"""A platform which allows you to get information from Tautulli."""
from datetime import timedelta
import logging

from pytautulli import Tautulli
import voluptuous as vol

from homeassistant.components.sensor import PLATFORM_SCHEMA
from homeassistant.const import (
    CONF_API_KEY,
    CONF_HOST,
    CONF_MONITORED_CONDITIONS,
    CONF_NAME,
    CONF_PATH,
    CONF_PORT,
    CONF_SSL,
    CONF_VERIFY_SSL,
)
from homeassistant.exceptions import PlatformNotReady
from homeassistant.helpers.aiohttp_client import async_get_clientsession
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.entity import Entity
from homeassistant.util import Throttle

_LOGGER = logging.getLogger(__name__)

CONF_MONITORED_USERS = "monitored_users"

DEFAULT_NAME = "Tautulli"
DEFAULT_PORT = "8181"
DEFAULT_PATH = ""
DEFAULT_SSL = False
DEFAULT_VERIFY_SSL = True

TIME_BETWEEN_UPDATES = timedelta(seconds=10)

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
    {
        vol.Required(CONF_API_KEY): cv.string,
        vol.Required(CONF_HOST): cv.string,
        vol.Optional(CONF_MONITORED_CONDITIONS): vol.All(cv.ensure_list, [cv.string]),
        vol.Optional(CONF_MONITORED_USERS): vol.All(cv.ensure_list, [cv.string]),
        vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
        vol.Optional(CONF_PORT, default=DEFAULT_PORT): cv.string,
        vol.Optional(CONF_PATH, default=DEFAULT_PATH): cv.string,
        vol.Optional(CONF_SSL, default=DEFAULT_SSL): cv.boolean,
        vol.Optional(CONF_VERIFY_SSL, default=DEFAULT_VERIFY_SSL): cv.boolean,
    }
)


async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
    """Create the Tautulli sensor."""

    name = config.get(CONF_NAME)
    host = config[CONF_HOST]
    port = config.get(CONF_PORT)
    path = config.get(CONF_PATH)
    api_key = config[CONF_API_KEY]
    monitored_conditions = config.get(CONF_MONITORED_CONDITIONS)
    user = config.get(CONF_MONITORED_USERS)
    use_ssl = config[CONF_SSL]
    verify_ssl = config.get(CONF_VERIFY_SSL)

    session = async_get_clientsession(hass, verify_ssl)
    tautulli = TautulliData(
        Tautulli(host, port, api_key, hass.loop, session, use_ssl, path)
    )

    if not await tautulli.test_connection():
        raise PlatformNotReady

    sensor = [TautulliSensor(tautulli, name, monitored_conditions, user)]

    async_add_entities(sensor, True)


class TautulliSensor(Entity):
    """Representation of a Tautulli sensor."""

    def __init__(self, tautulli, name, monitored_conditions, users):
        """Initialize the Tautulli sensor."""
        self.tautulli = tautulli
        self.monitored_conditions = monitored_conditions
        self.usernames = users
        self.sessions = {}
        self.home = {}
        self._attributes = {}
        self._name = name
        self._state = None

    async def async_update(self):
        """Get the latest data from the Tautulli API."""
        await self.tautulli.async_update()
        self.home = self.tautulli.api.home_data
        self.sessions = self.tautulli.api.session_data
        self._attributes["Top Movie"] = self.home.get("movie")
        self._attributes["Top TV Show"] = self.home.get("tv")
        self._attributes["Top User"] = self.home.get("user")
        for key in self.sessions:
            if "sessions" not in key:
                self._attributes[key] = self.sessions[key]
        for user in self.tautulli.api.users:
            if self.usernames is None or user in self.usernames:
                userdata = self.tautulli.api.user_data
                self._attributes[user] = {}
                self._attributes[user]["Activity"] = userdata[user]["Activity"]
                if self.monitored_conditions:
                    for key in self.monitored_conditions:
                        try:
                            self._attributes[user][key] = userdata[user][key]
                        except (KeyError, TypeError):
                            self._attributes[user][key] = ""

    @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.sessions.get("stream_count")

    @property
    def icon(self):
        """Return the icon of the sensor."""
        return "mdi:plex"

    @property
    def unit_of_measurement(self):
        """Return the unit this state is expressed in."""
        return "Watching"

    @property
    def device_state_attributes(self):
        """Return attributes for the sensor."""
        return self._attributes


class TautulliData:
    """Get the latest data and update the states."""

    def __init__(self, api):
        """Initialize the data object."""
        self.api = api

    @Throttle(TIME_BETWEEN_UPDATES)
    async def async_update(self):
        """Get the latest data from Tautulli."""
        await self.api.get_data()

    async def test_connection(self):
        """Test connection to Tautulli."""
        await self.api.test_connection()
        connection_status = self.api.connection
        return connection_status
