Overblog\GraphQLBundle\DependencyInjection\OverblogGraphQLExtension

Complexity

Total Complexity

38

Size/Duplication

Total Lines	269
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	3
Bugs	1	Features	0

19 Methods

Rating	Name	Duplication	Size	Complexity
A	loadConfigFiles()	0	11	1
A	setCompilerCacheWarmer()	0	8	1
A	registerValidatorFactory()	0	13	2
A	setDefaultFieldResolver()	0	3	1
A	setSecurity()	0	11	3
A	setSchemaBuilderArguments()	0	4	1
A	registerForAutoconfiguration()	0	8	1
A	setErrorHandler()	0	26	4
A	setBatchingMethod()	0	3	1
A	setDefinitionParameters()	0	8	1
A	setConfigBuilders()	0	7	4
A	setDebugListener()	0	6	2
A	buildExceptionMap()	0	15	3
A	load()	0	23	1
A	getAlias()	0	3	1
A	setClassLoaderListener()	0	12	2
A	setServicesAliases()	0	6	3
A	setSchemaArguments()	0	35	4
A	getConfiguration()	0	5	2

<?php

declare(strict_types=1);

namespace Overblog\GraphQLBundle\DependencyInjection;

use GraphQL\Error\UserError;
use GraphQL\Type\Definition\Type;
use GraphQL\Type\Schema;
use Overblog\GraphQLBundle\CacheWarmer\CompileCacheWarmer;
use Overblog\GraphQLBundle\Config\Processor\BuilderProcessor;
use Overblog\GraphQLBundle\Definition\Builder\SchemaBuilder;
use Overblog\GraphQLBundle\Definition\Resolver\MutationInterface;
use Overblog\GraphQLBundle\Definition\Resolver\ResolverInterface;
use Overblog\GraphQLBundle\Error\ErrorHandler;
use Overblog\GraphQLBundle\Error\UserWarning;
use Overblog\GraphQLBundle\Event\Events;
use Overblog\GraphQLBundle\EventListener\ClassLoaderListener;
use Overblog\GraphQLBundle\EventListener\DebugListener;
use Overblog\GraphQLBundle\EventListener\ErrorHandlerListener;
use Overblog\GraphQLBundle\EventListener\ErrorLoggerListener;
use Overblog\GraphQLBundle\EventListener\TypeDecoratorListener;
use Overblog\GraphQLBundle\Request\Executor;
use Overblog\GraphQLBundle\Validator\ValidatorFactory;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;

class OverblogGraphQLExtension extends Extension
{
    public function load(array $configs, ContainerBuilder $container): void
    {
        $this->loadConfigFiles($container);
        $configuration = $this->getConfiguration($configs, $container);
        $config = $this->processConfiguration($configuration, $configs);

        $this->setBatchingMethod($config, $container);
        $this->setServicesAliases($config, $container);
        $this->setSchemaBuilderArguments($config, $container);
        $this->setSchemaArguments($config, $container);
        $this->setErrorHandler($config, $container);
        $this->setSecurity($config, $container);
        $this->setConfigBuilders($config, $container);
        $this->setDebugListener($config, $container);
        $this->setDefinitionParameters($config, $container);
        $this->setClassLoaderListener($config, $container);
        $this->setCompilerCacheWarmer($config, $container);
        $this->registerForAutoconfiguration($container);
        $this->setDefaultFieldResolver($config, $container);
        $this->registerValidatorFactory($container);

        $container->setParameter($this->getAlias().'.config', $config);
        $container->setParameter($this->getAlias().'.resources_dir', \realpath(__DIR__.'/../Resources'));
    }

    public function getAlias()
    {
        return Configuration::NAME;
    }

    public function getConfiguration(array $config, ContainerBuilder $container)
    {
        return new Configuration(
            $container->getParameter('kernel.debug'),
            $container->hasParameter('kernel.cache_dir') ? $container->getParameter('kernel.cache_dir') : null
        );
    }

    private function loadConfigFiles(ContainerBuilder $container): void
    {
        $loader = new YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services.yaml');
        $loader->load('commands.yaml');
        $loader->load('listeners.yaml');
        $loader->load('graphql_types.yaml');
        $loader->load('graphql_resolvers.yaml');
        $loader->load('expression_language_functions.yaml');
        $loader->load('definition_config_processors.yaml');
        $loader->load('aliases.yaml');
    }

