<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Bundle\SwiftmailerBundle\DependencyInjection;

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

/**
 * This class contains the configuration information for the bundle.
 *
 * This information is solely responsible for how the different configuration
 * sections are normalized, and merged.
 *
 * @author Christophe Coevoet <stof@notk.org>
 */
class Configuration implements ConfigurationInterface
{
    private $debug;

    /**
     * @param bool $debug The kernel.debug value
     */
    public function __construct($debug)
    {
        $this->debug = (bool) $debug;
    }

    /**
     * {@inheritdoc}
     */
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder('swiftmailer');
        $rootNode = method_exists(TreeBuilder::class, 'getRootNode') ? $treeBuilder->getRootNode() : $treeBuilder->root('swiftmailer');

        $rootNode
            ->beforeNormalization()
                ->ifNull()
                ->thenEmptyArray()
            ->end()
            ->beforeNormalization()
                ->ifTrue(function ($v) {
                    return \is_array($v) && !\array_key_exists('mailers', $v) && !\array_key_exists('mailer', $v);
                })
                ->then(function ($v) {
                    $mailer = [];
                    foreach ($v as $key => $value) {
                        if ('default_mailer' == $key) {
                            continue;
                        }
                        $mailer[$key] = $v[$key];
                        unset($v[$key]);
                    }
                    $v['default_mailer'] = isset($v['default_mailer']) ? (string) $v['default_mailer'] : 'default';
                    $v['mailers'] = [$v['default_mailer'] => $mailer];

                    return $v;
                })
            ->end()
            ->children()
                ->scalarNode('default_mailer')->end()
                ->append($this->getMailersNode())
            ->end()
            ->fixXmlConfig('mailer')
        ;

        return $treeBuilder;
    }

    /**
     * @return ArrayNodeDefinition
     */
    private function getMailersNode()
    {
        $treeBuilder = new TreeBuilder('mailers');
        $node = method_exists(TreeBuilder::class, 'getRootNode') ? $treeBuilder->getRootNode() : $treeBuilder->root('mailers');

        $node
            ->requiresAtLeastOneElement()
            ->useAttributeAsKey('name')
                ->prototype('array')
            ->children()
                ->scalarNode('url')->defaultNull()->end()
                ->scalarNode('transport')->defaultValue('smtp')->end()
                ->scalarNode('command')->defaultValue(@ini_get('sendmail_path') ?: '/usr/sbin/sendmail -bs')->end()
                ->scalarNode('username')->defaultNull()->end()
                ->scalarNode('password')->defaultNull()->end()
                ->scalarNode('host')->defaultValue('localhost')->end()
                ->scalarNode('port')->defaultNull()->end()
                ->scalarNode('timeout')->defaultValue(30)->end()
                ->scalarNode('source_ip')->defaultNull()->end()
                ->scalarNode('local_domain')->defaultNull()->end()
                ->arrayNode('stream_options')
                    ->addDefaultsIfNotSet()
                    ->ignoreExtraKeys(false)
                    ->normalizeKeys(false)
                    ->beforeNormalization()
                        ->ifTrue(function ($v) {
                            return isset($v['stream-option']);
                        })
                        ->then(function ($v) {
                            $recurse = function ($array) use (&$recurse) {
                                if (isset($array['name'])) {
                                    $array = [$array];
                                }
                                $n = [];
                                foreach ($array as $v) {
                                    $k = $v['name'];
                                    if (isset($v['value'])) {
                                        $n[$k] = $v['value'];
                                    } elseif (isset($v['stream-option'])) {
                                        $n[$k] = $recurse($v['stream-option']);
                                    }
                                }

                                return $n;
                            };

                            return $recurse($v['stream-option']);
                        })
                    ->end()
                ->end()
                ->scalarNode('encryption')
                    ->defaultNull()
                ->end()
                ->scalarNode('auth_mode')
                    ->defaultNull()
                ->end()
                ->scalarNode('sender_address')->end()
                ->arrayNode('delivery_addresses')
                    ->performNoDeepMerging()
                    ->beforeNormalization()
                        ->ifArray()
                        ->then(function ($v) {
                            return array_filter(array_values($v));
                        })
                    ->end()
                    ->prototype('scalar')
                    ->end()
                ->end()
                ->arrayNode('antiflood')
                    ->children()
                        ->scalarNode('threshold')->defaultValue(99)->end()
                        ->scalarNode('sleep')->defaultValue(0)->end()
                    ->end()
                ->end()
                ->booleanNode('logging')->defaultValue($this->debug)->end()
                ->arrayNode('spool')
                    ->children()
                        ->scalarNode('type')->defaultValue('file')->end()
                        ->scalarNode('path')->defaultValue('%kernel.cache_dir%/swiftmailer/spool')->end()
                        ->scalarNode('id')->defaultNull()->info('Used by "service" type')->end()
                    ->end()
                    ->validate()
                        ->ifTrue(function ($v) {
                            return 'service' === $v['type'] && empty($v['id']);
                        })
                        ->thenInvalid('You have to configure the service id')
                    ->end()
                ->end()
            ->end()
            ->fixXmlConfig('delivery_address', 'delivery_addresses')
            ->fixXmlConfig('delivery_whitelist_pattern', 'delivery_whitelist')
            ->children()
                ->arrayNode('delivery_whitelist')
                    ->prototype('scalar')
                    ->end()
                ->end()
                ->booleanNode('disable_delivery')->end()
            ->end()
        ;

        return $node;
    }
}