first commit

8 files changed, 681 insertions, 0 deletions

diff --git a/public/system/engine/action.php b/public/system/engine/action.php
new file mode 100644
index 0000000..bbb51e5
--- /dev/null
+++ b/public/system/engine/action.php
@@ -0,0 +1,84 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Action class
+*/
+class Action {
+	private $id;
+	private $route;
+	private $method = 'index';
+	
+	/**
+	 * Constructor
+	 *
+	 * @param	string	$route
+ 	*/
+	public function __construct($route) {
+		$this->id = $route;
+		
+		$parts = explode('/', preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route));
+
+		// Break apart the route
+		while ($parts) {
+			$file = DIR_APPLICATION . 'controller/' . implode('/', $parts) . '.php';
+
+			if (is_file($file)) {
+				$this->route = implode('/', $parts);		
+				
+				break;
+			} else {
+				$this->method = array_pop($parts);
+			}
+		}
+	}
+
+	/**
+	 * 
+	 *
+	 * @return	string
+	 *
+ 	*/	
+	public function getId() {
+		return $this->id;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	object	$registry
+	 * @param	array	$args
+ 	*/	
+	public function execute($registry, array $args = array()) {
+		// Stop any magical methods being called
+		if (substr($this->method, 0, 2) == '__') {
+			return new \Exception('Error: Calls to magic methods are not allowed!');
+		}
+
+		$file  = DIR_APPLICATION . 'controller/' . $this->route . '.php';	
+		$class = 'Controller' . preg_replace('/[^a-zA-Z0-9]/', '', $this->route);
+		
+		// Initialize the class
+		if (is_file($file)) {
+			include_once($file);
+		
+			$controller = new $class($registry);
+		} else {
+			return new \Exception('Error: Could not call ' . $this->route . '/' . $this->method . '!');
+		}
+		
+		$reflection = new ReflectionClass($class);
+		
+		if ($reflection->hasMethod($this->method) && $reflection->getMethod($this->method)->getNumberOfRequiredParameters() <= count($args)) {
+			return call_user_func_array(array($controller, $this->method), $args);
+		} else {
+			return new \Exception('Error: Could not call ' . $this->route . '/' . $this->method . '!');
+		}
+	}
+}
diff --git a/public/system/engine/controller.php b/public/system/engine/controller.php
new file mode 100644
index 0000000..c67890d
--- /dev/null
+++ b/public/system/engine/controller.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Controller class
+*/
+abstract class Controller {
+	protected $registry;
+
+	public function __construct($registry) {
+		$this->registry = $registry;
+	}
+
+	public function __get($key) {
+		return $this->registry->get($key);
+	}
+
+	public function __set($key, $value) {
+		$this->registry->set($key, $value);
+	}
+}
\ No newline at end of file
diff --git a/public/system/engine/event.php b/public/system/engine/event.php
new file mode 100644
index 0000000..d4f92ec
--- /dev/null
+++ b/public/system/engine/event.php
@@ -0,0 +1,97 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Event class
+*
+* Event System Userguide
+* 
+* https://github.com/opencart/opencart/wiki/Events-(script-notifications)-2.2.x.x
+*/
+class Event {
+	protected $registry;
+	protected $data = array();
+	
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$route
+ 	*/
+	public function __construct($registry) {
+		$this->registry = $registry;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$trigger
+	 * @param	object	$action
+	 * @param	int		$priority
+ 	*/	
+	public function register($trigger, Action $action, $priority = 0) {
+		$this->data[] = array(
+			'trigger'  => $trigger,
+			'action'   => $action,
+			'priority' => $priority
+		);
+		
+		$sort_order = array();
+
+		foreach ($this->data as $key => $value) {
+			$sort_order[$key] = $value['priority'];
+		}
+
+		array_multisort($sort_order, SORT_ASC, $this->data);	
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$event
+	 * @param	array	$args
+ 	*/		
+	public function trigger($event, array $args = array()) {
+		foreach ($this->data as $value) {
