from __future__ import annotations

from dataclasses import dataclass

@dataclass
class DeviceModel:
    """Class to describe a device model."""
    name: str
    advertisement_data_contains_state: bool

    notify_characteristics: list[str]
    write_characteristics: list[str]
    battery_characteristics: list[str]

    auth_characteristics: list[str]

@dataclass(frozen=True)
class EufyLifeBLEState:
    weight_kg: float = None
    final_weight_kg: float = None
    heart_rate: float = None
    max_weight_exceeded: bool = None