<?php
/**
* Basic table for VMF (VirtueMart Frame)
* @package 	VirtueMart Frame
* @author		Max Milbers
* @copyright 	Copyright (C) 2015 VirtueMart Team and the authors. All rights reserved.
* @license 	LGPL Lesser Lesser General Public License version 2, or later see LICENSE.txt
* @version 	$Id: about.php 2641 2010-11-09 19:25:13Z milbo $
*/

if(!class_exists('vBasicModel'))
	require(VMPATH_ADMIN .'/vmf/vbasicmodel.php');

class vController extends vBasicModel implements vIController{
	/**
	 * The base path of the controller
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _basePath.
	 */
	protected $basePath;

	/**
	 * The default view for the display method.
	 *
	 * @var    string
	 * @since  12.2
	 */
	protected $default_view;

	/**
	 * The mapped task that was performed.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _doTask.
	 */
	protected $doTask;

	/**
	 * Redirect message.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _message.
	 */
	protected $message;

	/**
	 * Redirect message type.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _messageType.
	 */
	protected $messageType;

	/**
	 * Array of class methods
	 *
	 * @var    array
	 * @since  12.2
	 * @note   Replaces _methods.
	 */
	protected $methods;

	/**
	 * The name of the controller
	 *
	 * @var    array
	 * @since  12.2
	 * @note   Replaces _name.
	 */
	protected $name;


	/**
	 * URL for redirection.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _redirect.
	 */
	protected $redirect;

	/**
	 * Current or most recently performed task.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _task.
	 */
	protected $task;

	/**
	 * Array of class methods to call for a given task.
	 *
	 * @var    array
	 * @since  12.2
	 * @note   Replaces _taskMap.
	 */
	protected $taskMap;

	/**
	 * Hold a JInput object for easier access to the input variables.
	 *
	 * @var    JInput
	 * @since  12.2
	 */
	protected $input;


	/**
	 * Instance container containing the views.
	 *
	 * @var    array
	 * @since  3.4
	 */
	protected static $views;


	/**
	 * Create the filename for a resource.
	 *
	 * @param   string  $type   The resource type to create the filename for.
	 * @param   array   $parts  An associative array of filename information. Optional.
	 *
	 * @return  string  The filename.
	 *
	 * @note    Replaced _createFileName.
	 * @since   12.2
	 */
	protected static function createFileName($type, $parts = array())
	{
		$filename = '';

		switch ($type)
		{
			case 'controller':
				if (!empty($parts['format']))
				{
					if ($parts['format'] == 'html')
					{
						$parts['format'] = '';
					}
					else
					{
						$parts['format'] = '.' . $parts['format'];
					}
				}
				else
				{
					$parts['format'] = '';
				}

				$filename = strtolower($parts['name'] . $parts['format'] . '.php');
				break;

			case 'view':
				if (!empty($parts['type']))
				{
					$parts['type'] = '.' . $parts['type'];
				}
				else
				{
					$parts['type'] = '';
				}

				$filename = strtolower($parts['name'] . '/view' . $parts['type'] . '.php');
				break;
		}

		return $filename;
	}

	/*public static function getInstance($type, $prefix = '', $config = array(), $single = false) {

		return parent::getInstance($type, $prefix, $config, true);
	}*/


	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 * Recognized key values include 'name', 'default_task', 'model_path', and
	 * 'view_path' (this list is not meant to be comprehensive).
	 *
	 * @since   12.2
	 */
	public function __construct($config = array())
	{
		$this->methods = array();
		$this->message = null;
		$this->messageType = 'message';
		//$this->paths = array();
		$this->redirect = null;
		$this->taskMap = array();

		if (defined('JDEBUG') && JDEBUG)
		{
			JLog::addLogger(array('text_file' => 'jcontroller.log.php'), JLog::ALL, array('controller'));
		}

		if(!(vFactory::$_db)){
			vFactory::getDbo();
		}

		$this->input = vFactory::getApplication()->input;

