import logging
import logging.config
import yaml

APP_ROOT = 'bt-mqtt-gw'
SUPPRESSION_ENABLED = False


def setup():
  with open('logger.yaml', 'rt') as f:
    config = yaml.safe_load(f.read())
    logging.config.dictConfig(config)


def get(name=None):
  if name:
    logger_name = '{}.{}'.format(APP_ROOT, name)
  else:
    logger_name = APP_ROOT
  return logging.getLogger(logger_name)


def enable_debug_formatter():
  logging.getLogger().handlers[0].setFormatter(logging.getLogger('dummy_debug').handlers[0].formatter)


def reset():
  app_level = get().getEffectiveLevel()

  root = logging.getLogger()
  map(root.removeHandler, root.handlers[:])
  map(root.removeFilter, root.filters[:])

  setup()
  get().setLevel(app_level)
  if app_level <= logging.DEBUG:
    enable_debug_formatter()


def suppress_update_failures(suppress):
  global SUPPRESSION_ENABLED
  SUPPRESSION_ENABLED = suppress


def log_exception(logger, message, *args, **kwargs):
  if not ('suppress' in kwargs and kwargs.pop('suppress') and SUPPRESSION_ENABLED):
    if logger.isEnabledFor(logging.DEBUG):
      logger.exception(message, *args, **kwargs)
    elif logger.isEnabledFor(logging.WARNING):
      logger.warning(message, *args, **kwargs)