<?php

namespace IRI\Bundle\WikiTagBundle\DependencyInjection;

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

use Symfony\Component\Config\Definition\ConfigurationInterface;

/**

 * This is the class that validates and merges configuration from your app/config files

 *

 * To learn more see {@link http://symfony.com/doc/current/cookbook/bundles/extension.html#cookbook-bundles-extension-config-class}

 */

class Configuration implements ConfigurationInterface

{

    /**

     * {@inheritDoc}

     */

    public function getConfigTreeBuilder()

    {

        $treeBuilder = new TreeBuilder();

        $rootNode = $treeBuilder->root('wiki_tag');

        $rootNode

            ->children()

                ->scalarNode('route_for_documents_by_tag')->defaultNull()->end()

                ->scalarNode('document_class')->isRequired()->end()

                ->scalarNode('document_id_column')->defaultValue('id')->end()

            ->end()

            ->fixXmlConfig('field')

            ->children()

                ->arrayNode('fields')

                    ->treatNullLike(array())

                    ->useAttributeAsKey('name')

                    ->prototype('array')

                        ->performNoDeepMerging()

                        ->children()

                            ->scalarNode('type')->defaultValue('text')->end()

                            ->scalarNode('length')

                                ->beforeNormalization()

                                    ->ifString()

                                    ->then(function($v) { return intval($v); })

                                ->end()

                            ->end()

                            ->scalarNode('accessor')->end()

                        ->end()

                    ->end()

                ->end()

            ->end();

        return $treeBuilder;

    }

}