		// Determine the methods to exclude from the base class.
		$xMethods = get_class_methods('vController');

		// Get the public methods in this class using reflection.
		$r = new ReflectionClass($this);
		$rMethods = $r->getMethods(ReflectionMethod::IS_PUBLIC);

		foreach ($rMethods as $rMethod)
		{
			$mName = $rMethod->getName();

			// Add default display method if not explicitly declared.
			if (!in_array($mName, $xMethods) || $mName == 'display')
			{
				$this->methods[] = strtolower($mName);

				// Auto register the methods as tasks.
				$this->taskMap[strtolower($mName)] = $mName;
			}
		}

		// Set the view name
		if (empty($this->_name))
		{
			$this->_name = $this->getName();
		}
		$this->basePath = VMPATH_COMPONENT;
		//$this->addIncludePath($this->basePath . '/views','view');

		$this->registerDefaultTask('display');
		$this->default_view = $this->getName();

		vBasicModel::addIncludePath(VMPATH_ADMIN.'/vmf/html','html');
	}


	/**
	 * Method to check whether an ID is in the edit list.
	 *
	 * @param   string   $context  The context for the session storage.
	 * @param   integer  $id       The ID of the record to add to the edit list.
	 *
	 * @return  boolean  True if the ID is in the edit list.
	 *
	 * @since   12.2
	 */
	protected function checkEditId($context, $id)
	{
		if ($id)
		{
			$app = vFactory::getApplication();
			$values = (array) $app->getUserState($context . '.id');

			$result = in_array((int) $id, $values);

			if (defined('JDEBUG') && JDEBUG)
			{
				JLog::add(
				sprintf(
				'Checking edit ID %s.%s: %d %s',
				$context,
				$id,
				(int) $result,
				str_replace("\n", ' ', print_r($values, 1))
				),
				JLog::INFO,
				'controller'
				);
			}

			return $result;
		}
		else
		{
			// No id for a new item.
			return true;
		}
	}

	/**
	 * Fallback to keep compatibility
	 * @param $path
	 * @return $this
	 */
	public function addViewPath($path) {
		self::addIncludePath($path, 'view');
		return $this;
	}

	/**
	 * Method to load and return a view object. This method first looks in the
	 * current template directory for a match and, failing that, uses a default
	 * set path to load the view class file.
	 *
	 * Note the "name, prefix, type" order of parameters, which differs from the
	 * "name, type, prefix" order used in related public methods.
	 *
	 * @param   string  $name    The name of the view.
	 * @param   string  $prefix  Optional prefix for the view class name.
	 * @param   string  $type    The type of view.
	 * @param   array   $config  Configuration array for the view. Optional.
	 *
	 * @return  mixed  View object on success; null or error result on failure.
	 *
	 * @since   12.2
	 * @note    Replaces _createView.
	 * @throws  Exception
	 */
	//protected function createView($name, $prefix = '', $type = '', $config = array())
	static public function createView($name,$prefix,$config = array()) {

		$type = isset($config['type'])?$config['type']:'html';
		// Clean the view name
		$view = preg_replace('/[^A-Z0-9_]/i', '', $name);

		$type = preg_replace('/[^A-Z0-9_\.-]/i', '', $type);
		$type = strtolower($type);
		$prefix = preg_replace('/[^A-Z0-9_]/i', '', $prefix);

		$class = $prefix . ucfirst($view);

		//$single = false;
		if(empty(self::$_loadedClasses[$class])){

			//$admin =vFactory::getApplication()->isAdmin();
			$manage = vRequest::getCmd ( 'managing',false);

			//We add the viewpath
			if($manage){
				self::addIncludePath(VMPATH_ADMIN.'/views/'.$name,'view');
			} else {
				self::addIncludePath(VMPATH_COMPONENT.'/views/'.$name,'view');
			}

			if (!class_exists($class)) {
				self::loader('view.'.$type, 'view',$class);
			}

			if (class_exists($class)){
				self::$_loadedClasses[$class] = self::getInstance($name,$prefix );

