"""AdGuard Control Hub switch platform."""
import logging
from typing import Any, Dict, List, Optional

from homeassistant.components.switch import SwitchEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.update_coordinator import CoordinatorEntity
from homeassistant.helpers.entity import DeviceInfo

from .api import AdGuardHomeAPI, AdGuardConnectionError
from .const import DOMAIN, MANUFACTURER

_LOGGER = logging.getLogger(__name__)


async def async_setup_entry(
    hass: HomeAssistant,
    config_entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up AdGuard Control Hub switch platform."""
    coordinator = hass.data[DOMAIN][config_entry.entry_id]["coordinator"]
    api = hass.data[DOMAIN][config_entry.entry_id]["api"]

    entities: List[SwitchEntity] = []

    # Add main protection switch
    entities.append(AdGuardProtectionSwitch(coordinator, api))

    # Add client switches
    for client_name in coordinator.clients:
        entities.append(AdGuardClientSwitch(coordinator, api, client_name))

    async_add_entities(entities)


class AdGuardProtectionSwitch(CoordinatorEntity, SwitchEntity):
    """AdGuard Home protection switch."""

    def __init__(self, coordinator, api: AdGuardHomeAPI) -> None:
        """Initialize the switch."""
        super().__init__(coordinator)
        self.api = api
        self._attr_name = "AdGuard Protection"
        self._attr_unique_id = f"{DOMAIN}_protection"

    @property
    def device_info(self) -> DeviceInfo:
        """Return device info."""
        return DeviceInfo(
            identifiers={(DOMAIN, "adguard_home")},
            name="AdGuard Home",
            manufacturer=MANUFACTURER,
            model="AdGuard Home",
            configuration_url=self.api.base_url,
        )

    @property
    def is_on(self) -> bool:
        """Return true if protection is enabled."""
        return self.coordinator.protection_status.get("protection_enabled", False)

    @property
    def icon(self) -> str:
        """Return the icon."""
        return "mdi:shield-check" if self.is_on else "mdi:shield-off"

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn on protection."""
        try:
            await self.api.set_protection(True)
            await self.coordinator.async_request_refresh()
        except AdGuardConnectionError as err:
            _LOGGER.error("Failed to turn on protection: %s", err)

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn off protection."""
        try:
            await self.api.set_protection(False)
            await self.coordinator.async_request_refresh()
        except AdGuardConnectionError as err:
            _LOGGER.error("Failed to turn off protection: %s", err)


class AdGuardClientSwitch(CoordinatorEntity, SwitchEntity):
    """AdGuard Home client switch."""

    def __init__(self, coordinator, api: AdGuardHomeAPI, client_name: str) -> None:
        """Initialize the client switch."""
        super().__init__(coordinator)
        self.api = api
        self._client_name = client_name
        self._attr_name = f"AdGuard {client_name}"
        self._attr_unique_id = f"{DOMAIN}_{client_name.lower().replace(' ', '_')}"

    @property
    def device_info(self) -> DeviceInfo:
        """Return device info."""
        return DeviceInfo(
            identifiers={(DOMAIN, f"client_{self._client_name}")},
            name=f"AdGuard Client: {self._client_name}",
            manufacturer=MANUFACTURER,
            model="AdGuard Client",
            via_device=(DOMAIN, "adguard_home"),
        )

    @property
    def is_on(self) -> bool:
        """Return true if client filtering is enabled."""
        client = self.coordinator.clients.get(self._client_name, {})
        return not client.get("filtering_enabled", True) is False

    @property
    def icon(self) -> str:
        """Return the icon."""
        return "mdi:devices" if self.is_on else "mdi:devices-off"

    @property
    def available(self) -> bool:
        """Return if entity is available."""
        return self._client_name in self.coordinator.clients

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Enable filtering for client."""
        try:
            client = await self.api.get_client_by_name(self._client_name)
            if client:
                client["filtering_enabled"] = True
                await self.api._request("POST", "/control/clients/update", json=client)
                await self.coordinator.async_request_refresh()
        except AdGuardConnectionError as err:
            _LOGGER.error("Failed to enable filtering for %s: %s", self._client_name, err)

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Disable filtering for client."""
        try:
            client = await self.api.get_client_by_name(self._client_name)
            if client:
                client["filtering_enabled"] = False
                await self.api._request("POST", "/control/clients/update", json=client)
                await self.coordinator.async_request_refresh()
        except AdGuardConnectionError as err:
            _LOGGER.error("Failed to disable filtering for %s: %s", self._client_name, err)