#!/usr/bin/env python
import os

from django.conf import settings
import oscar


def configure():
    if not settings.configured:
        from oscar.defaults import OSCAR_SETTINGS

        # Helper function to extract absolute path
        location = lambda x: os.path.join(
            os.path.dirname(os.path.realpath(__file__)), x)

        test_settings = OSCAR_SETTINGS.copy()
        test_settings.update({
            'DATABASES': {
                'default': {
                    'ENGINE': 'django.db.backends.sqlite3',
                    'NAME': ':memory:',
                },
            },
            'INSTALLED_APPS': [
                'django.contrib.auth',
                'django.contrib.admin',
                'django.contrib.contenttypes',
                'django.contrib.sessions',
                'django.contrib.sites',
                'django.contrib.flatpages',
                'django.contrib.staticfiles',
                'compressor',
                'widget_tweaks',
                'tests._site.model_tests_app',  # contains models we need for testing
                'tests._site.myauth',

                # Use a custom partner app to test overriding models.  I can't
                # find a way of doing this on a per-test basis, so I'm using a
                # global change.
            ] + oscar.get_core_apps([
                'tests._site.apps.partner',
                'tests._site.apps.customer']),
            'AUTH_USER_MODEL': 'myauth.User',
            'TEMPLATE_CONTEXT_PROCESSORS': (
                "django.contrib.auth.context_processors.auth",
                "django.core.context_processors.request",
                "django.core.context_processors.debug",
                "django.core.context_processors.i18n",
                "django.core.context_processors.media",
                "django.core.context_processors.static",
                "django.contrib.messages.context_processors.messages",
                'oscar.apps.search.context_processors.search_form',
                'oscar.apps.customer.notifications.context_processors.notifications',
                'oscar.apps.promotions.context_processors.promotions',
                'oscar.apps.checkout.context_processors.checkout',
                'oscar.core.context_processors.metadata',
            ),
            'TEMPLATE_DIRS': (
                location('_site/templates'),
                oscar.OSCAR_MAIN_TEMPLATE_DIR,
            ),
            'TEMPLATE_LOADERS': (
                ('django.template.loaders.cached.Loader',
                 ['django.template.loaders.filesystem.Loader',
                  'django.template.loaders.app_directories.Loader',
                  'django.template.loaders.eggs.Loader']),),
            'MIDDLEWARE_CLASSES': (
                'django.middleware.common.CommonMiddleware',
                'django.contrib.sessions.middleware.SessionMiddleware',
                'django.middleware.csrf.CsrfViewMiddleware',
                'django.contrib.auth.middleware.AuthenticationMiddleware',
                'django.contrib.messages.middleware.MessageMiddleware',
                'oscar.apps.basket.middleware.BasketMiddleware',
            ),
            'AUTHENTICATION_BACKENDS': (
                'oscar.apps.customer.auth_backends.EmailBackend',
                'django.contrib.auth.backends.ModelBackend',
            ),
            'HAYSTACK_CONNECTIONS': {
                'default': {
                    'ENGINE': 'haystack.backends.simple_backend.SimpleEngine',
                }
            },
            'PASSWORD_HASHERS': ['django.contrib.auth.hashers.MD5PasswordHasher'],
            'ROOT_URLCONF': 'tests._site.urls',
            'LOGIN_REDIRECT_URL': '/accounts/',
            'STATIC_URL': '/static/',
            'COMPRESS_ENABLED': False,
            'COMPRESS_ROOT': '',  # needed to avoid issue #1214
            'DEBUG': False,
            'SITE_ID': 1,
            'USE_TZ': 1,
            'APPEND_SLASH': True,
            'DDF_DEFAULT_DATA_FIXTURE': 'tests.dynamic_fixtures.OscarDynamicDataFixtureClass',
            'SESSION_SERIALIZER': 'django.contrib.sessions.serializers.JSONSerializer',

            # temporary workaround for issue in sorl-thumbnail in Python 3
            # https://github.com/mariocesar/sorl-thumbnail/pull/254
            'THUMBNAIL_DEBUG': False,

            'OSCAR_INITIAL_ORDER_STATUS': 'A',
            'OSCAR_ORDER_STATUS_PIPELINE': {'A': ('B',), 'B': ()},
            'OSCAR_INITIAL_LINE_STATUS': 'a',
            'OSCAR_LINE_STATUS_PIPELINE': {'a': ('b', ), 'b': ()},

            # Setting this explicitly prevents Django 1.7+ from showing a
            # warning regarding a changed default test runner. The Oscar test
            # suite is run with nose, so it does not matter.
            'SILENCED_SYSTEM_CHECKS': ['1_6.W001'],
        })

        settings.configure(**test_settings)


# It can sometimes be useful to be able to drop into the configured Django
# environment of the test suite. It might e.g. be useful to drop into the
# shell with ./config.py shell_plus or create missing migrations with
# ./config.py makemigrations

if __name__ == '__main__':
    import sys
    import django
    from django.core.management import call_command
    args = sys.argv[1:]

    if args:
        configure()  # configure Django settings
        django.setup()  # initialise app registry for Django 1.7+
        call_command(*args)