bebeboutik/override/controllers/ProductController.php

<?php
class ProductController extends ProductControllerCore {
	public function preProcess() {
		parent::preProcess();
		global $cookie;

		if(Module::isInstalled('privatesales')) {
			$id_category = $this->product->id_category_default;
			$sale = Sale::getSaleFromCategory($id_category);

			/* Finding out the right Category for thumb - 4 levels of category */
			$available_cat = $this->product->getCategories();
			$first_step_cats  = Category::getChildren($sale->id_category,$cookie->id_lang);
			foreach ($first_step_cats as $key => $first_step_cat) {
				if(in_array($first_step_cat['id_category'], $available_cat)){
					$first_step_cat = $first_step_cat['id_category'];
					break;
				}
			}
			$second_step_cats = (isset($first_step_cat))?Category::getChildren((int)$first_step_cat,$cookie->id_lang):array();
			foreach ($second_step_cats as $key => $second_step_cat) {
				if(in_array($second_step_cat['id_category'], $available_cat)){
					$second_step_cat = $second_step_cat['id_category'];
					break;
				}
			}
			$third_step_cats  = (isset($second_step_cat))?Category::getChildren((int)$second_step_cat,$cookie->id_lang):array();
			foreach ($third_step_cats as $key => $third_step_cat) {
				if(in_array($third_step_cat['id_category'], $available_cat)){
					$third_step_cat = $third_step_cat['id_category'];
					break;
				}
			}
 			if (isset($third_step_cat) && file_exists(_PS_ROOT_DIR_.'/img/c/'.(int)$third_step_cat.'_thumb_vp.jpg')) {
 				$id_category_thumb = (int)$third_step_cat;
 			} elseif (isset($second_step_cat) && file_exists(_PS_ROOT_DIR_.'/img/c/'.(int)$second_step_cat.'_thumb_vp.jpg')) {
 				$id_category_thumb = (int)$second_step_cat;
 			} elseif (isset($first_step_cat) && file_exists(_PS_ROOT_DIR_.'/img/c/'.(int)$first_step_cat.'_thumb_vp.jpg')) {
 				$id_category_thumb = (int)$first_step_cat;
			} else {
				// sale cat thumb
				$id_category_thumb = $sale->id_category;
			}

			self::$smarty->assign(array(
				'sale' => $sale,
				'HOOK_PRIVATESALES_PRODUCT' => Module::hookExec('privatesales_product', array('sale' => $sale)),
				'is_sale_home' => ($sale? $sale->id_category == $id_category: FALSE),
				'is_thumb_vp' => (file_exists(_PS_ROOT_DIR_.'/img/c/'.$id_category_thumb.'_thumb_vp.jpg')),
				'id_category_thumb' => $id_category_thumb,
			));

			// assign date estimation from sale delay
			if (Module::isInstalled('privatesales_delay')) {
				if (!class_exists('SaleDelay')) {
					require_once _PS_ROOT_DIR_.'/modules/privatesales_delay/saledelay.php';
				}
				$date = new DateTime();
				$delivery_date = SaleDelay::getDeliveryDate(array($sale->delivery_delay), null, $date, true);
			}
		}

		$bestSaleCart = Module::hookExec('bestSaleCart');
		self::$smarty->assign(array(
			'bestSaleCart' => $bestSaleCart,
			'product' => $this->product,
			'coverImage' => Product::getCover($this->product->id),
			'delivery_date' => (!empty($delivery_date)?$delivery_date:null),
		));
	}

	public function setMedia() {
		parent::setMedia();

		global $css_files;
		$css_files = array_slice($css_files, 0, 1);

		if(!_PS_MOBILE_) {
			Tools::addJS(array(
				_THEME_JS_DIR_.'jquery.mousewheel.js',
				_THEME_JS_DIR_.'jquery.jscrollpane.min.js'
			));
		}
	}
}