/classes/Link.php

<?php
/*
* 2007-2012 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  2007-2012 PrestaShop SA
*  @version  Release: $Revision: 7465 $
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class LinkCore
{
	/** @var boolean Rewriting activation */
	protected $allow;
	protected $url;
	public static $cache = array('page' => array());

	public $protocol_link;
	public $protocol_content;

	protected $ssl_enable;

	/**
	  * Constructor (initialization only)
	  */
	public function __construct($protocol_link = null, $protocol_content = null)
	{
		$this->allow = (int)Configuration::get('PS_REWRITING_SETTINGS');
		$this->url = $_SERVER['SCRIPT_NAME'];
		$this->protocol_link = $protocol_link;
		$this->protocol_content = $protocol_content;

		if (!defined('_PS_BASE_URL_'))
			define('_PS_BASE_URL_', Tools::getShopDomain(true));
		if (!defined('_PS_BASE_URL_SSL_'))
			define('_PS_BASE_URL_SSL_', Tools::getShopDomainSsl(true));

		$this->ssl_enable = Configuration::get('PS_SSL_ENABLED');
	}

	/**
	 * Create a link to delete a product
	 *
	 * @param mixed $product ID of the product OR a Product object
	 * @param int $id_picture ID of the picture to delete
	 * @return string
	 */
	public function getProductDeletePictureLink($product, $id_picture)
	{
		$url = $this->getProductLink($product);
		return $url.((strpos($url, '?')) ? '&' : '?').'&deletePicture='.$id_picture;
	}

	/**
	 * Create a link to a product
	 *
	 * @param mixed $product Product object (can be an ID product, but deprecated)
	 * @param string $alias
	 * @param string $category
	 * @param string $ean13
	 * @param int $id_lang
	 * @param int $id_shop (since 1.5.0) ID shop need to be used when we generate a product link for a product in a cart
	 * @param int $ipa ID product attribute
	 * @return string
	 */
	public function getProductLink($product, $alias = null, $category = null, $ean13 = null, $id_lang = null, $id_shop = null, $ipa = 0, $force_routes = false)
	{
		$dispatcher = Dispatcher::getInstance();

		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;

		if (!$id_shop)
			$shop = Context::getContext()->shop;
		else
			$shop = new Shop($id_shop);
		
		$url = 'http://'.$shop->domain.$shop->getBaseURI().$this->getLangLink($id_lang);

		if (!is_object($product))
		{
			if (is_array($product) && isset($product['id_product']))
					$product = new Product($product['id_product'], false, $id_lang);
			else if (is_numeric($product) || !$product)
				$product = new Product($product, false, $id_lang);
			else
				throw new PrestaShopException('Invalid product vars');
		}

		// Set available keywords
		$params = array();
		$params['id'] = $product->id;
		$params['rewrite'] = (!$alias) ? $product->getFieldByLang('link_rewrite') : $alias;
		$params['ean13'] = (!$ean13) ? $product->ean13 : $ean13;
		$params['meta_keywords'] =	Tools::str2url($product->getFieldByLang('meta_keywords'));
		$params['meta_title'] = Tools::str2url($product->getFieldByLang('meta_title'));

		if ($dispatcher->hasKeyword('product_rule', $id_lang, 'manufacturer'))
			$params['manufacturer'] = Tools::str2url($product->isFullyLoaded ? $product->manufacturer_name : Manufacturer::getNameById($product->id_manufacturer));

		if ($dispatcher->hasKeyword('product_rule', $id_lang, 'supplier'))
			$params['supplier'] = Tools::str2url($product->isFullyLoaded ? $product->supplier_name : Supplier::getNameById($product->id_supplier));

		if ($dispatcher->hasKeyword('product_rule', $id_lang, 'price'))
			$params['price'] = $product->isFullyLoaded ? $product->price : Product::getPriceStatic($product->id, false, null, 6, null, false, true, 1, false, null, null, null, $product->specificPrice);

		if ($dispatcher->hasKeyword('product_rule', $id_lang, 'tags'))
			$params['tags'] = Tools::str2url($product->getTags($id_lang));
		
		if ($dispatcher->hasKeyword('product_rule', $id_lang, 'reference'))
			$params['reference'] = Tools::str2url($product->reference);

		if ($dispatcher->hasKeyword('product_rule', $id_lang, 'categories'))
		{
			$params['category'] = (!$category) ? $product->category : $category;
			$cats = array();
			foreach ($product->getParentCategories() as $cat)
				if (!in_array($cat['id_category'], array(1, 2)))//remove root and home category from the URL
					$cats[] = $cat['link_rewrite'];
			$params['categories'] = implode('/', $cats);
		}
		$anchor = $ipa ? $product->getAnchor($ipa) : '';

		return $url.$dispatcher->createUrl('product_rule', $id_lang, $params, $force_routes, $anchor);
	}

