import logging
import os
import sys

# Check and gracefully fail if the user needs to install a 3rd-party dep.
libnames = ['appdirs', 'configobj', 'colorlog']
def check_env_has_dependencies(libnames):
    rc = True
    for libname in libnames:
        try:
            __import__(libname)
        except ModuleNotFoundError as ex:
            print('missing third-part library: ', ex, file=sys.stderr)
            rc = False
    return rc
if not check_env_has_dependencies(libnames):
    print('refusing to load program without installed dependencies', file=sys.stderr)
    raise ImportError('python environment needs third-party dependencies installed')

# Logger for before the application and logging config is loaded
# - used to log before logging is configured
_log_fmt = '%(levelname)-7s:%(message)s'
_logger_name = 'app_skellington'
_bootstrap_logger = logging.getLogger(_logger_name)
_bootstrap_logger.setLevel(1000)
_bootstrap_logger.propagate = False

# NOTE(MG) Pretty sure the logger has the default handler too at this point.
# It's been related to some issues with the logger double-printing messages.
_bootstrap_logger.addHandler(logging.NullHandler())