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<?php |
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namespace Quantum\Libraries\ResourceCache; |
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use Quantum\Libraries\Storage\FileSystem; |
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use Quantum\Exceptions\DiException; |
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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 $mimeType = '.tmp'; |
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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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$this->fs = Di::get(FileSystem::class); |
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if (!config()->has('view_cache')) { |
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throw new Exception('The config "view_cache" does not exists.'); |
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} |
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$this->cacheDir = self::getCacheDir(); |
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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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* @param string $sessionId |
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* @return ViewCache |
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*/ |
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public function set(string $key, string $content, string $sessionId): ViewCache |
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{ |
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if (config()->has('view_cache.minify')) { |
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$content = $this->minify($content); |
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} |
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$cacheFile = $this->getCacheFile($key, $sessionId); |
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$this->fs->put($cacheFile, $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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* @param string $sessionId |
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* @param int $ttl |
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* @return mixed|null |
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*/ |
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public function get(string $key, string $sessionId, int $ttl): ?string |
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{ |
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$cacheFile = $this->getCacheFile($key, $sessionId); |
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if (!$this->fs->exists($cacheFile)) { |
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return null; |
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} |
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$data = $this->fs->get($cacheFile); |
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if (time() > ($this->fs->lastModified($cacheFile) + $ttl)) { |
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$this->fs->remove($cacheFile); |
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return null; |
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} |
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return $data; |
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} |
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/** |
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* @param string $key |
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* @param string $sessionId |
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* @return void |
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*/ |
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public function delete(string $key, string $sessionId): void |
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{ |
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$cacheFile = $this->getCacheFile($key, $sessionId); |
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if ($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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* @param string $sessionId |
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* @param int $ttl |
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* @return bool |
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*/ |
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public function exists(string $key, string $sessionId, int $ttl): bool |
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{ |
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$cacheFile = $this->getCacheFile($key, $sessionId); |
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if (!$this->fs->exists($cacheFile)) { |
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return false; |
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} |
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if (time() > ($this->fs->lastModified($cacheFile) + $ttl)) { |
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$this->fs->remove($cacheFile); |
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return false; |
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} |
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return true; |
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} |
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private static function getCacheDir(): string |
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{ |
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$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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* @param string $sessionId |
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* @return string |
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*/ |
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private function getCacheFile(string $key, string $sessionId): string |
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{ |
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return $this->cacheDir . md5($key . $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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} |