import os
from pathlib import Path

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


def env_bool(name: str, default: bool = False) -> bool:
    value = os.environ.get(name)
    if value is None:
        return default
    return value.lower() in {"1", "true", "yes", "on"}


def env_list(name: str, default: list[str]) -> list[str]:
    value = os.environ.get(name)
    if value is None:
        return default
    return [item.strip() for item in value.split(",") if item.strip()]


SECRET_KEY = os.environ.get("HUB_SECRET_KEY", "local-development-only")
DEBUG = env_bool("HUB_DEBUG")
ALLOWED_HOSTS = env_list("HUB_ALLOWED_HOSTS", ["localhost", "127.0.0.1"])
CSRF_TRUSTED_ORIGINS = env_list("HUB_CSRF_TRUSTED_ORIGINS", [])

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "rest_framework",
    "hub_platform.health",
    "hub_platform.events",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "hub_platform.http.middleware.LocalCorsMiddleware",
    "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",
    "hub_platform.events.middleware.CorrelationIdMiddleware",
]

ROOT_URLCONF = "hub_backend.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 = "hub_backend.wsgi.application"
ASGI_APPLICATION = "hub_backend.asgi.application"

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        "NAME": os.environ.get("POSTGRES_DB", "edevs_hub"),
        "USER": os.environ.get("POSTGRES_USER", "edevs_hub"),
        "PASSWORD": os.environ.get("POSTGRES_PASSWORD", "edevs_hub"),
        "HOST": os.environ.get("POSTGRES_HOST", "postgres"),
        "PORT": os.environ.get("POSTGRES_PORT", "5432"),
        "CONN_MAX_AGE": 60,
    }
}

CACHES = {
    "default": {
        "BACKEND": "django.core.cache.backends.redis.RedisCache",
        "LOCATION": os.environ.get("REDIS_URL", "redis://redis:6379/0"),
    }
}

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 = "ru-ru"
TIME_ZONE = "Europe/Moscow"
USE_I18N = True
USE_TZ = True

STATIC_URL = "static/"
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

REST_FRAMEWORK = {
    "DEFAULT_RENDERER_CLASSES": ["rest_framework.renderers.JSONRenderer"],
    "DEFAULT_PARSER_CLASSES": ["rest_framework.parsers.JSONParser"],
}

CORS_ALLOWED_ORIGINS = {
    "http://localhost:5173",
    "http://localhost:5174",
    "http://localhost:5175",
}

LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "structured": {
            "format": "%(asctime)s %(levelname)s %(name)s %(message)s correlation_id=%(correlation_id)s"
        }
    },
    "filters": {
        "correlation_id": {"()": "hub_platform.events.logging.CorrelationIdLogFilter"}
    },
    "handlers": {
        "console": {
            "class": "logging.StreamHandler",
            "formatter": "structured",
            "filters": ["correlation_id"],
        }
    },
    "root": {"handlers": ["console"], "level": "INFO"},
}