"""Support for Tahoma devices."""
from collections import defaultdict
import logging

from requests.exceptions import RequestException
from tahoma_api import Action, TahomaApi
import voluptuous as vol

from homeassistant.const import CONF_EXCLUDE, CONF_PASSWORD, CONF_USERNAME
from homeassistant.helpers import config_validation as cv, discovery
from homeassistant.helpers.entity import Entity

_LOGGER = logging.getLogger(__name__)

DOMAIN = "tahoma"

TAHOMA_ID_FORMAT = "{}_{}"

CONFIG_SCHEMA = vol.Schema(
    {
        DOMAIN: vol.Schema(
            {
                vol.Required(CONF_USERNAME): cv.string,
                vol.Required(CONF_PASSWORD): cv.string,
                vol.Optional(CONF_EXCLUDE, default=[]): vol.All(
                    cv.ensure_list, [cv.string]
                ),
            }
        )
    },
    extra=vol.ALLOW_EXTRA,
)

TAHOMA_COMPONENTS = ["scene", "sensor", "cover", "switch", "binary_sensor"]

TAHOMA_TYPES = {
    "io:ExteriorVenetianBlindIOComponent": "cover",
    "io:HorizontalAwningIOComponent": "cover",
    "io:LightIOSystemSensor": "sensor",
    "io:OnOffIOComponent": "switch",
    "io:OnOffLightIOComponent": "switch",
    "io:RollerShutterGenericIOComponent": "cover",
    "io:RollerShutterUnoIOComponent": "cover",
    "io:RollerShutterVeluxIOComponent": "cover",
    "io:RollerShutterWithLowSpeedManagementIOComponent": "cover",
    "io:SomfyBasicContactIOSystemSensor": "sensor",
    "io:SomfyContactIOSystemSensor": "sensor",
    "io:VerticalExteriorAwningIOComponent": "cover",
    "io:WindowOpenerVeluxIOComponent": "cover",
    "io:GarageOpenerIOComponent": "cover",
    "io:DiscreteGarageOpenerIOComponent": "cover",
    "rtds:RTDSContactSensor": "sensor",
    "rtds:RTDSMotionSensor": "sensor",
    "rtds:RTDSSmokeSensor": "smoke",
    "rts:BlindRTSComponent": "cover",
    "rts:CurtainRTSComponent": "cover",
    "rts:DualCurtainRTSComponent": "cover",
    "rts:ExteriorVenetianBlindRTSComponent": "cover",
    "rts:GarageDoor4TRTSComponent": "switch",
    "rts:RollerShutterRTSComponent": "cover",
    "rts:VenetianBlindRTSComponent": "cover",
}


def setup(hass, config):
    """Activate Tahoma component."""

    conf = config[DOMAIN]
    username = conf.get(CONF_USERNAME)
    password = conf.get(CONF_PASSWORD)
    exclude = conf.get(CONF_EXCLUDE)
    try:
        api = TahomaApi(username, password)
    except RequestException:
        _LOGGER.exception("Error when trying to log in to the Tahoma API")
        return False

    try:
        api.get_setup()
        devices = api.get_devices()
        scenes = api.get_action_groups()
    except RequestException:
        _LOGGER.exception("Error when getting devices from the Tahoma API")
        return False

    hass.data[DOMAIN] = {"controller": api, "devices": defaultdict(list), "scenes": []}

    for device in devices:
        _device = api.get_device(device)
        if all(ext not in _device.type for ext in exclude):
            device_type = map_tahoma_device(_device)
            if device_type is None:
                _LOGGER.warning(
                    "Unsupported type %s for Tahoma device %s",
                    _device.type,
                    _device.label,
                )
                continue
            hass.data[DOMAIN]["devices"][device_type].append(_device)

    for scene in scenes:
        hass.data[DOMAIN]["scenes"].append(scene)

    for component in TAHOMA_COMPONENTS:
        discovery.load_platform(hass, component, DOMAIN, {}, config)

    return True


def map_tahoma_device(tahoma_device):
    """Map Tahoma device types to Home Assistant components."""
    return TAHOMA_TYPES.get(tahoma_device.type)


class TahomaDevice(Entity):
    """Representation of a Tahoma device entity."""

    def __init__(self, tahoma_device, controller):
        """Initialize the device."""
        self.tahoma_device = tahoma_device
        self.controller = controller
        self._name = self.tahoma_device.label

    @property
    def name(self):
        """Return the name of the device."""
        return self._name

    @property
    def device_state_attributes(self):
        """Return the state attributes of the device."""
        return {"tahoma_device_id": self.tahoma_device.url}

    def apply_action(self, cmd_name, *args):
        """Apply Action to Device."""

        action = Action(self.tahoma_device.url)
        action.add_command(cmd_name, *args)
        self.controller.apply_actions("HomeAssistant", [action])
