from functools import lru_cache

from pydantic_settings import BaseSettings, SettingsConfigDict

class Settings(BaseSettings):

    model_config = SettingsConfigDict(env_prefix="SIGHTLINE_", env_file=".env", extra="ignore")

    app_name: str = "Sightline ALPR Intelligence"

    environment: str = "dev"

    secret_key: str = "dev-insecure-change-me"

    access_token_expire_minutes: int = 60 * 12

    jwt_algorithm: str = "HS256"

    database_url: str = "postgresql+psycopg2://sightline:sightline@localhost:5432/sightline"

    redis_url: str = "redis://localhost:6379/0"

    storage_dir: str = "./_storage"

    storage_backend: str = "local"

    s3_bucket: str = "sightline"

    s3_endpoint_url: str | None = None

    s3_region: str | None = None

    cors_origins: list[str] = ["http://localhost:3000"]

    oidc_enabled: bool = False

    oidc_issuer: str | None = None

    oidc_client_id: str | None = None

    oidc_client_secret: str | None = None

    oidc_redirect_uri: str = "http://localhost:8000/api/v1/auth/oidc/callback"

    oidc_default_role: str = "analyst"

    max_upload_bytes: int = 50 * 1024 * 1024

    dedup_window_seconds: int = 1

    impossible_speed_kmh: float = 250.0

    cotravel_window_seconds: int = 120

    dwell_gap_seconds: int = 1800

    default_retention_days: int = 365

    rate_limit_per_minute: int = 600

    open_mode: bool = True

@lru_cache

def get_settings() -> Settings:

    return Settings()

settings = get_settings()