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greed/core.py

231 lines
11 KiB
Python

import logging
import os
import sys
import threading
import sqlalchemy
import sqlalchemy.ext.declarative as sed
import sqlalchemy.orm
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)
# If the config file does not exist, clone the template and exit
if not os.path.isfile("config/config.toml"):
log.debug("config/config.toml does not exist.")
with open("config/template_config.toml", encoding="utf8") as template_cfg_file, \
open("config/config.toml", "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 in config/config.toml."
" 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/config.toml", 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.toml 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")
# Create the database engine
log.debug("Creating the sqlalchemy engine...")
engine = sqlalchemy.create_engine(user_cfg["Database"]["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": <Worker>}
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()