"""
Support for LG TV from 2011
"""

from datetime import timedelta
import logging

from requests import RequestException
import voluptuous as vol

from homeassistant import util
from homeassistant.components.media_player import PLATFORM_SCHEMA, MediaPlayerEntity
from homeassistant.components.media_player.const import (
    MEDIA_TYPE_CHANNEL,
    SUPPORT_NEXT_TRACK,
    SUPPORT_PAUSE,
    SUPPORT_PLAY,
    SUPPORT_PREVIOUS_TRACK,
    SUPPORT_SELECT_SOURCE,
    SUPPORT_TURN_OFF,
    SUPPORT_VOLUME_MUTE,
    SUPPORT_VOLUME_STEP,
)
from homeassistant.const import (
    CONF_ACCESS_TOKEN,
    CONF_HOST,
    CONF_NAME,
    STATE_OFF,
    STATE_PAUSED,
    STATE_PLAYING,
    STATE_UNKNOWN,
)
import homeassistant.helpers.config_validation as cv

_LOGGER = logging.getLogger(__name__)

DEFAULT_NAME = 'LG TV Remote'

MIN_TIME_BETWEEN_FORCED_SCANS = timedelta(seconds=1)
MIN_TIME_BETWEEN_SCANS = timedelta(seconds=10)

SUPPORT_LGTV = SUPPORT_PAUSE | SUPPORT_VOLUME_STEP | \
               SUPPORT_VOLUME_MUTE | SUPPORT_TURN_OFF | \
               SUPPORT_SELECT_SOURCE | SUPPORT_PLAY

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
    vol.Required(CONF_HOST): cv.string,
    vol.Optional(CONF_ACCESS_TOKEN): vol.All(cv.string, vol.Length(max=6)),
    vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
})


def setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up the LG TV platform."""

    host = config.get(CONF_HOST)
    access_token = config.get(CONF_ACCESS_TOKEN)
    name = config.get(CONF_NAME)


    add_entities([LgTVDevice(host, access_token, name)], True)


class LgTVDevice(MediaPlayerEntity):
    """Representation of a LG TV."""

    def __init__(self, host, access_token, name):
        """Initialize the LG TV device."""
        self._client = None
        self._host = host
        self._access_token = access_token
        self._name = name
        self._muted = False
        # Assume that the TV is in Play mode
        self._playing = True
        self._state = STATE_PLAYING
        self._volume = 0
        self._source = STATE_UNKNOWN
        self._sources = { "Antenna" : "ANTENNA", "USB1" : "USB1", "USB2" : "USB2", "HDMI1" : "HDMI1", "HDMI2" : "HDMI2", "HDMI3" : "HDMI3", "HDMI4" : "HDMI4", "AV1" : "AV1", "AV2" : "AV2", "AV3" : "AV3", "Component" : "COMPONENT" }
        self.reconnect()

    def reconnect(self):
        from python_lgtv import lg
        try:
            self._client = lg.Remote(self._host, self._access_token)
            self._state = STATE_PLAYING
        except Exception as e:
            pass

    def send_command(self, command):
        """Send remote control commands to the TV."""
        try:
            self._client.send_command(command)
        except Exception as e:
            self._state = STATE_OFF
            self.reconnect()

    @util.Throttle(MIN_TIME_BETWEEN_SCANS, MIN_TIME_BETWEEN_FORCED_SCANS)
    def update(self):
        """Retrieve the latest data from the LG TV."""
        try:
            self._client.get_session()
            self._client.send_command(command)
        except Exception as e:
            self.reconnect()
            #self._state = STATE_OFF

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

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

    @property
    def is_volume_muted(self):
        """Boolean if volume is currently muted."""
        return self._muted

    @property
    def volume_level(self):
        """Volume level of the media player (0..1)."""
        return self._volume / 100.0

    @property
    def source(self):
        """Return the current input source."""
        return self._source

    @property
    def source_list(self):
        """List of available input sources."""
        return list(self._sources.keys())

    @property
    def supported_features(self):
        """Flag media player features that are supported."""
        return SUPPORT_LGTV

    def turn_off(self):
        """Turn off media player."""
        #self.send_command(1)
        pass

    def volume_up(self):
        """Volume up the media player."""
        self.send_command(self._client.audio_controls["VOLUME_UP"])

    def volume_down(self):
        """Volume down media player."""
        self.send_command(self._client.audio_controls["VOLUME_DOWN"])

    def mute_volume(self, mute):
        """Send mute command."""
        self.send_command(self._client.audio_controls["MUTE"])

    def select_source(self, source):
        """Select input source."""
        self._source = source
        self.send_command(self._client.input_controls[source])

    def media_play_pause(self):
        """Simulate play pause media player."""
        if self._playing:
            self.media_pause()
        else:
            self.media_play()

    def media_play(self):
        """Send play command."""
        self._playing = True
        self._state = STATE_PLAYING
        self.send_command(self._client.playback_controls["PLAY"])

    def media_pause(self):
        """Send media pause command to media player."""
        self._playing = False
        self._state = STATE_PAUSED
        self.send_command(self._client.playback_controls["PAUSE"])