acf

plugins/system/nrframework/NRFramework/CacheManager.php

@@ -0,0 +1,143 @@
+<?php
+
+/**
+ *  @author          Tassos.gr <info@tassos.gr>
+ *  @link            https://www.tassos.gr
+ *  @copyright       Copyright © 2024 Tassos All Rights Reserved
+ *  @license         GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
+*/
+
+namespace NRFramework;
+
+defined('_JEXEC') or die;
+
+/**
+ *  Cache Manager
+ * 
+ *  Singleton
+ */
+class CacheManager
+{
+	/**
+	 *  'static' cache array
+	 *   @var  array
+	 */
+    protected $cache = [];
+
+    /**
+     *  Cache mechanism object
+     *  @var object
+     */
+    protected $cache_mechanism = null;
+    
+    /**
+     *  Construct
+     */
+    protected function __construct($cache_mechanism)
+    {
+        $this->cache_mechanism = $cache_mechanism;
+    }
+
+    static public function getInstance($cache_mechanism)
+    {
+        static $instance = null;
+
+		if ($instance === null)
+		{
+            $instance = new CacheManager($cache_mechanism);
+		}
+		
+        return $instance;
+    }
+
+	/**
+	 *  Check if a hash already exists in memory
+	 *
+	 *  @param   string   $hash  The hash string
+	 *
+	 *  @return  boolean         
+	 */
+	public function has($hash)
+	{
+		return isset($this->cache[$hash]);
+	}
+
+	/**
+	 *  Returns a hash's value
+	 *
+	 *  @param   string  $hash  The hash string
+	 *  @param   string  $clone Why the hell we clone objects here?
+	 *
+	 *  @return  mixed          False on error, Object on success
+	 */
+	public function get($hash, $clone = true)
+	{
+		if (!$this->has($hash))
+		{
+			return false;
+		}
+
+		return is_object($this->cache[$hash]) && $clone ? clone $this->cache[$hash] : $this->cache[$hash];
+	}
+
+	/**
+	 *  Sets a hash value
+	 *
+	 *  @param  string  $hash  The hash string
+	 *  @param  mixed   $data  Can be string or object
+	 *
+	 *  @return mixed
+	 */
+	public function set($hash, $data)
+	{
+		$this->cache[$hash] = $data;
+		return $data;
+	}
+
+	/**
+	 *  Reads a hash value from memory or file
+	 *
+	 *  @param   string   $hash   The hash string
+	 *  @param   boolean  $force  If true, the filesystem will be used as well on the /cache/ folder
+	 *
+	 *  @return  mixed            The hash object value
+	 */
+	public function read($hash, $force = false)
+	{
+		if ($this->has($hash))
+		{
+			return $this->get($hash);
+		}
+
+		if ($force)
+		{
+			$this->cache_mechanism->setCaching(true);
+		}
+
+		return $this->cache_mechanism->get($hash);
+	}
+
+	/**
+	 *  Writes hash value in cache folder
+	 *
+	 *  @param   string   $hash  The hash string
+	 *  @param   mixed    $data  Can be string or object
+	 *  @param   integer  $ttl   Expiration duration in minutes. Default 1440 minutes = 1 day. 
+	 *
+	 *  @return  mixed           The hash object value
+	 */
+	public function write($hash, $data, $ttl = 1440)
+	{
+		if ($ttl > 0)
+		{
+			$this->cache_mechanism->setLifeTime($ttl);
+		}
+
+		$this->cache_mechanism->setCaching(true);
+		$this->cache_mechanism->store($data, $hash);
+
+		$this->set($hash, $data);
+
+		return $data;
+	}
+}