Miroslavsckaya/tg_rss_bot
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Logging added #34

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Miroslavsckaya merged 3 commits from feature_logging into master 2022-07-10 12:07:27 +00:00
Conversation 0 Commits 3 Files changed 6 +126 -22
6 changed files with 126 additions and 22 deletions
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15
bot.py
View file

@ -9,10 +9,17 @@ from telegram import CommandProcessor
load_dotenv() load_dotenv()
token = os.getenv('TELEGRAM_TOKEN') token = os.getenv('TELEGRAM_TOKEN')
db_path = os.getenv('DATABASE_PATH') db_path = os.getenv('DATABASE_PATH', './bot.db')
log_level = os.getenv('LOG_LEVEL', 'INFO')
db = Database(db_path) print('Starting the bot with logging level', log_level.upper())
bot = CommandProcessor(token, db) logging.basicConfig(
level=log_level.upper(),
format='%(asctime)s: <%(name)s> [%(levelname)s] %(message)s',
datefmt='%Y-%m-%d %H:%M:%S',
)
db = Database(db_path, logging.getLogger('Database'))
bot = CommandProcessor(token, db, logging.getLogger('CommandProcessor'))
logging.info("Starting Telegram bot")
bot.run() bot.run()

30
database.py
View file

@ -1,5 +1,7 @@
import sqlite3 import sqlite3
from logging import Logger
from exceptions import DisplayableException from exceptions import DisplayableException
from rss import FeedItem from rss import FeedItem
@ -7,8 +9,10 @@ from rss import FeedItem
class Database: class Database:
"""Implement interaction with the database.""" """Implement interaction with the database."""
def __init__(self, path: str) -> None: def __init__(self, path: str, log: Logger) -> None:
"""Create a database file if not exists.""" """Create a database file if not exists."""
self.log: Logger = log
self.log.debug('Database.__init__(path=\'%s\')', path)
# TODO: think about removing check_same_thread=False # TODO: think about removing check_same_thread=False
self.conn = sqlite3.connect(path, check_same_thread=False) self.conn = sqlite3.connect(path, check_same_thread=False)
self.conn.row_factory = sqlite3.Row self.conn.row_factory = sqlite3.Row
@ -17,12 +21,14 @@ class Database:
def add_user(self, telegram_id: int) -> int: def add_user(self, telegram_id: int) -> int:
"""Add a user's telegram id to the database and return its database id.""" """Add a user's telegram id to the database and return its database id."""
self.log.debug('add_user(telegram_id=\'%s\')', telegram_id)
self.cur.execute('INSERT INTO users (telegram_id) VALUES (?)', [telegram_id]) self.cur.execute('INSERT INTO users (telegram_id) VALUES (?)', [telegram_id])
self.conn.commit() self.conn.commit()
return self.cur.lastrowid return self.cur.lastrowid
def find_user(self, telegram_id: int) -> int | None: def find_user(self, telegram_id: int) -> int | None:
"""Get a user's telegram id and return its database id.""" """Get a user's telegram id and return its database id."""
self.log.debug('find_user(telegram_id=\'%s\')', telegram_id)
self.cur.execute('SELECT id FROM users WHERE telegram_id = ?', [telegram_id]) self.cur.execute('SELECT id FROM users WHERE telegram_id = ?', [telegram_id])
row = self.cur.fetchone() row = self.cur.fetchone()
if row is None: if row is None:
@ -31,12 +37,14 @@ class Database:
def add_feed(self, url: str) -> int: def add_feed(self, url: str) -> int:
"""Add a feed to the database and return its id.""" """Add a feed to the database and return its id."""
self.log.debug('add_feed(url=\'%s\')', url)
self.cur.execute('INSERT INTO feeds (url) VALUES (?)', [url]) self.cur.execute('INSERT INTO feeds (url) VALUES (?)', [url])
self.conn.commit() self.conn.commit()
return self.cur.lastrowid return self.cur.lastrowid
def find_feed_by_url(self, url: str) -> int | None: def find_feed_by_url(self, url: str) -> int | None:
"""Find feed ID by url.""" """Find feed ID by url."""
