"""VoiceGuard Configuration Module."""

import os
from pydantic_settings import BaseSettings
from functools import lru_cache


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""
    
    # Server
    HOST: str = "0.0.0.0"
    PORT: int = 7860
    DEBUG: bool = True
    
    # API Key Authentication (required by hackathon)
    API_KEY: str = "sk_voiceguard_2026_secret"

    
    # Audio Processing
    TARGET_SAMPLE_RATE: int = 16000
    MIN_DURATION: float = 1.0  # seconds
    MAX_DURATION: float = 60.0  # seconds
    MAX_FILE_SIZE: int = 10 * 1024 * 1024  # 10 MB

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


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


settings = get_settings()