utils/config_loader.py

import os
from dotenv import load_dotenv

load_dotenv()

class Config:
    OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
    GRAPH_RAG_API_URL = os.getenv("GRAPH_RAG_API_URL")
    EMBEDDING_MODEL = os.getenv("EMBEDDING_MODEL", "all-MiniLM-L6-v2")
    LLM_MODEL = os.getenv("LLM_MODEL", "gpt-3.5-turbo")