Prestashop Nejprodávanější zboží - zobrazení počtu skladem

<?php
/*
* 2007-2013 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 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/afl-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  2007-2013 PrestaShop SA
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

if (!defined('_PS_VERSION_'))
    exit;
    
class BlockBestSellers extends Module
{
    private $_html = '';
    private $_postErrors = array();

    public function __construct()
    {
        $this->name = 'blockbestsellers';
        $this->tab = 'front_office_features';
        $this->version = '1.1';
        $this->author = 'PrestaShop';
        $this->need_instance = 1;

        parent::__construct();

        $this->displayName = $this->l('Top-seller block');
        $this->description = $this->l('Add a block displaying your store\'s top-selling products.');
    }

    /**
     * @see ModuleCore::install()
     */
    public function install()
    {
        if (!parent::install() ||
                !$this->registerHook('rightColumn') ||
                !$this->registerHook('header') ||
                !$this->registerHook('updateOrderStatus') ||
                !ProductSale::fillProductSales())
            return false;
        return true;
    }

    /**
     * Called in administration -> module -> configure
     */
    public function getContent()
    {
        $output = '<h2>'.$this->displayName.'</h2>';
        if (Tools::isSubmit('submitBestSellers'))
        {
            Configuration::updateValue('PS_BLOCK_BESTSELLERS_DISPLAY', (int)Tools::getValue('always_display'));
            $output .= '<div class="conf confirm">'.$this->l('Settings updated').'</div>';
        }
        return $output.$this->displayForm();
    }

    public function displayForm()
    {
        return '
        <form action="'.Tools::safeOutput($_SERVER['REQUEST_URI']).'" method="post">
            <fieldset>
                <legend><img src="'.$this->_path.'logo.gif" alt="" title="" />'.$this->l('Settings').'</legend>
                <label>'.$this->l('Always display this block.').'</label>
                <div class="margin-form">
                    <input type="radio" name="always_display" id="display_on" value="1" '.(Tools::getValue('always_display', Configuration::get('PS_BLOCK_BESTSELLERS_DISPLAY')) ? 'checked="checked" ' : '').'/>
                    <label class="t" for="display_on"> <img src="../img/admin/enabled.gif" alt="'.$this->l('Enabled').'" title="'.$this->l('Enabled').'" /></label>
                    <input type="radio" name="always_display" id="display_off" value="0" '.(!Tools::getValue('always_display', Configuration::get('PS_BLOCK_BESTSELLERS_DISPLAY')) ? 'checked="checked" ' : '').'/>
                    <label class="t" for="display_off"> <img src="../img/admin/disabled.gif" alt="'.$this->l('Disabled').'" title="'.$this->l('Disabled').'" /></label>
                    <p class="clear">'.$this->l('Show the block even if no products are available.').'</p>
                </div>
                <center><input type="submit" name="submitBestSellers" value="'.$this->l('Save').'" class="button" /></center>
            </fieldset>
        </form>';
    }

    public function hookHeader($params)
    {
        if (Configuration::get('PS_CATALOG_MODE'))
            return;
        $this->context->controller->addCSS($this->_path.'blockbestsellers.css', 'all');
    }

    public function hookHome($params)
    {
        $best_sellers = $this->getBestSellers($params);
        if ($best_sellers === false)
            return;

        $this->smarty->assign(array(   
            'best_sellers' => $best_sellers,
            'homeSize' => Image::getSize(ImageType::getFormatedName('home'))));
        return $this->display(__FILE__, 'blockbestsellers-home.tpl');
    }

    public function hookRightColumn($params)
    {
        $best_sellers = $this->getBestSellers($params);
        if ($best_sellers === false)
            return;

        $this->smarty->assign(array(
            'best_sellers' => $best_sellers,
            'mediumSize' => Image::getSize(ImageType::getFormatedName('medium')),
            'smallSize' => Image::getSize(ImageType::getFormatedName('small'))
        ));
        return $this->display(__FILE__, 'blockbestsellers.tpl');
    }
        
    public function hookLeftColumn($params)
    {
        return $this->hookRightColumn($params);
    }
    
    protected function getBestSellers($params)
    {
        if (Configuration::get('PS_CATALOG_MODE'))
            return false;

        if (!($result = ProductSale::getBestSalesLight((int)($params['cookie']->id_lang), 0, 5)))
            return (Configuration::get('PS_BLOCK_BESTSELLERS_DISPLAY') ? array() : false);

        $bestsellers = array();
        $currency = new Currency($params['cookie']->id_currency);
        $usetax = (Product::getTaxCalculationMethod((int)$this->context->customer->id) != PS_TAX_EXC);
        foreach ($result as &$row)
                  $row['price'] = Tools::displayPrice(Product::getPriceStatic((int)$row['id_product'], $usetax), $currency); 
        return $result;            
    }
}