import os.path
import yaml


NAME = 'phi'

CONFIG_FILE = 'config.yml'
CONFIG_PATHS = ['./',
                '~/.config/' + NAME + '/',
                '/usr/local/etc/' + NAME + '/',
                '/etc/' + NAME + '/']
CONFIG_FILES = [os.path.join(p, CONFIG_FILE)
                for p in CONFIG_PATHS]


def get_config():
    """Return the path of the found configuration file and its content

    :returns: (path, config)
    :rtype: (str, dict)
    """
    for f in CONFIG_FILES:
        try:
            with open(f, 'r') as c:
                config = yaml.safe_load(c)
                return (f, config)
        except FileNotFoundError:
            # Skip to the next file.
            # We only care if the file is preset but it's not
            # accessible or if the file is not present at all
            # in any of CONFIG_PATHS.
            pass
    else:
        raise FileNotFoundError("Could not find {} in any of {}."
                                .format(CONFIG_FILE, ', '.join(CONFIG_PATHS)))