Telegram module #10
45
telegram.py
45
telegram.py
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@ -16,7 +16,7 @@ class CommandProcessor:
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self.bot: TeleBot = TeleBot(token, use_class_middlewares=True)
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self.bot.setup_middleware(UserAuthMiddleware(database))
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self.bot.setup_middleware(ExceptionHandlerMiddleware(self.bot))
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self.db: Database = database
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self.database: Database = database
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def run(self):
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"""Run a bot and poll for new messages indefinitely."""
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@ -28,7 +28,7 @@ class CommandProcessor:
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self.bot.infinity_polling()
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def __command_help(self, message: Message, data: dict):
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def __command_help(self, message: Message):
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self.bot.reply_to(
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message,
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'Supported commands:\n'
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@ -47,12 +47,12 @@ class CommandProcessor:
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if not self.__is_url_valid(url):
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raise DisplayableException('Invalid feed URL')
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self.db.subscribe_user_by_url(data['user_id'], url)
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self.database.subscribe_user_by_url(data['user_id'], url)
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self.bot.reply_to(message, 'Successfully subscribed to feed.')
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def __list_feeds(self, message: Message, data: dict):
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feeds = self.db.find_user_feeds(data['user_id'])
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feeds = self.database.find_user_feeds(data['user_id'])
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feed_list = ''
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for feed in feeds:
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@ -69,15 +69,16 @@ class CommandProcessor:
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if not self.__is_url_valid(url):
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raise DisplayableException('Invalid feed URL')
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self.db.unsubscribe_user_by_url(data['user_id'], url)
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self.database.unsubscribe_user_by_url(data['user_id'], url)
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self.bot.reply_to(message, 'Unsubscribed.')
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def __is_url_valid(self, url: str) -> bool:
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@staticmethod
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def __is_url_valid(url: str) -> bool:
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if not validators.url(url):
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return False
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"""For security reasons we should not allow anything except HTTP/HTTPS."""
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# For security reasons we should not allow anything except HTTP/HTTPS.
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if not url.startswith(('http://', 'https://')):
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return False
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return True
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@ -101,13 +102,8 @@ class Notifier:
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parse_mode='MarkdownV2'
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)
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def __format_message(self) -> str:
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update = {
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'title': 'Item Title',
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'text': 'Short item text here...',
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'url': 'https://fediland.github.io/',
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}
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@staticmethod
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def __format_message(item) -> str:
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return (
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f"**[{update['title']}]({update['url']})**\n\n"
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f"{update['text']}"
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@ -117,25 +113,24 @@ class Notifier:
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class UserAuthMiddleware(BaseMiddleware):
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"""Transparently authenticates and registers the user if needed."""
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def __init__(self, db: Database):
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def __init__(self, database: Database):
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super().__init__()
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self.update_types = ['message']
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self.db: Database = db
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self.database: Database = database
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def pre_process(self, message: Message, data: dict):
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"""Pre-process the message, find user and add it's ID to the handler data dictionary."""
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"""Pre-process update, find user and add it's ID to the handler data dictionary."""
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data['user_id'] = self.__find_or_register_user(message)
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def post_process(self, message: Message, data: dict, exception):
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"""Post-process the message."""
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pass
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"""Post-process update."""
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def __find_or_register_user(self, message: Message) -> int:
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telegram_id = message.from_user.id
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user_id = self.db.find_user(telegram_id)
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user_id = self.database.find_user(telegram_id)
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if user_id is None:
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return self.db.add_user(telegram_id)
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return self.database.add_user(telegram_id)
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return user_id
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@ -147,13 +142,15 @@ class ExceptionHandlerMiddleware(BaseMiddleware):
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self.update_types = ['message']
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self.bot: TeleBot = bot
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def pre_process(self, message, data):
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pass
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def pre_process(self, message: Message, data: dict):
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"""Pre-process update."""
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# pylint: disable=W0613
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def post_process(self, message: Message, data: dict, exception: Exception | None):
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"""Post-process update. Send user an error notification."""
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if exception is None:
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return
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elif type(exception) is DisplayableException:
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if isinstance(exception, DisplayableException):
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self.bot.reply_to(message, 'Error: ' + str(exception))
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else:
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self.bot.reply_to(message, 'Something went wrong. Please try again (maybe later).')
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