	/**
	 * Create a link to a category
	 *
	 * @param mixed $category Category object (can be an ID category, but deprecated)
	 * @param string $alias
	 * @param int $id_lang
	 * @param string $selected_filters Url parameter to autocheck filters of the module blocklayered
	 * @return string
	 */
	public function getCategoryLink($category, $alias = null, $id_lang = null, $selected_filters = null)
	{
		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		$url = _PS_BASE_URL_.__PS_BASE_URI__.$this->getLangLink($id_lang);

		if (!is_object($category))
			$category = new Category($category, $id_lang);

		// Set available keywords
		$params = array();
		$params['id'] = $category->id;
		$params['rewrite'] = (!$alias) ? $category->link_rewrite : $alias;
		$params['meta_keywords'] =	Tools::str2url($category->meta_keywords);
		$params['meta_title'] = Tools::str2url($category->meta_title);

		// Selected filters is used by the module blocklayered
		$selected_filters = is_null($selected_filters) ? Tools::getValue('selected_filters') : $selected_filters;

		if (empty($selected_filters))
			$rule = 'category_rule';
		else
		{
			$rule = 'layered_rule';
			$params['selected_filters'] = $selected_filters;
		}

		return $url.Dispatcher::getInstance()->createUrl($rule, $id_lang, $params, $this->allow);
	}

	/**
	 * Create a link to a CMS category
	 *
	 * @param mixed $category CMSCategory object (can be an ID category, but deprecated)
	 * @param string $alias
	 * @param int $id_lang
	 * @return string
	 */
	public function getCMSCategoryLink($category, $alias = null, $id_lang = null)
	{
		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		$url = _PS_BASE_URL_.__PS_BASE_URI__.$this->getLangLink($id_lang);

		if (!is_object($category))
			$category = new CMSCategory($category, $id_lang);

		// Set available keywords
		$params = array();
		$params['id'] = $category->id;
		$params['rewrite'] = (!$alias) ? $category->link_rewrite : $alias;
		$params['meta_keywords'] =	Tools::str2url($category->meta_keywords);
		$params['meta_title'] = Tools::str2url($category->meta_title);

		return $url.Dispatcher::getInstance()->createUrl('cms_category_rule', $id_lang, $params, $this->allow);
	}

	/**
	 * Create a link to a CMS page
	 *
	 * @param mixed $cms CMS object (can be an ID CMS, but deprecated)
	 * @param string $alias
	 * @param bool $ssl
	 * @param int $id_lang
	 * @return string
	 */
	public function getCMSLink($cms, $alias = null, $ssl = false, $id_lang = null)
	{
		$base = (($ssl && $this->ssl_enable) ? _PS_BASE_URL_SSL_ : _PS_BASE_URL_);

		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		$url = $base.__PS_BASE_URI__.$this->getLangLink($id_lang);

		if (!is_object($cms))
			$cms = new CMS($cms, $id_lang);

		// Set available keywords
		$params = array();
		$params['id'] = $cms->id;
		$params['rewrite'] = (!$alias) ? (is_array($cms->link_rewrite) ? $cms->link_rewrite[(int)$id_lang] : $cms->link_rewrite) : $alias;

		if (isset($cms->meta_keywords) && !empty($cms->meta_keywords))
			$params['meta_keywords'] = is_array($cms->meta_keywords) ?  Tools::str2url($cms->meta_keywords[(int)$id_lang]) :  Tools::str2url($cms->meta_keywords);
		else
			$params['meta_keywords'] = '';

		if (isset($cms->meta_title) && !empty($cms->meta_title))
			$params['meta_title'] = is_array($cms->meta_title) ? Tools::str2url($cms->meta_title[(int)$id_lang]) : Tools::str2url($cms->meta_title);
		else
			$params['meta_title'] = '';

		return $url.Dispatcher::getInstance()->createUrl('cms_rule', $id_lang, $params, $this->allow);
	}

