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

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

  Copyright © 2011-2016 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/');
}

/** @noinspection PhpUndefinedClassInspection
 * @property ModelToolImage $model_tool_image
 * @property  ExtensionsAPI $extensions
 * @property  ALoader $load
 * @property  AHtml $html
 * @property  AConfig $config
 * @property  ACache $cache
 * @property  ADB $db
 * @property  ALanguageManager $language
 */
class AResource{
	/**
	 * @var Registry
	 */
	protected $registry;
	/**
	 * @var string
	 */
	protected $type;
	/**
	 * @var int
	 */
	protected $type_id;
	/**
	 * @var string
	 */
	protected $type_dir;
	/**
	 * @var string
	 */
	protected $type_icon;
	/**
	 * @var string
	 */
	protected $access_type;
	/**
	 * @var array
	 */
	protected $file_types;
	/**
	 * @var array
	 */
	public $data = array ();

	public $obj_list = array ('products', 'categories', 'manufacturers', 'product_option_value');

	/**
	 * @param string $type
	 */
	public function __construct($type){
		$this->registry = Registry::getInstance();
		//NOTE: Storefront can not access all resource at once. Resource type required
		if ($type){
			$this->type = $type;
			//get type details
			$this->_loadType();
		}

		if (!$this->type_id){
			$message = "Error: Incorrect or missing resource type ";
			$error = new AError ($message);
			$error->toLog()->toDebug();
		}

	}

	public function __get($key){
		return $this->registry->get($key);
	}

	public function __set($key, $value){
		$this->registry->set($key, $value);
	}

	protected function _loadType(){
		$cache_key = 'resources.' . $this->type;
		$cache_key = preg_replace('/[^a-zA-Z0-9\.]/', '', $cache_key) . '.store_' . (int)$this->config->get('config_store_id');
		$type_data = $this->cache->pull($cache_key);
		if ($type_data === false || empty($type_data['type_id'])){
			$sql = "SELECT * "
					. "FROM " . $this->db->table("resource_types") . " "
					. "WHERE type_name = '" . $this->db->escape($this->type) . "'";
			$query = $this->db->query($sql);
			$type_data = $query->row;
			$this->cache->push($cache_key, $type_data);
		}
		$this->type_id = (int)$type_data['type_id'];
		$this->type_dir = $type_data['default_directory'];
		$this->type_icon = $type_data['default_icon'];
		$this->access_type = $type_data['access_type'];
		$this->file_types = $type_data['file_types'];
	}

	public function getTypeId(){
		return $this->type_id;
	}

	public function getType(){
		return $this->type;
	}

	public function getTypeDir(){
		return $this->type_dir;
	}

	public function getTypeIcon(){
		return $this->type_icon;
	}

	public function getTypeAccess(){
		return $this->access_type;
	}

	public function getTypeFileTypes(){
		return $this->file_types;
	}

	/**
	 * @param int $resource_id
	 * @return string
	 */
	public function getHexPath($resource_id){
		$result = rtrim(chunk_split(dechex($resource_id), 2, '/'), '/');
		return $result;
	}

	/**
	 * @param string $path
	 * @return null|number
	 */
	public function getIdFromHexPath($path){
		if (empty($path)){
			return null;
		}
		if (strpos($path, '/') !== false){
			$ext = pathinfo($path, PATHINFO_EXTENSION);
			$path = str_replace(array ('.' . $ext, '/'), '', $path);
			$result = hexdec($path);
		} else{
			$result = $this->_getIdByName($path);
		}
		//function must return only integer!
		if (!is_int($result)){
			return null;
		}
		return $result;
	}

	/**
	 * @param string $filename
	 * @return int
	 */
	protected function _getIdByName($filename){
		$sql = "SELECT resource_id
                FROM " . $this->db->table("resource_descriptions") . " 
                WHERE name like '%" . $this->db->escape($filename) . "%'
                ORDER BY language_id";
		$query = $this->db->query($sql);
		return (int)$query->row['resource_id'];
	}