self.log.debug('find_feed_by_url(url=\'%s\')', url)
self.cur.execute('SELECT id FROM feeds WHERE url = ?', [url]) self.cur.execute('SELECT id FROM feeds WHERE url = ?', [url])
row = self.cur.fetchone() row = self.cur.fetchone()
if row is None: if row is None:
@ -45,6 +53,7 @@ class Database:
def subscribe_user_by_url(self, user_id: int, url: str) -> None: def subscribe_user_by_url(self, user_id: int, url: str) -> None:
"""Subscribe user to the feed creating it if does not exist yet.""" """Subscribe user to the feed creating it if does not exist yet."""
self.log.debug('subscribe_user_by_url(user_id=\'%s\', url=\'%s\')', user_id, url)
feed_id = self.find_feed_by_url(url) feed_id = self.find_feed_by_url(url)
if feed_id is None: if feed_id is None:
feed_id = self.add_feed(url) feed_id = self.add_feed(url)
@ -56,11 +65,13 @@ class Database:
def subscribe_user(self, user_id: int, feed_id: int) -> None: def subscribe_user(self, user_id: int, feed_id: int) -> None:
"""Subscribe a user to the feed.""" """Subscribe a user to the feed."""
self.log.debug('subscribe_user(user_id=\'%s\', feed_id=\'%s\')', user_id, feed_id)
self.cur.execute('INSERT INTO subscriptions (user_id, feed_id) VALUES (?, ?)', [user_id, feed_id]) self.cur.execute('INSERT INTO subscriptions (user_id, feed_id) VALUES (?, ?)', [user_id, feed_id])
self.conn.commit() self.conn.commit()
def unsubscribe_user_by_url(self, user_id: int, url: str) -> None: def unsubscribe_user_by_url(self, user_id: int, url: str) -> None:
"""Subscribe a user to the feed by url.""" """Subscribe a user to the feed by url."""
self.log.debug('unsubscribe_user_by_url(user_id=\'%s\', url=\'%s\')', user_id, url)
feed_id = self.find_feed_by_url(url) feed_id = self.find_feed_by_url(url)
if feed_id is None: if feed_id is None:
raise DisplayableException('Feed does not exist') raise DisplayableException('Feed does not exist')
@ -76,11 +87,13 @@ class Database:
def unsubscribe_user(self, user_id: int, feed_id: int) -> None: def unsubscribe_user(self, user_id: int, feed_id: int) -> None:
"""Unsubscribe a user from the feed.""" """Unsubscribe a user from the feed."""
self.log.debug('unsubscribe_user(user_id=\'%s\', feed_id=\'%s\')', user_id, feed_id)
self.cur.execute('DELETE FROM subscriptions WHERE feed_id = ? AND user_id = ?', [feed_id, user_id]) self.cur.execute('DELETE FROM subscriptions WHERE feed_id = ? AND user_id = ?', [feed_id, user_id])
self.conn.commit() self.conn.commit()
def is_user_subscribed(self, user_id: int, feed_id: int) -> bool: def is_user_subscribed(self, user_id: int, feed_id: int) -> bool:
"""Check if user subscribed to specific feed.""" """Check if user subscribed to specific feed."""
self.log.debug('is_user_subscribed(user_id=\'%s\', feed_id=\'%s\')', user_id, feed_id)
self.cur.execute('SELECT 1 FROM subscriptions WHERE user_id = ? AND feed_id = ?', [user_id, feed_id]) self.cur.execute('SELECT 1 FROM subscriptions WHERE user_id = ? AND feed_id = ?', [user_id, feed_id])
row = self.cur.fetchone() row = self.cur.fetchone()
if row is None: if row is None:
@ -89,17 +102,20 @@ class Database:
def delete_feed(self, feed_id: int) -> None: def delete_feed(self, feed_id: int) -> None:
"""Delete a feed.""" """Delete a feed."""
self.log.debug('delete_feed(feed_id=\'%s\')', feed_id)
self.cur.execute('DELETE FROM feeds WHERE id = ?', [feed_id]) self.cur.execute('DELETE FROM feeds WHERE id = ?', [feed_id])
self.conn.commit() self.conn.commit()
def get_feed_subscribers_count(self, feed_id: int) -> int: def get_feed_subscribers_count(self, feed_id: int) -> int:
"""Count feed subscribers.""" """Count feed subscribers."""
