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auth.py

@@ -0,0 +1,34 @@
+# auth.py
+import hashlib
+from db import get_users_collection
+
+def hash_password(password):
+    return hashlib.sha256(password.encode()).hexdigest()
+
+def register_user(username, email, password):
+    users_collection = get_users_collection()
+    if users_collection.find_one({"email": email}):
+        return "User already exists"
+
+    hashed_password = hash_password(password)
+    user = {
+        "username": username,
+        "email": email,
+        "password": hashed_password
+    }
+    users_collection.insert_one(user)
+    return "User registered successfully"
+
+def login_user(email, password):
+    users_collection = get_users_collection()
+    user = users_collection.find_one({"email": email})
+
+    if not user:
+        return "Invalid credentials"
+
+    hashed_password = hash_password(password)
+    if user['password'] != hashed_password:
+        return "Invalid credentials"
+
+    return "Login successful"
+

db.py

@@ -0,0 +1,15 @@
+# db.py
+import pymongo
+from pymongo import MongoClient
+
+# Replace the following with your MongoDB Atlas connection string
+MONGODB_URI = "mongodb://atlas-sql-64cf1e5950ebbc37fa7eee8e-icpps.a.query.mongodb.net/ShopLocal-Assistant?ssl=true&authSource=admin"
+
+def get_database():
+    client = MongoClient(MONGODB_URI)
+    return client['mongodb://atlas-sql-64cf1e5950ebbc37fa7eee8e-icpps.a.query.mongodb.net/ShopLocal-Assistant?ssl=true&authSource=admin']
+
+def get_users_collection():
+    db = get_database()
+    return db['users']
+

streamlit_app.py

@@ -4,6 +4,7 @@
 import os
 import ollama
 from PIL import Image
+from auth import register_user, login_user
 from ollama_api import query_ollama  # Import the function
 
 # Your existing Streamlit code...