	/**
	 * Create a link to a supplier
	 *
	 * @param mixed $supplier Supplier object (can be an ID supplier, but deprecated)
	 * @param string $alias
	 * @param int $id_lang
	 * @return string
	 */
	public function getSupplierLink($supplier, $alias = null, $id_lang = null)
	{
		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		$url = _PS_BASE_URL_.__PS_BASE_URI__.$this->getLangLink($id_lang);

		if (!is_object($supplier))
			$supplier = new Supplier($supplier, $id_lang);

		// Set available keywords
		$params = array();
		$params['id'] = $supplier->id;
		$params['rewrite'] = (!$alias) ? $supplier->link_rewrite : $alias;
		$params['meta_keywords'] =	Tools::str2url($supplier->meta_keywords);
		$params['meta_title'] = Tools::str2url($supplier->meta_title);

		return $url.Dispatcher::getInstance()->createUrl('supplier_rule', $id_lang, $params, $this->allow);
	}

	/**
	 * Create a link to a manufacturer
	 *
	 * @param mixed $manufacturer Manufacturer object (can be an ID supplier, but deprecated)
	 * @param string $alias
	 * @param int $id_lang
	 * @return string
	 */
	public function getManufacturerLink($manufacturer, $alias = null, $id_lang = null)
	{
		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		$url = _PS_BASE_URL_.__PS_BASE_URI__.$this->getLangLink($id_lang);

		if (!is_object($manufacturer))
			$manufacturer = new Manufacturer($manufacturer, $id_lang);

		// Set available keywords
		$params = array();
		$params['id'] = $manufacturer->id;
		$params['rewrite'] = (!$alias) ? $manufacturer->link_rewrite : $alias;
		$params['meta_keywords'] =	Tools::str2url($manufacturer->meta_keywords);
		$params['meta_title'] = Tools::str2url($manufacturer->meta_title);

		return $url.Dispatcher::getInstance()->createUrl('manufacturer_rule', $id_lang, $params, $this->allow);
	}

	/**
	 * Create a link to a module
	 *
	 * @since 1.5.0
	 * @param string $module Module name
	 * @param string $process Action name
	 * @param int $id_lang
	 * @return string
	 */
	public function getModuleLink($module, $controller = 'default', array $params = array(), $ssl = false, $id_lang = null)
	{
		$base = (($ssl && $this->ssl_enable) ? _PS_BASE_URL_SSL_ : _PS_BASE_URL_);

		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		$url = $base.__PS_BASE_URI__.$this->getLangLink($id_lang);

		// Set available keywords
		$params['module'] = $module;
		$params['controller'] = $controller ? $controller : 'default';

		// If the module has its own route ... just use it !
		if (Dispatcher::getInstance()->hasRoute('module-'.$module.'-'.$controller, $id_lang))
		{
			unset($params['module']);
			return $this->getPageLink('module-'.$module.'-'.$controller, $ssl, $id_lang, $params);
		}
		else
			return $url.Dispatcher::getInstance()->createUrl('module', $id_lang, $params, $this->allow);
	}

	/**
	 * Use controller name to create a link
	 *
	 * @param string $controller
	 * @param boolean $with_token include or not the token in the url
	 * @return controller url
	 */
	public function getAdminLink($controller, $with_token = true)
	{
		$id_lang = Context::getContext()->language->id;
		
		$params = $with_token ? array('token' => Tools::getAdminTokenLite($controller)) : array();
		return Dispatcher::getInstance()->createUrl($controller, $id_lang, $params, false);
	}

