"""Module for Device base class."""

from __future__ import annotations

import logging
from abc import ABC, abstractmethod
from dataclasses import dataclass
from datetime import datetime
from typing import TYPE_CHECKING, Any, Mapping, Sequence
from warnings import warn

from typing_extensions import TypeAlias

from .credentials import Credentials as _Credentials
from .device_type import DeviceType
from .deviceconfig import (
    DeviceConfig,
    DeviceConnectionParameters,
    DeviceEncryptionType,
    DeviceFamily,
)
from .emeterstatus import EmeterStatus
from .exceptions import KasaException
from .feature import Feature
from .iotprotocol import IotProtocol
from .module import Module
from .protocol import BaseProtocol
from .xortransport import XorTransport

if TYPE_CHECKING:
    from .modulemapping import ModuleMapping, ModuleName


@dataclass
class WifiNetwork:
    """Wifi network container."""

    ssid: str
    key_type: int
    # These are available only on softaponboarding
    cipher_type: int | None = None
    bssid: str | None = None
    channel: int | None = None
    rssi: int | None = None

    # For SMART devices
    signal_level: int | None = None


_LOGGER = logging.getLogger(__name__)


class Device(ABC):
    """Common device interface.

    Do not instantiate this class directly, instead get a device instance from
    :func:`Device.connect()`, :func:`Discover.discover()`
    or :func:`Discover.discover_single()`.
    """

    # All types required to create devices directly via connect are aliased here
    # to avoid consumers having to do multiple imports.

    #: The type of device
    Type: TypeAlias = DeviceType
    #: The credentials for authentication
    Credentials: TypeAlias = _Credentials
    #: Configuration for connecting to the device
    Config: TypeAlias = DeviceConfig
    #: The family of the device, e.g. SMART.KASASWITCH.
    Family: TypeAlias = DeviceFamily
    #: The encryption for the device, e.g. Klap or Aes
    EncryptionType: TypeAlias = DeviceEncryptionType
    #: The connection type for the device.
    ConnectionParameters: TypeAlias = DeviceConnectionParameters

    def __init__(
        self,
        host: str,
        *,
        config: DeviceConfig | None = None,
        protocol: BaseProtocol | None = None,
    ) -> None:
        """Create a new Device instance.

        :param str host: host name or IP address of the device
        :param DeviceConfig config: device configuration
        :param BaseProtocol protocol: protocol for communicating with the device
        """
        if config and protocol:
            protocol._transport._config = config
        self.protocol: BaseProtocol = protocol or IotProtocol(
            transport=XorTransport(config=config or DeviceConfig(host=host)),
        )
        _LOGGER.debug("Initializing %s of type %s", self.host, type(self))
        self._device_type = DeviceType.Unknown
        # TODO: typing Any is just as using Optional[Dict] would require separate
        #       checks in accessors. the @updated_required decorator does not ensure
        #       mypy that these are not accessed incorrectly.
        self._last_update: Any = None
        self._discovery_info: dict[str, Any] | None = None

        self._features: dict[str, Feature] = {}
        self._parent: Device | None = None
        self._children: Mapping[str, Device] = {}

    @staticmethod
    async def connect(
        *,
        host: str | None = None,
        config: DeviceConfig | None = None,
    ) -> Device:
        """Connect to a single device by the given hostname or device configuration.

        This method avoids the UDP based discovery process and
        will connect directly to the device.

        It is generally preferred to avoid :func:`discover_single()` and
        use this function instead as it should perform better when
        the WiFi network is congested or the device is not responding
        to discovery requests.

        :param host: Hostname of device to query
        :param config: Connection parameters to ensure the correct protocol
            and connection options are used.
        :rtype: SmartDevice
        :return: Object for querying/controlling found device.
        """
        from .device_factory import connect  # pylint: disable=import-outside-toplevel

        return await connect(host=host, config=config)  # type: ignore[arg-type]

    @abstractmethod
    async def update(self, update_children: bool = True):
        """Update the device."""

    async def disconnect(self):
        """Disconnect and close any underlying connection resources."""
        await self.protocol.close()

    @property
    @abstractmethod
    def modules(self) -> ModuleMapping[Module]:
        """Return the device modules."""

    @property
    @abstractmethod
    def is_on(self) -> bool:
        """Return true if the device is on."""

