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<?php
/*
* 2007-2014 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2014 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

/**
 * @since 1.5.0
 */
class ShopCore extends ObjectModel
{
	/** @var int ID of shop group */
	public	$id_shop_group;

	/** @var int ID of shop category */
	public	$id_category;

	/** @var int ID of shop theme */
	public	$id_theme;

	/** @var string Shop name */
	public	$name;

	public	$active = true;
	public	$deleted;

	/** @var string Shop theme name (read only) */
	public $theme_name;

	/** @var string Shop theme directory (read only) */
	public $theme_directory;

	/** @var string Physical uri of main url (read only) */
	public $physical_uri;

	/** @var string Virtual uri of main url (read only) */
	public $virtual_uri;

	/** @var string Domain of main url (read only) */
	public $domain;

	/** @var string Domain SSL of main url (read only) */
	public $domain_ssl;

	/** @var ShopGroup Shop group object */
	protected $group;

	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'shop',
		'primary' => 'id_shop',
		'fields' => array(
			'active' => 		array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
			'deleted' => 		array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
			'name' => 			array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'required' => true, 'size' => 64),
			'id_theme' => 		array('type' => self::TYPE_INT, 'required' => true),
			'id_category' => 	array('type' => self::TYPE_INT, 'required' => true),
			'id_shop_group' => 	array('type' => self::TYPE_INT, 'required' => true),
		),
	);

	/** @var array List of shops cached */
	protected static $shops;

	protected static $asso_tables = array();
	protected static $id_shop_default_tables = array();
	protected static $initialized = false;

	protected $webserviceParameters = array(
		'fields' => array(
			'id_shop_group' => array('xlink_resource' => 'shop_groups'),
			'id_category' => array(),
			'id_theme' => array(),
		),
	);

	/** @var int Store the current context of shop (CONTEXT_ALL, CONTEXT_GROUP, CONTEXT_SHOP) */
	protected static $context;

	/** @var int ID shop in the current context (will be empty if context is not CONTEXT_SHOP) */
	protected static $context_id_shop;

	/** @var int ID shop group in the current context (will be empty if context is CONTEXT_ALL) */
	protected static $context_id_shop_group;

	/**
	 * There are 3 kinds of shop context : shop, group shop and general
	 */
	const CONTEXT_SHOP = 1;
	const CONTEXT_GROUP = 2;
	const CONTEXT_ALL = 4;

	/**
	 * Some data can be shared between shops, like customers or orders
	 */
	const SHARE_CUSTOMER = 'share_customer';
	const SHARE_ORDER = 'share_order';
	const SHARE_STOCK = 'share_stock';

	/**
	 * On shop instance, get its theme and URL data too
	 *
	 * @param int $id
	 * @param int $id_lang
	 * @param int $id_shop
	 */
	public function __construct($id = null, $id_lang = null, $id_shop = null)
	{
		parent::__construct($id, $id_lang, $id_shop);
		if ($this->id)
			$this->setUrl();
	}
	
	/**
	 * Initialize an array with all the multistore associations in the database
	 */
	protected static function init()
	{
		Shop::$id_shop_default_tables = array('product', 'category');
		
		$asso_tables = array(
			'carrier' => array('type' => 'shop'),
			'carrier_lang' => array('type' => 'fk_shop'),
			'category' => array('type' => 'shop'),
			'category_lang' => array('type' => 'fk_shop'),
			'cms' => array('type' => 'shop'),
			'contact' => array('type' => 'shop'),
			'country' => array('type' => 'shop'),
			'currency' => array('type' => 'shop'),
			'employee' => array('type' => 'shop'),
			'hook_module' => array('type' => 'fk_shop'),
			'hook_module_exceptions' =>	array('type' => 'fk_shop', 'primary' => 'id_hook_module_exceptions'),
			'image' => array('type' => 'shop'),
			'lang' => array('type' => 'shop'),
			'meta_lang' => array('type' => 'fk_shop'),
			'module' => array('type' => 'shop'),
			'module_currency' => array('type' => 'fk_shop'),
			'module_country' => array('type' => 'fk_shop'),
			'module_group' => array('type' => 'fk_shop'),
			'product' => array('type' => 'shop'),
			'product_attribute' => array('type' => 'shop'),
			'product_lang' => array('type' => 'fk_shop'),
			'referrer' => array('type' => 'shop'),
			'scene' => array('type' => 'shop'),
			'store' => array('type' => 'shop'),
			'webservice_account' => array('type' => 'shop'),
			'warehouse' => array('type' => 'shop'),
			'stock_available' => array('type' => 'fk_shop', 'primary' => 'id_stock_available'),
			'carrier_tax_rules_group_shop' => array('type' => 'fk_shop'),
			'attribute' => array('type' => 'shop'),
			'feature' => array('type' => 'shop'),
			'group' => array('type' => 'shop'),
			'attribute_group' => array('type' => 'shop'),
			'tax_rules_group' => array('type' => 'shop'),
			'zone' => array('type' => 'shop'),
			'manufacturer' => array('type' => 'shop'),
			'supplier' => array('type' => 'shop'),
		);
		
		foreach ($asso_tables as $table_name => $table_details)
			Shop::addTableAssociation($table_name, $table_details);

