the MARC::Record object C<$record>.  The embedded
item, biblioitem, and biblionumber fields from the previous
version of the bib record replace any such fields of those tags that
are present in C<$record>.  Consequently, ModBiblio() is not
to be used to try to modify item records.

C<$frameworkcode> specifies the MARC framework to use
when storing the modified bib record; among other things,
this controls how MARC fields get mapped to display columns
in the C<biblio> and C<biblioitems> tables, as well as
which fields are used to store embedded item, biblioitem,
and biblionumber data for indexing.

Returns 1 on success 0 on failure

=cut

sub ModBiblio {
    my ( $record, $biblionumber, $frameworkcode ) = @_;
    if (!$record) {
        carp 'No record passed to ModBiblio';
        return 0;
    }

    if ( C4::Context->preference("CataloguingLog") ) {
        my $newrecord = GetMarcBiblio($biblionumber);
        logaction( "CATALOGUING", "MODIFY", $biblionumber, "biblio BEFORE=>" . $newrecord->as_formatted );
    }

    # Cleaning up invalid fields must be done early or SetUTF8Flag is liable to
    # throw an exception which probably won't be handled.
    foreach my $field ($record->fields()) {
        if (! $field->is_control_field()) {
            if (scalar($field->subfields()) == 0 || (scalar($field->subfields()) == 1 && $field->subfield('9'))) {
                $record->delete_field($field);
            }
        }
    }

    SetUTF8Flag($record);
    my $dbh = C4::Context->dbh;

    $frameworkcode = "" if !$frameworkcode || $frameworkcode eq "Default"; # XXX

    _strip_item_fields($record, $frameworkcode);

    # update biblionumber and biblioitemnumber in MARC
    # FIXME - this is assuming a 1 to 1 relationship between
    # biblios and biblioitems
    my $sth = $dbh->prepare("select biblioitemnumber from biblioitems where biblionumber=?");
    $sth->execute($biblionumber);
    my ($biblioitemnumber) = $sth->fetchrow;
    $sth->finish();
    _koha_marc_update_bib_ids( $record, $frameworkcode, $biblionumber, $biblioitemnumber );

    # load the koha-table data object
    my $oldbiblio = TransformMarcToKoha( $dbh, $record, $frameworkcode );

    # update MARC subfield that stores biblioitems.cn_sort
    _koha_marc_update_biblioitem_cn_sort( $record, $oldbiblio, $frameworkcode );

    # update the MARC record (that now contains biblio and items) with the new record data
    &ModBiblioMarc( $record, $biblionumber, $frameworkcode );

    # modify the other koha tables
    _koha_modify_biblio( $dbh, $oldbiblio, $frameworkcode );
    _koha_modify_biblioitem_nonmarc( $dbh, $oldbiblio );

    # update OAI-PMH sets
    if(C4::Context->preference("OAI-PMH:AutoUpdateSets")) {
        C4::OAI::Sets::UpdateOAISetsBiblio($biblionumber, $record);
    }

    return 1;
}

=head2 _strip_item_fields

  _strip_item_fields($record, $frameworkcode)

Utility routine to remove item tags from a
MARC bib.

=cut

sub _strip_item_fields {
    my $record = shift;
    my $frameworkcode = shift;
    # get the items before and append them to the biblio before updating the record, atm we just have the biblio
    my ( $itemtag, $itemsubfield ) = GetMarcFromKohaField( "items.itemnumber", $frameworkcode );

    # delete any item fields from incoming record to avoid
    # duplication or incorrect data - use AddItem() or ModItem()
    # to change items
    foreach my $field ( $record->field($itemtag) ) {
        $record->delete_field($field);
    }
}

=head2 ModBiblioframework

   ModBiblioframework($biblionumber,$frameworkcode);

Exported function to modify a biblio framework

=cut

sub ModBiblioframework {
    my ( $biblionumber, $frameworkcode ) = @_;
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare( "UPDATE biblio SET frameworkcode=? WHERE biblionumber=?" );
    $sth->execute( $frameworkcode, $biblionumber );
    return 1;
}

=head2 DelBiblio

  my $error = &DelBiblio($biblionumber);

Exported function (core API) for deleting a biblio in koha.
Deletes biblio record from Zebra and Koha tables (biblio & biblioitems)
Also backs it up to deleted* tables.
Checks to make sure that the biblio has no items attached.
return:
C<$error> : undef unless an error occurs

=cut

sub DelBiblio {
    my ($biblionumber) = @_;
    my $dbh = C4::Context->dbh;
    my $error;    # for error handling

    # First make sure this biblio has no items attached
    my $sth = $dbh->prepare("SELECT itemnumber FROM items WHERE biblionumber=?");
    $sth->execute($biblionumber);
    if ( my $itemnumber = $sth->fetchrow ) {

        # Fix this to use a status the template can understand
        $error .= "This Biblio has items attached, please delete them first before deleting this biblio ";
    }

    return $error if $error;

    # We delete attached subscriptions
    require C4::Serials;
    my $subscriptions = C4::Serials::GetFullSubscriptionsFromBiblionumber($biblionumber);
    foreach my $subscription (@$subscriptions) {
        C4::Serials::DelSubscription( $subscription->{subscriptionid} );
    }

    # We delete any existing holds
    require C4::Reserves;
    my $reserves = C4::Reserves::GetReservesFromBiblionumber({ biblionumber => $biblionumber });
    foreach my $res ( @$reserves ) {
        C4::Reserves::CancelReserve({ reserve_id => $res->{'reserve_id'} });
    }

    # Delete in Zebra. Be careful NOT to move this line after _koha_delete_biblio
    # for at least 2 reasons :
    # - if something goes wrong, the biblio may be deleted from Koha but not from zebra
    #   and we would have no way to remove it (except manually in zebra, but I bet it would be very hard to handle the problem)
    ModZebra( $biblionumber, "recordDelete", "biblioserver" );

    # delete biblioitems and items from Koha tables and save in deletedbiblioitems,deleteditems
    $sth = $dbh->prepare("SELECT biblioitemnumber FROM biblioitems WHERE biblionumber=?");
    $sth->execute($biblionumber);
    while ( my $biblioitemnumber = $sth->fetchrow ) {

        # delete this biblioitem
        $error = _koha_delete_biblioitems( $dbh, $biblioitemnumber );
        return $error if $error;
    }

    # delete biblio from Koha tables and save in deletedbiblio
    # must do this *after* _koha_delete_biblioitems, otherwise
    # delete cascade will prevent deletedbiblioitems rows
    # from being generated by _koha_delete_biblioitems
    $error = _koha_delete_biblio( $dbh, $biblionumber );

    logaction( "CATALOGUING", "DELETE", $biblionumber, "biblio" ) if C4::Context->preference("CataloguingLog");

    return;
}


=head2 BiblioAutoLink

  my $headings_linked = BiblioAutoLink($record, $frameworkcode)

Automatically links headings in a bib record to authorities.

Returns the number of headings changed

=cut

sub BiblioAutoLink {
    my $record        = shift;
    my $frameworkcode = shift;
    if (!$record) {
        carp('Undefined record passed to BiblioAutoLink');
        return 0;
    }
    my ( $num_headings_changed, %results );

    my $linker_module =
      "C4::Linker::" . ( C4::Context->preference("LinkerModule") || 'Default' );
    unless ( can_load( modules => { $linker_module => undef } ) ) {
        $linker_module = 'C4::Linker::Default';
        unless ( can_load( modules => { $linker_module => undef } ) ) {
            return 0;
        }
    }

    my $linker = $linker_module->new(
        { 'options' => C4::Context->preference("LinkerOptions") } );
    my ( $headings_changed, undef ) =
      LinkBibHeadingsToAuthorities( $linker, $record, $frameworkcode, C4::Context->preference("CatalogModuleRelink") || '' );
    # By default we probably don't want to relink things when cataloging
    return $headings_changed;
}

=head2 LinkBibHeadingsToAuthorities

  my $num_headings_changed, %results = LinkBibHeadingsToAuthorities($linker, $marc, $frameworkcode, [$allowrelink]);

Links bib headings to authority records by checking
each authority-controlled field in the C<MARC::Record>
object C<$marc>, looking for a matching authority record,
and setting the linking subfield $9 to the ID of that
authority record.  

If $allowrelink is false, existing authids will never be
replaced, regardless of the values of LinkerKeepStale and
LinkerRelink.

Returns the number of heading links changed in the
MARC record.

=cut

sub LinkBibHeadingsToAuthorities {
    my $linker        = shift;
    my $bib           = shift;
    my $frameworkcode = shift;
    my $allowrelink = shift;
    my %results;
    if (!$bib) {
        carp 'LinkBibHeadingsToAuthorities called on undefined bib record';
        return ( 0, {});
    }
    require C4::Heading;
    require C4::AuthoritiesMarc;

    $allowrelink = 1 unless defined $allowrelink;
    my $num_headings_changed = 0;
    foreach my $field ( $bib->fields() ) {
        my $heading = C4::Heading->new_from_bib_field( $field, $frameworkcode );
        next unless defined $heading;

        # check existing $9
        my $current_link = $field->subfield('9');

        if ( defined $current_link && (!$allowrelink || !C4::Context->preference('LinkerRelink')) )
        {
            $results{'linked'}->{ $heading->display_form() }++;
            next;
        }

        my ( $authid, $fuzzy ) = $linker->get_link($heading);
        if ($authid) {
            $results{ $fuzzy ? 'fuzzy' : 'linked' }
              ->{ $heading->display_form() }++;
            next if defined $current_link and $current_link == $authid;

            $field->delete_subfield( code => '9' ) if defined $current_link;
            $field->add_subfields( '9', $authid );
            $num_headings_changed++;
        }
        else {
            if ( defined $current_link
                && (!$allowrelink || C4::Context->preference('LinkerKeepStale')) )
            {
                $results{'fuzzy'}->{ $heading->display_form() }++;
            }
            elsif ( C4::Context->preference('AutoCreateAuthorities') ) {
                if ( _check_valid_auth_link( $current_link, $field ) ) {
                    $results{'linked'}->{ $heading->display_form() }++;
                }
                else {
                    my $authtypedata =
                      C4::AuthoritiesMarc::GetAuthType( $heading->auth_type() );
                    my $marcrecordauth = MARC::Record->new();
                    if ( C4::Context->preference('marcflavour') eq 'MARC21' ) {
                        $marcrecordauth->leader('     nz  a22     o  4500');
                        SetMarcUnicodeFlag( $marcrecordauth, 'MARC21' );
                    }
                    $field->delete_subfield( code => '9' )
                      if defined $current_link;
                    my $authfield =
                      MARC::Field->new( $authtypedata->{auth_tag_to_report},
                        '', '', "a" => "" . $field->subfield('a') );
                    map {
                        $authfield->add_subfields( $_->[0] => $_->[1] )
                          if ( $_->[0] =~ /[A-z]/ && $_->[0] ne "a" )
                    } $field->subfields();
                    $marcrecordauth->insert_fields_ordered($authfield);

# bug 2317: ensure new authority knows it's using UTF-8; currently
# only need to do this for MARC21, as MARC::Record->as_xml_record() handles
# automatically for UNIMARC (by not transcoding)
# FIXME: AddAuthority() instead should simply explicitly require that the MARC::Record
# use UTF-8, but as of 2008-08-05, did not want to introduce that kind
# of change to a core API just before the 3.0 release.

                    if ( C4::Context->preference('marcflavour') eq 'MARC21' ) {
                        $marcrecordauth->insert_fields_ordered(
                            MARC::Field->new(
                                '667', '', '',
                                'a' => "Machine generated authority record."
                            )
                        );
                        my $cite =
                            $bib->author() . ", "
                          . $bib->title_proper() . ", "
                          . $bib->publication_date() . " ";
                        $cite =~ s/^[\s\,]*//;
                        $cite =~ s/[\s\,]*$//;
                        $cite =
                            "Work cat.: ("
                          . C4::Context->preference('MARCOrgCode') . ")"
                          . $bib->subfield( '999', 'c' ) . ": "
                          . $cite;
                        $marcrecordauth->insert_fields_ordered(
                            MARC::Field->new( '670', '', '', 'a' => $cite ) );
                    }

           #          warn "AUTH RECORD ADDED : ".$marcrecordauth->as_formatted;

                    $authid =
                      C4::AuthoritiesMarc::AddAuthority( $marcrecordauth, '',
                        $heading->auth_type() );
                    $field->add_subfields( '9', $authid );
                    $num_headings_changed++;
                    $linker->update_cache($heading, $authid);
                    $results{'added'}->{ $heading->display_form() }++;
                }
            }
            elsif ( defined $current_link ) {
                if ( _check_valid_auth_link( $current_link, $field ) ) {
                    $results{'linked'}->{ $heading->display_form() }++;
                }
                else {
                    $field->delete_subfield( code => '9' );
                    $num_headings_changed++;
                    $results{'unlinked'}->{ $heading->display_form() }++;
                }
            }
            else {
                $results{'unlinked'}->{ $heading->display_form() }++;
            }
        }

    }
    return $num_headings_changed, \%results;
}

=head2 _check_valid_auth_link

    if ( _check_valid_auth_link($authid, $field) ) {
        ...
    }

Check whether the specified heading-auth link is valid without reference
to Zebra. Ideally this code would be in C4::Heading, but that won't be
possible until we have de-cycled C4::AuthoritiesMarc, so this is the
safest place.

=cut

sub _check_valid_auth_link {
    my ( $authid, $field ) = @_;

    require C4::AuthoritiesMarc;

    my $authorized_heading =
      C4::AuthoritiesMarc::GetAuthorizedHeading( { 'authid' => $authid } ) || '';

   return ($field->as_string('abcdefghijklmnopqrstuvwxyz') eq $authorized_heading);
}

=head2 GetRecordValue

  my $values = GetRecordValue($field, $record, $frameworkcode);

Get MARC fields from a keyword defined in fieldmapping table.

=cut

sub GetRecordValue {
    my ( $field, $record, $frameworkcode ) = @_;

    if (!$record) {
        carp 'GetRecordValue called with undefined record';
        return;
    }
    my $dbh = C4::Context->dbh;

    my $sth = $dbh->prepare('SELECT fieldcode, subfieldcode FROM fieldmapping WHERE frameworkcode = ? AND field = ?');
    $sth->execute( $frameworkcode, $field );

    my @result = ();

    while ( my $row = $sth->fetchrow_hashref ) {
        foreach my $field ( $record->field( $row->{fieldcode} ) ) {
            if ( ( $row->{subfieldcode} ne "" && $field->subfield( $row->{subfieldcode} ) ) ) {
                foreach my $subfield ( $field->subfield( $row->{subfieldcode} ) ) {
                    push @result, { 'subfield' => $subfield };
                }

            } elsif ( $row->{subfieldcode} eq "" ) {
                push @result, { 'subfield' => $field->as_string() };
            }
        }
    }

    return \@result;
}

=head2 SetFieldMapping

  SetFieldMapping($framework, $field, $fieldcode, $subfieldcode);

Set a Field to MARC mapping value, if it already exists we don't add a new one.

