trezor-firmware/core/src/apps/nem/get_address.py

from typing import TYPE_CHECKING

from apps.common.keychain import with_slip44_keychain

from . import CURVE, PATTERNS, SLIP44_ID

if TYPE_CHECKING:
    from apps.common.keychain import Keychain
    from trezor.messages import NEMGetAddress, NEMAddress


@with_slip44_keychain(*PATTERNS, slip44_id=SLIP44_ID, curve=CURVE)
async def get_address(msg: NEMGetAddress, keychain: Keychain) -> NEMAddress:
    from trezor.messages import NEMAddress
    from trezor.ui.layouts import show_address
    from apps.common.paths import address_n_to_str, validate_path
    from .helpers import check_path, get_network_str
    from .validators import validate_network

    address_n = msg.address_n  # local_cache_attribute
    network = msg.network  # local_cache_attribute

    validate_network(network)
    await validate_path(keychain, address_n, check_path(address_n, network))

    node = keychain.derive(address_n)
    address = node.nem_address(network)

    if msg.show_display:
        await show_address(
            address,
            case_sensitive=False,
            path=address_n_to_str(address_n),
            network=get_network_str(network),
        )

    return NEMAddress(address=address)