    @property
    def is_off(self) -> bool:
        """Return True if device is off."""
        return not self.is_on

    @abstractmethod
    async def turn_on(self, **kwargs) -> dict | None:
        """Turn on the device."""

    @abstractmethod
    async def turn_off(self, **kwargs) -> dict | None:
        """Turn off the device."""

    @abstractmethod
    async def set_state(self, on: bool):
        """Set the device state to *on*.

        This allows turning the device on and off.
        See also *turn_off* and *turn_on*.
        """

    @property
    def host(self) -> str:
        """The device host."""
        return self.protocol._transport._host

    @host.setter
    def host(self, value):
        """Set the device host.

        Generally used by discovery to set the hostname after ip discovery.
        """
        self.protocol._transport._host = value
        self.protocol._transport._config.host = value

    @property
    def port(self) -> int:
        """The device port."""
        return self.protocol._transport._port

    @property
    def credentials(self) -> _Credentials | None:
        """The device credentials."""
        return self.protocol._transport._credentials

    @property
    def credentials_hash(self) -> str | None:
        """The protocol specific hash of the credentials the device is using."""
        return self.protocol._transport.credentials_hash

    @property
    def device_type(self) -> DeviceType:
        """Return the device type."""
        return self._device_type

    @abstractmethod
    def update_from_discover_info(self, info):
        """Update state from info from the discover call."""

    @property
    def config(self) -> DeviceConfig:
        """Return the device configuration."""
        return self.protocol.config

    @property
    @abstractmethod
    def model(self) -> str:
        """Returns the device model."""

    @property
    @abstractmethod
    def alias(self) -> str | None:
        """Returns the device alias or nickname."""

    async def _raw_query(self, request: str | dict) -> Any:
        """Send a raw query to the device."""
        return await self.protocol.query(request=request)

    @property
    def children(self) -> Sequence[Device]:
        """Returns the child devices."""
        return list(self._children.values())

    def get_child_device(self, id_: str) -> Device:
        """Return child device by its ID."""
        return self._children[id_]

    @property
    @abstractmethod
    def sys_info(self) -> dict[str, Any]:
        """Returns the device info."""

    def get_plug_by_name(self, name: str) -> Device:
        """Return child device for the given name."""
        for p in self.children:
            if p.alias == name:
                return p

        raise KasaException(f"Device has no child with {name}")

    def get_plug_by_index(self, index: int) -> Device:
        """Return child device for the given index."""
        if index + 1 > len(self.children) or index < 0:
            raise KasaException(
                f"Invalid index {index}, device has {len(self.children)} plugs"
            )
        return self.children[index]

    @property
    @abstractmethod
    def time(self) -> datetime:
        """Return the time."""

    @property
    @abstractmethod
    def timezone(self) -> dict:
        """Return the timezone and time_difference."""

    @property
    @abstractmethod
    def hw_info(self) -> dict:
        """Return hardware info for the device."""

    @property
    @abstractmethod
    def location(self) -> dict:
        """Return the device location."""

    @property
    @abstractmethod
    def rssi(self) -> int | None:
        """Return the rssi."""

    @property
    @abstractmethod
    def mac(self) -> str:
        """Return the mac formatted with colons."""

    @property
    @abstractmethod
    def device_id(self) -> str:
        """Return the device id."""

    @property
    @abstractmethod
    def internal_state(self) -> Any:
        """Return all the internal state data."""

    @property
    def state_information(self) -> dict[str, Any]:
        """Return available features and their values."""
        return {feat.name: feat.value for feat in self._features.values()}

    @property
    def features(self) -> dict[str, Feature]:
        """Return the list of supported features."""
        return self._features

    def _add_feature(self, feature: Feature):
        """Add a new feature to the device."""
        if feature.id in self._features:
            raise KasaException("Duplicate feature id %s" % feature.id)
        assert feature.id is not None  # TODO: hack for typing # noqa: S101
        self._features[feature.id] = feature

    @property
    @abstractmethod
    def has_emeter(self) -> bool:
        """Return if the device has emeter."""

    @property
    @abstractmethod
    def on_since(self) -> datetime | None:
        """Return the time that the device was turned on or None if turned off."""

    @abstractmethod
    async def get_emeter_realtime(self) -> EmeterStatus:
        """Retrieve current energy readings."""

    @property
    @abstractmethod
    def emeter_realtime(self) -> EmeterStatus:
        """Get the emeter status."""