=cut

sub SetFieldMapping {
    my ( $framework, $field, $fieldcode, $subfieldcode ) = @_;
    my $dbh = C4::Context->dbh;

    my $sth = $dbh->prepare('SELECT * FROM fieldmapping WHERE fieldcode = ? AND subfieldcode = ? AND frameworkcode = ? AND field = ?');
    $sth->execute( $fieldcode, $subfieldcode, $framework, $field );
    if ( not $sth->fetchrow_hashref ) {
        my @args;
        $sth = $dbh->prepare('INSERT INTO fieldmapping (fieldcode, subfieldcode, frameworkcode, field) VALUES(?,?,?,?)');

        $sth->execute( $fieldcode, $subfieldcode, $framework, $field );
    }
}

=head2 DeleteFieldMapping

  DeleteFieldMapping($id);

Delete a field mapping from an $id.

=cut

sub DeleteFieldMapping {
    my ($id) = @_;
    my $dbh = C4::Context->dbh;

    my $sth = $dbh->prepare('DELETE FROM fieldmapping WHERE id = ?');
    $sth->execute($id);
}

=head2 GetFieldMapping

  GetFieldMapping($frameworkcode);

Get all field mappings for a specified frameworkcode

=cut

sub GetFieldMapping {
    my ($framework) = @_;
    my $dbh = C4::Context->dbh;

    my $sth = $dbh->prepare('SELECT * FROM fieldmapping where frameworkcode = ?');
    $sth->execute($framework);

    my @return;
    while ( my $row = $sth->fetchrow_hashref ) {
        push @return, $row;
    }
    return \@return;
}

=head2 GetBiblioData

  $data = &GetBiblioData($biblionumber);

Returns information about the book with the given biblionumber.
C<&GetBiblioData> returns a reference-to-hash. The keys are the fields in
the C<biblio> and C<biblioitems> tables in the
Koha database.

In addition, C<$data-E<gt>{subject}> is the list of the book's
subjects, separated by C<" , "> (space, comma, space).
If there are multiple biblioitems with the given biblionumber, only
the first one is considered.

=cut

sub GetBiblioData {
    my ($bibnum) = @_;
    my $dbh = C4::Context->dbh;

    my $query = " SELECT * , biblioitems.notes AS bnotes, itemtypes.notforloan as bi_notforloan, biblio.notes
            FROM biblio
            LEFT JOIN biblioitems ON biblio.biblionumber = biblioitems.biblionumber
            LEFT JOIN itemtypes ON biblioitems.itemtype = itemtypes.itemtype
            WHERE biblio.biblionumber = ?";

    my $sth = $dbh->prepare($query);
    $sth->execute($bibnum);
    my $data;
    $data = $sth->fetchrow_hashref;
    $sth->finish;

    return ($data);
}    # sub GetBiblioData

=head2 &GetBiblioItemData

  $itemdata = &GetBiblioItemData($biblioitemnumber);

Looks up the biblioitem with the given biblioitemnumber. Returns a
reference-to-hash. The keys are the fields from the C<biblio>,
C<biblioitems>, and C<itemtypes> tables in the Koha database, except
that C<biblioitems.notes> is given as C<$itemdata-E<gt>{bnotes}>.

=cut

#'
sub GetBiblioItemData {
    my ($biblioitemnumber) = @_;
    my $dbh                = C4::Context->dbh;
    my $query              = "SELECT *,biblioitems.notes AS bnotes
        FROM biblio LEFT JOIN biblioitems on biblio.biblionumber=biblioitems.biblionumber ";
    unless ( C4::Context->preference('item-level_itypes') ) {
        $query .= "LEFT JOIN itemtypes on biblioitems.itemtype=itemtypes.itemtype ";
    }
    $query .= " WHERE biblioitemnumber = ? ";
    my $sth = $dbh->prepare($query);
    my $data;
    $sth->execute($biblioitemnumber);
    $data = $sth->fetchrow_hashref;
    $sth->finish;
    return ($data);
}    # sub &GetBiblioItemData

=head2 GetBiblioItemByBiblioNumber

NOTE : This function has been copy/paste from C4/Biblio.pm from head before zebra integration.

=cut

sub GetBiblioItemByBiblioNumber {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $sth            = $dbh->prepare("Select * FROM biblioitems WHERE biblionumber = ?");
    my $count          = 0;
    my @results;

    $sth->execute($biblionumber);

    while ( my $data = $sth->fetchrow_hashref ) {
        push @results, $data;
    }

    $sth->finish;
    return @results;
}

=head2 GetBiblionumberFromItemnumber


=cut

sub GetBiblionumberFromItemnumber {
    my ($itemnumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $sth            = $dbh->prepare("Select biblionumber FROM items WHERE itemnumber = ?");

    $sth->execute($itemnumber);
    my ($result) = $sth->fetchrow;
    return ($result);
}

=head2 GetBiblioFromItemNumber

  $item = &GetBiblioFromItemNumber($itemnumber,$barcode);

Looks up the item with the given itemnumber. if undef, try the barcode.

C<&itemnodata> returns a reference-to-hash whose keys are the fields
from the C<biblio>, C<biblioitems>, and C<items> tables in the Koha
database.

=cut

#'
sub GetBiblioFromItemNumber {
    my ( $itemnumber, $barcode ) = @_;
    my $dbh = C4::Context->dbh;
    my $sth;
    if ($itemnumber) {
        $sth = $dbh->prepare(
            "SELECT * FROM items 
            LEFT JOIN biblio ON biblio.biblionumber = items.biblionumber
            LEFT JOIN biblioitems ON biblioitems.biblioitemnumber = items.biblioitemnumber
             WHERE items.itemnumber = ?"
        );
        $sth->execute($itemnumber);
    } else {
        $sth = $dbh->prepare(
            "SELECT * FROM items 
            LEFT JOIN biblio ON biblio.biblionumber = items.biblionumber
            LEFT JOIN biblioitems ON biblioitems.biblioitemnumber = items.biblioitemnumber
             WHERE items.barcode = ?"
        );
        $sth->execute($barcode);
    }
    my $data = $sth->fetchrow_hashref;
    $sth->finish;
    return ($data);
}

=head2 GetISBDView 

  $isbd = &GetISBDView($biblionumber);

Return the ISBD view which can be included in opac and intranet

=cut

sub GetISBDView {
    my ( $biblionumber, $template ) = @_;
    my $record   = GetMarcBiblio($biblionumber, 1);
    return unless defined $record;
    my $itemtype = &GetFrameworkCode($biblionumber);
    my ( $holdingbrtagf, $holdingbrtagsubf ) = &GetMarcFromKohaField( "items.holdingbranch", $itemtype );
    my $tagslib = &GetMarcStructure( 1, $itemtype );

    my $ISBD = C4::Context->preference('isbd');
    my $bloc = $ISBD;
    my $res;
    my $blocres;

    foreach my $isbdfield ( split( /#/, $bloc ) ) {

        #         $isbdfield= /(.?.?.?)/;
        $isbdfield =~ /(\d\d\d)([^\|])?\|(.*)\|(.*)\|(.*)/;
        my $fieldvalue = $1 || 0;
        my $subfvalue  = $2 || "";
        my $textbefore = $3;
        my $analysestring = $4;
        my $textafter     = $5;

        #         warn "==> $1 / $2 / $3 / $4";
        #         my $fieldvalue=substr($isbdfield,0,3);
        if ( $fieldvalue > 0 ) {
            my $hasputtextbefore = 0;
            my @fieldslist       = $record->field($fieldvalue);
            @fieldslist = sort { $a->subfield($holdingbrtagsubf) cmp $b->subfield($holdingbrtagsubf) } @fieldslist if ( $fieldvalue eq $holdingbrtagf );

            #         warn "ERROR IN ISBD DEFINITION at : $isbdfield" unless $fieldvalue;
            #             warn "FV : $fieldvalue";
            if ( $subfvalue ne "" ) {
                # OPAC hidden subfield
                next
                  if ( ( $template eq 'opac' )
                    && ( $tagslib->{$fieldvalue}->{$subfvalue}->{'hidden'} || 0 ) > 0 );
                foreach my $field (@fieldslist) {
                    foreach my $subfield ( $field->subfield($subfvalue) ) {
                        my $calculated = $analysestring;
                        my $tag        = $field->tag();
                        if ( $tag < 10 ) {
                        } else {
                            my $subfieldvalue = GetAuthorisedValueDesc( $tag, $subfvalue, $subfield, '', $tagslib );
                            my $tagsubf = $tag . $subfvalue;
                            $calculated =~ s/\{(.?.?.?.?)$tagsubf(.*?)\}/$1$subfieldvalue$2\{$1$tagsubf$2\}/g;
                            if ( $template eq "opac" ) { $calculated =~ s#/cgi-bin/koha/[^/]+/([^.]*.pl\?.*)$#opac-$1#g; }

                            # field builded, store the result
                            if ( $calculated && !$hasputtextbefore ) {    # put textbefore if not done
                                $blocres .= $textbefore;
                                $hasputtextbefore = 1;
                            }

                            # remove punctuation at start
                            $calculated =~ s/^( |;|:|\.|-)*//g;
                            $blocres .= $calculated;

                        }
                    }
                }
                $blocres .= $textafter if $hasputtextbefore;
            } else {
                foreach my $field (@fieldslist) {
                    my $calculated = $analysestring;
                    my $tag        = $field->tag();
                    if ( $tag < 10 ) {
                    } else {
                        my @subf = $field->subfields;
                        for my $i ( 0 .. $#subf ) {
                            my $valuecode     = $subf[$i][1];
                            my $subfieldcode  = $subf[$i][0];
                            # OPAC hidden subfield
                            next
                              if ( ( $template eq 'opac' )
                                && ( $tagslib->{$fieldvalue}->{$subfieldcode}->{'hidden'} || 0 ) > 0 );
                            my $subfieldvalue = GetAuthorisedValueDesc( $tag, $subf[$i][0], $subf[$i][1], '', $tagslib );
                            my $tagsubf       = $tag . $subfieldcode;

                            $calculated =~ s/                  # replace all {{}} codes by the value code.
                                  \{\{$tagsubf\}\} # catch the {{actualcode}}
                                /
                                  $valuecode     # replace by the value code
                               /gx;

                            $calculated =~ s/\{(.?.?.?.?)$tagsubf(.*?)\}/$1$subfieldvalue$2\{$1$tagsubf$2\}/g;
                            if ( $template eq "opac" ) { $calculated =~ s#/cgi-bin/koha/[^/]+/([^.]*.pl\?.*)$#opac-$1#g; }
                        }

                        # field builded, store the result
                        if ( $calculated && !$hasputtextbefore ) {    # put textbefore if not done
                            $blocres .= $textbefore;
                            $hasputtextbefore = 1;
                        }

                        # remove punctuation at start
                        $calculated =~ s/^( |;|:|\.|-)*//g;
                        $blocres .= $calculated;
                    }
                }
                $blocres .= $textafter if $hasputtextbefore;
            }
        } else {
            $blocres .= $isbdfield;
        }
    }
    $res .= $blocres;

    $res =~ s/\{(.*?)\}//g;
    $res =~ s/\\n/\n/g;
    $res =~ s/\n/<br\/>/g;

    # remove empty ()
    $res =~ s/\(\)//g;

    return $res;
}

=head2 GetBiblio

  my $biblio = &GetBiblio($biblionumber);

=cut

sub GetBiblio {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $sth            = $dbh->prepare("SELECT * FROM biblio WHERE biblionumber = ?");
    my $count          = 0;
    my @results;
    $sth->execute($biblionumber);
    if ( my $data = $sth->fetchrow_hashref ) {
        return $data;
    }
    return;
}    # sub GetBiblio

=head2 GetBiblioItemInfosOf

  GetBiblioItemInfosOf(@biblioitemnumbers);

=cut

sub GetBiblioItemInfosOf {
    my @biblioitemnumbers = @_;

    my $biblioitemnumber_values = @biblioitemnumbers ? join( ',', @biblioitemnumbers ) : "''";

    my $query = "
        SELECT biblioitemnumber,
            publicationyear,
            itemtype
        FROM biblioitems
        WHERE biblioitemnumber IN ($biblioitemnumber_values)
    ";
    return get_infos_of( $query, 'biblioitemnumber' );
}

=head1 FUNCTIONS FOR HANDLING MARC MANAGEMENT

=head2 GetMarcStructure

  $res = GetMarcStructure($forlibrarian,$frameworkcode);

Returns a reference to a big hash of hash, with the Marc structure for the given frameworkcode
$forlibrarian  :if set to 1, the MARC descriptions are the librarians ones, otherwise it's the public (OPAC) ones
$frameworkcode : the framework code to read

=cut

sub GetMarcStructure {
    my ( $forlibrarian, $frameworkcode ) = @_;
    my $dbh = C4::Context->dbh;
    $frameworkcode = "" unless $frameworkcode;

    $forlibrarian = $forlibrarian ? 1 : 0;
    my $cache = Koha::Cache->get_instance();
    my $cache_key = "MarcStructure-$forlibrarian-$frameworkcode";
    my $cached = $cache->get_from_cache($cache_key);
    return $cached if $cached;

    my $sth = $dbh->prepare(
        "SELECT tagfield,liblibrarian,libopac,mandatory,repeatable 
        FROM marc_tag_structure 
        WHERE frameworkcode=? 
        ORDER BY tagfield"
    );
    $sth->execute($frameworkcode);
    my ( $liblibrarian, $libopac, $tag, $res, $tab, $mandatory, $repeatable );

    while ( ( $tag, $liblibrarian, $libopac, $mandatory, $repeatable ) = $sth->fetchrow ) {
        $res->{$tag}->{lib}        = ( $forlibrarian or !$libopac ) ? $liblibrarian : $libopac;
        $res->{$tag}->{tab}        = "";
        $res->{$tag}->{mandatory}  = $mandatory;
        $res->{$tag}->{repeatable} = $repeatable;
    }

    $sth = $dbh->prepare(
        "SELECT tagfield,tagsubfield,liblibrarian,libopac,tab,mandatory,repeatable,authorised_value,authtypecode,value_builder,kohafield,seealso,hidden,isurl,link,defaultvalue,maxlength
         FROM   marc_subfield_structure 
         WHERE  frameworkcode=? 
         ORDER BY tagfield,tagsubfield
        "
    );

    $sth->execute($frameworkcode);

    my $subfield;
    my $authorised_value;
    my $authtypecode;
    my $value_builder;
    my $kohafield;
    my $seealso;
    my $hidden;
    my $isurl;
    my $link;
    my $defaultvalue;
    my $maxlength;

    while (
        (   $tag,          $subfield,      $liblibrarian, $libopac, $tab,    $mandatory, $repeatable, $authorised_value,
            $authtypecode, $value_builder, $kohafield,    $seealso, $hidden, $isurl,     $link,       $defaultvalue,
            $maxlength
        )
        = $sth->fetchrow
      ) {
        $res->{$tag}->{$subfield}->{lib}              = ( $forlibrarian or !$libopac ) ? $liblibrarian : $libopac;
        $res->{$tag}->{$subfield}->{tab}              = $tab;
        $res->{$tag}->{$subfield}->{mandatory}        = $mandatory;
        $res->{$tag}->{$subfield}->{repeatable}       = $repeatable;
        $res->{$tag}->{$subfield}->{authorised_value} = $authorised_value;
        $res->{$tag}->{$subfield}->{authtypecode}     = $authtypecode;
        $res->{$tag}->{$subfield}->{value_builder}    = $value_builder;
        $res->{$tag}->{$subfield}->{kohafield}        = $kohafield;
        $res->{$tag}->{$subfield}->{seealso}          = $seealso;
        $res->{$tag}->{$subfield}->{hidden}           = $hidden;
        $res->{$tag}->{$subfield}->{isurl}            = $isurl;
        $res->{$tag}->{$subfield}->{'link'}           = $link;
        $res->{$tag}->{$subfield}->{defaultvalue}     = $defaultvalue;
        $res->{$tag}->{$subfield}->{maxlength}        = $maxlength;
    }

    $cache->set_in_cache($cache_key, $res);
    return $res;
}

=head2 GetUsedMarcStructure

The same function as GetMarcStructure except it just takes field
in tab 0-9. (used field)

  my $results = GetUsedMarcStructure($frameworkcode);

C<$results> is a ref to an array which each case containts a ref
to a hash which each keys is the columns from marc_subfield_structure

C<$frameworkcode> is the framework code. 

