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"""
Module for managing an DPT Step remote value.
DPT 1.007.
"""
from __future__ import annotations
from enum import Enum
from typing import TYPE_CHECKING
from xknx.dpt import DPTArray, DPTBinary
from xknx.exceptions import ConversionError, CouldNotParseTelegram
from .remote_value import GroupAddressesType, RemoteValue, RVCallbackType
if TYPE_CHECKING:
from xknx.xknx import XKNX
class RemoteValueStep(RemoteValue["RemoteValueStep.Direction"]):
"""Abstraction for remote value of KNX DPT 1.007 / DPT_Step."""
class Direction(Enum):
"""Enum for indicating the direction."""
DECREASE = 0
INCREASE = 1
def __init__(
self,
xknx: XKNX,
group_address: GroupAddressesType = None,
group_address_state: GroupAddressesType = None,
device_name: str | None = None,
feature_name: str = "Step",
after_update_cb: RVCallbackType[Direction] | None = None,
invert: bool = False,
) -> None:
"""Initialize remote value of KNX DPT 1.007."""
super().__init__(
xknx,
group_address,
group_address_state,
device_name=device_name,
feature_name=feature_name,
after_update_cb=after_update_cb,
)
self.invert = invert
# from KNX Association System Specifications AS v1.5.00:
# 1.007 DPT_Step 0 = Decrease 1 = Increase
# 1.008 DPT_UpDown 0 = Up 1 = Down
def to_knx(self, value: RemoteValueStep.Direction) -> DPTBinary:
"""Convert value to payload."""
if value == self.Direction.INCREASE:
return DPTBinary(0) if self.invert else DPTBinary(1)
if value == self.Direction.DECREASE:
return DPTBinary(1) if self.invert else DPTBinary(0)
raise ConversionError(
"value invalid",
value=value,
device_name=self.device_name,
feature_name=self.feature_name,
)
def from_knx(self, payload: DPTArray | DPTBinary) -> RemoteValueStep.Direction:
"""Convert current payload to value."""
if payload.value == 1:
return self.Direction.DECREASE if self.invert else self.Direction.INCREASE
if payload.value == 0:
return self.Direction.INCREASE if self.invert else self.Direction.DECREASE
raise CouldNotParseTelegram(
"Payload invalid",
payload=payload,
device_name=self.device_name,
feature_name=self.feature_name,
)
def increase(self) -> None:
"""Increase value."""
self.set(self.Direction.INCREASE)
def decrease(self) -> None:
"""Decrease the value."""
self.set(self.Direction.DECREASE)
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