<?php 
class AjaxthisHelper extends Helper
{
	var $helpers = array('Ajax');
	
	/**
	*Public : Call to controller action for view intial parameters (illegal, not compliant with cakePhp functionnal rules)
	**/
	function initThis($ajaxCall = null,$ajaxAction = null,$ajaxParams = array()){
		$params = $this->view->controller->Ajaxthis->initThis($ajaxCall,$ajaxAction,$ajaxParams);
		if(!isset($params)){
			return null;
		}
		else{
			return $params;
		}
	}
	
	/**
	*Public : Returning path to dummy ajax method with given params + the name of element to render and requested params
	**/
	function ajaxThis($ajaxCall = null,$ajaxAction = null,$ajaxViews = null,$ajaxParams = array()){
		if(!empty($ajaxAction)){
			return array(
				'url' => '/'.$this->view->controller->params['controller'].'/ajaxThis/'.base64_encode($ajaxCall).'/'.base64_encode($ajaxAction).'/'.$this->_encodeAjaxViews($ajaxViews).'/'.base64_encode(http_build_query($ajaxParams, '', '&')),
				'update' => $this->_filterAjaxViews($ajaxViews)
				);
		}
		else{
			return array(
				'url' => '/'.$this->view->controller->params['controller'].'/ajaxThis/'.base64_encode($ajaxCall).'/'.$this->_encodeAjaxViews($ajaxViews).'/'.base64_encode(http_build_query($ajaxParams, '', '&')),
				'update' => $this->_filterAjaxViews($ajaxViews)
				);
		}	
	}

	/**
	*Private : Encoding ajaxViews array
	**/
	function _encodeAjaxViews($ajaxViews){
		$ajaxViews = $this->_setAjaxViews($ajaxViews);
		if(!empty($ajaxViews)){
			return base64_encode($ajaxViews);
		}
		else{
			return $ajaxViews;
		}
	}
	
	/**
	*Private : Filter ajaxViews array
	**/
	function _filterAjaxViews($ajaxViews){
		$ajaxViews = $this->_setAjaxViews($ajaxViews);
		if(strpos($ajaxViews , '&')===false){
			if(!(strpos($ajaxViews,'\\')===false)){
				return stripslashes($ajaxViews);
			}
			else{
				return $ajaxViews;
			}
		}
		else{
			$ajaxViews = explode('&' , $ajaxViews);
			foreach($ajaxViews as &$view){
				$view = stripslashes($view);
				if(!(strpos($view,'\\')===false)){
					$view = stripslashes($view);
					//$view=substr($view,strpos($view,'\\')+1,strlen($view));
				}
			}
			return $ajaxViews;
		}
	}
	
	/**
	*Private : set corresponding ajaxViews
	**/
	function _setAjaxViews($ajaxViews,$separator = '&'){
		if (!empty($ajaxViews)){
			if(!is_array($ajaxViews)){
				return $ajaxViews;
			}
			else{
				$commonViews = '';
				$specificViews = '';
				foreach($ajaxViews as $key => $view){
					if($key == 'common'){
						if(!is_array($view)){
							$commonViews .= $view.$separator;
						}
						else{
							foreach($view as $commonView){
								$commonViews .= $commonView.$separator;
							}
						}
					}
					else{
						if(strtolower($key) == strtolower($this->view->controller->params['controller'])){
							if(!is_array($view)){
								$specificViews .= $view.$separator;
							}
							else{
								foreach($view as $action => $specificView){
									if(strtolower($action) == strtolower($this->view->controller->params['action'])){
										if(!is_array($specificView)){
											$specificViews .= $specificView.$separator;
										}
										else{
											foreach($specificView as $subview){
												$specificViews .= $subview.$separator;
											}
										}
									}
								}
							}
						}
					}
				}
				if($commonViews!=''){
					if($specificViews!=''){
						return substr($commonViews.$specificViews,0,strlen($commonViews.$specificViews)-1);
					}
					else{
						return substr($commonViews,0,strlen($commonViews)-1);
					}
				}
				else{
					if($specificViews!=''){
						return substr($specificViews,0,strlen($specificViews)-1);
					}
					else{
						return null;
					}
				}
			}
		}
		else{
			return null;
		}
	}
}
?>