Koha/C4/Circulation/Renewals2.pm

303 lines
9 KiB
Perl
Executable file

package C4::Circulation::Renewals2;
# $Id$
#package to deal with Renewals
#written 7/11/99 by olwen@katipo.co.nz
#modified by chris@katipo.co.nz
#18/1/2000
#need to update stats with renewals
# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use strict;
require Exporter;
use DBI;
use C4::Stats;
use C4::Accounts2;
use C4::Circulation::Circ2;
use vars qw($VERSION @ISA @EXPORT);
# set the version for version checking
$VERSION = 0.01;
=head1 NAME
C4::Circulation::Renewals2 - Koha functions for renewals
=head1 SYNOPSIS
use C4::Circulation::Renewals2;
=head1 DESCRIPTION
This module provides a few functions for handling loan renewals.
=head1 FUNCTIONS
=over 2
=cut
@ISA = qw(Exporter);
@EXPORT = qw(&renewstatus &renewbook &calc_charges);
=item renewstatus
$ok = &renewstatus($env, $dbh, $borrowernumber, $itemnumber);
Find out whether a borrowed item may be renewed.
C<$env> is ignored.
C<$dbh> is a DBI handle to the Koha database.
C<$borrowernumber> is the borrower number of the patron who currently
has the item on loan.
C<$itemnumber> is the number of the item to renew.
C<$renewstatus> returns a true value iff the item may be renewed. The
item must currently be on loan to the specified borrower; renewals
must be allowed for the item's type; and the borrower must not have
already renewed the loan.
=cut
#'
# FIXME - This is virtually identical to
# &C4::Circulation::Circ2::renewstatus and
# &C4::Circulation::Renewals::renewstatus. Pick one and stick with it.
sub renewstatus {
# check renewal status
# FIXME - Two people can't borrow the same book at once, so
# presumably we can get $bornum from $itemno.
my ($env,$bornum,$itemno)=@_;
my $dbh = C4::Context->dbh;
my $renews = 1;
my $renewokay = 0;
# Look in the issues table for this item, lent to this borrower,
# and not yet returned.
# FIXME - I think this function could be redone to use only one SQL
# call.
my $q1 = "select * from issues
where (borrowernumber = '$bornum')
and (itemnumber = '$itemno')
and returndate is null";
my $sth1 = $dbh->prepare($q1);
$sth1->execute;
if (my $data1 = $sth1->fetchrow_hashref) {
# Found a matching item
# See if this item may be renewed. This query is convoluted
# because it's a bit messy: given the item number, we need to find
# the biblioitem, which gives us the itemtype, which tells us
# whether it may be renewed.
my $q2 = "select renewalsallowed from items,biblioitems,itemtypes
where (items.itemnumber = '$itemno')
and (items.biblioitemnumber = biblioitems.biblioitemnumber)
and (biblioitems.itemtype = itemtypes.itemtype)";
my $sth2 = $dbh->prepare($q2);
$sth2->execute;
if (my $data2=$sth2->fetchrow_hashref) {
$renews = $data2->{'renewalsallowed'};
}
if ($renews > $data1->{'renewals'}) {
$renewokay = 1;
}
$sth2->finish;
}
$sth1->finish;
return($renewokay);
}
=item renewbook
&renewbook($env, $borrowernumber, $itemnumber, $datedue);
Renews a loan.
C<$env-E<gt>{branchcode}> is the code of the branch where the
renewal is taking place.
C<$env-E<gt>{usercode}> is the value to log in C<statistics.usercode>
in the Koha database.
C<$borrowernumber> is the borrower number of the patron who currently
has the item.
C<$itemnumber> is the number of the item to renew.
C<$datedue> can be used to set the due date. If C<$datedue> is the
empty string, C<&renewbook> will calculate the due date automatically
from the book's item type. If you wish to set the due date manually,
C<$datedue> should be in the form YYYY-MM-DD.
=cut
#'
# FIXME - A simpler version of this function appears in
# C4::Circulation::Renewals. Pick one and stick with it.
# There's also a &C4::Circulation::Circ2::renewbook.
# I think this function is only used in 'renewscript.pl'.
sub renewbook {
# mark book as renewed
# FIXME - A book can't be on loan to two people at once, so
# presumably we can get $bornum from $itemno.
my ($env,$bornum,$itemno,$datedue)=@_;
my $dbh = C4::Context->dbh;
# If the due date wasn't specified, calculate it by adding the
# book's loan length to today's date.
if ($datedue eq "" ) {
#debug_msg($env, "getting date");
my $loanlength=21; # Default loan length?
