Update app.py

app.py

@@ -70,11 +70,17 @@ def extract_text(file_path):
         doc = Document(file_path)
         for para in doc.paragraphs:
             text += para.text + "\n"
-    return text
+    return text.strip()
 
 def create_vectorstore(text):
+    if not text:
+        return None
     splitter = CharacterTextSplitter(chunk_size=500, chunk_overlap=50)
     docs = splitter.create_documents([text])
+    # Filter out empty docs if any
+    docs = [doc for doc in docs if doc.page_content.strip()]
+    if not docs:
+        return None
     embeddings = HuggingFaceEmbeddings()
     vectorstore = FAISS.from_documents(docs, embeddings)
     return vectorstore
@@ -107,17 +113,23 @@ def get_answer(query, vectorstore, mode):
 
 if uploaded_file:
     raw_text = extract_text(uploaded_file)
-    st.success("📄 Syllabus loaded successfully!")
-    query = st.text_input("❓ Ask your question (Urdu or English)")
-    if query:
-        with st.spinner("Thinking..."):
-            vs = create_vectorstore(raw_text)
-            answer = get_answer(query, vs, mode)
-            st.markdown("### ✅ Answer:")
-            st.write(answer)
-            if voice_enabled:
-                audio_file = generate_voice(answer)
-                with open(audio_file, "rb") as f:
-                    st.audio(f.read(), format="audio/mp3")
+    if not raw_text:
+        st.error("❌ No text could be extracted from the syllabus file. Please check the file.")
+    else:
+        st.success("📄 Syllabus loaded successfully!")
+        query = st.text_input("❓ Ask your question (Urdu or English)")
+        if query:
+            with st.spinner("Thinking..."):
+                vs = create_vectorstore(raw_text)
+                if vs is None:
+                    st.error("❌ Failed to create vector store. The syllabus content may be too short or invalid.")
+                else:
+                    answer = get_answer(query, vs, mode)
+                    st.markdown("### ✅ Answer:")
+                    st.write(answer)
+                    if voice_enabled:
+                        audio_file = generate_voice(answer)
+                        with open(audio_file, "rb") as f:
+                            st.audio(f.read(), format="audio/mp3")
 else:
     st.info("Please paste a valid Google Drive link to load your syllabus file.")