# coding=utf-8

"""Helpers for settings."""
import os

# Absolute filesystem path to the Django project directory:
DJANGO_ROOT = os.path.dirname(
    os.path.dirname(
        os.path.dirname(os.path.abspath(__file__))
    ))


def absolute_path(*args):
    """Get an absolute path for a file that is relative to the django root.

    :param args: List of path elements.
    :type args: list

    :returns: An absolute path.
    :rtype: str
    """
    return os.path.join(DJANGO_ROOT, *args)


def ensure_secret_key_file():
    """Checks that secret.py exists in settings dir.

    If not, creates one with a random generated SECRET_KEY setting."""
    secret_path = absolute_path('core', 'settings', 'secret.py')
    if not os.path.exists(secret_path):
        from django.utils.crypto import get_random_string
        secret_key = get_random_string(
            50, 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)')
        disqus_shortname = get_random_string(
            50, 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)')
        with open(secret_path, 'w') as f:
            f.write("SECRET_KEY = " + repr(secret_key) + "\n")
            f.write("DISQUS_WEBSITE_SHORTNAME = "
                    + repr(disqus_shortname) + "\n")
            f.write("COMMENTS_DISQUS_API_SECRET_KEY = ''" + "\n")
            f.write("COMMENTS_DISQUS_API_PUBLIC_KEY = ''" + "\n")
            f.write("COMMENTS_DISQUS_SHORTNAME = ''" + "\n")
            f.write("SENTRY_DSN = ''" + "\n")
            f.write("SOCIAL_AUTH_GITHUB_KEY = ''" + "\n")
            f.write("SOCIAL_AUTH_GITHUB_SECRET = ''" + "\n")


# Import the secret key
ensure_secret_key_file()