"""AdGuard Control Hub services."""
import asyncio
import logging
from typing import Any, Dict, List

from homeassistant.core import HomeAssistant, ServiceCall
from homeassistant.helpers import config_validation as cv
import voluptuous as vol

from .api import AdGuardConnectionError, AdGuardHomeError
from .const import (
    ATTR_CLIENT_NAME,
    ATTR_CLIENTS,
    ATTR_DURATION,
    ATTR_SERVICES,
    BLOCKED_SERVICES,
    DOMAIN,
    SERVICE_ADD_CLIENT,
    SERVICE_BLOCK_SERVICES,
    SERVICE_EMERGENCY_UNBLOCK,
    SERVICE_REFRESH_DATA,
    SERVICE_REMOVE_CLIENT,
    SERVICE_UNBLOCK_SERVICES,
)

_LOGGER = logging.getLogger(__name__)


class AdGuardControlHubServices:
    """AdGuard Control Hub services."""

    def __init__(self, hass: HomeAssistant) -> None:
        """Initialize services."""
        self.hass = hass

    def register_services(self) -> None:
        """Register services."""
        # FIXED: All service constants are now properly defined
        self.hass.services.register(
            DOMAIN,
            SERVICE_BLOCK_SERVICES,
            self.block_services,
        )

        self.hass.services.register(
            DOMAIN,
            SERVICE_UNBLOCK_SERVICES,
            self.unblock_services,
        )

        self.hass.services.register(
            DOMAIN,
            SERVICE_EMERGENCY_UNBLOCK,
            self.emergency_unblock,
        )

        self.hass.services.register(
            DOMAIN,
            SERVICE_ADD_CLIENT,
            self.add_client,
        )

        self.hass.services.register(
            DOMAIN,
            SERVICE_REMOVE_CLIENT,
            self.remove_client,
        )

        self.hass.services.register(
            DOMAIN,
            SERVICE_REFRESH_DATA,
            self.refresh_data,
        )

        _LOGGER.info("AdGuard Control Hub services registered")

    def unregister_services(self) -> None:
        """Unregister services."""
        services = [
            SERVICE_BLOCK_SERVICES,
            SERVICE_UNBLOCK_SERVICES,
            SERVICE_EMERGENCY_UNBLOCK,
            SERVICE_ADD_CLIENT,
            SERVICE_REMOVE_CLIENT,
            SERVICE_REFRESH_DATA,
        ]

        for service in services:
            if self.hass.services.has_service(DOMAIN, service):
                self.hass.services.remove(DOMAIN, service)

        _LOGGER.info("AdGuard Control Hub services unregistered")

    def _get_api(self):
        """Get API instance from first available entry."""
        for entry_id, entry_data in self.hass.data[DOMAIN].items():
            if isinstance(entry_data, dict) and "api" in entry_data:
                return entry_data["api"]
        raise AdGuardConnectionError("No AdGuard Control Hub API available")

    def _get_coordinator(self):
        """Get coordinator instance from first available entry."""
        for entry_id, entry_data in self.hass.data[DOMAIN].items():
            if isinstance(entry_data, dict) and "coordinator" in entry_data:
                return entry_data["coordinator"]
        raise AdGuardConnectionError("No AdGuard Control Hub coordinator available")

    async def block_services(self, call: ServiceCall) -> None:
        """Block services for a client."""
        client_name = call.data[ATTR_CLIENT_NAME]
        services_to_block = call.data[ATTR_SERVICES]

        try:
            api = self._get_api()
            client = await api.get_client_by_name(client_name)

            if not client:
                _LOGGER.error("Client '%s' not found", client_name)
                return

            # Get current blocked services and add new ones
            current_blocked = set(client.get("blocked_services", []))
            current_blocked.update(services_to_block)

            await api.update_client_blocked_services(
                client_name, list(current_blocked)
            )

            coordinator = self._get_coordinator()
            await coordinator.async_request_refresh()

            _LOGGER.info(
                "Blocked services %s for client '%s'", services_to_block, client_name
            )

        except AdGuardHomeError as err:
            _LOGGER.error("Failed to block services for '%s': %s", client_name, err)

    async def unblock_services(self, call: ServiceCall) -> None:
        """Unblock services for a client."""
        client_name = call.data[ATTR_CLIENT_NAME]
        services_to_unblock = call.data[ATTR_SERVICES]

        try:
            api = self._get_api()
            client = await api.get_client_by_name(client_name)

            if not client:
                _LOGGER.error("Client '%s' not found", client_name)
                return

            # Get current blocked services and remove specified ones
            current_blocked = set(client.get("blocked_services", []))
            current_blocked.difference_update(services_to_unblock)

            await api.update_client_blocked_services(
                client_name, list(current_blocked)
            )

            coordinator = self._get_coordinator()
            await coordinator.async_request_refresh()

            _LOGGER.info(
                "Unblocked services %s for client '%s'", services_to_unblock, client_name
            )

        except AdGuardHomeError as err:
            _LOGGER.error("Failed to unblock services for '%s': %s", client_name, err)

    async def emergency_unblock(self, call: ServiceCall) -> None:
        """Emergency unblock - disable protection temporarily."""
        duration = call.data.get(ATTR_DURATION, 300)
        clients = call.data.get(ATTR_CLIENTS, ["all"])

        try:
            api = self._get_api()

            if "all" in clients:
                # Global protection disable
                await api.set_protection(False)
                _LOGGER.warning(
                    "Emergency unblock activated globally for %d seconds", duration
                )

            coordinator = self._get_coordinator()
            await coordinator.async_request_refresh()

            # Schedule re-enabling protection
            async def restore_protection():
                await asyncio.sleep(duration)
                try:
                    if "all" in clients:
                        await api.set_protection(True)

                    await coordinator.async_request_refresh()
                    _LOGGER.info("Emergency unblock period ended, protection restored")
                except Exception as err:
                    _LOGGER.error("Failed to restore protection after emergency unblock: %s", err)

            # Schedule restoration
            self.hass.async_create_task(restore_protection())

        except AdGuardHomeError as err:
            _LOGGER.error("Failed to activate emergency unblock: %s", err)

    async def add_client(self, call: ServiceCall) -> None:
        """Add a new client."""
        client_data = dict(call.data)

        try:
            api = self._get_api()
            await api.add_client(client_data)

            coordinator = self._get_coordinator()
            await coordinator.async_request_refresh()

            _LOGGER.info("Added new client: %s", client_data["name"])

        except AdGuardHomeError as err:
            _LOGGER.error("Failed to add client '%s': %s", client_data["name"], err)

    async def remove_client(self, call: ServiceCall) -> None:
        """Remove a client."""
        client_name = call.data["name"]

        try:
            api = self._get_api()
            await api.delete_client(client_name)

            coordinator = self._get_coordinator()
            await coordinator.async_request_refresh()

            _LOGGER.info("Removed client: %s", client_name)

        except AdGuardHomeError as err:
            _LOGGER.error("Failed to remove client '%s': %s", client_name, err)

    async def refresh_data(self, call: ServiceCall) -> None:
        """Refresh data from AdGuard Home."""
        try:
            coordinator = self._get_coordinator()
            await coordinator.async_request_refresh()

            _LOGGER.info("Data refresh requested")

        except Exception as err:
            _LOGGER.error("Failed to refresh data: %s", err)