	/**
	 * Returns a link to a product image for display
	 * Note: the new image filesystem stores product images in subdirectories of img/p/
	 *
	 * @param string $name rewrite link of the image
	 * @param string $ids id part of the image filename - can be "id_product-id_image" (legacy support, recommended) or "id_image" (new)
	 * @param string $type
	 */
	public function getImageLink($name, $ids, $type = null)
	{
		$not_default = false;
		// legacy mode or default image
		$theme = ((Shop::isFeatureActive() && file_exists(_PS_PROD_IMG_DIR_.$ids.($type ? '-'.$type : '').'-'.(int)Context::getContext()->shop->id_theme.'.jpg')) ? '-'.Context::getContext()->shop->id_theme : '');
		if ((Configuration::get('PS_LEGACY_IMAGES')
			&& (file_exists(_PS_PROD_IMG_DIR_.$ids.($type ? '-'.$type : '').$theme.'.jpg')))
			|| ($not_default = strpos($ids, 'default') !== false))
		{
			if ($this->allow == 1 && !$not_default)
				$uri_path = __PS_BASE_URI__.$ids.($type ? '-'.$type : '').$theme.'/'.$name.'.jpg';
			else
				$uri_path = _THEME_PROD_DIR_.$ids.($type ? '-'.$type : '').$theme.'.jpg';
		}
		else
		{
			// if ids if of the form id_product-id_image, we want to extract the id_image part
			$split_ids = explode('-', $ids);
			$id_image = (isset($split_ids[1]) ? $split_ids[1] : $split_ids[0]);
			$theme = ((Shop::isFeatureActive() && file_exists(_PS_PROD_IMG_DIR_.Image::getImgFolderStatic($id_image).$id_image.($type ? '-'.$type : '').'-'.(int)Context::getContext()->shop->id_theme.'.jpg')) ? '-'.Context::getContext()->shop->id_theme : '');
			if ($this->allow == 1)
				$uri_path = __PS_BASE_URI__.$id_image.($type ? '-'.$type : '').$theme.'/'.$name.'.jpg';
			else
				$uri_path = _THEME_PROD_DIR_.Image::getImgFolderStatic($id_image).$id_image.($type ? '-'.$type : '').$theme.'.jpg';
		}

		return $this->protocol_content.Tools::getMediaServer($uri_path).$uri_path;
	}

	public function getMediaLink($filepath)
	{
		return Tools::getProtocol().Tools::getMediaServer($filepath).$filepath;
	}

	/**
	 * Create a simple link
	 *
	 * @param string $controller
	 * @param bool $ssl
	 * @param int $id_lang
	 * @param string|array $request
	 * @param bool $request_url_encode Use URL encode
	 *
	 * @return string Page link
	 */
	public function getPageLink($controller, $ssl = false, $id_lang = null, $request = null, $request_url_encode = false)
	{
		$controller = Tools::strReplaceFirst('.php', '', $controller);

		if (!$id_lang)
			$id_lang = (int)Context::getContext()->language->id;

		if (!is_array($request))
		{
			// @FIXME html_entity_decode has been added due to '&amp;' => '%3B' ...
			$request = html_entity_decode($request);
			if ($request_url_encode)
				$request = urlencode($request);
			parse_str($request, $request);
		}
		unset($request['controller']);

		$uri_path = Dispatcher::getInstance()->createUrl($controller, $id_lang, $request);
		$url = ($ssl && $this->ssl_enable) ? Tools::getShopDomainSsl(true) : Tools::getShopDomain(true);
		$url .= __PS_BASE_URI__.$this->getLangLink($id_lang).ltrim($uri_path, '/');

		return $url;
	}

	public function getCatImageLink($name, $id_category, $type = null)
	{
		$uri_path = ($this->allow == 1) ? (__PS_BASE_URI__.'c/'.$id_category.($type ? '-'.$type : '').'/'.$name.'.jpg') : (_THEME_CAT_DIR_.$id_category.($type ? '-'.$type : '').'.jpg');
		return $this->protocol_content.Tools::getMediaServer($uri_path).$uri_path;
	}

	/**
	 * Create link after language change, for the change language block
	 *
	 * @param integer $id_lang Language ID
	 * @return string link
	 */
	public function getLanguageLink($id_lang, Context $context = null)
	{
		if (!$context)
			$context = Context::getContext();

		$params = $_GET;
		unset($params['isolang'], $params['controller']);

		if (!$this->allow)
			$params['id_lang'] = $id_lang;
		else
			unset($params['id_lang']);

