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

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


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


def env_list(key: str, default: str = "") -> list[str]:
    value = os.getenv(key, default)
    return [item.strip() for item in value.split(",") if item.strip()]


DJANGO_ENV = os.getenv("DJANGO_ENV", "development").strip().lower()
SECRET_KEY = os.getenv("DJANGO_SECRET_KEY", "insecure-development-secret")
DEBUG = env_bool("DJANGO_DEBUG", False)
ALLOWED_HOSTS = env_list("DJANGO_ALLOWED_HOSTS", "localhost,127.0.0.1")
CSRF_TRUSTED_ORIGINS = env_list(
    "DJANGO_CSRF_TRUSTED_ORIGINS", "http://localhost,http://127.0.0.1"
)

if not DEBUG and SECRET_KEY in {"", "insecure-development-secret", "change-me-in-production"}:
    raise ImproperlyConfigured("DJANGO_SECRET_KEY must be set to a strong value when DEBUG=0.")
if not DEBUG and not ALLOWED_HOSTS:
    raise ImproperlyConfigured("DJANGO_ALLOWED_HOSTS must not be empty when DEBUG=0.")

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "rest_framework",
    "apps.api",
    "apps.core",
    "apps.users",
    "apps.players",
    "apps.competitions",
    "apps.teams",
    "apps.stats",
    "apps.scouting",
    "apps.providers",
    "apps.ingestion",
]

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 = "config.urls"

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",
            ],
        },
    },
]

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

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

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 = os.getenv("DJANGO_TIME_ZONE", "UTC")
USE_I18N = True
USE_TZ = True

STATIC_URL = os.getenv("DJANGO_STATIC_URL", "/static/")
STATIC_ROOT = Path(os.getenv("DJANGO_STATIC_ROOT", str(BASE_DIR / "staticfiles")))
STATICFILES_DIRS = [BASE_DIR / "static"]

MEDIA_URL = os.getenv("DJANGO_MEDIA_URL", "/media/")
MEDIA_ROOT = Path(os.getenv("DJANGO_MEDIA_ROOT", str(BASE_DIR / "media")))

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

LOGIN_URL = "users:login"
LOGIN_REDIRECT_URL = "core:dashboard"
LOGOUT_REDIRECT_URL = "core:home"

CELERY_BROKER_URL = os.getenv("CELERY_BROKER_URL", "redis://redis:6379/0")
CELERY_RESULT_BACKEND = os.getenv("CELERY_RESULT_BACKEND", "redis://redis:6379/0")
CELERY_ACCEPT_CONTENT = ["json"]
CELERY_TASK_SERIALIZER = "json"
CELERY_RESULT_SERIALIZER = "json"
CELERY_TIMEZONE = TIME_ZONE
CELERY_TASK_TIME_LIMIT = int(os.getenv("CELERY_TASK_TIME_LIMIT", "1800"))
CELERY_TASK_SOFT_TIME_LIMIT = int(os.getenv("CELERY_TASK_SOFT_TIME_LIMIT", "1500"))
INGESTION_SCHEDULE_ENABLED = env_bool("INGESTION_SCHEDULE_ENABLED", False)
INGESTION_SCHEDULE_CRON = os.getenv("INGESTION_SCHEDULE_CRON", "*/30 * * * *").strip()
INGESTION_SCHEDULE_PROVIDER_NAMESPACE = os.getenv("INGESTION_SCHEDULE_PROVIDER_NAMESPACE", "").strip()
INGESTION_SCHEDULE_JOB_TYPE = os.getenv("INGESTION_SCHEDULE_JOB_TYPE", "incremental").strip().lower()
INGESTION_PREVENT_OVERLAP = env_bool("INGESTION_PREVENT_OVERLAP", True)
INGESTION_OVERLAP_WINDOW_MINUTES = int(os.getenv("INGESTION_OVERLAP_WINDOW_MINUTES", "180"))

if INGESTION_SCHEDULE_JOB_TYPE not in {"incremental", "full_sync"}:
    raise ImproperlyConfigured("INGESTION_SCHEDULE_JOB_TYPE must be either 'incremental' or 'full_sync'.")