self.log.debug('get_feed_subscribers_count(feed_id=\'%s\')', feed_id)
self.cur.execute('SELECT COUNT(user_id) AS amount_subscribers FROM subscriptions WHERE feed_id = ?', [feed_id]) self.cur.execute('SELECT COUNT(user_id) AS amount_subscribers FROM subscriptions WHERE feed_id = ?', [feed_id])
row = self.cur.fetchone() row = self.cur.fetchone()
return row['amount_subscribers'] return row['amount_subscribers']
def find_feed_subscribers(self, feed_id: int) -> list[int]: def find_feed_subscribers(self, feed_id: int) -> list[int]:
"""Return feed subscribers""" """Return feed subscribers"""
self.log.debug('find_feed_subscribers(feed_id=\'%s\')', feed_id)
self.cur.execute('SELECT telegram_id FROM users WHERE id IN (SELECT user_id FROM subscriptions WHERE feed_id = ?)', self.cur.execute('SELECT telegram_id FROM users WHERE id IN (SELECT user_id FROM subscriptions WHERE feed_id = ?)',
[feed_id]) [feed_id])
subscribers = self.cur.fetchall() subscribers = self.cur.fetchall()
@ -107,29 +123,34 @@ class Database:
def find_feeds(self) -> list[sqlite3.Row]: def find_feeds(self) -> list[sqlite3.Row]:
"""Get a list of feeds.""" """Get a list of feeds."""
self.log.debug('find_feeds()')
self.cur.execute('SELECT * FROM feeds') self.cur.execute('SELECT * FROM feeds')
return self.cur.fetchall() return self.cur.fetchall()
def find_user_feeds(self, user_id: int) -> list[sqlite3.Row]: def find_user_feeds(self, user_id: int) -> list[sqlite3.Row]:
"""Return a list of feeds the user is subscribed to.""" """Return a list of feeds the user is subscribed to."""
self.log.debug('find_user_feeds(user_id=\'%s\')', user_id)
self.cur.execute('SELECT * FROM feeds WHERE id IN (SELECT feed_id FROM subscriptions WHERE user_id = ?)', self.cur.execute('SELECT * FROM feeds WHERE id IN (SELECT feed_id FROM subscriptions WHERE user_id = ?)',
[user_id]) [user_id])
return self.cur.fetchall() return self.cur.fetchall()
def find_feed_items(self, feed_id: int) -> list[sqlite3.Row]: def find_feed_items(self, feed_id: int) -> list[sqlite3.Row]:
"""Get last feed items.""" """Get last feed items."""
self.log.debug('find_feed_items(feed_id=\'%s\')', feed_id)
self.cur.execute('SELECT * FROM feeds_last_items WHERE feed_id = ?', [feed_id]) self.cur.execute('SELECT * FROM feeds_last_items WHERE feed_id = ?', [feed_id])
return self.cur.fetchall() return self.cur.fetchall()
def find_feed_items_urls(self, feed_id: int) -> list[str]: def find_feed_items_urls(self, feed_id: int) -> list[str]:
"""Return urls last feed items""" """Return urls last feed items"""
self.log.debug('find_feed_items_urls(feed_id=\'%s\')', feed_id)
items = self.find_feed_items(feed_id) items = self.find_feed_items(feed_id)
if not items: if not items:
return items return []
return list(map(lambda x: x['url'], items)) return list(map(lambda x: x['url'], items))
def update_feed_items(self, feed_id: int, new_items: list[FeedItem]) -> None: def update_feed_items(self, feed_id: int, new_items: list[FeedItem]) -> None:
"""Replace last feed items with a list items that receive.""" """Replace last feed items with a list items that receive."""
