"""
Two things are wrong with Django's default `SECRET_KEY` system:
1. It is not random but pseudo-random
2. It saves and displays the SECRET_KEY in `settings.py`
This snippet
1. uses `SystemRandom()` instead to generate a random key
2. saves a local `secret.txt`
The result is a random and safely hidden `SECRET_KEY`.
"""
try:
    SECRET_KEY
except NameError as ne:
    import os
    from eshop_project.settings.base import BASE_DIR
    SECRET_FILE = os.path.join(BASE_DIR, 'secret.txt')
    try:
        SECRET_KEY = open(SECRET_FILE).read().strip()
    except IOError:
        try:
            import random
            SECRET_KEY = ''.join([random.SystemRandom().choice('abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)') for i in range(50)])
            with open(SECRET_FILE,'w') as f:
                f.write(SECRET_KEY)
        except IOError:
            Exception('Please create a %s file with random characters \
            to generate your secret key!' % SECRET_FILE)