<?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\TwigBundle\DependencyInjection;

use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Mime\HtmlToTextConverter\HtmlToTextConverterInterface;

/**
 * TwigExtension configuration structure.
 *
 * @author Jeremy Mikola <jmikola@gmail.com>
 */
class Configuration implements ConfigurationInterface
{
    /**
     * Generates the configuration tree builder.
     */
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('twig');
        $rootNode = $treeBuilder->getRootNode();

        $rootNode->beforeNormalization()
            ->ifTrue(fn ($v) => \is_array($v) && \array_key_exists('exception_controller', $v))
            ->then(function ($v) {
                if (isset($v['exception_controller'])) {
                    throw new InvalidConfigurationException('Option "exception_controller" under "twig" must be null or unset, use "error_controller" under "framework" instead.');
                }

                unset($v['exception_controller']);

                return $v;
            })
        ->end();

        $this->addFormThemesSection($rootNode);
        $this->addGlobalsSection($rootNode);
        $this->addTwigOptions($rootNode);
        $this->addTwigFormatOptions($rootNode);
        $this->addMailerSection($rootNode);

        return $treeBuilder;
    }

    private function addFormThemesSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->fixXmlConfig('form_theme')
            ->children()
                ->arrayNode('form_themes')
                    ->addDefaultChildrenIfNoneSet()
                    ->prototype('scalar')->defaultValue('form_div_layout.html.twig')->end()
                    ->example(['@My/form.html.twig'])
                    ->validate()
                        ->ifTrue(fn ($v) => !\in_array('form_div_layout.html.twig', $v, true))
                        ->then(fn ($v) => array_merge(['form_div_layout.html.twig'], $v))
                    ->end()
                ->end()
            ->end()
        ;
    }

    private function addGlobalsSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->fixXmlConfig('global')
            ->children()
                ->arrayNode('globals')
                    ->normalizeKeys(false)
                    ->useAttributeAsKey('key')
                    ->example(['foo' => '@bar', 'pi' => 3.14])
                    ->prototype('array')
                        ->normalizeKeys(false)
                        ->beforeNormalization()
                            ->ifTrue(fn ($v) => \is_string($v) && str_starts_with($v, '@'))
                            ->then(function ($v) {
                                if (str_starts_with($v, '@@')) {
                                    return substr($v, 1);
                                }

                                return ['id' => substr($v, 1), 'type' => 'service'];
                            })
                        ->end()
                        ->beforeNormalization()
                            ->ifTrue(function ($v) {
                                if (\is_array($v)) {
                                    $keys = array_keys($v);
                                    sort($keys);

                                    return $keys !== ['id', 'type'] && $keys !== ['value'];
                                }

                                return true;
                            })
                            ->then(fn ($v) => ['value' => $v])
                        ->end()
                        ->children()
                            ->scalarNode('id')->end()
                            ->scalarNode('type')
                                ->validate()
                                    ->ifNotInArray(['service'])
                                    ->thenInvalid('The %s type is not supported')
                                ->end()
                            ->end()
                            ->variableNode('value')->end()
                        ->end()
                    ->end()
                ->end()
            ->end()
        ;
    }

    private function addTwigOptions(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->fixXmlConfig('path')
            ->children()
                ->scalarNode('autoescape_service')->defaultNull()->end()
                ->scalarNode('autoescape_service_method')->defaultNull()->end()
                ->scalarNode('base_template_class')
                    ->setDeprecated('symfony/twig-bundle', '7.1')
                    ->example('Twig\Template')
                    ->cannotBeEmpty()
                ->end()
                ->scalarNode('cache')->defaultValue('%kernel.cache_dir%/twig')->end()
                ->scalarNode('charset')->defaultValue('%kernel.charset%')->end()
                ->booleanNode('debug')->defaultValue('%kernel.debug%')->end()
                ->booleanNode('strict_variables')->defaultValue('%kernel.debug%')->end()
                ->scalarNode('auto_reload')->end()
                ->integerNode('optimizations')->min(-1)->end()
                ->scalarNode('default_path')
                    ->info('The default path used to load templates.')
                    ->defaultValue('%kernel.project_dir%/templates')
                ->end()
                ->arrayNode('file_name_pattern')
                    ->example('*.twig')
                    ->info('Pattern of file name used for cache warmer and linter.')
                    ->beforeNormalization()
                        ->ifString()
                            ->then(fn ($value) => [$value])
                        ->end()
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('paths')
                    ->normalizeKeys(false)
                    ->useAttributeAsKey('paths')
                    ->beforeNormalization()
                        ->ifArray()
                        ->then(function ($paths) {
                            $normalized = [];
                            foreach ($paths as $path => $namespace) {
                                if (\is_array($namespace)) {
                                    // xml
                                    $path = $namespace['value'];
                                    $namespace = $namespace['namespace'];
                                }

                                // path within the default namespace
                                if (ctype_digit((string) $path)) {
                                    $path = $namespace;
                                    $namespace = null;
                                }

                                $normalized[$path] = $namespace;
                            }

                            return $normalized;
                        })
                    ->end()
                    ->prototype('variable')->end()
                ->end()
            ->end()
        ;
    }

    private function addTwigFormatOptions(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->children()
                ->arrayNode('date')
                    ->info('The default format options used by the date filter.')
                    ->addDefaultsIfNotSet()
                    ->children()
                        ->scalarNode('format')->defaultValue('F j, Y H:i')->end()
                        ->scalarNode('interval_format')->defaultValue('%d days')->end()
                        ->scalarNode('timezone')
                            ->info('The timezone used when formatting dates, when set to null, the timezone returned by date_default_timezone_get() is used.')
                            ->defaultNull()
                        ->end()
                    ->end()
                ->end()
                ->arrayNode('number_format')
                    ->info('The default format options for the number_format filter.')
                    ->addDefaultsIfNotSet()
                    ->children()
                        ->integerNode('decimals')->defaultValue(0)->end()
                        ->scalarNode('decimal_point')->defaultValue('.')->end()
                        ->scalarNode('thousands_separator')->defaultValue(',')->end()
                    ->end()
                ->end()
            ->end()
        ;
    }

    private function addMailerSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->children()
                ->arrayNode('mailer')
                    ->children()
                        ->scalarNode('html_to_text_converter')
                            ->info(\sprintf('A service implementing the "%s".', HtmlToTextConverterInterface::class))
                            ->defaultNull()
                        ->end()
                    ->end()
                ->end()
            ->end()
        ;
    }
}