webgui/lib/WebGUI/Shop/Ship.pm
2008-03-06 17:44:34 +00:00

179 lines
5.1 KiB
Perl

package WebGUI::Shop::Ship;
use strict;
use WebGUI::International;
use WebGUI::Shop::ShipDriver;
use WebGUI::Pluggable;
use WebGUI::Utility;
use WebGUI::Exception;
=head1 NAME
Package WebGUI::Shop::Ship
=head1 DESCRIPTION
This is the master class to manage ship drivers.
=head1 SYNOPSIS
use WebGUI::Shop::Ship;
=head1 METHODS
These subroutines are available from this package:
=cut
#-------------------------------------------------------------------
=head2 create ( $session, $class, $options )
The interface method for creating new, configured instances of ShipDriver. If the ShipperDriver throws an exception, it is propagated
back up to the top.
=head3 $session
A WebGUI::Session object.
=head4 $class
The class of the new ShipDriver object to create.
=head4 $options
A list of properties to assign to this ShipperDriver. See C<definition> for details.
=cut
sub create {
my $class = shift;
my $session = shift;
WebGUI::Error::InvalidParam->throw(error => q{Must provide a session variable})
unless ref $session eq 'WebGUI::Session';
my $requestedClass = shift;
WebGUI::Error::InvalidParam->throw(error => q{Must provide a class to create an object})
unless defined $requestedClass;
WebGUI::Error::InvalidParam->throw(error => q{The requested class is not enabled in your WebGUI configuration file}, param => $requestedClass)
unless isIn($requestedClass, @{ WebGUI::Shop::Ship->getDrivers($session) } );
my $options = shift;
WebGUI::Error::InvalidParam->throw(error => q{You must pass a hashref of options to create a new ShipDriver object})
unless defined($options) and ref $options eq 'HASH' and scalar keys %{ $options };
my $driver = eval { WebGUI::Pluggable::instanciate($requestedClass, 'create', [ $session, $options ]) };
return $driver;
}
#-------------------------------------------------------------------
=head2 getDrivers ( $session )
This subroutine returns an arrayref of available shipping driver classes
from the WebGUI config file.
=head3 $session
A WebGUI::Session object. A WebGUI::Error::InvalidParam exception will be thrown if it doesn't get one.
=cut
sub getDrivers {
my $class = shift;
my $session = shift;
WebGUI::Error::InvalidParam->throw(error => q{Must provide a session variable})
unless ref $session eq 'WebGUI::Session';
return $session->config->get('shippingDrivers');
}
#-------------------------------------------------------------------
=head2 getOptions ( $cart )
Returns a list of options for the user to ship, along with the cost of using each one. It is a hash of hashrefs,
with the key of the primary hash being the shipperId of the driver, and sub keys of label and price.
=head3 $cart
A WebGUI::Shop::Cart object. A WebGUI::Error::InvalidParam exception will be thrown if it doesn't get one.
=head3
=cut
sub getOptions {
my ($class, $cart) = @_;
WebGUI::Error::InvalidParam->throw(error => q{Need a cart.}) unless defined $cart and $cart->isa("WebGUI::Shop::Cart");
my $session = $cart->session;
my %options = ();
foreach my $shipper (@{$class->getShippers($session)}) {
$options{$shipper->getId} = {
label => $shipper->get("label"),
price => $shipper->calculate($cart),
};
}
return \%options;
}
#-------------------------------------------------------------------
=head2 getShippers ( $session )
Returns an array ref of all shipping objects in the db.
=head3 $session
A WebGUI::Session object. A WebGUI::Error::InvalidParam exception will be thrown if it doesn't get one.
=head3
=cut
sub getShippers {
my $class = shift;
my $session = shift;
WebGUI::Error::InvalidParam->throw(error => q{Must provide a session variable})
unless ref $session eq 'WebGUI::Session';
my @drivers = ();
my $sth = $session->db->prepare('select shipperId from shipper');
$sth->execute();
while (my $driver = $sth->hashRef()) {
push @drivers, WebGUI::Shop::Ship->new($session, $driver->{shipperId});
}
$sth->finish;
return \@drivers;
}
#-------------------------------------------------------------------
=head2 new ( $session, $shipperId )
Looks up an existing ShipperDriver in the db by shipperId and returns
that object. If the ShipperDriver throws an exception, it is propagated
back up to the top.
=head3 $session
A WebGUI::Session object.
=head3 $shipperId
The ID of a shipper to look up and instanciate.
=cut
sub new {
my $class = shift;
my $session = shift;
WebGUI::Error::InvalidParam->throw(error => q{Must provide a session variable})
unless ref $session eq 'WebGUI::Session';
my $shipperId = shift;
WebGUI::Error::InvalidParam->throw(error => q{Must provide a shipperId})
unless defined $shipperId;
my $requestedClass = $session->db->quickScalar('select className from shipper where shipperId=?',[$shipperId]);
WebGUI::Error::ObjectNotFound->throw(error => q{shipperId not found in db}, id => $shipperId)
unless $requestedClass;
my $driver = eval { WebGUI::Pluggable::instanciate($requestedClass, 'new', [ $session, $shipperId ]) };
return $driver;
}
1;