#!/usr/bin/env python3
"""
Main Freqtrade bot script.
Read the documentation to know what cli arguments you need.
"""

import logging
import sys
from typing import List

from freqtrade import (__version__)
from freqtrade.arguments import Arguments
from freqtrade.configuration import Configuration
from freqtrade.freqtradebot import FreqtradeBot
from freqtrade.logger import Logger

logger = Logger(name='freqtrade').get_logger()


def main(sysargv: List[str]) -> None:
    """
    This function will initiate the bot and start the trading loop.
    :return: None
    """
    arguments = Arguments(
        sysargv,
        'Simple High Frequency Trading Bot for crypto currencies'
    )
    args = arguments.get_parsed_arg()

    # A subcommand has been issued.
    # Means if Backtesting or Hyperopt have been called we exit the bot
    if hasattr(args, 'func'):
        args.func(args)
        return 0

    logger.info(
        'Starting freqtrade %s (loglevel=%s)',
        __version__,
        logging.getLevelName(args.loglevel)
    )

    try:
        # Load and validate configuration
        configuration = Configuration(args)

        # Init the bot
        freqtrade = FreqtradeBot(configuration.get_config())

        state = None
        while 1:
            state = freqtrade.worker(old_state=state)

    except KeyboardInterrupt:
        logger.info('SIGINT received, aborting ...')
    except BaseException:
        logger.exception('Fatal exception!')
    finally:
        freqtrade.clean()
        sys.exit(0)


def set_loggers() -> None:
    """
    Set the logger level for Third party libs
    :return: None
    """
    logging.getLogger('requests.packages.urllib3').setLevel(logging.INFO)
    logging.getLogger('telegram').setLevel(logging.INFO)


if __name__ == '__main__':
    set_loggers()
    main(sys.argv[1:])