import random

from django.conf import settings


def cache_settings(request):
    """
    Pass cache settings to the template context.
    Applies jitter to the timeouts.
    """
    jitter = settings.CACHE_JITTER
    return {
        "CACHE_SHORT_TIMEOUT": settings.CACHE_SHORT_TIMEOUT
        + random.randint(-jitter, jitter),
        "CACHE_MEDIUM_TIMEOUT": settings.CACHE_MEDIUM_TIMEOUT
        + random.randint(-jitter, jitter),
        "CACHE_LONG_TIMEOUT": settings.CACHE_LONG_TIMEOUT
        + random.randint(-jitter, jitter),
        "CACHE_DEFAULT_TIMEOUT": settings.CACHE_DEFAULT_TIMEOUT
        + random.randint(-jitter, jitter),
    }


def version_info(request):
    return {
        "VERSION": settings.VERSION,
        "VERSION_INFO": settings.VERSION_INFO,
    }