"""Update entities for Reolink devices."""
from __future__ import annotations

import logging
from typing import Any, Literal

from reolink_aio.exceptions import ReolinkError
from reolink_aio.software_version import NewSoftwareVersion

from homeassistant.components.update import (
    UpdateDeviceClass,
    UpdateEntity,
    UpdateEntityFeature,
)
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers.entity_platform import AddEntitiesCallback

from . import ReolinkData
from .const import DOMAIN
from .entity import ReolinkBaseCoordinatorEntity

LOGGER = logging.getLogger(__name__)


async def async_setup_entry(
    hass: HomeAssistant,
    config_entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up update entities for Reolink component."""
    reolink_data: ReolinkData = hass.data[DOMAIN][config_entry.entry_id]
    async_add_entities([ReolinkUpdateEntity(reolink_data)])


class ReolinkUpdateEntity(
    ReolinkBaseCoordinatorEntity[str | Literal[False]], UpdateEntity
):
    """Update entity for a Netgear device."""

    _attr_device_class = UpdateDeviceClass.FIRMWARE
    _attr_release_url = "https://reolink.com/download-center/"
    _attr_name = "Update"

    def __init__(
        self,
        reolink_data: ReolinkData,
    ) -> None:
        """Initialize a Netgear device."""
        super().__init__(reolink_data, reolink_data.firmware_coordinator)

        self._attr_unique_id = f"{self._host.unique_id}"

    @property
    def installed_version(self) -> str | None:
        """Version currently in use."""
        return self._host.api.sw_version

    @property
    def latest_version(self) -> str | None:
        """Latest version available for install."""
        if not self.coordinator.data:
            return self.installed_version

        if isinstance(self.coordinator.data, str):
            return self.coordinator.data

        return self.coordinator.data.version_string

    @property
    def supported_features(self) -> UpdateEntityFeature:
        """Flag supported features."""
        supported_features = UpdateEntityFeature.INSTALL
        if isinstance(self.coordinator.data, NewSoftwareVersion):
            supported_features |= UpdateEntityFeature.RELEASE_NOTES
        return supported_features

    async def async_release_notes(self) -> str | None:
        """Return the release notes."""
        if not isinstance(self.coordinator.data, NewSoftwareVersion):
            return None

        return (
            "If the install button fails, download this"
            f" [firmware zip file]({self.coordinator.data.download_url})."
            " Then, follow the installation guide (PDF in the zip file).\n\n"
            f"## Release notes\n\n{self.coordinator.data.release_notes}"
        )

    async def async_install(
        self, version: str | None, backup: bool, **kwargs: Any
    ) -> None:
        """Install the latest firmware version."""
        try:
            await self._host.api.update_firmware()
        except ReolinkError as err:
            raise HomeAssistantError(
                f"Error trying to update Reolink firmware: {err}"
            ) from err