import logging
import os
import sys

from django.utils.crypto import get_random_string
from envparse import env

BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


def get_secret_key(secret_key):
    if not secret_key:
        return get_random_string(length=50)
    return secret_key


SECRET_KEY = env('SECRET_KEY', preprocessor=get_secret_key, default=None)

DEBUG = env.bool('DJANGO_DEBUG', default=False)

ALLOWED_HOSTS = env('ALLOWED_HOSTS', cast=list, default=['localhost', '127.0.0.1', 'testserver'])

ADMINS = ()

INSTALLED_APPS = [
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'corsheaders',
    'rest_framework',
    'django_filters',
    'ara.api',
    'ara.server.apps.AraAdminConfig',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

CORS_ORIGIN_ALLOW_ALL = True

# Django built-in server and npm development server
CORS_ORIGIN_WHITELIST = (
    '127.0.0.1:8000',
    'localhost:3000',
)

ROOT_URLCONF = 'ara.server.urls'
APPEND_SLASH = False

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'ara.server.wsgi.application'

DATABASES = {
    'default': {
        'ENGINE': env('DATABASE_ENGINE', default='django.db.backends.sqlite3'),
        'NAME': env('DATABASE_NAME', default=os.path.join(BASE_DIR, 'db.sqlite3')),
        'USER': env('DATABASE_USER', default=None),
        'PASSWORD': env('DATABASE_PASSWORD', default=None),
        'HOST': env('DATABASE_HOST', default=None),
        'PORT': env('DATABASE_PORT', default=None),
    }
}

AUTH_PASSWORD_VALIDATORS = [
    {'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator', },
    {'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator', },
    {'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator', },
    {'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator', },
]

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

STATIC_URL = '/static/'

STATIC_ROOT = os.path.join(BASE_DIR, 'www', 'static')

MEDIA_URL = '/media/'

MEDIA_ROOT = os.path.join(BASE_DIR, 'www', 'media')

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'normal': {
            'format': '%(asctime)s %(levelname)s %(name)s: %(message)s'
        }
    },
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'normal',
            'level': env('DJANGO_LOG_LEVEL', default='INFO'),
            'stream': sys.stdout
        }
    },
    'loggers': {
        'ara': {
            'handlers': ['console'],
            'level': env('DJANGO_LOG_LEVEL', default='INFO'),
            'propagate': 0
        }
    },
    'root': {
        'handlers': ['console'],
        'level': env('DJANGO_LOG_LEVEL', default='DEBUG'),
    }
}

REST_FRAMEWORK = {
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
    'PAGE_SIZE': 1000,
    'DEFAULT_FILTER_BACKENDS': (
        'rest_framework.filters.OrderingFilter',
        'rest_framework.filters.SearchFilter',
        'django_filters.rest_framework.DjangoFilterBackend'
    ),
    'DEFAULT_RENDERER_CLASSES': (
        'rest_framework.renderers.JSONRenderer',
        'rest_framework.renderers.BrowsableAPIRenderer',
    ),
    'DEFAULT_PARSER_CLASSES': (
        'rest_framework.parsers.JSONParser',
        'rest_framework.parsers.FormParser',
        'rest_framework.parsers.MultiPartParser',
    ),
    'TEST_REQUEST_DEFAULT_FORMAT': 'json'
}


class DisableMigrations(object):
    def __contains__(self, item):
        return True

    def __getitem__(self, item):
        return None


TESTS_IN_PROGRESS = False
if 'test' in sys.argv[1:] or 'jenkins' in sys.argv[1:]:
    logging.disable(logging.CRITICAL)
    PASSWORD_HASHERS = (
        'django.contrib.auth.hashers.MD5PasswordHasher',
    )
    DEBUG = False
    TEMPLATE_DEBUG = False
    TESTS_IN_PROGRESS = True
    MIGRATION_MODULES = DisableMigrations()

if DEBUG:
    EMAIL_BACKEND = os.getenv('EMAIL_BACKEND', 'django.core.mail.backends.console.EmailBackend')
else:
    EMAIL_BACKEND = os.getenv('EMAIL_BACKEND', 'django.core.mail.backends.smtp.EmailBackend')
DEFAULT_FROM_EMAIL = os.getenv('DEFAULT_FROM_EMAIL', 'gvincent@redhat.com')
EMAIL_HOST = os.getenv('EMAIL_HOST', 'localhost')
EMAIL_HOST_USER = os.getenv('EMAIL_HOST_USER', '')
EMAIL_HOST_PASSWORD = os.getenv('EMAIL_HOST_PASSWORD', '')
EMAIL_PORT = env.int('EMAIL_PORT', default=25)
EMAIL_SUBJECT_PREFIX = os.getenv('EMAIL_SUBJECT_PREFIX', '[Ara] ')
EMAIL_USE_TLS = env.bool('EMAIL_USE_TLS', default=False)
EMAIL_USE_SSL = env.bool('EMAIL_USE_SSL', default=False)