from pymongo import MongoClient import os MONGO_URI = "mongodb+srv://be1newinner:0r9v0ercEMINIJfK@cluster0.y2mqe.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0" client = MongoClient(MONGO_URI) db = client["chatbot_db"] users_collection = db["users"] sessions_collection = db["sessions"] chat_history_collection = db["chat_history"] activity_log_collection = db["activity_log"]