+			if (preg_match('/^' . str_replace(array('\*', '\?'), array('.*', '.'), preg_quote($value['trigger'], '/')) . '/', $event)) {
+				$result = $value['action']->execute($this->registry, $args);
+
+				if (!is_null($result) && !($result instanceof Exception)) {
+					return $result;
+				}
+			}
+		}
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$trigger
+	 * @param	string	$route
+ 	*/	
+	public function unregister($trigger, $route) {
+		foreach ($this->data as $key => $value) {
+			if ($trigger == $value['trigger'] && $value['action']->getId() == $route) {
+				unset($this->data[$key]);
+			}
+		}			
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	string	$trigger
+ 	*/		
+	public function clear($trigger) {
+		foreach ($this->data as $key => $value) {
+			if ($trigger == $value['trigger']) {
+				unset($this->data[$key]);
+			}
+		}
+	}	
+}
\ No newline at end of file
diff --git a/public/system/engine/loader.php b/public/system/engine/loader.php
new file mode 100644
index 0000000..6c8f93f
--- /dev/null
+++ b/public/system/engine/loader.php
@@ -0,0 +1,264 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Loader class
+*/
+final class Loader {
+	protected $registry;
+
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$registry
+ 	*/
+	public function __construct($registry) {
+		$this->registry = $registry;
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+	 * @param	array	$data
+	 *
+	 * @return	mixed
+ 	*/	
+	public function controller($route, $data = array()) {
+		// Sanitize the call
+		$route = preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route);
+		
+		// Keep the original trigger
+		$trigger = $route;
+		
+		// Trigger the pre events
+		$result = $this->registry->get('event')->trigger('controller/' . $trigger . '/before', array(&$route, &$data));
+		
+		// Make sure its only the last event that returns an output if required.
+		if ($result != null && !$result instanceof Exception) {
+			$output = $result;
+		} else {
+			$action = new Action($route);
+			$output = $action->execute($this->registry, array(&$data));
+		}
+		
+		// Trigger the post events
+		$result = $this->registry->get('event')->trigger('controller/' . $trigger . '/after', array(&$route, &$data, &$output));
+		
+		if ($result && !$result instanceof Exception) {
+			$output = $result;
+		}
+
+		if (!$output instanceof Exception) {
+			return $output;
+		}
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+ 	*/	
+	public function model($route) {
+		// Sanitize the call
+		$route = preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route);
+		
+		if (!$this->registry->has('model_' . str_replace('/', '_', $route))) {
+			$file  = DIR_APPLICATION . 'model/' . $route . '.php';
+			$class = 'Model' . preg_replace('/[^a-zA-Z0-9]/', '', $route);
+			
+			if (is_file($file)) {
+				include_once($file);
+	
+				$proxy = new Proxy();
+				
+				// Overriding models is a little harder so we have to use PHP's magic methods
+				// In future version we can use runkit
+				foreach (get_class_methods($class) as $method) {
+					$proxy->{$method} = $this->callback($this->registry, $route . '/' . $method);
+				}
+				
+				$this->registry->set('model_' . str_replace('/', '_', (string)$route), $proxy);
+			} else {
+				throw new \Exception('Error: Could not load model ' . $route . '!');
+			}
+		}
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+	 * @param	array	$data
+	 *
+	 * @return	string
+ 	*/
+	public function view($route, $data = array()) {
+		// Sanitize the call
+		$route = preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route);
+		
+		// Keep the original trigger
+		$trigger = $route;
+		
+		// Template contents. Not the output!
+		$template = '';
+		
+		// Trigger the pre events
+		$result = $this->registry->get('event')->trigger('view/' . $trigger . '/before', array(&$route, &$data, &$template));
+		
+		// Make sure its only the last event that returns an output if required.
