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"""Airzone Cloud API."""
from __future__ import annotations
import asyncio
from asyncio import Event, Lock, Task
from datetime import datetime
from json import JSONDecodeError, loads as json_loads
import logging
from typing import TYPE_CHECKING, Any
import urllib.parse
from aiohttp import ClientSession, ClientWebSocketResponse, WSMessage, WSMsgType
from .const import (
API_DEVICE_ID,
API_V1,
API_WS_ID,
WS_ALIVE_PERIOD,
WS_AUTH,
WS_BODY,
WS_CORR_ID,
WS_DEVICE_STATE,
WS_DEVICE_STATE_END,
WS_DEVICES_UPDATES,
WS_EVENT,
WS_INSTALLATION,
WS_INSTALLATION_ID,
WS_URL,
WS_WEBSERVER_UPDATES,
WS_WEBSOCKETS,
)
from .device import Device
from .entity import EntityUpdate, UpdateType
from .installation import Installation
from .token import AirzoneCloudToken
if TYPE_CHECKING:
from .cloudapi import AirzoneCloudApi
_LOGGER = logging.getLogger(__name__)
class AirzoneCloudIWS:
"""Airzone Cloud Installation WebSockets."""
def __init__(
self,
cloudapi: AirzoneCloudApi,
installation: Installation,
):
"""Airzone Cloud WebSockets init."""
self.alive_dt: datetime | None = None
self.cloudapi: AirzoneCloudApi = cloudapi
self.device_data_lock = Lock()
self.device_data: dict[str, Any] = {}
self.inst_id: str = installation.get_id()
self.session: ClientSession = cloudapi.session or ClientSession()
self.state_end: Event = Event()
self.task: Task[None] | None = None
self.token: AirzoneCloudToken = cloudapi.token
async def _connect(self) -> None:
"""WebSockets connection."""
params = {
WS_INSTALLATION_ID: self.inst_id,
}
inst_params = urllib.parse.urlencode(params)
url = f"{WS_URL}/{API_V1}/{WS_WEBSOCKETS}/{WS_INSTALLATION}?{inst_params}"
await self.state_init()
async with self.session.ws_connect(
url,
headers=self.token.headers(),
autoclose=False,
autoping=False,
) as ws:
async for msg in ws:
await self.handler(ws, msg)
def connect(self) -> bool:
"""WebSockets task creation."""
if self.task is not None:
return self.is_connected()
self.state_end.clear()
self.task = asyncio.ensure_future(self._connect())
return True
def disconnect(self) -> bool:
"""WebSockets task deletion."""
self.state_end.clear()
task = self.task
if task is None:
return True
res = task.cancel()
self.task = None
return res
def reconnect(self) -> bool:
"""WebSockets reconnect."""
_LOGGER.warning("WS[%s]: reconnecting...", self.inst_id)
self.disconnect()
return self.connect()
def get_device_data(self, device: Device) -> dict[str, Any] | None:
"""Return WebSockets device data."""
return self.device_data.get(device.get_id())
async def handler_auth(
self, ws: ClientWebSocketResponse, data: dict[str, Any]
) -> None:
"""WebSockets AUTH handler."""
corr_id = data.get(WS_CORR_ID)
if corr_id is not None:
auth = {
WS_CORR_ID: corr_id,
WS_BODY: self.token.jwt(),
}
_LOGGER.debug("WS[%s]: AUTH[%s]", self.inst_id, corr_id)
await ws.send_json(auth)
else:
_LOGGER.error("WS[%s]: AUTH error -> %s", self.inst_id, data)
async def handler_close(self, ws: ClientWebSocketResponse) -> None:
"""WebSockets CLOSE handler."""
