<?php  
/*------------------------------------------------------------------------------
  $Id$

  AbanteCart, Ideal OpenSource Ecommerce Solution
  http://www.AbanteCart.com

  Copyright © 2011-2014 Belavier Commerce LLC

  This source file is subject to Open Software License (OSL 3.0)
  License details is bundled with this package in the file LICENSE.txt.
  It is also available at this URL:
  <http://www.opensource.org/licenses/OSL-3.0>

 UPGRADE NOTE:
   Do not edit or add to this file if you wish to upgrade AbanteCart to newer
   versions in the future. If you wish to customize AbanteCart for your
   needs please refer to http://www.AbanteCart.com for more information.
------------------------------------------------------------------------------*/
if (! defined ( 'DIR_CORE' )) {
	header ( 'Location: static_pages/' );
}
class ControllerBlocksCategory extends AController {
	public $data = array();
	protected $category_id = 0;
	protected $path = array();
	protected $selected_root_id = array();

	public function main() {

        //init controller data
        $this->extensions->hk_InitData($this,__FUNCTION__);

    	$this->view->assign('heading_title', $this->language->get('heading_title') );
		
		$this->loadModel('catalog/category');
		
		if (isset($this->request->get['path'])) {
			$this->path = explode('_', $this->request->get['path']);
			$this->category_id = end($this->path);
		}
		$this->view->assign('selected_category_id', $this->category_id);
		$this->view->assign('path', $this->request->get['path']);
		
		//load main lavel categories
		$all_categories = $this->model_catalog_category->getAllCategories();
		$this->view->assign('category_list', $this->_buildCategoryTree($all_categories));

		// framed needs to show frames for generic block.
		//If tpl used by listing block framed was set by listing block settings
		$this->view->assign('block_framed',true);

		//Load nested categories and with all details based on whole categories list array in $this->data
		$this->data['resource_obj'] = new AResource('image');
		$this->view->assign('categories', $this->_buildNestedCategoryList());
		
		$this->processTemplate();

        //init controller data
        $this->extensions->hk_UpdateData($this,__FUNCTION__);
  	}

	/** Function builds one dimentional category tree based on given array
	 *
	 * @param array $all_categories
	 * @param int $parent_id
	 * @param string $path
	 * @return array
	 */

	private function _buildCategoryTree($all_categories = array(), $parent_id=0, $path=''){
		$output = array();
		foreach($all_categories as $category){
			if($parent_id!=$category['parent_id']){ continue; }
			$category['path'] = $path ? $path.'_'.$category['category_id'] : $category['category_id'];
			$category['parents'] = explode("_",$category['path']);
			$category['level'] = sizeof($category['parents'])-1; //digin' level
			if($category['category_id']==$this->category_id){ //mark root
				$this->selected_root_id = $category['parents'][0];
			}
			$output[] = $category;
			$output = array_merge($output,$this->_buildCategoryTree($all_categories,$category['category_id'], $category['path']));
		}
		if($parent_id==0){
			$this->data['all_categories'] = $output; //place result into memory for future usage (for menu. see below)
			// cut list and expand only selected tree branch
			$cutted_tree = array();
			foreach($output as $category){
				if($category['parent_id']!=0 && !in_array($this->selected_root_id,$category['parents'])){ continue; }
				$category['href'] = $this->html->getSEOURL('product/category', '&path='.$category['path'], '&encode');
				$cutted_tree[] = $category;
			}
			return $cutted_tree;
		}else{
			return $output;
		}
	}

	/** Function builds one multi-dimentional (nested) category tree for menu
	 *
	 * @param int $parent_id
	 * @return array
	 */
	private function _buildNestedCategoryList($parent_id=0){
		/**
		 * @var $resource AResource
		 */
		$resource = $this->data['resource_obj'];
		$output = array();
		foreach($this->data['all_categories'] as $category){
			if( $category['parent_id'] != $parent_id ){ continue; }
			$category['children'] = $this->_buildNestedCategoryList($category['category_id']);
			$thumbnail = $resource->getMainThumb( 'categories',
													$category['category_id'],
													(int)$this->config->get('config_image_category_width'),
													(int)$this->config->get('config_image_category_height'),
													true);
			$category['thumb'] = $thumbnail['thumb_url'];

			$category['product_count'] = $this->model_catalog_category->getCategoriesProductsCount($category['parents']);
			$category['brands'] = $this->model_catalog_category->getCategoriesBrands($category['parents']);
			$category['href'] = $this->html->getSEOURL('product/category', '&path=' . $category['path'], '&encode');
			//mark current category
			if(in_array($category['category_id'], $this->path)) {
				$category['current'] = true;
			}
			$output[] = $category;
		}
		return $output;
	}

}