import logging import os, sys import threading import sqlalchemy import sqlalchemy.ext.declarative as sed import telegram import database import duckbot import localization import nuconfig import worker try: import coloredlogs except ImportError: coloredlogs = None def main(): """The core code of the program. Should be run only in the main process!""" # Rename the main thread for presentation purposes threading.current_thread().name = "Core" # Start logging setup log = logging.getLogger("core") logging.root.setLevel("INFO") log.debug("Set logging level to INFO while the config is being loaded") # Ensure the template config file exists if not os.path.isfile("config/template_config.toml"): log.fatal("config/template_config.toml does not exist!") exit(254) # Check where the config path is located from the CONFIG_PATH environment variable config_path = os.environ.get("CONFIG_PATH", "config/config.toml") # If the config file does not exist, clone the template and exit if not os.path.isfile(config_path): log.debug("config/config.toml does not exist.") with open("config/template_config.toml", encoding="utf8") as template_cfg_file, \ open(config_path, "w", encoding="utf8") as user_cfg_file: # Copy the template file to the config file user_cfg_file.write(template_cfg_file.read()) log.fatal("A config file has been created." " Customize it, then restart greed!") exit(1) # Compare the template config with the user-made one with open("config/template_config.toml", encoding="utf8") as template_cfg_file, \ open(config_path, encoding="utf8") as user_cfg_file: template_cfg = nuconfig.NuConfig(template_cfg_file) user_cfg = nuconfig.NuConfig(user_cfg_file) if not template_cfg.cmplog(user_cfg): log.fatal("There were errors while parsing the config file. Please fix them and restart greed!") exit(2) else: log.debug("Configuration parsed successfully!") # Finish logging setup logging.root.setLevel(user_cfg["Logging"]["level"]) stream_handler = logging.StreamHandler() if coloredlogs is not None: stream_handler.formatter = coloredlogs.ColoredFormatter(user_cfg["Logging"]["format"], style="{") else: stream_handler.formatter = logging.Formatter(user_cfg["Logging"]["format"], style="{") logging.root.handlers.clear() logging.root.addHandler(stream_handler) log.debug("Logging setup successfully!") # Ignore most python-telegram-bot logs, as they are useless most of the time logging.getLogger("telegram").setLevel("ERROR") # Find the database URI # Through environment variables first if db_engine := os.environ.get("DB_ENGINE"): log.debug("Sqlalchemy engine overridden by the DB_ENGINE envvar.") # Then via the config file else: db_engine = user_cfg["Database"]["engine"] log.debug("Using sqlalchemy engine set in the configuration file.") # Create the database engine log.debug("Creating the sqlalchemy engine...") engine = sqlalchemy.create_engine(db_engine) log.debug("Binding metadata to the engine...") database.TableDeclarativeBase.metadata.bind = engine log.debug("Creating all missing tables...") database.TableDeclarativeBase.metadata.create_all() log.debug("Preparing the tables through deferred reflection...") sed.DeferredReflection.prepare(engine) # Create a bot instance bot = duckbot.factory(user_cfg)(request=telegram.utils.request.Request(user_cfg["Telegram"]["con_pool_size"])) # Test the specified token log.debug("Testing bot token...") me = bot.get_me() if me is None: logging.fatal("The token you have entered in the config file is invalid. Fix it, then restart greed.") sys.exit(1) log.debug("Bot token is valid!") # Finding default language default_language = user_cfg["Language"]["default_language"] # Creating localization object default_loc = localization.Localization(language=default_language, fallback=default_language) # Create a dictionary linking the chat ids to the Worker objects # {"1234": } chat_workers = {} # Current update offset; if None it will get the last 100 unparsed messages next_update = None # Notify on the console that the bot is starting log.info(f"@{me.username} is starting!") # Main loop of the program while True: # Get a new batch of 100 updates and mark the last 100 parsed as read update_timeout = user_cfg["Telegram"]["long_polling_timeout"] log.debug(f"Getting updates from Telegram with a timeout of {update_timeout} seconds") updates = bot.get_updates(offset=next_update, timeout=update_timeout) # Parse all the updates for update in updates: # If the update is a message... if update.message is not None: # Ensure the message has been sent in a private chat if update.message.chat.type != "private": log.debug(f"Received a message from a non-private chat: {update.message.chat.id}") # Notify the chat bot.send_message(update.message.chat.id, default_loc.get("error_nonprivate_chat")) # Skip the update continue # If the message is a start command... if isinstance(update.message.text, str) and update.message.text.startswith("/start"): log.info(f"Received /start from: {update.message.chat.id}") # Check if a worker already exists for that chat old_worker = chat_workers.get(update.message.chat.id) # If it exists, gracefully stop the worker if old_worker: log.debug(f"Received request to stop {old_worker.name}") old_worker.stop("request") # Initialize a new worker for the chat new_worker = worker.Worker(bot=bot, chat=update.message.chat, telegram_user=update.message.from_user, cfg=user_cfg, engine=engine, daemon=True) # Start the worker log.debug(f"Starting {new_worker.name}") new_worker.start() # Store the worker in the dictionary chat_workers[update.message.chat.id] = new_worker # Skip the update continue # Otherwise, forward the update to the corresponding worker receiving_worker = chat_workers.get(update.message.chat.id) # Ensure a worker exists for the chat and is alive if receiving_worker is None: log.debug(f"Received a message in a chat without worker: {update.message.chat.id}") # Suggest that the user restarts the chat with /start bot.send_message(update.message.chat.id, default_loc.get("error_no_worker_for_chat"), reply_markup=telegram.ReplyKeyboardRemove()) # Skip the update continue # If the worker is not ready... if not receiving_worker.is_ready(): log.debug(f"Received a message in a chat where the worker wasn't ready yet: {update.message.chat.id}") # Suggest that the user restarts the chat with /start bot.send_message(update.message.chat.id, default_loc.get("error_worker_not_ready"), reply_markup=telegram.ReplyKeyboardRemove()) # Skip the update continue # If the message contains the "Cancel" string defined in the strings file... if update.message.text == receiving_worker.loc.get("menu_cancel"): log.debug(f"Forwarding CancelSignal to {receiving_worker}") # Send a CancelSignal to the worker instead of the update receiving_worker.queue.put(worker.CancelSignal()) else: log.debug(f"Forwarding message to {receiving_worker}") # Forward the update to the worker receiving_worker.queue.put(update) # If the update is a inline keyboard press... if isinstance(update.callback_query, telegram.CallbackQuery): # Forward the update to the corresponding worker receiving_worker = chat_workers.get(update.callback_query.from_user.id) # Ensure a worker exists for the chat if receiving_worker is None: log.debug( f"Received a callback query in a chat without worker: {update.callback_query.from_user.id}") # Suggest that the user restarts the chat with /start bot.send_message(update.callback_query.from_user.id, default_loc.get("error_no_worker_for_chat")) # Skip the update continue # Check if the pressed inline key is a cancel button if update.callback_query.data == "cmd_cancel": log.debug(f"Forwarding CancelSignal to {receiving_worker}") # Forward a CancelSignal to the worker receiving_worker.queue.put(worker.CancelSignal()) # Notify the Telegram client that the inline keyboard press has been received bot.answer_callback_query(update.callback_query.id) else: log.debug(f"Forwarding callback query to {receiving_worker}") # Forward the update to the worker receiving_worker.queue.put(update) # If the update is a precheckoutquery, ensure it hasn't expired before forwarding it if isinstance(update.pre_checkout_query, telegram.PreCheckoutQuery): # Forward the update to the corresponding worker receiving_worker = chat_workers.get(update.pre_checkout_query.from_user.id) # Check if it's the active invoice for this chat if receiving_worker is None or \ update.pre_checkout_query.invoice_payload != receiving_worker.invoice_payload: # Notify the user that the invoice has expired log.debug(f"Received a pre-checkout query for an expired invoice in: {update.pre_checkout_query.from_user.id}") try: bot.answer_pre_checkout_query(update.pre_checkout_query.id, ok=False, error_message=default_loc.get("error_invoice_expired")) except telegram.error.BadRequest: log.error("pre-checkout query expired before an answer could be sent!") # Go to the next update continue log.debug(f"Forwarding pre-checkout query to {receiving_worker}") # Forward the update to the worker receiving_worker.queue.put(update) # If there were any updates... if len(updates): # Mark them as read by increasing the update_offset next_update = updates[-1].update_id + 1 # Run the main function only in the main process if __name__ == "__main__": main()