    private function registerForAutoconfiguration(ContainerBuilder $container): void
    {
        $container->registerForAutoconfiguration(MutationInterface::class)
            ->addTag('overblog_graphql.mutation');
        $container->registerForAutoconfiguration(ResolverInterface::class)
            ->addTag('overblog_graphql.resolver');
        $container->registerForAutoconfiguration(Type::class)
            ->addTag('overblog_graphql.type');
    }

    private function registerValidatorFactory(ContainerBuilder $container): void
    {
        if (\class_exists('Symfony\\Component\\Validator\\Validation')) {
            $container->register(ValidatorFactory::class)
                ->setArguments([
                    new Reference('validator.validator_factory'),
                    new Reference('translator.default', $container::NULL_ON_INVALID_REFERENCE),
                ])
                ->addTag(
                    'overblog_graphql.global_variable',
                    [
                        'alias' => 'validatorFactory',
                        'public' => false,
                    ]
                );
        }
    }

    private function setDefaultFieldResolver(array $config, ContainerBuilder $container): void
    {
        $container->setAlias($this->getAlias().'.default_field_resolver', $config['definitions']['default_field_resolver']);
    }

    private function setCompilerCacheWarmer(array $config, ContainerBuilder $container): void
    {
        $container->register(CompileCacheWarmer::class)
            ->setArguments([
                new Reference($this->getAlias().'.cache_compiler'),
                $config['definitions']['auto_compile'],
            ])
            ->addTag('kernel.cache_warmer', ['priority' => 50])
        ;
    }

    private function setClassLoaderListener(array $config, ContainerBuilder $container): void
    {
        $container->setParameter($this->getAlias().'.use_classloader_listener', $config['definitions']['use_classloader_listener']);
        if ($config['definitions']['use_classloader_listener']) {
            $definition = $container->register(
                $this->getAlias().'.event_listener.classloader_listener',
                ClassLoaderListener::class
            );
            $definition->setPublic(true);
            $definition->setArguments([new Reference($this->getAlias().'.cache_compiler')]);
            $definition->addTag('kernel.event_listener', ['event' => 'kernel.request', 'method' => 'load', 'priority' => 255]);
            $definition->addTag('kernel.event_listener', ['event' => 'console.command', 'method' => 'load', 'priority' => 255]);
        }
    }

    private function setDefinitionParameters(array $config, ContainerBuilder $container): void
    {
        // generator and config
        $container->setParameter($this->getAlias().'.class_namespace', $config['definitions']['class_namespace']);
        $container->setParameter($this->getAlias().'.cache_dir', $config['definitions']['cache_dir']);
        $container->setParameter($this->getAlias().'.cache_dir_permissions', $config['definitions']['cache_dir_permissions']);
        $container->setParameter($this->getAlias().'.argument_class', $config['definitions']['argument_class']);
        $container->setParameter($this->getAlias().'.use_experimental_executor', $config['definitions']['use_experimental_executor']);
    }

    private function setBatchingMethod(array $config, ContainerBuilder $container): void
    {
        $container->setParameter($this->getAlias().'.batching_method', $config['batching_method']);
    }

    private function setDebugListener(array $config, ContainerBuilder $container): void
    {
        if ($config['definitions']['show_debug_info']) {
            $definition = $container->register(DebugListener::class);
            $definition->addTag('kernel.event_listener', ['event' => Events::PRE_EXECUTOR, 'method' => 'onPreExecutor']);
            $definition->addTag('kernel.event_listener', ['event' => Events::POST_EXECUTOR, 'method' => 'onPostExecutor']);
        }
    }

    private function setConfigBuilders(array $config, ContainerBuilder $container): void
    {
        foreach (BuilderProcessor::BUILDER_TYPES as $type) {
            if (!empty($config['definitions']['builders'][$type])) {
                foreach ($config['definitions']['builders'][$type] as $params) {
                    $container->addObjectResource($params['class']);
                    BuilderProcessor::addBuilderClass($params['alias'], $type, $params['class']);
                }
            }
        }
    }

    private function setSecurity(array $config, ContainerBuilder $container): void
    {
        $executorDefinition = $container->getDefinition(Executor::class);
        if ($config['security']['enable_introspection']) {
            $executorDefinition->addMethodCall('enableIntrospectionQuery');
        } else {
            $executorDefinition->addMethodCall('disableIntrospectionQuery');
        }

        foreach ($config['security'] as $key => $value) {
            $container->setParameter(\sprintf('%s.%s', $this->getAlias(), $key), $value);
        }
    }

    private function setErrorHandler(array $config, ContainerBuilder $container): void
    {
        if ($config['errors_handler']['enabled']) {
            $id = $this->getAlias().'.error_handler';
            $container->register($id, ErrorHandler::class)
                ->setArguments(
                    [
                        new Reference('event_dispatcher'),
                        $config['errors_handler']['internal_error_message'],
                        $this->buildExceptionMap($config['errors_handler']['exceptions']),
                        $config['errors_handler']['map_exceptions_to_parent'],
                    ]
                );