	/**
	 * @param int $resource_id
	 * @param int $language_id
	 * @return array
	 */
	public function getResource($resource_id, $language_id = 0){
		//Return resource details
		$resource_id = (int)$resource_id;
		if (!$resource_id){
			return array ();
		}
		if (!$language_id){
			$language_id = $this->config->get('storefront_language_id');
		}

		//attempt to load cache 
		$cache_key = 'resources.' . $resource_id;
		$cache_key = preg_replace('/[^a-zA-Z0-9\.]/', '', $cache_key);
		$resource = $this->cache->pull($cache_key);
		if ($resource === false){
			$where = "WHERE rl.resource_id = " . $this->db->escape($resource_id);
			$sql = "SELECT
                        rd.*,
                        COALESCE(rd.resource_path,rdd.resource_path) as resource_path,
				        COALESCE(rd.resource_code,rdd.resource_code) as resource_code,
                        rt.type_name,
                        rt.default_icon
                    FROM " . $this->db->table("resource_library") . " rl " . "
                    LEFT JOIN " . $this->db->table("resource_descriptions") . " rd
                        ON (rl.resource_id = rd.resource_id)
                    LEFT JOIN " . $this->db->table("resource_descriptions") . " rdd
                        ON (rl.resource_id = rdd.resource_id AND rdd.language_id = '" . $this->language->getDefaultLanguageID() . "')
                    LEFT JOIN " . $this->db->table("resource_types") . " rt
                        ON (rl.type_id = rt.type_id )
                    " . $where;

			$query = $this->db->query($sql);
			$result = $query->rows;
			$resource = array ();
			foreach ($result as $r){
				$resource[$r['language_id']] = $r;
			}
			$this->cache->push($cache_key, $resource);
		}

		$result = array ();
		if (!empty($resource[$language_id])){
			$result = $resource[$language_id];
		} else if (!empty($resource)){
			reset($resource);
			list($key, $result) = each($resource);
		}

		return $result;
	}

	/**
	 * function returns URL to resource.
	 * @deprecated since 1.2.7
	 * @param int $resource_id - NOTE: can be zero to show default_image
	 * @param int $width
	 * @param int $height
	 * @param string|int $language_id
	 * @return string
	 * @throws AException
	 */
	public function getResourceThumb($resource_id, $width, $height, $language_id = ''){
		$width = (int)$width;
		$height = (int)$height;
		if (!$width || !$height){
			return '';
		}

		if (!$language_id){
			$language_id = $this->config->get('storefront_language_id');
		}

		$resource = array ();

		if ($resource_id){
			$resource = $this->getResource($resource_id, $language_id);
			//check if resource have descriptions. if not - try to get it for default language
			if (!$resource['name']){
				$resource = $this->getResource($resource_id, $this->language->getDefaultLanguageID());
			}
		}

		switch($this->type){
			case 'image' :
				if (!$resource['default_icon']){
					$resource['default_icon'] = 'no_image.jpg';
				}
				break;
			default :
				if (!$resource['default_icon']){
					$resource['default_icon'] = 'no_image.jpg';
				}
				$this->load->model('tool/image');
				$this->model_tool_image->resize($resource['default_icon'], $width, $height);
				return $this->model_tool_image->resize($resource['default_icon'], $width, $height);
		}

		if (!empty($resource['resource_code'])){
			return $resource['resource_code'];
		}

		$old_image = DIR_RESOURCE . $this->type_dir . $resource['resource_path'];
		$info = pathinfo($old_image);
		$extension = $info['extension'];

		// returns ico-file as is
		if ($extension == 'ico'){
			return $this->buildResourceURL($resource['resource_path'], 'full');
		}

		if (!is_file($old_image)){
			$this->load->model('tool/image');
			$this->model_tool_image->resize($resource['default_icon'], $width, $height);
			return $this->model_tool_image->resize($resource['default_icon'], $width, $height);
		}

		$name = preg_replace('/[^a-zA-Z0-9]/', '_', $resource['name']);
		//Build thumbnails path similar to resource library path
		$new_image = 'thumbnails/' . dirname($resource['resource_path']) . '/' . $name . '-' . $resource['resource_id'] . '-' . $width . 'x' . $height . '.' . $extension;
		$this->_check_create_thumb($new_image, $old_image, $width, $height);

