Updated the export_chat_history function

app.py

@@ -1,5 +1,6 @@
 import gradio as gr
 import tempfile
+import datetime
 import os
 from enhanced_semantic_search import search_cases, chat_with_cases, extract_text_from_pdf, init_database
 
@@ -83,13 +84,19 @@ def export_chat_history(history):
     
     # Create a formatted document
     content = "# Legal Assistant Chat Export\n\n"
-    content += f"Export Date: {gr.utils.get_timestamp()}\n\n"
+    content += f"Export Date: {datetime.datetime.now().isoformat()}\n\n"
     
     for i, (user_msg, bot_response) in enumerate(history, 1):
-        content += f"## Query {i}\n**User:** {user_msg}\n\n**Assistant:** {bot_response}\n\n---\n\n"
+        content += (
+            f"## Query {i}\n"
+            f"**User:** {user_msg}\n\n"
+            f"**Assistant:** {bot_response}\n\n---\n\n"
+        )
     
     # Save to temporary file
-    temp_file = tempfile.NamedTemporaryFile(mode='w', suffix='.md', delete=False, encoding='utf-8')
+    temp_file = tempfile.NamedTemporaryFile(
+        mode='w', suffix='.md', delete=False, encoding='utf-8'
+    )
     temp_file.write(content)
     temp_file.close()