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local/modules/TheliaSmarty/Template/Plugins/Cache.php

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+<?php
+/*************************************************************************************/
+/*      This file is part of the Thelia package.                                     */
+/*                                                                                   */
+/*      Copyright (c) OpenStudio                                                     */
+/*      email : dev@thelia.net                                                       */
+/*      web : http://www.thelia.net                                                  */
+/*                                                                                   */
+/*      For the full copyright and license information, please view the LICENSE.txt  */
+/*      file that was distributed with this source code.                             */
+/*************************************************************************************/
+
+namespace TheliaSmarty\Template\Plugins;
+
+use Psr\Cache\CacheItemInterface;
+use Symfony\Component\Cache\Adapter\AdapterInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Thelia\Core\HttpFoundation\Session\Session;
+use TheliaSmarty\Template\AbstractSmartyPlugin;
+use TheliaSmarty\Template\SmartyPluginDescriptor;
+
+/**
+ * Class Cache
+ * @package Thelia\Core\Template\Smarty\Plugins
+ * @author Gilles Bourgeat <gbourgeat@openstudio.fr>
+ */
+class Cache extends AbstractSmartyPlugin
+{
+    /** @var AdapterInterface */
+    protected $adapter;
+
+    /** @var RequestStack */
+    protected $requestStack;
+
+    /** @var bool */
+    protected $debug;
+
+    /**
+     * Cache constructor.
+     * @param AdapterInterface $esiFragmentRenderer
+     * @param RequestStack $requestStack
+     * @param bool $debug
+     */
+    public function __construct(AdapterInterface $esiFragmentRenderer, RequestStack $requestStack, $debug)
+    {
+        $this->adapter = $esiFragmentRenderer;
+        $this->requestStack = $requestStack;
+        $this->debug = $debug;
+    }
+
+    public function cache(array $params, $content, $template, &$repeat)
+    {
+        $key = $this->getParam($params, 'key');
+        if (null === $key || empty($key)) {
+            throw new \InvalidArgumentException(
+                "Missing 'key' parameter in cache arguments"
+            );
+        }
+
+        $ttl = (int) $this->getParam($params, 'ttl');
+        if (null === $ttl) {
+            throw new \InvalidArgumentException(
+                "Missing 'ttl' parameter in cache arguments"
+            );
+        }
+
+        if ($this->debug || $ttl < 1) {
+            if (null !== $content) {
+                $repeat = false;
+                return $content;
+            }
+            return null;
+        }
+
+        /** @var CacheItemInterface $cacheItem */
+        $cacheItem = $this->adapter->getItem(
+            $this->generateKey($params)
+        );
+
+        if ($cacheItem->isHit()) {
+            $repeat = false;
+            return $cacheItem->get();
+        }
+
+        if ($content !== null) {
+            $cacheItem
+                ->expiresAfter((int) $params['ttl'])
+                ->set($content);
+
+            $this->adapter->save($cacheItem);
+            $repeat = false;
+            return $cacheItem->get();
+        }
+    }
+
+    /**
+     * @param array $params
+     * @return string
+     */
+    protected function generateKey(array $params)
+    {
+        /** @var Session $session */
+        if (null !== $session = $this->requestStack->getCurrentRequest()->getSession()) {
+            if (!isset($params['lang'])) {
+                $params['lang'] = $session->getLang(true)->getId();
+            }
+            if (!isset($params['currency'])) {
+                $params['currency'] = $session->getCurrency(true)->getId();
+            }
+        }
+
+        return 'smarty_cache_' . md5(json_encode($params));
+    }
+
+    /**
+     * @return array an array of SmartyPluginDescriptor
+     */
+    public function getPluginDescriptors()
+    {
+        return array(
+            new SmartyPluginDescriptor('block', 'cache', $this, 'cache')
+        );
+    }
+}