pyhOn/pyhon/connection/handler.py
2023-04-14 23:15:27 +02:00

159 lines
5.7 KiB
Python

import json
from collections.abc import Generator, AsyncIterator, Coroutine
from contextlib import asynccontextmanager
from typing import Optional, Callable, Dict
from typing_extensions import Self
import aiohttp
from pyhon import const, exceptions
from pyhon.connection.auth import HonAuth, _LOGGER
from pyhon.connection.device import HonDevice
from pyhon.exceptions import HonAuthenticationError
class HonBaseConnectionHandler:
_HEADERS: Dict = {
"user-agent": const.USER_AGENT,
"Content-Type": "application/json",
}
def __init__(self, session: Optional[aiohttp.ClientSession] = None) -> None:
self._create_session: bool = session is None
self._session: Optional[aiohttp.ClientSession] = session
self._auth: Optional[HonAuth] = None
async def __aenter__(self) -> Self:
return await self.create()
async def __aexit__(self, exc_type, exc_val, exc_tb) -> None:
await self.close()
@property
def auth(self) -> Optional[HonAuth]:
return self._auth
async def create(self) -> Self:
if self._create_session:
self._session = aiohttp.ClientSession()
return self
@asynccontextmanager
def _intercept(self, method: Callable, *args, loop: int = 0, **kwargs):
raise NotImplementedError
@asynccontextmanager
async def get(self, *args, **kwargs) -> AsyncIterator[Callable]:
if self._session is None:
raise exceptions.NoSessionException()
response: Callable
async with self._intercept(self._session.get, *args, **kwargs) as response:
yield response
@asynccontextmanager
async def post(self, *args, **kwargs) -> AsyncIterator[Callable]:
if self._session is None:
raise exceptions.NoSessionException()
response: Callable
async with self._intercept(self._session.post, *args, **kwargs) as response:
yield response
async def close(self) -> None:
if self._create_session and self._session is not None:
await self._session.close()
class HonConnectionHandler(HonBaseConnectionHandler):
def __init__(
self, email: str, password: str, session: Optional[aiohttp.ClientSession] = None
) -> None:
super().__init__(session=session)
self._device: HonDevice = HonDevice()
self._email: str = email
self._password: str = password
if not self._email:
raise HonAuthenticationError("An email address must be specified")
if not self._password:
raise HonAuthenticationError("A password address must be specified")
@property
def device(self) -> HonDevice:
return self._device
async def create(self) -> Self:
await super().create()
self._auth: HonAuth = HonAuth(
self._session, self._email, self._password, self._device
)
return self
async def _check_headers(self, headers: Dict) -> Dict:
if not (self._auth.cognito_token and self._auth.id_token):
await self._auth.authenticate()
headers["cognito-token"] = self._auth.cognito_token
headers["id-token"] = self._auth.id_token
return self._HEADERS | headers
@asynccontextmanager
async def _intercept(
self, method: Callable, *args, loop: int = 0, **kwargs
) -> AsyncIterator:
kwargs["headers"] = await self._check_headers(kwargs.get("headers", {}))
async with method(*args, **kwargs) as response:
if (
self._auth.token_expires_soon or response.status in [401, 403]
) and loop == 0:
_LOGGER.info("Try refreshing token...")
await self._auth.refresh()
async with self._intercept(
method, *args, loop=loop + 1, **kwargs
) as result:
yield result
elif (
self._auth.token_is_expired or response.status in [401, 403]
) and loop == 1:
_LOGGER.warning(
"%s - Error %s - %s",
response.request_info.url,
response.status,
await response.text(),
)
await self.create()
async with self._intercept(
method, *args, loop=loop + 1, **kwargs
) as result:
yield result
elif loop >= 2:
_LOGGER.error(
"%s - Error %s - %s",
response.request_info.url,
response.status,
await response.text(),
)
raise HonAuthenticationError("Login failure")
else:
try:
await response.json()
yield response
except json.JSONDecodeError:
_LOGGER.warning(
"%s - JsonDecodeError %s - %s",
response.request_info.url,
response.status,
await response.text(),
)
raise HonAuthenticationError("Decode Error")
class HonAnonymousConnectionHandler(HonBaseConnectionHandler):
_HEADERS: Dict = HonBaseConnectionHandler._HEADERS | {"x-api-key": const.API_KEY}
@asynccontextmanager
async def _intercept(
self, method: Callable, *args, loop: int = 0, **kwargs
) -> AsyncIterator:
kwargs["headers"] = kwargs.pop("headers", {}) | self._HEADERS
async with method(*args, **kwargs) as response:
if response.status == 403:
_LOGGER.error("Can't authenticate anymore")
yield response