Update app.py

app.py

@@ -132,8 +132,6 @@ def build_index(files, progress=gr.Progress()):
 # ---- RAG query -> retrieve -> generate ----
 def answer_question(question, top_k=5, max_new_tokens=256, progress=gr.Progress()):
 
-    progress(0.1, desc="Embedding question…")
-    
     if index is None or not corpus_chunks:
         return "Index not built yet. Upload PDFs and click **Build Index** first."
 
@@ -151,8 +149,6 @@ def answer_question(question, top_k=5, max_new_tokens=256, progress=gr.Progress(
         f"Context:\n{context}\n\nQuestion: {question}\nAnswer:"
     )
 
-    progress(0.6, desc="Generating answer…")
-    
     out = generator(prompt, max_new_tokens=int(max_new_tokens), temperature=0.2)
     return out[0]["generated_text"].strip()
 
@@ -207,7 +203,9 @@ with gr.Blocks(title="Group 5 Study Helper (RAG)") as demo:
         return msg, n or 0
 
     build_btn.click(_build, inputs=[file_in], outputs=[status, chunk_count])
-    ask_btn.click(answer_question, inputs=[question, topk, max_tokens], outputs=[answer])
+    evt = ask_btn.click(lambda: "⏳ Processing…", inputs=None, outputs=answer)
+    evt.then(answer_question, inputs=[question, topk, max_tokens], outputs=answer)
+
     reset_btn.click(
         reset_app,
         inputs=None,