_LOGGER.debug("WS[%s]: CLOSE", self.inst_id)
await ws.close()
async def handler_device_state(self, data: dict[str, Any]) -> None:
"""WebSockets DEVICE_STATE handler."""
body: dict[str, Any] = data.get(WS_BODY, {})
update = EntityUpdate(UpdateType.WS_FULL, body)
dev_id: str | None = body.get(API_DEVICE_ID)
_LOGGER.debug("WS[%s]: DEVICE_STATE[%s]", self.inst_id, dev_id)
device = self.cloudapi.get_device_id(dev_id)
if device is not None:
async with self.device_data_lock:
self.device_data[device.get_id()] = body
await device.update(update)
def handler_device_state_end(self, data: dict[str, Any]) -> None:
"""WebSockets DEVICE_STATE_END handler."""
body: str | None = data.get(WS_BODY)
if body == self.inst_id:
_LOGGER.debug("WS[%s]: DEVICE_STATE_END", self.inst_id)
self.state_end.set()
else:
_LOGGER.error("WS[%s]: DEVICE_STATE_END mismatch (%s)", self.inst_id, body)
async def handler_devices_update(self, data: dict[str, Any]) -> None:
"""WebSockets DEVICES_UPDATES handler."""
body: dict[str, Any] = data.get(WS_BODY, {})
update = EntityUpdate(UpdateType.WS_PARTIAL, body)
dev_id: str | None = body.get(API_DEVICE_ID)
_LOGGER.debug("WS[%s]: DEVICES_UPDATES[%s]", self.inst_id, dev_id)
device = self.cloudapi.get_device_id(dev_id)
if device is not None:
await device.update(update)
async def handler_error(self, msg: WSMessage) -> None:
"""WebSockets ERROR handler."""
_LOGGER.error("WS[%s]: ERROR -> %s", self.inst_id, msg)
async def handler_ping(self, ws: ClientWebSocketResponse) -> None:
"""WebSockets PING handler."""
_LOGGER.debug("WS[%s]: PING (%s)", self.inst_id, datetime.now())
await ws.pong()
async def handler_text(
self, ws: ClientWebSocketResponse, data: dict[str, Any]
) -> None:
"""WebSockets TEXT handler."""
event: str = data.get(WS_EVENT, "")
if event == WS_AUTH:
await self.handler_auth(ws, data)
elif event == WS_DEVICE_STATE:
await self.handler_device_state(data)
elif event == WS_DEVICE_STATE_END:
self.handler_device_state_end(data)
elif event.startswith(WS_DEVICES_UPDATES):
await self.handler_devices_update(data)
self.cloudapi.update_callback()
elif event.startswith(WS_WEBSERVER_UPDATES):
await self.handler_webserver_updates(data)
self.cloudapi.update_callback()
else:
_LOGGER.warning("WS[%s]: EVENT[%s] -> %s", self.inst_id, event, data)
async def handler_webserver_updates(self, data: dict[str, Any]) -> None:
"""WebSockets WEBSERVER_UPDATES handler."""
body: dict[str, Any] = data.get(WS_BODY, {})
update = EntityUpdate(UpdateType.WS_PARTIAL, body)
ws_id: str | None = body.get(API_WS_ID)
_LOGGER.debug("WS[%s]: WEBSERVER_UPDATES[%s]", self.inst_id, ws_id)
webserver = self.cloudapi.get_webserver_id(ws_id)
if webserver is not None:
await webserver.update(update)
async def handler(self, ws: ClientWebSocketResponse, msg: WSMessage) -> None:
"""WebSockets message handler."""
if msg.type == WSMsgType.TEXT:
json_data = None
try:
json_data = json_loads(msg.data)
except (JSONDecodeError, TypeError) as err:
_LOGGER.error(err)
if json_data is not None:
self.set_alive()
await self.handler_text(ws, json_data)
elif msg.type == WSMsgType.PING:
self.set_alive()
await self.handler_ping(ws)
elif msg.type == WSMsgType.CLOSE:
await self.handler_close(ws)
elif msg.type == WSMsgType.ERROR:
await self.handler_error(msg)
else:
_LOGGER.warning("Unknown WS msg: %s", msg)
def is_alive(self) -> bool:
"""WebSockets connection alive."""
return (
self.alive_dt is not None
and (datetime.now() - self.alive_dt) <= WS_ALIVE_PERIOD
)
def is_connected(self) -> bool:
"""WebSockets connection status."""
task = self.task
if task is None:
return False
return not task.done()
def set_alive(self) -> None:
"""WebSockets alive status update."""
self.alive_dt = datetime.now()
async def state_init(self) -> None:
"""WebSockets state init."""
_LOGGER.debug("WS[%s]: DEVICE_STATE_INIT", self.inst_id)
async with self.device_data_lock:
self.device_data.clear()
self.alive_dt = None
self.state_end.clear()
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