Update app.py

app.py

@@ -11,14 +11,25 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 # --- Basic Agent Definition ---
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
 class BasicAgent:
+    """A langgraph agent."""
+    global llm
     def __init__(self):
         print("BasicAgent initialized.")
+        
+        llm = ga.connect_models()
+        self.agent = ga.create_agent_workflow()
+        
+
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
-        fixed_answer = "This is a default answer."
+        result = self.agent.invoke({
+                "question": question
+            })
+        fixed_answer = result.get("final_answer", "No answer generated")
         print(f"Agent returning fixed answer: {fixed_answer}")
         return fixed_answer
 
+
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """
     Fetches all questions, runs the BasicAgent on them, submits all answers,