150 lines
5.7 KiB
Python
150 lines
5.7 KiB
Python
# Copyright (C) 2020 by Cathy Hu <cathy.hu@fau.de>
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# Copyright (C) 2020 by Martin Rey <martin.rey@mailbox.org>
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#
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# SPDX-License-Identifier: 0BSD
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from asyncio import CancelledError, gather, sleep
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from logging import getLogger
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from sqlite3 import IntegrityError
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from aiogram import Bot, Dispatcher, exceptions, types
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from ormantic.exceptions import NoMatch
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from kibicara.platformapi import Censor, Message, Spawner
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from kibicara.platforms.telegram.model import Telegram, TelegramUser
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logger = getLogger(__name__)
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class TelegramBot(Censor):
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def __init__(self, telegram_model):
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super().__init__(telegram_model.hood)
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self.telegram_model = telegram_model
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self.enabled = self.telegram_model.enabled
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@classmethod
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async def destroy_hood(cls, hood):
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"""Removes all its database entries."""
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for telegram in await Telegram.objects.filter(hood=hood).all():
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for user in await TelegramUser.objects.filter(bot=telegram).all():
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await user.delete()
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await telegram.delete()
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def _create_dispatcher(self):
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dp = Dispatcher(self.bot)
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dp.register_message_handler(self._send_welcome, commands=['start'])
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dp.register_message_handler(self._remove_user, commands=['stop'])
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dp.register_message_handler(self._send_help, commands=['help'])
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dp.register_message_handler(self._receive_message)
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return dp
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async def run(self):
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try:
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self.bot = Bot(token=self.telegram_model.api_token)
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self.dp = self._create_dispatcher()
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logger.debug('Bot {0} starting.'.format(self.telegram_model.hood.name))
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user = await self.bot.get_me()
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if user.username:
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await self.telegram_model.update(username=user.username)
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await gather(self.dp.start_polling(), self._push())
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except CancelledError:
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logger.debug(
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'Bot {0} received Cancellation.'.format(self.telegram_model.hood.name)
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)
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self.dp = None
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raise
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except exceptions.ValidationError:
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logger.debug(
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'Bot {0} has invalid auth token.'.format(self.telegram_model.hood.name)
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)
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await self.telegram_model.update(enabled=False)
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finally:
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logger.debug('Bot {0} stopped.'.format(self.telegram_model.hood.name))
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async def _push(self):
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while True:
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message = await self.receive()
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logger.debug(
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'Received message from censor ({0}): {1}'.format(
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self.telegram_model.hood.name, message.text
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)
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)
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for user in await TelegramUser.objects.filter(
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bot=self.telegram_model
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).all():
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await self._send_message(user.user_id, message.text)
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async def _send_message(self, user_id, message):
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try:
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await self.bot.send_message(user_id, message, disable_notification=False)
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except exceptions.BotBlocked:
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logger.error(
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'Target [ID:{0}] ({1}): blocked by user'.format(
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user_id, self.telegram_model.hood.name
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)
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)
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except exceptions.ChatNotFound:
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logger.error(
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'Target [ID:{0}] ({1}): invalid user ID'.format(
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user_id, self.telegram_model.hood.name
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)
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)
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except exceptions.RetryAfter as e:
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logger.error(
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'Target [ID:{0}] ({1}): Flood limit is exceeded.'.format(
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user_id, self.telegram_model.hood.name
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)
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+ 'Sleep {0} seconds.'.format(e.timeout)
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)
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await sleep(e.timeout)
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return await self._send_message(user_id, message)
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except exceptions.UserDeactivated:
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logger.error(
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'Target [ID:{0}] ({1}): user is deactivated'.format(
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user_id, self.telegram_model.hood.name
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)
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)
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except exceptions.TelegramAPIError:
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logger.exception(
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'Target [ID:{0}] ({1}): failed'.format(
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user_id, self.telegram_model.hood.name
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)
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)
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async def _send_welcome(self, message: types.Message):
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try:
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if message.from_user.is_bot:
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await message.reply('Error: Bots can not join here.')
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return
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await TelegramUser.objects.create(
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user_id=message.from_user.id, bot=self.telegram_model
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)
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await message.reply(self.telegram_model.welcome_message)
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except IntegrityError:
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await message.reply('Error: You are already registered.')
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async def _remove_user(self, message: types.Message):
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try:
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telegram_user = await TelegramUser.objects.get(
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user_id=message.from_user.id, bot=self.telegram_model
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)
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await telegram_user.delete()
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await message.reply('You were removed successfully from this bot.')
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except NoMatch:
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await message.reply('Error: You are not subscribed to this bot.')
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async def _send_help(self, message: types.Message):
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if message.from_user.is_bot:
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await message.reply('Error: Bots can\'t be helped.')
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return
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await message.reply('Send messages here to broadcast them to your hood')
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async def _receive_message(self, message: types.Message):
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if not message.text:
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await message.reply('Error: Only text messages are allowed.')
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return
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await self.publish(Message(message.text))
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spawner = Spawner(Telegram, TelegramBot)
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