"""Application configuration."""
import os
from functools import lru_cache
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    """Application settings."""
    # MongoDB settings
    MONGO_URI: str = os.getenv("MONGO_URI", "mongodb://localhost:27017")
    DB_NAME: str = os.getenv("DB_NAME", "tts_api")
    
    # Storage paths
    STORAGE_PATH: str = os.getenv("STORAGE_PATH", "/app/storage")
    AUDIO_DIR: str = os.path.join(STORAGE_PATH, "audio")
    TEXT_DIR: str = os.path.join(STORAGE_PATH, "text")
    TEMP_DIR: str = os.path.join(STORAGE_PATH, "temp")
    
    # Ensure directories exist
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        os.makedirs(self.AUDIO_DIR, exist_ok=True)
        os.makedirs(self.TEXT_DIR, exist_ok=True)
        os.makedirs(self.TEMP_DIR, exist_ok=True)
    
    class Config:
        """Pydantic config."""
        env_file = ".env"

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

# Create settings instance
settings = get_settings()

# Export directory paths
AUDIO_DIR = settings.AUDIO_DIR
TEXT_DIR = settings.TEXT_DIR
TEMP_DIR = settings.TEMP_DIR