=cut

sub GetUsedMarcStructure {
    my $frameworkcode = shift || '';
    my $query = qq/
        SELECT *
        FROM   marc_subfield_structure
        WHERE   tab > -1 
            AND frameworkcode = ?
        ORDER BY tagfield, tagsubfield
    /;
    my $sth = C4::Context->dbh->prepare($query);
    $sth->execute($frameworkcode);
    return $sth->fetchall_arrayref( {} );
}

=head2 GetMarcFromKohaField

  ($MARCfield,$MARCsubfield)=GetMarcFromKohaField($kohafield,$frameworkcode);

Returns the MARC fields & subfields mapped to the koha field 
for the given frameworkcode or default framework if $frameworkcode is missing

=cut

sub GetMarcFromKohaField {
    my $kohafield = shift;
    my $frameworkcode = shift || '';
    return (0, undef) unless $kohafield;
    my $relations = C4::Context->marcfromkohafield;
    if ( my $mf = $relations->{$frameworkcode}->{$kohafield} ) {
        return @$mf;
    }
    return (0, undef);
}

=head2 GetMarcSubfieldStructureFromKohaField

    my $subfield_structure = &GetMarcSubfieldStructureFromKohaField($kohafield, $frameworkcode);

Returns a hashref where keys are marc_subfield_structure column names for the
row where kohafield=$kohafield for the given framework code.

$frameworkcode is optional. If not given, then the default framework is used.

=cut

sub GetMarcSubfieldStructureFromKohaField {
    my ($kohafield, $frameworkcode) = @_;

    return undef unless $kohafield;
    $frameworkcode //= '';

    my $dbh = C4::Context->dbh;
    my $query = qq{
        SELECT *
        FROM marc_subfield_structure
        WHERE kohafield = ?
          AND frameworkcode = ?
    };
    my $sth = $dbh->prepare($query);
    $sth->execute($kohafield, $frameworkcode);
    my $result = $sth->fetchrow_hashref;
    $sth->finish;

    return $result;
}

=head2 GetMarcBiblio

  my $record = GetMarcBiblio($biblionumber, [$embeditems]);

Returns MARC::Record representing bib identified by
C<$biblionumber>.  If no bib exists, returns undef.
C<$embeditems>.  If set to true, items data are included.
The MARC record contains biblio data, and items data if $embeditems is set to true.

=cut

sub GetMarcBiblio {
    my $biblionumber = shift;
    my $embeditems   = shift || 0;
    my $dbh          = C4::Context->dbh;
    my $sth          = $dbh->prepare("SELECT marcxml FROM biblioitems WHERE biblionumber=? ");
    $sth->execute($biblionumber);
    my $row     = $sth->fetchrow_hashref;
    my $marcxml = StripNonXmlChars( $row->{'marcxml'} );
    MARC::File::XML->default_record_format( C4::Context->preference('marcflavour') );
    my $record = MARC::Record->new();

    if ($marcxml) {
        $record = eval { MARC::Record::new_from_xml( $marcxml, "utf8", C4::Context->preference('marcflavour') ) };
        if ($@) { warn " problem with :$biblionumber : $@ \n$marcxml"; }
        return unless $record;

        C4::Biblio::_koha_marc_update_bib_ids($record, '', $biblionumber, $biblionumber);
	C4::Biblio::EmbedItemsInMarcBiblio($record, $biblionumber) if ($embeditems);

        return $record;
    } else {
        return;
    }
}

=head2 GetXmlBiblio

  my $marcxml = GetXmlBiblio($biblionumber);

Returns biblioitems.marcxml of the biblionumber passed in parameter.
The XML should only contain biblio information (item information is no longer stored in marcxml field)

=cut

sub GetXmlBiblio {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $sth            = $dbh->prepare("SELECT marcxml FROM biblioitems WHERE biblionumber=? ");
    $sth->execute($biblionumber);
    my ($marcxml) = $sth->fetchrow;
    return $marcxml;
}

=head2 GetCOinSBiblio

  my $coins = GetCOinSBiblio($record);

Returns the COinS (a span) which can be included in a biblio record

=cut

sub GetCOinSBiblio {
    my $record = shift;

    # get the coin format
    if ( ! $record ) {
        carp 'GetCOinSBiblio called with undefined record';
        return;
    }
    my $pos7 = substr $record->leader(), 7, 1;
    my $pos6 = substr $record->leader(), 6, 1;
    my $mtx;
    my $genre;
    my ( $aulast, $aufirst ) = ( '', '' );
    my $oauthors  = '';
    my $title     = '';
    my $subtitle  = '';
    my $pubyear   = '';
    my $isbn      = '';
    my $issn      = '';
    my $publisher = '';
    my $pages     = '';
    my $titletype = 'b';

    # For the purposes of generating COinS metadata, LDR/06-07 can be
    # considered the same for UNIMARC and MARC21
    my $fmts6;
    my $fmts7;
    %$fmts6 = (
                'a' => 'book',
                'b' => 'manuscript',
                'c' => 'book',
                'd' => 'manuscript',
                'e' => 'map',
                'f' => 'map',
                'g' => 'film',
                'i' => 'audioRecording',
                'j' => 'audioRecording',
                'k' => 'artwork',
                'l' => 'document',
                'm' => 'computerProgram',
                'o' => 'document',
                'r' => 'document',
            );
    %$fmts7 = (
                    'a' => 'journalArticle',
                    's' => 'journal',
              );

    $genre = $fmts6->{$pos6} ? $fmts6->{$pos6} : 'book';

    if ( $genre eq 'book' ) {
            $genre = $fmts7->{$pos7} if $fmts7->{$pos7};
    }

    ##### We must transform mtx to a valable mtx and document type ####
    if ( $genre eq 'book' ) {
            $mtx = 'book';
    } elsif ( $genre eq 'journal' ) {
            $mtx = 'journal';
            $titletype = 'j';
    } elsif ( $genre eq 'journalArticle' ) {
            $mtx   = 'journal';
            $genre = 'article';
            $titletype = 'a';
    } else {
            $mtx = 'dc';
    }

    $genre = ( $mtx eq 'dc' ) ? "&amp;rft.type=$genre" : "&amp;rft.genre=$genre";

    if ( C4::Context->preference("marcflavour") eq "UNIMARC" ) {

        # Setting datas
        $aulast  = $record->subfield( '700', 'a' ) || '';
        $aufirst = $record->subfield( '700', 'b' ) || '';
        $oauthors = "&amp;rft.au=$aufirst $aulast";

        # others authors
        if ( $record->field('200') ) {
            for my $au ( $record->field('200')->subfield('g') ) {
                $oauthors .= "&amp;rft.au=$au";
            }
        }
        $title =
          ( $mtx eq 'dc' )
          ? "&amp;rft.title=" . $record->subfield( '200', 'a' )
          : "&amp;rft.title=" . $record->subfield( '200', 'a' ) . "&amp;rft.btitle=" . $record->subfield( '200', 'a' );
        $pubyear   = $record->subfield( '210', 'd' ) || '';
        $publisher = $record->subfield( '210', 'c' ) || '';
        $isbn      = $record->subfield( '010', 'a' ) || '';
        $issn      = $record->subfield( '011', 'a' ) || '';
    } else {

        # MARC21 need some improve

        # Setting datas
        if ( $record->field('100') ) {
            $oauthors .= "&amp;rft.au=" . $record->subfield( '100', 'a' );
        }

        # others authors
        if ( $record->field('700') ) {
            for my $au ( $record->field('700')->subfield('a') ) {
                $oauthors .= "&amp;rft.au=$au";
            }
        }
        $title = "&amp;rft." . $titletype . "title=" . $record->subfield( '245', 'a' );
        $subtitle = $record->subfield( '245', 'b' ) || '';
        $title .= $subtitle;
        if ($titletype eq 'a') {
            $pubyear   = $record->field('008') || '';
            $pubyear   = substr($pubyear->data(), 7, 4) if $pubyear;
            $isbn      = $record->subfield( '773', 'z' ) || '';
            $issn      = $record->subfield( '773', 'x' ) || '';
            if ($mtx eq 'journal') {
                $title    .= "&amp;rft.title=" . (($record->subfield( '773', 't' ) || $record->subfield( '773', 'a')));
            } else {
                $title    .= "&amp;rft.btitle=" . (($record->subfield( '773', 't' ) || $record->subfield( '773', 'a')) || '');
            }
            foreach my $rel ($record->subfield( '773', 'g' )) {
                if ($pages) {
                    $pages .= ', ';
                }
                $pages .= $rel;
            }
        } else {
            $pubyear   = $record->subfield( '260', 'c' ) || '';
            $publisher = $record->subfield( '260', 'b' ) || '';
            $isbn      = $record->subfield( '020', 'a' ) || '';
            $issn      = $record->subfield( '022', 'a' ) || '';
        }

    }
    my $coins_value =
"ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3A$mtx$genre$title&amp;rft.isbn=$isbn&amp;rft.issn=$issn&amp;rft.aulast=$aulast&amp;rft.aufirst=$aufirst$oauthors&amp;rft.pub=$publisher&amp;rft.date=$pubyear&amp;rft.pages=$pages";
    $coins_value =~ s/(\ |&[^a])/\+/g;
    $coins_value =~ s/\"/\&quot\;/g;

#<!-- TMPL_VAR NAME="ocoins_format" -->&amp;rft.au=<!-- TMPL_VAR NAME="author" -->&amp;rft.btitle=<!-- TMPL_VAR NAME="title" -->&amp;rft.date=<!-- TMPL_VAR NAME="publicationyear" -->&amp;rft.pages=<!-- TMPL_VAR NAME="pages" -->&amp;rft.isbn=<!-- TMPL_VAR NAME=amazonisbn -->&amp;rft.aucorp=&amp;rft.place=<!-- TMPL_VAR NAME="place" -->&amp;rft.pub=<!-- TMPL_VAR NAME="publishercode" -->&amp;rft.edition=<!-- TMPL_VAR NAME="edition" -->&amp;rft.series=<!-- TMPL_VAR NAME="series" -->&amp;rft.genre="

    return $coins_value;
}


=head2 GetMarcPrice

return the prices in accordance with the Marc format.

returns 0 if no price found
returns undef if called without a marc record or with
an unrecognized marc format

=cut

sub GetMarcPrice {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcPrice called on undefined record';
        return;
    }

    my @listtags;
    my $subfield;
    
    if ( $marcflavour eq "MARC21" || $marcflavour eq "NORMARC" ) {
        @listtags = ('345', '020');
        $subfield="c";
    } elsif ( $marcflavour eq "UNIMARC" ) {
        @listtags = ('345', '010');
        $subfield="d";
    } else {
        return;
    }
    
    for my $field ( $record->field(@listtags) ) {
        for my $subfield_value  ($field->subfield($subfield)){
            #check value
            $subfield_value = MungeMarcPrice( $subfield_value );
            return $subfield_value if ($subfield_value);
        }
    }
    return 0; # no price found
}

=head2 MungeMarcPrice

Return the best guess at what the actual price is from a price field.
=cut

sub MungeMarcPrice {
    my ( $price ) = @_;
    return unless ( $price =~ m/\d/ ); ## No digits means no price.
    # Look for the currency symbol and the normalized code of the active currency, if it's there,
    my $active_currency = C4::Budgets->GetCurrency();
    my $symbol = $active_currency->{'symbol'};
    my $isocode = $active_currency->{'isocode'};
    $isocode = $active_currency->{'currency'} unless defined $isocode;
    my $localprice;
    if ( $symbol ) {
        my @matches =($price=~ /
            \s?
            (                          # start of capturing parenthesis
            (?:
            (?:[\p{Sc}\p{L}\/.]){1,4}  # any character from Currency signs or Letter Unicode categories or slash or dot                                              within 1 to 4 occurrences : call this whole block 'symbol block'
            |(?:\d+[\p{P}\s]?){1,4}    # or else at least one digit followed or not by a punctuation sign or whitespace,                                             all theese within 1 to 4 occurrences : call this whole block 'digits block'
            )
            \s?\p{Sc}?\s?              # followed or not by a whitespace. \p{Sc}?\s? are for cases like '25$ USD'
            (?:
            (?:[\p{Sc}\p{L}\/.]){1,4}  # followed by same block as symbol block
            |(?:\d+[\p{P}\s]?){1,4}    # or by same block as digits block
            )
            \s?\p{L}{0,4}\s?           # followed or not by a whitespace. \p{L}{0,4}\s? are for cases like '$9.50 USD'
            )                          # end of capturing parenthesis
            (?:\p{P}|\z)               # followed by a punctuation sign or by the end of the string
            /gx);

        if ( @matches ) {
            foreach ( @matches ) {
                $localprice = $_ and last if index($_, $isocode)>=0;
            }
            if ( !$localprice ) {
                foreach ( @matches ) {
                    $localprice = $_ and last if $_=~ /(^|[^\p{Sc}\p{L}\/])\Q$symbol\E([^\p{Sc}\p{L}\/]+\z|\z)/;
                }
            }
        }
    }
    if ( $localprice ) {
        $price = $localprice;
    } else {
        ## Grab the first number in the string ( can use commas or periods for thousands separator and/or decimal separator )
        ( $price ) = $price =~ m/([\d\,\.]+[[\,\.]\d\d]?)/;
    }
    # eliminate symbol/isocode, space and any final dot from the string
    $price =~ s/[\p{Sc}\p{L}\/ ]|\.$//g;
    # remove comma,dot when used as separators from hundreds
    $price =~s/[\,\.](\d{3})/$1/g;
    # convert comma to dot to ensure correct display of decimals if existing
    $price =~s/,/./;
    return $price;
}