		Shop::$initialized = true;
	}

	public function setUrl()
	{
		$cache_id = 'Shop::setUrl_'.(int)$this->id;
		if (!Cache::isStored($cache_id))
		{
			$row = Db::getInstance()->getRow('
			SELECT su.physical_uri, su.virtual_uri, su.domain, su.domain_ssl, t.id_theme, t.name, t.directory
			FROM '._DB_PREFIX_.'shop s
			LEFT JOIN '._DB_PREFIX_.'shop_url su ON (s.id_shop = su.id_shop)
			LEFT JOIN '._DB_PREFIX_.'theme t ON (t.id_theme = s.id_theme)
			WHERE s.id_shop = '.(int)$this->id.'
			AND s.active = 1 AND s.deleted = 0 AND su.main = 1');
			Cache::store($cache_id, $row);
		}
		$row = Cache::retrieve($cache_id);
		if (!$row)
			return false;

		$this->theme_id = $row['id_theme'];
		$this->theme_name = $row['name'];
		$this->theme_directory = $row['directory'];
		$this->physical_uri = $row['physical_uri'];
		$this->virtual_uri = $row['virtual_uri'];
		$this->domain = $row['domain'];
		$this->domain_ssl = $row['domain_ssl'];

		return true;
	}

	/**
	 * Add a shop, and clear the cache
	 *
	 * @param bool $autodate
	 * @param bool $null_values
	 * @return bool
	 */
	public function add($autodate = true, $null_values = false)
	{
		$res = parent::add($autodate, $null_values);
		Shop::cacheShops(true);
		return $res;
	}

	public function associateSuperAdmins()
	{
		$super_admins = Employee::getEmployeesByProfile(_PS_ADMIN_PROFILE_);
		foreach ($super_admins as $super_admin)
		{
			$employee = new Employee((int)$super_admin['id_employee']);
			$employee->associateTo((int)$this->id);
		}
	}

	/**
	 * Remove a shop only if it has no dependencies, and remove its associations
	 *
	 * @return bool
	 */
	public function delete()
	{
		if (Shop::hasDependency($this->id) || !$res = parent::delete())
			return false;

		foreach (Shop::getAssoTables() as $table_name => $row)
		{
			$id = 'id_'.$row['type'];
			if ($row['type'] == 'fk_shop')
				$id = 'id_shop';
			else
				$table_name .= '_'.$row['type'];
			$res &= Db::getInstance()->execute('
				DELETE FROM `'.bqSQL(_DB_PREFIX_.$table_name).'`
				WHERE `'.bqSQL($id).'`='.(int)$this->id
			);
		}

		// removes stock available
		$res &= Db::getInstance()->delete('stock_available', 'id_shop = '.(int)$this->id);

		// Remove urls
		$res &= Db::getInstance()->delete('shop_url', 'id_shop = '.(int)$this->id);

		Shop::cacheShops(true);

		return $res;
	}

	/**
	 * Detect dependency with customer or orders
	 *
	 * @param int $id_shop
	 * @return bool
	 */
	public static function hasDependency($id_shop)
	{
		$has_dependency = false;
		$nbr_customer = (int)Db::getInstance()->getValue('
			SELECT count(*)
			FROM `'._DB_PREFIX_.'customer`
			WHERE `id_shop`='.(int)$id_shop
		);
		if ($nbr_customer)
			$has_dependency = true;
		else
		{
			$nbr_order = (int)Db::getInstance()->getValue('
				SELECT count(*)
				FROM `'._DB_PREFIX_.'orders`
				WHERE `id_shop`='.(int)$id_shop
			);
			if ($nbr_order)
				$has_dependency = true;
		}

		return $has_dependency;
	}

	/**
	 * Find the shop from current domain / uri and get an instance of this shop
	 * if INSTALL_VERSION is defined, will return an empty shop object
	 *
	 * @return Shop
	 */
	public static function initialize()
	{
		// Find current shop from URL
		if (!($id_shop = Tools::getValue('id_shop')) || defined('_PS_ADMIN_DIR_'))
		{
			$found_uri = '';
			$is_main_uri = false;
			$host = Tools::getHttpHost();
			$request_uri = rawurldecode($_SERVER['REQUEST_URI']);

