"""Development settings for the teacher consultation website."""
import os
from pathlib import Path

from dotenv import load_dotenv


BASE_DIR = Path(__file__).resolve().parent.parent

# Загружаем переменные из .env (если есть) — секреты не храним в коде.
load_dotenv(BASE_DIR / ".env")

# --- Секреты только из окружения: без env приложение не стартует ---
SECRET_KEY = os.environ.get("DJANGO_SECRET_KEY")
if not SECRET_KEY:
    raise RuntimeError(
        "DJANGO_SECRET_KEY не задан. Установите переменную окружения "
        "(например: python -c \"from django.core.management.utils "
        "import get_random_secret_key; print(get_random_secret_key())\")."
    )

DEBUG = os.environ.get("DJANGO_DEBUG") == "1"

ALLOWED_HOSTS = [
    host.strip()
    for host in os.environ.get("DJANGO_ALLOWED_HOSTS", "127.0.0.1,localhost").split(",")
    if host.strip()
]

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "axes",
    "consultations",
]

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",
    "axes.middleware.AxesMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django.middleware.clickjacking.XFrameOptionsMiddleware",
]

# --- django-axes: защита от брутфорса логина ---
AXES_FAILURE_LIMIT = 5
AXES_COOLOFF_TIME = 1  # часы
AXES_RESET_ON_SUCCESS = True

ROOT_URLCONF = "config.urls"

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

WSGI_APPLICATION = "config.wsgi.application"
ASGI_APPLICATION = "config.asgi.application"

# django-axes: бэкенд аутентификации для защиты от брутфорса
AUTHENTICATION_BACKENDS = [
    "axes.backends.AxesStandaloneBackend",
    "django.contrib.auth.backends.ModelBackend",
]

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": BASE_DIR / "db.sqlite3",
    }
}

AUTH_PASSWORD_VALIDATORS = [
    {
        "NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
        "OPTIONS": {"min_length": 8},
    },
    {
        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
    },
]

LANGUAGE_CODE = "ru-ru"
TIME_ZONE = "Europe/Astrakhan"
USE_I18N = True
USE_TZ = True

STATIC_URL = "static/"

STORAGES = {
    "default": {"BACKEND": "django.core.files.storage.FileSystemStorage"},
    "staticfiles": {
        "BACKEND": "whitenoise.storage.CompressedManifestStaticFilesStorage",
    },
}
STATICFILES_DIRS = [BASE_DIR / "static"]
STATIC_ROOT = BASE_DIR / "staticfiles"

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"