				$name = strtolower($view);

				if($manage){
					self::$_loadedClasses[$class]->addLayoutPath($name, VMPATH_ADMIN .'/views/'. $name . '/tmpl');
					$unoverridable = array('category', 'manufacturer', 'user','virtuemart');    //This views have the same name and must not be overridable
					if(!in_array( $name, $unoverridable )) {
						if(!class_exists( 'VmTemplate' )) require(VMPATH_SITE.'/helpers/vmtemplate.php');
						$template = VmTemplate::getDefaultTemplate();
						self::$_loadedClasses[$class]->addLayoutPath( $name, VMPATH_ROOT.'/templates/'.$template['template'].'/html/com_virtuemart/'.$name, 'view' );
					}
				} else {
					self::$_loadedClasses[$class]->addLayoutPath($name, VMPATH_COMPONENT.'/views/'. $name . '/tmpl');
					$template = vFactory::getApplication()->getTemplate();
					self::$_loadedClasses[$class]->addLayoutPath($name, VMPATH_BASE . '/templates/' . $template . '/html/com_virtuemart/'. $name);
				}
			} else {
				vmEcho::$echoDebug=1;
				vmdebug('createView '.$class.' not available' ,self::$_paths);
				vmWarn(vmText::sprintf('JLIB_APPLICATION_ERROR_MODELCLASS_NOT_FOUND', $class));
				return false;
			}
		}

		return self::$_loadedClasses[$class];

	}

	/**
	 * Typical view method for MVC based architecture
	 *
	 * This function is provide as a default implementation, in most cases
	 * you will need to override it in your own controllers.
	 *
	 * @param   boolean  $cachable   If true, the view output will be cached
	 * @param   array    $urlparams  An array of safe url parameters and their variable types, for valid values see {@link JFilterInput::clean()}.
	 *
	 * @return  JControllerLegacy  A JControllerLegacy object to support chaining.
	 *
	 * @since   12.2
	 */
	public function display($cachable = false, $urlparams = array())
	{
		$document = vFactory::getDocument();
		$viewType = $document->getType();
		$viewName = $this->input->get('view', $this->default_view);
		$viewLayout = $this->input->get('layout', 'default', 'string');

		$view = $this->getView($viewName, $viewType, '', array('base_path' => $this->basePath, 'layout' => $viewLayout));

		$view->document = $document;

		$conf = vFactory::getConfig();

		// Display the view
		if ($cachable && $viewType != 'feed' && $conf->get('caching') >= 1)
		{
			$option = $this->input->get('option');
			$cache = vFactory::getCache($option, 'view');

			if (is_array($urlparams))
			{
				$app = vFactory::getApplication();

				if (!empty($app->registeredurlparams))
				{
					$registeredurlparams = $app->registeredurlparams;
				}
				else
				{
					$registeredurlparams = new stdClass;
				}

				foreach ($urlparams as $key => $value)
				{
					// Add your safe url parameters with variable type as value {@see JFilterInput::clean()}.
					$registeredurlparams->$key = $value;
				}

				$app->registeredurlparams = $registeredurlparams;
			}

			$cache->get($view, 'display');
		}
		else
		{
			$view->display();
		}

		return $this;
	}

	/**
	 * Execute a task by triggering a method in the derived class.
	 *
	 * @param   string  $task  The task to perform. If no matching task is found, the '__default' task is executed, if defined.
	 *
	 * @return  mixed   The value returned by the called method, false in error case.
	 *
	 * @since   12.2
	 * @throws  Exception
	 */
	public function execute($task)
	{
		$this->task = $task;