			$sql = 'SELECT s.id_shop, CONCAT(su.physical_uri, su.virtual_uri) AS uri, su.domain, su.main
					FROM '._DB_PREFIX_.'shop_url su
					LEFT JOIN '._DB_PREFIX_.'shop s ON (s.id_shop = su.id_shop)
					WHERE (su.domain = \''. pSQL($host).'\' OR su.domain_ssl = \''. pSQL($host).'\')
						AND s.active = 1
						AND s.deleted = 0
					ORDER BY LENGTH(CONCAT(su.physical_uri, su.virtual_uri)) DESC';

			$result = Db::getInstance()->executeS($sql);

			$through = false;
			foreach ($result as $row)
			{
				// An URL matching current shop was found
				if (preg_match('#^'.preg_quote($row['uri'], '#').'#i', $request_uri))
				{
					$through = true;
					$id_shop = $row['id_shop'];
					$found_uri = $row['uri'];
					if ($row['main'])
						$is_main_uri = true;
					break;
				}
			}

			// If an URL was found but is not the main URL, redirect to main URL
			if ($through && $id_shop && !$is_main_uri)
			{

				foreach ($result as $row)
				{
					if ($row['id_shop'] == $id_shop && $row['main'])
					{
						$request_uri = substr($request_uri, strlen($found_uri));
						$url = str_replace('//', '/', $row['domain'].$row['uri'].$request_uri);
						$redirect_type = Configuration::get('PS_CANONICAL_REDIRECT') == 2 ? '301' : '302';
						header('HTTP/1.0 '.$redirect_type.' Moved');
						header('Cache-Control: no-cache');
						header('location: http://'.$url);
						exit;
					}
				}
			}
		}

		if ((!$id_shop && defined('_PS_ADMIN_DIR_')) || Tools::isPHPCLI() || in_array(Tools::getHttpHost(), array(_MEDIA_SERVER_1_, _MEDIA_SERVER_2_, _MEDIA_SERVER_3_)))
		{
			// If in admin, we can access to the shop without right URL
			if ((!$id_shop && Tools::isPHPCLI()) || defined('_PS_ADMIN_DIR_'))
				$id_shop = (int)Configuration::get('PS_SHOP_DEFAULT');

			$shop = new Shop((int)$id_shop);
			if (!Validate::isLoadedObject($shop))
				$shop = new Shop((int)Configuration::get('PS_SHOP_DEFAULT'));

			$shop->physical_uri = preg_replace('#/+#', '/', str_replace('\\', '/', dirname(dirname($_SERVER['SCRIPT_NAME']))).'/');
			$shop->virtual_uri = '';
			
			// Define some $_SERVER variables like HTTP_HOST if PHP is launched with php-cli
			if (Tools::isPHPCLI())
			{
				if (!isset($_SERVER['HTTP_HOST']) || empty($_SERVER['HTTP_HOST']))
					$_SERVER['HTTP_HOST'] = $shop->domain;
				if (!isset($_SERVER['SERVER_NAME']) || empty($_SERVER['SERVER_NAME']))
					$_SERVER['SERVER_NAME'] = $shop->domain;
				if (!isset($_SERVER['REMOTE_ADDR']) || empty($_SERVER['REMOTE_ADDR']))
					$_SERVER['REMOTE_ADDR'] = '127.0.0.1';
			}
		}
		else
		{
			$shop = new Shop($id_shop);
			if (!Validate::isLoadedObject($shop) || !$shop->active)
			{
				// No shop found ... too bad, let's redirect to default shop
				$default_shop = new Shop(Configuration::get('PS_SHOP_DEFAULT'));

				// Hmm there is something really bad in your Prestashop !
				if (!Validate::isLoadedObject($default_shop))
					throw new PrestaShopException('Shop not found');

				$params = $_GET;
				unset($params['id_shop']);
				$url = $default_shop->domain;
				if (!Configuration::get('PS_REWRITING_SETTINGS'))
					$url .= $default_shop->getBaseURI().'index.php?'.http_build_query($params);
				else
				{
					// Catch url with subdomain "www"
					if (strpos($url, 'www.') === 0 && 'www.'.$_SERVER['HTTP_HOST'] === $url || $_SERVER['HTTP_HOST'] === 'www.'.$url)
						$url .= $_SERVER['REQUEST_URI'];
					else
						$url .= $default_shop->getBaseURI();

