"""Support for Logi Circle sensors."""
import logging

from homeassistant.const import (
    ATTR_ATTRIBUTION, ATTR_BATTERY_CHARGING, CONF_MONITORED_CONDITIONS,
    CONF_SENSORS, STATE_OFF, STATE_ON)
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.icon import icon_for_battery_level
from homeassistant.util.dt import as_local

from .const import (
    ATTRIBUTION, DOMAIN as LOGI_CIRCLE_DOMAIN, LOGI_SENSORS as SENSOR_TYPES)

_LOGGER = logging.getLogger(__name__)


async def async_setup_platform(
        hass, config, async_add_entities, discovery_info=None):
    """Set up a sensor for a Logi Circle device. Obsolete."""
    _LOGGER.warning(
        'Logi Circle no longer works with sensor platform configuration')


async def async_setup_entry(hass, entry, async_add_entities):
    """Set up a Logi Circle sensor based on a config entry."""
    devices = await hass.data[LOGI_CIRCLE_DOMAIN].cameras
    time_zone = str(hass.config.time_zone)

    sensors = []
    for sensor_type in (entry.data.get(CONF_SENSORS)
                        .get(CONF_MONITORED_CONDITIONS)):
        for device in devices:
            if device.supports_feature(sensor_type):
                sensors.append(LogiSensor(device, time_zone, sensor_type))

    async_add_entities(sensors, True)


class LogiSensor(Entity):
    """A sensor implementation for a Logi Circle camera."""

    def __init__(self, camera, time_zone, sensor_type):
        """Initialize a sensor for Logi Circle camera."""
        self._sensor_type = sensor_type
        self._camera = camera
        self._id = '{}-{}'.format(self._camera.mac_address, self._sensor_type)
        self._icon = 'mdi:{}'.format(SENSOR_TYPES.get(self._sensor_type)[2])
        self._name = "{0} {1}".format(
            self._camera.name, SENSOR_TYPES.get(self._sensor_type)[0])
        self._activity = {}
        self._state = None
        self._tz = time_zone

    @property
    def unique_id(self):
        """Return a unique ID."""
        return self._id

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

    @property
    def state(self):
        """Return the state of the sensor."""
        return self._state

    @property
    def device_state_attributes(self):
        """Return the state attributes."""
        state = {
            ATTR_ATTRIBUTION: ATTRIBUTION,
            'battery_saving_mode': (
                STATE_ON if self._camera.battery_saving else STATE_OFF),
            'microphone_gain': self._camera.microphone_gain
        }

        if self._sensor_type == 'battery_level':
            state[ATTR_BATTERY_CHARGING] = self._camera.charging

        return state

    @property
    def icon(self):
        """Icon to use in the frontend, if any."""
        if (self._sensor_type == 'battery_level' and
                self._state is not None):
            return icon_for_battery_level(battery_level=int(self._state),
                                          charging=False)
        if (self._sensor_type == 'recording_mode' and
                self._state is not None):
            return 'mdi:eye' if self._state == STATE_ON else 'mdi:eye-off'
        if (self._sensor_type == 'streaming_mode' and
                self._state is not None):
            return (
                'mdi:camera' if self._state == STATE_ON else 'mdi:camera-off')
        return self._icon

    @property
    def unit_of_measurement(self):
        """Return the units of measurement."""
        return SENSOR_TYPES.get(self._sensor_type)[1]

    async def async_update(self):
        """Get the latest data and updates the state."""
        _LOGGER.debug("Pulling data from %s sensor", self._name)
        await self._camera.update()

        if self._sensor_type == 'last_activity_time':
            last_activity = (await self._camera.
                             get_last_activity(force_refresh=True))
            if last_activity is not None:
                last_activity_time = as_local(last_activity.end_time_utc)
                self._state = '{0:0>2}:{1:0>2}'.format(
                    last_activity_time.hour, last_activity_time.minute)
        else:
            state = getattr(self._camera, self._sensor_type, None)
            if isinstance(state, bool):
                self._state = STATE_ON if state is True else STATE_OFF
            else:
                self._state = state
            self._state = state