		//do retina version
		if ($this->config->get('config_retina_enable')){
			$new_image2x = 'thumbnails/' . dirname($resource['resource_path']) . '/' . $name . '-' . $resource['resource_id'] . '-' . $width . 'x' . $height . '@2x.' . $extension;
			$this->_check_create_thumb($new_image2x, $old_image, $width * 2, $height * 2);
		}

		$this->extensions->hk_ProcessData($this, __FUNCTION__);
		$http_path = $this->data['http_dir'];
		if (!$http_path){
			if (HTTPS === true){
				$http_path = HTTPS_IMAGE;
			} else{
				$http_path = HTTP_IMAGE;
			}
		}

		return $http_path . $new_image;
	}

	/**
	 * function returns URL to resource.
	 * @since 1.2.7
	 * @param array $resource_info - resource details
	 * @param int $width
	 * @param int $height
	 * @param string|int $language_id
	 * @return string
	 * @throws AException
	 */
	public function getResourceURL($resource_info = array (), $width, $height, $language_id = ''){
		$width = (int)$width;
		$height = (int)$height;
		if (!$width || !$height){
			return '';
		}

		if (!$language_id){
			$language_id = $this->config->get('storefront_language_id');
		}

		$resource_id = (int)$resource_info['resource_id'];

		if (!$resource_info['name'] && $resource_id){
			$resource = $this->getResource($resource_id, $language_id);
			//check if resource have descriptions. if not - try to get it for default language
			if (!$resource['name']){
				$resource = $this->getResource($resource_id, $this->language->getDefaultLanguageID());
			}
		} else{
			$resource = $resource_info;
		}

		switch($this->type){
			case 'image' :
				if (!$resource['default_icon']){
					$resource['default_icon'] = 'no_image.jpg';
				}
				break;
			default :
				if (!$resource['default_icon']){
					$resource['default_icon'] = 'no_image.jpg';
				}
				$this->load->model('tool/image');
				$this->model_tool_image->resize($resource['default_icon'], $width, $height);
				return $this->model_tool_image->resize($resource['default_icon'], $width, $height);
		}

		if (!empty($resource['resource_code'])){
			return $resource['resource_code'];
		}

		$old_image = DIR_RESOURCE . $this->type_dir . $resource['resource_path'];
		$info = pathinfo($old_image);
		$extension = $info['extension'];

		// returns ico-file as is
		if ($extension == 'ico'){
			return $this->buildResourceURL($resource['resource_path'], 'full');
		}

		if (!is_file($old_image)){
			$this->load->model('tool/image');
			$this->model_tool_image->resize($resource['default_icon'], $width, $height);
			return $this->model_tool_image->resize($resource['default_icon'], $width, $height);
		}

		$name = preg_replace('/[^a-zA-Z0-9]/', '_', $resource['name']);
		//Build thumbnails path similar to resource library path
		$new_image = 'thumbnails/' . dirname($resource['resource_path']) . '/' . $name . '-' . $resource['resource_id'] . '-' . $width . 'x' . $height . '.' . $extension;
		$this->_check_create_thumb($new_image, $old_image, $width, $height);

		//do retina version
		if ($this->config->get('config_retina_enable')){
			$new_image2x = 'thumbnails/' . dirname($resource['resource_path']) . '/' . $name . '-' . $resource['resource_id'] . '-' . $width . 'x' . $height . '@2x.' . $extension;
			$this->_check_create_thumb($new_image2x, $old_image, $width * 2, $height * 2);
		}

		$this->extensions->hk_ProcessData($this, __FUNCTION__);
		$http_path = $this->data['http_dir'];
		if (!$http_path){
			if (HTTPS === true){
				$http_path = HTTPS_IMAGE;
			} else{
				$http_path = HTTP_IMAGE;
			}
		}

		return $http_path . $new_image;
	}

	protected function _check_create_thumb($filename, $resource_filename, $width, $height){
		if (!file_exists(DIR_IMAGE . $filename) || (filemtime($resource_filename) > filemtime(DIR_IMAGE . $filename))){
			$path = '';
			$directories = explode('/', dirname(str_replace('../', '', $filename)));
			foreach ($directories as $directory){
				$path = $path . '/' . $directory;

				if (!file_exists(DIR_IMAGE . $path)){
					@mkdir(DIR_IMAGE . $path, 0777);
					chmod(DIR_IMAGE . $path, 0777);
				}
			}

			$image = new AImage($resource_filename);
			$image->resizeAndSave(DIR_IMAGE . $filename,
					$width,
					$height,
					array (
							'quality' => $this->config->get('config_image_quality')
					));
			unset($image);
		}
	}

	/**
	 * @param string $resource_path (hashed resource path from database)
	 * @param string $mode full (with http and domain) or relative (from store url up)
	 * @return array
	 */
	public function buildResourceURL($resource_path, $mode = 'full'){

		if ($mode == 'full'){
			$this->extensions->hk_ProcessData($this, __FUNCTION__);
			$http_path = $this->data['http_dir'];
			if (!$http_path){
				$http_path = HTTPS_DIR_RESOURCE;
			}
			return $http_path . $this->type_dir . $resource_path;
		} else{
			return "/resources/" . $this->type_dir . $resource_path;
		}
	}

	/**
	 * @param string $object_name
	 * @param string $object_id
	 * @param int $language_id
	 * @return array
	 */
	public function getResources($object_name, $object_id, $language_id = 0){
		//Allow to load resources only for 1 object and id combination
		if (!has_value($object_name) || !has_value($object_id)){
			return array ();
		}

		if (!$language_id){
			$language_id = $this->config->get('storefront_language_id');
		}

		$store_id = (int)$this->config->get('config_store_id');

		//attempt to load cache 
		$cache_key = 'resources.' . $this->type . '.' . $object_name . '.' . $object_id;
		$cache_key = preg_replace('/[^a-zA-Z0-9\.]/', '', $cache_key) . '.store_' . $store_id . '_lang_' . $language_id;
		$resources = $this->cache->pull($cache_key);
		if ($resources !== false){
			return $resources;
		}

		$where = "WHERE rm.object_name = '" . $this->db->escape($object_name) . "' "
				. " and rm.object_id = '" . $this->db->escape($object_id) . "' "
				. " and rl.type_id = " . $this->db->escape($this->type_id);

		$sql = "SELECT
					rl.resource_id, 
					rd.name,
					rd.title,
					rd.description,
					COALESCE(rd.resource_path,rdd.resource_path) as resource_path,
					COALESCE(rd.resource_code,rdd.resource_code) as resource_code,
					rm.default,
					rm.sort_order	  
				FROM " . $this->db->table("resource_library") . " rl " . "
				LEFT JOIN " . $this->db->table("resource_map") . " rm
					ON rm.resource_id = rl.resource_id " . "
				LEFT JOIN " . $this->db->table("resource_descriptions") . " rd
					ON (rl.resource_id = rd.resource_id AND rd.language_id = '" . $language_id . "')
				LEFT JOIN " . $this->db->table("resource_descriptions") . " rdd
					ON (rl.resource_id = rdd.resource_id AND rdd.language_id = '" . $this->language->getDefaultLanguageID() . "')
				" . $where . "
				ORDER BY rm.sort_order ASC";

		$query = $this->db->query($sql);
		$resources = $query->rows;
		$this->cache->push($cache_key, $resources);
		return $resources;
	}

	/**
	 * @return array
	 */
	public function getAllResourceTypes(){
		//attempt to load cache
		$cache_key = 'resources.types.store_' . (int)$this->config->get('config_store_id');
		$types = $this->cache->pull($cache_key);
		if ($types !== false){
			return $types;
		}

		$sql = "SELECT * FROM " . $this->db->table("resource_types") . " ";
		$query = $this->db->query($sql);
		$types = $query->rows;
		$this->cache->push($cache_key, $types);

		return $types;
	}

	//TODO: define where all object types will be kept and fetch them from storage
	/**
	 * @return array
	 */
	public function getAllObjects(){
		return $this->obj_list;
	}

	/**
	 * method returns all resources of object by it's id and name
	 * @param string $object_name
	 * @param string $object_id
	 * @param array $sizes
	 * @param int $limit
	 * @param bool $noimage
	 * @return array
	 */
	public function getResourceAllObjects($object_name, $object_id, $sizes = array ('main' => array (), 'thumb' => array (), 'thumb2' => array ()), $limit = 0, $noimage = true){
		if (!$object_id || !$object_name) return array ();
		$limit = (int)$limit;
		$results = $this->getResources($object_name, $object_id);
		if (!$results && !$limit){
			return array ();
		}

		if ($limit && !$noimage){
			$slice_limit = $limit > sizeof($results) ? sizeof($results) : $limit;
			$results = array_slice($results, 0, $slice_limit);
		}

		$this->load->model('tool/image');

		if (!$sizes || !is_array($sizes['main']) || !is_array($sizes['thumb'])){
			if (!is_array($sizes['main'])){
				$sizes['main'] = array ('width'  => $this->config->get('config_image_product_width'),
				                        'height' => $this->config->get('config_image_product_height'));
			}
			if (!is_array($sizes['thumb'])){
				$sizes['thumb'] = array ('width'  => $this->config->get('config_image_thumb_width'),
				                         'height' => $this->config->get('config_image_thumb_height'));
			}
		}

		$resources = array ();
		if (!$results && $noimage){
			$results = array (array ('resource_path' => 'no_image.jpg'));
		}

		if (!$results){
			return array ();
		}

		foreach ($results as $k => $result){
			$thumb_url = $thumb2_url = '';
			$resource_info = $result['resource_id'] ? $this->getResource($result['resource_id'], $this->config->get('storefront_language_id')) : $result;
			$origin = $resource_info['resource_path'] ? 'internal' : 'external';

			if ($origin == 'internal'){
				$this->extensions->hk_ProcessData($this, __FUNCTION__);
				$http_path = $this->data['http_dir'];
				if (!$http_path){
					$http_path = HTTPS_DIR_RESOURCE;
				}

				if ($this->getType() == 'image'){
					$res_full_path = DIR_RESOURCE . $this->getTypeDir() . $result['resource_path'];
					if ($sizes['main']){
						$main_url = $this->getResourceURL(
								$result,
								$sizes['main']['width'],
								$sizes['main']['height']
						);
					} else{
						// return href for image with size as-is
						$main_url = $http_path . $this->getTypeDir() . $result['resource_path'];
						//get original image size
						$actual_sizes = get_image_size($res_full_path);
						$sizes['main'] = $actual_sizes;
					}
					if ($sizes['thumb']){
						$thumb_url = $this->getResourceURL(
								$result,
								$sizes['thumb']['width'],
								$sizes['thumb']['height']
						);
					}

					if (!$thumb_url && $sizes['thumb']){
						$thumb_url = $this->model_tool_image->resize(
								$result['resource_path'],
								$sizes['thumb']['width'],
								$sizes['thumb']['height']
						);
					}
					//thumb2 - big thumbnails
					if ($sizes['thumb2']){
						$thumb2_url = $this->getResourceURL(
								$result,
								$sizes['thumb2']['width'],
								$sizes['thumb2']['height']
						);
					}
					if (!$thumb2_url && $sizes['thumb2']){
						$thumb2_url = $this->model_tool_image->resize(
								$result['resource_path'],
								$sizes['thumb2']['width'],
								$sizes['thumb2']['height']
						);
					}

				} else{
					$main_url = $http_path . $this->getTypeDir() . $result['resource_path'];
				}

				$resources[$k] = array ('origin'       => $origin,
				                        'main_url'     => $main_url,
				                        'main_width'   => $sizes['main']['width'],
				                        'main_height'  => $sizes['main']['height'],
				                        'main_html'    => $this->html->buildResourceImage(array ('url'    => $http_path . 'image/' . $result['resource_path'],
				                                                                                 'width'  => $sizes['main']['width'],
				                                                                                 'height' => $sizes['main']['height'],
				                                                                                 'attr'   => 'alt="' . $resource_info['title'] . '"')),
				                        'thumb_url'    => $thumb_url,
				                        'thumb_width'  => $sizes['thumb']['width'],
				                        'thumb_height' => $sizes['thumb']['height'],
				                        'thumb_html'   => $this->html->buildResourceImage(array ('url'    => $thumb_url,
				                                                                                 'width'  => $sizes['thumb']['width'],
				                                                                                 'height' => $sizes['thumb']['height'],
				                                                                                 'attr'   => 'alt="' . $resource_info['title'] . '"')));
				if ($sizes['thumb2']){
					$resources[$k]['thumb2_url'] = $thumb2_url;
					$resources[$k]['thumb2_width'] = $sizes['thumb2']['width'];
					$resources[$k]['thumb2_height'] = $sizes['thumb2']['height'];
					$resources[$k]['thumb2_html'] = $this->html->buildResourceImage(array ('url'    => $thumb2_url,
					                                                                       'width'  => $sizes['thumb2']['width'],
					                                                                       'height' => $sizes['thumb2']['height'],
					                                                                       'attr'   => 'alt="' . $resource_info['title'] . '"'));
				}
				$resources[$k]['description'] = $resource_info['description'];
				$resources[$k]['title'] = $resource_info['title'];
			} else{
				$resources[$k] = array ('origin'      => $origin,
				                        'main_html'   => $resource_info['resource_code'],
				                        'thumb_html'  => $resource_info['resource_code'],
				                        'title'       => $resource_info['title'],
				                        'description' => $resource_info['description']);
			}
		}

		if ($limit == 1){
			$resources = $resources[0];
		}

		return $resources;
	}

	/**
	 * @param string $object_name
	 * @param string $object_id
	 * @param int $width
	 * @param int $height
	 * @param bool $noimage
	 * @return array
	 */
	public function getMainThumb($object_name, $object_id, $width, $height, $noimage = true){
		$sizes = array ('thumb' => array ('width' => $width, 'height' => $height));
		$result = $this->getResourceAllObjects($object_name, $object_id, $sizes, 1, $noimage);
		$output = array ();
		if ($result){
			$output = array ('origin'      => $result['origin'],
			                 'thumb_html'  => $result['thumb_html'],
			                 'title'       => $result['title'],
			                 'description' => $result['description'],
			                 'width'       => $width,
			                 'height'      => $height
			);
			if ($result['thumb_url']) $output['thumb_url'] = $result['thumb_url'];
		}
		return $output;
	}

	/**
	 * @since 1.2.7
	 * @param string $object_name
	 * @param array $object_ids
	 * @param int $width
	 * @param int $height
	 * @param bool|true $noimage
	 * @return array
	 * @throws AException
	 */
	public function getMainThumbList($object_name, $object_ids = array (), $width = 0, $height = 0, $noimage = true){
		$width = (int)$width;
		$height = (int)$height;
		if (!$object_name || !$object_ids || !is_array($object_ids) || !$width || !$height){
			return array ();
		}

		//cleanup ids
		$tmp = array ();
		foreach ($object_ids as $object_id){
			$object_id = (int)$object_id;
			if ($object_id){
				$tmp[] = $object_id;
			}
		}
		$object_ids = array_unique($tmp);
		unset($tmp);

		if(!$object_ids){
			return array();
		}

		$language_id = $this->language->getLanguageID();
		$default_language_id = $this->language->getDefaultLanguageID();

		$store_id = (int)$this->config->get('config_store_id');
		//attempt to load cache
		$cache_key = 'resources.list.' . $this->type . '.' . $object_name . '.' .$width.'x'.$height.'.'. md5(implode('.', $object_ids));
		$cache_key = preg_replace('/[^a-zA-Z0-9\.]/', '', $cache_key) . '.store_' . $store_id . '_lang_' . $language_id;
		$output = $this->cache->pull($cache_key);
		if ($output !== false){
			return $output;
		}

		//get resource list
		$sql = "
			SELECT
				rm.object_id,
				rl.resource_id,
				COALESCE(rd.name,rdd.name) as name,
	            COALESCE(rd.title,rdd.title) as title,
	            COALESCE(rd.description,rdd.description) as description,
				COALESCE(rd.resource_path,rdd.resource_path) as resource_path,
				COALESCE(rd.resource_code,rdd.resource_code) as resource_code,
				rm.default,
				rm.sort_order
			FROM " . $this->db->table("resource_library") . " rl " . "
			LEFT JOIN " . $this->db->table("resource_map") . " rm
				ON rm.resource_id = rl.resource_id " . "
			LEFT JOIN " . $this->db->table("resource_descriptions") . " rd
				ON (rl.resource_id = rd.resource_id
					AND rd.language_id = '" . $language_id . "')
			LEFT JOIN " . $this->db->table("resource_descriptions") . " rdd
				ON (rl.resource_id = rdd.resource_id
					AND rdd.language_id = '" . $default_language_id . "')
			WHERE rm.object_name = '" . $this->db->escape($object_name) . "'
				 AND rl.type_id = " . $this->type_id . "
				 AND rm.object_id IN (" . implode(", ", $object_ids) . ")
			ORDER BY rm.object_id ASC, rm.sort_order ASC, rl.resource_id ASC";
		$result = $this->db->query($sql);

		$output = $selected_ids = array ();
		foreach ($result->rows as $row){
			$object_id = $row['object_id'];
			//filter only first resource per object (main)
			if (isset($output[$object_id])){
				continue;
			}

			$origin = $row['resource_path'] ? 'internal' : 'external';
			$output[$object_id] = array (
					'origin'      => $origin,
					'title'       => $row['title'],
					'description' => $row['description'],
					'width'       => $width,
					'height'      => $height
			);
			//for external resources
			if ($origin == 'external'){
				$output[$object_id]['thumb_html'] = $row['resource_code'];
			} //for internal resources
			else{
				$thumb_url = $this->getResourceURL($row, $width, $height, $language_id);
				$output[$object_id]['thumb_html'] = $this->html->buildResourceImage(
						array (
								'url'    => $thumb_url,
								'width'  => $width,
								'height' => $height,
								'attr'   => 'alt="' . $row['title'] . '"'));
				$output[$object_id]['thumb_url'] = $thumb_url;
			}
			$selected_ids[] = $object_id;
		}

		//if some of objects have no thumbnail
		$diff = array_diff($object_ids, $selected_ids);
		if ($diff){

			foreach ($diff as $object_id){
				//when need to show default image
				if ($noimage){
					$thumb_url = $this->getResourceURL(array ('resource_id' => 0), $width, $height, $language_id);
					$output[$object_id] = array (
							'origin'      => 'internal',
							'title'       => '',
							'description' => '',
							'width'       => $width,
							'height'      => $height,
							'thumb_html'  => $this->html->buildResourceImage(
									array (
											'url'    => $thumb_url,
											'width'  => $width,
											'height' => $height,
											'attr'   => 'alt=""'))
					);
				} else{
					$output[$object_id] = array ();
				}
			}
		}

		$this->cache->push($cache_key, $output);
		return $output;
	}

	/**
	 * @param string $object_name
	 * @param string $object_id
	 * @param int $width
	 * @param int $height
	 * @param bool $noimage
	 * @return array
	 */
	public function getMainImage($object_name, $object_id, $width, $height, $noimage = true){
		$sizes = array ('main' => array ('width' => $width, 'height' => $height));
		$result = $this->getResourceAllObjects($object_name, $object_id, $sizes, 1, $noimage);
		$output = array ();
		if ($result){
			$output = array ('origin'      => $result['origin'],
			                 'main_html'   => $result['main_html'],
			                 'description' => $result['description'],
			                 'title'       => $result['title'],
			                 'width'       => $width,
			                 'height'      => $height
			);
			if ($result['main_url']) $output['main_url'] = $result['main_url'];
		}
		return $output;
	}

}