"""Application configuration from environment variables."""

from pydantic_settings import BaseSettings
from functools import lru_cache


class Settings(BaseSettings):
    """Application settings loaded from environment."""

    # App
    app_name: str = "Task Manager API"
    debug: bool = False

    # Database
    database_url: str = "sqlite:///./tasks.db"

    # JWT
    secret_key: str = "your-super-secret-key-change-in-production"
    algorithm: str = "HS256"
    access_token_expire_minutes: int = 30

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"


@lru_cache
def get_settings() -> Settings:
    """Get cached settings instance."""
    return Settings()