<?php

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namespace ImageOptimization;

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if ( ! defined( 'ABSPATH' ) ) {

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exit; // Exit if accessed directly.

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}

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/**

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* Class Plugin

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* Main Plugin class

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*/

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class Plugin {

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/**

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* Instance

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*

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* @access public

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* @static

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*

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* @var Plugin The single instance of the class.

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*/

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public static $instance = null;

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/**

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* Modules Manager

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* @var null|Manager

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*/

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public $modules_manager = null;

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/**

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* class aliases

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* @access private

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* @var array

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*/

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private $classes_aliases = [];

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/**

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* Instance

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*

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* Ensures only one instance of the class is loaded or can be loaded.

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*

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* @access public

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*

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* @return Plugin An instance of the class.

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*/

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public static function instance() {

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if ( is_null( self::$instance ) ) {

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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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public function autoload( $class ) {

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if ( 0 !== strpos( $class, __NAMESPACE__ ) ) {

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return;

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}

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$has_class_alias = isset( $this->classes_aliases[ $class ] );

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// Backward Compatibility: Save old class name for set an alias after the new class is loaded

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if ( $has_class_alias ) {

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$class_alias_name = $this->classes_aliases[ $class ];

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$class_to_load = $class_alias_name;

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} else {

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$class_to_load = $class;

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}

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if ( ! class_exists( $class_to_load ) ) {

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$filename = strtolower(

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preg_replace(

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[ '/^' . __NAMESPACE__ . '\\\/', '/([a-z])([A-Z])/', '/_/', '/\\\/' ],

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[ '', '$1-$2', '-', DIRECTORY_SEPARATOR ],

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$class_to_load

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)

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);

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$filename = IMAGE_OPTIMIZATION_PATH . $filename . '.php';

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if ( is_readable( $filename ) ) {

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include $filename;

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}

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}

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if ( $has_class_alias ) {

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class_alias( $class_alias_name, $class );

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}

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}

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private function includes() {

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require_once IMAGE_OPTIMIZATION_PATH . 'includes/modules-manager.php';

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$this->modules_manager = new Manager();

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}

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/**

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* Plugin class constructor

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*

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* Register plugin action hooks and filters

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*

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* @access public

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*/

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public function __construct() {

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static $autoloader_registered = false;

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if ( ! $autoloader_registered ) {

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$autoloader_registered = spl_autoload_register( [ $this, 'autoload' ] );

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}

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$this->includes();

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}

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}

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// Instantiate Plugin Class

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Plugin::instance();

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