chore: switch to local json storage

main.py

@@ -1,7 +1,8 @@
 import streamlit as st
 import requests
 import datetime
-from pymongo import MongoClient
+import json
+import os
 from streamlit_cookies_manager import CookieManager
 
 # Inject the scroll control HTML/JS
@@ -14,35 +15,47 @@ cookies = CookieManager(prefix="ktosiek/streamlit-cookies-manager/")
 if not cookies.ready():
     st.stop()
 
-# Connect to MongoDB
-client = MongoClient("mongodb://localhost:27017/")  # Adjust your MongoDB connection URI
-db = client["chatbot_db"]  # Database name
-users_collection = db["users"]  # Collection to store user data
+# Define the file path for storing user data
+user_data_file = "user_data.json"
+
+# Helper function to load user data from JSON file
+def load_user_data():
+    if os.path.exists(user_data_file):
+        with open(user_data_file, 'r') as file:
+            return json.load(file)
+    else:
+        save_user_data({})
+        return {}
+
+# Helper function to save user data to JSON file
+def save_user_data(data):
+    with open(user_data_file, 'w') as file:
+        json.dump(data, file, indent=4)
+
+# Load existing user data
+user_data = load_user_data()
 
 # Generate a user ID and store it in cookies if not already set
-if 'user_id' not in cookies:
+if cookies.get('user_id') is None:  # Correct check for user_id in cookies
     cookies['user_id'] = str(datetime.datetime.now().timestamp())  # Use timestamp as a unique ID
     cookies.save()
 
 user_id = cookies.get('user_id')
 # st.write(f"Current User ID: {user_id}")
 
-# Check if the user exists in the database
-user_data = users_collection.find_one({"user_id": user_id})
-
-# If user doesn't exist, create a new entry with the current timestamp and empty chat history
-if not user_data:
+# Check if the user exists in the JSON file
+if user_id not in user_data:
     timestamp = str(datetime.datetime.now().isoformat())  # Unique timestamp for each user
-    users_collection.insert_one({
-        "user_id": user_id,
+    user_data[user_id] = {
         "timestamp": timestamp,
         "messages": []  # Empty chat history
-    })
-    st.write("New user detected! Created user entry in the database.")
+    }
+    save_user_data(user_data)
+    st.write("New user detected! Created user entry in the JSON file.")
 else:
-    # If user exists, load the chat history from the database
-    st.session_state.messages = user_data["messages"]
-    # st.write("Returning user detected! Loaded chat history from the database.")
+    # If user exists, load the chat history from the JSON file
+    st.session_state.messages = user_data[user_id]["messages"]
+    # st.write("Returning user detected! Loaded chat history from the JSON file.")
 
 # Function to send POST request to a local server
 def send_post_request(prompt):
@@ -121,16 +134,10 @@ if prompt:
     st.chat_message('bot').markdown(response)
     st.session_state.messages.append({'role': 'bot', 'content': response})
 
-    # Update the user's chat history in the database
-    users_collection.update_one(
-        {"user_id": user_id},
-        {"$push": {"messages": {'role': 'user', 'content': prompt}}},
-    )
-    users_collection.update_one(
-        {"user_id": user_id},
-        {"$push": {"messages": {'role': 'bot', 'content': response}}},
-    )
+    # Update the user's chat history in the JSON file
+    user_data[user_id]["messages"] = st.session_state.messages
+    save_user_data(user_data)
 
-    # Save updated history to cookies (optional, MongoDB handles persistence)
+    # Save updated history to cookies (optional)
     cookies['history'] = st.session_state.messages
     cookies.save()