"""Support to interface with universal remote control devices."""
from __future__ import annotations

from collections.abc import Iterable
from dataclasses import dataclass
from datetime import timedelta
import functools as ft
import logging
from typing import Any, cast, final

import voluptuous as vol

from homeassistant.config_entries import ConfigEntry
from homeassistant.const import (
    ATTR_COMMAND,
    SERVICE_TOGGLE,
    SERVICE_TURN_OFF,
    SERVICE_TURN_ON,
    STATE_ON,
)
from homeassistant.core import HomeAssistant
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.config_validation import (  # noqa: F401
    PLATFORM_SCHEMA,
    PLATFORM_SCHEMA_BASE,
    make_entity_service_schema,
)
from homeassistant.helpers.entity import ToggleEntity, ToggleEntityDescription
from homeassistant.helpers.entity_component import EntityComponent
from homeassistant.helpers.typing import ConfigType
from homeassistant.loader import bind_hass

# mypy: allow-untyped-calls, allow-untyped-defs, no-check-untyped-defs

_LOGGER = logging.getLogger(__name__)

ATTR_ACTIVITY = "activity"
ATTR_ACTIVITY_LIST = "activity_list"
ATTR_CURRENT_ACTIVITY = "current_activity"
ATTR_COMMAND_TYPE = "command_type"
ATTR_DEVICE = "device"
ATTR_NUM_REPEATS = "num_repeats"
ATTR_DELAY_SECS = "delay_secs"
ATTR_HOLD_SECS = "hold_secs"
ATTR_ALTERNATIVE = "alternative"
ATTR_TIMEOUT = "timeout"

DOMAIN = "remote"
SCAN_INTERVAL = timedelta(seconds=30)

ENTITY_ID_FORMAT = DOMAIN + ".{}"

MIN_TIME_BETWEEN_SCANS = timedelta(seconds=10)

SERVICE_SEND_COMMAND = "send_command"
SERVICE_LEARN_COMMAND = "learn_command"
SERVICE_DELETE_COMMAND = "delete_command"
SERVICE_SYNC = "sync"

DEFAULT_NUM_REPEATS = 1
DEFAULT_DELAY_SECS = 0.4
DEFAULT_HOLD_SECS = 0

SUPPORT_LEARN_COMMAND = 1
SUPPORT_DELETE_COMMAND = 2
SUPPORT_ACTIVITY = 4

REMOTE_SERVICE_ACTIVITY_SCHEMA = make_entity_service_schema(
    {vol.Optional(ATTR_ACTIVITY): cv.string}
)


@bind_hass
def is_on(hass: HomeAssistant, entity_id: str) -> bool:
    """Return if the remote is on based on the statemachine."""
    return hass.states.is_state(entity_id, STATE_ON)


async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
    """Track states and offer events for remotes."""
    component = hass.data[DOMAIN] = EntityComponent(
        _LOGGER, DOMAIN, hass, SCAN_INTERVAL
    )
    await component.async_setup(config)

    component.async_register_entity_service(
        SERVICE_TURN_OFF, REMOTE_SERVICE_ACTIVITY_SCHEMA, "async_turn_off"
    )

    component.async_register_entity_service(
        SERVICE_TURN_ON, REMOTE_SERVICE_ACTIVITY_SCHEMA, "async_turn_on"
    )

    component.async_register_entity_service(
        SERVICE_TOGGLE, REMOTE_SERVICE_ACTIVITY_SCHEMA, "async_toggle"
    )

    component.async_register_entity_service(
        SERVICE_SEND_COMMAND,
        {
            vol.Required(ATTR_COMMAND): vol.All(cv.ensure_list, [cv.string]),
            vol.Optional(ATTR_DEVICE): cv.string,
            vol.Optional(
                ATTR_NUM_REPEATS, default=DEFAULT_NUM_REPEATS
            ): cv.positive_int,
            vol.Optional(ATTR_DELAY_SECS): vol.Coerce(float),
            vol.Optional(ATTR_HOLD_SECS, default=DEFAULT_HOLD_SECS): vol.Coerce(float),
        },
        "async_send_command",
    )

    component.async_register_entity_service(
        SERVICE_LEARN_COMMAND,
        {
            vol.Optional(ATTR_DEVICE): cv.string,
            vol.Optional(ATTR_COMMAND): vol.All(cv.ensure_list, [cv.string]),
            vol.Optional(ATTR_COMMAND_TYPE): cv.string,
            vol.Optional(ATTR_ALTERNATIVE): cv.boolean,
            vol.Optional(ATTR_TIMEOUT): cv.positive_int,
        },
        "async_learn_command",
    )

    component.async_register_entity_service(
        SERVICE_DELETE_COMMAND,
        {
            vol.Required(ATTR_COMMAND): vol.All(cv.ensure_list, [cv.string]),
            vol.Optional(ATTR_DEVICE): cv.string,
        },
        "async_delete_command",
    )

    return True


async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
    """Set up a config entry."""
    return await cast(EntityComponent, hass.data[DOMAIN]).async_setup_entry(entry)


async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
    """Unload a config entry."""
    return await cast(EntityComponent, hass.data[DOMAIN]).async_unload_entry(entry)


@dataclass
class RemoteEntityDescription(ToggleEntityDescription):
    """A class that describes remote entities."""


class RemoteEntity(ToggleEntity):
    """Base class for remote entities."""

    entity_description: RemoteEntityDescription
    _attr_activity_list: list[str] | None = None
    _attr_current_activity: str | None = None
    _attr_supported_features: int = 0

    @property
    def supported_features(self) -> int:
        """Flag supported features."""
        return self._attr_supported_features

    @property
    def current_activity(self) -> str | None:
        """Active activity."""
        return self._attr_current_activity

    @property
    def activity_list(self) -> list[str] | None:
        """List of available activities."""
        return self._attr_activity_list

    @final
    @property
    def state_attributes(self) -> dict[str, Any] | None:
        """Return optional state attributes."""
        if not self.supported_features & SUPPORT_ACTIVITY:
            return None

        return {
            ATTR_ACTIVITY_LIST: self.activity_list,
            ATTR_CURRENT_ACTIVITY: self.current_activity,
        }

    def send_command(self, command: Iterable[str], **kwargs: Any) -> None:
        """Send commands to a device."""
        raise NotImplementedError()

    async def async_send_command(self, command: Iterable[str], **kwargs: Any) -> None:
        """Send commands to a device."""
        await self.hass.async_add_executor_job(
            ft.partial(self.send_command, command, **kwargs)
        )

    def learn_command(self, **kwargs: Any) -> None:
        """Learn a command from a device."""
        raise NotImplementedError()

    async def async_learn_command(self, **kwargs: Any) -> None:
        """Learn a command from a device."""
        await self.hass.async_add_executor_job(ft.partial(self.learn_command, **kwargs))

    def delete_command(self, **kwargs: Any) -> None:
        """Delete commands from the database."""
        raise NotImplementedError()

    async def async_delete_command(self, **kwargs: Any) -> None:
        """Delete commands from the database."""
        await self.hass.async_add_executor_job(
            ft.partial(self.delete_command, **kwargs)
        )


class RemoteDevice(RemoteEntity):
    """Representation of a remote (for backwards compatibility)."""

    def __init_subclass__(cls, **kwargs):
        """Print deprecation warning."""
        super().__init_subclass__(**kwargs)
        _LOGGER.warning(
            "RemoteDevice is deprecated, modify %s to extend RemoteEntity",
            cls.__name__,
        )