#!/usr/bin/env python3

import asyncio
import sys
import threading

import telethon
import yaml

import pgbotlib.dbstuff
import pgbotlib.commands
import pgbotlib.cron
import pgbotlib.misc
import pgbotlib.response


def init(args: list) -> tuple:
    conf_path = args[0] if args else 'config.yml'
    try:
        with open(conf_path, 'r', encoding='utf-8') as data:
            config = yaml.safe_load(data.read())
    except FileNotFoundError as err:
        sys.exit(err)

    client = telethon.TelegramClient(
            'bot_session', config['api_id'],
            config['api_hash']).start(bot_token=config['bot_token'])

    db_conn = pgbotlib.dbstuff.DBConn(config['db_spec'])

    return config, db_conn, client


def main():
    config, db_conn, client = init(sys.argv[1:])

    namegen = pgbotlib.misc.NameGenerator(config, db_conn)
    responder = pgbotlib.response.Responder(config, client, db_conn, namegen)
    commander = pgbotlib.commands.Commander(config, client, config['admins'],
                                            db_conn, namegen, responder)

    @client.on(telethon.events.NewMessage())
    async def handle_new_message(event):
        if event.message.text.startswith('.'):
            await commander.action(event)
        else:
            await responder.respond(event)

    cron = pgbotlib.cron.Cron(config, client, responder)
    cron.plan()
    loop = asyncio.get_event_loop()
    loop.run_forever()


if __name__ == '__main__':
    print("Starting pgbot...")
    main()