PROVIDER_BACKEND = os.getenv("PROVIDER_BACKEND", "demo").strip().lower()
PROVIDER_NAMESPACE_DEMO = os.getenv("PROVIDER_NAMESPACE_DEMO", "mvp_demo")
PROVIDER_NAMESPACE_BALLDONTLIE = os.getenv("PROVIDER_NAMESPACE_BALLDONTLIE", "balldontlie")
PROVIDER_DEFAULT_NAMESPACE = os.getenv("PROVIDER_DEFAULT_NAMESPACE", "").strip()
PROVIDER_MVP_DATA_FILE = os.getenv(
    "PROVIDER_MVP_DATA_FILE",
    str(BASE_DIR / "apps" / "providers" / "data" / "mvp_provider.json"),
)
PROVIDER_REQUEST_RETRIES = int(os.getenv("PROVIDER_REQUEST_RETRIES", "3"))
PROVIDER_REQUEST_RETRY_SLEEP = float(os.getenv("PROVIDER_REQUEST_RETRY_SLEEP", "1"))
PROVIDER_HTTP_TIMEOUT_SECONDS = float(os.getenv("PROVIDER_HTTP_TIMEOUT_SECONDS", "10"))
PROVIDER_BALLDONTLIE_BASE_URL = os.getenv("PROVIDER_BALLDONTLIE_BASE_URL", "https://api.balldontlie.io/v1")
PROVIDER_BALLDONTLIE_API_KEY = os.getenv("PROVIDER_BALLDONTLIE_API_KEY", "")
PROVIDER_BALLDONTLIE_PLAYERS_PAGE_LIMIT = int(os.getenv("PROVIDER_BALLDONTLIE_PLAYERS_PAGE_LIMIT", "5"))
PROVIDER_BALLDONTLIE_PLAYERS_PER_PAGE = int(os.getenv("PROVIDER_BALLDONTLIE_PLAYERS_PER_PAGE", "100"))
PROVIDER_BALLDONTLIE_STATS_PAGE_LIMIT = int(os.getenv("PROVIDER_BALLDONTLIE_STATS_PAGE_LIMIT", "10"))
PROVIDER_BALLDONTLIE_STATS_PER_PAGE = int(os.getenv("PROVIDER_BALLDONTLIE_STATS_PER_PAGE", "100"))
PROVIDER_BALLDONTLIE_SEASONS = [
    int(value.strip())
    for value in os.getenv("PROVIDER_BALLDONTLIE_SEASONS", "2024").split(",")
    if value.strip().isdigit()
]

LOG_LEVEL = os.getenv("DJANGO_LOG_LEVEL", "INFO").upper()
LOG_SQL = env_bool("DJANGO_LOG_SQL", False)
LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "standard": {
            "format": "%(asctime)s %(levelname)s %(name)s %(message)s",
        }
    },
    "handlers": {
        "console": {
            "class": "logging.StreamHandler",
            "formatter": "standard",
        }
    },
    "root": {
        "handlers": ["console"],
        "level": LOG_LEVEL,
    },
    "loggers": {
        "django.db.backends": {
            "handlers": ["console"],
            "level": "DEBUG" if LOG_SQL else "WARNING",
            "propagate": False,
        },
    },
}

REST_FRAMEWORK = {
    "DEFAULT_PERMISSION_CLASSES": [
        "apps.api.permissions.ReadOnlyOrDeny",
    ],
    "DEFAULT_THROTTLE_CLASSES": [
        "rest_framework.throttling.AnonRateThrottle",
        "rest_framework.throttling.UserRateThrottle",
    ],
    "DEFAULT_THROTTLE_RATES": {
        "anon": os.getenv("API_THROTTLE_ANON", "100/hour"),
        "user": os.getenv("API_THROTTLE_USER", "1000/hour"),
    },
}