@https_fn.on_call(
    cors=options.CorsOptions(
        cors_origins=["xxx"],
        cors_methods=["get", "post"],
    )
)
def new_gift(req: https_fn.Request) -> https_fn.Response:
    logger.info("Request Headers:", dict(req.headers))

    if req.authorization is None:
        # Throwing an HttpsError so that the client gets the error details.
        raise https_fn.HttpsError(
            code=https_fn.FunctionsErrorCode.FAILED_PRECONDITION,
            message="This never shows up anywhere!"
        )