					if (count($params))
						$url .= '?'.http_build_query($params);
				}
				$redirect_type = Configuration::get('PS_CANONICAL_REDIRECT') == 2 ? '301' : '302';
				header('HTTP/1.0 '.$redirect_type.' Moved');
				header('location: http://'.$url);
				exit;
			}
			elseif (defined('_PS_ADMIN_DIR_') && empty($shop->physical_uri))
			{
				$shop_default = new Shop((int)Configuration::get('PS_SHOP_DEFAULT'));
				$shop->physical_uri = $shop_default->physical_uri;
				$shop->virtual_uri = $shop_default->virtual_uri;
			}
		}

		self::$context_id_shop = $shop->id;
		self::$context_id_shop_group = $shop->id_shop_group;
		self::$context = self::CONTEXT_SHOP;

		return $shop;
	}

	/**
	* @return Address the current shop address
	*/
	public function getAddress()
	{
		if (!isset($this->address))
		{
			$address = new Address();
			$address->company = Configuration::get('PS_SHOP_NAME');
			$address->id_country = Configuration::get('PS_SHOP_COUNTRY_ID') ? Configuration::get('PS_SHOP_COUNTRY_ID') : Configuration::get('PS_COUNTRY_DEFAULT');
			$address->id_state = Configuration::get('PS_SHOP_STATE_ID');
			$address->address1 = Configuration::get('PS_SHOP_ADDR1');
			$address->address2 = Configuration::get('PS_SHOP_ADDR2');
			$address->postcode = Configuration::get('PS_SHOP_CODE');
			$address->city = Configuration::get('PS_SHOP_CITY');

			$this->address = $address;
		}

		return $this->address;
	}

	/**
	 * Get shop theme name
	 *
	 * @return string
	 */
	public function getTheme()
	{
		return $this->theme_directory;
	}

	/**
	 * Get shop URI
	 *
	 * @return string
	 */
	public function getBaseURI()
	{
		return $this->physical_uri.$this->virtual_uri;
	}

	/**
	 * Get shop URL
	 *
	 * @return string
	 */
	public function getBaseURL()
	{
		if (!$this->domain)
			return false;
		return 'http://'.$this->domain.$this->getBaseURI();
	}

	/**
	 * Get group of current shop
	 *
	 * @return ShopGroup
	 */
	public function getGroup()
	{
		if (!$this->group)
			$this->group = new ShopGroup($this->id_shop_group);
		return $this->group;
	}

	/**
	 * Get root category of current shop
	 *
	 * @return int
	 */
	public function getCategory()
	{
		return ($this->id_category) ? $this->id_category : 1;
	}

	/**
	 * Get list of shop's urls
	 *
	 * @return array
	 */
	public function getUrls()
	{
		$sql = 'SELECT *
				FROM '._DB_PREFIX_.'shop_url
				WHERE active = 1
					AND id_shop = '.(int)$this->id;
		return Db::getInstance()->executeS($sql);
	}

	/**
	 * Check if current shop ID is the same as default shop in configuration
	 *
	 * @return bool
	 */
	public function isDefaultShop()
	{
		return $this->id == Configuration::get('PS_SHOP_DEFAULT');
	}

	/**
	 * Get the associated table if available
	 *
	 * @return array
	 */
	public static function getAssoTable($table)
	{
		if (!Shop::$initialized)
			Shop::init();
		return (isset(Shop::$asso_tables[$table]) ? Shop::$asso_tables[$table] : false);
	}
	
	/**
	 * check if the table has an id_shop_default
	 *
	 * @return boolean
	 */
	public static function checkIdShopDefault($table)
	{
		if (!Shop::$initialized)
			Shop::init();
		return in_array($table, self::$id_shop_default_tables);
	}

	/**
	 * Get list of associated tables to shop
	 *
	 * @return array
	 */
	public static function getAssoTables()
	{
		if (!Shop::$initialized)
			Shop::init();
		return Shop::$asso_tables;
	}
	
	/**
	 * Add table associated to shop
	 *
	 * @param string $table_name
	 * @param array $table_details
	 * @return bool
	 */
	public static function addTableAssociation($table_name, $table_details)
	{
		if (!isset(Shop::$asso_tables[$table_name]))
			Shop::$asso_tables[$table_name] = $table_details;
		else
			return false;
		return true;
	}
	
	/**
	 * Check if given table is associated to shop
	 *
	 * @param string $table
	 * @return bool
	 */
	public static function isTableAssociated($table)
	{
		if (!Shop::$initialized)
			Shop::init();
		return isset(Shop::$asso_tables[$table]) && Shop::$asso_tables[$table]['type'] == 'shop';
	}

