Switch primary model in write_message method to ChatGroq with fallback to ChatGoogleGenerativeAI

app.py

@@ -143,11 +143,12 @@ def write_message(data: dict, header: str = Header()):
     message = data['message']
 
     try:
-        model = ChatGoogleGenerativeAI(model=GOOGLE_MODEL, callbacks = [OpikTracer()])
+        model = ChatGroq(model=GROQ_MODEL, temperature=1, callbacks = [OpikTracer()])
         transaction_bot = Agent(model, system=prompt)
         transaction_bot.graph.invoke({"messages": [message]})
     except Exception as e: #fallback model
-        model = ChatGroq(model=GROQ_MODEL, temperature=1, callbacks = [OpikTracer()])
+        
+        model = ChatGoogleGenerativeAI(model=GOOGLE_MODEL, callbacks = [OpikTracer()])
         transaction_bot = Agent(model, system=prompt)
         transaction_bot.graph.invoke({"messages": [message]})