# Copyright (c) Peter Pentchev <roam@ringlet.net>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
"""Common utilities for the check-build library."""

import logging
import sys


def build_logger(*, verbose: bool) -> logging.Logger:
    """Build a logger that outputs messages to the standard output stream."""
    logger = logging.getLogger()
    logger.setLevel(logging.DEBUG)

    stdout_handler = logging.StreamHandler(stream=sys.stdout)
    stdout_handler.addFilter(lambda record: record.levelno == logging.INFO)
    stdout_handler.setLevel(logging.INFO)
    logger.addHandler(stdout_handler)

    stderr_handler = logging.StreamHandler(stream=sys.stderr)
    if verbose:
        stderr_handler.addFilter(lambda record: record.levelno != logging.INFO)
        stderr_handler.setLevel(logging.DEBUG)
    else:
        stderr_handler.setLevel(logging.WARNING)
    logger.addHandler(stderr_handler)

    return logger