=head2 GetMarcQuantity

return the quantity of a book. Used in acquisition only, when importing a file an iso2709 from a bookseller
Warning : this is not really in the marc standard. In Unimarc, Electre (the most widely used bookseller) use the 969$a

returns 0 if no quantity found
returns undef if called without a marc record or with
an unrecognized marc format

=cut

sub GetMarcQuantity {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcQuantity called on undefined record';
        return;
    }

    my @listtags;
    my $subfield;
    
    if ( $marcflavour eq "MARC21" ) {
        return 0
    } elsif ( $marcflavour eq "UNIMARC" ) {
        @listtags = ('969');
        $subfield="a";
    } else {
        return;
    }
    
    for my $field ( $record->field(@listtags) ) {
        for my $subfield_value  ($field->subfield($subfield)){
            #check value
            if ($subfield_value) {
                 # in France, the cents separator is the , but sometimes, ppl use a .
                 # in this case, the price will be x100 when unformatted ! Replace the . by a , to get a proper price calculation
                $subfield_value =~ s/\./,/ if C4::Context->preference("CurrencyFormat") eq "FR";
                return $subfield_value;
            }
        }
    }
    return 0; # no price found
}


=head2 GetAuthorisedValueDesc

  my $subfieldvalue =get_authorised_value_desc(
    $tag, $subf[$i][0],$subf[$i][1], '', $taglib, $category, $opac);

Retrieve the complete description for a given authorised value.

Now takes $category and $value pair too.

  my $auth_value_desc =GetAuthorisedValueDesc(
    '','', 'DVD' ,'','','CCODE');

If the optional $opac parameter is set to a true value, displays OPAC 
descriptions rather than normal ones when they exist.

=cut

sub GetAuthorisedValueDesc {
    my ( $tag, $subfield, $value, $framework, $tagslib, $category, $opac ) = @_;
    my $dbh = C4::Context->dbh;

    if ( !$category ) {

        return $value unless defined $tagslib->{$tag}->{$subfield}->{'authorised_value'};

        #---- branch
        if ( $tagslib->{$tag}->{$subfield}->{'authorised_value'} eq "branches" ) {
            return C4::Branch::GetBranchName($value);
        }

        #---- itemtypes
        if ( $tagslib->{$tag}->{$subfield}->{'authorised_value'} eq "itemtypes" ) {
            return getitemtypeinfo($value)->{description};
        }

        #---- "true" authorized value
        $category = $tagslib->{$tag}->{$subfield}->{'authorised_value'};
    }

    if ( $category ne "" ) {
        my $sth = $dbh->prepare( "SELECT lib, lib_opac FROM authorised_values WHERE category = ? AND authorised_value = ?" );
        $sth->execute( $category, $value );
        my $data = $sth->fetchrow_hashref;
        return ( $opac && $data->{'lib_opac'} ) ? $data->{'lib_opac'} : $data->{'lib'};
    } else {
        return $value;    # if nothing is found return the original value
    }
}

=head2 GetMarcControlnumber

  $marccontrolnumber = GetMarcControlnumber($record,$marcflavour);

Get the control number / record Identifier from the MARC record and return it.

=cut

sub GetMarcControlnumber {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcControlnumber called on undefined record';
        return;
    }
    my $controlnumber = "";
    # Control number or Record identifier are the same field in MARC21, UNIMARC and NORMARC
    # Keep $marcflavour for possible later use
    if ($marcflavour eq "MARC21" || $marcflavour eq "UNIMARC" || $marcflavour eq "NORMARC") {
        my $controlnumberField = $record->field('001');
        if ($controlnumberField) {
            $controlnumber = $controlnumberField->data();
        }
    }
    return $controlnumber;
}

=head2 GetMarcISBN

  $marcisbnsarray = GetMarcISBN( $record, $marcflavour );

Get all ISBNs from the MARC record and returns them in an array.
ISBNs stored in different fields depending on MARC flavour

=cut

sub GetMarcISBN {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcISBN called on undefined record';
        return;
    }
    my $scope;
    if ( $marcflavour eq "UNIMARC" ) {
        $scope = '010';
    } else {    # assume marc21 if not unimarc
        $scope = '020';
    }

    my @marcisbns;
    foreach my $field ( $record->field($scope) ) {
        my $isbn = $field->subfield( 'a' );
        if ( $isbn ne "" ) {
            push @marcisbns, $isbn;
        }
    }

    return \@marcisbns;
}    # end GetMarcISBN


=head2 GetMarcISSN

  $marcissnsarray = GetMarcISSN( $record, $marcflavour );

Get all valid ISSNs from the MARC record and returns them in an array.
ISSNs are stored in different fields depending on MARC flavour

=cut

sub GetMarcISSN {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcISSN called on undefined record';
        return;
    }
    my $scope;
    if ( $marcflavour eq "UNIMARC" ) {
        $scope = '011';
    }
    else {    # assume MARC21 or NORMARC
        $scope = '022';
    }
    my @marcissns;
    foreach my $field ( $record->field($scope) ) {
        push @marcissns, $field->subfield( 'a' )
            if ( $field->subfield( 'a' ) ne "" );
    }
    return \@marcissns;
}    # end GetMarcISSN

=head2 GetMarcNotes

  $marcnotesarray = GetMarcNotes( $record, $marcflavour );

Get all notes from the MARC record and returns them in an array.
The note are stored in different fields depending on MARC flavour

=cut

sub GetMarcNotes {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcNotes called on undefined record';
        return;
    }
    my $scope;
    if ( $marcflavour eq "UNIMARC" ) {
        $scope = '3..';
    } else {    # assume marc21 if not unimarc
        $scope = '5..';
    }
    my @marcnotes;
    my $note = "";
    my $tag  = "";
    my $marcnote;
    my %blacklist = map { $_ => 1 } split(/,/,C4::Context->preference('NotesBlacklist'));
    foreach my $field ( $record->field($scope) ) {
        my $tag = $field->tag();
        if (!$blacklist{$tag}) {
            my $value = $field->as_string();
            if ( $note ne "" ) {
                $marcnote = { marcnote => $note, };
                push @marcnotes, $marcnote;
                $note = $value;
            }
            if ( $note ne $value ) {
                $note = $note . " " . $value;
            }
        }
    }

    if ($note) {
        $marcnote = { marcnote => $note };
        push @marcnotes, $marcnote;    #load last tag into array
    }
    return \@marcnotes;
}    # end GetMarcNotes

=head2 GetMarcSubjects

  $marcsubjcts = GetMarcSubjects($record,$marcflavour);

Get all subjects from the MARC record and returns them in an array.
The subjects are stored in different fields depending on MARC flavour

=cut

sub GetMarcSubjects {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcSubjects called on undefined record';
        return;
    }
    my ( $mintag, $maxtag, $fields_filter );
    if ( $marcflavour eq "UNIMARC" ) {
        $mintag = "600";
        $maxtag = "611";
        $fields_filter = '6..';
    } else { # marc21/normarc
        $mintag = "600";
        $maxtag = "699";
        $fields_filter = '6..';
    }

    my @marcsubjects;

    my $subject_limit = C4::Context->preference("TraceCompleteSubfields") ? 'su,complete-subfield' : 'su';
    my $AuthoritySeparator = C4::Context->preference('AuthoritySeparator');

    foreach my $field ( $record->field($fields_filter) ) {
        next unless ($field->tag() >= $mintag && $field->tag() <= $maxtag);
        my @subfields_loop;
        my @subfields = $field->subfields();
        my @link_loop;

        # if there is an authority link, build the links with an= subfield9
        my $subfield9 = $field->subfield('9');
        my $authoritylink;
        if ($subfield9) {
            my $linkvalue = $subfield9;
            $linkvalue =~ s/(\(|\))//g;
            @link_loop = ( { limit => 'an', 'link' => $linkvalue } );
            $authoritylink = $linkvalue
        }

        # other subfields
        for my $subject_subfield (@subfields) {
            next if ( $subject_subfield->[0] eq '9' );

            # don't load unimarc subfields 3,4,5
            next if ( ( $marcflavour eq "UNIMARC" ) and ( $subject_subfield->[0] =~ /2|3|4|5/ ) );
            # don't load MARC21 subfields 2 (FIXME: any more subfields??)
            next if ( ( $marcflavour eq "MARC21" ) and ( $subject_subfield->[0] =~ /2/ ) );

            my $code      = $subject_subfield->[0];
            my $value     = $subject_subfield->[1];
            my $linkvalue = $value;
            $linkvalue =~ s/(\(|\))//g;
            # if no authority link, build a search query
            unless ($subfield9) {
                push @link_loop, {
                    limit    => $subject_limit,
                    'link'   => $linkvalue,
                    operator => (scalar @link_loop) ? ' and ' : undef
                };
            }
            my @this_link_loop = @link_loop;
            # do not display $0
            unless ( $code eq '0' ) {
                push @subfields_loop, {
                    code      => $code,
                    value     => $value,
                    link_loop => \@this_link_loop,
                    separator => (scalar @subfields_loop) ? $AuthoritySeparator : ''
                };
            }
        }

        push @marcsubjects, {
            MARCSUBJECT_SUBFIELDS_LOOP => \@subfields_loop,
            authoritylink => $authoritylink,
        };

    }
    return \@marcsubjects;
}    #end getMARCsubjects

=head2 GetMarcAuthors

  authors = GetMarcAuthors($record,$marcflavour);

Get all authors from the MARC record and returns them in an array.
The authors are stored in different fields depending on MARC flavour

=cut

sub GetMarcAuthors {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcAuthors called on undefined record';
        return;
    }
    my ( $mintag, $maxtag, $fields_filter );

    # tagslib useful for UNIMARC author reponsabilities
    my $tagslib =
      &GetMarcStructure( 1, '' );    # FIXME : we don't have the framework available, we take the default framework. May be buggy on some setups, will be usually correct.
    if ( $marcflavour eq "UNIMARC" ) {
        $mintag = "700";
        $maxtag = "712";
        $fields_filter = '7..';
    } else { # marc21/normarc
        $mintag = "700";
        $maxtag = "720";
        $fields_filter = '7..';
    }

    my @marcauthors;
    my $AuthoritySeparator = C4::Context->preference('AuthoritySeparator');

    foreach my $field ( $record->field($fields_filter) ) {
        next unless $field->tag() >= $mintag && $field->tag() <= $maxtag;
        my @subfields_loop;
        my @link_loop;
        my @subfields  = $field->subfields();
        my $count_auth = 0;

        # if there is an authority link, build the link with Koha-Auth-Number: subfield9
        my $subfield9 = $field->subfield('9');
        if ($subfield9) {
            my $linkvalue = $subfield9;
            $linkvalue =~ s/(\(|\))//g;
            @link_loop = ( { 'limit' => 'an', 'link' => $linkvalue } );
        }

        # other subfields
        for my $authors_subfield (@subfields) {
            next if ( $authors_subfield->[0] eq '9' );

            # don't load unimarc subfields 3, 5
            next if ( $marcflavour eq 'UNIMARC' and ( $authors_subfield->[0] =~ /3|5/ ) );

            my $code = $authors_subfield->[0];
            my $value        = $authors_subfield->[1];
            my $linkvalue    = $value;
            $linkvalue =~ s/(\(|\))//g;
            # UNIMARC author responsibility
            if ( $marcflavour eq 'UNIMARC' and $code eq '4' ) {
                $value = GetAuthorisedValueDesc( $field->tag(), $code, $value, '', $tagslib );
                $linkvalue = "($value)";
            }
            # if no authority link, build a search query
            unless ($subfield9) {
                push @link_loop, {
                    limit    => 'au',
                    'link'   => $linkvalue,
                    operator => (scalar @link_loop) ? ' and ' : undef
                };
            }
            my @this_link_loop = @link_loop;
            # do not display $0
            unless ( $code eq '0') {
                push @subfields_loop, {
                    tag       => $field->tag(),
                    code      => $code,
                    value     => $value,
                    link_loop => \@this_link_loop,
                    separator => (scalar @subfields_loop) ? $AuthoritySeparator : ''
                };
            }
        }
        push @marcauthors, {
            MARCAUTHOR_SUBFIELDS_LOOP => \@subfields_loop,
            authoritylink => $subfield9,
        };
    }
    return \@marcauthors;
}

=head2 GetMarcUrls

  $marcurls = GetMarcUrls($record,$marcflavour);

Returns arrayref of URLs from MARC data, suitable to pass to tmpl loop.
Assumes web resources (not uncommon in MARC21 to omit resource type ind) 

=cut

sub GetMarcUrls {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcUrls called on undefined record';
        return;
    }

    my @marcurls;
    for my $field ( $record->field('856') ) {
        my @notes;
        for my $note ( $field->subfield('z') ) {
            push @notes, { note => $note };
        }
        my @urls = $field->subfield('u');
        foreach my $url (@urls) {
            my $marcurl;
            if ( $marcflavour eq 'MARC21' ) {
                my $s3   = $field->subfield('3');
                my $link = $field->subfield('y');
                unless ( $url =~ /^\w+:/ ) {
                    if ( $field->indicator(1) eq '7' ) {
                        $url = $field->subfield('2') . "://" . $url;
                    } elsif ( $field->indicator(1) eq '1' ) {
                        $url = 'ftp://' . $url;
                    } else {

                        #  properly, this should be if ind1=4,
                        #  however we will assume http protocol since we're building a link.
                        $url = 'http://' . $url;
                    }
                }

