trezor-firmware/src/apps/nem/namespace/serialize.py

from trezor.messages.NEMProvisionNamespace import NEMProvisionNamespace
from trezor.messages.NEMTransactionCommon import NEMTransactionCommon

from ..helpers import NEM_TRANSACTION_TYPE_PROVISION_NAMESPACE
from ..writers import write_bytes_with_length, write_common, write_uint32, write_uint64


def serialize_provision_namespace(
    common: NEMTransactionCommon, namespace: NEMProvisionNamespace, public_key: bytes
) -> bytearray:
    tx = write_common(
        common, bytearray(public_key), NEM_TRANSACTION_TYPE_PROVISION_NAMESPACE
    )

    write_bytes_with_length(tx, bytearray(namespace.sink))
    write_uint64(tx, namespace.fee)
    write_bytes_with_length(tx, bytearray(namespace.namespace))
    if namespace.parent:
        write_bytes_with_length(tx, bytearray(namespace.parent))
    else:
        write_uint32(tx, 0xffffffff)

    return tx