Update app.py

app.py

@@ -22,7 +22,6 @@ def process_files(files):
     global index, chunks
     chunks = []
     try:
-        # Gradio returns a list if multiple files are uploaded
         if not isinstance(files, list):
             files = [files]
 
@@ -64,7 +63,10 @@ def rag_pipeline(query, model_choice):
     try:
         response = client.chat.completions.create(
             model=model_choice,
-            messages=[{"role": "user", "content": prompt}]
+            messages=[
+                {"role": "system", "content": "You are a helpful assistant."},
+                {"role": "user", "content": prompt}
+            ]
         )
         answer = response.choices[0].message.content
         chat_history.append((query, answer))
@@ -76,7 +78,6 @@ with gr.Blocks() as demo:
     gr.Markdown("# 🌟 ContextPilot Bilal\n### Upload documents and ask optimized questions")
 
     with gr.Tab("Upload Files"):
-        # ✅ Correct: use type="filepath" for file paths
         file_input = gr.File(label="📂 Upload PDF or Text Files", file_types=[".pdf", ".txt"], type="filepath")
         process_btn = gr.Button("🚀 Process Files")
         status_output = gr.Textbox(label="Status", interactive=False)