public static function normalize($db, $userid, $parameters)
{
$tripid = Exporter::get_default("t", $parameters);
$tripname = Exporter::get_default("tn", $parameters);
if (!is_null($tripname)) {
if (!is_null($tripid)) {
throw new InvalidArgumentException("Either define trip id or name but not both.");
} else {
if ($tripname === "<None>") {
$tripid = null;
} else {
if ($tripname === "") {
$tripid = true;
} else {
$tripid = $db->exec_sql("SELECT `ID` FROM `trips` WHERE `Name` = ? AND `FK_Users_ID` = ?", $tripname, $userid)->fetchColumn();
}
}
}
} else {
if (!is_null($tripid)) {
if ($tripid === "n") {
$tripid = null;
} else {
if ($tripid === "a") {
$tripid = true;
} else {
if (ctype_digit($parameters["t"])) {
$tripid = intval($tripid);
} else {
throw new InvalidArgumentException("Trip id must be number.");
}
}
}
} else {
throw new InvalidArgumentException("Neither tripname or trip id are defined.");
}
}
return $tripid;
}