import logging
import sys

enabled = []
disabled = ["init", "sdp", "parsers", "evaluators", "verbose"]

console_handler = logging.StreamHandler(sys.stdout)

all_loggers = {}


def set_enabled(to_enable):
    if to_enable is None:
        return

    if not hasattr(to_enable, "__iter__"):
        to_enable = [to_enable]

    enabled.extend(to_enable)


def to_discard(logger_class):
    if logger_class in enabled:
        return False

    if logger_class not in disabled:
        return False

    return True


def get_logger(logger_name):
    if logger_name in all_loggers:
        return all_loggers[logger_name]

    logger = logging.getLogger(logger_name)
    all_loggers[logger_name] = logger

    for d in disabled:
        if logger_name.startswith(d + ".") and to_discard(d):
            logger.disabled = True

    for e in enabled:
        if logger_name.startswith("verbose." + e):
            logger.disabled = False

    return logger