                # TODO handle ind 2 (relationship)
                $marcurl = {
                    MARCURL => $url,
                    notes   => \@notes,
                };
                $marcurl->{'linktext'} = $link || $s3 || C4::Context->preference('URLLinkText') || $url;
                $marcurl->{'part'} = $s3 if ($link);
                $marcurl->{'toc'} = 1 if ( defined($s3) && $s3 =~ /^[Tt]able/ );
            } else {
                $marcurl->{'linktext'} = $field->subfield('2') || C4::Context->preference('URLLinkText') || $url;
                $marcurl->{'MARCURL'} = $url;
            }
            push @marcurls, $marcurl;
        }
    }
    return \@marcurls;
}

=head2 GetMarcSeries

  $marcseriesarray = GetMarcSeries($record,$marcflavour);

Get all series from the MARC record and returns them in an array.
The series are stored in different fields depending on MARC flavour

=cut

sub GetMarcSeries {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcSeries called on undefined record';
        return;
    }

    my ( $mintag, $maxtag, $fields_filter );
    if ( $marcflavour eq "UNIMARC" ) {
        $mintag = "225";
        $maxtag = "225";
        $fields_filter = '2..';
    } else {    # marc21/normarc
        $mintag = "440";
        $maxtag = "490";
        $fields_filter = '4..';
    }

    my @marcseries;
    my $AuthoritySeparator = C4::Context->preference('AuthoritySeparator');

    foreach my $field ( $record->field($fields_filter) ) {
        next unless $field->tag() >= $mintag && $field->tag() <= $maxtag;
        my @subfields_loop;
        my @subfields = $field->subfields();
        my @link_loop;

        for my $series_subfield (@subfields) {

            # ignore $9, used for authority link
            next if ( $series_subfield->[0] eq '9' );

            my $volume_number;
            my $code      = $series_subfield->[0];
            my $value     = $series_subfield->[1];
            my $linkvalue = $value;
            $linkvalue =~ s/(\(|\))//g;

            # see if this is an instance of a volume
            if ( $code eq 'v' ) {
                $volume_number = 1;
            }

            push @link_loop, {
                'link' => $linkvalue,
                operator => (scalar @link_loop) ? ' and ' : undef
            };

            if ($volume_number) {
                push @subfields_loop, { volumenum => $value };
            } else {
                push @subfields_loop, {
                    code      => $code,
                    value     => $value,
                    link_loop => \@link_loop,
                    separator => (scalar @subfields_loop) ? $AuthoritySeparator : '',
                    volumenum => $volume_number,
                }
            }
        }
        push @marcseries, { MARCSERIES_SUBFIELDS_LOOP => \@subfields_loop };

    }
    return \@marcseries;
}    #end getMARCseriess

=head2 GetMarcHosts

  $marchostsarray = GetMarcHosts($record,$marcflavour);

Get all host records (773s MARC21, 461 UNIMARC) from the MARC record and returns them in an array.

=cut

sub GetMarcHosts {
    my ( $record, $marcflavour ) = @_;
    if (!$record) {
        carp 'GetMarcHosts called on undefined record';
        return;
    }

    my ( $tag,$title_subf,$bibnumber_subf,$itemnumber_subf);
    $marcflavour ||="MARC21";
    if ( $marcflavour eq "MARC21" || $marcflavour eq "NORMARC" ) {
        $tag = "773";
        $title_subf = "t";
        $bibnumber_subf ="0";
        $itemnumber_subf='9';
    }
    elsif ($marcflavour eq "UNIMARC") {
        $tag = "461";
        $title_subf = "t";
        $bibnumber_subf ="0";
        $itemnumber_subf='9';
    };

    my @marchosts;

    foreach my $field ( $record->field($tag)) {

        my @fields_loop;

        my $hostbiblionumber = $field->subfield("$bibnumber_subf");
        my $hosttitle = $field->subfield($title_subf);
        my $hostitemnumber=$field->subfield($itemnumber_subf);
        push @fields_loop, { hostbiblionumber => $hostbiblionumber, hosttitle => $hosttitle, hostitemnumber => $hostitemnumber};
        push @marchosts, { MARCHOSTS_FIELDS_LOOP => \@fields_loop };

        }
    my $marchostsarray = \@marchosts;
    return $marchostsarray;
}

=head2 GetFrameworkCode

  $frameworkcode = GetFrameworkCode( $biblionumber )

=cut

sub GetFrameworkCode {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $sth            = $dbh->prepare("SELECT frameworkcode FROM biblio WHERE biblionumber=?");
    $sth->execute($biblionumber);
    my ($frameworkcode) = $sth->fetchrow;
    return $frameworkcode;
}

=head2 TransformKohaToMarc

    $record = TransformKohaToMarc( $hash )

This function builds partial MARC::Record from a hash
Hash entries can be from biblio or biblioitems.

This function is called in acquisition module, to create a basic catalogue
entry from user entry

=cut


sub TransformKohaToMarc {
    my $hash = shift;
    my $record = MARC::Record->new();
    SetMarcUnicodeFlag( $record, C4::Context->preference("marcflavour") );
    my $db_to_marc = C4::Context->marcfromkohafield;
    my $tag_hr = {};
    while ( my ($name, $value) = each %$hash ) {
        next unless my $dtm = $db_to_marc->{''}->{$name};
        next unless ( scalar( @$dtm ) );
        my ($tag, $letter) = @$dtm;
        $tag .= '';
        foreach my $value ( split(/\s?\|\s?/, $value, -1) ) {
            next if $value eq '';
            $tag_hr->{$tag} //= [];
            push @{$tag_hr->{$tag}}, [($letter, $value)];
        }
    }
    foreach my $tag (sort keys %$tag_hr) {
        my @sfl = @{$tag_hr->{$tag}};
        @sfl = sort { $a->[0] cmp $b->[0]; } @sfl;
        @sfl = map { @{$_}; } @sfl;
        $record->insert_fields_ordered(
            MARC::Field->new($tag, " ", " ", @sfl)
        );
    }
    return $record;
}

=head2 PrepHostMarcField

    $hostfield = PrepHostMarcField ( $hostbiblionumber,$hostitemnumber,$marcflavour )

This function returns a host field populated with data from the host record, the field can then be added to an analytical record

=cut

sub PrepHostMarcField {
    my ($hostbiblionumber,$hostitemnumber, $marcflavour) = @_;
    $marcflavour ||="MARC21";
    
    require C4::Items;
    my $hostrecord = GetMarcBiblio($hostbiblionumber);
	my $item = C4::Items::GetItem($hostitemnumber);
	
	my $hostmarcfield;
    if ( $marcflavour eq "MARC21" || $marcflavour eq "NORMARC" ) {
	
        #main entry
        my $mainentry;
        if ($hostrecord->subfield('100','a')){
            $mainentry = $hostrecord->subfield('100','a');
        } elsif ($hostrecord->subfield('110','a')){
            $mainentry = $hostrecord->subfield('110','a');
        } else {
            $mainentry = $hostrecord->subfield('111','a');
        }
	
        # qualification info
        my $qualinfo;
        if (my $field260 = $hostrecord->field('260')){
            $qualinfo =  $field260->as_string( 'abc' );
        }
	

    	#other fields
        my $ed = $hostrecord->subfield('250','a');
        my $barcode = $item->{'barcode'};
        my $title = $hostrecord->subfield('245','a');

        # record control number, 001 with 003 and prefix
        my $recctrlno;
        if ($hostrecord->field('001')){
            $recctrlno = $hostrecord->field('001')->data();
            if ($hostrecord->field('003')){
                $recctrlno = '('.$hostrecord->field('003')->data().')'.$recctrlno;
            }
        }

        # issn/isbn
        my $issn = $hostrecord->subfield('022','a');
        my $isbn = $hostrecord->subfield('020','a');


        $hostmarcfield = MARC::Field->new(
                773, '0', '',
                '0' => $hostbiblionumber,
                '9' => $hostitemnumber,
                'a' => $mainentry,
                'b' => $ed,
                'd' => $qualinfo,
                'o' => $barcode,
                't' => $title,
                'w' => $recctrlno,
                'x' => $issn,
                'z' => $isbn
                );
    } elsif ($marcflavour eq "UNIMARC") {
        $hostmarcfield = MARC::Field->new(
            461, '', '',
            '0' => $hostbiblionumber,
            't' => $hostrecord->subfield('200','a'), 
            '9' => $hostitemnumber
        );	
    };

    return $hostmarcfield;
}

=head2 TransformHtmlToXml

  $xml = TransformHtmlToXml( $tags, $subfields, $values, $indicator, 
                             $ind_tag, $auth_type )

$auth_type contains :

=over

=item - nothing : rebuild a biblio. In UNIMARC the encoding is in 100$a pos 26/27

=item - UNIMARCAUTH : rebuild an authority. In UNIMARC, the encoding is in 100$a pos 13/14

=item - ITEM : rebuild an item : in UNIMARC, 100$a, it's in the biblio ! (otherwise, we would get 2 100 fields !)

=back

=cut

sub TransformHtmlToXml {
    my ( $tags, $subfields, $values, $indicator, $ind_tag, $auth_type ) = @_;
    my $xml = MARC::File::XML::header('UTF-8');
    $xml .= "<record>\n";
    $auth_type = C4::Context->preference('marcflavour') unless $auth_type;
    MARC::File::XML->default_record_format($auth_type);

    # in UNIMARC, field 100 contains the encoding
    # check that there is one, otherwise the
    # MARC::Record->new_from_xml will fail (and Koha will die)
    my $unimarc_and_100_exist = 0;
    $unimarc_and_100_exist = 1 if $auth_type eq 'ITEM';    # if we rebuild an item, no need of a 100 field
    my $prevvalue;
    my $prevtag = -1;
    my $first   = 1;
    my $j       = -1;
    for ( my $i = 0 ; $i < @$tags ; $i++ ) {

        if ( C4::Context->preference('marcflavour') eq 'UNIMARC' and @$tags[$i] eq "100" and @$subfields[$i] eq "a" ) {

            # if we have a 100 field and it's values are not correct, skip them.
            # if we don't have any valid 100 field, we will create a default one at the end
            my $enc = substr( @$values[$i], 26, 2 );
            if ( $enc eq '01' or $enc eq '50' or $enc eq '03' ) {
                $unimarc_and_100_exist = 1;
            } else {
                next;
            }
        }
        @$values[$i] =~ s/&/&amp;/g;
        @$values[$i] =~ s/</&lt;/g;
        @$values[$i] =~ s/>/&gt;/g;
        @$values[$i] =~ s/"/&quot;/g;
        @$values[$i] =~ s/'/&apos;/g;

        #         if ( !utf8::is_utf8( @$values[$i] ) ) {
        #             utf8::decode( @$values[$i] );
        #         }
        if ( ( @$tags[$i] ne $prevtag ) ) {
            $j++ unless ( @$tags[$i] eq "" );
            my $indicator1 = eval { substr( @$indicator[$j], 0, 1 ) };
            my $indicator2 = eval { substr( @$indicator[$j], 1, 1 ) };
            my $ind1       = _default_ind_to_space($indicator1);
            my $ind2;
            if ( @$indicator[$j] ) {
                $ind2 = _default_ind_to_space($indicator2);
            } else {
                warn "Indicator in @$tags[$i] is empty";
                $ind2 = " ";
            }
            if ( !$first ) {
                $xml .= "</datafield>\n";
                if (   ( @$tags[$i] && @$tags[$i] > 10 )
                    && ( @$values[$i] ne "" ) ) {
                    $xml .= "<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
                    $xml .= "<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
                    $first = 0;
                } else {
                    $first = 1;
                }
            } else {
                if ( @$values[$i] ne "" ) {

                    # leader
                    if ( @$tags[$i] eq "000" ) {
                        $xml .= "<leader>@$values[$i]</leader>\n";
                        $first = 1;

                        # rest of the fixed fields
                    } elsif ( @$tags[$i] < 10 ) {
                        $xml .= "<controlfield tag=\"@$tags[$i]\">@$values[$i]</controlfield>\n";
                        $first = 1;
                    } else {
                        $xml .= "<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
                        $xml .= "<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
                        $first = 0;
                    }
                }
            }
        } else {    # @$tags[$i] eq $prevtag
            my $indicator1 = eval { substr( @$indicator[$j], 0, 1 ) };
            my $indicator2 = eval { substr( @$indicator[$j], 1, 1 ) };
            my $ind1       = _default_ind_to_space($indicator1);
            my $ind2;
            if ( @$indicator[$j] ) {
                $ind2 = _default_ind_to_space($indicator2);
            } else {
                warn "Indicator in @$tags[$i] is empty";
                $ind2 = " ";
            }
            if ( @$values[$i] eq "" ) {
            } else {
                if ($first) {
                    $xml .= "<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
                    $first = 0;
                }
                $xml .= "<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
            }
        }
        $prevtag = @$tags[$i];
    }
    $xml .= "</datafield>\n" if $xml =~ m/<datafield/;
    if ( C4::Context->preference('marcflavour') eq 'UNIMARC' and !$unimarc_and_100_exist ) {

        #     warn "SETTING 100 for $auth_type";
        my $string = strftime( "%Y%m%d", localtime(time) );

        # set 50 to position 26 is biblios, 13 if authorities
        my $pos = 26;
        $pos = 13 if $auth_type eq 'UNIMARCAUTH';
        $string = sprintf( "%-*s", 35, $string );
        substr( $string, $pos, 6, "50" );
        $xml .= "<datafield tag=\"100\" ind1=\"\" ind2=\"\">\n";
        $xml .= "<subfield code=\"a\">$string</subfield>\n";
        $xml .= "</datafield>\n";
    }
    $xml .= "</record>\n";
    $xml .= MARC::File::XML::footer();
    return $xml;
}

=head2 _default_ind_to_space

Passed what should be an indicator returns a space
if its undefined or zero length

=cut

sub _default_ind_to_space {
    my $s = shift;
    if ( !defined $s || $s eq q{} ) {
        return ' ';
    }
    return $s;
}

=head2 TransformHtmlToMarc

    L<$record> = TransformHtmlToMarc(L<$cgi>)
    L<$cgi> is the CGI object which containts the values for subfields
    {
        'tag_010_indicator1_531951' ,
        'tag_010_indicator2_531951' ,
        'tag_010_code_a_531951_145735' ,
        'tag_010_subfield_a_531951_145735' ,
        'tag_200_indicator1_873510' ,
        'tag_200_indicator2_873510' ,
        'tag_200_code_a_873510_673465' ,
        'tag_200_subfield_a_873510_673465' ,
        'tag_200_code_b_873510_704318' ,
        'tag_200_subfield_b_873510_704318' ,
        'tag_200_code_e_873510_280822' ,
        'tag_200_subfield_e_873510_280822' ,
        'tag_200_code_f_873510_110730' ,
        'tag_200_subfield_f_873510_110730' ,
    }
    L<$record> is the MARC::Record object.

