<?php

namespace Automad\API;

use Automad\Core\Cache;
use Automad\Core\Debug;
use Automad\Core\FileSystem;
use Automad\Core\Str;

/**
 * The ResponseCache allows for caching API response data objects.
 *
 * @author Marc Anton Dahmen
 * @copyright Copyright (c) 2023 by Marc Anton Dahmen - https://marcdahmen.de
 * @license MIT license - https://automad.org/license
 */
class ResponseCache
{
	/** The cache lifetime. */
	const LIFETIME = 3600;

	/** The response object. */
	private Response $Response;


	/**
	 * The constructor
	 *
	 * @param callable():Response $create
	 */
	public function __construct(callable $create)
	{
		if (!AM_CACHE_ENABLED) {
			Debug::log(AM_REQUEST, 'Caching is disabled. Creating fresh response');
			$this->Response = $create();

			return;
		}

		$Cache = new Cache();
		$siteMTime = $Cache->getSiteMTime();
		$hash = sha1(serialize($_GET) . serialize($_POST) . serialize($_SESSION));
		$path = strtolower(AM_DIR_TMP . '/' . AM_REQUEST . '/' . $hash);
		$responseMTime = filemtime($path);

		Debug::log($path, 'Response caching path');

		if (is_readable($path) && $siteMTime < $responseMTime && time() < $responseMTime + ResponseCache::LIFETIME) {
			Debug::log(AM_REQUEST, 'Loading response from cache');
			$this->Response = unserialize(file_get_contents($path));

			return;
		}

		Debug::log(AM_REQUEST, 'Creating new response');
		$this->Response = $create();

		Debug::log($path, 'Saving response to the cache');
		FileSystem::write($path, serialize($this->Response));
	}


	/**
	 * Get the cached or create response object.
	 *
	 * @return Response
	 */
	public function get(): Response
	{
		return $this->Response;
	}
}
__halt_compiler();----SIGNATURE:----De6aXZsk179d+73j4HhrS57xH2rBTYvqFFtTx1eReLz2qt/xyexoHy4zZ0rZDZ7Vq3UDIur5rBtm2chWVWahJMD6SNeNBWJKuSm3YuRF4cUVi2csZNVQ85eJSOHb11kOhPQqWqjTpi7jmk+gDBGbU1zHxmpDKnO4ryC7UpxuJRaeiuqmgK4hfMH/UOoNRdiiTaTJ+duplnqacj0uFOL5dlYb/yoe7Endrt2EUPq6hti1rN0ABzA6bNeosRYdIEgy/X5gPSYzfM7ktbXQw1wwTq6+NaGxWmEpMNBaEzs5VUDJE65kEutESlpujQYfxMiwy3s9KGwbAEaCsPpVIdM72YoCaZIy5vLBocTQphs7huwbUqzt3qZDntuyyfD8s0BcVlvIE84QPc1KhhSkaygrf6WPbiceGLG82xYC91RInEAgBnUc/4l5I/4wsPSC58fNJQbTZ9QPYeqNXOaICHs4vSzQD3V3tMwDHZgBjhxiTPliz6TWTyeng3boh8bEtVbfnYO5sx+OsdtC3gtkGOJDHJWpsZ0Wpuwh2s9H9cjeSyRP7rswRYAhtvB6e8btQcu0AAAlrywFfUmOgvgk/uCH5MqVDzA+kcXb6fRm9SJzLqDeIgiHyll1W2kVUt9CqS8UH0i+37Qei9Xd0GyQdX5J8JhZGnt0S6Qslk8Uxlk+WII=----ATTACHMENT:----MzUyMzI1NTYxMDYzMjkzNyA2NjA1MjU5NzM4Nzg4MDc1IDQ5NzY0MjM5OTEyMzMwNzA=