"""Component to integrate the Home Assistant cloud."""
from hass_nabucasa import Cloud
import voluptuous as vol

from homeassistant.components.alexa import const as alexa_const
from homeassistant.components.google_assistant import const as ga_c
from homeassistant.const import (
    CONF_DESCRIPTION,
    CONF_MODE,
    CONF_NAME,
    CONF_REGION,
    EVENT_HOMEASSISTANT_STOP,
)
from homeassistant.core import callback
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers import config_validation as cv, entityfilter
from homeassistant.loader import bind_hass
from homeassistant.util.aiohttp import MockRequest

from . import account_link, http_api
from .client import CloudClient
from .const import (
    CONF_ACCOUNT_LINK_URL,
    CONF_ACME_DIRECTORY_SERVER,
    CONF_ALEXA,
    CONF_ALEXA_ACCESS_TOKEN_URL,
    CONF_ALIASES,
    CONF_CLOUDHOOK_CREATE_URL,
    CONF_COGNITO_CLIENT_ID,
    CONF_ENTITY_CONFIG,
    CONF_FILTER,
    CONF_GOOGLE_ACTIONS,
    CONF_GOOGLE_ACTIONS_REPORT_STATE_URL,
    CONF_RELAYER,
    CONF_REMOTE_API_URL,
    CONF_SUBSCRIPTION_INFO_URL,
    CONF_USER_POOL_ID,
    CONF_VOICE_API_URL,
    DOMAIN,
    MODE_DEV,
    MODE_PROD,
)
from .prefs import CloudPreferences

DEFAULT_MODE = MODE_PROD

SERVICE_REMOTE_CONNECT = "remote_connect"
SERVICE_REMOTE_DISCONNECT = "remote_disconnect"


ALEXA_ENTITY_SCHEMA = vol.Schema(
    {
        vol.Optional(CONF_DESCRIPTION): cv.string,
        vol.Optional(alexa_const.CONF_DISPLAY_CATEGORIES): cv.string,
        vol.Optional(CONF_NAME): cv.string,
    }
)

GOOGLE_ENTITY_SCHEMA = vol.Schema(
    {
        vol.Optional(CONF_NAME): cv.string,
        vol.Optional(CONF_ALIASES): vol.All(cv.ensure_list, [cv.string]),
        vol.Optional(ga_c.CONF_ROOM_HINT): cv.string,
    }
)

ASSISTANT_SCHEMA = vol.Schema(
    {vol.Optional(CONF_FILTER, default=dict): entityfilter.FILTER_SCHEMA}
)

ALEXA_SCHEMA = ASSISTANT_SCHEMA.extend(
    {vol.Optional(CONF_ENTITY_CONFIG): {cv.entity_id: ALEXA_ENTITY_SCHEMA}}
)

GACTIONS_SCHEMA = ASSISTANT_SCHEMA.extend(
    {vol.Optional(CONF_ENTITY_CONFIG): {cv.entity_id: GOOGLE_ENTITY_SCHEMA}}
)

# pylint: disable=no-value-for-parameter
CONFIG_SCHEMA = vol.Schema(
    {
        DOMAIN: vol.Schema(
            {
                vol.Optional(CONF_MODE, default=DEFAULT_MODE): vol.In(
                    [MODE_DEV, MODE_PROD]
                ),
                vol.Optional(CONF_COGNITO_CLIENT_ID): str,
                vol.Optional(CONF_USER_POOL_ID): str,
                vol.Optional(CONF_REGION): str,
                vol.Optional(CONF_RELAYER): str,
                vol.Optional(CONF_SUBSCRIPTION_INFO_URL): vol.Url(),
                vol.Optional(CONF_CLOUDHOOK_CREATE_URL): vol.Url(),
                vol.Optional(CONF_REMOTE_API_URL): vol.Url(),
                vol.Optional(CONF_ACME_DIRECTORY_SERVER): vol.Url(),
                vol.Optional(CONF_ALEXA): ALEXA_SCHEMA,
                vol.Optional(CONF_GOOGLE_ACTIONS): GACTIONS_SCHEMA,
                vol.Optional(CONF_ALEXA_ACCESS_TOKEN_URL): vol.Url(),
                vol.Optional(CONF_GOOGLE_ACTIONS_REPORT_STATE_URL): vol.Url(),
                vol.Optional(CONF_ACCOUNT_LINK_URL): vol.Url(),
                vol.Optional(CONF_VOICE_API_URL): vol.Url(),
            }
        )
    },
    extra=vol.ALLOW_EXTRA,
)


class CloudNotAvailable(HomeAssistantError):
    """Raised when an action requires the cloud but it's not available."""


