Update backend/firebase_config.py

backend/firebase_config.py

@@ -27,4 +27,11 @@ def save_chat_message(user_input, krishna_response):
     ref.push({
         'user': user_input,
         'krishna': krishna_response
-    })
+    })
+
+def get_chat_history():
+    ref = db.reference('chat_history')
+    history = ref.get()
+    if history:
+        return [(msg['user'], msg['krishna']) for msg in history.values()]
+    return []