magicbotd

#!/usr/bin/env python3

import sys

import src.utils.consts


if sys.version_info < (3, 6):
    sys.stderr.write("MagicBot requires python 3.6.0 or later\n")
    sys.exit(src.utils.consts.Exit.WRONGVERSION)

import atexit
import argparse
import faulthandler
import os
import platform
import typing
from src import Cache, Config, Control, Database, EventManager, Exports, IRCBot
from src import LockFile, ModuleManager, Timers, utils
from src.Logging import Logger as log


faulthandler.enable()

directory = os.path.dirname(os.path.realpath(__file__))
home = os.path.expanduser("~")
default_data = os.path.join(home, ".magicbot-stable")

arg_parser = argparse.ArgumentParser(
    description="Python3 event-driven modular IRC bot")

arg_parser.add_argument("--version", "-v", action="store_true")

arg_parser.add_argument(
    "--config",
    "-c",
    help="Location of config file",
    default=os.path.join(default_data, "bot.conf"),
)

arg_parser.add_argument(
    "--add-server", "-a", help="Add a new server", action="store_true"
)

arg_parser.add_argument("--verbose", "-V", action="store_true")
arg_parser.add_argument("--log-level", "-L")
arg_parser.add_argument("--no-logging", "-N", action="store_true")

arg_parser.add_argument("--external", "-e", help="External modules directory")

arg_parser.add_argument(
    "--startup-disconnects",
    "-D",
    help="Tolerate failed connections on startup",
    action="store_true",
)

arg_parser.add_argument("--remove-server", "-R",
                        help="Remove a server by it's alias")

args = arg_parser.parse_args()

if args.version:
    print("MagicBot %s" % IRCBot.VERSION)

config = Config.Config("bot", args.config)
config.load()

DATA_DIR = os.path.expanduser(config.get(
    "data-directory", "~/.magicbot-stable"))
LOG_DIR = config.get("log-directory", "{DATA}/logs/").format(DATA=DATA_DIR)
DATABASE = config.get(
    "database", "sqlite3:{DATA}/bot.db").format(DATA=DATA_DIR)
LOCK_FILE = config.get("lock-file", "{DATA}/bot.lock").format(DATA=DATA_DIR)
SOCK_FILE = config.get("sock-file", "{DATA}/bot.sock").format(DATA=DATA_DIR)

if not os.path.isdir(LOG_DIR):
    os.mkdir(LOG_DIR)

log_level = args.log_level
if not log_level:
    log_level = "DEBUG" if args.verbose else "INFO"

log_level_files = config.get("log-levels", "TRACE,INFO,WARN").split(",")

# log = log.info(not args.no_logging, log_level, LOG_DIR, log_level_files)

startup_info = "Starting MagicBot %s (Running on Python v%s, db %s)" % (
    IRCBot.VERSION,
    platform.python_version(),
    DATABASE,
)

log = log(log_level)
log.info(message=startup_info, server="Startup",
         context="Server", formatting=True)

lock_file = LockFile.LockFile(LOCK_FILE)
if not lock_file.available():
    log.critical("Database is locked. Is MagicBot already running?")
    sys.exit(utils.consts.Exit.LOCKED)

atexit.register(lock_file.unlock)
lock_file.lock()

database = Database.Database(log, DATABASE)

if args.remove_server:
    alias = args.remove_server
    srv_id = database.servers.by_alias(alias)
    if not srv_id is None:
        database.servers.delete(typing.cast(int, srv_id))
        print("Deleted server '%s'" % alias)
    else:
        sys.stderr.write("Unknown server '%s'\n" % alias)
    sys.exit(0)


def _add_server():
    details = utils.cli.add_server()

    database.servers.add(
        details.alias,
        details.hostname,
        details.port,
        details.password,
        details.tls,
        details.bindhost,
        details.nickname,
        details.username,
        details.realname,
        True,
    )


if args.add_server:
    print("Adding a new server")
    _add_server()
    sys.exit(0)

cache = Cache.Cache()
events = EventManager.EventRoot(log).wrap()
exports = Exports.Exports()
timers = Timers.Timers(database, events, log)

core_modules = os.path.join(directory, "src", "core_modules")
extra_modules = [os.path.join(directory, "modules")]
if args.external:
    extra_modules.append(os.path.abspath(args.external))
if "external-modules" in config:
    extra_modules.append(os.path.abspath(config["external-modules"]))

modules = ModuleManager.ModuleManager(
    events, exports, timers, config, log, core_modules, extra_modules
)

bot = IRCBot.Bot(
    directory,
    DATA_DIR,
    args,
    cache,
    config,
    database,
    events,
    exports,
    log,
    modules,
    timers,
)
bot.add_poll_hook(cache)
bot.add_poll_hook(lock_file)
bot.add_poll_hook(timers)

control = Control.Control(bot, SOCK_FILE)
control.bind()
bot.add_poll_source(control)

server_configs = bot.database.servers.get_all()

if len(server_configs):
    bot.load_modules()

    servers = []
    for server_id, alias in server_configs:
        server = bot.add_server(server_id, connect=False)
        if not server is None and server.get_setting("connect", True):
            server.from_init = True
            servers.append(server)

    bot.get_events().on("boot.done").call()

    timers.setup(bot.find_settings(prefix="timer-"))

    for server in servers:
        if not bot.connect(server):
            log.error("Failed to connect to '%s'" % (str(server)))
            if not args.startup_disconnects:
                sys.exit(utils.consts.Exit.DISCONNECT)

    try:
        bot.run()
    except Exception as e:
        log.critical("Unhandled exception: %s" % str(e).replace("<", "\<"))
        sys.exit(utils.consts.Exit.FATAL)
else:
    try:
        if utils.cli.bool_input("no servers found, add one?"):
            _add_server()
    except KeyboardInterrupt:
        print()
        pass