OpenCart 🇺🇦

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

$sql = "SELECT COUNT(DISTINCT p.product_id) AS total"; 

if (!empty($data['filter_category_id'])) {
	if (!empty($data['filter_sub_category'])) {
		$sql .= " FROM " . DB_PREFIX . "category_path cp LEFT JOIN " . DB_PREFIX . "product_to_category p2c ON (cp.category_id = p2c.category_id)";			
	} else {
		$sql .= " FROM " . DB_PREFIX . "product_to_category p2c";
	}

	if (!empty($data['filter_filter'])) {
		$sql .= " LEFT JOIN " . DB_PREFIX . "product_filter pf ON (p2c.product_id = pf.product_id) LEFT JOIN " . DB_PREFIX . "product p ON (pf.product_id = p.product_id)";
	} else {
		$sql .= " LEFT JOIN " . DB_PREFIX . "product p ON (p2c.product_id = p.product_id)";
	}
} else {
	$sql .= " FROM " . DB_PREFIX . "product p";
}

$sql .= " LEFT JOIN " . DB_PREFIX . "product_description pd ON (p.product_id = pd.product_id) LEFT JOIN " . DB_PREFIX . "product_to_store p2s ON (p.product_id = p2s.product_id) WHERE pd.language_id = '" . (int)$this->config->get('config_language_id') . "' AND p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '" . (int)$this->config->get('config_store_id') . "'";

if (!empty($data['filter_category_id'])) {
	if (!empty($data['filter_sub_category'])) {
		$sql .= " AND cp.path_id = '" . (int)$data['filter_category_id'] . "'";	
	} else {
		$sql .= " AND p2c.category_id = '" . (int)$data['filter_category_id'] . "'";			
	}	

	if (!empty($data['filter_filter'])) {
		$implode = array();

		$filters = explode(',', $data['filter_filter']);

		foreach ($filters as $filter_id) {
			$implode[] = (int)$filter_id;
		}

		$sql .= " AND pf.filter_id IN (" . implode(',', $implode) . ")";				
	}
}

if (!empty($data['filter_name']) || !empty($data['filter_tag'])) {
	$sql .= " AND (";

	if (!empty($data['filter_name'])) {
		$implode = array();

		$words = explode(' ', trim(preg_replace('/\s\s+/', ' ', $data['filter_name'])));

		foreach ($words as $word) {
			$implode[] = "pd.name LIKE '%" . $this->db->escape($word) . "%'";
		}

		if ($implode) {
			$sql .= " " . implode(" AND ", $implode) . "";
		}

		if (!empty($data['filter_description'])) {
			$sql .= " OR pd.description LIKE '%" . $this->db->escape($data['filter_name']) . "%'";
		}
	}

	if (!empty($data['filter_name']) && !empty($data['filter_tag'])) {
		$sql .= " OR ";
	}

	if (!empty($data['filter_tag'])) {
		$sql .= "pd.tag LIKE '%" . $this->db->escape(utf8_strtolower($data['filter_tag'])) . "%'";
	}

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.model) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.sku) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}	

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.upc) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}		

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.ean) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.jan) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.isbn) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}		

	if (!empty($data['filter_name'])) {
		$sql .= " OR LCASE(p.mpn) = '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "'";
	}

	$sql .= ")";				
}

if (!empty($data['filter_manufacturer_id'])) {
	$sql .= " AND p.manufacturer_id = '" . (int)$data['filter_manufacturer_id'] . "'";
}

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

return $query->row['total'];