Update app.py for end to end handling of all FAQS calls serving

app.py

@@ -1,4 +1,4 @@
-from flask import Flask, request, jsonify 
+from flask import Flask, request, jsonify
 import json
 
 app = Flask(__name__)
@@ -7,32 +7,28 @@
 with open('menu_structure.json', 'r', encoding="utf-8") as file:
     menu_structure = json.load(file)
 
-MENU_STATE = 'menu'
-# Initialize current state
-current_state = "menu"
-
 @app.route('/')
 def home():
     return "Welcome to the Chatbot API! Use the /chatbot endpoint to interact with the bot."
 
 @app.route('/chatbot', methods=['POST'])
 def chatbot():
-    global current_state
     user_choice = request.json.get('choice', '').strip()
-
+
+    # Determine the current state based on the user choice
     if user_choice.lower() == 'back to main menu':
-        # Reset to main menu
-        current_state = MENU_STATE
-    elif user_choice.lower() == MENU_STATE:
-        pass
-    elif user_choice in menu_structure.get(current_state, []):
+        current_state = 'menu'
+    elif user_choice.lower() == 'menu':
+        current_state = 'menu'
+    elif user_choice in menu_structure:
         current_state = user_choice
     else:
-        return jsonify({"error": "Invalid choice. Please type menu to get the faq."})
+        return jsonify({"error": "Invalid choice. Please type menu to get the faq."}), 400
 
     # Get the current state data
-    state_data = menu_structure[current_state]
-
+    state_data = menu_structure.get(current_state, [])
+
+    # Prepare the response based on the type of state data
     if isinstance(state_data, list):
         response = {
             "question": f"Please choose an option from {current_state}",