	/**
	 * Load list of groups and shops, and cache it
	 *
	 * @param bool $refresh
	 */
	public static function cacheShops($refresh = false)
	{
		if (!is_null(self::$shops) && !$refresh)
			return;

		self::$shops = array();

		$from = '';
		$where = '';

		$employee = Context::getContext()->employee;

		// If the profile isn't a superAdmin
		if (Validate::isLoadedObject($employee) && $employee->id_profile != _PS_ADMIN_PROFILE_)
		{
			$from .= 'LEFT JOIN '._DB_PREFIX_.'employee_shop es ON es.id_shop = s.id_shop';
			$where .= 'AND es.id_employee = '.(int)$employee->id;
		}

		$sql = 'SELECT gs.*, s.*, gs.name AS group_name, s.name AS shop_name, s.active, su.domain, su.domain_ssl, su.physical_uri, su.virtual_uri
				FROM '._DB_PREFIX_.'shop_group gs
				LEFT JOIN '._DB_PREFIX_.'shop s
					ON s.id_shop_group = gs.id_shop_group
				LEFT JOIN '._DB_PREFIX_.'shop_url su
					ON s.id_shop = su.id_shop AND su.main = 1
				'.$from.'
				WHERE s.deleted = 0
					AND gs.deleted = 0
					'.$where.'
				ORDER BY gs.name, s.name';

		if ($results = Db::getInstance()->executeS($sql))
		{
			foreach ($results as $row)
			{
				if (!isset(self::$shops[$row['id_shop_group']]))
					self::$shops[$row['id_shop_group']] = array(
						'id' =>				$row['id_shop_group'],
						'name' => 			$row['group_name'],
						'share_customer' =>	$row['share_customer'],
						'share_order' =>	$row['share_order'],
						'share_stock' => $row['share_stock'],
						'shops' => 			array(),
					);

				self::$shops[$row['id_shop_group']]['shops'][$row['id_shop']] = array(
					'id_shop' =>		$row['id_shop'],
					'id_shop_group' =>	$row['id_shop_group'],
					'name' =>			$row['shop_name'],
					'id_theme' =>		$row['id_theme'],
					'id_category' =>	$row['id_category'],
					'domain' =>			$row['domain'],
					'domain_ssl' =>		$row['domain_ssl'],
					'uri' =>			$row['physical_uri'].$row['virtual_uri'],
					'active' =>			$row['active'],
				);
			}
		}
	}

	public static function getCompleteListOfShopsID()
	{
		$list = array();
		$sql = 'SELECT id_shop FROM '._DB_PREFIX_.'shop';
		foreach (Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql) as $row)
			$list[] = $row['id_shop'];
		return $list;
	}

	/**
	 * Get shops list
	 *
	 * @param bool $active
	 * @param int $id_shop_group
	 * @param bool $get_as_list_id
	 * @return array
	 */
	public static function getShops($active = true, $id_shop_group = null, $get_as_list_id = false)
	{
		Shop::cacheShops();

		$results = array();
		foreach (self::$shops as $group_id => $group_data)
			foreach ($group_data['shops'] as $id => $shop_data)
				if ((!$active || $shop_data['active']) && (!$id_shop_group || $id_shop_group == $group_id))
				{
					if ($get_as_list_id)
						$results[$id] = $id;
					else
						$results[$id] = $shop_data;
				}

		return $results;
	}
	
	public function getUrlsSharedCart()
	{
		if (!$this->getGroup()->share_order)
			return false;
		
		$query = new DbQuery();
		$query->select('domain');
		$query->from('shop_url');
		$query->where('main = 1');
		$query->where('active = 1');
		$query .= $this->addSqlRestriction(Shop::SHARE_ORDER);
		$domains = array();
		foreach (Db::getInstance()->executeS($query) as $row)
			$domains[] = $row['domain'];

		return $domains;
	}

	/**
	 * Get a collection of shops
	 *
	 * @param bool $active
	 * @param int $id_shop_group
	 * @return PrestaShopCollection Collection of Shop
	 */
	public static function getShopsCollection($active = true, $id_shop_group = null)
	{
		$shops = new PrestaShopCollection('Shop');
		if ($active)
			$shops->where('active', '=', 1);

		if ($id_shop_group)
			$shops->where('id_shop_group', '=', (int)$id_shop_group);

		return $shops;
	}

	/**
	 * Return some informations cached for one shop
	 *
	 * @param int $shop_id
	 * @return array
	 */
	public static function getShop($shop_id)
	{
		Shop::cacheShops();
		foreach (self::$shops as $group_id => $group_data)
			if (array_key_exists($shop_id, $group_data['shops']))
				return $group_data['shops'][$shop_id];
		return false;
	}

