#
# ILS::Item.pm
# 
# A Class for hiding the ILS's concept of the item from the OpenSIP
# system
#

package ILS::Item;

use strict;
use warnings;

use Sys::Syslog qw(syslog);

use ILS::Transaction;

use C4::Biblio;
use C4::Circulation;
use C4::Members;

our %item_db = (
		'1565921879' => {
				 title => "Perl 5 desktop reference",
				 id => '1565921879',
				 sip_media_type => '001',
				 magnetic_media => 0,
				 hold_queue => [],
				},
		'0440242746' => {
				 title => "The deep blue alibi",
				 id => '0440242746',
				 sip_media_type => '001',
				 magnetic_media => 0,
				 hold_queue => [],
		},
		'660' => {
				 title => "Harry Potter y el cáliz de fuego",
				 id => '660',
				 sip_media_type => '001',
				 magnetic_media => 0,
				 hold_queue => [],
			 },
		);

sub new {
    my ($class, $item_id) = @_;
    my $type = ref($class) || $class;
    my $self;
	my $item = GetBiblioFromItemNumber( GetItemnumberFromBarcode($item_id) );
	
    if (! $item) {
		syslog("LOG_DEBUG", "new ILS::Item('%s'): not found", $item_id);
		warn "no item $item_id";
		return undef;
    }
    $item->{'id'} = $item->{'barcode'};
	# check if its on issue and if so get the borrower
	my $issue = GetItemIssue($item->{'itemnumber'});
	my $borrower = GetMember($issue->{'borrowernumber'},'borrowernumber');
	$item->{patron} = $borrower->{'cardnumber'};
    $self = $item;

    bless $self, $type;

    syslog("LOG_DEBUG", "new ILS::Item('%s'): found with title '%s'",
	   $item_id, $self->{title});

    return $self;
}

sub magnetic {
    my $self = shift;

    return $self->{magnetic_media};
}

sub sip_media_type {
    my $self = shift;

    return $self->{sip_media_type};
}

sub sip_item_properties {
    my $self = shift;

    return $self->{sip_item_properties};
}

sub status_update {
    my ($self, $props) = @_;
    my $status = new ILS::Transaction;

    $self->{sip_item_properties} = $props;
    $status->{ok} = 1;

    return $status;
}

    
sub id {
    my $self = shift;

    return $self->{id};
}

sub title_id {
    my $self = shift;

    return $self->{title};
}

sub permanent_location {
    my $self = shift;

    return $self->{permanent_location} || '';
}

sub current_location {
    my $self = shift;

    return $self->{current_location} || '';
}

sub sip_circulation_status {
    my $self = shift;

    if ($self->{patron}) {
	return '04';
    } elsif (scalar @{$self->{hold_queue}}) {
	return '08';
    } else {
	return '03';
    }
}

sub sip_security_marker {
    return '02';
}

sub sip_fee_type {
    return '01';
}

sub fee {
    my $self = shift;

    return $self->{fee} || 0;
}

sub fee_currency {
    my $self = shift;

    return $self->{currency} || 'CAD';
}

sub owner {
    my $self = shift;

    return 'UWOLS';
}

sub hold_queue {
    my $self = shift;

    return $self->{hold_queue};
}

sub hold_queue_position {
    my ($self, $patron_id) = @_;
    my $i;

    for ($i = 0; $i < scalar @{$self->{hold_queue}}; $i += 1) {
	if ($self->{hold_queue}[$i]->{patron_id} eq $patron_id) {
	    return $i + 1;
	}
    }
    return 0;
}

sub due_date {
    my $self = shift;

    return $self->{due_date} || 0;
}

sub recall_date {
    my $self = shift;

    return $self->{recall_date} || 0;
}

sub hold_pickup_date {
    my $self = shift;

    return $self->{hold_pickup_date} || 0;
}

sub screen_msg {
    my $self = shift;

    return $self->{screen_msg} || '';
}

sub print_line {
     my $self = shift;

     return $self->{print_line} || '';
}

# An item is available for a patron if
# 1) It's not checked out and (there's no hold queue OR patron
#    is at the front of the queue)
# OR
# 2) It's checked out to the patron and there's no hold queue
sub available {
     my ($self, $for_patron) = @_;

     return ((!defined($self->{patron_id}) && (!scalar @{$self->{hold_queue}}
					       || ($self->{hold_queue}[0] eq $for_patron)))
	     || ($self->{patron_id} && ($self->{patron_id} eq $for_patron)
		 && !scalar @{$self->{hold_queue}}));
}

1;