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<?php |
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namespace Quantum\Libraries\ResourceCache; |
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use Quantum\Exceptions\DatabaseException; |
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use Quantum\Libraries\Storage\FileSystem; |
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use Quantum\Exceptions\SessionException; |
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use Quantum\Exceptions\ConfigException; |
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use Quantum\Exceptions\LangException; |
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use Quantum\Exceptions\DiException; |
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use Quantum\Loader\Setup; |
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use ReflectionException; |
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use voku\helper\HtmlMin; |
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use Quantum\Di\Di; |
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use Exception; |
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class ViewCache |
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{ |
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/** |
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* @var string |
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*/ |
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private $cacheDir; |
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/** |
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* @var string |
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*/ |
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private $sessionId; |
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/** |
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* @var string |
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*/ |
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private $mimeType = '.tmp'; |
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/** |
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* @var int |
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*/ |
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private $ttl = 300; |
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/** |
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* @var bool |
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*/ |
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private $isEnabled; |
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/** |
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* @var object |
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*/ |
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private $fs; |
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/** |
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* @var ViewCache |
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*/ |
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private static $instance = null; |
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public static function getInstance(): ViewCache |
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{ |
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if (self::$instance === null) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* @throws DiException |
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* @throws ReflectionException |
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* @throws Exception |
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*/ |
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public function __construct() |
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{ |
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if (config()->get('resource_cache')){ |
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config()->import(new Setup('config','view_cache')); |
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} |
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$this->fs = Di::get(FileSystem::class); |
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$this->cacheDir = $this->getCacheDir(); |
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$configTtl = config()->get('view_cache.ttl'); |
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if (is_int($configTtl)){ |
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$this->ttl = $configTtl; |
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} |
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$this->sessionId = session()->getId(); |
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if (!$this->fs->isDirectory($this->cacheDir)) { |
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mkdir($this->cacheDir, 0777, true); |
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} |
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} |
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/** |
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* @param string $key |
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* @param string $content |
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* @return ViewCache |
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*/ |
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public function set(string $key, string $content): ViewCache |
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{ |
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if (config()->has('view_cache.minify')) { |
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$content = $this->minify($content); |
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} |
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$this->fs->put($this->getCacheFile($key), $content); |
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return $this; |
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} |
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/** |
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* @param string $key |
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* @return mixed|null |
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*/ |
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public function get(string $key): ?string |
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{ |
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if (!$this->exists($key)) { |
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return null; |
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} |
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return $this->fs->get($this->getCacheFile($key)); |
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} |
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/** |
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* @param string $key |
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* @return void |
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*/ |
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public function delete(string $key): void |
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{ |
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$cacheFile = $this->getCacheFile($key); |
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if ($this->fs->exists($cacheFile)) { |
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$this->fs->remove($cacheFile); |
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} |
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} |
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/** |
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* @param string $key |
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* @return bool |
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*/ |
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public function exists(string $key): bool |
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{ |
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$cacheFile = $this->getCacheFile($key); |
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if (!$this->fs->exists($cacheFile) || $this->isExpired($cacheFile)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @param $cacheFile |
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* @return bool |
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*/ |
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public function isExpired($cacheFile): bool |
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{ |
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if (time() > ($this->fs->lastModified($cacheFile) + $this->ttl)) { |
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$this->fs->remove($cacheFile); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @return bool |
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* @throws DiException |
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* @throws ReflectionException |
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* @throws ConfigException |
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* @throws DatabaseException |
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* @throws LangException |
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* @throws SessionException |
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*/ |
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public function isEnabled(): bool |
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{ |
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if (!is_null($this->isEnabled)){ |
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return $this->isEnabled; |
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} |
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$resourceCache = config()->get('resource_cache'); |
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if (is_bool($resourceCache) && $resourceCache && !empty(session()->getId())){ |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param int $ttl |
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* @return void |
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*/ |
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public function setTtl(int $ttl): void |
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{ |
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$this->ttl = $ttl; |
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} |
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public function enableCaching(bool $state): void |
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{ |
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$this->isEnabled = $state; |
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} |
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/** |
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* @return string |
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*/ |
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private function getCacheDir(): string |
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{ |
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$configCacheDir = config()->get('view_cache.cache_dir', 'cache'); |
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$cacheDir = base_dir() . DS . $configCacheDir . DS . 'views' . DS; |
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if ($module = current_module()) { |
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$cacheDir = base_dir() . DS . $configCacheDir . DS . 'views' . DS . strtolower($module) . DS; |
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} |
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return $cacheDir; |
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} |
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/** |
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* @param string $key |
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* @return string |
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*/ |
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private function getCacheFile(string $key): string |
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{ |
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return $this->cacheDir . md5($key . $this->sessionId) . $this->mimeType; |
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} |
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/** |
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* @param string $content |
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* @return string |
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*/ |
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private function minify(string $content): string |
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{ |
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return (new HtmlMin())->minify($content); |
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} |
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} |