"""Logging config and utility functions."""

import logging
import logging.config


class StdoutFilter(logging.Filter):
    """Stdout filter."""

    def filter(self, rec):
        """Filter out everything > INFO."""
        return rec.levelno <= logging.INFO


config = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
        },
        'simple': {
            'format': '%(levelname)s %(message)s'
        },
    },
    'filters': {
        'stdout_filter': {
            '()': StdoutFilter
        }
    },
    'handlers': {
        'console_out': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'formatter': 'verbose',
            'stream': 'ext://sys.stdout',
            'filters': ['stdout_filter']
        },
        'console_err': {
            'level': 'WARNING',
            'class': 'logging.StreamHandler',
            'formatter': 'verbose',
            'stream': 'ext://sys.stderr'
        },
    },
    'loggers': {
        '': {
            'handlers': ['console_out', 'console_err'],
            'level': 'INFO',
            'filters': [],
            'propogate': True
        }
    }
}


def init_logging():
    """Init logging."""
    logging.config.dictConfig(config)