<?php declare(strict_types=1);
namespace Shopware\Core\Framework\Adapter\Twig;
use Doctrine\DBAL\Connection;
use Shopware\Core\Framework\DependencyInjection\CompilerPass\TwigLoaderConfigCompilerPass;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Twig\Error\LoaderError;
use Twig\Loader\LoaderInterface;
use Twig\Source;
class EntityTemplateLoader implements LoaderInterface, EventSubscriberInterface
{
/**
* @var array
*/
private $databaseTemplateCache = [];
/**
* @var Connection
*/
private $connection;
/**
* @var string
*/
private $environment;
public function __construct(Connection $connection, string $environment)
{
$this->connection = $connection;
$this->environment = $environment;
}
public static function getSubscribedEvents(): array
{
return ['app_template.written' => 'clearInternalCache'];
}
public function clearInternalCache(): void
{
$this->databaseTemplateCache = [];
}
public function getSourceContext($name)
{
$template = $this->findDatabaseTemplate($name);
if (!$template) {
throw new LoaderError(sprintf('Template "%s" is not defined.', $name));
}
return new Source($template['template'], $name);
}
public function getCacheKey($name)
{
return $name;
}
public function isFresh($name, $time)
{
$template = $this->findDatabaseTemplate($name);
if (!$template) {
return false;
}
return $template['updatedAt'] === null || $template['updatedAt']->getTimestamp() < $time;
}
public function exists($name)
{
$template = $this->findDatabaseTemplate($name);
if (!$template) {
return false;
}
return true;
}
private function findDatabaseTemplate(string $name): ?array
{
/*
* In dev env app templates are directly loaded over the filesystem
* @see TwigLoaderConfigCompilerPass::addAppTemplatePaths()
*/
if ($this->environment === 'dev') {
return null;
}
$templateName = $this->splitTemplateName($name);
$namespace = $templateName['namespace'];
$path = $templateName['path'];
if (empty($this->databaseTemplateCache)) {
$templates = $this->connection->fetchAll('
SELECT
`app_template`.`path` AS `path`,
`app_template`.`template` AS `template`,
`app_template`.`updated_at` AS `updatedAt`,
`app`.`name` AS `namespace`
FROM `app_template`
INNER JOIN `app` ON `app_template`.`app_id` = `app`.`id`
WHERE `app_template`.`active` = 1 AND `app`.`active` = 1
');
/** @var array $template */
foreach ($templates as $template) {
$this->databaseTemplateCache[$template['path']][$template['namespace']] = [
'template' => $template['template'],
'updatedAt' => $template['updatedAt'] ? new \DateTimeImmutable($template['updatedAt']) : null,
];
}
}
if (\array_key_exists($path, $this->databaseTemplateCache) && \array_key_exists($namespace, $this->databaseTemplateCache[$path])) {
return $this->databaseTemplateCache[$path][$namespace];
}
// we have already loaded all DB templates
// if the namespace is not included return null
return $this->databaseTemplateCache[$path][$namespace] = null;
}
private function splitTemplateName(string $template): array
{
// remove static template inheritance prefix
if (mb_strpos($template, '@') !== 0) {
return ['path' => $template, 'namespace' => ''];
}
// remove "@"
$template = mb_substr($template, 1);
$template = explode('/', $template);
$namespace = array_shift($template);
$template = implode('/', $template);
return ['path' => $template, 'namespace' => $namespace];
}
}