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"""Implementation of KNX RGB color data point type."""
from __future__ import annotations
from collections.abc import Mapping
from dataclasses import dataclass
from typing import Any
from .dpt import DPTComplex, DPTComplexData
from .payload import DPTArray, DPTBinary
@dataclass(slots=True)
class RGBColor(DPTComplexData):
"""
Representation of RGB color.
`red`: int 0..255
`green`: int 0..255
`blue`: int 0..255
"""
red: int
green: int
blue: int
@classmethod
def from_dict(cls, data: Mapping[str, Any]) -> RGBColor:
"""Init from a dictionary."""
try:
red = int(data["red"])
green = int(data["green"])
blue = int(data["blue"])
except KeyError as err:
raise ValueError(f"Missing required key: {err}") from err
except (ValueError, TypeError) as err:
raise ValueError(f"Invalid value for RGB color: {err}") from err
return cls(red=red, green=green, blue=blue)
def as_dict(self) -> dict[str, int]:
"""Create a JSON serializable dictionary."""
return {
"red": self.red,
"green": self.green,
"blue": self.blue,
}
class DPTColorRGB(DPTComplex[RGBColor]):
"""Abstraction for KNX 3 octet color RGB (DPT 232.600)."""
data_type = RGBColor
payload_type = DPTArray
payload_length = 3
dpt_main_number = 232
dpt_sub_number = 600
value_type = "color_rgb"
@classmethod
def from_knx(cls, payload: DPTArray | DPTBinary) -> RGBColor:
"""Parse/deserialize from KNX/IP raw data."""
raw = cls.validate_payload(payload)
return RGBColor(
red=raw[0],
green=raw[1],
blue=raw[2],
)
@classmethod
def _to_knx(cls, value: RGBColor) -> DPTArray:
"""Serialize to KNX/IP raw data."""
colors: tuple[int, int, int] = (value.red, value.green, value.blue)
for color in colors:
if not 0 <= color <= 255:
raise ValueError(f"Color value out of range 0..255: {value}")
return DPTArray(colors)
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