import os
from pathlib import Path
from django.core.exceptions import ImproperlyConfigured

BASE_DIR = Path(__file__).resolve().parent.parent
DEBUG = os.environ.get("LAB_DEBUG", "1") == "1"
SECRET_KEY = os.environ.get("DJANGO_SECRET_KEY", "")
if not SECRET_KEY:
    if not DEBUG:
        raise ImproperlyConfigured("Set DJANGO_SECRET_KEY outside debug mode")
    SECRET_KEY = "local-teaching-only-key-never-use-for-a-deployment-0123456789"
ALLOWED_HOSTS = ["127.0.0.1", "localhost", "testserver"]
ROOT_URLCONF = "workshop_site.urls"
WSGI_APPLICATION = "workshop_site.wsgi.application"
ASGI_APPLICATION = "workshop_site.asgi.application"
INSTALLED_APPS = [
    "django.contrib.admin", "django.contrib.auth", "django.contrib.contenttypes",
    "django.contrib.sessions", "django.contrib.messages", "django.contrib.staticfiles",
    "workshops.apps.WorkshopsConfig",
]
MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "whitenoise.middleware.WhiteNoiseMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "django.contrib.auth.middleware.AuthenticationMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django.middleware.clickjacking.XFrameOptionsMiddleware",
    "workshops.middleware.LabHeaderMiddleware",
]
TEMPLATES = [{"BACKEND": "django.template.backends.django.DjangoTemplates",
    "DIRS": [BASE_DIR / "templates"], "APP_DIRS": True,
    "OPTIONS": {"context_processors": [
        "django.template.context_processors.request",
        "django.contrib.auth.context_processors.auth",
        "django.contrib.messages.context_processors.messages",
    ]}}]
DATABASES = {"default": {"ENGINE": "django.db.backends.sqlite3",
    "NAME": os.environ.get("LAB_DB", str(BASE_DIR / "db.sqlite3"))}}
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"
TIME_ZONE = "Asia/Kolkata"
USE_I18N = True
USE_TZ = True
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
LOGIN_URL = "login"
LOGIN_REDIRECT_URL = "workshops:list"
LOGOUT_REDIRECT_URL = "workshops:list"
STATIC_URL = "/static/"
STATICFILES_DIRS = [BASE_DIR / "static"]
STATIC_ROOT = Path(os.environ.get("LAB_STATIC_ROOT", str(BASE_DIR / "collected-static")))
STORAGES = {
    "default": {"BACKEND": "django.core.files.storage.FileSystemStorage"},
    "staticfiles": {"BACKEND": "django.contrib.staticfiles.storage.StaticFilesStorage"},
}
MEDIA_ROOT = Path(os.environ.get("LAB_MEDIA_ROOT", str(BASE_DIR / "private-uploads")))
MEDIA_URL = "/private-uploads/"
EMAIL_BACKEND = "django.core.mail.backends.locmem.EmailBackend"
CACHES = {"default": {"BACKEND": "django.core.cache.backends.locmem.LocMemCache",
    "LOCATION": "workshop-lab"}}
SESSION_COOKIE_HTTPONLY = True
SESSION_COOKIE_SAMESITE = "Lax"