		$task = strtolower($task);

		if (isset($this->taskMap[$task]))
		{
			$doTask = $this->taskMap[$task];
		}
		elseif (isset($this->taskMap['__default']))
		{
			$doTask = $this->taskMap['__default'];
		}
		else
		{
			throw new Exception(vmText::sprintf('JLIB_APPLICATION_ERROR_TASK_NOT_FOUND', $task), 404);
		}

		// Record the actual task being fired
		$this->doTask = $doTask;

		return $this->$doTask();
	}


	/**
	 * Method to get the controller name
	 *
	 * The dispatcher name is set by default parsed using the classname, or it can be set
	 * by passing a $config['name'] in the class constructor
	 *
	 * @return  string  The name of the dispatcher
	 *
	 * @since   12.2
	 * @throws  Exception
	 */
	public function getName()
	{
		if (empty($this->_name))
		{
			$r = null;

			if (!preg_match('/(.*)Controller/i', get_class($this), $r))
			{
				throw new Exception(vmText::_('JLIB_APPLICATION_ERROR_CONTROLLER_GET_NAME'), 500);
			}

			$this->_name = strtolower($r[1]);
		}

		return $this->_name;
	}

	/**
	 * Get the last task that is being performed or was most recently performed.
	 *
	 * @return  string  The task that is being performed or was most recently performed.
	 *
	 * @since   12.2
	 */
	public function getTask()
	{
		return $this->task;
	}

	/**
	 * Gets the available tasks in the controller.
	 *
	 * @return  array  Array[i] of task names.
	 *
	 * @since   12.2
	 */
	public function getTasks()
	{
		return $this->methods;
	}

	/**
	 * Method to get a reference to the current view and load it if necessary.
	 *
	 * @param   string  $name    The view name. Optional, defaults to the controller name.
	 * @param   string  $type    The view type. Optional.
	 * @param   string  $prefix  The class prefix. Optional.
	 * @param   array   $config  Configuration array for view. Optional.
	 *
	 * @return  JViewLegacy  Reference to the view or an error.
	 *
	 * @since   12.2
	 * @throws  Exception
	 */
	public function getView($name = '', $type = '', $prefix = '', $config = array())
	{
		// @note We use self so we only access stuff in this class rather than in all classes.
		if (!isset(self::$views)) {
			self::$views = array();
		}

		if (empty($name)) {
			$name = $this->getName();
		}

		if (empty($prefix)) {
			$prefix = $this->getName() . 'View';
		}

		if(!class_exists('vView'))
			require(VMPATH_ADMIN .'/vmf/vview.php');

		if (empty(self::$views[$name][$type][$prefix])) {
			if (self::$views[$name][$type][$prefix] = $this->createView($name,$prefix,array('type'=>$type))) {
				//self::$views[$name][$type][$prefix] = & $view;
			} else {
				$response = 500;
				$app = vFactory::getApplication();

				/*
				 * With URL rewriting enabled on the server, all client
				 * requests for non-existent files are being forwarded to
				 * Joomla.  Return a 404 response here and assume the client
				 * was requesting a non-existent file for which there is no
				 * view type that matches the file's extension (the most
				 * likely scenario).
				 */
				if ($app->get('sef_rewrite')) {
					$response = 404;
				}

				//throw new Exception(vmText::sprintf('JLIB_APPLICATION_ERROR_VIEW_NOT_FOUND', $name, $type, $prefix), $response);
			}
		}

		return self::$views[$name][$type][$prefix];
	}

	/**
	 * Method to add a record ID to the edit list.
	 *
	 * @param   string   $context  The context for the session storage.
	 * @param   integer  $id       The ID of the record to add to the edit list.
	 *
	 * @return  void
	 *
	 * @since   12.2
	 */
	protected function holdEditId($context, $id)
	{
		$app = vFactory::getApplication();
		$values = (array) $app->getUserState($context . '.id');

