from pathlib import Path
from typing import Optional

from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    # Base settings
    PROJECT_NAME: str = "QuickRestAPI"
    PROJECT_DESCRIPTION: str = "A simple REST API built with FastAPI and SQLite"
    PROJECT_VERSION: str = "0.1.0"

    # Server settings
    HOST: str = "0.0.0.0"
    PORT: int = 8000
    DEBUG: bool = True

    # Database settings
    DB_DIR: Path = Path("/app") / "storage" / "db"
    SQLALCHEMY_DATABASE_URL: Optional[str] = None

    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        # Ensure DB directory exists
        self.DB_DIR.mkdir(parents=True, exist_ok=True)

        # Set database URL if not provided
        if self.SQLALCHEMY_DATABASE_URL is None:
            self.SQLALCHEMY_DATABASE_URL = f"sqlite:///{self.DB_DIR}/db.sqlite"

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


settings = Settings()