update

app.py

@@ -30,22 +30,23 @@ def main():
         user_input = st.text_area("Enter your text here:")
         uploaded_file = st.file_uploader("Upload a PDF", type="pdf")
         if st.button("Summarize"):
-            summary = ""
-            if uploaded_file is not None:
+            if uploaded_file and user_input:
+                st.warning("Please provide either text input or a PDF file, not both.")
+                return
+            elif uploaded_file:
                 # Extract text from PDF
                 file_content = load_pdf(uploaded_file)
                 st.write("PDF uploaded successfully.")
             elif user_input:
                 file_content = user_input
             else:
-                st.write("Please upload a PDF or enter some text to summarize.")
+                st.warning("Please upload a PDF or enter some text to summarize.")
                 return
 
             # Perform extractive summarization
             if radio_selection == "Extractive":
                 summary = summarize_with_textrank(file_content)
-
-            st.session_state.summary = summary
+                st.session_state.summary = summary
 
     # Right column: Displaying text after pressing 'Summarize'
     with col3: