import json
import logging
import os
import sys

LOG = logging.getLogger(__name__)


def readline_setup():
    import atexit
    import readline

    readline.parse_and_bind('tab:complete')
    histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
    try:
        readline.read_history_file(histfile)
    except IOError:
        pass
    atexit.register(readline.write_history_file, histfile)


def logging_setup(loglevel=logging.INFO):
    logging.basicConfig(
        format='%(asctime)s %(levelname)-5s %(name)s - %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S',
        stream=sys.stderr, level=loglevel)


def interactive_setup(readline=True, loglevel=logging.INFO):
    logging_setup()

    if readline:
        readline_setup()

    config = sys.argv[1]
    LOG.info("Loading configuraition file: %s", config)
    with open(config, 'r') as f:
        return json.load(f)