import os
from pathlib import Path
from dotenv import load_dotenv
from django.core.management.utils import get_random_secret_key
import warnings

try:
    from cryptography.utils import CryptographyDeprecationWarning  # type: ignore
except Exception:  # pragma: no cover
    class CryptographyDeprecationWarning(Warning):
        pass

# Suppress noisy crypto algorithm deprecation warnings from asyncssh (ARC4, 3DES)
warnings.filterwarnings("ignore", category=CryptographyDeprecationWarning)

load_dotenv()

BASE_DIR = Path(__file__).resolve().parent.parent.parent
SECRET_KEY = os.getenv('DJANGO_SECRET_KEY', get_random_secret_key())
DEBUG = os.getenv('DJANGO_DEBUG', '0') == '1'
ALLOWED_HOSTS = [h.strip() for h in os.getenv('ALLOWED_HOSTS', '127.0.0.1,localhost').split(',') if h.strip()]

INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'channels', 'project.remotectl', ]

MIDDLEWARE = [ 'django.middleware.security.SecurityMiddleware', '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', ]




ROOT_URLCONF = 'project.config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'project' / 'remotectl' / 'templates'],
        '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 = 'project.config.wsgi.application'
ASGI_APPLICATION = 'project.config.asgi.application'

CHANNEL_LAYERS = {
    'default': {'BACKEND': 'channels.layers.InMemoryChannelLayer'}
}

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'},
    {'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_TZ = True

STATIC_URL = 'static/'
STATIC_ROOT = BASE_DIR / 'staticfiles'
STATICFILES_DIRS = [BASE_DIR / 'project' / 'remotectl' / 'static']

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
LOGIN_URL = '/accounts/login/'
LOGIN_REDIRECT_URL = '/'
LOGOUT_REDIRECT_URL = '/accounts/login/'

SSH_KEY_DIR = os.getenv('SSH_KEY_DIR') or str(Path.home() / '.ssh')
KNOWN_HOSTS_PATH = os.getenv('KNOWN_HOSTS_PATH') or str(Path.home() / '.ssh' / 'known_hosts')
STRICT_HOST_KEY_CHECKING = os.getenv('STRICT_HOST_KEY_CHECKING', 'true').lower() == 'true'