Update app.py

app.py

@@ -1,7 +1,15 @@
 # app.py
 
-# Import necessary libraries
 import streamlit as st
+
+# Set page config
+st.set_page_config(
+    page_title="TransactPro: The Ultimate Financial Platform",
+    page_icon="💳",
+    layout="wide",
+)
+
+# Import necessary libraries
 import requests
 import base64
 import uuid
@@ -27,23 +35,21 @@ from oauthlib.oauth1 import Client  # For MasterCard OAuth1
 import json
 
 # Optional imports for barcode scanning
+barcode_scanning_available = True
 try:
     import cv2
     from pyzbar import pyzbar
     from streamlit_webrtc import webrtc_streamer, VideoTransformerBase
 except ImportError:
-    st.warning("OpenCV and pyzbar are not available. Barcode scanning will be disabled.")
     cv2 = None
     pyzbar = None
     webrtc_streamer = None
     VideoTransformerBase = object
+    barcode_scanning_available = False
 
-# Set page config
-st.set_page_config(
-    page_title="TransactPro: The Ultimate Financial Platform",
-    page_icon="💳",
-    layout="wide",
-)
+# Now, after st.set_page_config(), you can use Streamlit commands
+if not barcode_scanning_available:
+    st.warning("OpenCV and pyzbar are not available. Barcode scanning will be disabled.")
 
 # Load environment variables securely
 def load_env_vars():
@@ -100,7 +106,7 @@ else:
     huggingface_token = HfFolder.get_token()
 
 # Initialize Plaid client if credentials are provided
-if plaid_client_id and plaid_secret:
+if get_env_var('PLAID_CLIENT_ID') and get_env_var('PLAID_SECRET'):
     from plaid.api import plaid_api
     from plaid.model import *
     from plaid.api_client import ApiClient
@@ -173,7 +179,7 @@ else:
     if service_choice == "In-Store Scanner & Payment":
         st.header("In-Store Item Scanner and Payment")
 
-        if cv2 and pyzbar and webrtc_streamer and VideoTransformerBase:
+        if barcode_scanning_available:
             # Mock database of items
             ITEM_DATABASE = {
                 "123456789012": {"name": "Product A", "price": 9.99},
@@ -399,8 +405,8 @@ else:
     # Plaid Services
     elif service_choice == "Plaid Services":
         st.header("Plaid Services")
-        if not plaid_client:
-            st.error("Plaid API credentials are not configured.")
+        if not plaid_client_id or not plaid_secret:
+            st.error("Please provide Plaid API credentials.")
         else:
             plaid_action = st.selectbox("Choose an Action", [
                 "Link Account",
@@ -784,6 +790,7 @@ else:
                         st.error(f"Error: {response.text}")
             elif visa_action == "Initiate Payment":
                 st.subheader("Initiate a Payment")
+                # Implement payment initiation with Visa API
                 st.info("Payment initiation with Visa API is not implemented in this example.")
 
     # MasterCard Services
@@ -824,6 +831,7 @@ else:
                         st.error(f"Error: {response.text}")
             elif mastercard_action == "Process Payment":
                 st.subheader("Process a Payment")
+                # Implement payment processing with MasterCard API
                 st.info("Payment processing with MasterCard API is not implemented in this example.")
 
     # Pipedream Integration
@@ -939,4 +947,4 @@ else:
 
     # Display footer
     st.sidebar.markdown("Powered by Streamlit")
-    st.sidebar.markdown("Made by Citibank Demo Business Inc.")
+    st.sidebar.markdown("Made by Citibank Demo Business Inc.")