"""
Miscelaneous functions useful in at least two places unrelated to each other
"""
import subprocess
import logging


# Copied into bootstrap/bootstrap.py. Make sure these two copies are exactly the same!
def run_subprocess(cmd, *args, **kwargs):
    """
    Run given cmd with smart output behavior.

    If command succeeds, print output to debug logging.
    If it fails, print output to info logging.

    In TLJH, this sends successful output to the installer log,
    and failed output directly to the user's screen
    """
    logger = logging.getLogger('tljh')
    proc = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, *args, **kwargs)
    printable_command = ' '.join(cmd)
    if proc.returncode != 0:
        # Our process failed! Show output to the user
        logger.error(proc.stdout.decode())
        e = Exception( 'command {command} failed with return code {code}'.format(
            printable_command, proc.returncode
        ))
        logger.exception(e)
        raise e
    else:
        # This goes into installer.log
        logger.debug('Ran {command} with exit code {code}'.format(
            command=printable_command, code=proc.returncode
        ))
        # This produces multi line log output, unfortunately. Not sure how to fix.
        # For now, prioritizing human readability over machine readability.
        logger.debug(proc.stdout.decode())