# oo.t

use strict;
use warnings;
use lib '.';
use Test::More;

use_ok 'Service', 'Service.pl loads';

my $xml = Service->new_by_name('xml', 'xmldata');
$xml->populate;
is $xml->template, '<data>xmldata</data>', 'XML OK';

my $json = Service->new_by_name('json', 'jsondata');
$json->populate;
is $json->template, '{"data": jsondata}', 'JSON OK';

done_testing;


# Service.pm
package Service;

use Moo;

has 'data'      => (is => 'ro', required => 1);
has 'template'  => (is => 'rw', builder => '_build_template');

sub populate {
	my $self = shift;
	(my $tmpl = $self->template) =~ s/\[data\]/$self->data/emsi;
	$self->template($tmpl);
}

sub new_by_name {
	my (undef, $name, $data) = @_;
	$name = uc $name;
	my $class = __PACKAGE__ . "::$name";
	eval "require $class";
	$class->new(data => $data);
}

1;


# Service/XML.pm
package Service::XML;

use Moo;
extends 'Service';

sub _build_template { '<data>[data]</data>' }

1;


# Service/JSON.pm
package Service::JSON;

use Moo;
extends 'Service';

sub _build_template { '{"data": [data]}' }

1;