    @property
    @abstractmethod
    def emeter_this_month(self) -> float | None:
        """Get the emeter value for this month."""

    @property
    @abstractmethod
    def emeter_today(self) -> float | None | Any:
        """Get the emeter value for today."""
        # Return type of Any ensures consumers being shielded from the return
        # type by @update_required are not affected.

    @abstractmethod
    async def wifi_scan(self) -> list[WifiNetwork]:
        """Scan for available wifi networks."""

    @abstractmethod
    async def wifi_join(self, ssid: str, password: str, keytype: str = "wpa2_psk"):
        """Join the given wifi network."""

    @abstractmethod
    async def set_alias(self, alias: str):
        """Set the device name (alias)."""

    def __repr__(self):
        if self._last_update is None:
            return f"<{self.device_type} at {self.host} - update() needed>"
        return f"<{self.device_type} at {self.host} - {self.alias} ({self.model})>"

    _deprecated_device_type_attributes = {
        # is_type
        "is_bulb": (Module.Light, DeviceType.Bulb),
        "is_dimmer": (Module.Light, DeviceType.Dimmer),
        "is_light_strip": (Module.LightEffect, DeviceType.LightStrip),
        "is_plug": (Module.Led, DeviceType.Plug),
        "is_wallswitch": (Module.Led, DeviceType.WallSwitch),
        "is_strip": (None, DeviceType.Strip),
        "is_strip_socket": (None, DeviceType.StripSocket),
    }

    def _get_replacing_attr(self, module_name: ModuleName, *attrs):
        if module_name not in self.modules:
            return None

        for attr in attrs:
            if hasattr(self.modules[module_name], attr):
                return getattr(self.modules[module_name], attr)

        return None

    _deprecated_other_attributes = {
        # light attributes
        "is_color": (Module.Light, ["is_color"]),
        "is_dimmable": (Module.Light, ["is_dimmable"]),
        "is_variable_color_temp": (Module.Light, ["is_variable_color_temp"]),
        "brightness": (Module.Light, ["brightness"]),
        "set_brightness": (Module.Light, ["set_brightness"]),
        "hsv": (Module.Light, ["hsv"]),
        "set_hsv": (Module.Light, ["set_hsv"]),
        "color_temp": (Module.Light, ["color_temp"]),
        "set_color_temp": (Module.Light, ["set_color_temp"]),
        "valid_temperature_range": (Module.Light, ["valid_temperature_range"]),
        "has_effects": (Module.Light, ["has_effects"]),
        "_deprecated_set_light_state": (Module.Light, ["has_effects"]),
        # led attributes
        "led": (Module.Led, ["led"]),
        "set_led": (Module.Led, ["set_led"]),
        # light effect attributes
        # The return values for effect is a str instead of dict so the lightstrip
        # modules have a _deprecated method to return the value as before.
        "effect": (Module.LightEffect, ["_deprecated_effect", "effect"]),
        # The return values for effect_list includes the Off effect so the lightstrip
        # modules have a _deprecated method to return the values as before.
        "effect_list": (Module.LightEffect, ["_deprecated_effect_list", "effect_list"]),
        "set_effect": (Module.LightEffect, ["set_effect"]),
        "set_custom_effect": (Module.LightEffect, ["set_custom_effect"]),
        # light preset attributes
        "presets": (Module.LightPreset, ["_deprecated_presets", "preset_states_list"]),
        "save_preset": (Module.LightPreset, ["_deprecated_save_preset"]),
    }

    def __getattr__(self, name):
        # is_device_type
        if dep_device_type_attr := self._deprecated_device_type_attributes.get(name):
            module = dep_device_type_attr[0]
            msg = f"{name} is deprecated"
            if module:
                msg += f", use: {module} in device.modules instead"
            warn(msg, DeprecationWarning, stacklevel=1)
            return self.device_type == dep_device_type_attr[1]
        # Other deprecated attributes
        if (dep_attr := self._deprecated_other_attributes.get(name)) and (
            (replacing_attr := self._get_replacing_attr(dep_attr[0], *dep_attr[1]))
            is not None
        ):
            module_name = dep_attr[0]
            msg = (
                f"{name} is deprecated, use: "
                + f"Module.{module_name} in device.modules instead"
            )
            warn(msg, DeprecationWarning, stacklevel=1)
            return replacing_attr
        raise AttributeError(f"Device has no attribute {name!r}")