self.log.debug('update_feed_items(feed_id=\'%s\', new_items=list(%d))', feed_id, len(new_items))
for i, _ in enumerate(new_items): for i, _ in enumerate(new_items):
new_items[i] = [feed_id] + list(new_items[i].__dict__.values())[:-1] new_items[i] = [feed_id] + list(new_items[i].__dict__.values())[:-1]
@ -138,8 +159,9 @@ class Database:
'INSERT INTO feeds_last_items (feed_id, url, title, description) VALUES (?, ?, ?, ?)', new_items) 'INSERT INTO feeds_last_items (feed_id, url, title, description) VALUES (?, ?, ?, ?)', new_items)
self.conn.commit() self.conn.commit()
def __init_schema(self): def __init_schema(self) -> None:
# TODO: Move to migrations self.log.debug('__init_schema()')
# TODO: Change to migrations
self.cur.execute( self.cur.execute(
'CREATE TABLE IF NOT EXISTS users (id INTEGER, telegram_id INTEGER NOT NULL UNIQUE, PRIMARY KEY(id))' 'CREATE TABLE IF NOT EXISTS users (id INTEGER, telegram_id INTEGER NOT NULL UNIQUE, PRIMARY KEY(id))'
) )

8
rss.py
View file

@ -1,3 +1,5 @@
from logging import Logger
from feedparser import FeedParserDict, parse from feedparser import FeedParserDict, parse
@ -22,5 +24,11 @@ class Feed:
class RssReader: class RssReader:
def __init__(self, logger: Logger):
self.log: Logger = logger
self.log.debug('RssReader.__init__(logger=%s)', logger)
def get_feed(self, url: str) -> Feed: def get_feed(self, url: str) -> Feed:
self.log.debug('get_feed(url=\'%s\')', url)
return Feed(url, parse(url)) return Feed(url, parse(url))

53
telegram.py
View file

@ -1,6 +1,7 @@
import time import time
from bleach.sanitizer import Cleaner from bleach.sanitizer import Cleaner
from logging import Logger
from telebot import TeleBot from telebot import TeleBot
from telebot.handler_backends import BaseMiddleware from telebot.handler_backends import BaseMiddleware
from telebot.types import Message from telebot.types import Message
@ -14,26 +15,33 @@ from rss import FeedItem
class CommandProcessor: class CommandProcessor:
"""Processes user input and dispatches the data to other services.""" """Processes user input and dispatches the data to other services."""
def __init__(self, token: str, database: Database): def __init__(self, token: str, database: Database, logger: Logger):
self.log = logger
self.log.debug(
'CommandProcessor.__init__(token=\'%s\', database=%s, logger=%s)', token[:8] + '...', database, logger
)
if token is None or len(token) == 0: if token is None or len(token) == 0:
raise ValueError("Token should not be empty") raise ValueError("Token should not be empty")
self.bot: TeleBot = TeleBot(token, use_class_middlewares=True) self.bot: TeleBot = TeleBot(token, use_class_middlewares=True)
self.bot.setup_middleware(UserAuthMiddleware(database)) self.bot.setup_middleware(UserAuthMiddleware(database, logger))
self.bot.setup_middleware(ExceptionHandlerMiddleware(self.bot)) self.bot.setup_middleware(ExceptionHandlerMiddleware(self.bot, logger))
self.database: Database = database self.database: Database = database
def run(self): def run(self):
"""Run a bot and poll for new messages indefinitely.""" """Run a bot and poll for new messages indefinitely."""
self.log.debug('Registering handlers')
self.bot.register_message_handler(commands=['add'], callback=self.__add_feed) self.bot.register_message_handler(commands=['add'], callback=self.__add_feed)
self.bot.register_message_handler(commands=['list'], callback=self.__list_feeds) self.bot.register_message_handler(commands=['list'], callback=self.__list_feeds)
self.bot.register_message_handler(commands=['del'], callback=self.__delete_feed) self.bot.register_message_handler(commands=['del'], callback=self.__delete_feed)
self.bot.register_message_handler(commands=['help', 'start'], callback=self.__command_help) self.bot.register_message_handler(commands=['help', 'start'], callback=self.__command_help)
self.bot.register_message_handler(callback=self.__command_help) self.bot.register_message_handler(callback=self.__command_help)
self.log.info('Starting to poll the servers')
self.bot.infinity_polling() self.bot.infinity_polling()
def __command_help(self, message: Message, data: dict): def __command_help(self, message: Message, data: dict):
# pylint: disable=unused-argument # pylint: disable=unused-argument
self.log.debug('__command_help(message=\'%s\', data=\'%s\')', message, data)
self.bot.reply_to( self.bot.reply_to(
message, message,
'Supported commands:\n' 'Supported commands:\n'
@ -44,19 +52,23 @@ class CommandProcessor:
) )
def __add_feed(self, message: Message, data: dict): def __add_feed(self, message: Message, data: dict):
self.log.debug('__add_feed(message=\'%s\', data=\'%s\')', message, data)
args = message.text.split() args = message.text.split()
if len(args) < 2: if len(args) < 2:
raise DisplayableException('Feed URL should be specified') raise DisplayableException('Feed URL should be specified')
url = str(args[1]) url = str(args[1])
self.log.info('User %s requested to subscribe to %s', data['user_id'], url)
if not self.__is_url_valid(url): if not self.__is_url_valid(url):
raise DisplayableException('Invalid feed URL') raise DisplayableException('Invalid feed URL')
self.database.subscribe_user_by_url(data['user_id'], url) self.database.subscribe_user_by_url(data['user_id'], url)
self.log.info('Subscription added')
self.bot.reply_to(message, 'Successfully subscribed to feed.') self.bot.reply_to(message, 'Successfully subscribed to feed.')