=cut

sub TransformHtmlToMarc {
    my $cgi    = shift;

    my @params = $cgi->param();

    # explicitly turn on the UTF-8 flag for all
    # 'tag_' parameters to avoid incorrect character
    # conversion later on
    my $cgi_params = $cgi->Vars;
    foreach my $param_name ( keys %$cgi_params ) {
        if ( $param_name =~ /^tag_/ ) {
            my $param_value = $cgi_params->{$param_name};
            if ( utf8::decode($param_value) ) {
                $cgi_params->{$param_name} = $param_value;
            }

            # FIXME - need to do something if string is not valid UTF-8
        }
    }

    # creating a new record
    my $record = MARC::Record->new();
    my $i      = 0;
    my @fields;
#FIXME This code assumes that the CGI params will be in the same order as the fields in the template; this is no absolute guarantee!
    while ( $params[$i] ) {    # browse all CGI params
        my $param    = $params[$i];
        my $newfield = 0;

        # if we are on biblionumber, store it in the MARC::Record (it may not be in the edited fields)
        if ( $param eq 'biblionumber' ) {
            my ( $biblionumbertagfield, $biblionumbertagsubfield ) = &GetMarcFromKohaField( "biblio.biblionumber", '' );
            if ( $biblionumbertagfield < 10 ) {
                $newfield = MARC::Field->new( $biblionumbertagfield, $cgi->param($param), );
            } else {
                $newfield = MARC::Field->new( $biblionumbertagfield, '', '', "$biblionumbertagsubfield" => $cgi->param($param), );
            }
            push @fields, $newfield if ($newfield);
        } elsif ( $param =~ /^tag_(\d*)_indicator1_/ ) {    # new field start when having 'input name="..._indicator1_..."
            my $tag = $1;

            my $ind1 = _default_ind_to_space( substr( $cgi->param($param), 0, 1 ) );
            my $ind2 = _default_ind_to_space( substr( $cgi->param( $params[ $i + 1 ] ), 0, 1 ) );
            $newfield = 0;
            my $j = $i + 2;

            if ( $tag < 10 ) {                              # no code for theses fields
                                                            # in MARC editor, 000 contains the leader.
                if ( $tag eq '000' ) {
                    # Force a fake leader even if not provided to avoid crashing
                    # during decoding MARC record containing UTF-8 characters
                    $record->leader(
                        length( $cgi->param($params[$j+1]) ) == 24
                        ? $cgi->param( $params[ $j + 1 ] )
                        : '     nam a22        4500'
			)
                    ;
                    # between 001 and 009 (included)
                } elsif ( $cgi->param( $params[ $j + 1 ] ) ne '' ) {
                    $newfield = MARC::Field->new( $tag, $cgi->param( $params[ $j + 1 ] ), );
                }

                # > 009, deal with subfields
            } else {
                # browse subfields for this tag (reason for _code_ match)
                while(defined $params[$j] && $params[$j] =~ /_code_/) {
                    last unless defined $params[$j+1];
                    #if next param ne subfield, then it was probably empty
                    #try next param by incrementing j
                    if($params[$j+1]!~/_subfield_/) {$j++; next; }
                    my $fval= $cgi->param($params[$j+1]);
                    #check if subfield value not empty and field exists
                    if($fval ne '' && $newfield) {
                        $newfield->add_subfields( $cgi->param($params[$j]) => $fval);
                    }
                    elsif($fval ne '') {
                        $newfield = MARC::Field->new( $tag, $ind1, $ind2, $cgi->param($params[$j]) => $fval );
                    }
                    $j += 2;
                } #end-of-while
                $i= $j-1; #update i for outer loop accordingly
            }
            push @fields, $newfield if ($newfield);
        }
        $i++;
    }

    $record->append_fields(@fields);
    return $record;
}

# cache inverted MARC field map
our $inverted_field_map;

=head2 TransformMarcToKoha

  $result = TransformMarcToKoha( $dbh, $record, $frameworkcode )

Extract data from a MARC bib record into a hashref representing
Koha biblio, biblioitems, and items fields. 

If passed an undefined record will log the error and return an empty
hash_ref

=cut

sub TransformMarcToKoha {
    my ( $dbh, $record, $frameworkcode, $limit_table ) = @_;

    my $result = {};
    if (!defined $record) {
        carp('TransformMarcToKoha called with undefined record');
        return $result;
    }
    $limit_table = $limit_table || 0;
    $frameworkcode = '' unless defined $frameworkcode;

    unless ( defined $inverted_field_map ) {
        $inverted_field_map = _get_inverted_marc_field_map();
    }

    my %tables = ();
    if ( defined $limit_table && $limit_table eq 'items' ) {
        $tables{'items'} = 1;
    } else {
        $tables{'items'}       = 1;
        $tables{'biblio'}      = 1;
        $tables{'biblioitems'} = 1;
    }

    # traverse through record
  MARCFIELD: foreach my $field ( $record->fields() ) {
        my $tag = $field->tag();
        next MARCFIELD unless exists $inverted_field_map->{$frameworkcode}->{$tag};
        if ( $field->is_control_field() ) {
            my $kohafields = $inverted_field_map->{$frameworkcode}->{$tag}->{list};
          ENTRY: foreach my $entry ( @{$kohafields} ) {
                my ( $subfield, $table, $column ) = @{$entry};
                next ENTRY unless exists $tables{$table};
                my $key = _disambiguate( $table, $column );
                if ( $result->{$key} ) {
                    unless ( ( $key eq "biblionumber" or $key eq "biblioitemnumber" ) and ( $field->data() eq "" ) ) {
                        $result->{$key} .= " | " . $field->data();
                    }
                } else {
                    $result->{$key} = $field->data();
                }
            }
        } else {

            # deal with subfields
          MARCSUBFIELD: foreach my $sf ( $field->subfields() ) {
                my $code = $sf->[0];
                next MARCSUBFIELD unless exists $inverted_field_map->{$frameworkcode}->{$tag}->{sfs}->{$code};
                my $value = $sf->[1];
              SFENTRY: foreach my $entry ( @{ $inverted_field_map->{$frameworkcode}->{$tag}->{sfs}->{$code} } ) {
                    my ( $table, $column ) = @{$entry};
                    next SFENTRY unless exists $tables{$table};
                    my $key = _disambiguate( $table, $column );
                    if ( $result->{$key} ) {
                        unless ( ( $key eq "biblionumber" or $key eq "biblioitemnumber" ) and ( $value eq "" ) ) {
                            $result->{$key} .= " | " . $value;
                        }
                    } else {
                        $result->{$key} = $value;
                    }
                }
            }
        }
    }

    # modify copyrightdate to keep only the 1st year found
    if ( exists $result->{'copyrightdate'} ) {
        my $temp = $result->{'copyrightdate'};
        $temp =~ m/c(\d\d\d\d)/;
        if ( $temp =~ m/c(\d\d\d\d)/ and $1 > 0 ) {    # search cYYYY first
            $result->{'copyrightdate'} = $1;
        } else {                                       # if no cYYYY, get the 1st date.
            $temp =~ m/(\d\d\d\d)/;
            $result->{'copyrightdate'} = $1;
        }
    }

    # modify publicationyear to keep only the 1st year found
    if ( exists $result->{'publicationyear'} ) {
        my $temp = $result->{'publicationyear'};
        if ( $temp =~ m/c(\d\d\d\d)/ and $1 > 0 ) {    # search cYYYY first
            $result->{'publicationyear'} = $1;
        } else {                                       # if no cYYYY, get the 1st date.
            $temp =~ m/(\d\d\d\d)/;
            $result->{'publicationyear'} = $1;
        }
    }

    return $result;
}

sub _get_inverted_marc_field_map {
    my $field_map = {};
    my $relations = C4::Context->marcfromkohafield;

    foreach my $frameworkcode ( keys %{$relations} ) {
        foreach my $kohafield ( keys %{ $relations->{$frameworkcode} } ) {
            next unless @{ $relations->{$frameworkcode}->{$kohafield} };    # not all columns are mapped to MARC tag & subfield
            my $tag      = $relations->{$frameworkcode}->{$kohafield}->[0];
            my $subfield = $relations->{$frameworkcode}->{$kohafield}->[1];
            my ( $table, $column ) = split /[.]/, $kohafield, 2;
            push @{ $field_map->{$frameworkcode}->{$tag}->{list} }, [ $subfield, $table, $column ];
            push @{ $field_map->{$frameworkcode}->{$tag}->{sfs}->{$subfield} }, [ $table, $column ];
        }
    }
    return $field_map;
}

=head2 _disambiguate

  $newkey = _disambiguate($table, $field);

This is a temporary hack to distinguish between the
following sets of columns when using TransformMarcToKoha.

  items.cn_source & biblioitems.cn_source
  items.cn_sort & biblioitems.cn_sort

Columns that are currently NOT distinguished (FIXME
due to lack of time to fully test) are:

  biblio.notes and biblioitems.notes
  biblionumber
  timestamp
  biblioitemnumber

FIXME - this is necessary because prefixing each column
name with the table name would require changing lots
of code and templates, and exposing more of the DB
structure than is good to the UI templates, particularly
since biblio and bibloitems may well merge in a future
version.  In the future, it would also be good to 
separate DB access and UI presentation field names
more.

=cut

sub CountItemsIssued {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $sth            = $dbh->prepare('SELECT COUNT(*) as issuedCount FROM items, issues WHERE items.itemnumber = issues.itemnumber AND items.biblionumber = ?');
    $sth->execute($biblionumber);
    my $row = $sth->fetchrow_hashref();
    return $row->{'issuedCount'};
}

sub _disambiguate {
    my ( $table, $column ) = @_;
    if ( $column eq "cn_sort" or $column eq "cn_source" ) {
        return $table . '.' . $column;
    } else {
        return $column;
    }

}

=head2 get_koha_field_from_marc

  $result->{_disambiguate($table, $field)} = 
     get_koha_field_from_marc($table,$field,$record,$frameworkcode);

Internal function to map data from the MARC record to a specific non-MARC field.
FIXME: this is meant to replace TransformMarcToKohaOneField after more testing.

=cut

sub get_koha_field_from_marc {
    my ( $koha_table, $koha_column, $record, $frameworkcode ) = @_;
    my ( $tagfield, $subfield ) = GetMarcFromKohaField( $koha_table . '.' . $koha_column, $frameworkcode );
    my $kohafield;
    foreach my $field ( $record->field($tagfield) ) {
        if ( $field->tag() < 10 ) {
            if ($kohafield) {
                $kohafield .= " | " . $field->data();
            } else {
                $kohafield = $field->data();
            }
        } else {
            if ( $field->subfields ) {
                my @subfields = $field->subfields();
                foreach my $subfieldcount ( 0 .. $#subfields ) {
                    if ( $subfields[$subfieldcount][0] eq $subfield ) {
                        if ($kohafield) {
                            $kohafield .= " | " . $subfields[$subfieldcount][1];
                        } else {
                            $kohafield = $subfields[$subfieldcount][1];
                        }
                    }
                }
            }
        }
    }
    return $kohafield;
}

=head2 TransformMarcToKohaOneField

  $result = TransformMarcToKohaOneField( $kohatable, $kohafield, $record, $result, $frameworkcode )

=cut

sub TransformMarcToKohaOneField {

    # FIXME ? if a field has a repeatable subfield that is used in old-db,
    # only the 1st will be retrieved...
    my ( $kohatable, $kohafield, $record, $result, $frameworkcode ) = @_;
    my $res = "";
    my ( $tagfield, $subfield ) = GetMarcFromKohaField( $kohatable . "." . $kohafield, $frameworkcode );
    foreach my $field ( $record->field($tagfield) ) {
        if ( $field->tag() < 10 ) {
            if ( $result->{$kohafield} ) {
                $result->{$kohafield} .= " | " . $field->data();
            } else {
                $result->{$kohafield} = $field->data();
            }
        } else {
            if ( $field->subfields ) {
                my @subfields = $field->subfields();
                foreach my $subfieldcount ( 0 .. $#subfields ) {
                    if ( $subfields[$subfieldcount][0] eq $subfield ) {
                        if ( $result->{$kohafield} ) {
                            $result->{$kohafield} .= " | " . $subfields[$subfieldcount][1];
                        } else {
                            $result->{$kohafield} = $subfields[$subfieldcount][1];
                        }
                    }
                }
            }
        }
    }
    return $result;
}


#"

#
# true ModZebra commented until indexdata fixes zebraDB crashes (it seems they occur on multiple updates
# at the same time
# replaced by a zebraqueue table, that is filled with ModZebra to run.
# the table is emptied by misc/cronjobs/zebraqueue_start.pl script
# =head2 ModZebrafiles
#
# &ModZebrafiles( $dbh, $biblionumber, $record, $folder, $server );
#
# =cut
#
# sub ModZebrafiles {
#
#     my ( $dbh, $biblionumber, $record, $folder, $server ) = @_;
#
#     my $op;
#     my $zebradir =
#       C4::Context->zebraconfig($server)->{directory} . "/" . $folder . "/";
#     unless ( opendir( DIR, "$zebradir" ) ) {
#         warn "$zebradir not found";
#         return;
#     }
#     closedir DIR;
#     my $filename = $zebradir . $biblionumber;
#
#     if ($record) {
#         open( OUTPUT, ">", $filename . ".xml" );
#         print OUTPUT $record;
#         close OUTPUT;
#     }
# }

=head2 ModZebra

  ModZebra( $biblionumber, $op, $server );

$biblionumber is the biblionumber we want to index

$op is specialUpdate or delete, and is used to know what we want to do

$server is the server that we want to update

=cut

sub ModZebra {
###Accepts a $server variable thus we can use it for biblios authorities or other zebra dbs
    my ( $biblionumber, $op, $server ) = @_;
    my $dbh = C4::Context->dbh;

    # true ModZebra commented until indexdata fixes zebraDB crashes (it seems they occur on multiple updates
    # at the same time
    # replaced by a zebraqueue table, that is filled with ModZebra to run.
    # the table is emptied by rebuild_zebra.pl script (using the -z switch)

    my $check_sql = "SELECT COUNT(*) FROM zebraqueue
                     WHERE server = ?
                     AND   biblio_auth_number = ?
                     AND   operation = ?
                     AND   done = 0";
    my $check_sth = $dbh->prepare_cached($check_sql);
    $check_sth->execute( $server, $biblionumber, $op );
    my ($count) = $check_sth->fetchrow_array;
    $check_sth->finish();
    if ( $count == 0 ) {
        my $sth = $dbh->prepare("INSERT INTO zebraqueue  (biblio_auth_number,server,operation) VALUES(?,?,?)");
        $sth->execute( $biblionumber, $server, $op );
        $sth->finish;
    }
}


=head2 EmbedItemsInMarcBiblio

    EmbedItemsInMarcBiblio($marc, $biblionumber, $itemnumbers);

Given a MARC::Record object containing a bib record,
modify it to include the items attached to it as 9XX
per the bib's MARC framework.
if $itemnumbers is defined, only specified itemnumbers are embedded

=cut

sub EmbedItemsInMarcBiblio {
    my ($marc, $biblionumber, $itemnumbers) = @_;
    if ( !$marc ) {
        carp 'EmbedItemsInMarcBiblio: No MARC record passed';
        return;
    }

    $itemnumbers = [] unless defined $itemnumbers;

    my $frameworkcode = GetFrameworkCode($biblionumber);
    _strip_item_fields($marc, $frameworkcode);

    # ... and embed the current items
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare("SELECT itemnumber FROM items WHERE biblionumber = ?");
    $sth->execute($biblionumber);
    my @item_fields;
    my ( $itemtag, $itemsubfield ) = GetMarcFromKohaField( "items.itemnumber", $frameworkcode );
    while (my ($itemnumber) = $sth->fetchrow_array) {
        next if @$itemnumbers and not grep { $_ == $itemnumber } @$itemnumbers;
        require C4::Items;
        my $item_marc = C4::Items::GetMarcItem($biblionumber, $itemnumber);
        push @item_fields, $item_marc->field($itemtag);
    }
    $marc->append_fields(@item_fields);
}

=head1 INTERNAL FUNCTIONS

=head2 _koha_marc_update_bib_ids


  _koha_marc_update_bib_ids($record, $frameworkcode, $biblionumber, $biblioitemnumber);

Internal function to add or update biblionumber and biblioitemnumber to
the MARC XML.

