custom_components/xiaomi_home/fan.py

# -*- coding: utf-8 -*-
"""
Copyright (C) 2024 Xiaomi Corporation.

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Integration and related Xiaomi cloud service API interface provided under this
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Fan entities for Xiaomi Home.
"""
from __future__ import annotations
from typing import Any, Optional
import logging

from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.components.fan import FanEntity, FanEntityFeature
from homeassistant.util.percentage import (
    percentage_to_ranged_value,
    ranged_value_to_percentage
)

from .miot.miot_spec import MIoTSpecProperty
from .miot.const import DOMAIN
from .miot.miot_device import MIoTDevice, MIoTEntityData, MIoTServiceEntity

_LOGGER = logging.getLogger(__name__)


async def async_setup_entry(
        hass: HomeAssistant,
        config_entry: ConfigEntry,
        async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up a config entry."""
    device_list: list[MIoTDevice] = hass.data[DOMAIN]['devices'][
        config_entry.entry_id]
    new_entities = []
    for miot_device in device_list:
        for data in miot_device.entity_list.get('fan', []):
            new_entities.append(Fan(miot_device=miot_device, entity_data=data))

    if new_entities:
        async_add_entities(new_entities)


class Fan(MIoTServiceEntity, FanEntity):
    """Fan entities for Xiaomi Home."""
    # pylint: disable=unused-argument
    _prop_on: Optional[MIoTSpecProperty]
    _prop_fan_level: Optional[MIoTSpecProperty]
    _prop_mode: Optional[MIoTSpecProperty]
    _prop_horizontal_swing: Optional[MIoTSpecProperty]

    _speed_min: Optional[int]
    _speed_max: Optional[int]
    _speed_step: Optional[int]
    _mode_list: Optional[dict[any, any]]

    def __init__(
        self, miot_device: MIoTDevice, entity_data: MIoTEntityData
    ) -> None:
        """Initialize the Fan."""
        super().__init__(miot_device=miot_device,  entity_data=entity_data)
        self._attr_preset_modes = []
        self._attr_supported_features = FanEntityFeature(0)

        self._prop_on = None
        self._prop_fan_level = None
        self._prop_mode = None
        self._prop_horizontal_swing = None
        self._speed_min = 65535
        self._speed_max = 0
        self._speed_step = 1
        self._mode_list = None

        # properties
        for prop in entity_data.props:
            if prop.name == 'on':
                self._attr_supported_features |= FanEntityFeature.TURN_ON
                self._attr_supported_features |= FanEntityFeature.TURN_OFF
                self._prop_on = prop
            elif prop.name == 'fan-level':
                if isinstance(prop.value_range, dict):
                    # Fan level with value-range
                    self._speed_min = prop.value_range['min']
                    self._speed_max = prop.value_range['max']
                    self._speed_step = prop.value_range['step']
                    self._attr_speed_count = self._speed_max - self._speed_min+1
                    self._attr_supported_features |= FanEntityFeature.SET_SPEED
                    self._prop_fan_level = prop
                elif (
                    self._prop_fan_level is None
                    and isinstance(prop.value_list, list)
                    and prop.value_list
                ):
                    # Fan level with value-list
                    for item in prop.value_list:
                        self._speed_min = min(self._speed_min, item['value'])
                        self._speed_max = max(self._speed_max, item['value'])
                    self._attr_speed_count = self._speed_max - self._speed_min+1
                    self._attr_supported_features |= FanEntityFeature.SET_SPEED
                    self._prop_fan_level = prop
            elif prop.name == 'mode':
                if (
                    not isinstance(prop.value_list, list)
                    or not prop.value_list
                ):
                    _LOGGER.error(
                        'mode value_list is None, %s', self.entity_id)
                    continue
                self._mode_list = {
                    item['value']: item['description']
                    for item in prop.value_list}
                self._attr_preset_modes = list(self._mode_list.values())
                self._attr_supported_features |= FanEntityFeature.PRESET_MODE
                self._prop_mode = prop
            elif prop.name == 'horizontal-swing':
                self._attr_supported_features |= FanEntityFeature.OSCILLATE
                self._prop_horizontal_swing = prop

    def __get_mode_description(self, key: int) -> Optional[str]:
        if self._mode_list is None:
            return None
        return self._mode_list.get(key, None)

    def __get_mode_value(self, description: str) -> Optional[int]:
        if self._mode_list is None:
            return None
        for key, value in self._mode_list.items():
            if value == description:
                return key
        return None

    async def async_turn_on(
        self, percentage: int = None, preset_mode: str = None, **kwargs: Any
    ) -> None:
        """Turn the fan on.

        Shall set the percentage or the preset_mode attr to complying
        if applicable.
        """
        # on
        await self.set_property_async(prop=self._prop_on, value=True)
        # percentage
        if percentage:
            await self.set_property_async(
                prop=self._prop_fan_level,
                value=int(percentage*self._attr_speed_count/100))
        # preset_mode
        if preset_mode:
            await self.set_property_async(
                self._prop_mode,
                value=self.__get_mode_value(description=preset_mode))

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn the fan off."""
        await self.set_property_async(prop=self._prop_on, value=False)

    async def async_toggle(self, **kwargs: Any) -> None:
        """Toggle the fan."""
        await self.set_property_async(prop=self._prop_on, value=not self.is_on)

    async def async_set_percentage(self, percentage: int) -> None:
        """Set the percentage of the fan speed."""
        if percentage > 0:
            await self.set_property_async(
                prop=self._prop_fan_level,
                value=int(percentage_to_ranged_value(
                    low_high_range=(self._speed_min, self._speed_max),
                    percentage=percentage)))
            if not self.is_on:
                # If the fan is off, turn it on.
                await self.set_property_async(prop=self._prop_on, value=True)
        else:
            await self.set_property_async(prop=self._prop_on, value=False)

    async def async_set_preset_mode(self, preset_mode: str) -> None:
        """Set the preset mode."""
        await self.set_property_async(
            self._prop_mode,
            value=self.__get_mode_value(description=preset_mode))

    async def async_set_direction(self, direction: str) -> None:
        """Set the direction of the fan."""

    async def async_oscillate(self, oscillating: bool) -> None:
        """Oscillate the fan."""
        await self.set_property_async(
            prop=self._prop_horizontal_swing, value=oscillating)

    @property
    def is_on(self) -> Optional[bool]:
        """Return if the fan is on. """
        return self.get_prop_value(
            prop=self._prop_on) if self._prop_on else None

    @property
    def preset_mode(self) -> Optional[str]:
        """Return the current preset mode,
        e.g., auto, smart, eco, favorite."""
        return (
            self.__get_mode_description(
                key=self.get_prop_value(prop=self._prop_mode))
            if self._prop_mode else None)

    @property
    def percentage(self) -> Optional[int]:
        """Return the current percentage of the fan speed."""
        fan_level = self.get_prop_value(prop=self._prop_fan_level)
        return ranged_value_to_percentage(
            low_high_range=(self._speed_min, self._speed_max),
            value=fan_level) if fan_level else None

    @property
    def oscillating(self) -> Optional[bool]:
        """Return if the fan is oscillating."""
        return (
            self.get_prop_value(
                prop=self._prop_horizontal_swing)
            if self._prop_horizontal_swing else None)

    @property
    def percentage_step(self) -> float:
        """Return the step of the fan speed."""
        return self._speed_step