<?php

declare(strict_types=1);

namespace MartinGeorgiev\SocialPostBundle\DependencyInjection;

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

/**
 * @since 1.0.0
 *
 * @license https://opensource.org/licenses/MIT
 *
 * @see https://github.com/martin-georgiev/social-post-bundle
 */
class Configuration implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        if ($this->isBeforeSymfony4()) {
            $treeBuilder = new TreeBuilder();
            $rootNode = $treeBuilder->root('social_post');
        } else {
            $treeBuilder = new TreeBuilder('social_post');
            $rootNode = $treeBuilder->getRootNode();
        }

        $rootNode
            ->children()
            ->arrayNode('publish_on')
            ->requiresAtLeastOneElement()
            ->prototype('enum')
            ->values(['facebook', 'linkedin', 'twitter'])
            ->end()
            ->end()
            ->end();

        $providers = $rootNode->children()->arrayNode('providers');
        $this->addFacebook($providers);
        $this->addLinkedIn($providers);
        $this->addTwitter($providers);

        return $treeBuilder;
    }

    private function isBeforeSymfony4(): bool
    {
        return !\method_exists(TreeBuilder::class, 'getRootNode');
    }

    private function addFacebook(ArrayNodeDefinition $node): void
    {
        $node
            ->children()
            ->arrayNode('facebook')
            ->children()
            ->scalarNode('app_id')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('app_secret')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('default_access_token')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('page_id')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->booleanNode('enable_beta_mode')
            ->defaultFalse()
            ->end()
            ->scalarNode('default_graph_version')
            ->defaultNull()
            ->end()
            ->enumNode('persistent_data_handler')
            ->values(['session', 'memory'])
            ->defaultValue('memory')
            ->end()
            ->enumNode('pseudo_random_string_generator')
            ->values(['mcrypt', 'openssl', 'urandom'])
            ->defaultValue('openssl')
            ->end()
            ->enumNode('http_client_handler')
            ->values(['curl', 'stream', 'guzzle'])
            ->defaultValue('curl')
            ->end()
            ->end()
            ->end();
    }

    private function addLinkedIn(ArrayNodeDefinition $node): void
    {
        $node
            ->children()
            ->arrayNode('linkedin')
            ->children()
            ->scalarNode('client_id')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('client_secret')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('access_token')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('company_page_id')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->end()
            ->end();
    }

    private function addTwitter(ArrayNodeDefinition $node): void
    {
        $node
            ->children()
            ->arrayNode('twitter')
            ->children()
            ->scalarNode('consumer_key')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('consumer_secret')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('access_token')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->scalarNode('access_token_secret')
            ->isRequired()
            ->cannotBeEmpty()
            ->end()
            ->end()
            ->end();
    }
}