app/config.py

import os
from dotenv import load_dotenv

# Load environment variables from .env file (if it exists)
load_dotenv()

# Get the Gemini API key from environment variables
GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")

# Settings object for easy access
class Settings:
    GEMINI_API_KEY: str = GEMINI_API_KEY
    LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
    MAX_FILE_SIZE: int = int(os.getenv("MAX_FILE_SIZE", "10485760"))  # 10MB default
    
    def validate(self):
        """Validate required settings"""
        if not self.GEMINI_API_KEY:
            raise ValueError(
                "GEMINI_API_KEY not found in environment variables. "
                "Please set it in your environment or .env file."
            )

settings = Settings()

# Validate settings on import (only if GEMINI_API_KEY is set)
if GEMINI_API_KEY:
    settings.validate()