=cut

sub _koha_marc_update_bib_ids {
    my ( $record, $frameworkcode, $biblionumber, $biblioitemnumber ) = @_;

    # we must add bibnum and bibitemnum in MARC::Record...
    # we build the new field with biblionumber and biblioitemnumber
    # we drop the original field
    # we add the new builded field.
    my ( $biblio_tag,     $biblio_subfield )     = GetMarcFromKohaField( "biblio.biblionumber",          $frameworkcode );
    die qq{No biblionumber tag for framework "$frameworkcode"} unless $biblio_tag;
    my ( $biblioitem_tag, $biblioitem_subfield ) = GetMarcFromKohaField( "biblioitems.biblioitemnumber", $frameworkcode );
    die qq{No biblioitemnumber tag for framework "$frameworkcode"} unless $biblioitem_tag;

    if ( $biblio_tag == $biblioitem_tag ) {

        # biblionumber & biblioitemnumber are in the same field (can't be <10 as fields <10 have only 1 value)
        my $new_field = MARC::Field->new(
            $biblio_tag, '', '',
            "$biblio_subfield"     => $biblionumber,
            "$biblioitem_subfield" => $biblioitemnumber
        );

        # drop old field and create new one...
        my $old_field = $record->field($biblio_tag);
        $record->delete_field($old_field) if $old_field;
        $record->insert_fields_ordered($new_field);
    } else {

        # biblionumber & biblioitemnumber are in different fields

        # deal with biblionumber
        my ( $new_field, $old_field );
        if ( $biblio_tag < 10 ) {
            $new_field = MARC::Field->new( $biblio_tag, $biblionumber );
        } else {
            $new_field = MARC::Field->new( $biblio_tag, '', '', "$biblio_subfield" => $biblionumber );
        }

        # drop old field and create new one...
        $old_field = $record->field($biblio_tag);
        $record->delete_field($old_field) if $old_field;
        $record->insert_fields_ordered($new_field);

        # deal with biblioitemnumber
        if ( $biblioitem_tag < 10 ) {
            $new_field = MARC::Field->new( $biblioitem_tag, $biblioitemnumber, );
        } else {
            $new_field = MARC::Field->new( $biblioitem_tag, '', '', "$biblioitem_subfield" => $biblioitemnumber, );
        }

        # drop old field and create new one...
        $old_field = $record->field($biblioitem_tag);
        $record->delete_field($old_field) if $old_field;
        $record->insert_fields_ordered($new_field);
    }
}

=head2 _koha_marc_update_biblioitem_cn_sort

  _koha_marc_update_biblioitem_cn_sort($marc, $biblioitem, $frameworkcode);

Given a MARC bib record and the biblioitem hash, update the
subfield that contains a copy of the value of biblioitems.cn_sort.

=cut

sub _koha_marc_update_biblioitem_cn_sort {
    my $marc          = shift;
    my $biblioitem    = shift;
    my $frameworkcode = shift;

    my ( $biblioitem_tag, $biblioitem_subfield ) = GetMarcFromKohaField( "biblioitems.cn_sort", $frameworkcode );
    return unless $biblioitem_tag;

    my ($cn_sort) = GetClassSort( $biblioitem->{'biblioitems.cn_source'}, $biblioitem->{'cn_class'}, $biblioitem->{'cn_item'} );

    if ( my $field = $marc->field($biblioitem_tag) ) {
        $field->delete_subfield( code => $biblioitem_subfield );
        if ( $cn_sort ne '' ) {
            $field->add_subfields( $biblioitem_subfield => $cn_sort );
        }
    } else {

        # if we get here, no biblioitem tag is present in the MARC record, so
        # we'll create it if $cn_sort is not empty -- this would be
        # an odd combination of events, however
        if ($cn_sort) {
            $marc->insert_grouped_field( MARC::Field->new( $biblioitem_tag, ' ', ' ', $biblioitem_subfield => $cn_sort ) );
        }
    }
}

=head2 _koha_add_biblio

  my ($biblionumber,$error) = _koha_add_biblio($dbh,$biblioitem);

Internal function to add a biblio ($biblio is a hash with the values)

=cut

sub _koha_add_biblio {
    my ( $dbh, $biblio, $frameworkcode ) = @_;

    my $error;

    # set the series flag
    unless (defined $biblio->{'serial'}){
    	$biblio->{'serial'} = 0;
    	if ( $biblio->{'seriestitle'} ) { $biblio->{'serial'} = 1 }
    }

    my $query = "INSERT INTO biblio
        SET frameworkcode = ?,
            author = ?,
            title = ?,
            unititle =?,
            notes = ?,
            serial = ?,
            seriestitle = ?,
            copyrightdate = ?,
            datecreated=NOW(),
            abstract = ?
        ";
    my $sth = $dbh->prepare($query);
    $sth->execute(
        $frameworkcode, $biblio->{'author'},      $biblio->{'title'},         $biblio->{'unititle'}, $biblio->{'notes'},
        $biblio->{'serial'},        $biblio->{'seriestitle'}, $biblio->{'copyrightdate'}, $biblio->{'abstract'}
    );

    my $biblionumber = $dbh->{'mysql_insertid'};
    if ( $dbh->errstr ) {
        $error .= "ERROR in _koha_add_biblio $query" . $dbh->errstr;
        warn $error;
    }

    $sth->finish();

    #warn "LEAVING _koha_add_biblio: ".$biblionumber."\n";
    return ( $biblionumber, $error );
}

=head2 _koha_modify_biblio

  my ($biblionumber,$error) == _koha_modify_biblio($dbh,$biblio,$frameworkcode);

Internal function for updating the biblio table

=cut

sub _koha_modify_biblio {
    my ( $dbh, $biblio, $frameworkcode ) = @_;
    my $error;

    my $query = "
        UPDATE biblio
        SET    frameworkcode = ?,
               author = ?,
               title = ?,
               unititle = ?,
               notes = ?,
               serial = ?,
               seriestitle = ?,
               copyrightdate = ?,
               abstract = ?
        WHERE  biblionumber = ?
        "
      ;
    my $sth = $dbh->prepare($query);

    $sth->execute(
        $frameworkcode,      $biblio->{'author'},      $biblio->{'title'},         $biblio->{'unititle'}, $biblio->{'notes'},
        $biblio->{'serial'}, $biblio->{'seriestitle'}, $biblio->{'copyrightdate'}, $biblio->{'abstract'}, $biblio->{'biblionumber'}
    ) if $biblio->{'biblionumber'};

    if ( $dbh->errstr || !$biblio->{'biblionumber'} ) {
        $error .= "ERROR in _koha_modify_biblio $query" . $dbh->errstr;
        warn $error;
    }
    return ( $biblio->{'biblionumber'}, $error );
}

=head2 _koha_modify_biblioitem_nonmarc

  my ($biblioitemnumber,$error) = _koha_modify_biblioitem_nonmarc( $dbh, $biblioitem );

Updates biblioitems row except for marc and marcxml, which should be changed
via ModBiblioMarc

=cut

sub _koha_modify_biblioitem_nonmarc {
    my ( $dbh, $biblioitem ) = @_;
    my $error;

    # re-calculate the cn_sort, it may have changed
    my ($cn_sort) = GetClassSort( $biblioitem->{'biblioitems.cn_source'}, $biblioitem->{'cn_class'}, $biblioitem->{'cn_item'} );

    my $query = "UPDATE biblioitems 
    SET biblionumber    = ?,
        volume          = ?,
        number          = ?,
        itemtype        = ?,
        isbn            = ?,
        issn            = ?,
        publicationyear = ?,
        publishercode   = ?,
        volumedate      = ?,
        volumedesc      = ?,
        collectiontitle = ?,
        collectionissn  = ?,
        collectionvolume= ?,
        editionstatement= ?,
        editionresponsibility = ?,
        illus           = ?,
        pages           = ?,
        notes           = ?,
        size            = ?,
        place           = ?,
        lccn            = ?,
        url             = ?,
        cn_source       = ?,
        cn_class        = ?,
        cn_item         = ?,
        cn_suffix       = ?,
        cn_sort         = ?,
        totalissues     = ?,
        ean             = ?,
        agerestriction  = ?
        where biblioitemnumber = ?
        ";
    my $sth = $dbh->prepare($query);
    $sth->execute(
        $biblioitem->{'biblionumber'},     $biblioitem->{'volume'},           $biblioitem->{'number'},                $biblioitem->{'itemtype'},
        $biblioitem->{'isbn'},             $biblioitem->{'issn'},             $biblioitem->{'publicationyear'},       $biblioitem->{'publishercode'},
        $biblioitem->{'volumedate'},       $biblioitem->{'volumedesc'},       $biblioitem->{'collectiontitle'},       $biblioitem->{'collectionissn'},
        $biblioitem->{'collectionvolume'}, $biblioitem->{'editionstatement'}, $biblioitem->{'editionresponsibility'}, $biblioitem->{'illus'},
        $biblioitem->{'pages'},            $biblioitem->{'bnotes'},           $biblioitem->{'size'},                  $biblioitem->{'place'},
        $biblioitem->{'lccn'},             $biblioitem->{'url'},              $biblioitem->{'biblioitems.cn_source'}, $biblioitem->{'cn_class'},
        $biblioitem->{'cn_item'},          $biblioitem->{'cn_suffix'},        $cn_sort,                               $biblioitem->{'totalissues'},
        $biblioitem->{'ean'},              $biblioitem->{'agerestriction'},   $biblioitem->{'biblioitemnumber'}
    );
    if ( $dbh->errstr ) {
        $error .= "ERROR in _koha_modify_biblioitem_nonmarc $query" . $dbh->errstr;
        warn $error;
    }
    return ( $biblioitem->{'biblioitemnumber'}, $error );
}

=head2 _koha_add_biblioitem

  my ($biblioitemnumber,$error) = _koha_add_biblioitem( $dbh, $biblioitem );

Internal function to add a biblioitem

=cut

sub _koha_add_biblioitem {
    my ( $dbh, $biblioitem ) = @_;
    my $error;

    my ($cn_sort) = GetClassSort( $biblioitem->{'biblioitems.cn_source'}, $biblioitem->{'cn_class'}, $biblioitem->{'cn_item'} );
    my $query = "INSERT INTO biblioitems SET
        biblionumber    = ?,
        volume          = ?,
        number          = ?,
        itemtype        = ?,
        isbn            = ?,
        issn            = ?,
        publicationyear = ?,
        publishercode   = ?,
        volumedate      = ?,
        volumedesc      = ?,
        collectiontitle = ?,
        collectionissn  = ?,
        collectionvolume= ?,
        editionstatement= ?,
        editionresponsibility = ?,
        illus           = ?,
        pages           = ?,
        notes           = ?,
        size            = ?,
        place           = ?,
        lccn            = ?,
        marc            = ?,
        url             = ?,
        cn_source       = ?,
        cn_class        = ?,
        cn_item         = ?,
        cn_suffix       = ?,
        cn_sort         = ?,
        totalissues     = ?,
        ean             = ?,
        agerestriction  = ?
        ";
    my $sth = $dbh->prepare($query);
    $sth->execute(
        $biblioitem->{'biblionumber'},     $biblioitem->{'volume'},           $biblioitem->{'number'},                $biblioitem->{'itemtype'},
        $biblioitem->{'isbn'},             $biblioitem->{'issn'},             $biblioitem->{'publicationyear'},       $biblioitem->{'publishercode'},
        $biblioitem->{'volumedate'},       $biblioitem->{'volumedesc'},       $biblioitem->{'collectiontitle'},       $biblioitem->{'collectionissn'},
        $biblioitem->{'collectionvolume'}, $biblioitem->{'editionstatement'}, $biblioitem->{'editionresponsibility'}, $biblioitem->{'illus'},
        $biblioitem->{'pages'},            $biblioitem->{'bnotes'},           $biblioitem->{'size'},                  $biblioitem->{'place'},
        $biblioitem->{'lccn'},             $biblioitem->{'marc'},             $biblioitem->{'url'},                   $biblioitem->{'biblioitems.cn_source'},
        $biblioitem->{'cn_class'},         $biblioitem->{'cn_item'},          $biblioitem->{'cn_suffix'},             $cn_sort,
        $biblioitem->{'totalissues'},      $biblioitem->{'ean'},              $biblioitem->{'agerestriction'}
    );
    my $bibitemnum = $dbh->{'mysql_insertid'};

    if ( $dbh->errstr ) {
        $error .= "ERROR in _koha_add_biblioitem $query" . $dbh->errstr;
        warn $error;
    }
    $sth->finish();
    return ( $bibitemnum, $error );
}

=head2 _koha_delete_biblio

  $error = _koha_delete_biblio($dbh,$biblionumber);

Internal sub for deleting from biblio table -- also saves to deletedbiblio

C<$dbh> - the database handle

C<$biblionumber> - the biblionumber of the biblio to be deleted

=cut

# FIXME: add error handling

sub _koha_delete_biblio {
    my ( $dbh, $biblionumber ) = @_;