            $errorHandlerListenerDefinition = $container->register(ErrorHandlerListener::class);
            $errorHandlerListenerDefinition->setPublic(true)
                ->setArguments([new Reference($id), $config['errors_handler']['rethrow_internal_exceptions'], $config['errors_handler']['debug']])
                ->addTag('kernel.event_listener', ['event' => Events::POST_EXECUTOR, 'method' => 'onPostExecutor']);

            if ($config['errors_handler']['log']) {
                $loggerServiceId = $config['errors_handler']['logger_service'];
                $invalidBehavior = ErrorLoggerListener::DEFAULT_LOGGER_SERVICE === $loggerServiceId ? ContainerInterface::NULL_ON_INVALID_REFERENCE : ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
                $container->register(ErrorLoggerListener::class)
                    ->setPublic(true)
                    ->setArguments([new Reference($loggerServiceId, $invalidBehavior)])
                    ->addTag('kernel.event_listener', ['event' => Events::ERROR_FORMATTING, 'method' => 'onErrorFormatting']);
            }
        }
    }

    private function setSchemaBuilderArguments(array $config, ContainerBuilder $container): void
    {
        $container->getDefinition(SchemaBuilder::class)
            ->replaceArgument(1, $config['definitions']['config_validation']);
    }

    private function setSchemaArguments(array $config, ContainerBuilder $container): void
    {
        if (isset($config['definitions']['schema'])) {
            $executorDefinition = $container->getDefinition(Executor::class);
            $typeDecoratorListenerDefinition = $container->getDefinition(TypeDecoratorListener::class);

            foreach ($config['definitions']['schema'] as $schemaName => $schemaConfig) {
                // builder
                $schemaBuilderID = \sprintf('%s.schema_builder_%s', $this->getAlias(), $schemaName);
                $definition = $container->register($schemaBuilderID, \Closure::class);
                $definition->setFactory([new Reference('overblog_graphql.schema_builder'), 'getBuilder']);
                $definition->setArguments([
                    $schemaName,
                    $schemaConfig['query'],
                    $schemaConfig['mutation'],
                    $schemaConfig['subscription'],
                    $schemaConfig['types'],
                ]);
                // schema
                $schemaID = \sprintf('%s.schema_%s', $this->getAlias(), $schemaName);
                $definition = $container->register($schemaID, Schema::class);
                $definition->setFactory([new Reference($schemaBuilderID), 'call']);

                if (!empty($schemaConfig['resolver_maps'])) {
                    $typeDecoratorListenerDefinition->addMethodCall(
                        'addSchemaResolverMaps',
                        [
                            $schemaName,
                            \array_map(function ($id) {
                                return new Reference($id);
                            }, $schemaConfig['resolver_maps']),
                        ]
                    );
                }
                $executorDefinition->addMethodCall('addSchemaBuilder', [$schemaName, new Reference($schemaBuilderID)]);
            }
        }
    }

    private function setServicesAliases(array $config, ContainerBuilder $container): void
    {
        if (isset($config['services'])) {
            foreach ($config['services'] as $name => $id) {
                $alias = \sprintf('%s.%s', $this->getAlias(), $name);
                $container->setAlias($alias, $id);
            }
        }
    }

    /**
     * Returns a list of custom exceptions mapped to error/warning classes.
     *
     * @param array $exceptionConfig
     *
     * @return array Custom exception map, [exception => UserError/UserWarning]
     */
    private function buildExceptionMap(array $exceptionConfig)
    {
        $exceptionMap = [];
        $errorsMapping = [
            'errors' => UserError::class,
            'warnings' => UserWarning::class,
        ];

        foreach ($exceptionConfig as $type => $exceptionList) {
            foreach ($exceptionList as $exception) {
                $exceptionMap[$exception] = $errorsMapping[$type];
            }
        }

        return $exceptionMap;
    }
}