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"""Meter Command Class specific utility functions for values."""
from __future__ import annotations
from ...const import CommandClass
from ...const.command_class.meter import (
CC_SPECIFIC_METER_TYPE,
CC_SPECIFIC_SCALE,
METER_TYPE_TO_SCALE_ENUM_MAP,
MeterScaleType,
MeterType,
)
from ...exceptions import InvalidCommandClass, UnknownValueData
from ...model.value import Value
def get_meter_type(value: Value) -> MeterType:
"""Get the MeterType for a given value."""
if value.command_class != CommandClass.METER:
raise InvalidCommandClass(value, CommandClass.METER)
try:
return MeterType(value.metadata.cc_specific[CC_SPECIFIC_METER_TYPE])
except ValueError:
raise UnknownValueData(
value, f"metadata.cc_specific.{CC_SPECIFIC_METER_TYPE}"
) from None
def get_meter_scale_type(value: Value) -> MeterScaleType:
"""Get the ScaleType for a given value."""
meter_type = get_meter_type(value)
scale_enum = METER_TYPE_TO_SCALE_ENUM_MAP[meter_type]
try:
return scale_enum(value.metadata.cc_specific[CC_SPECIFIC_SCALE])
except ValueError:
raise UnknownValueData(
value, f"metadata.cc_specific.{CC_SPECIFIC_SCALE}"
) from None
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