"""Fan setup for our Integration."""

import logging
from typing import Any

from homeassistant.components.fan import FanEntity, FanEntityFeature
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.util.percentage import percentage_to_ranged_value

from . import MyConfigEntry
from .base import ExampleBaseEntity
from .coordinator import ExampleCoordinator

_LOGGER = logging.getLogger(__name__)


async def async_setup_entry(
    hass: HomeAssistant,
    config_entry: MyConfigEntry,
    async_add_entities: AddEntitiesCallback,
):
    """Set up the Fans."""
    # This gets the data update coordinator from the config entry runtime data as specified in your __init__.py
    coordinator: ExampleCoordinator = config_entry.runtime_data.coordinator

    # ----------------------------------------------------------------------------
    # Here we are going to add our fan entity for the fan in our mock data.
    # ----------------------------------------------------------------------------

    # Fans
    fans = [
        ExampleFan(coordinator, device, "state")
        for device in coordinator.data
        if device.get("device_type") == "FAN"
    ]

    # Create the fans.
    async_add_entities(fans)


class ExampleFan(ExampleBaseEntity, FanEntity):
    """Implementation of a fan.

    This inherits our ExampleBaseEntity to set common properties.
    See base.py for this class.

    https://developers.home-assistant.io/docs/core/entity/fan/
    """

    _attr_speed_count = 3
    _attr_supported_features = FanEntityFeature.OSCILLATE | FanEntityFeature.SET_SPEED

    _speed_parameter = "speed"
    _oscillating_parameter = "oscillating"

    @property
    def is_on(self) -> bool | None:
        """Return if the fan is on."""
        # This needs to enumerate to true or false
        return (
            self.coordinator.get_device_parameter(self.device_id, self.parameter)
            == "ON"
        )

    @property
    def oscillating(self) -> bool | None:
        """Return whether or not the fan is currently oscillating."""
        # This needs to enumerate to true or false
        return (
            self.coordinator.get_device_parameter(
                self.device_id, self._oscillating_parameter
            )
            == "ON"
        )

    @property
    def percentage(self) -> int | None:
        """Return the current speed as a percentage."""
        speed = self.coordinator.get_device_parameter(
            self.device_id, self._speed_parameter
        )
        # Need to return a percentage but our fan has speeds 0,1,2,3
        return int(self.percentage_step * speed)

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

        A turn on command can be sent with or without a %, so we
        need to check that and turn on and set speed if requested.
        """

        await self.hass.async_add_executor_job(
            self.coordinator.api.set_data, self.device_id, self.parameter, "ON"
        )

        if percentage:
            self.async_set_fan_speed(percentage)
        # ----------------------------------------------------------------------------
        # Use async_refresh on the DataUpdateCoordinator to perform immediate update.
        # Using self.async_update or self.coordinator.async_request_refresh may delay update due
        # to trying to batch requests.
        # ----------------------------------------------------------------------------
        await self.coordinator.async_refresh()

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn the fan off."""

        await self.hass.async_add_executor_job(
            self.coordinator.api.set_data, self.device_id, self.parameter, "OFF"
        )
        await self.coordinator.async_refresh()

    async def async_set_percentage(self, percentage: int) -> None:
        """Set the speed of the fan, as a percentage.

        Here we need to apply some logic if % is 0 to turn the fan
        off instead of setting its speed.  If the fan is off, turn it on with
        the speed setting, otherwise just set the speed setting.
        """

        if percentage == 0:
            await self.async_turn_off()
        elif not self.is_on:
            await self.async_turn_on(percentage)
        else:
            await self.async_set_fan_speed(percentage)
            await self.coordinator.async_refresh()

    async def async_oscillate(self, oscillating: bool) -> None:
        """Oscillate the fan."""

        await self.hass.async_add_executor_job(
            self.coordinator.api.set_data,
            self.device_id,
            self._oscillating_parameter,
            "ON" if oscillating else "OFF",
        )
        await self.coordinator.async_refresh()

    # ----------------------------------------------------------------------------
    # Added a custom method to make our code simpler
    # ----------------------------------------------------------------------------

    async def async_set_fan_speed(self, percentage: int) -> None:
        """Set fan speed."""
        await self.hass.async_add_executor_job(
            self.coordinator.api.set_data,
            self.device_id,
            self._speed_parameter,
            percentage_to_ranged_value(1, self.speed_count, percentage),
        )