<?php

class ProductSale extends ProductSaleCore 
{

  	public static function getProductHome($id_lang, $page_number = 0, $nb_products = 10, $order_by = null, $order_way = null)
	{
        $context = Context::getContext();
        if ($page_number < 0) {
            $page_number = 0;
        }
        if ($nb_products < 1) {
            $nb_products = 10;
        }
        $final_order_by = $order_by;
        $order_table = '';

        if (is_null($order_by)) {
            $order_by = 'id_product';
            $order_table = 'p';
        }

        if ($order_by == 'date_add' || $order_by == 'date_upd') {
            $order_table = 'product_shop';
        }

        if (is_null($order_way) || $order_by == 'sales') {
            $order_way = 'DESC';
        }

        $interval = Validate::isUnsignedInt(Configuration::get('PS_NB_DAYS_NEW_PRODUCT')) ? Configuration::get('PS_NB_DAYS_NEW_PRODUCT') : 20;

        // no group by needed : there's only one attribute with default_on=1 for a given id_product + shop
        // same for image with cover=1
        $sql = 'SELECT p.*, product_shop.*, stock.out_of_stock, IFNULL(stock.quantity, 0) as quantity,
					'.(Combination::isFeatureActive()?'product_attribute_shop.minimal_quantity AS product_attribute_minimal_quantity,IFNULL(product_attribute_shop.id_product_attribute,0) id_product_attribute,':'').'
					pl.`description`, pl.`description_short`, pl.`link_rewrite`, pl.`meta_description`,
					pl.`meta_keywords`, pl.`meta_title`, pl.`name`, pl.`available_now`, pl.`available_later`,
					m.`name` AS manufacturer_name, p.`id_manufacturer` as id_manufacturer,
					image_shop.`id_image` id_image, il.`legend`, t.`rate`, pl.`meta_keywords`, pl.`meta_title`, pl.`meta_description`,
					DATEDIFF(p.`date_add`, DATE_SUB("'.date('Y-m-d').' 00:00:00",
					INTERVAL '.(int)$interval.' DAY)) > 0 AS new'
                .'  FROM `'._DB_PREFIX_.'product` p 
				'.Shop::addSqlAssociation('product', 'p', false);
        if (Combination::isFeatureActive()) {
            $sql .= ' LEFT JOIN `'._DB_PREFIX_.'product_attribute_shop` product_attribute_shop
							ON (p.`id_product` = product_attribute_shop.`id_product` AND product_attribute_shop.`default_on` = 1 AND product_attribute_shop.id_shop='.(int)$context->shop->id.')';
        }

        $sql .=    ' LEFT JOIN `'._DB_PREFIX_.'product_lang` pl
					ON p.`id_product` = pl.`id_product`
					AND pl.`id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('pl').'
				LEFT JOIN `'._DB_PREFIX_.'image_shop` image_shop
					ON (image_shop.`id_product` = p.`id_product` AND image_shop.cover=1 AND image_shop.id_shop='.(int)$context->shop->id.')
				LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (image_shop.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
				LEFT JOIN `'._DB_PREFIX_.'manufacturer` m ON (m.`id_manufacturer` = p.`id_manufacturer`)
				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (product_shop.`id_tax_rules_group` = tr.`id_tax_rules_group`)
					AND tr.`id_country` = '.(int)$context->country->id.'
					AND tr.`id_state` = 0
                LEFT JOIN `'._DB_PREFIX_.'category_product` cprod ON (cprod.`id_product` = p.`id_product`) 
				LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
				'.Product::sqlStock('p', 0);

        $sql .= '
				WHERE product_shop.`active` = 1
                    AND cprod.`id_category` = 2 
					AND p.`visibility` != \'none\'';

        if ($final_order_by != 'price') {
            $sql .= '
					ORDER BY RAND() 
					LIMIT '.(int)($page_number * $nb_products).', '.(int)$nb_products;
        }

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

        if ($final_order_by == 'price') {
            Tools::orderbyPrice($result, $order_way);
        }
        if (!$result) {
            return false;
        }
        return Product::getProductsProperties($id_lang, $result);
    }

}