+		if ($result && !$result instanceof Exception) {
+			$output = $result;
+		} else {
+			$template = new Template($this->registry->get('config')->get('template_engine'));
+				
+			foreach ($data as $key => $value) {
+				$template->set($key, $value);
+			}
+
+			$output = $template->render($this->registry->get('config')->get('template_directory') . $route, $this->registry->get('config')->get('template_cache'));		
+		}
+		
+		// Trigger the post events
+		$result = $this->registry->get('event')->trigger('view/' . $trigger . '/after', array(&$route, &$data, &$output));
+		
+		if ($result && !$result instanceof Exception) {
+			$output = $result;
+		}
+		
+		return $output;
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+ 	*/
+	public function library($route) {
+		// Sanitize the call
+		$route = preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route);
+			
+		$file = DIR_SYSTEM . 'library/' . $route . '.php';
+		$class = str_replace('/', '\\', $route);
+
+		if (is_file($file)) {
+			include_once($file);
+
+			$this->registry->set(basename($route), new $class($this->registry));
+		} else {
+			throw new \Exception('Error: Could not load library ' . $route . '!');
+		}
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+ 	*/	
+	public function helper($route) {
+		$file = DIR_SYSTEM . 'helper/' . preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route) . '.php';
+
+		if (is_file($file)) {
+			include_once($file);
+		} else {
+			throw new \Exception('Error: Could not load helper ' . $route . '!');
+		}
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+ 	*/	
+	public function config($route) {
+		$this->registry->get('event')->trigger('config/' . $route . '/before', array(&$route));
+		
+		$this->registry->get('config')->load($route);
+		
+		$this->registry->get('event')->trigger('config/' . $route . '/after', array(&$route));
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	string	$route
+	 * @param	string	$key
+	 *
+	 * @return	array
+ 	*/
+	public function language($route, $key = '') {
+		// Sanitize the call
+		$route = preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route);
+		
+		// Keep the original trigger
+		$trigger = $route;
+				
+		$result = $this->registry->get('event')->trigger('language/' . $trigger . '/before', array(&$route, &$key));
+		
+		if ($result && !$result instanceof Exception) {
+			$output = $result;
+		} else {
+			$output = $this->registry->get('language')->load($route, $key);
+		}
+		
+		$result = $this->registry->get('event')->trigger('language/' . $trigger . '/after', array(&$route, &$key, &$output));
+		
+		if ($result && !$result instanceof Exception) {
+			$output = $result;
+		}
+				
+		return $output;
+	}
+	
+	protected function callback($registry, $route) {
+		return function($args) use($registry, $route) {
+			static $model;
+			
+			$route = preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route);
+
+			// Keep the original trigger
+			$trigger = $route;
+					
+			// Trigger the pre events
+			$result = $registry->get('event')->trigger('model/' . $trigger . '/before', array(&$route, &$args));
+			
+			if ($result && !$result instanceof Exception) {
+				$output = $result;
+			} else {
+				$class = 'Model' . preg_replace('/[^a-zA-Z0-9]/', '', substr($route, 0, strrpos($route, '/')));
+				
+				// Store the model object
+				$key = substr($route, 0, strrpos($route, '/'));
+				
+				if (!isset($model[$key])) {
+					$model[$key] = new $class($registry);
+				}
+				
+				$method = substr($route, strrpos($route, '/') + 1);
+				
+				$callable = array($model[$key], $method);
+	
+				if (is_callable($callable)) {
+					$output = call_user_func_array($callable, $args);
+				} else {
+					throw new \Exception('Error: Could not call model/' . $route . '!');
+				}					
+			}
+			
+			// Trigger the post events
+			$result = $registry->get('event')->trigger('model/' . $trigger . '/after', array(&$route, &$args, &$output));
+			
+			if ($result && !$result instanceof Exception) {
+				$output = $result;
+			}
+						
+			return $output;
+		};
+	}	
+}
\ No newline at end of file
diff --git a/public/system/engine/model.php b/public/system/engine/model.php