	/**
	 * Return a shop ID from shop name
	 *
	 * @param string $name
	 * @return int
	 */
	public static function getIdByName($name)
	{
		Shop::cacheShops();
		foreach (self::$shops as $group_data)
			foreach ($group_data['shops'] as $shop_id => $shop_data)
				if (Tools::strtolower($shop_data['name']) == Tools::strtolower($name))
					return $shop_id;
		return false;
	}

	/**
	 * @param bool $active
	 * @param int $id_shop_group
	 * @return int Total of shops
	 */
	public static function getTotalShops($active = true, $id_shop_group = null)
	{
		return count(Shop::getShops($active, $id_shop_group));
	}

	/**
	 * Retrieve group ID of a shop
	 *
	 * @param int $shop_id Shop ID
	 * @return int Group ID
	 */
	public static function getGroupFromShop($shop_id, $as_id = true)
	{
		Shop::cacheShops();
		foreach (self::$shops as $group_id => $group_data)
			if (array_key_exists($shop_id, $group_data['shops']))
				return ($as_id) ? $group_id : $group_data;
		return false;
	}

	/**
	 * If the shop group has the option $type activated, get all shops ID of this group, else get current shop ID
	 *
	 * @param int $shop_id
	 * @param int $type Shop::SHARE_CUSTOMER | Shop::SHARE_ORDER
	 * @return array
	 */
	public static function getSharedShops($shop_id, $type)
	{
		if (!in_array($type, array(Shop::SHARE_CUSTOMER, Shop::SHARE_ORDER, SHOP::SHARE_STOCK)))
			die('Wrong argument ($type) in Shop::getSharedShops() method');

		Shop::cacheShops();
		foreach (self::$shops as $group_data)
			if (array_key_exists($shop_id, $group_data['shops']) && $group_data[$type])
				return array_keys($group_data['shops']);
		return array($shop_id);
	}

	/**
	 * Get a list of ID concerned by the shop context (E.g. if context is shop group, get list of children shop ID)
	 *
	 * @param string $share If false, dont check share datas from group. Else can take a Shop::SHARE_* constant value
	 * @return array
	 */
	public static function getContextListShopID($share = false)
	{
		if (Shop::getContext() == Shop::CONTEXT_SHOP)
			$list = ($share) ? Shop::getSharedShops(Shop::getContextShopID(), $share) : array(Shop::getContextShopID());
		elseif (Shop::getContext() == Shop::CONTEXT_GROUP)
			$list = Shop::getShops(true, Shop::getContextShopGroupID(), true);
		else
			$list = Shop::getShops(true, null, true);

		return $list;
	}

	/**
	 * Return the list of shop by id
	 *
	 * @param int $id
	 * @param string $identifier
	 * @param string $table
	 * @return array
	 */
	public static function getShopById($id, $identifier, $table)
	{
		return Db::getInstance()->executeS('
			SELECT `id_shop`, `'.bqSQL($identifier).'`
			FROM `'._DB_PREFIX_.bqSQL($table).'_shop`
			WHERE `'.bqSQL($identifier).'` = '.(int)$id
		);
	}

	/**
	 * Change the current shop context
	 *
	 * @param int $type Shop::CONTEXT_ALL | Shop::CONTEXT_GROUP | Shop::CONTEXT_SHOP
	 * @param int $id ID shop if CONTEXT_SHOP or id shop group if CONTEXT_GROUP
	 */
	public static function setContext($type, $id = null)
	{
		switch ($type)
		{
			case self::CONTEXT_ALL :
				self::$context_id_shop = null;
				self::$context_id_shop_group = null;
			break;

			case self::CONTEXT_GROUP :
				self::$context_id_shop = null;
				self::$context_id_shop_group = (int)$id;
			break;

			case self::CONTEXT_SHOP :
				self::$context_id_shop = (int)$id;
				self::$context_id_shop_group = Shop::getGroupFromShop($id);
			break;

			default :
				throw new PrestaShopException('Unknown context for shop');
		}

		self::$context = $type;
	}

	/**
	 * Get current context of shop
	 *
	 * @return int
	 */
	public static function getContext()
	{
		return self::$context;
	}

	/**
	 * Get current ID of shop if context is CONTEXT_SHOP
	 *
	 * @return int
	 */
	public static function getContextShopID($null_value_without_multishop = false)
	{
		if ($null_value_without_multishop && !Shop::isFeatureActive())
			return null;
		return self::$context_id_shop;
	}

