import secrets


class MicroUUID:
    def __init__(self):
        self.uuid = self.generate_uuid()

    def generate_uuid(self):
        # Generate a random UUID (version 4)
        random_bytes = secrets.token_bytes(16)
        # Set the version to 4 (randomly generated UUID)
        random_bytes = bytearray(random_bytes)
        random_bytes[6] = (random_bytes[6] & 0x0F) | 0x40
        # Set the variant to RFC 4122
        random_bytes[8] = (random_bytes[8] & 0x3F) | 0x80
        uid = "".join(f"{byte:02x}" for byte in random_bytes)
        return f"{uid[0:8]}-{uid[8:12]}-{uid[12:16]}-{uid[16:20]}-{uid[20:32]}"

    def __str__(self):
        return self.uuid


# Example usage:
def example():
    uuid_instance = MicroUUID()
    print(f"Generated UUID: {uuid_instance}")


if __name__ == "__main__":
    example()