Update app.py

app.py

@@ -288,6 +288,11 @@ def answer_question(question):
         logging.error(f"Error answering question: {str(e)}")
         return f"Error generating answer: {str(e)}"
 
+def is_valid_url(url):
+    """Validate URL format."""
+    pattern = r'^https?://[\w\-\.]+(?:\:\d+)?(?:/[\w\-\./]*)*$'
+    return bool(re.match(pattern, url))
+
 # Sidebar for navigation
 st.sidebar.title("Navigation")
 app_mode = st.sidebar.radio("Choose a mode", ["Web Scraping", "Chat with Content", "About"])
@@ -296,7 +301,7 @@ if app_mode == "Web Scraping":
     st.header("🌐 Web Scraping")
     url = st.text_input("Enter URL to scrape", "https://example.com")
     if st.button("Scrape Website"):
-        if url:
+        if url and is_valid_url(url):
             with st.spinner("Scraping website..."):
                 result = scrape_website(url)
                 if result:
@@ -314,7 +319,7 @@ if app_mode == "Web Scraping":
                 else:
                     st.error("Failed to scrape the website. Check logs for details.")
         else:
-            st.warning("Please enter a valid URL.")
+            st.warning("Please enter a valid URL (e.g., https://example.com).")
 
 elif app_mode == "Chat with Content":
     st.header("💬 Chat with Scraped Content")
@@ -399,4 +404,4 @@ if st.sidebar.checkbox("Show Debug Logs"):
     except PermissionError:
         st.sidebar.error("Cannot read log file due to permission issues.")
     except FileNotFoundError:
-        st.sidebar.warning("Log file not found.") 
+        st.sidebar.warning("Log file not found.")