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

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

  Copyright © 2011-2017 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') || !IS_ADMIN){
	header('Location: static_pages/');
}

/**
 * Class ModelCatalogCategory
 */
class ModelCatalogCategory extends Model{
	/**
	 * @param $data
	 * @return int
	 */
	public function addCategory($data){
		$this->db->query("INSERT INTO " . $this->db->table("categories") . " 
						  SET parent_id = '" . (int)$data['parent_id'] . "',
						      sort_order = '" . (int)$data['sort_order'] . "',
						      status = '" . (int)$data['status'] . "',
						      date_modified = NOW(),
						      date_added = NOW()");

		$category_id = $this->db->getLastId();

		foreach ($data['category_description'] as $language_id => $value){
			$this->language->replaceDescriptions('category_descriptions',
					array ('category_id' => (int)$category_id),
					array ($language_id => array (
							'name'             => $value['name'],
							'meta_keywords'    => $value['meta_keywords'],
							'meta_description' => $value['meta_description'],
							'description'      => $value['description']
					)));
		}

		if (isset($data['category_store'])){
			foreach ($data['category_store'] as $store_id){
				$this->db->query("INSERT INTO " . $this->db->table("categories_to_stores") . " SET category_id = '" . (int)$category_id . "', store_id = '" . (int)$store_id . "'");
			}
		}

		if ($data['keyword']){
			$seo_key = SEOEncode($data['keyword'], 'category_id', $category_id);
		} else{
			//Default behavior to save SEO URL keyword from category name in default language
			/**
			 * @var ALanguageManager
			 */
			$seo_key = SEOEncode($data['category_description'][$this->language->getDefaultLanguageID()]['name'],
					'category_id',
					$category_id);
		}
		if ($seo_key){
			$this->language->replaceDescriptions('url_aliases',
					array ('query' => "category_id=" . (int)$category_id),
					array ((int)$this->language->getContentLanguageID() => array ('keyword' => $seo_key)));
		} else{
			$this->db->query("DELETE
							FROM " . $this->db->table("url_aliases") . " 
							WHERE query = 'category_id=" . (int)$category_id . "'
								AND language_id = '" . (int)$this->language->getContentLanguageID() . "'");
		}

		$this->cache->remove('category');

		return $category_id;
	}

	/**
	 * @param int $category_id
	 * @param array $data
	 */
	public function editCategory($category_id, $data){

		$fields = array ('parent_id', 'sort_order', 'status');
		$update = array ('date_modified = NOW()');
		foreach ($fields as $f){
			if (isset($data[$f]))
				$update[] = $f . " = '" . $this->db->escape($data[$f]) . "'";
		}
		if (!empty($update)) $this->db->query("UPDATE " . $this->db->table("categories") . " SET " . implode(',', $update) . " WHERE category_id = '" . (int)$category_id . "'");

		if (!empty($data['category_description'])){
			foreach ($data['category_description'] as $language_id => $value){
				$update = array ();
				if (isset($value['name'])){
					$update["name"] = $value['name'];
				}
				if (isset($value['description'])){
					$update["description"] = $value['description'];
				}
				if (isset($value['meta_keywords'])){
					$update["meta_keywords"] = $value['meta_keywords'];
				}
				if (isset($value['meta_description'])){
					$update["meta_description"] = $value['meta_description'];
				}
				if (!empty($update)){
					// insert or update
					$this->language->replaceDescriptions('category_descriptions',
							array ('category_id' => (int)$category_id),
							array ($language_id => $update));
				}
			}
		}

		if (isset($data['category_store'])){
			$this->db->query("DELETE FROM " . $this->db->table("categories_to_stores") . " WHERE category_id = '" . (int)$category_id . "'");
			foreach ($data['category_store'] as $store_id){
				$this->db->query("INSERT INTO " . $this->db->table("categories_to_stores") . " SET category_id = '" . (int)$category_id . "', store_id = '" . (int)$store_id . "'");
			}
		}

		if (isset($data['keyword'])){
			$data['keyword'] = SEOEncode($data['keyword']);
			if ($data['keyword']){
				$this->language->replaceDescriptions('url_aliases',
						array ('query' => "category_id=" . (int)$category_id),
						array ((int)$this->language->getContentLanguageID() => array ('keyword' => $data['keyword'])));
			} else{
				$this->db->query("DELETE
								FROM " . $this->db->table("url_aliases") . " 
								WHERE query = 'category_id=" . (int)$category_id . "'
									AND language_id = '" . (int)$this->language->getContentLanguageID() . "'");
			}

		}

		$this->cache->remove('category');
		$this->cache->remove('product');

	}

	/**
	 * @param int $category_id
	 */
	public function deleteCategory($category_id){
		$this->db->query("DELETE FROM " . $this->db->table("categories") . " WHERE category_id = '" . (int)$category_id . "'");
		$this->db->query("DELETE FROM " . $this->db->table("category_descriptions") . " WHERE category_id = '" . (int)$category_id . "'");
		$this->db->query("DELETE FROM " . $this->db->table("categories_to_stores") . " WHERE category_id = '" . (int)$category_id . "'");
		$this->db->query("DELETE FROM " . $this->db->table("url_aliases") . " WHERE query = 'category_id=" . (int)$category_id . "'");
		$this->db->query("DELETE FROM " . $this->db->table("products_to_categories") . " WHERE category_id = '" . (int)$category_id . "'");

		//delete resources
		$rm = new AResourceManager();
		$resources = $rm->getResourcesList(array ('object_name' => 'categories', 'object_id' => (int)$category_id));
		foreach ($resources as $r){
			$rm->unmapResource('categories', $category_id, $r['resource_id']);
			//if resource became orphan - delete it
			if (!$rm->isMapped($r['resource_id'])){
				$rm->deleteResource($r['resource_id']);
			}
		}
		//remove layout
		$lm = new ALayoutManager();
		$lm->deletePageLayout('pages/product/category', 'path', $category_id);

		//delete children categories
		$query = $this->db->query("SELECT category_id
									FROM " . $this->db->table("categories") . "
									WHERE parent_id = '" . (int)$category_id . "'");

		foreach ($query->rows as $result){
			$this->deleteCategory($result['category_id']);
		}

		$this->cache->remove('category');
		$this->cache->remove('product');
	}

	/**
	 * @param int $category_id
	 * @return array
	 */
	public function getCategory($category_id){
		$query = $this->db->query("SELECT DISTINCT *,
										(SELECT keyword
										FROM " . $this->db->table("url_aliases") . " 
										WHERE query = 'category_id=" . (int)$category_id . "'
											AND language_id='" . (int)$this->language->getContentLanguageID() . "' ) AS keyword
									FROM " . $this->db->table("categories") . " 
									WHERE category_id = '" . (int)$category_id . "'");
		return $query->row;
	}

	/**
	 * @param int $parent_id
	 * @param int $store_id
	 * @return array
	 */
	public function getCategories($parent_id, $store_id = null){
		$language_id = $this->language->getContentLanguageID();
		$cache_key = 'category.' . $parent_id . '.store_' . $store_id . '_lang_' . $language_id;
		$category_data = $this->cache->pull($cache_key);

		if ($category_data === false){
			$category_data = array ();
			$sql = "SELECT *
					FROM " . $this->db->table("categories") . " c
					LEFT JOIN " . $this->db->table("category_descriptions") . " cd
					ON (c.category_id = cd.category_id) ";
			if (!is_null($store_id)){
				$sql .= "RIGHT JOIN " . $this->db->table("categories_to_stores") . " cs ON (c.category_id = cs.category_id AND cs.store_id = '" . (int)$store_id . "')";
			}

			$sql .= "WHERE c.parent_id = '" . (int)$parent_id . "'
						AND cd.language_id = '" . (int)$language_id . "'
					ORDER BY c.sort_order, cd.name ASC";
			$query = $this->db->query($sql);

			foreach ($query->rows as $result){
				$category_data[] = array (
						'category_id' => $result['category_id'],
						'parent_id'   => $result['parent_id'],
						'name'        => $this->getPath($result['category_id'], $language_id),
						'status'      => $result['status'],
						'sort_order'  => $result['sort_order']
				);

				$category_data = array_merge($category_data, $this->getCategories($result['category_id'], $store_id));
			}

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

		return $category_data;
	}

	/**
	 * @param array $data
	 * @param string $mode
	 * @return array|int
	 */
	public function getCategoriesData($data, $mode = 'default'){

		if ($data['language_id']){
			$language_id = (int)$data['language_id'];
		} else{
			$language_id = (int)$this->language->getContentLanguageID();
		}

		if ($data['store_id']){
			$store_id = (int)$data['store_id'];
		} else{
			$store_id = (int)$this->config->get('config_store_id');
		}

		if ($mode == 'total_only'){
			$total_sql = 'count(*) as total';
		} else{
			$total_sql = "*,
						  c.category_id,
						  (SELECT count(*) as cnt
						  	FROM " . $this->db->table('products_to_categories') . " p
						  	WHERE p.category_id = c.category_id) as products_count ";
		}
		$where = (isset($data['parent_id']) ? "WHERE c.parent_id = '" . (int)$data['parent_id'] . "'" : '');
		$sql = "SELECT " . $total_sql . "
				FROM " . $this->db->table('categories') . " c
				LEFT JOIN " . $this->db->table('category_descriptions') . " cd
					ON (c.category_id = cd.category_id AND cd.language_id = '" . $language_id . "')
				INNER JOIN " . $this->db->table('categories_to_stores') . " cs
					ON (c.category_id = cs.category_id AND cs.store_id = '" . $store_id . "')
				" . $where;

		if (!empty($data['subsql_filter'])){
			$sql .= ($where ? " AND " : 'WHERE ') . $data['subsql_filter'];
		}

		//If for total, we done building the query
		if ($mode == 'total_only'){
			$query = $this->db->query($sql);
			return $query->row['total'];
		}

		$sort_data = array (
				'name'       => 'cd.name',
				'status'     => 'c.status',
				'sort_order' => 'c.sort_order'
		);

		if (isset($data['sort']) && in_array($data['sort'], array_keys($sort_data))){
			$sql .= " ORDER BY " . $data['sort'];
		} else{
			$sql .= " ORDER BY c.sort_order, cd.name ";
		}

		if (isset($data['order']) && ($data['order'] == 'DESC')){
			$sql .= " DESC";
		} else{
			$sql .= " ASC";
		}

		if (isset($data['start']) || isset($data['limit'])){
			if ($data['start'] < 0){
				$data['start'] = 0;
			}

			if ($data['limit'] < 1){
				$data['limit'] = 20;
			}

			$sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
		}

		$query = $this->db->query($sql);
		$category_data = array ();
		foreach ($query->rows as $result){
			$category_data[] = array (
					'category_id'    => $result['category_id'],
					'name'           => $this->getPath($result['category_id'], $language_id),
					'basename'       => $result['name'],
					'status'         => $result['status'],
					'sort_order'     => $result['sort_order'],
					'products_count' => $result['products_count']

			);
		}
		return $category_data;
	}

	/**
	 * @return array
	 */
	public function getParents(){
		$query = $this->db->query(
				"SELECT DISTINCT c.parent_id, cd.name
			 FROM " . $this->db->table("categories") . " c
			 LEFT JOIN " . $this->db->table("categories") . " c1 ON (c.parent_id = c1.category_id)
			 LEFT JOIN " . $this->db->table("category_descriptions") . " cd ON (c1.category_id = cd.category_id)
			 WHERE cd.language_id = '" . (int)$this->language->getContentLanguageID() . "'
			 ORDER BY c.sort_order, cd.name ASC");
		$result = array ();
		foreach ($query->rows as $r){
			$result[$r['parent_id']] = $r['name'];
		}

		return $result;
	}

	/**
	 * @return array
	 */
	public function getLeafCategories(){
		$query = $this->db->query(
				"SELECT t1.category_id as category_id FROM " . $this->db->table("categories") . " AS t1 LEFT JOIN " . $this->db->table("categories") . " as t2
			 ON t1.category_id = t2.parent_id WHERE t2.category_id IS NULL");
		$result = array ();
		foreach ($query->rows as $r){
			$result[$r['category_id']] = $r['category_id'];
		}

		return $result;
	}

	/**
	 * @param int $category_id
	 * @param int $language_id
	 * @return string
	 */
	public function getPath($category_id, $language_id = 0){
		$category_id = (int)$category_id;
		$language_id = (int)$language_id;
		if (!$language_id){
			$language_id = (int)$this->language->getContentLanguageID();
		}
		$query = $this->db->query("SELECT name, parent_id
		                            FROM " . $this->db->table("categories") . " c
		                            LEFT JOIN " . $this->db->table("category_descriptions") . " cd
		                                ON (c.category_id = cd.category_id)
		                            WHERE c.category_id = '" . (int)$category_id . "' AND cd.language_id = '" . $language_id . "'
		                            ORDER BY c.sort_order, cd.name ASC");

		$category_info = $query->row;

		if ($category_info['parent_id']){
			return $this->getPath($category_info['parent_id'], $language_id) . $this->language->get('text_separator') . $category_info['name'];
		} else{
			return $category_info['name'];
		}
	}

	/**
	 * @param int $category_id
	 * @return array
	 */
	public function getCategoryDescriptions($category_id){
		$category_description_data = array ();

		$query = $this->db->query("SELECT * FROM " . $this->db->table("category_descriptions") . " WHERE category_id = '" . (int)$category_id . "'");

		foreach ($query->rows as $result){
			$category_description_data[$result['language_id']] = array (
					'name'             => $result['name'],
					'meta_keywords'    => $result['meta_keywords'],
					'meta_description' => $result['meta_description'],
					'description'      => $result['description']
			);
		}

		return $category_description_data;
	}

	/**
	 * @param int $category_id
	 * @return array
	 */
	public function getCategoryStores($category_id){
		$category_store_data = array ();
		$rows = $this->getCategoryStoresInfo($category_id);
		foreach ($rows as $result){
			$category_store_data[] = $result['store_id'];
		}

		return $category_store_data;
	}

	/**
	 * @param int $category_id
	 * @return array
	 */
	public function getCategoryStoresInfo($category_id){
		$query = $this->db->query("SELECT c2s.*,
											s.name as store_name,
											ss.`value` as store_url,
											sss.`value` as store_ssl_url
									FROM " . $this->db->table("categories_to_stores") . " c2s
									LEFT JOIN " . $this->db->table("stores") . " s ON s.store_id = c2s.store_id
									LEFT JOIN " . $this->db->table("settings") . " ss
										ON (ss.store_id = c2s.store_id AND ss.`key`='config_url')
									LEFT JOIN " . $this->db->table("settings") . " sss
										ON (sss.store_id = c2s.store_id AND sss.`key`='config_ssl_url')
									WHERE category_id = '" . (int)$category_id . "'");
		return $query->rows;
	}

	/**
	 * @param array $data
	 * @return array
	 */
	public function getTotalCategories($data = array ()){
		return $this->getCategoriesData($data, 'total_only');
	}
}