<?php

/*
 * This file is part of the NelmioApiDocBundle package.
 *
 * (c) Nelmio
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Nelmio\ApiDocBundle\DependencyInjection;

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

final class Configuration implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder('nelmio_api_doc');

        if (method_exists($treeBuilder, 'getRootNode')) {
            $rootNode = $treeBuilder->getRootNode();
        } else {
            // symfony < 4.2 support
            $rootNode = $treeBuilder->root('nelmio_api_doc');
        }

        $rootNode
            ->beforeNormalization()
                ->ifTrue(function ($v) {
                    return !isset($v['areas']) && isset($v['routes']);
                })
                ->then(function ($v) {
                    $v['areas'] = $v['routes'];
                    unset($v['routes']);
                    @trigger_error('The `nelmio_api_doc.routes` config option is deprecated. Please use `nelmio_api_doc.areas` instead (just replace `routes` by `areas` in your config).', E_USER_DEPRECATED);

                    return $v;
                })
            ->end()
            ->beforeNormalization()
                ->ifTrue(function ($v) {
                    return isset($v['routes']);
                })
                ->thenInvalid('You must not use both `nelmio_api_doc.areas` and `nelmio_api_doc.routes` config options. Please update your config to only use `nelmio_api_doc.areas`.')
            ->end()
            ->children()
                ->arrayNode('documentation')
                    ->useAttributeAsKey('key')
                    ->info('The documentation used as base')
                    ->example(['info' => ['title' => 'My App']])
                    ->prototype('variable')->end()
                ->end()
                ->arrayNode('areas')
                    ->info('Filter the routes that are documented')
                    ->defaultValue(
                        [
                            'default' => [
                                'path_patterns' => [],
                                'host_patterns' => [],
                                'with_annotation' => false,
                                'documentation' => [],
                                'name_patterns' => [],
                            ],
                        ]
                    )
                    ->beforeNormalization()
                        ->ifTrue(function ($v) {
                            return 0 === count($v) || isset($v['path_patterns']) || isset($v['host_patterns']) || isset($v['documentation']);
                        })
                        ->then(function ($v) {
                            return ['default' => $v];
                        })
                    ->end()
                    ->validate()
                        ->ifTrue(function ($v) {
                            return !isset($v['default']);
                        })
                        ->thenInvalid('You must specify a `default` area under `nelmio_api_doc.areas`.')
                    ->end()
                    ->useAttributeAsKey('name')
                    ->prototype('array')
                        ->addDefaultsIfNotSet()
                        ->children()
                            ->arrayNode('path_patterns')
                                ->defaultValue([])
                                ->example(['^/api', '^/api(?!/admin)'])
                                ->prototype('scalar')->end()
                            ->end()
                            ->arrayNode('host_patterns')
                                ->defaultValue([])
                                ->example(['^api\.'])
                                ->prototype('scalar')->end()
                            ->end()
                            ->arrayNode('name_patterns')
                                ->defaultValue([])
                                ->example(['^api_v1'])
                                ->prototype('scalar')->end()
                            ->end()
                            ->booleanNode('with_annotation')
                                ->defaultFalse()
                                ->info('whether to filter by annotation')
                            ->end()
                            ->arrayNode('documentation')
                                ->useAttributeAsKey('key')
                                ->defaultValue([])
                                ->info('The documentation used for area')
                                ->example(['info' => ['title' => 'My App']])
                                ->prototype('variable')->end()
                            ->end()
                        ->end()
                    ->end()
                ->end()
                ->arrayNode('models')
                    ->addDefaultsIfNotSet()
                    ->children()
                        ->booleanNode('use_jms')->defaultFalse()->end()
                    ->end()
                    ->children()
                        ->arrayNode('names')
                            ->prototype('array')
                                ->children()
                                    ->scalarNode('alias')->isRequired()->end()
                                    ->scalarNode('type')->isRequired()->end()
                                    ->variableNode('groups')
                                        ->defaultValue(null)
                                        ->validate()
                                            ->ifTrue(function ($v) { return null !== $v && !is_array($v); })
                                            ->thenInvalid('Model groups must be either `null` or an array.')
                                        ->end()
                                    ->end()
                                    ->arrayNode('areas')
                                        ->defaultValue([])
                                        ->prototype('scalar')->end()
                                    ->end()
                                ->end()
                        ->end()
                    ->end()
                ->end()
            ->end();

        return $treeBuilder;
    }
}