	/**
	 * Get current ID of shop group if context is CONTEXT_SHOP or CONTEXT_GROUP
	 *
	 * @return int
	 */
	public static function getContextShopGroupID($null_value_without_multishop = false)
	{
		if ($null_value_without_multishop && !Shop::isFeatureActive())
			return null;

		return self::$context_id_shop_group;
	}
	
	public static function getContextShopGroup()
	{
		static $context_shop_group = null;
		if ($context_shop_group === null)
			$context_shop_group = new ShopGroup((int)self::$context_id_shop_group);
		return $context_shop_group;
	}

	/**
	 * Add an sql restriction for shops fields
	 *
	 * @param int $share If false, dont check share datas from group. Else can take a Shop::SHARE_* constant value
	 * @param string $alias
	 */
	public static function addSqlRestriction($share = false, $alias = null)
	{
		if ($alias)
			$alias .= '.';

		$group = Shop::getGroupFromShop(Shop::getContextShopID(), false);
		if ($share == Shop::SHARE_CUSTOMER && Shop::getContext() == Shop::CONTEXT_SHOP && $group['share_customer'])
			$restriction = ' AND '.$alias.'id_shop_group = '.(int)Shop::getContextShopGroupID();
		else
			$restriction = ' AND '.$alias.'id_shop IN ('.implode(', ', Shop::getContextListShopID($share)).') ';

		return $restriction;
	}

	/**
	 * Add an SQL JOIN in query between a table and its associated table in multishop
	 *
	 * @param string $table Table name (E.g. product, module, etc.)
	 * @param string $alias Alias of table
	 * @param bool $inner_join Use or not INNER JOIN
	 * @param string $on
	 * @return string
	 */
	public static function addSqlAssociation($table, $alias, $inner_join = true, $on = null, $force_not_default = false)
	{
		$table_alias = $table.'_shop';
		if (strpos($table, '.') !== false)
			list($table_alias, $table) = explode('.', $table);

		$asso_table = Shop::getAssoTable($table);
		if ($asso_table === false || $asso_table['type'] != 'shop')
			return;
		$sql = (($inner_join) ? ' INNER' : ' LEFT').' JOIN '._DB_PREFIX_.$table.'_shop '.$table_alias.'
		ON ('.$table_alias.'.id_'.$table.' = '.$alias.'.id_'.$table;
		if ((int)self::$context_id_shop)
			$sql .= ' AND '.$table_alias.'.id_shop = '.(int)self::$context_id_shop;
		elseif (Shop::checkIdShopDefault($table) && !$force_not_default)
			$sql .= ' AND '.$table_alias.'.id_shop = '.$alias.'.id_shop_default';
		else
			$sql .= ' AND '.$table_alias.'.id_shop IN ('.implode(', ', Shop::getContextListShopID()).')';
		$sql .= (($on) ? ' AND '.$on : '').')';
		return $sql;
	}

	/**
	 * Add a restriction on id_shop for multishop lang table
	 *
	 * @param string $alias
	 * @param Context $context
	 * @return string
	 */
	public static function addSqlRestrictionOnLang($alias = null, $id_shop = null)
	{
		if (isset(Context::getContext()->shop) && is_null($id_shop))
			$id_shop = (int)Context::getContext()->shop->id;
		if (!$id_shop)
			$id_shop = (int)Configuration::get('PS_SHOP_DEFAULT');

		return ' AND '.(($alias) ? $alias.'.' : '').'id_shop = '.$id_shop.' ';
	}

	/**
	 * Get all groups and associated shops as subarrays
	 *
	 * @return array
	 */
	public static function getTree()
	{
		Shop::cacheShops();
		return self::$shops;
	}

	/**
	 * @return bool Return true if multishop feature is active and at last 2 shops have been created
	 */
	public static function isFeatureActive()
	{
		static $feature_active = null;

		if ($feature_active === null)
			$feature_active = Configuration::getGlobalValue('PS_MULTISHOP_FEATURE_ACTIVE') && (Db::getInstance()->getValue('SELECT COUNT(*) FROM '._DB_PREFIX_.'shop') > 1);

		return $feature_active;
	}

	public function copyShopData($old_id, $tables_import = false, $deleted = false)
	{
		// If we duplicate some specific data, automatically duplicate other data linked to the first
		// E.g. if carriers are duplicated for the shop, duplicate carriers langs too

		if (!$old_id)
			$old_id = Configuration::get('PS_SHOP_DEFAULT');

		if (isset($tables_import['carrier']))
		{
			$tables_import['carrier_tax_rules_group_shop'] = true;
			$tables_import['carrier_lang'] = true;
		}