		$controller = Dispatcher::getInstance()->getController();
		if (!empty(Context::getContext()->controller->php_self))
			$controller = Context::getContext()->controller->php_self;

		if ($controller == 'product' && isset($params['id_product']))
			return $this->getProductLink((int)$params['id_product'], null, null, null, (int)$id_lang);
		elseif ($controller == 'category' && isset($params['id_category']))
			return $this->getCategoryLink((int)$params['id_category'], null, (int)$id_lang);
		elseif ($controller == 'supplier' && isset($params['id_supplier']))
			return $this->getSupplierLink((int)$params['id_supplier'], null, (int)$id_lang);
		elseif ($controller == 'manufacturer' && isset($params['id_manufacturer']))
			return $this->getManufacturerLink((int)$params['id_manufacturer'], null, (int)$id_lang);
		elseif ($controller == 'cms' && isset($params['id_cms']))
			return $this->getCMSLink((int)$params['id_cms'], null, false, (int)$id_lang);
		elseif ($controller == 'cms' && isset($params['id_cms_category']))
			return $this->getCMSCategoryLink((int)$params['id_cms_category'], null, (int)$id_lang);

		return $this->getPageLink($controller, false, $id_lang, $params);
	}

	public function goPage($url, $p)
	{
		return $url.($p == 1 ? '' : (!strstr($url, '?') ? '?' : '&amp;').'p='.(int)$p);
	}

	/**
	 * Get pagination link
	 *
	 * @param string $type Controller name
	 * @param int $id_object
	 * @param boolean $nb Show nb element per page attribute
	 * @param boolean $sort Show sort attribute
	 * @param boolean $pagination Show page number attribute
	 * @param boolean $array If false return an url, if true return an array
	 */
	public function getPaginationLink($type, $id_object, $nb = false, $sort = false, $pagination = false, $array = false)
	{
		// If no parameter $type, try to get it by using the controller name
		if (!$type && !$id_object)
		{
			$method_name = 'get'.Dispatcher::getInstance()->getController().'Link';
			if (method_exists($this, $method_name) && isset($_GET['id_'.Dispatcher::getInstance()->getController()]))
			{
				$type = Dispatcher::getInstance()->getController();
				$id_object = $_GET['id_'.$type];
			}
		}

		if ($type && $id_object)
			$url = $this->{'get'.$type.'Link'}($id_object, null);
		else
		{
			if (isset(Context::getContext()->controller->php_self))
				$name = Context::getContext()->controller->php_self;
			else
				$name = Dispatcher::getInstance()->getController();
			$url = $this->getPageLink($name);
		}

		$vars = array();
		$vars_nb = array('n', 'search_query');
		$vars_sort = array('orderby', 'orderway');
		$vars_pagination = array('p');

		foreach ($_GET as $k => $value)
		{
			if ($k != 'id_'.$type && $k != 'controller')
			{
				if (Configuration::get('PS_REWRITING_SETTINGS') && ($k == 'isolang' || $k == 'id_lang'))
					continue;
				$if_nb = (!$nb || ($nb && !in_array($k, $vars_nb)));
				$if_sort = (!$sort || ($sort && !in_array($k, $vars_sort)));
				$if_pagination = (!$pagination || ($pagination && !in_array($k, $vars_pagination)));
				if ($if_nb && $if_sort && $if_pagination)
				{
					if (!is_array($value))
						$vars[urlencode($k)] = $value;
					else
					{
						foreach (explode('&', http_build_query(array($k => $value), '', '&')) as $key => $val)
						{
							$data = explode('=', $val);
							$vars[urldecode($data[0])] = $data[1];
						}
					}
				}
			}
		}

		if (!$array)
			return $url.(($this->allow == 1 || $url == $this->url) ? '?' : '&').http_build_query($vars, '', '&');
		$vars['requestUrl'] = $url;

		if ($type && $id_object)
			$vars['id_'.$type] = (is_object($id_object) ? (int)$id_object->id : (int)$id_object);
			
		if (!$this->allow == 1)
			$vars['controller'] = Dispatcher::getInstance()->getController();
		return $vars;
	}

	public function addSortDetails($url, $orderby, $orderway)
	{
		return $url.(!strstr($url, '?') ? '?' : '&').'orderby='.urlencode($orderby).'&orderway='.urlencode($orderway);
	}

	protected function getLangLink($id_lang = null, Context $context = null)
	{
		if (!$context)
			$context = Context::getContext();

		if (!$this->allow || !Language::isMultiLanguageActivated())
			return '';

		if (!$id_lang)
			$id_lang = $context->language->id;

		return Language::getIsoById($id_lang).'/';
	}
}