def __list_feeds(self, message: Message, data: dict): def __list_feeds(self, message: Message, data: dict):
self.log.debug('__list_feeds(message=\'%s\', data=\'%s\')', message, data)
feeds = self.database.find_user_feeds(data['user_id']) feeds = self.database.find_user_feeds(data['user_id'])
feed_list = '' feed_list = ''
@ -66,15 +78,18 @@ class CommandProcessor:
self.bot.reply_to(message, 'Your feeds:\n' + feed_list) self.bot.reply_to(message, 'Your feeds:\n' + feed_list)
def __delete_feed(self, message: Message, data: dict): def __delete_feed(self, message: Message, data: dict):
self.log.debug('__delete_feed(message=\'%s\', data=\'%s\')', message, data)
args = message.text.split() args = message.text.split()
if len(args) < 2: if len(args) < 2:
raise DisplayableException('Feed URL should be specified') raise DisplayableException('Feed URL should be specified')
url = str(args[1]) url = str(args[1])
self.log.info('User %s requested to unsubscribe from %s', data['user_id'], url)
if not self.__is_url_valid(url): if not self.__is_url_valid(url):
raise DisplayableException('Invalid feed URL') raise DisplayableException('Invalid feed URL')
self.database.unsubscribe_user_by_url(data['user_id'], url) self.database.unsubscribe_user_by_url(data['user_id'], url)
self.log.info('Subscription removed')
self.bot.reply_to(message, 'Unsubscribed.') self.bot.reply_to(message, 'Unsubscribed.')
@ -96,7 +111,9 @@ class Notifier:
sent_counter: int = 0 sent_counter: int = 0
def __init__(self, token: str): def __init__(self, token: str, logger: Logger):
self.log = logger
self.log.debug('Notifier.__init__(token=\'%s\', logger=%s)', token[:8] + '...', logger)
self.bot: TeleBot = TeleBot(token) self.bot: TeleBot = TeleBot(token)
self.html_sanitizer: Cleaner = Cleaner( self.html_sanitizer: Cleaner = Cleaner(
tags=['b', 'strong', 'i', 'em', 'u', 'ins', 's', 'strike', 'del', 'span', 'tg-spoiler', 'a', 'code', 'pre'], tags=['b', 'strong', 'i', 'em', 'u', 'ins', 's', 'strike', 'del', 'span', 'tg-spoiler', 'a', 'code', 'pre'],
@ -107,10 +124,17 @@ class Notifier:
def send_updates(self, chat_ids: list[int], updates: list[FeedItem], feed_title: str): def send_updates(self, chat_ids: list[int], updates: list[FeedItem], feed_title: str):
"""Send notification about new items to the user""" """Send notification about new items to the user"""
self.log.debug(
'send_updates(chat_ids=list(%d), updates=list(%d), feed_title=\'%s\')',
len(chat_ids), len(updates), feed_title
)
if not updates: if not updates:
self.log.debug('No updates to send')
return return
self.log.debug('%d updates to send to %d chats', len(updates), len(chat_ids))
for chat_id in chat_ids: for chat_id in chat_ids:
self.log.debug('Processing chat_id=%s', chat_id)
self.__count_request_and_wait() self.__count_request_and_wait()
self.bot.send_message( self.bot.send_message(
chat_id=chat_id, chat_id=chat_id,
@ -122,6 +146,7 @@ class Notifier:
self.__send_update(chat_id, update) self.__send_update(chat_id, update)
def __send_update(self, chat_id: int, update: FeedItem): def __send_update(self, chat_id: int, update: FeedItem):
self.log.debug('__send_update(chat_id=\'%s\', update=\'%s\')', chat_id, update)
self.bot.send_message( self.bot.send_message(
chat_id=chat_id, chat_id=chat_id,
text=self.__format_message(update), text=self.__format_message(update),
@ -129,9 +154,11 @@ class Notifier:
) )
def __count_request_and_wait(self): def __count_request_and_wait(self):
self.log.debug('__count_request_and_wait()')
if self.sent_counter >= self.BATCH_LIMIT: if self.sent_counter >= self.BATCH_LIMIT:
# TODO: probably implement better later self.log.debug('Requests limit exceeded, sleeping for a second')
time.sleep(1) time.sleep(1)
self.log.debug('Resetting counter')
self.sent_counter = 0 self.sent_counter = 0
self.sent_counter += 1 self.sent_counter += 1
@ -151,22 +178,28 @@ class Notifier:
class UserAuthMiddleware(BaseMiddleware): class UserAuthMiddleware(BaseMiddleware):
"""Transparently authenticates and registers the user if needed.""" """Transparently authenticates and registers the user if needed."""
def __init__(self, database: Database): def __init__(self, database: Database, logger: Logger):
self.log: Logger = logger
self.log.debug('UserAuthMiddleware.__init__(database=%s, logger=%s)', database, logger)
super().__init__() super().__init__()
self.update_types = ['message'] self.update_types = ['message']
self.database: Database = database self.database: Database = database
def pre_process(self, message: Message, data: dict): def pre_process(self, message: Message, data: dict):
"""Pre-process update, find user and add it's ID to the handler data dictionary.""" """Pre-process update, find user and add it's ID to the handler data dictionary."""
self.log.debug('UserAuthMiddleware.pre_process()')
data['user_id'] = self.__find_or_register_user(message) data['user_id'] = self.__find_or_register_user(message)
def post_process(self, message: Message, data: dict, exception): def post_process(self, message: Message, data: dict, exception):
"""Post-process update.""" """Post-process update."""
def __find_or_register_user(self, message: Message) -> int: def __find_or_register_user(self, message: Message) -> int:
self.log.debug('__find_or_register_user()')
telegram_id = message.from_user.id telegram_id = message.from_user.id
self.log.debug('Telegram chat_id=%s', telegram_id)
user_id = self.database.find_user(telegram_id) user_id = self.database.find_user(telegram_id)
self.log.debug('Database user ID is \'%s\'', user_id)
if user_id is None: if user_id is None:
return self.database.add_user(telegram_id) return self.database.add_user(telegram_id)
return user_id return user_id
@ -175,7 +208,9 @@ class UserAuthMiddleware(BaseMiddleware):
class ExceptionHandlerMiddleware(BaseMiddleware): class ExceptionHandlerMiddleware(BaseMiddleware):
"""Sends messages to the user on exception.""" """Sends messages to the user on exception."""
def __init__(self, bot: TeleBot): def __init__(self, bot: TeleBot, logger: Logger):
self.log: Logger = logger
self.log.debug('ExceptionHandlerMiddleware.__init__(bot=%s, logger=%s)', bot, logger)
super().__init__() super().__init__()
self.update_types = ['message'] self.update_types = ['message']
self.bot: TeleBot = bot self.bot: TeleBot = bot
@ -186,8 +221,12 @@ class ExceptionHandlerMiddleware(BaseMiddleware):
# pylint: disable=W0613 # pylint: disable=W0613
def post_process(self, message: Message, data: dict, exception: Exception | None): def post_process(self, message: Message, data: dict, exception: Exception | None):
"""Post-process update. Send user an error notification.""" """Post-process update. Send user an error notification."""