new file mode 100644
index 0000000..ae9a97a
--- /dev/null
+++ b/public/system/engine/model.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Model class
+*/
+abstract class Model {
+	protected $registry;
+
+	public function __construct($registry) {
+		$this->registry = $registry;
+	}
+
+	public function __get($key) {
+		return $this->registry->get($key);
+	}
+
+	public function __set($key, $value) {
+		$this->registry->set($key, $value);
+	}
+}
\ No newline at end of file
diff --git a/public/system/engine/proxy.php b/public/system/engine/proxy.php
new file mode 100644
index 0000000..b0a21d0
--- /dev/null
+++ b/public/system/engine/proxy.php
@@ -0,0 +1,54 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Proxy class
+*/
+class Proxy {
+    /**
+     * 
+     *
+     * @param	string	$key
+     */	
+	public function __get($key) {
+		return $this->{$key};
+	}	
+
+    /**
+     * 
+     *
+     * @param	string	$key
+	 * @param	string	$value
+     */	
+	public function __set($key, $value) {
+		 $this->{$key} = $value;
+	}
+	
+	public function __call($key, $args) {
+		$arg_data = array();
+		
+		$args = func_get_args();
+		
+		foreach ($args as $arg) {
+			if ($arg instanceof Ref) {
+				$arg_data[] =& $arg->getRef();
+			} else {
+				$arg_data[] =& $arg;
+			}
+		}
+		
+		if (isset($this->{$key})) {		
+			return call_user_func_array($this->{$key}, $arg_data);	
+		} else {
+			$trace = debug_backtrace();
+			
+			exit('<b>Notice</b>:  Undefined property: Proxy::' . $key . ' in <b>' . $trace[1]['file'] . '</b> on line <b>' . $trace[1]['line'] . '</b>');
+		}
+	}
+}
\ No newline at end of file
diff --git a/public/system/engine/registry.php b/public/system/engine/registry.php
new file mode 100644
index 0000000..0646cc8
--- /dev/null
+++ b/public/system/engine/registry.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Registry class
+*/
+final class Registry {
+	private $data = array();
+
+	/**
+     * 
+     *
+     * @param	string	$key
+	 * 
+	 * @return	mixed
+     */
+	public function get($key) {
+		return (isset($this->data[$key]) ? $this->data[$key] : null);
+	}
+
+    /**
+     * 
+     *
+     * @param	string	$key
+	 * @param	string	$value
+     */	
+	public function set($key, $value) {
+		$this->data[$key] = $value;
+	}
+	
+    /**
+     * 
+     *
+     * @param	string	$key
+	 *
+	 * @return	bool
+     */
+	public function has($key) {
+		return isset($this->data[$key]);
+	}
+}
\ No newline at end of file
diff --git a/public/system/engine/router.php b/public/system/engine/router.php
new file mode 100644
index 0000000..650fb0d
--- /dev/null
+++ b/public/system/engine/router.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ * @package		OpenCart
+ * @author		Daniel Kerr
+ * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license		https://opensource.org/licenses/GPL-3.0
+ * @link		https://www.opencart.com
+*/
+
+/**
+* Router class
+*/
+final class Router {
+	private $registry;
+	private $pre_action = array();
+	private $error;
+	
+	/**
+	 * Constructor
+	 *
+	 * @param	object	$route
+ 	*/
+	public function __construct($registry) {
+		$this->registry = $registry;
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	object	$pre_action
+ 	*/	
+	public function addPreAction(Action $pre_action) {
+		$this->pre_action[] = $pre_action;
+	}
+
+	/**
+	 * 
+	 *
+	 * @param	object	$action
+	 * @param	object	$error
+ 	*/		
+	public function dispatch(Action $action, Action $error) {
+		$this->error = $error;
+
+		foreach ($this->pre_action as $pre_action) {
+			$result = $this->execute($pre_action);
+
+			if ($result instanceof Action) {
+				$action = $result;
+
+				break;
+			}
+		}
+
+		while ($action instanceof Action) {
+			$action = $this->execute($action);
+		}
+	}
+	
+	/**
+	 * 
+	 *
+	 * @param	object	$action
+	 * @return	object
+ 	*/
+	private function execute(Action $action) {
+		$result = $action->execute($this->registry);
+
+		if ($result instanceof Action) {
+			return $result;
+		} 
+		
+		if ($result instanceof Exception) {
+			$action = $this->error;
+			
+			$this->error = null;
+			
+			return $action;
+		}
+	}
+}
\ No newline at end of file