webgui/lib/WebGUI/Shop/Credit.pm

234 lines
5.9 KiB
Perl

package WebGUI::Shop::Credit;
use strict;
use Class::InsideOut qw{ :std };
use WebGUI::Shop::Admin;
use WebGUI::Exception::Shop;
use WebGUI::International;
use WebGUI::HTMLForm;
use WebGUI::User;
=head1 NAME
Package WebGUI::Shop::Credit
=head1 DESCRIPTION
Keeps track of what in-store credit is owed a customer. All refunds are issued as in-store credit.
=head1 SYNOPSIS
use WebGUI::Shop::Credit;
my $credit = WebGUI::Shop::Credit->new($session, $userId);
=head1 METHODS
These subroutines are available from this package:
=cut
readonly session => my %session;
readonly userId => my %userId;
#-------------------------------------------------------------------
=head2 adjust ( amount, [ comment ] )
Adjusts the amount of credit this user has by a specified amount.
=head3 amount
The amount to adjust the credit by. A positive number adds credit, and a negative number removes credit.
=head3 comment
The reason for this adjustment.
=cut
sub adjust {
my ($self, $amount, $comment) = @_;
my $user = WebGUI::User->new($self->session, $self->userId);
return 0 if $user->isVisitor;
$self->session->db->write("insert into shopCredit (creditId, userId, amount, comment, dateOfAdjustment) values (?,?,?,?,now())",
[$self->session->id->generate, $self->userId, $amount, $comment]);
return $amount;
}
#-------------------------------------------------------------------
=head2 calculateDeduction ( amount )
Returns the amount that a user's in-store credit could reduce a sale. Useful in calculating checkout prices.
=head3 amount
The amount of the sale before in-store credit is applied.
=cut
sub calculateDeduction {
my ($self, $amount) = @_;
my $credit = $self->getSum;
my $deduction = ($credit > $amount) ? $amount : $credit;
$deduction *= -1;
return sprintf("%.2f", $deduction);
}
#-------------------------------------------------------------------
=head2 getGeneralLedger ( session )
A class method. Returns a WebGUI::SQL::ResultSet containing the data from the shopCredit table for all users.
=head3 session
A reference to the current session.
=cut
sub getGeneralLedger {
my ($class, $session) = @_;
return $session->db->read("select * from shopCredit order by dateOfAdjustment");
}
#-------------------------------------------------------------------
=head2 getLedger ()
Returns a WebGUI::SQL::ResultSet containing the data from the shopCredit table for this user.
=cut
sub getLedger {
my $self = shift;
return $self->session->db->read("select * from shopCredit where userId=?",[$self->userId]);
}
#-------------------------------------------------------------------
=head2 getSum ()
Returns the amount of credit that is owed to this user.
=cut
sub getSum {
my $self = shift;
my $credit = $self->session->db->quickScalar("select sum(amount) from shopCredit where userId=?",[$self->userId]);
return sprintf("%.2f", $credit);
}
#-------------------------------------------------------------------
=head2 new ( session, [ userId ] )
Constructor.
=head3 session
A reference to the current session.
=head3 userId
A unique id for a user that you want to adjust the credit of. Defaults to the current user.
=cut
sub new {
my ($class, $session, $userId) = @_;
unless (defined $session && $session->isa("WebGUI::Session")) {
WebGUI::Error::InvalidObject->throw(expected=>"WebGUI::Session", got=>(ref $session), error=>"Need a session.");
}
unless (defined $userId) {
$userId = $session->user->userId;
}
my $self = register $class;
my $id = id $self;
$session{ $id } = $session;
$userId{ $id } = $userId;
return $self;
}
#-------------------------------------------------------------------
=head2 session ()
Returns a reference to the current session.
=cut
#-------------------------------------------------------------------
=head2 userId ()
Returns a reference to the userId.
=cut
#-------------------------------------------------------------------
=head2 www_adjust
Adjust credit for a user.
=cut
sub www_adjust {
my ($class, $session) = @_;
my $admin = WebGUI::Shop::Admin->new($session);
return $session->privilege->insufficient() unless $admin->canManage;
my $form = $session->form;
my $credit = $class->new($session, $form->get('userId'));
my $amount = $credit->adjust($form->get('amount'), $form->get('comment'));
my $i18n = WebGUI::International->new($session, "Shop");
my $message = sprintf $i18n->get('add credit message'), $amount, WebGUI::User->new($session, $form->get('userId'))->username, $credit->getSum;
return $class->www_manage($session, $message);
}
#-------------------------------------------------------------------
=head2 www_manage
Displays a credit management interface.
=cut
sub www_manage {
my ($class, $session, $message) = @_;
my $admin = WebGUI::Shop::Admin->new($session);
return $session->privilege->insufficient() unless $admin->canManage;
my $i18n = WebGUI::International->new($session, "Shop");
my $f = WebGUI::HTMLForm->new($session);
my $userId = $session->form->process('userId') || $session->user->userId;
my $user = WebGUI::User->new($session, $userId);
$f->hidden(name => 'shop', value => 'credit');
$f->hidden(name => 'method', value => 'adjust');
$f->user(
name => 'userId',
label => $i18n->get('username'),
value => $userId,
);
$f->float(
name => 'amount',
label => $i18n->get('amount'),
);
$f->text(
name => 'comment',
label => $i18n->get('notes'),
);
$f->submit;
if (! $message) {
my $credit = $class->new($session, $userId);
$message ||= sprintf $i18n->get('current credit message'), $user->username, $credit->getSum;
}
return $admin->getAdminConsole->render($message.$f->print, $i18n->get('in shop credit'));
}
1;