		// Add the id to the list if non-zero.
		if (!empty($id))
		{
			array_push($values, (int) $id);
			$values = array_unique($values);
			$app->setUserState($context . '.id', $values);

			if (defined('JDEBUG') && JDEBUG)
			{
				JLog::add(
				sprintf(
				'Holding edit ID %s.%s %s',
				$context,
				$id,
				str_replace("\n", ' ', print_r($values, 1))
				),
				JLog::INFO,
				'controller'
				);
			}
		}
	}

	/**
	 * Redirects the browser or returns false if no redirect is set.
	 *
	 * @return  boolean  False if no redirect exists.
	 *
	 * @since   12.2
	 */
	public function redirect()
	{
		if ($this->redirect)
		{
			$app = vFactory::getApplication();

			// Enqueue the redirect message
			$app->enqueueMessage($this->message, $this->messageType);

			// Execute the redirect
			$app->redirect($this->redirect);
		}

		return false;
	}

	/**
	 * Register the default task to perform if a mapping is not found.
	 *
	 * @param   string  $method  The name of the method in the derived class to perform if a named task is not found.
	 *
	 * @return  JControllerLegacy  A JControllerLegacy object to support chaining.
	 *
	 * @since   12.2
	 */
	public function registerDefaultTask($method)
	{
		$this->registerTask('__default', $method);

		return $this;
	}

	/**
	 * Register (map) a task to a method in the class.
	 *
	 * @param   string  $task    The task.
	 * @param   string  $method  The name of the method in the derived class to perform for this task.
	 *
	 * @return  JControllerLegacy  A JControllerLegacy object to support chaining.
	 *
	 * @since   12.2
	 */
	public function registerTask($task, $method)
	{
		if (in_array(strtolower($method), $this->methods))
		{
			$this->taskMap[strtolower($task)] = $method;
		}

		return $this;
	}

	/**
	 * Unregister (unmap) a task in the class.
	 *
	 * @param   string  $task  The task.
	 *
	 * @return  JControllerLegacy  This object to support chaining.
	 *
	 * @since   12.2
	 */
	public function unregisterTask($task)
	{
		unset($this->taskMap[strtolower($task)]);

		return $this;
	}

	/**
	 * Method to check whether an ID is in the edit list.
	 *
	 * @param   string   $context  The context for the session storage.
	 * @param   integer  $id       The ID of the record to add to the edit list.
	 *
	 * @return  void
	 *
	 * @since   12.2
	 */
	protected function releaseEditId($context, $id)
	{
		$app = vFactory::getApplication();
		$values = (array) $app->getUserState($context . '.id');

		// Do a strict search of the edit list values.
		$index = array_search((int) $id, $values, true);

		if (is_int($index))
		{
			unset($values[$index]);
			$app->setUserState($context . '.id', $values);

			if (defined('JDEBUG') && JDEBUG)
			{
				JLog::add(
				sprintf(
				'Releasing edit ID %s.%s %s',
				$context,
				$id,
				str_replace("\n", ' ', print_r($values, 1))
				),
				JLog::INFO,
				'controller'
				);
			}
		}
	}


	/**
	 * Set a URL for browser redirection.
	 *
	 * @param   string  $url   URL to redirect to.
	 * @param   string  $msg   Message to display on redirect. Optional, defaults to value set internally by controller, if any.
	 * @param   string  $type  Message type. Optional, defaults to 'message' or the type set by a previous call to setMessage.
	 *
	 * @return  JControllerLegacy  This object to support chaining.
	 *
	 * @since   12.2
	 */
	public function setRedirect($url, $msg = null, $type = null)
	{
		$this->redirect = $url;

		if ($msg !== null)
		{
			// Controller may have set this directly
			$this->message = $msg;
		}

		// Ensure the type is not overwritten by a previous call to setMessage.
		if (empty($type))
		{
			if (empty($this->messageType))
			{
				$this->messageType = 'message';
			}
		}
		// If the type is explicitly set, set it.
		else
		{
			$this->messageType = $type;
		}

		return $this;
	}
}