		$tables_import['category_lang'] = true;
		if (isset($tables_import['product']))
			$tables_import['product_lang'] = true;

		if (isset($tables_import['module']))
		{
			$tables_import['module_currency'] = true;
			$tables_import['module_country'] = true;
			$tables_import['module_group'] = true;
		}

		if (isset($tables_import['hook_module']))
			$tables_import['hook_module_exceptions'] = true;

		if (isset($tables_import['attribute_group']))
			$tables_import['attribute'] = true;

		// Browse and duplicate data
		foreach (Shop::getAssoTables() as $table_name => $row)
		{
			if ($tables_import && !isset($tables_import[$table_name]))
				continue;

			// Special case for stock_available if current shop is in a share stock group
			if ($table_name == 'stock_available')
			{
				$group = new ShopGroup($this->id_shop_group);
				if ($group->share_stock && $group->haveShops())
					continue;
			}

			$id = 'id_'.$row['type'];
			if ($row['type'] == 'fk_shop')
				$id = 'id_shop';
			else
				$table_name .= '_'.$row['type'];

			if (!$deleted)
			{
				$res = Db::getInstance()->getRow('SELECT * FROM `'._DB_PREFIX_.$table_name.'` WHERE `'.$id.'` = '.(int)$old_id);
				if ($res)
				{
					unset($res[$id]);
					if (isset($row['primary']))
						unset($res[$row['primary']]);

					$categories = Tools::getValue('categoryBox');
					if ($table_name == 'product_shop' && count($categories) == 1)
					{
						unset($res['id_category_default']);
						$keys = implode('`, `', array_keys($res));
						$sql = 'INSERT IGNORE INTO `'._DB_PREFIX_.$table_name.'` (`'.$keys.'`, `id_category_default`, '.$id.')
								(SELECT `'.$keys.'`, '.(int)$categories[0].', '.(int)$this->id.' FROM '._DB_PREFIX_.$table_name.'
								WHERE `'.$id.'` = '.(int)$old_id.')';
					}
					else
					{
						$keys = implode('`, `', array_keys($res));
						$sql = 'INSERT IGNORE INTO `'._DB_PREFIX_.$table_name.'` (`'.$keys.'`, '.$id.')
								(SELECT `'.$keys.'`, '.(int)$this->id.' FROM '._DB_PREFIX_.$table_name.'
								WHERE `'.$id.'` = '.(int)$old_id.')';
					}
					Db::getInstance()->execute($sql);
				}
			}
		}

		// Hook for duplication of shop data
		$modules_list = Hook::getHookModuleExecList('actionShopDataDuplication');
		if (is_array($modules_list) && count($modules_list) > 0)
			foreach ($modules_list as $m)
				if (!$tables_import || isset($tables_import['Module'.ucfirst($m['module'])]))
					Hook::exec('actionShopDataDuplication', array(
						'old_id_shop' => (int)$old_id,
						'new_id_shop' => (int)$this->id,
					), $m['id_module']);
	}

	/**
	 * @static
	 * @param int $id
	 * @return array
	 */
	public static function getCategories($id = 0, $only_id = true)
	{
		// build query
		$query = new DbQuery();
		if ($only_id)
			$query->select('cs.`id_category`');
		else
			$query->select('DISTINCT cs.`id_category`, cl.`name`, cl.`link_rewrite`');
		$query->from('category_shop', 'cs');
		$query->leftJoin('category_lang', 'cl', 'cl.`id_category` = cs.`id_category` AND cl.`id_lang` = '.(int)Context::getContext()->language->id);
		$query->where('cs.`id_shop` = '.(int)$id);
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($query);

		if ($only_id)
		{
			$array = array();
			foreach ($result as $row)
				$array[] = $row['id_category'];
			$array = array_unique($array);
		}
		else
			return $result;

		return $array;
	}

	/**
	 * @deprecated 1.5.0 Use shop->id
	 */
	public static function getCurrentShop()
	{
		Tools::displayAsDeprecated();
		return Context::getContext()->shop->id;
	}

	/**
	 * @param string $entity
	 * @param int $id_shop
	 * @return array|bool
	 */
	public static function getEntityIds($entity, $id_shop, $active = false, $delete = false)
	{
		if (!Shop::isTableAssociated($entity))
			return false;

		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT entity.`id_'.pSQL($entity).'`
			FROM `'._DB_PREFIX_.pSQL($entity).'_shop`es
			LEFT JOIN '._DB_PREFIX_.pSQL($entity).' entity
				ON (entity.`id_'.pSQL($entity).'` = es.`id_'.pSQL($entity).'`)
			WHERE es.`id_shop` = '.(int)$id_shop.
			($active ? ' AND entity.`active` = 1' : '').
			($delete ? ' AND entity.deleted = 0' : '')
		);
	}
}

File Manager Version 1.0, Coded By Lucas
Email: hehe@yahoo.com