self.log.debug('ExceptionHandlerMiddleware.post_process()')
if exception is None: if exception is None:
return return
self.log.exception('Exception caught during message processing: %s', exception)
if isinstance(exception, DisplayableException): if isinstance(exception, DisplayableException):
self.bot.reply_to(message, 'Error: ' + str(exception)) self.bot.reply_to(message, 'Error: ' + str(exception))
else: else:

23
update.py
View file

@ -1,18 +1,29 @@
import logging
import os import os
from dotenv import load_dotenv
from rss import RssReader from rss import RssReader
from update_manager import UpdateManager from update_manager import UpdateManager
from database import Database from database import Database
from telegram import Notifier from telegram import Notifier
from dotenv import load_dotenv
load_dotenv() load_dotenv()
token = os.getenv('TELEGRAM_TOKEN') token = os.getenv('TELEGRAM_TOKEN')
db_path = os.getenv('DATABASE_PATH') db_path = os.getenv('DATABASE_PATH', './bot.db')
log_level = os.getenv('LOG_LEVEL', 'INFO')
db = Database(db_path) print('Starting the updater with logging level', log_level.upper())
notifier = Notifier(token) logging.basicConfig(
rss_reader = RssReader() level=log_level.upper(),
format='%(asctime)s: <%(name)s> [%(levelname)s] %(message)s',
datefmt='%Y-%m-%d %H:%M:%S'
)
updater = UpdateManager(db, notifier, rss_reader) db = Database(db_path, logging.getLogger('Database'))
notifier = Notifier(token, logging.getLogger('Notifier'))
rss_reader = RssReader(logging.getLogger('RssReader'))
updater = UpdateManager(db, notifier, rss_reader, logging.getLogger('UpdateManager'))
updater.update() updater.update()

19
update_manager.py
View file

@ -1,3 +1,5 @@
from logging import Logger
from rss import RssReader, FeedItem from rss import RssReader, FeedItem
from database import Database from database import Database
from telegram import Notifier from telegram import Notifier
@ -6,16 +8,24 @@ from telegram import Notifier
class UpdateManager: class UpdateManager:
"""Implement the feed update.""" """Implement the feed update."""
def __init__(self, database: Database, notifier: Notifier, rss_reader: RssReader) -> None: def __init__(self, database: Database, notifier: Notifier, rss_reader: RssReader, logger: Logger) -> None:
self.log: Logger = logger
self.log.debug(
'UpdateManager.__init__(database=%s, notifier=%s, rss_reader=%s, logger=%s)',
database, notifier, rss_reader, logger
)
self.database: Database = database self.database: Database = database
self.notifier: Notifier = notifier self.notifier: Notifier = notifier
self.rss_reader: RssReader = rss_reader self.rss_reader: RssReader = rss_reader
def update(self): def update(self):
"""Send new feed items to the user.""" """Send new feed items to the user."""
self.log.info('Running update')
feeds = self.database.find_feeds() feeds = self.database.find_feeds()
self.log.info('Feeds to update: %d', len(feeds))
for feed_id, feed_url in feeds: for feed_id, feed_url in feeds:
self.log.info('Processing [%d] %s', feed_id, feed_url)
feed = self.rss_reader.get_feed(feed_url) feed = self.rss_reader.get_feed(feed_url)
new_items = feed.items new_items = feed.items
old_items_urls = self.database.find_feed_items_urls(feed_id) old_items_urls = self.database.find_feed_items_urls(feed_id)
@ -31,13 +41,20 @@ class UpdateManager:
def __calculate_difference(self, new_items: list[FeedItem], old_items_urls: list[str]) -> list[FeedItem]: def __calculate_difference(self, new_items: list[FeedItem], old_items_urls: list[str]) -> list[FeedItem]:
"""Calculate new feed items.""" """Calculate new feed items."""
self.log.debug(
'__calculate_difference(new_items=list(%d), old_items_urls=list(%d))', len(new_items), len(old_items_urls)
)
if not old_items_urls: if not old_items_urls:
self.log.debug('Old items are empty, returning new')
return new_items return new_items
diff = [] diff = []
self.log.debug('Comparing %d new items with %d old', len(new_items), len(old_items_urls))
for item in new_items: for item in new_items:
if item.url not in old_items_urls: if item.url not in old_items_urls:
diff.append(item) diff.append(item)
self.log.debug('%d updates found', len(diff))
return diff return diff