@bind_hass
@callback
def async_is_logged_in(hass) -> bool:
    """Test if user is logged in."""
    return DOMAIN in hass.data and hass.data[DOMAIN].is_logged_in


@bind_hass
@callback
def async_active_subscription(hass) -> bool:
    """Test if user has an active subscription."""
    return async_is_logged_in(hass) and not hass.data[DOMAIN].subscription_expired


@bind_hass
async def async_create_cloudhook(hass, webhook_id: str) -> str:
    """Create a cloudhook."""
    if not async_is_logged_in(hass):
        raise CloudNotAvailable

    hook = await hass.data[DOMAIN].cloudhooks.async_create(webhook_id, True)
    return hook["cloudhook_url"]


@bind_hass
async def async_delete_cloudhook(hass, webhook_id: str) -> None:
    """Delete a cloudhook."""
    if DOMAIN not in hass.data:
        raise CloudNotAvailable

    await hass.data[DOMAIN].cloudhooks.async_delete(webhook_id)


@bind_hass
@callback
def async_remote_ui_url(hass) -> str:
    """Get the remote UI URL."""
    if not async_is_logged_in(hass):
        raise CloudNotAvailable

    if not hass.data[DOMAIN].client.prefs.remote_enabled:
        raise CloudNotAvailable

    if not hass.data[DOMAIN].remote.instance_domain:
        raise CloudNotAvailable

    return f"https://{hass.data[DOMAIN].remote.instance_domain}"


def is_cloudhook_request(request):
    """Test if a request came from a cloudhook.

    Async friendly.
    """
    return isinstance(request, MockRequest)


async def async_setup(hass, config):
    """Initialize the Home Assistant cloud."""
    # Process configs
    if DOMAIN in config:
        kwargs = dict(config[DOMAIN])
    else:
        kwargs = {CONF_MODE: DEFAULT_MODE}

    # Alexa/Google custom config
    alexa_conf = kwargs.pop(CONF_ALEXA, None) or ALEXA_SCHEMA({})
    google_conf = kwargs.pop(CONF_GOOGLE_ACTIONS, None) or GACTIONS_SCHEMA({})

    # Cloud settings
    prefs = CloudPreferences(hass)
    await prefs.async_initialize()

    # Initialize Cloud
    websession = hass.helpers.aiohttp_client.async_get_clientsession()
    client = CloudClient(hass, prefs, websession, alexa_conf, google_conf)
    cloud = hass.data[DOMAIN] = Cloud(client, **kwargs)

    async def _shutdown(event):
        """Shutdown event."""
        await cloud.stop()

    hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, _shutdown)

    async def _service_handler(service):
        """Handle service for cloud."""
        if service.service == SERVICE_REMOTE_CONNECT:
            await cloud.remote.connect()
            await prefs.async_update(remote_enabled=True)
        elif service.service == SERVICE_REMOTE_DISCONNECT:
            await cloud.remote.disconnect()
            await prefs.async_update(remote_enabled=False)

    hass.helpers.service.async_register_admin_service(
        DOMAIN, SERVICE_REMOTE_CONNECT, _service_handler
    )
    hass.helpers.service.async_register_admin_service(
        DOMAIN, SERVICE_REMOTE_DISCONNECT, _service_handler
    )

    loaded = False

    async def _on_connect():
        """Discover RemoteUI binary sensor."""
        nonlocal loaded

        # Prevent multiple discovery
        if loaded:
            return
        loaded = True

        await hass.helpers.discovery.async_load_platform(
            "binary_sensor", DOMAIN, {}, config
        )
        await hass.helpers.discovery.async_load_platform("stt", DOMAIN, {}, config)
        await hass.helpers.discovery.async_load_platform("tts", DOMAIN, {}, config)

    cloud.iot.register_on_connect(_on_connect)

    await cloud.start()
    await http_api.async_setup(hass)

    account_link.async_setup(hass)

    return True
