DROP FUNCTION IF EXISTS account.user_getMysqlRole;

DELIMITER $$
CREATE DEFINER=`root`@`%` FUNCTION `account`.`user_getMysqlRole`(vUserName VARCHAR(255)) RETURNS varchar(255) CHARSET utf8
BEGIN
/**
 * From a username, it returns the associated MySQL wich should be used when
 * using external authentication systems.
 *
 * @param vUserName The user name
 * @return The associated MySQL role
 */
	DECLARE vRole VARCHAR(255);

	SELECT CONCAT(IF(r.hasLogin, 'z-', ''), r.name) INTO vRole
		FROM role r 
			JOIN user u ON u.role = r.id
		WHERE u.name = vUserName;
	
	RETURN vRole;
END$$
DELIMITER ;