# FIXME - This is bogus. If there's no
# loan length defined for some book
# type or whatever, then that should
# be an error
# Find this item's item type, via its biblioitem.
my $query= "Select * from biblioitems,items,itemtypes
where (items.itemnumber = '$itemno')
and (biblioitems.biblioitemnumber = items.biblioitemnumber)
and (biblioitems.itemtype = itemtypes.itemtype)";
my $sth=$dbh->prepare($query);
$sth->execute;
if (my $data=$sth->fetchrow_hashref) {
$loanlength = $data->{'loanlength'}
}
$sth->finish;
my $ti = time; # FIXME - Unused
# FIXME - Use
# POSIX::strftime("%Y-%m-%d", localtime(time + ...));
my $datedu = time + ($loanlength * 86400);
my @datearr = localtime($datedu);
$datedue = (1900+$datearr[5])."-".($datearr[4]+1)."-".$datearr[3];
}
# Find the issues record for this book
my $issquery = "select * from issues where borrowernumber='$bornum' and
itemnumber='$itemno' and returndate is null";
my $sth=$dbh->prepare($issquery);
$sth->execute;
my $issuedata=$sth->fetchrow_hashref;
# FIXME - Error-checking
$sth->finish;
# Update the issues record to have the new due date, and a new count
# of how many times it has been renewed.
my $renews = $issuedata->{'renewals'} +1;
my $updquery = "update issues
set date_due = '$datedue', renewals = '$renews'
where borrowernumber='$bornum' and
itemnumber='$itemno' and returndate is null";
# FIXME - Use $dbh->do()
$sth=$dbh->prepare($updquery);
$sth->execute;
$sth->finish;
# Log the renewal
UpdateStats($env,$env->{'branchcode'},'renew','','',$itemno);
# Charge a new rental fee, if applicable?
my ($charge,$type)=calc_charges($env, $itemno, $bornum);
if ($charge > 0){
my $accountno=getnextacctno($env,$bornum,$dbh);
my $item=getiteminformation($env, $itemno);
$sth=$dbh->prepare("Insert into accountlines (borrowernumber,accountno,date,amount,description,accounttype,amountoutstanding,itemnumber)
values (?,?,now(),?,?,?,?,?)");
$sth->execute($bornum,$accountno,$charge,"Renewal of Rental Item $item->{'title'} $item->{'barcode'}",'Rent',$charge,$itemno);
$sth->finish;
# print $account;
}
# return();
}
=item calc_charges
($charge, $item_type) = &calc_charges($env, $itemnumber, $borrowernumber);
Calculate how much it would cost for a given patron to borrow a given
item, including any applicable discounts.
C<$env> is ignored.
C<$itemnumber> is the item number of item the patron wishes to borrow.
C<$borrowernumber> is the patron's borrower number.
C<&calc_charges> returns two values: C<$charge> is the rental charge,
and C<$item_type> is the code for the item's item type (e.g., C<VID>
if it's a video).
=cut
#'
# FIXME - This is very similar to
# &C4::Circulation::Issues::calc_charges and
# &C4::Circulation::Circ2::calc_charges.
# Pick one and stick with it.
sub calc_charges {
# calculate charges due
my ($env, $itemno, $bornum)=@_;
my $charge=0;
my $dbh = C4::Context->dbh;
my $item_type;
# Get the book's item type and rental charge (via its biblioitem).
my $sth1= $dbh->prepare("select itemtypes.itemtype,rentalcharge from items,biblioitems,itemtypes
where (items.itemnumber =?)
and (biblioitems.biblioitemnumber = items.biblioitemnumber)
and (biblioitems.itemtype = itemtypes.itemtype)");
$sth1->execute($itemno);
# FIXME - Why not just use fetchrow_array?
if (my $data1=$sth1->fetchrow_hashref) {
$item_type = $data1->{'itemtype'};
$charge = $data1->{'rentalcharge'};
# Figure out the applicable rental discount
my $q2 = "select rentaldiscount from
borrowers,categoryitem
where (borrowers.borrowernumber = '$bornum')
and (borrowers.categorycode = categoryitem.categorycode)
and (categoryitem.itemtype = '$item_type')";
my $sth2=$dbh->prepare($q2);
$sth2->execute;
if (my$data2=$sth2->fetchrow_hashref) {
my $discount = $data2->{'rentaldiscount'};
$charge *= (100 - $discount) / 100;
}
$sth2->finish;
}
$sth1->finish;
# print "item $item_type";
return ($charge,$item_type);
}
1;
__END__
=back
=head1 AUTHOR
Koha Developement team <info@koha.org>
=cut