    # get all the data for this biblio
    my $sth = $dbh->prepare("SELECT * FROM biblio WHERE biblionumber=?");
    $sth->execute($biblionumber);

    if ( my $data = $sth->fetchrow_hashref ) {

        # save the record in deletedbiblio
        # find the fields to save
        my $query = "INSERT INTO deletedbiblio SET ";
        my @bind  = ();
        foreach my $temp ( keys %$data ) {
            $query .= "$temp = ?,";
            push( @bind, $data->{$temp} );
        }

        # replace the last , by ",?)"
        $query =~ s/\,$//;
        my $bkup_sth = $dbh->prepare($query);
        $bkup_sth->execute(@bind);
        $bkup_sth->finish;

        # delete the biblio
        my $sth2 = $dbh->prepare("DELETE FROM biblio WHERE biblionumber=?");
        $sth2->execute($biblionumber);
        # update the timestamp (Bugzilla 7146)
        $sth2= $dbh->prepare("UPDATE deletedbiblio SET timestamp=NOW() WHERE biblionumber=?");
        $sth2->execute($biblionumber);
        $sth2->finish;
    }
    $sth->finish;
    return;
}

=head2 _koha_delete_biblioitems

  $error = _koha_delete_biblioitems($dbh,$biblioitemnumber);

Internal sub for deleting from biblioitems table -- also saves to deletedbiblioitems

C<$dbh> - the database handle
C<$biblionumber> - the biblioitemnumber of the biblioitem to be deleted

=cut

# FIXME: add error handling

sub _koha_delete_biblioitems {
    my ( $dbh, $biblioitemnumber ) = @_;

    # get all the data for this biblioitem
    my $sth = $dbh->prepare("SELECT * FROM biblioitems WHERE biblioitemnumber=?");
    $sth->execute($biblioitemnumber);

    if ( my $data = $sth->fetchrow_hashref ) {

        # save the record in deletedbiblioitems
        # find the fields to save
        my $query = "INSERT INTO deletedbiblioitems SET ";
        my @bind  = ();
        foreach my $temp ( keys %$data ) {
            $query .= "$temp = ?,";
            push( @bind, $data->{$temp} );
        }

        # replace the last , by ",?)"
        $query =~ s/\,$//;
        my $bkup_sth = $dbh->prepare($query);
        $bkup_sth->execute(@bind);
        $bkup_sth->finish;

        # delete the biblioitem
        my $sth2 = $dbh->prepare("DELETE FROM biblioitems WHERE biblioitemnumber=?");
        $sth2->execute($biblioitemnumber);
        # update the timestamp (Bugzilla 7146)
        $sth2= $dbh->prepare("UPDATE deletedbiblioitems SET timestamp=NOW() WHERE biblioitemnumber=?");
        $sth2->execute($biblioitemnumber);
        $sth2->finish;
    }
    $sth->finish;
    return;
}

=head1 UNEXPORTED FUNCTIONS

=head2 ModBiblioMarc

  &ModBiblioMarc($newrec,$biblionumber,$frameworkcode);

Add MARC data for a biblio to koha 

Function exported, but should NOT be used, unless you really know what you're doing

=cut

sub ModBiblioMarc {
    # pass the MARC::Record to this function, and it will create the records in
    # the marc field
    my ( $record, $biblionumber, $frameworkcode ) = @_;
    if ( !$record ) {
        carp 'ModBiblioMarc passed an undefined record';
        return;
    }

    # Clone record as it gets modified
    $record = $record->clone();
    my $dbh    = C4::Context->dbh;
    my @fields = $record->fields();
    if ( !$frameworkcode ) {
        $frameworkcode = "";
    }
    my $sth = $dbh->prepare("UPDATE biblio SET frameworkcode=? WHERE biblionumber=?");
    $sth->execute( $frameworkcode, $biblionumber );
    $sth->finish;
    my $encoding = C4::Context->preference("marcflavour");

    # deal with UNIMARC field 100 (encoding) : create it if needed & set encoding to unicode
    if ( $encoding eq "UNIMARC" ) {
	my $defaultlanguage = C4::Context->preference("UNIMARCField100Language");
        $defaultlanguage = "fre" if (!$defaultlanguage || length($defaultlanguage) != 3);
        my $string = $record->subfield( 100, "a" );
        if ( ($string) && ( length( $record->subfield( 100, "a" ) ) == 36 ) ) {
            my $f100 = $record->field(100);
            $record->delete_field($f100);
        } else {
            $string = POSIX::strftime( "%Y%m%d", localtime );
            $string =~ s/\-//g;
            $string = sprintf( "%-*s", 35, $string );
	    substr ( $string, 22, 3, $defaultlanguage);
        }
        substr( $string, 25, 3, "y50" );
        unless ( $record->subfield( 100, "a" ) ) {
            $record->insert_fields_ordered( MARC::Field->new( 100, "", "", "a" => $string ) );
        }
    }

    #enhancement 5374: update transaction date (005) for marc21/unimarc
    if($encoding =~ /MARC21|UNIMARC/) {
      my @a= (localtime) [5,4,3,2,1,0]; $a[0]+=1900; $a[1]++;
        # YY MM DD HH MM SS (update year and month)
      my $f005= $record->field('005');
      $f005->update(sprintf("%4d%02d%02d%02d%02d%04.1f",@a)) if $f005;
    }

    $sth = $dbh->prepare("UPDATE biblioitems SET marc=?,marcxml=? WHERE biblionumber=?");
    $sth->execute( $record->as_usmarc(), $record->as_xml_record($encoding), $biblionumber );
    $sth->finish;
    ModZebra( $biblionumber, "specialUpdate", "biblioserver" );
    return $biblionumber;
}

=head2 get_biblio_authorised_values

find the types and values for all authorised values assigned to this biblio.

parameters:
    biblionumber
    MARC::Record of the bib

returns: a hashref mapping the authorised value to the value set for this biblionumber

  $authorised_values = {
                       'Scent'     => 'flowery',
                       'Audience'  => 'Young Adult',
                       'itemtypes' => 'SER',
                        };

Notes: forlibrarian should probably be passed in, and called something different.

=cut

sub get_biblio_authorised_values {
    my $biblionumber = shift;
    my $record       = shift;

    my $forlibrarian  = 1;                                 # are we in staff or opac?
    my $frameworkcode = GetFrameworkCode($biblionumber);

    my $authorised_values;

    my $tagslib = GetMarcStructure( $forlibrarian, $frameworkcode )
      or return $authorised_values;

    # assume that these entries in the authorised_value table are bibliolevel.
    # ones that start with 'item%' are item level.
    my $query = q(SELECT distinct authorised_value, kohafield
                    FROM marc_subfield_structure
                    WHERE authorised_value !=''
                      AND (kohafield like 'biblio%'
                       OR  kohafield like '') );
    my $bibliolevel_authorised_values = C4::Context->dbh->selectall_hashref( $query, 'authorised_value' );

    foreach my $tag ( keys(%$tagslib) ) {
        foreach my $subfield ( keys( %{ $tagslib->{$tag} } ) ) {

            # warn "checking $subfield. type is: " . ref $tagslib->{ $tag }{ $subfield };
            if ( 'HASH' eq ref $tagslib->{$tag}{$subfield} ) {
                if ( defined $tagslib->{$tag}{$subfield}{'authorised_value'} && exists $bibliolevel_authorised_values->{ $tagslib->{$tag}{$subfield}{'authorised_value'} } ) {
                    if ( defined $record->field($tag) ) {
                        my $this_subfield_value = $record->field($tag)->subfield($subfield);
                        if ( defined $this_subfield_value ) {
                            $authorised_values->{ $tagslib->{$tag}{$subfield}{'authorised_value'} } = $this_subfield_value;
                        }
                    }
                }
            }
        }
    }

    # warn ( Data::Dumper->Dump( [ $authorised_values ], [ 'authorised_values' ] ) );
    return $authorised_values;
}

=head2 CountBiblioInOrders

=over 4
$count = &CountBiblioInOrders( $biblionumber);

=back

This function return count of biblios in orders with $biblionumber 

=cut

sub CountBiblioInOrders {
 my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $query          = "SELECT count(*)
          FROM  aqorders 
          WHERE biblionumber=? AND (datecancellationprinted IS NULL OR datecancellationprinted='0000-00-00')";
    my $sth = $dbh->prepare($query);
    $sth->execute($biblionumber);
    my $count = $sth->fetchrow;
    return ($count);
}

=head2 GetSubscriptionsId

=over 4
$subscriptions = &GetSubscriptionsId($biblionumber);

=back

This function return an array of subscriptionid with $biblionumber

=cut

sub GetSubscriptionsId {
 my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $query          = "SELECT subscriptionid
          FROM  subscription
          WHERE biblionumber=?";
    my $sth = $dbh->prepare($query);
    $sth->execute($biblionumber);
    my @subscriptions = $sth->fetchrow_array;
    return (@subscriptions);
}

=head2 GetHolds

=over 4
$holds = &GetHolds($biblionumber);

=back

This function return the count of holds with $biblionumber

=cut

sub GetHolds {
 my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $query          = "SELECT count(*)
          FROM  reserves
          WHERE biblionumber=?";
    my $sth = $dbh->prepare($query);
    $sth->execute($biblionumber);
    my $holds = $sth->fetchrow;
    return ($holds);
}

=head2 prepare_host_field

$marcfield = prepare_host_field( $hostbiblioitem, $marcflavour );
Generate the host item entry for an analytic child entry

=cut

sub prepare_host_field {
    my ( $hostbiblio, $marcflavour ) = @_;
    $marcflavour ||= C4::Context->preference('marcflavour');
    my $host = GetMarcBiblio($hostbiblio);
    # unfortunately as_string does not 'do the right thing'
    # if field returns undef
    my %sfd;
    my $field;
    my $host_field;
    if ( $marcflavour eq 'MARC21' || $marcflavour eq 'NORMARC' ) {
        if ( $field = $host->field('100') || $host->field('110') || $host->field('11') ) {
            my $s = $field->as_string('ab');
            if ($s) {
                $sfd{a} = $s;
            }
        }
        if ( $field = $host->field('245') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{t} = $s;
            }
        }
        if ( $field = $host->field('260') ) {
            my $s = $field->as_string('abc');
            if ($s) {
                $sfd{d} = $s;
            }
        }
        if ( $field = $host->field('240') ) {
            my $s = $field->as_string();
            if ($s) {
                $sfd{b} = $s;
            }
        }
        if ( $field = $host->field('022') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{x} = $s;
            }
        }
        if ( $field = $host->field('020') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{z} = $s;
            }
        }
        if ( $field = $host->field('001') ) {
            $sfd{w} = $field->data(),;
        }
        $host_field = MARC::Field->new( 773, '0', ' ', %sfd );
        return $host_field;
    }
    elsif ( $marcflavour eq 'UNIMARC' ) {
        #author
        if ( $field = $host->field('700') || $host->field('710') || $host->field('720') ) {
            my $s = $field->as_string('ab');
            if ($s) {
                $sfd{a} = $s;
            }
        }
        #title
        if ( $field = $host->field('200') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{t} = $s;
            }
        }
        #place of publicaton
        if ( $field = $host->field('210') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{c} = $s;
            }
        }
        #date of publication
        if ( $field = $host->field('210') ) {
            my $s = $field->as_string('d');
            if ($s) {
                $sfd{d} = $s;
            }
        }
        #edition statement
        if ( $field = $host->field('205') ) {
            my $s = $field->as_string();
            if ($s) {
                $sfd{a} = $s;
            }
        }
        #URL
        if ( $field = $host->field('856') ) {
            my $s = $field->as_string('u');
            if ($s) {
                $sfd{u} = $s;
            }
        }
        #ISSN
        if ( $field = $host->field('011') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{x} = $s;
            }
        }
        #ISBN
        if ( $field = $host->field('010') ) {
            my $s = $field->as_string('a');
            if ($s) {
                $sfd{y} = $s;
            }
        }
        if ( $field = $host->field('001') ) {
            $sfd{0} = $field->data(),;
        }
        $host_field = MARC::Field->new( 461, '0', ' ', %sfd );
        return $host_field;
    }
    return;
}


=head2 UpdateTotalIssues

  UpdateTotalIssues($biblionumber, $increase, [$value])

Update the total issue count for a particular bib record.

=over 4

=item C<$biblionumber> is the biblionumber of the bib to update

=item C<$increase> is the amount to increase (or decrease) the total issues count by

=item C<$value> is the absolute value that total issues count should be set to. If provided, C<$increase> is ignored.

=back

=cut

sub UpdateTotalIssues {
    my ($biblionumber, $increase, $value) = @_;
    my $totalissues;

    my $record = GetMarcBiblio($biblionumber);
    unless ($record) {
        carp "UpdateTotalIssues could not get biblio record";
        return;
    }
    my $data = GetBiblioData($biblionumber);
    unless ($data) {
        carp "UpdateTotalIssues could not get datas of biblio";
        return;
    }
    my ($totalissuestag, $totalissuessubfield) = GetMarcFromKohaField('biblioitems.totalissues', $data->{'frameworkcode'});
    unless ($totalissuestag) {
        return 1; # There is nothing to do
    }

    if (defined $value) {
        $totalissues = $value;
    } else {
        $totalissues = $data->{'totalissues'} + $increase;
    }

     my $field = $record->field($totalissuestag);
     if (defined $field) {
         $field->update( $totalissuessubfield => $totalissues );
     } else {
         $field = MARC::Field->new($totalissuestag, '0', '0',
                 $totalissuessubfield => $totalissues);
         $record->insert_grouped_field($field);
     }

     return ModBiblio($record, $biblionumber, $data->{'frameworkcode'});
}

=head2 RemoveAllNsb

    &RemoveAllNsb($record);

Removes all nsb/nse chars from a record

=cut

sub RemoveAllNsb {
    my $record = shift;
    if (!$record) {
        carp 'RemoveAllNsb called with undefined record';
        return;
    }

    SetUTF8Flag($record);

    foreach my $field ($record->fields()) {
        if ($field->is_control_field()) {
            $field->update(nsb_clean($field->data()));
        } else {
            my @subfields = $field->subfields();
            my @new_subfields;
            foreach my $subfield (@subfields) {
                push @new_subfields, $subfield->[0] => nsb_clean($subfield->[1]);
            }
            if (scalar(@new_subfields) > 0) {
                my $new_field;
                eval {
                    $new_field = MARC::Field->new(
                        $field->tag(),
                        $field->indicator(1),
                        $field->indicator(2),
                        @new_subfields
                    );
                };
                if ($@) {
                    warn "error in RemoveAllNsb : $@";
                } else {
                    $field->replace_with($new_field);
                }
            }
        }
    }

    return $record;
}

1;


__END__

=head1 AUTHOR

Koha Development Team <http://koha-community.org/>

Paul POULAIN paul.poulain@free.fr

Joshua Ferraro jmf@liblime.com

=cut