from django.core.exceptions import ImproperlyConfigured
from django.conf import settings

MEDIA_URL = getattr(settings, 'COMPRESS_URL', settings.MEDIA_URL)
if not MEDIA_URL.endswith('/'):
    raise ImproperlyConfigured(
        'The MEDIA_URL and COMPRESS_URL settings must have a trailing slash.')

MEDIA_ROOT = getattr(settings, 'COMPRESS_ROOT', settings.MEDIA_ROOT)
OUTPUT_DIR = getattr(settings, 'COMPRESS_OUTPUT_DIR', 'CACHE')
STORAGE = getattr(settings, 'COMPRESS_STORAGE', 'compressor.storage.CompressorFileStorage')

COMPRESS = getattr(settings, 'COMPRESS', not settings.DEBUG)
COMPRESS_OFFLINE = getattr(settings, 'COMPRESS_OFFLINE', False)
COMPRESS_CSS_FILTERS = getattr(settings, 'COMPRESS_CSS_FILTERS', ['compressor.filters.css_default.CssAbsoluteFilter'])
COMPRESS_JS_FILTERS = getattr(settings, 'COMPRESS_JS_FILTERS', ['compressor.filters.jsmin.JSMinFilter'])

COMPRESS_LESSC_BINARY = LESSC_BINARY = getattr(settings, 'COMPRESS_LESSC_BINARY', 'lessc')

CLOSURE_COMPILER_BINARY = getattr(settings, 'COMPRESS_CLOSURE_COMPILER_BINARY', 'java -jar compiler.jar')
CLOSURE_COMPILER_ARGUMENTS = getattr(settings, 'COMPRESS_CLOSURE_COMPILER_ARGUMENTS', '')

CSSTIDY_BINARY = getattr(settings, 'CSSTIDY_BINARY',
    getattr(settings, 'COMPRESS_CSSTIDY_BINARY', 'csstidy'))
CSSTIDY_ARGUMENTS = getattr(settings, 'CSSTIDY_ARGUMENTS',
    getattr(settings, 'COMPRESS_CSSTIDY_ARGUMENTS', '--template=highest'))

YUI_BINARY = getattr(settings, 'COMPRESS_YUI_BINARY', 'java -jar yuicompressor.jar')
YUI_CSS_ARGUMENTS = getattr(settings, 'COMPRESS_YUI_CSS_ARGUMENTS', '')
YUI_JS_ARGUMENTS = getattr(settings, 'COMPRESS_YUI_JS_ARGUMENTS', '')

TEMPLATE_LOADERS = getattr(settings,
                           "COMPRESS_TEMPLATE_LOADERS",
                           getattr(settings, "TEMPLATE_LOADERS", ())
)

TEMPLATE_GLOB = getattr(settings, "COMPRESS_TEMPLATE_GLOB", ('*.html', '*.htm', '*.txt'))

if COMPRESS_CSS_FILTERS is None:
    COMPRESS_CSS_FILTERS = []

if COMPRESS_JS_FILTERS is None:
    COMPRESS_JS_FILTERS = []

DATA_URI_MIN_SIZE = getattr(settings, 'COMPRESS_DATA_URI_MIN_SIZE', 1024)

# rebuilds the cache every 30 days if nothing has changed.
REBUILD_TIMEOUT = getattr(settings, 'COMPRESS_REBUILD_TIMEOUT', 2592000) # 30 days

OFFLINE_TIMEOUT = getattr(settings, 'COMPRESS_OFFLINE_TIMEOUT', 60 * 60 * 24 * 30) # 30 days

# the upper bound on how long any compression should take to be generated
# (used against dog piling, should be a lot smaller than REBUILD_TIMEOUT
MINT_DELAY = getattr(settings, 'COMPRESS_MINT_DELAY', 30) # 30 seconds

# check for file changes only after a delay (in seconds, disabled by default)
MTIME_DELAY = getattr(settings, 'COMPRESS_MTIME_DELAY', None)

# the backend to use when parsing the JavaScript or Stylesheet files
PARSER = getattr(settings, 'COMPRESS_PARSER', 'compressor.parser.BeautifulSoupParser')

# Allows changing verbosity from the settings.
VERBOSE = getattr(settings, "COMPRESS_VERBOSE", False)

# the cache backend to use
CACHE_BACKEND = getattr(settings, 'COMPRESS_CACHE_BACKEND', None)
if CACHE_BACKEND is None:
    # If we are on Django 1.3 AND using the new CACHES setting...
    if getattr(settings, "CACHES", None):
        CACHE_BACKEND = "default"
    else:
        # fallback for people still using the old CACHE_BACKEND setting
        CACHE_BACKEND = settings.CACHE_BACKEND