OpenCart 🇺🇦

if ($this->customer->isLogged()) {
	$customer_group_id = $this->customer->getCustomerGroupId();
} else {
	$customer_group_id = $this->config->get('config_customer_group_id');
}	

$sql = "SELECT DISTINCT ps.product_id, (SELECT AVG(rating) FROM " . DB_PREFIX . "review r1 WHERE r1.product_id = ps.product_id AND r1.status = '1' GROUP BY r1.product_id) AS rating FROM " . DB_PREFIX . "product_special ps LEFT JOIN " . DB_PREFIX . "product p ON (ps.product_id = p.product_id) LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "' AND ps.customer_group_id = '" . (int)$customer_group_id . "' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) GROUP BY ps.product_id";

$sort_data = array(
	'pd.name',
	'p.model',
	'ps.price',
	'rating',
	'p.sort_order'
);

if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
	if ($data['sort'] == 'pd.name' || $data['sort'] == 'p.model') {
		$sql .= " ORDER BY LCASE(" . $data['sort'] . ")";
	} else {
		$sql .= " ORDER BY " . $data['sort'];
	}
} else {
	$sql .= " ORDER BY p.sort_order";	
}

if (isset($data['order']) && ($data['order'] == 'DESC')) {
	$sql .= " DESC, LCASE(pd.name) DESC";
} else {
	$sql .= " ASC, LCASE(pd.name) ASC";
}

if (isset($data['start']) || isset($data['limit'])) {
	if ($data['start'] < 0) {
		$data['start'] = 0;
	}				

	if ($data['limit'] < 1) {
		$data['limit'] = 20;
	}	

	$sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
}

$product_data = array();

$query = $this->db->query($sql);

foreach ($query->rows as $result) { 		
	$product_data[$result['product_id']] = $this->getProduct($result['product_id']);
}

return $product_data;