99 lines
3.0 KiB
Python
99 lines
3.0 KiB
Python
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"""Support for Telegram bot using polling."""
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import logging
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from telegram import Update
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from telegram.error import NetworkError, RetryAfter, TelegramError, TimedOut
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from telegram.ext import CallbackContext, Dispatcher, Handler, Updater
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from telegram.utils.types import HandlerArg
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from homeassistant.const import EVENT_HOMEASSISTANT_START, EVENT_HOMEASSISTANT_STOP
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from . import CONF_ALLOWED_CHAT_IDS, BaseTelegramBotEntity, initialize_bot
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_LOGGER = logging.getLogger(__name__)
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async def async_setup_platform(hass, config):
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"""Set up the Telegram polling platform."""
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bot = initialize_bot(config)
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pol = TelegramPoll(bot, hass, config[CONF_ALLOWED_CHAT_IDS])
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def _start_bot(_event):
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"""Start the bot."""
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pol.start_polling()
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def _stop_bot(_event):
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"""Stop the bot."""
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pol.stop_polling()
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hass.bus.async_listen_once(EVENT_HOMEASSISTANT_START, _start_bot)
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hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, _stop_bot)
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return True
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def process_error(update: Update, context: CallbackContext):
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"""Telegram bot error handler."""
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try:
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raise context.error
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except (TimedOut, NetworkError, RetryAfter):
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# Long polling timeout or connection problem. Nothing serious.
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pass
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except TelegramError:
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_LOGGER.error('Update "%s" caused error: "%s"', update, context.error)
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def message_handler(handler):
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"""Create messages handler."""
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class MessageHandler(Handler):
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"""Telegram bot message handler."""
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def __init__(self):
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"""Initialize the messages handler instance."""
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super().__init__(handler)
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def check_update(self, update):
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"""Check is update valid."""
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return isinstance(update, Update)
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def handle_update(
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self,
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update: HandlerArg,
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dispatcher: Dispatcher,
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check_result: object,
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context: CallbackContext = None,
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):
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"""Handle update."""
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optional_args = self.collect_optional_args(dispatcher, update)
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context.args = optional_args
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return self.callback(update, context)
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return MessageHandler()
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class TelegramPoll(BaseTelegramBotEntity):
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"""Asyncio telegram incoming message handler."""
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def __init__(self, bot, hass, allowed_chat_ids):
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"""Initialize the polling instance."""
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BaseTelegramBotEntity.__init__(self, hass, allowed_chat_ids)
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self.updater = Updater(bot=bot, workers=4)
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self.dispatcher = self.updater.dispatcher
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self.dispatcher.add_handler(message_handler(self.process_update))
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self.dispatcher.add_error_handler(process_error)
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def start_polling(self):
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"""Start the polling task."""
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self.updater.start_polling()
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def stop_polling(self):
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"""Stop the polling task."""
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self.updater.stop()
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def process_update(self, update: HandlerArg, context: CallbackContext):
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"""Process incoming message."""
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self.process_message(update.to_dict())
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