<?

namespace Bundle\PaymentGatewayBundle\DependencyInjection;

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class Configuration implements ConfigurationInterface
{

    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root('payment_gateway');

        $rootNode
            ->children()
                ->arrayNode('config')
                    ->children()
                        ->arrayNode('default')
                            ->children()
                                ->scalarNode('apiLoginId')->isRequired()->cannotBeEmpty()->end()
                                ->scalarNode('transactionKey')->isRequired()->cannotBeEmpty()->end()
                                ->scalarNode('postUrl')->isRequired()->cannotBeEmpty()->end()
                            ->end()
                        ->end()
                    ->end()
                ->end()
             ->end();


        return $treeBuilder;
    }

}