Update app.py

app.py

@@ -94,7 +94,10 @@ def handle_userinput(user_question):
 
 
 def main():
-    st.set_page_config(page_title="Chat with multiple Files", page_icon=":books:")
+    load_dotenv()
+    st.set_page_config(page_title="Chat with multiple Files",
+                       page_icon=":books:")
+    st.write(css, unsafe_allow_html=True)
 
     if "conversation" not in st.session_state:
         st.session_state.conversation = None
@@ -103,16 +106,20 @@ def main():
 
     st.header("Chat with multiple Files :")
     user_question = st.text_input("Ask a question about your documents:")
+    if user_question:
+        handle_userinput(user_question)
 
     with st.sidebar:
+        openai_key = st.text_input("Paste your OpenAI API key (sk-...)")
+        if openai_key:
+            os.environ["OPENAI_API_KEY"] = openai_key
+
         st.subheader("Your documents")
         docs = st.file_uploader(
-            "Upload your files here and click on 'Process'",
-            accept_multiple_files=True
-        )
-
+            "Upload your PDFs here and click on 'Process'", accept_multiple_files=True)
         if st.button("Process"):
             with st.spinner("Processing"):
+                # get pdf text
                 doc_list = []
 
                 for file in docs: