import importlib import json import os import time from pathlib import Path import irc.client from irc.client import NickMask from edmond.log import Logger class Bot(irc.client.SimpleIRCClient, Logger): CHANNELS_RUNTIME_KEY = "_channels" def __init__(self, config, logger): super().__init__() self.config = config self.logger = logger self.plugins = [] self.values = {} self.storage = self.__get_storage() @property def nick(self): """Nickname validated by the server, or the configured nick.""" if self.connection.is_connected(): return self.connection.get_nickname() return self.config["nick"] @property def names(self): """Collection of names the bot should identify with.""" return (self.nick, *self.config["alternative_nicks"]) @property def channels(self): """List of joined channels.""" if self.CHANNELS_RUNTIME_KEY not in self.values: self.values[self.CHANNELS_RUNTIME_KEY] = [] return self.values[self.CHANNELS_RUNTIME_KEY] def __get_storage(self): """Load data from storage.""" try: with open(self.config["storage_file"], "rt") as storage_file: storage = json.load(storage_file) self.log_d("Loaded storage file.") return storage except (OSError, json.decoder.JSONDecodeError) as exc: self.log_e(f"Could not load storage file: {exc}") self.log_w("If it's not the first time Edm0nd is run, you may lose" " data when closing the program.") return {} def __save_storage(self): """Save storage data to disk.""" try: with open(self.config["storage_file"], "wt") as storage_file: json.dump(self.storage, storage_file, indent=2, sort_keys=True) self.log_d("Saved storage file.") except (OSError, json.decoder.JSONEncodeError) as exc: self.log_e(f"Could not save storage file: {exc}") def on_welcome(self, connection, event): """Handle a successful connection to a server.""" self.log_i(f"Connected to server {event.source}.") self.run_plugin_callbacks(event) for channel in self.config["channels"]: connection.join(channel) def on_join(self, connection, event): """Handle someone, possibly the bot, joining a channel.""" if event.source.nick == self.nick: self.log_i(f"Joined {event.target}.") self.channels.append(event.target) self.run_plugin_callbacks(event) def on_part(self, connection, event): """Handle someone, possibly the bot, leaving a channel.""" if event.source.nick == self.nick: self.log_i(f"Left {event.target} (args: {event.arguments[0]}).") self.channels.remove(event.target) self.run_plugin_callbacks(event) def on_pubmsg(self, connection, event): """Handle a message received in a channel.""" channel = event.target nick = NickMask(event.source).nick message = event.arguments[0] self.log_d(f"Message in {channel} from {nick}: {message}") self.run_plugin_callbacks(event) def on_privmsg(self, connection, event): """Handle a message received privately.""" nick = NickMask(event.source).nick target = event.target message = event.arguments[0] self.log_d(f"Private message from {nick} to {target}: {message}") self.run_plugin_callbacks(event) def on_ping(self, connection, event): """Handle a ping; can be used as a random event timer.""" self.log_d(f"Received ping from {event.target}.") self.run_plugin_callbacks(event) def run(self): """Connect the bot to server, join channels and start responding.""" self.log_i("Starting Edmond.") self.load_plugins() self.log_i("Connecting to server.") self.connect(self.config["host"], self.config["port"], self.nick) try: self.start() except KeyboardInterrupt: self.log_i("Caught keyboard interrupt.") finally: self.log_i("Stopping Edmond.") self.__save_storage() def load_plugins(self): """Load all installed plugins.""" self.log_i("Loading plugins.") plugin_files = os.listdir(Path(__file__).parent / "plugins") plugin_names = map( lambda f: os.path.splitext(f)[0], filter(lambda f: f.endswith(".py"), plugin_files) ) for plugin_name in plugin_names: module = importlib.import_module(f"edmond.plugins.{plugin_name}") are_dependencies_ok = getattr(module, "DEPENDENCIES_FOUND", True) if not are_dependencies_ok: self.log_e(f"Dependencies not found for plugin {plugin_name}.") continue # Get plugin class name from its module name. class_name = "".join(map( lambda w: w.capitalize(), plugin_name.split("_") )) + "Plugin" plugin_class = getattr(module, class_name) self.plugins.append(plugin_class(self)) self.values[plugin_name] = {} self.log_d(f"Loaded {class_name}.") def get_plugin(self, name): """Get a loaded plugin by its name (e.g. 'mood'), or None.""" return next(filter(lambda p: p.name == name, self.plugins), None) def say(self, target, message): """Send message to target after a slight delay.""" message = message.replace("\n", " ").replace("\r", " ") time.sleep(self.config["speak_delay"]) self.log_d(f"Sending to {target}: {message}") try: if message.startswith("/me "): self.connection.action(target, message[4:]) else: self.connection.privmsg(target, message) except irc.client.MessageTooLong: self.log_e("Could not send, message is too long.") def run_plugin_callbacks(self, event): """Run appropriate callbacks for each plugin.""" etype = event.type plugins = filter(lambda p: p.is_ready, self.plugins) plugins = sorted(plugins, key=lambda p: p.priority, reverse=True) for plugin in plugins: callbacks = plugin.callbacks if etype not in callbacks: continue if callbacks[etype](event): break